root / lib / jqueue.py @ cd46491f
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2 | 498ae1cc | Iustin Pop | #
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3 | 498ae1cc | Iustin Pop | |
4 | b95479a5 | Michael Hanselmann | # Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Google Inc.
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5 | 498ae1cc | Iustin Pop | #
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6 | 498ae1cc | Iustin Pop | # This program is free software; you can redistribute it and/or modify
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7 | 498ae1cc | Iustin Pop | # it under the terms of the GNU General Public License as published by
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8 | 498ae1cc | Iustin Pop | # the Free Software Foundation; either version 2 of the License, or
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9 | 498ae1cc | Iustin Pop | # (at your option) any later version.
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10 | 498ae1cc | Iustin Pop | #
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11 | 498ae1cc | Iustin Pop | # This program is distributed in the hope that it will be useful, but
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12 | 498ae1cc | Iustin Pop | # WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | 498ae1cc | Iustin Pop | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | 498ae1cc | Iustin Pop | # General Public License for more details.
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15 | 498ae1cc | Iustin Pop | #
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16 | 498ae1cc | Iustin Pop | # You should have received a copy of the GNU General Public License
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17 | 498ae1cc | Iustin Pop | # along with this program; if not, write to the Free Software
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18 | 498ae1cc | Iustin Pop | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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19 | 498ae1cc | Iustin Pop | # 02110-1301, USA.
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20 | 498ae1cc | Iustin Pop | |
21 | 498ae1cc | Iustin Pop | |
22 | 6c5a7090 | Michael Hanselmann | """Module implementing the job queue handling.
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23 | 6c5a7090 | Michael Hanselmann |
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24 | ea03467c | Iustin Pop | Locking: there's a single, large lock in the L{JobQueue} class. It's
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25 | ea03467c | Iustin Pop | used by all other classes in this module.
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26 | ea03467c | Iustin Pop |
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27 | ea03467c | Iustin Pop | @var JOBQUEUE_THREADS: the number of worker threads we start for
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28 | ea03467c | Iustin Pop | processing jobs
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29 | 6c5a7090 | Michael Hanselmann |
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30 | 6c5a7090 | Michael Hanselmann | """
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31 | 498ae1cc | Iustin Pop | |
32 | e2715f69 | Michael Hanselmann | import logging |
33 | f1da30e6 | Michael Hanselmann | import errno |
34 | f1048938 | Iustin Pop | import time |
35 | 5685c1a5 | Michael Hanselmann | import weakref |
36 | b95479a5 | Michael Hanselmann | import threading |
37 | dfc8824a | Michael Hanselmann | import itertools |
38 | 498ae1cc | Iustin Pop | |
39 | 6c2549d6 | Guido Trotter | try:
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40 | b459a848 | Andrea Spadaccini | # pylint: disable=E0611
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41 | 6c2549d6 | Guido Trotter | from pyinotify import pyinotify |
42 | 6c2549d6 | Guido Trotter | except ImportError: |
43 | 6c2549d6 | Guido Trotter | import pyinotify |
44 | 6c2549d6 | Guido Trotter | |
45 | 6c2549d6 | Guido Trotter | from ganeti import asyncnotifier |
46 | e2715f69 | Michael Hanselmann | from ganeti import constants |
47 | f1da30e6 | Michael Hanselmann | from ganeti import serializer |
48 | e2715f69 | Michael Hanselmann | from ganeti import workerpool |
49 | 99bd4f0a | Guido Trotter | from ganeti import locking |
50 | f1da30e6 | Michael Hanselmann | from ganeti import opcodes |
51 | 7a1ecaed | Iustin Pop | from ganeti import errors |
52 | e2715f69 | Michael Hanselmann | from ganeti import mcpu |
53 | 7996a135 | Iustin Pop | from ganeti import utils |
54 | 04ab05ce | Michael Hanselmann | from ganeti import jstore |
55 | c3f0a12f | Iustin Pop | from ganeti import rpc |
56 | 82b22e19 | René Nussbaumer | from ganeti import runtime |
57 | a744b676 | Manuel Franceschini | from ganeti import netutils |
58 | 989a8bee | Michael Hanselmann | from ganeti import compat |
59 | b95479a5 | Michael Hanselmann | from ganeti import ht |
60 | a06c6ae8 | Michael Hanselmann | from ganeti import query |
61 | a06c6ae8 | Michael Hanselmann | from ganeti import qlang |
62 | e2715f69 | Michael Hanselmann | |
63 | fbf0262f | Michael Hanselmann | |
64 | 1daae384 | Iustin Pop | JOBQUEUE_THREADS = 25
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65 | 58b22b6e | Michael Hanselmann | JOBS_PER_ARCHIVE_DIRECTORY = 10000
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66 | e2715f69 | Michael Hanselmann | |
67 | ebb80afa | Guido Trotter | # member lock names to be passed to @ssynchronized decorator
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68 | ebb80afa | Guido Trotter | _LOCK = "_lock"
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69 | ebb80afa | Guido Trotter | _QUEUE = "_queue"
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70 | 99bd4f0a | Guido Trotter | |
71 | 498ae1cc | Iustin Pop | |
72 | 9728ae5d | Iustin Pop | class CancelJob(Exception): |
73 | fbf0262f | Michael Hanselmann | """Special exception to cancel a job.
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74 | fbf0262f | Michael Hanselmann |
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75 | fbf0262f | Michael Hanselmann | """
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76 | fbf0262f | Michael Hanselmann | |
77 | fbf0262f | Michael Hanselmann | |
78 | 70552c46 | Michael Hanselmann | def TimeStampNow(): |
79 | ea03467c | Iustin Pop | """Returns the current timestamp.
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80 | ea03467c | Iustin Pop |
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81 | ea03467c | Iustin Pop | @rtype: tuple
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82 | ea03467c | Iustin Pop | @return: the current time in the (seconds, microseconds) format
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83 | ea03467c | Iustin Pop |
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84 | ea03467c | Iustin Pop | """
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85 | 70552c46 | Michael Hanselmann | return utils.SplitTime(time.time())
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86 | 70552c46 | Michael Hanselmann | |
87 | 70552c46 | Michael Hanselmann | |
88 | a06c6ae8 | Michael Hanselmann | class _SimpleJobQuery: |
89 | a06c6ae8 | Michael Hanselmann | """Wrapper for job queries.
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90 | a06c6ae8 | Michael Hanselmann |
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91 | a06c6ae8 | Michael Hanselmann | Instance keeps list of fields cached, useful e.g. in L{_JobChangesChecker}.
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92 | a06c6ae8 | Michael Hanselmann |
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93 | a06c6ae8 | Michael Hanselmann | """
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94 | a06c6ae8 | Michael Hanselmann | def __init__(self, fields): |
95 | a06c6ae8 | Michael Hanselmann | """Initializes this class.
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96 | a06c6ae8 | Michael Hanselmann |
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97 | a06c6ae8 | Michael Hanselmann | """
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98 | a06c6ae8 | Michael Hanselmann | self._query = query.Query(query.JOB_FIELDS, fields)
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99 | a06c6ae8 | Michael Hanselmann | |
100 | a06c6ae8 | Michael Hanselmann | def __call__(self, job): |
101 | a06c6ae8 | Michael Hanselmann | """Executes a job query using cached field list.
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102 | a06c6ae8 | Michael Hanselmann |
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103 | a06c6ae8 | Michael Hanselmann | """
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104 | a06c6ae8 | Michael Hanselmann | return self._query.OldStyleQuery([(job.id, job)], sort_by_name=False)[0] |
105 | a06c6ae8 | Michael Hanselmann | |
106 | a06c6ae8 | Michael Hanselmann | |
107 | e2715f69 | Michael Hanselmann | class _QueuedOpCode(object): |
108 | 5bbd3f7f | Michael Hanselmann | """Encapsulates an opcode object.
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109 | e2715f69 | Michael Hanselmann |
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110 | ea03467c | Iustin Pop | @ivar log: holds the execution log and consists of tuples
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111 | ea03467c | Iustin Pop | of the form C{(log_serial, timestamp, level, message)}
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112 | ea03467c | Iustin Pop | @ivar input: the OpCode we encapsulate
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113 | ea03467c | Iustin Pop | @ivar status: the current status
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114 | ea03467c | Iustin Pop | @ivar result: the result of the LU execution
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115 | ea03467c | Iustin Pop | @ivar start_timestamp: timestamp for the start of the execution
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116 | b9b5abcb | Iustin Pop | @ivar exec_timestamp: timestamp for the actual LU Exec() function invocation
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117 | ea03467c | Iustin Pop | @ivar stop_timestamp: timestamp for the end of the execution
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118 | f1048938 | Iustin Pop |
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119 | e2715f69 | Michael Hanselmann | """
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120 | 8f5c488d | Michael Hanselmann | __slots__ = ["input", "status", "result", "log", "priority", |
121 | b9b5abcb | Iustin Pop | "start_timestamp", "exec_timestamp", "end_timestamp", |
122 | 66d895a8 | Iustin Pop | "__weakref__"]
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123 | 66d895a8 | Iustin Pop | |
124 | 85f03e0d | Michael Hanselmann | def __init__(self, op): |
125 | 66abb9ff | Michael Hanselmann | """Initializes instances of this class.
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126 | ea03467c | Iustin Pop |
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127 | ea03467c | Iustin Pop | @type op: L{opcodes.OpCode}
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128 | ea03467c | Iustin Pop | @param op: the opcode we encapsulate
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129 | ea03467c | Iustin Pop |
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130 | ea03467c | Iustin Pop | """
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131 | 85f03e0d | Michael Hanselmann | self.input = op
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132 | 85f03e0d | Michael Hanselmann | self.status = constants.OP_STATUS_QUEUED
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133 | 85f03e0d | Michael Hanselmann | self.result = None |
134 | 85f03e0d | Michael Hanselmann | self.log = []
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135 | 70552c46 | Michael Hanselmann | self.start_timestamp = None |
136 | b9b5abcb | Iustin Pop | self.exec_timestamp = None |
137 | 70552c46 | Michael Hanselmann | self.end_timestamp = None |
138 | f1da30e6 | Michael Hanselmann | |
139 | 8f5c488d | Michael Hanselmann | # Get initial priority (it might change during the lifetime of this opcode)
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140 | 8f5c488d | Michael Hanselmann | self.priority = getattr(op, "priority", constants.OP_PRIO_DEFAULT) |
141 | 8f5c488d | Michael Hanselmann | |
142 | f1da30e6 | Michael Hanselmann | @classmethod
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143 | f1da30e6 | Michael Hanselmann | def Restore(cls, state): |
144 | ea03467c | Iustin Pop | """Restore the _QueuedOpCode from the serialized form.
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145 | ea03467c | Iustin Pop |
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146 | ea03467c | Iustin Pop | @type state: dict
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147 | ea03467c | Iustin Pop | @param state: the serialized state
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148 | ea03467c | Iustin Pop | @rtype: _QueuedOpCode
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149 | ea03467c | Iustin Pop | @return: a new _QueuedOpCode instance
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150 | ea03467c | Iustin Pop |
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151 | ea03467c | Iustin Pop | """
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152 | 85f03e0d | Michael Hanselmann | obj = _QueuedOpCode.__new__(cls) |
153 | 85f03e0d | Michael Hanselmann | obj.input = opcodes.OpCode.LoadOpCode(state["input"])
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154 | 85f03e0d | Michael Hanselmann | obj.status = state["status"]
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155 | 85f03e0d | Michael Hanselmann | obj.result = state["result"]
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156 | 85f03e0d | Michael Hanselmann | obj.log = state["log"]
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157 | 70552c46 | Michael Hanselmann | obj.start_timestamp = state.get("start_timestamp", None) |
158 | b9b5abcb | Iustin Pop | obj.exec_timestamp = state.get("exec_timestamp", None) |
159 | 70552c46 | Michael Hanselmann | obj.end_timestamp = state.get("end_timestamp", None) |
160 | 8f5c488d | Michael Hanselmann | obj.priority = state.get("priority", constants.OP_PRIO_DEFAULT)
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161 | f1da30e6 | Michael Hanselmann | return obj
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162 | f1da30e6 | Michael Hanselmann | |
163 | f1da30e6 | Michael Hanselmann | def Serialize(self): |
164 | ea03467c | Iustin Pop | """Serializes this _QueuedOpCode.
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165 | ea03467c | Iustin Pop |
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166 | ea03467c | Iustin Pop | @rtype: dict
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167 | ea03467c | Iustin Pop | @return: the dictionary holding the serialized state
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168 | ea03467c | Iustin Pop |
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169 | ea03467c | Iustin Pop | """
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170 | 6c5a7090 | Michael Hanselmann | return {
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171 | 6c5a7090 | Michael Hanselmann | "input": self.input.__getstate__(), |
172 | 6c5a7090 | Michael Hanselmann | "status": self.status, |
173 | 6c5a7090 | Michael Hanselmann | "result": self.result, |
174 | 6c5a7090 | Michael Hanselmann | "log": self.log, |
175 | 70552c46 | Michael Hanselmann | "start_timestamp": self.start_timestamp, |
176 | b9b5abcb | Iustin Pop | "exec_timestamp": self.exec_timestamp, |
177 | 70552c46 | Michael Hanselmann | "end_timestamp": self.end_timestamp, |
178 | 8f5c488d | Michael Hanselmann | "priority": self.priority, |
179 | 6c5a7090 | Michael Hanselmann | } |
180 | f1048938 | Iustin Pop | |
181 | e2715f69 | Michael Hanselmann | |
182 | e2715f69 | Michael Hanselmann | class _QueuedJob(object): |
183 | e2715f69 | Michael Hanselmann | """In-memory job representation.
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184 | e2715f69 | Michael Hanselmann |
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185 | ea03467c | Iustin Pop | This is what we use to track the user-submitted jobs. Locking must
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186 | ea03467c | Iustin Pop | be taken care of by users of this class.
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187 | ea03467c | Iustin Pop |
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188 | ea03467c | Iustin Pop | @type queue: L{JobQueue}
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189 | ea03467c | Iustin Pop | @ivar queue: the parent queue
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190 | ea03467c | Iustin Pop | @ivar id: the job ID
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191 | ea03467c | Iustin Pop | @type ops: list
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192 | ea03467c | Iustin Pop | @ivar ops: the list of _QueuedOpCode that constitute the job
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193 | ea03467c | Iustin Pop | @type log_serial: int
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194 | ea03467c | Iustin Pop | @ivar log_serial: holds the index for the next log entry
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195 | ea03467c | Iustin Pop | @ivar received_timestamp: the timestamp for when the job was received
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196 | ea03467c | Iustin Pop | @ivar start_timestmap: the timestamp for start of execution
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197 | ea03467c | Iustin Pop | @ivar end_timestamp: the timestamp for end of execution
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198 | c0f6d0d8 | Michael Hanselmann | @ivar writable: Whether the job is allowed to be modified
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199 | e2715f69 | Michael Hanselmann |
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200 | e2715f69 | Michael Hanselmann | """
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201 | b459a848 | Andrea Spadaccini | # pylint: disable=W0212
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202 | 26d3fd2f | Michael Hanselmann | __slots__ = ["queue", "id", "ops", "log_serial", "ops_iter", "cur_opctx", |
203 | 66d895a8 | Iustin Pop | "received_timestamp", "start_timestamp", "end_timestamp", |
204 | c0f6d0d8 | Michael Hanselmann | "__weakref__", "processor_lock", "writable"] |
205 | 66d895a8 | Iustin Pop | |
206 | c0f6d0d8 | Michael Hanselmann | def __init__(self, queue, job_id, ops, writable): |
207 | ea03467c | Iustin Pop | """Constructor for the _QueuedJob.
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208 | ea03467c | Iustin Pop |
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209 | ea03467c | Iustin Pop | @type queue: L{JobQueue}
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210 | ea03467c | Iustin Pop | @param queue: our parent queue
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211 | ea03467c | Iustin Pop | @type job_id: job_id
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212 | ea03467c | Iustin Pop | @param job_id: our job id
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213 | ea03467c | Iustin Pop | @type ops: list
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214 | ea03467c | Iustin Pop | @param ops: the list of opcodes we hold, which will be encapsulated
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215 | ea03467c | Iustin Pop | in _QueuedOpCodes
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216 | c0f6d0d8 | Michael Hanselmann | @type writable: bool
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217 | c0f6d0d8 | Michael Hanselmann | @param writable: Whether job can be modified
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218 | ea03467c | Iustin Pop |
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219 | ea03467c | Iustin Pop | """
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220 | e2715f69 | Michael Hanselmann | if not ops: |
221 | c910bccb | Guido Trotter | raise errors.GenericError("A job needs at least one opcode") |
222 | e2715f69 | Michael Hanselmann | |
223 | 85f03e0d | Michael Hanselmann | self.queue = queue
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224 | f1da30e6 | Michael Hanselmann | self.id = job_id
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225 | 85f03e0d | Michael Hanselmann | self.ops = [_QueuedOpCode(op) for op in ops] |
226 | 6c5a7090 | Michael Hanselmann | self.log_serial = 0 |
227 | c56ec146 | Iustin Pop | self.received_timestamp = TimeStampNow()
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228 | c56ec146 | Iustin Pop | self.start_timestamp = None |
229 | c56ec146 | Iustin Pop | self.end_timestamp = None |
230 | 6c5a7090 | Michael Hanselmann | |
231 | c0f6d0d8 | Michael Hanselmann | self._InitInMemory(self, writable) |
232 | fa4aa6b4 | Michael Hanselmann | |
233 | fa4aa6b4 | Michael Hanselmann | @staticmethod
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234 | c0f6d0d8 | Michael Hanselmann | def _InitInMemory(obj, writable): |
235 | fa4aa6b4 | Michael Hanselmann | """Initializes in-memory variables.
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236 | fa4aa6b4 | Michael Hanselmann |
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237 | fa4aa6b4 | Michael Hanselmann | """
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238 | c0f6d0d8 | Michael Hanselmann | obj.writable = writable |
239 | 03b63608 | Michael Hanselmann | obj.ops_iter = None
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240 | 26d3fd2f | Michael Hanselmann | obj.cur_opctx = None
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241 | f8a4adfa | Michael Hanselmann | |
242 | f8a4adfa | Michael Hanselmann | # Read-only jobs are not processed and therefore don't need a lock
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243 | f8a4adfa | Michael Hanselmann | if writable:
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244 | f8a4adfa | Michael Hanselmann | obj.processor_lock = threading.Lock() |
245 | f8a4adfa | Michael Hanselmann | else:
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246 | f8a4adfa | Michael Hanselmann | obj.processor_lock = None
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247 | be760ba8 | Michael Hanselmann | |
248 | 9fa2e150 | Michael Hanselmann | def __repr__(self): |
249 | 9fa2e150 | Michael Hanselmann | status = ["%s.%s" % (self.__class__.__module__, self.__class__.__name__), |
250 | 9fa2e150 | Michael Hanselmann | "id=%s" % self.id, |
251 | 9fa2e150 | Michael Hanselmann | "ops=%s" % ",".join([op.input.Summary() for op in self.ops])] |
252 | 9fa2e150 | Michael Hanselmann | |
253 | 9fa2e150 | Michael Hanselmann | return "<%s at %#x>" % (" ".join(status), id(self)) |
254 | 9fa2e150 | Michael Hanselmann | |
255 | f1da30e6 | Michael Hanselmann | @classmethod
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256 | c0f6d0d8 | Michael Hanselmann | def Restore(cls, queue, state, writable): |
257 | ea03467c | Iustin Pop | """Restore a _QueuedJob from serialized state:
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258 | ea03467c | Iustin Pop |
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259 | ea03467c | Iustin Pop | @type queue: L{JobQueue}
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260 | ea03467c | Iustin Pop | @param queue: to which queue the restored job belongs
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261 | ea03467c | Iustin Pop | @type state: dict
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262 | ea03467c | Iustin Pop | @param state: the serialized state
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263 | c0f6d0d8 | Michael Hanselmann | @type writable: bool
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264 | c0f6d0d8 | Michael Hanselmann | @param writable: Whether job can be modified
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265 | ea03467c | Iustin Pop | @rtype: _JobQueue
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266 | ea03467c | Iustin Pop | @return: the restored _JobQueue instance
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267 | ea03467c | Iustin Pop |
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268 | ea03467c | Iustin Pop | """
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269 | 85f03e0d | Michael Hanselmann | obj = _QueuedJob.__new__(cls) |
270 | 85f03e0d | Michael Hanselmann | obj.queue = queue |
271 | 85f03e0d | Michael Hanselmann | obj.id = state["id"]
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272 | c56ec146 | Iustin Pop | obj.received_timestamp = state.get("received_timestamp", None) |
273 | c56ec146 | Iustin Pop | obj.start_timestamp = state.get("start_timestamp", None) |
274 | c56ec146 | Iustin Pop | obj.end_timestamp = state.get("end_timestamp", None) |
275 | 6c5a7090 | Michael Hanselmann | |
276 | 6c5a7090 | Michael Hanselmann | obj.ops = [] |
277 | 6c5a7090 | Michael Hanselmann | obj.log_serial = 0
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278 | 6c5a7090 | Michael Hanselmann | for op_state in state["ops"]: |
279 | 6c5a7090 | Michael Hanselmann | op = _QueuedOpCode.Restore(op_state) |
280 | 6c5a7090 | Michael Hanselmann | for log_entry in op.log: |
281 | 6c5a7090 | Michael Hanselmann | obj.log_serial = max(obj.log_serial, log_entry[0]) |
282 | 6c5a7090 | Michael Hanselmann | obj.ops.append(op) |
283 | 6c5a7090 | Michael Hanselmann | |
284 | c0f6d0d8 | Michael Hanselmann | cls._InitInMemory(obj, writable) |
285 | be760ba8 | Michael Hanselmann | |
286 | f1da30e6 | Michael Hanselmann | return obj
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287 | f1da30e6 | Michael Hanselmann | |
288 | f1da30e6 | Michael Hanselmann | def Serialize(self): |
289 | ea03467c | Iustin Pop | """Serialize the _JobQueue instance.
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290 | ea03467c | Iustin Pop |
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291 | ea03467c | Iustin Pop | @rtype: dict
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292 | ea03467c | Iustin Pop | @return: the serialized state
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293 | ea03467c | Iustin Pop |
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294 | ea03467c | Iustin Pop | """
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295 | f1da30e6 | Michael Hanselmann | return {
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296 | f1da30e6 | Michael Hanselmann | "id": self.id, |
297 | 85f03e0d | Michael Hanselmann | "ops": [op.Serialize() for op in self.ops], |
298 | c56ec146 | Iustin Pop | "start_timestamp": self.start_timestamp, |
299 | c56ec146 | Iustin Pop | "end_timestamp": self.end_timestamp, |
300 | c56ec146 | Iustin Pop | "received_timestamp": self.received_timestamp, |
301 | f1da30e6 | Michael Hanselmann | } |
302 | f1da30e6 | Michael Hanselmann | |
303 | 85f03e0d | Michael Hanselmann | def CalcStatus(self): |
304 | ea03467c | Iustin Pop | """Compute the status of this job.
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305 | ea03467c | Iustin Pop |
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306 | ea03467c | Iustin Pop | This function iterates over all the _QueuedOpCodes in the job and
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307 | ea03467c | Iustin Pop | based on their status, computes the job status.
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308 | ea03467c | Iustin Pop |
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309 | ea03467c | Iustin Pop | The algorithm is:
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310 | ea03467c | Iustin Pop | - if we find a cancelled, or finished with error, the job
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311 | ea03467c | Iustin Pop | status will be the same
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312 | ea03467c | Iustin Pop | - otherwise, the last opcode with the status one of:
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313 | ea03467c | Iustin Pop | - waitlock
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314 | fbf0262f | Michael Hanselmann | - canceling
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315 | ea03467c | Iustin Pop | - running
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316 | ea03467c | Iustin Pop |
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317 | ea03467c | Iustin Pop | will determine the job status
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318 | ea03467c | Iustin Pop |
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319 | ea03467c | Iustin Pop | - otherwise, it means either all opcodes are queued, or success,
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320 | ea03467c | Iustin Pop | and the job status will be the same
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321 | ea03467c | Iustin Pop |
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322 | ea03467c | Iustin Pop | @return: the job status
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323 | ea03467c | Iustin Pop |
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324 | ea03467c | Iustin Pop | """
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325 | e2715f69 | Michael Hanselmann | status = constants.JOB_STATUS_QUEUED |
326 | e2715f69 | Michael Hanselmann | |
327 | e2715f69 | Michael Hanselmann | all_success = True
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328 | 85f03e0d | Michael Hanselmann | for op in self.ops: |
329 | 85f03e0d | Michael Hanselmann | if op.status == constants.OP_STATUS_SUCCESS:
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330 | e2715f69 | Michael Hanselmann | continue
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331 | e2715f69 | Michael Hanselmann | |
332 | e2715f69 | Michael Hanselmann | all_success = False
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333 | e2715f69 | Michael Hanselmann | |
334 | 85f03e0d | Michael Hanselmann | if op.status == constants.OP_STATUS_QUEUED:
|
335 | e2715f69 | Michael Hanselmann | pass
|
336 | 47099cd1 | Michael Hanselmann | elif op.status == constants.OP_STATUS_WAITING:
|
337 | 47099cd1 | Michael Hanselmann | status = constants.JOB_STATUS_WAITING |
338 | 85f03e0d | Michael Hanselmann | elif op.status == constants.OP_STATUS_RUNNING:
|
339 | e2715f69 | Michael Hanselmann | status = constants.JOB_STATUS_RUNNING |
340 | fbf0262f | Michael Hanselmann | elif op.status == constants.OP_STATUS_CANCELING:
|
341 | fbf0262f | Michael Hanselmann | status = constants.JOB_STATUS_CANCELING |
342 | fbf0262f | Michael Hanselmann | break
|
343 | 85f03e0d | Michael Hanselmann | elif op.status == constants.OP_STATUS_ERROR:
|
344 | f1da30e6 | Michael Hanselmann | status = constants.JOB_STATUS_ERROR |
345 | f1da30e6 | Michael Hanselmann | # The whole job fails if one opcode failed
|
346 | f1da30e6 | Michael Hanselmann | break
|
347 | 85f03e0d | Michael Hanselmann | elif op.status == constants.OP_STATUS_CANCELED:
|
348 | 4cb1d919 | Michael Hanselmann | status = constants.OP_STATUS_CANCELED |
349 | 4cb1d919 | Michael Hanselmann | break
|
350 | e2715f69 | Michael Hanselmann | |
351 | e2715f69 | Michael Hanselmann | if all_success:
|
352 | e2715f69 | Michael Hanselmann | status = constants.JOB_STATUS_SUCCESS |
353 | e2715f69 | Michael Hanselmann | |
354 | e2715f69 | Michael Hanselmann | return status
|
355 | e2715f69 | Michael Hanselmann | |
356 | 8f5c488d | Michael Hanselmann | def CalcPriority(self): |
357 | 8f5c488d | Michael Hanselmann | """Gets the current priority for this job.
|
358 | 8f5c488d | Michael Hanselmann |
|
359 | 8f5c488d | Michael Hanselmann | Only unfinished opcodes are considered. When all are done, the default
|
360 | 8f5c488d | Michael Hanselmann | priority is used.
|
361 | 8f5c488d | Michael Hanselmann |
|
362 | 8f5c488d | Michael Hanselmann | @rtype: int
|
363 | 8f5c488d | Michael Hanselmann |
|
364 | 8f5c488d | Michael Hanselmann | """
|
365 | 8f5c488d | Michael Hanselmann | priorities = [op.priority for op in self.ops |
366 | 8f5c488d | Michael Hanselmann | if op.status not in constants.OPS_FINALIZED] |
367 | 8f5c488d | Michael Hanselmann | |
368 | 8f5c488d | Michael Hanselmann | if not priorities: |
369 | 8f5c488d | Michael Hanselmann | # All opcodes are done, assume default priority
|
370 | 8f5c488d | Michael Hanselmann | return constants.OP_PRIO_DEFAULT
|
371 | 8f5c488d | Michael Hanselmann | |
372 | 8f5c488d | Michael Hanselmann | return min(priorities) |
373 | 8f5c488d | Michael Hanselmann | |
374 | 6c5a7090 | Michael Hanselmann | def GetLogEntries(self, newer_than): |
375 | ea03467c | Iustin Pop | """Selectively returns the log entries.
|
376 | ea03467c | Iustin Pop |
|
377 | ea03467c | Iustin Pop | @type newer_than: None or int
|
378 | 5bbd3f7f | Michael Hanselmann | @param newer_than: if this is None, return all log entries,
|
379 | ea03467c | Iustin Pop | otherwise return only the log entries with serial higher
|
380 | ea03467c | Iustin Pop | than this value
|
381 | ea03467c | Iustin Pop | @rtype: list
|
382 | ea03467c | Iustin Pop | @return: the list of the log entries selected
|
383 | ea03467c | Iustin Pop |
|
384 | ea03467c | Iustin Pop | """
|
385 | 6c5a7090 | Michael Hanselmann | if newer_than is None: |
386 | 6c5a7090 | Michael Hanselmann | serial = -1
|
387 | 6c5a7090 | Michael Hanselmann | else:
|
388 | 6c5a7090 | Michael Hanselmann | serial = newer_than |
389 | 6c5a7090 | Michael Hanselmann | |
390 | 6c5a7090 | Michael Hanselmann | entries = [] |
391 | 6c5a7090 | Michael Hanselmann | for op in self.ops: |
392 | 63712a09 | Iustin Pop | entries.extend(filter(lambda entry: entry[0] > serial, op.log)) |
393 | 6c5a7090 | Michael Hanselmann | |
394 | 6c5a7090 | Michael Hanselmann | return entries
|
395 | 6c5a7090 | Michael Hanselmann | |
396 | 6a290889 | Guido Trotter | def GetInfo(self, fields): |
397 | 6a290889 | Guido Trotter | """Returns information about a job.
|
398 | 6a290889 | Guido Trotter |
|
399 | 6a290889 | Guido Trotter | @type fields: list
|
400 | 6a290889 | Guido Trotter | @param fields: names of fields to return
|
401 | 6a290889 | Guido Trotter | @rtype: list
|
402 | 6a290889 | Guido Trotter | @return: list with one element for each field
|
403 | 6a290889 | Guido Trotter | @raise errors.OpExecError: when an invalid field
|
404 | 6a290889 | Guido Trotter | has been passed
|
405 | 6a290889 | Guido Trotter |
|
406 | 6a290889 | Guido Trotter | """
|
407 | a06c6ae8 | Michael Hanselmann | return _SimpleJobQuery(fields)(self) |
408 | 6a290889 | Guido Trotter | |
409 | 34327f51 | Iustin Pop | def MarkUnfinishedOps(self, status, result): |
410 | 34327f51 | Iustin Pop | """Mark unfinished opcodes with a given status and result.
|
411 | 34327f51 | Iustin Pop |
|
412 | 34327f51 | Iustin Pop | This is an utility function for marking all running or waiting to
|
413 | 34327f51 | Iustin Pop | be run opcodes with a given status. Opcodes which are already
|
414 | 34327f51 | Iustin Pop | finalised are not changed.
|
415 | 34327f51 | Iustin Pop |
|
416 | 34327f51 | Iustin Pop | @param status: a given opcode status
|
417 | 34327f51 | Iustin Pop | @param result: the opcode result
|
418 | 34327f51 | Iustin Pop |
|
419 | 34327f51 | Iustin Pop | """
|
420 | 747f6113 | Michael Hanselmann | not_marked = True
|
421 | 747f6113 | Michael Hanselmann | for op in self.ops: |
422 | 747f6113 | Michael Hanselmann | if op.status in constants.OPS_FINALIZED: |
423 | 747f6113 | Michael Hanselmann | assert not_marked, "Finalized opcodes found after non-finalized ones" |
424 | 747f6113 | Michael Hanselmann | continue
|
425 | 747f6113 | Michael Hanselmann | op.status = status |
426 | 747f6113 | Michael Hanselmann | op.result = result |
427 | 747f6113 | Michael Hanselmann | not_marked = False
|
428 | 34327f51 | Iustin Pop | |
429 | 66bd7445 | Michael Hanselmann | def Finalize(self): |
430 | 66bd7445 | Michael Hanselmann | """Marks the job as finalized.
|
431 | 66bd7445 | Michael Hanselmann |
|
432 | 66bd7445 | Michael Hanselmann | """
|
433 | 66bd7445 | Michael Hanselmann | self.end_timestamp = TimeStampNow()
|
434 | 66bd7445 | Michael Hanselmann | |
435 | 099b2870 | Michael Hanselmann | def Cancel(self): |
436 | a0d2fe2c | Michael Hanselmann | """Marks job as canceled/-ing if possible.
|
437 | a0d2fe2c | Michael Hanselmann |
|
438 | a0d2fe2c | Michael Hanselmann | @rtype: tuple; (bool, string)
|
439 | a0d2fe2c | Michael Hanselmann | @return: Boolean describing whether job was successfully canceled or marked
|
440 | a0d2fe2c | Michael Hanselmann | as canceling and a text message
|
441 | a0d2fe2c | Michael Hanselmann |
|
442 | a0d2fe2c | Michael Hanselmann | """
|
443 | 099b2870 | Michael Hanselmann | status = self.CalcStatus()
|
444 | 099b2870 | Michael Hanselmann | |
445 | 099b2870 | Michael Hanselmann | if status == constants.JOB_STATUS_QUEUED:
|
446 | 099b2870 | Michael Hanselmann | self.MarkUnfinishedOps(constants.OP_STATUS_CANCELED,
|
447 | 099b2870 | Michael Hanselmann | "Job canceled by request")
|
448 | 66bd7445 | Michael Hanselmann | self.Finalize()
|
449 | 86b16e9d | Michael Hanselmann | return (True, "Job %s canceled" % self.id) |
450 | 099b2870 | Michael Hanselmann | |
451 | 47099cd1 | Michael Hanselmann | elif status == constants.JOB_STATUS_WAITING:
|
452 | 099b2870 | Michael Hanselmann | # The worker will notice the new status and cancel the job
|
453 | 099b2870 | Michael Hanselmann | self.MarkUnfinishedOps(constants.OP_STATUS_CANCELING, None) |
454 | 86b16e9d | Michael Hanselmann | return (True, "Job %s will be canceled" % self.id) |
455 | 099b2870 | Michael Hanselmann | |
456 | 86b16e9d | Michael Hanselmann | else:
|
457 | 86b16e9d | Michael Hanselmann | logging.debug("Job %s is no longer waiting in the queue", self.id) |
458 | 86b16e9d | Michael Hanselmann | return (False, "Job %s is no longer waiting in the queue" % self.id) |
459 | 099b2870 | Michael Hanselmann | |
460 | f1048938 | Iustin Pop | |
461 | ef2df7d3 | Michael Hanselmann | class _OpExecCallbacks(mcpu.OpExecCbBase): |
462 | 031a3e57 | Michael Hanselmann | def __init__(self, queue, job, op): |
463 | 031a3e57 | Michael Hanselmann | """Initializes this class.
|
464 | ea03467c | Iustin Pop |
|
465 | 031a3e57 | Michael Hanselmann | @type queue: L{JobQueue}
|
466 | 031a3e57 | Michael Hanselmann | @param queue: Job queue
|
467 | 031a3e57 | Michael Hanselmann | @type job: L{_QueuedJob}
|
468 | 031a3e57 | Michael Hanselmann | @param job: Job object
|
469 | 031a3e57 | Michael Hanselmann | @type op: L{_QueuedOpCode}
|
470 | 031a3e57 | Michael Hanselmann | @param op: OpCode
|
471 | 031a3e57 | Michael Hanselmann |
|
472 | 031a3e57 | Michael Hanselmann | """
|
473 | 031a3e57 | Michael Hanselmann | assert queue, "Queue is missing" |
474 | 031a3e57 | Michael Hanselmann | assert job, "Job is missing" |
475 | 031a3e57 | Michael Hanselmann | assert op, "Opcode is missing" |
476 | 031a3e57 | Michael Hanselmann | |
477 | 031a3e57 | Michael Hanselmann | self._queue = queue
|
478 | 031a3e57 | Michael Hanselmann | self._job = job
|
479 | 031a3e57 | Michael Hanselmann | self._op = op
|
480 | 031a3e57 | Michael Hanselmann | |
481 | dc1e2262 | Michael Hanselmann | def _CheckCancel(self): |
482 | dc1e2262 | Michael Hanselmann | """Raises an exception to cancel the job if asked to.
|
483 | dc1e2262 | Michael Hanselmann |
|
484 | dc1e2262 | Michael Hanselmann | """
|
485 | dc1e2262 | Michael Hanselmann | # Cancel here if we were asked to
|
486 | dc1e2262 | Michael Hanselmann | if self._op.status == constants.OP_STATUS_CANCELING: |
487 | dc1e2262 | Michael Hanselmann | logging.debug("Canceling opcode")
|
488 | dc1e2262 | Michael Hanselmann | raise CancelJob()
|
489 | dc1e2262 | Michael Hanselmann | |
490 | 271daef8 | Iustin Pop | @locking.ssynchronized(_QUEUE, shared=1) |
491 | 031a3e57 | Michael Hanselmann | def NotifyStart(self): |
492 | e92376d7 | Iustin Pop | """Mark the opcode as running, not lock-waiting.
|
493 | e92376d7 | Iustin Pop |
|
494 | 031a3e57 | Michael Hanselmann | This is called from the mcpu code as a notifier function, when the LU is
|
495 | 031a3e57 | Michael Hanselmann | finally about to start the Exec() method. Of course, to have end-user
|
496 | 031a3e57 | Michael Hanselmann | visible results, the opcode must be initially (before calling into
|
497 | 47099cd1 | Michael Hanselmann | Processor.ExecOpCode) set to OP_STATUS_WAITING.
|
498 | e92376d7 | Iustin Pop |
|
499 | e92376d7 | Iustin Pop | """
|
500 | 9bdab621 | Michael Hanselmann | assert self._op in self._job.ops |
501 | 47099cd1 | Michael Hanselmann | assert self._op.status in (constants.OP_STATUS_WAITING, |
502 | 271daef8 | Iustin Pop | constants.OP_STATUS_CANCELING) |
503 | fbf0262f | Michael Hanselmann | |
504 | 271daef8 | Iustin Pop | # Cancel here if we were asked to
|
505 | dc1e2262 | Michael Hanselmann | self._CheckCancel()
|
506 | fbf0262f | Michael Hanselmann | |
507 | e35344b4 | Michael Hanselmann | logging.debug("Opcode is now running")
|
508 | 9bdab621 | Michael Hanselmann | |
509 | 271daef8 | Iustin Pop | self._op.status = constants.OP_STATUS_RUNNING
|
510 | 271daef8 | Iustin Pop | self._op.exec_timestamp = TimeStampNow()
|
511 | 271daef8 | Iustin Pop | |
512 | 271daef8 | Iustin Pop | # And finally replicate the job status
|
513 | 271daef8 | Iustin Pop | self._queue.UpdateJobUnlocked(self._job) |
514 | 031a3e57 | Michael Hanselmann | |
515 | ebb80afa | Guido Trotter | @locking.ssynchronized(_QUEUE, shared=1) |
516 | 9bf5e01f | Guido Trotter | def _AppendFeedback(self, timestamp, log_type, log_msg): |
517 | 9bf5e01f | Guido Trotter | """Internal feedback append function, with locks
|
518 | 9bf5e01f | Guido Trotter |
|
519 | 9bf5e01f | Guido Trotter | """
|
520 | 9bf5e01f | Guido Trotter | self._job.log_serial += 1 |
521 | 9bf5e01f | Guido Trotter | self._op.log.append((self._job.log_serial, timestamp, log_type, log_msg)) |
522 | 9bf5e01f | Guido Trotter | self._queue.UpdateJobUnlocked(self._job, replicate=False) |
523 | 9bf5e01f | Guido Trotter | |
524 | 031a3e57 | Michael Hanselmann | def Feedback(self, *args): |
525 | 031a3e57 | Michael Hanselmann | """Append a log entry.
|
526 | 031a3e57 | Michael Hanselmann |
|
527 | 031a3e57 | Michael Hanselmann | """
|
528 | 031a3e57 | Michael Hanselmann | assert len(args) < 3 |
529 | 031a3e57 | Michael Hanselmann | |
530 | 031a3e57 | Michael Hanselmann | if len(args) == 1: |
531 | 031a3e57 | Michael Hanselmann | log_type = constants.ELOG_MESSAGE |
532 | 031a3e57 | Michael Hanselmann | log_msg = args[0]
|
533 | 031a3e57 | Michael Hanselmann | else:
|
534 | 031a3e57 | Michael Hanselmann | (log_type, log_msg) = args |
535 | 031a3e57 | Michael Hanselmann | |
536 | 031a3e57 | Michael Hanselmann | # The time is split to make serialization easier and not lose
|
537 | 031a3e57 | Michael Hanselmann | # precision.
|
538 | 031a3e57 | Michael Hanselmann | timestamp = utils.SplitTime(time.time()) |
539 | 9bf5e01f | Guido Trotter | self._AppendFeedback(timestamp, log_type, log_msg)
|
540 | 031a3e57 | Michael Hanselmann | |
541 | acf931b7 | Michael Hanselmann | def CheckCancel(self): |
542 | acf931b7 | Michael Hanselmann | """Check whether job has been cancelled.
|
543 | ef2df7d3 | Michael Hanselmann |
|
544 | ef2df7d3 | Michael Hanselmann | """
|
545 | 47099cd1 | Michael Hanselmann | assert self._op.status in (constants.OP_STATUS_WAITING, |
546 | dc1e2262 | Michael Hanselmann | constants.OP_STATUS_CANCELING) |
547 | dc1e2262 | Michael Hanselmann | |
548 | dc1e2262 | Michael Hanselmann | # Cancel here if we were asked to
|
549 | dc1e2262 | Michael Hanselmann | self._CheckCancel()
|
550 | dc1e2262 | Michael Hanselmann | |
551 | 6a373640 | Michael Hanselmann | def SubmitManyJobs(self, jobs): |
552 | 6a373640 | Michael Hanselmann | """Submits jobs for processing.
|
553 | 6a373640 | Michael Hanselmann |
|
554 | 6a373640 | Michael Hanselmann | See L{JobQueue.SubmitManyJobs}.
|
555 | 6a373640 | Michael Hanselmann |
|
556 | 6a373640 | Michael Hanselmann | """
|
557 | 6a373640 | Michael Hanselmann | # Locking is done in job queue
|
558 | 6a373640 | Michael Hanselmann | return self._queue.SubmitManyJobs(jobs) |
559 | 6a373640 | Michael Hanselmann | |
560 | 031a3e57 | Michael Hanselmann | |
561 | 989a8bee | Michael Hanselmann | class _JobChangesChecker(object): |
562 | 989a8bee | Michael Hanselmann | def __init__(self, fields, prev_job_info, prev_log_serial): |
563 | 989a8bee | Michael Hanselmann | """Initializes this class.
|
564 | 6c2549d6 | Guido Trotter |
|
565 | 989a8bee | Michael Hanselmann | @type fields: list of strings
|
566 | 989a8bee | Michael Hanselmann | @param fields: Fields requested by LUXI client
|
567 | 989a8bee | Michael Hanselmann | @type prev_job_info: string
|
568 | 989a8bee | Michael Hanselmann | @param prev_job_info: previous job info, as passed by the LUXI client
|
569 | 989a8bee | Michael Hanselmann | @type prev_log_serial: string
|
570 | 989a8bee | Michael Hanselmann | @param prev_log_serial: previous job serial, as passed by the LUXI client
|
571 | 6c2549d6 | Guido Trotter |
|
572 | 989a8bee | Michael Hanselmann | """
|
573 | dc2879ea | Michael Hanselmann | self._squery = _SimpleJobQuery(fields)
|
574 | 989a8bee | Michael Hanselmann | self._prev_job_info = prev_job_info
|
575 | 989a8bee | Michael Hanselmann | self._prev_log_serial = prev_log_serial
|
576 | 6c2549d6 | Guido Trotter | |
577 | 989a8bee | Michael Hanselmann | def __call__(self, job): |
578 | 989a8bee | Michael Hanselmann | """Checks whether job has changed.
|
579 | 6c2549d6 | Guido Trotter |
|
580 | 989a8bee | Michael Hanselmann | @type job: L{_QueuedJob}
|
581 | 989a8bee | Michael Hanselmann | @param job: Job object
|
582 | 6c2549d6 | Guido Trotter |
|
583 | 6c2549d6 | Guido Trotter | """
|
584 | c0f6d0d8 | Michael Hanselmann | assert not job.writable, "Expected read-only job" |
585 | c0f6d0d8 | Michael Hanselmann | |
586 | 989a8bee | Michael Hanselmann | status = job.CalcStatus() |
587 | dc2879ea | Michael Hanselmann | job_info = self._squery(job)
|
588 | 989a8bee | Michael Hanselmann | log_entries = job.GetLogEntries(self._prev_log_serial)
|
589 | 6c2549d6 | Guido Trotter | |
590 | 6c2549d6 | Guido Trotter | # Serializing and deserializing data can cause type changes (e.g. from
|
591 | 6c2549d6 | Guido Trotter | # tuple to list) or precision loss. We're doing it here so that we get
|
592 | 6c2549d6 | Guido Trotter | # the same modifications as the data received from the client. Without
|
593 | 6c2549d6 | Guido Trotter | # this, the comparison afterwards might fail without the data being
|
594 | 6c2549d6 | Guido Trotter | # significantly different.
|
595 | 6c2549d6 | Guido Trotter | # TODO: we just deserialized from disk, investigate how to make sure that
|
596 | 6c2549d6 | Guido Trotter | # the job info and log entries are compatible to avoid this further step.
|
597 | 989a8bee | Michael Hanselmann | # TODO: Doing something like in testutils.py:UnifyValueType might be more
|
598 | 989a8bee | Michael Hanselmann | # efficient, though floats will be tricky
|
599 | 989a8bee | Michael Hanselmann | job_info = serializer.LoadJson(serializer.DumpJson(job_info)) |
600 | 989a8bee | Michael Hanselmann | log_entries = serializer.LoadJson(serializer.DumpJson(log_entries)) |
601 | 6c2549d6 | Guido Trotter | |
602 | 6c2549d6 | Guido Trotter | # Don't even try to wait if the job is no longer running, there will be
|
603 | 6c2549d6 | Guido Trotter | # no changes.
|
604 | 989a8bee | Michael Hanselmann | if (status not in (constants.JOB_STATUS_QUEUED, |
605 | 989a8bee | Michael Hanselmann | constants.JOB_STATUS_RUNNING, |
606 | 47099cd1 | Michael Hanselmann | constants.JOB_STATUS_WAITING) or
|
607 | 989a8bee | Michael Hanselmann | job_info != self._prev_job_info or |
608 | 989a8bee | Michael Hanselmann | (log_entries and self._prev_log_serial != log_entries[0][0])): |
609 | 989a8bee | Michael Hanselmann | logging.debug("Job %s changed", job.id)
|
610 | 989a8bee | Michael Hanselmann | return (job_info, log_entries)
|
611 | 6c2549d6 | Guido Trotter | |
612 | 989a8bee | Michael Hanselmann | return None |
613 | 989a8bee | Michael Hanselmann | |
614 | 989a8bee | Michael Hanselmann | |
615 | 989a8bee | Michael Hanselmann | class _JobFileChangesWaiter(object): |
616 | 989a8bee | Michael Hanselmann | def __init__(self, filename): |
617 | 989a8bee | Michael Hanselmann | """Initializes this class.
|
618 | 989a8bee | Michael Hanselmann |
|
619 | 989a8bee | Michael Hanselmann | @type filename: string
|
620 | 989a8bee | Michael Hanselmann | @param filename: Path to job file
|
621 | 989a8bee | Michael Hanselmann | @raises errors.InotifyError: if the notifier cannot be setup
|
622 | 6c2549d6 | Guido Trotter |
|
623 | 989a8bee | Michael Hanselmann | """
|
624 | 989a8bee | Michael Hanselmann | self._wm = pyinotify.WatchManager()
|
625 | 989a8bee | Michael Hanselmann | self._inotify_handler = \
|
626 | 989a8bee | Michael Hanselmann | asyncnotifier.SingleFileEventHandler(self._wm, self._OnInotify, filename) |
627 | 989a8bee | Michael Hanselmann | self._notifier = \
|
628 | 989a8bee | Michael Hanselmann | pyinotify.Notifier(self._wm, default_proc_fun=self._inotify_handler) |
629 | 989a8bee | Michael Hanselmann | try:
|
630 | 989a8bee | Michael Hanselmann | self._inotify_handler.enable()
|
631 | 989a8bee | Michael Hanselmann | except Exception: |
632 | 989a8bee | Michael Hanselmann | # pyinotify doesn't close file descriptors automatically
|
633 | 989a8bee | Michael Hanselmann | self._notifier.stop()
|
634 | 989a8bee | Michael Hanselmann | raise
|
635 | 989a8bee | Michael Hanselmann | |
636 | 989a8bee | Michael Hanselmann | def _OnInotify(self, notifier_enabled): |
637 | 989a8bee | Michael Hanselmann | """Callback for inotify.
|
638 | 989a8bee | Michael Hanselmann |
|
639 | 989a8bee | Michael Hanselmann | """
|
640 | 6c2549d6 | Guido Trotter | if not notifier_enabled: |
641 | 989a8bee | Michael Hanselmann | self._inotify_handler.enable()
|
642 | 989a8bee | Michael Hanselmann | |
643 | 989a8bee | Michael Hanselmann | def Wait(self, timeout): |
644 | 989a8bee | Michael Hanselmann | """Waits for the job file to change.
|
645 | 989a8bee | Michael Hanselmann |
|
646 | 989a8bee | Michael Hanselmann | @type timeout: float
|
647 | 989a8bee | Michael Hanselmann | @param timeout: Timeout in seconds
|
648 | 989a8bee | Michael Hanselmann | @return: Whether there have been events
|
649 | 989a8bee | Michael Hanselmann |
|
650 | 989a8bee | Michael Hanselmann | """
|
651 | 989a8bee | Michael Hanselmann | assert timeout >= 0 |
652 | 989a8bee | Michael Hanselmann | have_events = self._notifier.check_events(timeout * 1000) |
653 | 989a8bee | Michael Hanselmann | if have_events:
|
654 | 989a8bee | Michael Hanselmann | self._notifier.read_events()
|
655 | 989a8bee | Michael Hanselmann | self._notifier.process_events()
|
656 | 989a8bee | Michael Hanselmann | return have_events
|
657 | 989a8bee | Michael Hanselmann | |
658 | 989a8bee | Michael Hanselmann | def Close(self): |
659 | 989a8bee | Michael Hanselmann | """Closes underlying notifier and its file descriptor.
|
660 | 989a8bee | Michael Hanselmann |
|
661 | 989a8bee | Michael Hanselmann | """
|
662 | 989a8bee | Michael Hanselmann | self._notifier.stop()
|
663 | 989a8bee | Michael Hanselmann | |
664 | 989a8bee | Michael Hanselmann | |
665 | 989a8bee | Michael Hanselmann | class _JobChangesWaiter(object): |
666 | 989a8bee | Michael Hanselmann | def __init__(self, filename): |
667 | 989a8bee | Michael Hanselmann | """Initializes this class.
|
668 | 989a8bee | Michael Hanselmann |
|
669 | 989a8bee | Michael Hanselmann | @type filename: string
|
670 | 989a8bee | Michael Hanselmann | @param filename: Path to job file
|
671 | 989a8bee | Michael Hanselmann |
|
672 | 989a8bee | Michael Hanselmann | """
|
673 | 989a8bee | Michael Hanselmann | self._filewaiter = None |
674 | 989a8bee | Michael Hanselmann | self._filename = filename
|
675 | 6c2549d6 | Guido Trotter | |
676 | 989a8bee | Michael Hanselmann | def Wait(self, timeout): |
677 | 989a8bee | Michael Hanselmann | """Waits for a job to change.
|
678 | 6c2549d6 | Guido Trotter |
|
679 | 989a8bee | Michael Hanselmann | @type timeout: float
|
680 | 989a8bee | Michael Hanselmann | @param timeout: Timeout in seconds
|
681 | 989a8bee | Michael Hanselmann | @return: Whether there have been events
|
682 | 989a8bee | Michael Hanselmann |
|
683 | 989a8bee | Michael Hanselmann | """
|
684 | 989a8bee | Michael Hanselmann | if self._filewaiter: |
685 | 989a8bee | Michael Hanselmann | return self._filewaiter.Wait(timeout) |
686 | 989a8bee | Michael Hanselmann | |
687 | 989a8bee | Michael Hanselmann | # Lazy setup: Avoid inotify setup cost when job file has already changed.
|
688 | 989a8bee | Michael Hanselmann | # If this point is reached, return immediately and let caller check the job
|
689 | 989a8bee | Michael Hanselmann | # file again in case there were changes since the last check. This avoids a
|
690 | 989a8bee | Michael Hanselmann | # race condition.
|
691 | 989a8bee | Michael Hanselmann | self._filewaiter = _JobFileChangesWaiter(self._filename) |
692 | 989a8bee | Michael Hanselmann | |
693 | 989a8bee | Michael Hanselmann | return True |
694 | 989a8bee | Michael Hanselmann | |
695 | 989a8bee | Michael Hanselmann | def Close(self): |
696 | 989a8bee | Michael Hanselmann | """Closes underlying waiter.
|
697 | 989a8bee | Michael Hanselmann |
|
698 | 989a8bee | Michael Hanselmann | """
|
699 | 989a8bee | Michael Hanselmann | if self._filewaiter: |
700 | 989a8bee | Michael Hanselmann | self._filewaiter.Close()
|
701 | 989a8bee | Michael Hanselmann | |
702 | 989a8bee | Michael Hanselmann | |
703 | 989a8bee | Michael Hanselmann | class _WaitForJobChangesHelper(object): |
704 | 989a8bee | Michael Hanselmann | """Helper class using inotify to wait for changes in a job file.
|
705 | 989a8bee | Michael Hanselmann |
|
706 | 989a8bee | Michael Hanselmann | This class takes a previous job status and serial, and alerts the client when
|
707 | 989a8bee | Michael Hanselmann | the current job status has changed.
|
708 | 989a8bee | Michael Hanselmann |
|
709 | 989a8bee | Michael Hanselmann | """
|
710 | 989a8bee | Michael Hanselmann | @staticmethod
|
711 | dfc8824a | Michael Hanselmann | def _CheckForChanges(counter, job_load_fn, check_fn): |
712 | dfc8824a | Michael Hanselmann | if counter.next() > 0: |
713 | dfc8824a | Michael Hanselmann | # If this isn't the first check the job is given some more time to change
|
714 | dfc8824a | Michael Hanselmann | # again. This gives better performance for jobs generating many
|
715 | dfc8824a | Michael Hanselmann | # changes/messages.
|
716 | dfc8824a | Michael Hanselmann | time.sleep(0.1)
|
717 | dfc8824a | Michael Hanselmann | |
718 | 989a8bee | Michael Hanselmann | job = job_load_fn() |
719 | 989a8bee | Michael Hanselmann | if not job: |
720 | 989a8bee | Michael Hanselmann | raise errors.JobLost()
|
721 | 989a8bee | Michael Hanselmann | |
722 | 989a8bee | Michael Hanselmann | result = check_fn(job) |
723 | 989a8bee | Michael Hanselmann | if result is None: |
724 | 989a8bee | Michael Hanselmann | raise utils.RetryAgain()
|
725 | 989a8bee | Michael Hanselmann | |
726 | 989a8bee | Michael Hanselmann | return result
|
727 | 989a8bee | Michael Hanselmann | |
728 | 989a8bee | Michael Hanselmann | def __call__(self, filename, job_load_fn, |
729 | 989a8bee | Michael Hanselmann | fields, prev_job_info, prev_log_serial, timeout): |
730 | 989a8bee | Michael Hanselmann | """Waits for changes on a job.
|
731 | 989a8bee | Michael Hanselmann |
|
732 | 989a8bee | Michael Hanselmann | @type filename: string
|
733 | 989a8bee | Michael Hanselmann | @param filename: File on which to wait for changes
|
734 | 989a8bee | Michael Hanselmann | @type job_load_fn: callable
|
735 | 989a8bee | Michael Hanselmann | @param job_load_fn: Function to load job
|
736 | 989a8bee | Michael Hanselmann | @type fields: list of strings
|
737 | 989a8bee | Michael Hanselmann | @param fields: Which fields to check for changes
|
738 | 989a8bee | Michael Hanselmann | @type prev_job_info: list or None
|
739 | 989a8bee | Michael Hanselmann | @param prev_job_info: Last job information returned
|
740 | 989a8bee | Michael Hanselmann | @type prev_log_serial: int
|
741 | 989a8bee | Michael Hanselmann | @param prev_log_serial: Last job message serial number
|
742 | 989a8bee | Michael Hanselmann | @type timeout: float
|
743 | 989a8bee | Michael Hanselmann | @param timeout: maximum time to wait in seconds
|
744 | 989a8bee | Michael Hanselmann |
|
745 | 989a8bee | Michael Hanselmann | """
|
746 | dfc8824a | Michael Hanselmann | counter = itertools.count() |
747 | 6c2549d6 | Guido Trotter | try:
|
748 | 989a8bee | Michael Hanselmann | check_fn = _JobChangesChecker(fields, prev_job_info, prev_log_serial) |
749 | 989a8bee | Michael Hanselmann | waiter = _JobChangesWaiter(filename) |
750 | 989a8bee | Michael Hanselmann | try:
|
751 | 989a8bee | Michael Hanselmann | return utils.Retry(compat.partial(self._CheckForChanges, |
752 | dfc8824a | Michael Hanselmann | counter, job_load_fn, check_fn), |
753 | 989a8bee | Michael Hanselmann | utils.RETRY_REMAINING_TIME, timeout, |
754 | 989a8bee | Michael Hanselmann | wait_fn=waiter.Wait) |
755 | 989a8bee | Michael Hanselmann | finally:
|
756 | 989a8bee | Michael Hanselmann | waiter.Close() |
757 | 6c2549d6 | Guido Trotter | except (errors.InotifyError, errors.JobLost):
|
758 | 6c2549d6 | Guido Trotter | return None |
759 | 6c2549d6 | Guido Trotter | except utils.RetryTimeout:
|
760 | 6c2549d6 | Guido Trotter | return constants.JOB_NOTCHANGED
|
761 | 6c2549d6 | Guido Trotter | |
762 | 6c2549d6 | Guido Trotter | |
763 | 6760e4ed | Michael Hanselmann | def _EncodeOpError(err): |
764 | 6760e4ed | Michael Hanselmann | """Encodes an error which occurred while processing an opcode.
|
765 | 6760e4ed | Michael Hanselmann |
|
766 | 6760e4ed | Michael Hanselmann | """
|
767 | 6760e4ed | Michael Hanselmann | if isinstance(err, errors.GenericError): |
768 | 6760e4ed | Michael Hanselmann | to_encode = err |
769 | 6760e4ed | Michael Hanselmann | else:
|
770 | 6760e4ed | Michael Hanselmann | to_encode = errors.OpExecError(str(err))
|
771 | 6760e4ed | Michael Hanselmann | |
772 | 6760e4ed | Michael Hanselmann | return errors.EncodeException(to_encode)
|
773 | 6760e4ed | Michael Hanselmann | |
774 | 6760e4ed | Michael Hanselmann | |
775 | 26d3fd2f | Michael Hanselmann | class _TimeoutStrategyWrapper: |
776 | 26d3fd2f | Michael Hanselmann | def __init__(self, fn): |
777 | 26d3fd2f | Michael Hanselmann | """Initializes this class.
|
778 | 26d3fd2f | Michael Hanselmann |
|
779 | 26d3fd2f | Michael Hanselmann | """
|
780 | 26d3fd2f | Michael Hanselmann | self._fn = fn
|
781 | 26d3fd2f | Michael Hanselmann | self._next = None |
782 | 26d3fd2f | Michael Hanselmann | |
783 | 26d3fd2f | Michael Hanselmann | def _Advance(self): |
784 | 26d3fd2f | Michael Hanselmann | """Gets the next timeout if necessary.
|
785 | 26d3fd2f | Michael Hanselmann |
|
786 | 26d3fd2f | Michael Hanselmann | """
|
787 | 26d3fd2f | Michael Hanselmann | if self._next is None: |
788 | 26d3fd2f | Michael Hanselmann | self._next = self._fn() |
789 | 26d3fd2f | Michael Hanselmann | |
790 | 26d3fd2f | Michael Hanselmann | def Peek(self): |
791 | 26d3fd2f | Michael Hanselmann | """Returns the next timeout.
|
792 | 26d3fd2f | Michael Hanselmann |
|
793 | 26d3fd2f | Michael Hanselmann | """
|
794 | 26d3fd2f | Michael Hanselmann | self._Advance()
|
795 | 26d3fd2f | Michael Hanselmann | return self._next |
796 | 26d3fd2f | Michael Hanselmann | |
797 | 26d3fd2f | Michael Hanselmann | def Next(self): |
798 | 26d3fd2f | Michael Hanselmann | """Returns the current timeout and advances the internal state.
|
799 | 26d3fd2f | Michael Hanselmann |
|
800 | 26d3fd2f | Michael Hanselmann | """
|
801 | 26d3fd2f | Michael Hanselmann | self._Advance()
|
802 | 26d3fd2f | Michael Hanselmann | result = self._next
|
803 | 26d3fd2f | Michael Hanselmann | self._next = None |
804 | 26d3fd2f | Michael Hanselmann | return result
|
805 | 26d3fd2f | Michael Hanselmann | |
806 | 26d3fd2f | Michael Hanselmann | |
807 | b80cc518 | Michael Hanselmann | class _OpExecContext: |
808 | 26d3fd2f | Michael Hanselmann | def __init__(self, op, index, log_prefix, timeout_strategy_factory): |
809 | b80cc518 | Michael Hanselmann | """Initializes this class.
|
810 | b80cc518 | Michael Hanselmann |
|
811 | b80cc518 | Michael Hanselmann | """
|
812 | b80cc518 | Michael Hanselmann | self.op = op
|
813 | b80cc518 | Michael Hanselmann | self.index = index
|
814 | b80cc518 | Michael Hanselmann | self.log_prefix = log_prefix
|
815 | b80cc518 | Michael Hanselmann | self.summary = op.input.Summary()
|
816 | b80cc518 | Michael Hanselmann | |
817 | b95479a5 | Michael Hanselmann | # Create local copy to modify
|
818 | b95479a5 | Michael Hanselmann | if getattr(op.input, opcodes.DEPEND_ATTR, None): |
819 | b95479a5 | Michael Hanselmann | self.jobdeps = op.input.depends[:]
|
820 | b95479a5 | Michael Hanselmann | else:
|
821 | b95479a5 | Michael Hanselmann | self.jobdeps = None |
822 | b95479a5 | Michael Hanselmann | |
823 | 26d3fd2f | Michael Hanselmann | self._timeout_strategy_factory = timeout_strategy_factory
|
824 | 26d3fd2f | Michael Hanselmann | self._ResetTimeoutStrategy()
|
825 | 26d3fd2f | Michael Hanselmann | |
826 | 26d3fd2f | Michael Hanselmann | def _ResetTimeoutStrategy(self): |
827 | 26d3fd2f | Michael Hanselmann | """Creates a new timeout strategy.
|
828 | 26d3fd2f | Michael Hanselmann |
|
829 | 26d3fd2f | Michael Hanselmann | """
|
830 | 26d3fd2f | Michael Hanselmann | self._timeout_strategy = \
|
831 | 26d3fd2f | Michael Hanselmann | _TimeoutStrategyWrapper(self._timeout_strategy_factory().NextAttempt)
|
832 | 26d3fd2f | Michael Hanselmann | |
833 | 26d3fd2f | Michael Hanselmann | def CheckPriorityIncrease(self): |
834 | 26d3fd2f | Michael Hanselmann | """Checks whether priority can and should be increased.
|
835 | 26d3fd2f | Michael Hanselmann |
|
836 | 26d3fd2f | Michael Hanselmann | Called when locks couldn't be acquired.
|
837 | 26d3fd2f | Michael Hanselmann |
|
838 | 26d3fd2f | Michael Hanselmann | """
|
839 | 26d3fd2f | Michael Hanselmann | op = self.op
|
840 | 26d3fd2f | Michael Hanselmann | |
841 | 26d3fd2f | Michael Hanselmann | # Exhausted all retries and next round should not use blocking acquire
|
842 | 26d3fd2f | Michael Hanselmann | # for locks?
|
843 | 26d3fd2f | Michael Hanselmann | if (self._timeout_strategy.Peek() is None and |
844 | 26d3fd2f | Michael Hanselmann | op.priority > constants.OP_PRIO_HIGHEST): |
845 | 26d3fd2f | Michael Hanselmann | logging.debug("Increasing priority")
|
846 | 26d3fd2f | Michael Hanselmann | op.priority -= 1
|
847 | 26d3fd2f | Michael Hanselmann | self._ResetTimeoutStrategy()
|
848 | 26d3fd2f | Michael Hanselmann | return True |
849 | 26d3fd2f | Michael Hanselmann | |
850 | 26d3fd2f | Michael Hanselmann | return False |
851 | 26d3fd2f | Michael Hanselmann | |
852 | 26d3fd2f | Michael Hanselmann | def GetNextLockTimeout(self): |
853 | 26d3fd2f | Michael Hanselmann | """Returns the next lock acquire timeout.
|
854 | 26d3fd2f | Michael Hanselmann |
|
855 | 26d3fd2f | Michael Hanselmann | """
|
856 | 26d3fd2f | Michael Hanselmann | return self._timeout_strategy.Next() |
857 | 26d3fd2f | Michael Hanselmann | |
858 | b80cc518 | Michael Hanselmann | |
859 | be760ba8 | Michael Hanselmann | class _JobProcessor(object): |
860 | 75d81fc8 | Michael Hanselmann | (DEFER, |
861 | 75d81fc8 | Michael Hanselmann | WAITDEP, |
862 | 75d81fc8 | Michael Hanselmann | FINISHED) = range(1, 4) |
863 | 75d81fc8 | Michael Hanselmann | |
864 | 26d3fd2f | Michael Hanselmann | def __init__(self, queue, opexec_fn, job, |
865 | 26d3fd2f | Michael Hanselmann | _timeout_strategy_factory=mcpu.LockAttemptTimeoutStrategy): |
866 | be760ba8 | Michael Hanselmann | """Initializes this class.
|
867 | be760ba8 | Michael Hanselmann |
|
868 | be760ba8 | Michael Hanselmann | """
|
869 | be760ba8 | Michael Hanselmann | self.queue = queue
|
870 | be760ba8 | Michael Hanselmann | self.opexec_fn = opexec_fn
|
871 | be760ba8 | Michael Hanselmann | self.job = job
|
872 | 26d3fd2f | Michael Hanselmann | self._timeout_strategy_factory = _timeout_strategy_factory
|
873 | be760ba8 | Michael Hanselmann | |
874 | be760ba8 | Michael Hanselmann | @staticmethod
|
875 | 26d3fd2f | Michael Hanselmann | def _FindNextOpcode(job, timeout_strategy_factory): |
876 | be760ba8 | Michael Hanselmann | """Locates the next opcode to run.
|
877 | be760ba8 | Michael Hanselmann |
|
878 | be760ba8 | Michael Hanselmann | @type job: L{_QueuedJob}
|
879 | be760ba8 | Michael Hanselmann | @param job: Job object
|
880 | 26d3fd2f | Michael Hanselmann | @param timeout_strategy_factory: Callable to create new timeout strategy
|
881 | be760ba8 | Michael Hanselmann |
|
882 | be760ba8 | Michael Hanselmann | """
|
883 | be760ba8 | Michael Hanselmann | # Create some sort of a cache to speed up locating next opcode for future
|
884 | be760ba8 | Michael Hanselmann | # lookups
|
885 | be760ba8 | Michael Hanselmann | # TODO: Consider splitting _QueuedJob.ops into two separate lists, one for
|
886 | be760ba8 | Michael Hanselmann | # pending and one for processed ops.
|
887 | 03b63608 | Michael Hanselmann | if job.ops_iter is None: |
888 | 03b63608 | Michael Hanselmann | job.ops_iter = enumerate(job.ops)
|
889 | be760ba8 | Michael Hanselmann | |
890 | be760ba8 | Michael Hanselmann | # Find next opcode to run
|
891 | be760ba8 | Michael Hanselmann | while True: |
892 | be760ba8 | Michael Hanselmann | try:
|
893 | 03b63608 | Michael Hanselmann | (idx, op) = job.ops_iter.next() |
894 | be760ba8 | Michael Hanselmann | except StopIteration: |
895 | be760ba8 | Michael Hanselmann | raise errors.ProgrammerError("Called for a finished job") |
896 | be760ba8 | Michael Hanselmann | |
897 | be760ba8 | Michael Hanselmann | if op.status == constants.OP_STATUS_RUNNING:
|
898 | be760ba8 | Michael Hanselmann | # Found an opcode already marked as running
|
899 | be760ba8 | Michael Hanselmann | raise errors.ProgrammerError("Called for job marked as running") |
900 | be760ba8 | Michael Hanselmann | |
901 | 26d3fd2f | Michael Hanselmann | opctx = _OpExecContext(op, idx, "Op %s/%s" % (idx + 1, len(job.ops)), |
902 | 26d3fd2f | Michael Hanselmann | timeout_strategy_factory) |
903 | be760ba8 | Michael Hanselmann | |
904 | 66bd7445 | Michael Hanselmann | if op.status not in constants.OPS_FINALIZED: |
905 | 66bd7445 | Michael Hanselmann | return opctx
|
906 | be760ba8 | Michael Hanselmann | |
907 | 66bd7445 | Michael Hanselmann | # This is a job that was partially completed before master daemon
|
908 | 66bd7445 | Michael Hanselmann | # shutdown, so it can be expected that some opcodes are already
|
909 | 66bd7445 | Michael Hanselmann | # completed successfully (if any did error out, then the whole job
|
910 | 66bd7445 | Michael Hanselmann | # should have been aborted and not resubmitted for processing).
|
911 | 66bd7445 | Michael Hanselmann | logging.info("%s: opcode %s already processed, skipping",
|
912 | 66bd7445 | Michael Hanselmann | opctx.log_prefix, opctx.summary) |
913 | be760ba8 | Michael Hanselmann | |
914 | be760ba8 | Michael Hanselmann | @staticmethod
|
915 | be760ba8 | Michael Hanselmann | def _MarkWaitlock(job, op): |
916 | be760ba8 | Michael Hanselmann | """Marks an opcode as waiting for locks.
|
917 | be760ba8 | Michael Hanselmann |
|
918 | be760ba8 | Michael Hanselmann | The job's start timestamp is also set if necessary.
|
919 | be760ba8 | Michael Hanselmann |
|
920 | be760ba8 | Michael Hanselmann | @type job: L{_QueuedJob}
|
921 | be760ba8 | Michael Hanselmann | @param job: Job object
|
922 | a38e8674 | Michael Hanselmann | @type op: L{_QueuedOpCode}
|
923 | a38e8674 | Michael Hanselmann | @param op: Opcode object
|
924 | be760ba8 | Michael Hanselmann |
|
925 | be760ba8 | Michael Hanselmann | """
|
926 | be760ba8 | Michael Hanselmann | assert op in job.ops |
927 | 5fd6b694 | Michael Hanselmann | assert op.status in (constants.OP_STATUS_QUEUED, |
928 | 47099cd1 | Michael Hanselmann | constants.OP_STATUS_WAITING) |
929 | 5fd6b694 | Michael Hanselmann | |
930 | 5fd6b694 | Michael Hanselmann | update = False
|
931 | be760ba8 | Michael Hanselmann | |
932 | be760ba8 | Michael Hanselmann | op.result = None
|
933 | 5fd6b694 | Michael Hanselmann | |
934 | 5fd6b694 | Michael Hanselmann | if op.status == constants.OP_STATUS_QUEUED:
|
935 | 47099cd1 | Michael Hanselmann | op.status = constants.OP_STATUS_WAITING |
936 | 5fd6b694 | Michael Hanselmann | update = True
|
937 | 5fd6b694 | Michael Hanselmann | |
938 | 5fd6b694 | Michael Hanselmann | if op.start_timestamp is None: |
939 | 5fd6b694 | Michael Hanselmann | op.start_timestamp = TimeStampNow() |
940 | 5fd6b694 | Michael Hanselmann | update = True
|
941 | be760ba8 | Michael Hanselmann | |
942 | be760ba8 | Michael Hanselmann | if job.start_timestamp is None: |
943 | be760ba8 | Michael Hanselmann | job.start_timestamp = op.start_timestamp |
944 | 5fd6b694 | Michael Hanselmann | update = True
|
945 | 5fd6b694 | Michael Hanselmann | |
946 | 47099cd1 | Michael Hanselmann | assert op.status == constants.OP_STATUS_WAITING
|
947 | 5fd6b694 | Michael Hanselmann | |
948 | 5fd6b694 | Michael Hanselmann | return update
|
949 | be760ba8 | Michael Hanselmann | |
950 | b95479a5 | Michael Hanselmann | @staticmethod
|
951 | b95479a5 | Michael Hanselmann | def _CheckDependencies(queue, job, opctx): |
952 | b95479a5 | Michael Hanselmann | """Checks if an opcode has dependencies and if so, processes them.
|
953 | b95479a5 | Michael Hanselmann |
|
954 | b95479a5 | Michael Hanselmann | @type queue: L{JobQueue}
|
955 | b95479a5 | Michael Hanselmann | @param queue: Queue object
|
956 | b95479a5 | Michael Hanselmann | @type job: L{_QueuedJob}
|
957 | b95479a5 | Michael Hanselmann | @param job: Job object
|
958 | b95479a5 | Michael Hanselmann | @type opctx: L{_OpExecContext}
|
959 | b95479a5 | Michael Hanselmann | @param opctx: Opcode execution context
|
960 | b95479a5 | Michael Hanselmann | @rtype: bool
|
961 | b95479a5 | Michael Hanselmann | @return: Whether opcode will be re-scheduled by dependency tracker
|
962 | b95479a5 | Michael Hanselmann |
|
963 | b95479a5 | Michael Hanselmann | """
|
964 | b95479a5 | Michael Hanselmann | op = opctx.op |
965 | b95479a5 | Michael Hanselmann | |
966 | b95479a5 | Michael Hanselmann | result = False
|
967 | b95479a5 | Michael Hanselmann | |
968 | b95479a5 | Michael Hanselmann | while opctx.jobdeps:
|
969 | b95479a5 | Michael Hanselmann | (dep_job_id, dep_status) = opctx.jobdeps[0]
|
970 | b95479a5 | Michael Hanselmann | |
971 | b95479a5 | Michael Hanselmann | (depresult, depmsg) = queue.depmgr.CheckAndRegister(job, dep_job_id, |
972 | b95479a5 | Michael Hanselmann | dep_status) |
973 | b95479a5 | Michael Hanselmann | assert ht.TNonEmptyString(depmsg), "No dependency message" |
974 | b95479a5 | Michael Hanselmann | |
975 | b95479a5 | Michael Hanselmann | logging.info("%s: %s", opctx.log_prefix, depmsg)
|
976 | b95479a5 | Michael Hanselmann | |
977 | b95479a5 | Michael Hanselmann | if depresult == _JobDependencyManager.CONTINUE:
|
978 | b95479a5 | Michael Hanselmann | # Remove dependency and continue
|
979 | b95479a5 | Michael Hanselmann | opctx.jobdeps.pop(0)
|
980 | b95479a5 | Michael Hanselmann | |
981 | b95479a5 | Michael Hanselmann | elif depresult == _JobDependencyManager.WAIT:
|
982 | b95479a5 | Michael Hanselmann | # Need to wait for notification, dependency tracker will re-add job
|
983 | b95479a5 | Michael Hanselmann | # to workerpool
|
984 | b95479a5 | Michael Hanselmann | result = True
|
985 | b95479a5 | Michael Hanselmann | break
|
986 | b95479a5 | Michael Hanselmann | |
987 | b95479a5 | Michael Hanselmann | elif depresult == _JobDependencyManager.CANCEL:
|
988 | b95479a5 | Michael Hanselmann | # Job was cancelled, cancel this job as well
|
989 | b95479a5 | Michael Hanselmann | job.Cancel() |
990 | b95479a5 | Michael Hanselmann | assert op.status == constants.OP_STATUS_CANCELING
|
991 | b95479a5 | Michael Hanselmann | break
|
992 | b95479a5 | Michael Hanselmann | |
993 | b95479a5 | Michael Hanselmann | elif depresult in (_JobDependencyManager.WRONGSTATUS, |
994 | b95479a5 | Michael Hanselmann | _JobDependencyManager.ERROR): |
995 | b95479a5 | Michael Hanselmann | # Job failed or there was an error, this job must fail
|
996 | b95479a5 | Michael Hanselmann | op.status = constants.OP_STATUS_ERROR |
997 | b95479a5 | Michael Hanselmann | op.result = _EncodeOpError(errors.OpExecError(depmsg)) |
998 | b95479a5 | Michael Hanselmann | break
|
999 | b95479a5 | Michael Hanselmann | |
1000 | b95479a5 | Michael Hanselmann | else:
|
1001 | b95479a5 | Michael Hanselmann | raise errors.ProgrammerError("Unknown dependency result '%s'" % |
1002 | b95479a5 | Michael Hanselmann | depresult) |
1003 | b95479a5 | Michael Hanselmann | |
1004 | b95479a5 | Michael Hanselmann | return result
|
1005 | b95479a5 | Michael Hanselmann | |
1006 | b80cc518 | Michael Hanselmann | def _ExecOpCodeUnlocked(self, opctx): |
1007 | be760ba8 | Michael Hanselmann | """Processes one opcode and returns the result.
|
1008 | be760ba8 | Michael Hanselmann |
|
1009 | be760ba8 | Michael Hanselmann | """
|
1010 | b80cc518 | Michael Hanselmann | op = opctx.op |
1011 | b80cc518 | Michael Hanselmann | |
1012 | 47099cd1 | Michael Hanselmann | assert op.status == constants.OP_STATUS_WAITING
|
1013 | be760ba8 | Michael Hanselmann | |
1014 | 26d3fd2f | Michael Hanselmann | timeout = opctx.GetNextLockTimeout() |
1015 | 26d3fd2f | Michael Hanselmann | |
1016 | be760ba8 | Michael Hanselmann | try:
|
1017 | be760ba8 | Michael Hanselmann | # Make sure not to hold queue lock while calling ExecOpCode
|
1018 | be760ba8 | Michael Hanselmann | result = self.opexec_fn(op.input,
|
1019 | 26d3fd2f | Michael Hanselmann | _OpExecCallbacks(self.queue, self.job, op), |
1020 | f23db633 | Michael Hanselmann | timeout=timeout, priority=op.priority) |
1021 | 26d3fd2f | Michael Hanselmann | except mcpu.LockAcquireTimeout:
|
1022 | 26d3fd2f | Michael Hanselmann | assert timeout is not None, "Received timeout for blocking acquire" |
1023 | 26d3fd2f | Michael Hanselmann | logging.debug("Couldn't acquire locks in %0.6fs", timeout)
|
1024 | 9e49dfc5 | Michael Hanselmann | |
1025 | 47099cd1 | Michael Hanselmann | assert op.status in (constants.OP_STATUS_WAITING, |
1026 | 9e49dfc5 | Michael Hanselmann | constants.OP_STATUS_CANCELING) |
1027 | 9e49dfc5 | Michael Hanselmann | |
1028 | 9e49dfc5 | Michael Hanselmann | # Was job cancelled while we were waiting for the lock?
|
1029 | 9e49dfc5 | Michael Hanselmann | if op.status == constants.OP_STATUS_CANCELING:
|
1030 | 9e49dfc5 | Michael Hanselmann | return (constants.OP_STATUS_CANCELING, None) |
1031 | 9e49dfc5 | Michael Hanselmann | |
1032 | 5fd6b694 | Michael Hanselmann | # Stay in waitlock while trying to re-acquire lock
|
1033 | 47099cd1 | Michael Hanselmann | return (constants.OP_STATUS_WAITING, None) |
1034 | be760ba8 | Michael Hanselmann | except CancelJob:
|
1035 | b80cc518 | Michael Hanselmann | logging.exception("%s: Canceling job", opctx.log_prefix)
|
1036 | be760ba8 | Michael Hanselmann | assert op.status == constants.OP_STATUS_CANCELING
|
1037 | be760ba8 | Michael Hanselmann | return (constants.OP_STATUS_CANCELING, None) |
1038 | b459a848 | Andrea Spadaccini | except Exception, err: # pylint: disable=W0703 |
1039 | b80cc518 | Michael Hanselmann | logging.exception("%s: Caught exception in %s",
|
1040 | b80cc518 | Michael Hanselmann | opctx.log_prefix, opctx.summary) |
1041 | be760ba8 | Michael Hanselmann | return (constants.OP_STATUS_ERROR, _EncodeOpError(err))
|
1042 | be760ba8 | Michael Hanselmann | else:
|
1043 | b80cc518 | Michael Hanselmann | logging.debug("%s: %s successful",
|
1044 | b80cc518 | Michael Hanselmann | opctx.log_prefix, opctx.summary) |
1045 | be760ba8 | Michael Hanselmann | return (constants.OP_STATUS_SUCCESS, result)
|
1046 | be760ba8 | Michael Hanselmann | |
1047 | 26d3fd2f | Michael Hanselmann | def __call__(self, _nextop_fn=None): |
1048 | be760ba8 | Michael Hanselmann | """Continues execution of a job.
|
1049 | be760ba8 | Michael Hanselmann |
|
1050 | 26d3fd2f | Michael Hanselmann | @param _nextop_fn: Callback function for tests
|
1051 | 75d81fc8 | Michael Hanselmann | @return: C{FINISHED} if job is fully processed, C{DEFER} if the job should
|
1052 | 75d81fc8 | Michael Hanselmann | be deferred and C{WAITDEP} if the dependency manager
|
1053 | 75d81fc8 | Michael Hanselmann | (L{_JobDependencyManager}) will re-schedule the job when appropriate
|
1054 | be760ba8 | Michael Hanselmann |
|
1055 | be760ba8 | Michael Hanselmann | """
|
1056 | be760ba8 | Michael Hanselmann | queue = self.queue
|
1057 | be760ba8 | Michael Hanselmann | job = self.job
|
1058 | be760ba8 | Michael Hanselmann | |
1059 | be760ba8 | Michael Hanselmann | logging.debug("Processing job %s", job.id)
|
1060 | be760ba8 | Michael Hanselmann | |
1061 | be760ba8 | Michael Hanselmann | queue.acquire(shared=1)
|
1062 | be760ba8 | Michael Hanselmann | try:
|
1063 | be760ba8 | Michael Hanselmann | opcount = len(job.ops)
|
1064 | be760ba8 | Michael Hanselmann | |
1065 | c0f6d0d8 | Michael Hanselmann | assert job.writable, "Expected writable job" |
1066 | c0f6d0d8 | Michael Hanselmann | |
1067 | 66bd7445 | Michael Hanselmann | # Don't do anything for finalized jobs
|
1068 | 66bd7445 | Michael Hanselmann | if job.CalcStatus() in constants.JOBS_FINALIZED: |
1069 | 75d81fc8 | Michael Hanselmann | return self.FINISHED |
1070 | 66bd7445 | Michael Hanselmann | |
1071 | 26d3fd2f | Michael Hanselmann | # Is a previous opcode still pending?
|
1072 | 26d3fd2f | Michael Hanselmann | if job.cur_opctx:
|
1073 | 26d3fd2f | Michael Hanselmann | opctx = job.cur_opctx |
1074 | 5fd6b694 | Michael Hanselmann | job.cur_opctx = None
|
1075 | 26d3fd2f | Michael Hanselmann | else:
|
1076 | 26d3fd2f | Michael Hanselmann | if __debug__ and _nextop_fn: |
1077 | 26d3fd2f | Michael Hanselmann | _nextop_fn() |
1078 | 26d3fd2f | Michael Hanselmann | opctx = self._FindNextOpcode(job, self._timeout_strategy_factory) |
1079 | 26d3fd2f | Michael Hanselmann | |
1080 | b80cc518 | Michael Hanselmann | op = opctx.op |
1081 | be760ba8 | Michael Hanselmann | |
1082 | be760ba8 | Michael Hanselmann | # Consistency check
|
1083 | be760ba8 | Michael Hanselmann | assert compat.all(i.status in (constants.OP_STATUS_QUEUED, |
1084 | 66bd7445 | Michael Hanselmann | constants.OP_STATUS_CANCELING) |
1085 | 5fd6b694 | Michael Hanselmann | for i in job.ops[opctx.index + 1:]) |
1086 | be760ba8 | Michael Hanselmann | |
1087 | be760ba8 | Michael Hanselmann | assert op.status in (constants.OP_STATUS_QUEUED, |
1088 | 47099cd1 | Michael Hanselmann | constants.OP_STATUS_WAITING, |
1089 | 66bd7445 | Michael Hanselmann | constants.OP_STATUS_CANCELING) |
1090 | be760ba8 | Michael Hanselmann | |
1091 | 26d3fd2f | Michael Hanselmann | assert (op.priority <= constants.OP_PRIO_LOWEST and |
1092 | 26d3fd2f | Michael Hanselmann | op.priority >= constants.OP_PRIO_HIGHEST) |
1093 | 26d3fd2f | Michael Hanselmann | |
1094 | b95479a5 | Michael Hanselmann | waitjob = None
|
1095 | b95479a5 | Michael Hanselmann | |
1096 | 66bd7445 | Michael Hanselmann | if op.status != constants.OP_STATUS_CANCELING:
|
1097 | 30c945d0 | Michael Hanselmann | assert op.status in (constants.OP_STATUS_QUEUED, |
1098 | 47099cd1 | Michael Hanselmann | constants.OP_STATUS_WAITING) |
1099 | 30c945d0 | Michael Hanselmann | |
1100 | be760ba8 | Michael Hanselmann | # Prepare to start opcode
|
1101 | 5fd6b694 | Michael Hanselmann | if self._MarkWaitlock(job, op): |
1102 | 5fd6b694 | Michael Hanselmann | # Write to disk
|
1103 | 5fd6b694 | Michael Hanselmann | queue.UpdateJobUnlocked(job) |
1104 | be760ba8 | Michael Hanselmann | |
1105 | 47099cd1 | Michael Hanselmann | assert op.status == constants.OP_STATUS_WAITING
|
1106 | 47099cd1 | Michael Hanselmann | assert job.CalcStatus() == constants.JOB_STATUS_WAITING
|
1107 | 5fd6b694 | Michael Hanselmann | assert job.start_timestamp and op.start_timestamp |
1108 | b95479a5 | Michael Hanselmann | assert waitjob is None |
1109 | b95479a5 | Michael Hanselmann | |
1110 | b95479a5 | Michael Hanselmann | # Check if waiting for a job is necessary
|
1111 | b95479a5 | Michael Hanselmann | waitjob = self._CheckDependencies(queue, job, opctx)
|
1112 | be760ba8 | Michael Hanselmann | |
1113 | 47099cd1 | Michael Hanselmann | assert op.status in (constants.OP_STATUS_WAITING, |
1114 | b95479a5 | Michael Hanselmann | constants.OP_STATUS_CANCELING, |
1115 | b95479a5 | Michael Hanselmann | constants.OP_STATUS_ERROR) |
1116 | be760ba8 | Michael Hanselmann | |
1117 | b95479a5 | Michael Hanselmann | if not (waitjob or op.status in (constants.OP_STATUS_CANCELING, |
1118 | b95479a5 | Michael Hanselmann | constants.OP_STATUS_ERROR)): |
1119 | b95479a5 | Michael Hanselmann | logging.info("%s: opcode %s waiting for locks",
|
1120 | b95479a5 | Michael Hanselmann | opctx.log_prefix, opctx.summary) |
1121 | be760ba8 | Michael Hanselmann | |
1122 | b95479a5 | Michael Hanselmann | assert not opctx.jobdeps, "Not all dependencies were removed" |
1123 | b95479a5 | Michael Hanselmann | |
1124 | b95479a5 | Michael Hanselmann | queue.release() |
1125 | b95479a5 | Michael Hanselmann | try:
|
1126 | b95479a5 | Michael Hanselmann | (op_status, op_result) = self._ExecOpCodeUnlocked(opctx)
|
1127 | b95479a5 | Michael Hanselmann | finally:
|
1128 | b95479a5 | Michael Hanselmann | queue.acquire(shared=1)
|
1129 | b95479a5 | Michael Hanselmann | |
1130 | b95479a5 | Michael Hanselmann | op.status = op_status |
1131 | b95479a5 | Michael Hanselmann | op.result = op_result |
1132 | b95479a5 | Michael Hanselmann | |
1133 | b95479a5 | Michael Hanselmann | assert not waitjob |
1134 | be760ba8 | Michael Hanselmann | |
1135 | 47099cd1 | Michael Hanselmann | if op.status == constants.OP_STATUS_WAITING:
|
1136 | 26d3fd2f | Michael Hanselmann | # Couldn't get locks in time
|
1137 | 26d3fd2f | Michael Hanselmann | assert not op.end_timestamp |
1138 | be760ba8 | Michael Hanselmann | else:
|
1139 | 26d3fd2f | Michael Hanselmann | # Finalize opcode
|
1140 | 26d3fd2f | Michael Hanselmann | op.end_timestamp = TimeStampNow() |
1141 | be760ba8 | Michael Hanselmann | |
1142 | 26d3fd2f | Michael Hanselmann | if op.status == constants.OP_STATUS_CANCELING:
|
1143 | 26d3fd2f | Michael Hanselmann | assert not compat.any(i.status != constants.OP_STATUS_CANCELING |
1144 | 26d3fd2f | Michael Hanselmann | for i in job.ops[opctx.index:]) |
1145 | 26d3fd2f | Michael Hanselmann | else:
|
1146 | 26d3fd2f | Michael Hanselmann | assert op.status in constants.OPS_FINALIZED |
1147 | be760ba8 | Michael Hanselmann | |
1148 | 47099cd1 | Michael Hanselmann | if op.status == constants.OP_STATUS_WAITING or waitjob: |
1149 | be760ba8 | Michael Hanselmann | finalize = False
|
1150 | be760ba8 | Michael Hanselmann | |
1151 | b95479a5 | Michael Hanselmann | if not waitjob and opctx.CheckPriorityIncrease(): |
1152 | 5fd6b694 | Michael Hanselmann | # Priority was changed, need to update on-disk file
|
1153 | 5fd6b694 | Michael Hanselmann | queue.UpdateJobUnlocked(job) |
1154 | be760ba8 | Michael Hanselmann | |
1155 | 26d3fd2f | Michael Hanselmann | # Keep around for another round
|
1156 | 26d3fd2f | Michael Hanselmann | job.cur_opctx = opctx |
1157 | be760ba8 | Michael Hanselmann | |
1158 | 26d3fd2f | Michael Hanselmann | assert (op.priority <= constants.OP_PRIO_LOWEST and |
1159 | 26d3fd2f | Michael Hanselmann | op.priority >= constants.OP_PRIO_HIGHEST) |
1160 | be760ba8 | Michael Hanselmann | |
1161 | 26d3fd2f | Michael Hanselmann | # In no case must the status be finalized here
|
1162 | 47099cd1 | Michael Hanselmann | assert job.CalcStatus() == constants.JOB_STATUS_WAITING
|
1163 | be760ba8 | Michael Hanselmann | |
1164 | be760ba8 | Michael Hanselmann | else:
|
1165 | 26d3fd2f | Michael Hanselmann | # Ensure all opcodes so far have been successful
|
1166 | 26d3fd2f | Michael Hanselmann | assert (opctx.index == 0 or |
1167 | 26d3fd2f | Michael Hanselmann | compat.all(i.status == constants.OP_STATUS_SUCCESS |
1168 | 26d3fd2f | Michael Hanselmann | for i in job.ops[:opctx.index])) |
1169 | 26d3fd2f | Michael Hanselmann | |
1170 | 26d3fd2f | Michael Hanselmann | # Reset context
|
1171 | 26d3fd2f | Michael Hanselmann | job.cur_opctx = None
|
1172 | 26d3fd2f | Michael Hanselmann | |
1173 | 26d3fd2f | Michael Hanselmann | if op.status == constants.OP_STATUS_SUCCESS:
|
1174 | 26d3fd2f | Michael Hanselmann | finalize = False
|
1175 | 26d3fd2f | Michael Hanselmann | |
1176 | 26d3fd2f | Michael Hanselmann | elif op.status == constants.OP_STATUS_ERROR:
|
1177 | 26d3fd2f | Michael Hanselmann | # Ensure failed opcode has an exception as its result
|
1178 | 26d3fd2f | Michael Hanselmann | assert errors.GetEncodedError(job.ops[opctx.index].result)
|
1179 | 26d3fd2f | Michael Hanselmann | |
1180 | 26d3fd2f | Michael Hanselmann | to_encode = errors.OpExecError("Preceding opcode failed")
|
1181 | 26d3fd2f | Michael Hanselmann | job.MarkUnfinishedOps(constants.OP_STATUS_ERROR, |
1182 | 26d3fd2f | Michael Hanselmann | _EncodeOpError(to_encode)) |
1183 | 26d3fd2f | Michael Hanselmann | finalize = True
|
1184 | be760ba8 | Michael Hanselmann | |
1185 | 26d3fd2f | Michael Hanselmann | # Consistency check
|
1186 | 26d3fd2f | Michael Hanselmann | assert compat.all(i.status == constants.OP_STATUS_ERROR and |
1187 | 26d3fd2f | Michael Hanselmann | errors.GetEncodedError(i.result) |
1188 | 26d3fd2f | Michael Hanselmann | for i in job.ops[opctx.index:]) |
1189 | be760ba8 | Michael Hanselmann | |
1190 | 26d3fd2f | Michael Hanselmann | elif op.status == constants.OP_STATUS_CANCELING:
|
1191 | 26d3fd2f | Michael Hanselmann | job.MarkUnfinishedOps(constants.OP_STATUS_CANCELED, |
1192 | 26d3fd2f | Michael Hanselmann | "Job canceled by request")
|
1193 | 26d3fd2f | Michael Hanselmann | finalize = True
|
1194 | 26d3fd2f | Michael Hanselmann | |
1195 | 26d3fd2f | Michael Hanselmann | else:
|
1196 | 26d3fd2f | Michael Hanselmann | raise errors.ProgrammerError("Unknown status '%s'" % op.status) |
1197 | 26d3fd2f | Michael Hanselmann | |
1198 | 66bd7445 | Michael Hanselmann | if opctx.index == (opcount - 1): |
1199 | 66bd7445 | Michael Hanselmann | # Finalize on last opcode
|
1200 | 66bd7445 | Michael Hanselmann | finalize = True
|
1201 | 66bd7445 | Michael Hanselmann | |
1202 | 66bd7445 | Michael Hanselmann | if finalize:
|
1203 | 26d3fd2f | Michael Hanselmann | # All opcodes have been run, finalize job
|
1204 | 66bd7445 | Michael Hanselmann | job.Finalize() |
1205 | 26d3fd2f | Michael Hanselmann | |
1206 | 26d3fd2f | Michael Hanselmann | # Write to disk. If the job status is final, this is the final write
|
1207 | 26d3fd2f | Michael Hanselmann | # allowed. Once the file has been written, it can be archived anytime.
|
1208 | 26d3fd2f | Michael Hanselmann | queue.UpdateJobUnlocked(job) |
1209 | be760ba8 | Michael Hanselmann | |
1210 | b95479a5 | Michael Hanselmann | assert not waitjob |
1211 | b95479a5 | Michael Hanselmann | |
1212 | 66bd7445 | Michael Hanselmann | if finalize:
|
1213 | 26d3fd2f | Michael Hanselmann | logging.info("Finished job %s, status = %s", job.id, job.CalcStatus())
|
1214 | 75d81fc8 | Michael Hanselmann | return self.FINISHED |
1215 | be760ba8 | Michael Hanselmann | |
1216 | b95479a5 | Michael Hanselmann | assert not waitjob or queue.depmgr.JobWaiting(job) |
1217 | b95479a5 | Michael Hanselmann | |
1218 | 75d81fc8 | Michael Hanselmann | if waitjob:
|
1219 | 75d81fc8 | Michael Hanselmann | return self.WAITDEP |
1220 | 75d81fc8 | Michael Hanselmann | else:
|
1221 | 75d81fc8 | Michael Hanselmann | return self.DEFER |
1222 | be760ba8 | Michael Hanselmann | finally:
|
1223 | c0f6d0d8 | Michael Hanselmann | assert job.writable, "Job became read-only while being processed" |
1224 | be760ba8 | Michael Hanselmann | queue.release() |
1225 | be760ba8 | Michael Hanselmann | |
1226 | be760ba8 | Michael Hanselmann | |
1227 | df5a5730 | Michael Hanselmann | def _EvaluateJobProcessorResult(depmgr, job, result): |
1228 | df5a5730 | Michael Hanselmann | """Looks at a result from L{_JobProcessor} for a job.
|
1229 | df5a5730 | Michael Hanselmann |
|
1230 | df5a5730 | Michael Hanselmann | To be used in a L{_JobQueueWorker}.
|
1231 | df5a5730 | Michael Hanselmann |
|
1232 | df5a5730 | Michael Hanselmann | """
|
1233 | df5a5730 | Michael Hanselmann | if result == _JobProcessor.FINISHED:
|
1234 | df5a5730 | Michael Hanselmann | # Notify waiting jobs
|
1235 | df5a5730 | Michael Hanselmann | depmgr.NotifyWaiters(job.id) |
1236 | df5a5730 | Michael Hanselmann | |
1237 | df5a5730 | Michael Hanselmann | elif result == _JobProcessor.DEFER:
|
1238 | df5a5730 | Michael Hanselmann | # Schedule again
|
1239 | df5a5730 | Michael Hanselmann | raise workerpool.DeferTask(priority=job.CalcPriority())
|
1240 | df5a5730 | Michael Hanselmann | |
1241 | df5a5730 | Michael Hanselmann | elif result == _JobProcessor.WAITDEP:
|
1242 | df5a5730 | Michael Hanselmann | # No-op, dependency manager will re-schedule
|
1243 | df5a5730 | Michael Hanselmann | pass
|
1244 | df5a5730 | Michael Hanselmann | |
1245 | df5a5730 | Michael Hanselmann | else:
|
1246 | df5a5730 | Michael Hanselmann | raise errors.ProgrammerError("Job processor returned unknown status %s" % |
1247 | df5a5730 | Michael Hanselmann | (result, )) |
1248 | df5a5730 | Michael Hanselmann | |
1249 | df5a5730 | Michael Hanselmann | |
1250 | 031a3e57 | Michael Hanselmann | class _JobQueueWorker(workerpool.BaseWorker): |
1251 | 031a3e57 | Michael Hanselmann | """The actual job workers.
|
1252 | 031a3e57 | Michael Hanselmann |
|
1253 | 031a3e57 | Michael Hanselmann | """
|
1254 | b459a848 | Andrea Spadaccini | def RunTask(self, job): # pylint: disable=W0221 |
1255 | e2715f69 | Michael Hanselmann | """Job executor.
|
1256 | e2715f69 | Michael Hanselmann |
|
1257 | ea03467c | Iustin Pop | @type job: L{_QueuedJob}
|
1258 | ea03467c | Iustin Pop | @param job: the job to be processed
|
1259 | ea03467c | Iustin Pop |
|
1260 | e2715f69 | Michael Hanselmann | """
|
1261 | f8a4adfa | Michael Hanselmann | assert job.writable, "Expected writable job" |
1262 | f8a4adfa | Michael Hanselmann | |
1263 | b95479a5 | Michael Hanselmann | # Ensure only one worker is active on a single job. If a job registers for
|
1264 | b95479a5 | Michael Hanselmann | # a dependency job, and the other job notifies before the first worker is
|
1265 | b95479a5 | Michael Hanselmann | # done, the job can end up in the tasklist more than once.
|
1266 | b95479a5 | Michael Hanselmann | job.processor_lock.acquire() |
1267 | b95479a5 | Michael Hanselmann | try:
|
1268 | b95479a5 | Michael Hanselmann | return self._RunTaskInner(job) |
1269 | b95479a5 | Michael Hanselmann | finally:
|
1270 | b95479a5 | Michael Hanselmann | job.processor_lock.release() |
1271 | b95479a5 | Michael Hanselmann | |
1272 | b95479a5 | Michael Hanselmann | def _RunTaskInner(self, job): |
1273 | b95479a5 | Michael Hanselmann | """Executes a job.
|
1274 | b95479a5 | Michael Hanselmann |
|
1275 | b95479a5 | Michael Hanselmann | Must be called with per-job lock acquired.
|
1276 | b95479a5 | Michael Hanselmann |
|
1277 | b95479a5 | Michael Hanselmann | """
|
1278 | be760ba8 | Michael Hanselmann | queue = job.queue |
1279 | be760ba8 | Michael Hanselmann | assert queue == self.pool.queue |
1280 | be760ba8 | Michael Hanselmann | |
1281 | 0aeeb6e3 | Michael Hanselmann | setname_fn = lambda op: self.SetTaskName(self._GetWorkerName(job, op)) |
1282 | 0aeeb6e3 | Michael Hanselmann | setname_fn(None)
|
1283 | daba67c7 | Michael Hanselmann | |
1284 | be760ba8 | Michael Hanselmann | proc = mcpu.Processor(queue.context, job.id) |
1285 | be760ba8 | Michael Hanselmann | |
1286 | 0aeeb6e3 | Michael Hanselmann | # Create wrapper for setting thread name
|
1287 | 0aeeb6e3 | Michael Hanselmann | wrap_execop_fn = compat.partial(self._WrapExecOpCode, setname_fn,
|
1288 | 0aeeb6e3 | Michael Hanselmann | proc.ExecOpCode) |
1289 | 0aeeb6e3 | Michael Hanselmann | |
1290 | df5a5730 | Michael Hanselmann | _EvaluateJobProcessorResult(queue.depmgr, job, |
1291 | df5a5730 | Michael Hanselmann | _JobProcessor(queue, wrap_execop_fn, job)()) |
1292 | 75d81fc8 | Michael Hanselmann | |
1293 | 0aeeb6e3 | Michael Hanselmann | @staticmethod
|
1294 | 0aeeb6e3 | Michael Hanselmann | def _WrapExecOpCode(setname_fn, execop_fn, op, *args, **kwargs): |
1295 | 0aeeb6e3 | Michael Hanselmann | """Updates the worker thread name to include a short summary of the opcode.
|
1296 | 0aeeb6e3 | Michael Hanselmann |
|
1297 | 0aeeb6e3 | Michael Hanselmann | @param setname_fn: Callable setting worker thread name
|
1298 | 0aeeb6e3 | Michael Hanselmann | @param execop_fn: Callable for executing opcode (usually
|
1299 | 0aeeb6e3 | Michael Hanselmann | L{mcpu.Processor.ExecOpCode})
|
1300 | 0aeeb6e3 | Michael Hanselmann |
|
1301 | 0aeeb6e3 | Michael Hanselmann | """
|
1302 | 0aeeb6e3 | Michael Hanselmann | setname_fn(op) |
1303 | 0aeeb6e3 | Michael Hanselmann | try:
|
1304 | 0aeeb6e3 | Michael Hanselmann | return execop_fn(op, *args, **kwargs)
|
1305 | 0aeeb6e3 | Michael Hanselmann | finally:
|
1306 | 0aeeb6e3 | Michael Hanselmann | setname_fn(None)
|
1307 | 0aeeb6e3 | Michael Hanselmann | |
1308 | 0aeeb6e3 | Michael Hanselmann | @staticmethod
|
1309 | 0aeeb6e3 | Michael Hanselmann | def _GetWorkerName(job, op): |
1310 | 0aeeb6e3 | Michael Hanselmann | """Sets the worker thread name.
|
1311 | 0aeeb6e3 | Michael Hanselmann |
|
1312 | 0aeeb6e3 | Michael Hanselmann | @type job: L{_QueuedJob}
|
1313 | 0aeeb6e3 | Michael Hanselmann | @type op: L{opcodes.OpCode}
|
1314 | 0aeeb6e3 | Michael Hanselmann |
|
1315 | 0aeeb6e3 | Michael Hanselmann | """
|
1316 | 0aeeb6e3 | Michael Hanselmann | parts = ["Job%s" % job.id]
|
1317 | 0aeeb6e3 | Michael Hanselmann | |
1318 | 0aeeb6e3 | Michael Hanselmann | if op:
|
1319 | 0aeeb6e3 | Michael Hanselmann | parts.append(op.TinySummary()) |
1320 | 0aeeb6e3 | Michael Hanselmann | |
1321 | 0aeeb6e3 | Michael Hanselmann | return "/".join(parts) |
1322 | 0aeeb6e3 | Michael Hanselmann | |
1323 | e2715f69 | Michael Hanselmann | |
1324 | e2715f69 | Michael Hanselmann | class _JobQueueWorkerPool(workerpool.WorkerPool): |
1325 | ea03467c | Iustin Pop | """Simple class implementing a job-processing workerpool.
|
1326 | ea03467c | Iustin Pop |
|
1327 | ea03467c | Iustin Pop | """
|
1328 | 5bdce580 | Michael Hanselmann | def __init__(self, queue): |
1329 | 0aeeb6e3 | Michael Hanselmann | super(_JobQueueWorkerPool, self).__init__("Jq", |
1330 | 89e2b4d2 | Michael Hanselmann | JOBQUEUE_THREADS, |
1331 | e2715f69 | Michael Hanselmann | _JobQueueWorker) |
1332 | 5bdce580 | Michael Hanselmann | self.queue = queue
|
1333 | e2715f69 | Michael Hanselmann | |
1334 | e2715f69 | Michael Hanselmann | |
1335 | b95479a5 | Michael Hanselmann | class _JobDependencyManager: |
1336 | b95479a5 | Michael Hanselmann | """Keeps track of job dependencies.
|
1337 | b95479a5 | Michael Hanselmann |
|
1338 | b95479a5 | Michael Hanselmann | """
|
1339 | b95479a5 | Michael Hanselmann | (WAIT, |
1340 | b95479a5 | Michael Hanselmann | ERROR, |
1341 | b95479a5 | Michael Hanselmann | CANCEL, |
1342 | b95479a5 | Michael Hanselmann | CONTINUE, |
1343 | b95479a5 | Michael Hanselmann | WRONGSTATUS) = range(1, 6) |
1344 | b95479a5 | Michael Hanselmann | |
1345 | b95479a5 | Michael Hanselmann | def __init__(self, getstatus_fn, enqueue_fn): |
1346 | b95479a5 | Michael Hanselmann | """Initializes this class.
|
1347 | b95479a5 | Michael Hanselmann |
|
1348 | b95479a5 | Michael Hanselmann | """
|
1349 | b95479a5 | Michael Hanselmann | self._getstatus_fn = getstatus_fn
|
1350 | b95479a5 | Michael Hanselmann | self._enqueue_fn = enqueue_fn
|
1351 | b95479a5 | Michael Hanselmann | |
1352 | b95479a5 | Michael Hanselmann | self._waiters = {}
|
1353 | b95479a5 | Michael Hanselmann | self._lock = locking.SharedLock("JobDepMgr") |
1354 | b95479a5 | Michael Hanselmann | |
1355 | b95479a5 | Michael Hanselmann | @locking.ssynchronized(_LOCK, shared=1) |
1356 | b459a848 | Andrea Spadaccini | def GetLockInfo(self, requested): # pylint: disable=W0613 |
1357 | fcb21ad7 | Michael Hanselmann | """Retrieves information about waiting jobs.
|
1358 | fcb21ad7 | Michael Hanselmann |
|
1359 | fcb21ad7 | Michael Hanselmann | @type requested: set
|
1360 | fcb21ad7 | Michael Hanselmann | @param requested: Requested information, see C{query.LQ_*}
|
1361 | fcb21ad7 | Michael Hanselmann |
|
1362 | fcb21ad7 | Michael Hanselmann | """
|
1363 | fcb21ad7 | Michael Hanselmann | # No need to sort here, that's being done by the lock manager and query
|
1364 | fcb21ad7 | Michael Hanselmann | # library. There are no priorities for notifying jobs, hence all show up as
|
1365 | fcb21ad7 | Michael Hanselmann | # one item under "pending".
|
1366 | fcb21ad7 | Michael Hanselmann | return [("job/%s" % job_id, None, None, |
1367 | fcb21ad7 | Michael Hanselmann | [("job", [job.id for job in waiters])]) |
1368 | fcb21ad7 | Michael Hanselmann | for job_id, waiters in self._waiters.items() |
1369 | fcb21ad7 | Michael Hanselmann | if waiters]
|
1370 | fcb21ad7 | Michael Hanselmann | |
1371 | fcb21ad7 | Michael Hanselmann | @locking.ssynchronized(_LOCK, shared=1) |
1372 | b95479a5 | Michael Hanselmann | def JobWaiting(self, job): |
1373 | b95479a5 | Michael Hanselmann | """Checks if a job is waiting.
|
1374 | b95479a5 | Michael Hanselmann |
|
1375 | b95479a5 | Michael Hanselmann | """
|
1376 | b95479a5 | Michael Hanselmann | return compat.any(job in jobs |
1377 | b95479a5 | Michael Hanselmann | for jobs in self._waiters.values()) |
1378 | b95479a5 | Michael Hanselmann | |
1379 | b95479a5 | Michael Hanselmann | @locking.ssynchronized(_LOCK)
|
1380 | b95479a5 | Michael Hanselmann | def CheckAndRegister(self, job, dep_job_id, dep_status): |
1381 | b95479a5 | Michael Hanselmann | """Checks if a dependency job has the requested status.
|
1382 | b95479a5 | Michael Hanselmann |
|
1383 | b95479a5 | Michael Hanselmann | If the other job is not yet in a finalized status, the calling job will be
|
1384 | b95479a5 | Michael Hanselmann | notified (re-added to the workerpool) at a later point.
|
1385 | b95479a5 | Michael Hanselmann |
|
1386 | b95479a5 | Michael Hanselmann | @type job: L{_QueuedJob}
|
1387 | b95479a5 | Michael Hanselmann | @param job: Job object
|
1388 | b95479a5 | Michael Hanselmann | @type dep_job_id: string
|
1389 | b95479a5 | Michael Hanselmann | @param dep_job_id: ID of dependency job
|
1390 | b95479a5 | Michael Hanselmann | @type dep_status: list
|
1391 | b95479a5 | Michael Hanselmann | @param dep_status: Required status
|
1392 | b95479a5 | Michael Hanselmann |
|
1393 | b95479a5 | Michael Hanselmann | """
|
1394 | b95479a5 | Michael Hanselmann | assert ht.TString(job.id)
|
1395 | b95479a5 | Michael Hanselmann | assert ht.TString(dep_job_id)
|
1396 | b95479a5 | Michael Hanselmann | assert ht.TListOf(ht.TElemOf(constants.JOBS_FINALIZED))(dep_status)
|
1397 | b95479a5 | Michael Hanselmann | |
1398 | b95479a5 | Michael Hanselmann | if job.id == dep_job_id:
|
1399 | b95479a5 | Michael Hanselmann | return (self.ERROR, "Job can't depend on itself") |
1400 | b95479a5 | Michael Hanselmann | |
1401 | b95479a5 | Michael Hanselmann | # Get status of dependency job
|
1402 | b95479a5 | Michael Hanselmann | try:
|
1403 | b95479a5 | Michael Hanselmann | status = self._getstatus_fn(dep_job_id)
|
1404 | b95479a5 | Michael Hanselmann | except errors.JobLost, err:
|
1405 | b95479a5 | Michael Hanselmann | return (self.ERROR, "Dependency error: %s" % err) |
1406 | b95479a5 | Michael Hanselmann | |
1407 | b95479a5 | Michael Hanselmann | assert status in constants.JOB_STATUS_ALL |
1408 | b95479a5 | Michael Hanselmann | |
1409 | b95479a5 | Michael Hanselmann | job_id_waiters = self._waiters.setdefault(dep_job_id, set()) |
1410 | b95479a5 | Michael Hanselmann | |
1411 | b95479a5 | Michael Hanselmann | if status not in constants.JOBS_FINALIZED: |
1412 | b95479a5 | Michael Hanselmann | # Register for notification and wait for job to finish
|
1413 | b95479a5 | Michael Hanselmann | job_id_waiters.add(job) |
1414 | b95479a5 | Michael Hanselmann | return (self.WAIT, |
1415 | b95479a5 | Michael Hanselmann | "Need to wait for job %s, wanted status '%s'" %
|
1416 | b95479a5 | Michael Hanselmann | (dep_job_id, dep_status)) |
1417 | b95479a5 | Michael Hanselmann | |
1418 | b95479a5 | Michael Hanselmann | # Remove from waiters list
|
1419 | b95479a5 | Michael Hanselmann | if job in job_id_waiters: |
1420 | b95479a5 | Michael Hanselmann | job_id_waiters.remove(job) |
1421 | b95479a5 | Michael Hanselmann | |
1422 | b95479a5 | Michael Hanselmann | if (status == constants.JOB_STATUS_CANCELED and |
1423 | b95479a5 | Michael Hanselmann | constants.JOB_STATUS_CANCELED not in dep_status): |
1424 | b95479a5 | Michael Hanselmann | return (self.CANCEL, "Dependency job %s was cancelled" % dep_job_id) |
1425 | b95479a5 | Michael Hanselmann | |
1426 | b95479a5 | Michael Hanselmann | elif not dep_status or status in dep_status: |
1427 | b95479a5 | Michael Hanselmann | return (self.CONTINUE, |
1428 | b95479a5 | Michael Hanselmann | "Dependency job %s finished with status '%s'" %
|
1429 | b95479a5 | Michael Hanselmann | (dep_job_id, status)) |
1430 | b95479a5 | Michael Hanselmann | |
1431 | b95479a5 | Michael Hanselmann | else:
|
1432 | b95479a5 | Michael Hanselmann | return (self.WRONGSTATUS, |
1433 | b95479a5 | Michael Hanselmann | "Dependency job %s finished with status '%s',"
|
1434 | b95479a5 | Michael Hanselmann | " not one of '%s' as required" %
|
1435 | b95479a5 | Michael Hanselmann | (dep_job_id, status, utils.CommaJoin(dep_status))) |
1436 | b95479a5 | Michael Hanselmann | |
1437 | 37d76f1e | Michael Hanselmann | def _RemoveEmptyWaitersUnlocked(self): |
1438 | 37d76f1e | Michael Hanselmann | """Remove all jobs without actual waiters.
|
1439 | 37d76f1e | Michael Hanselmann |
|
1440 | 37d76f1e | Michael Hanselmann | """
|
1441 | 37d76f1e | Michael Hanselmann | for job_id in [job_id for (job_id, waiters) in self._waiters.items() |
1442 | 37d76f1e | Michael Hanselmann | if not waiters]: |
1443 | 37d76f1e | Michael Hanselmann | del self._waiters[job_id] |
1444 | 37d76f1e | Michael Hanselmann | |
1445 | b95479a5 | Michael Hanselmann | def NotifyWaiters(self, job_id): |
1446 | b95479a5 | Michael Hanselmann | """Notifies all jobs waiting for a certain job ID.
|
1447 | b95479a5 | Michael Hanselmann |
|
1448 | 1316ebc2 | Michael Hanselmann | @attention: Do not call until L{CheckAndRegister} returned a status other
|
1449 | 1316ebc2 | Michael Hanselmann | than C{WAITDEP} for C{job_id}, or behaviour is undefined
|
1450 | b95479a5 | Michael Hanselmann | @type job_id: string
|
1451 | b95479a5 | Michael Hanselmann | @param job_id: Job ID
|
1452 | b95479a5 | Michael Hanselmann |
|
1453 | b95479a5 | Michael Hanselmann | """
|
1454 | b95479a5 | Michael Hanselmann | assert ht.TString(job_id)
|
1455 | b95479a5 | Michael Hanselmann | |
1456 | 37d76f1e | Michael Hanselmann | self._lock.acquire()
|
1457 | 37d76f1e | Michael Hanselmann | try:
|
1458 | 37d76f1e | Michael Hanselmann | self._RemoveEmptyWaitersUnlocked()
|
1459 | 37d76f1e | Michael Hanselmann | |
1460 | 37d76f1e | Michael Hanselmann | jobs = self._waiters.pop(job_id, None) |
1461 | 37d76f1e | Michael Hanselmann | finally:
|
1462 | 37d76f1e | Michael Hanselmann | self._lock.release()
|
1463 | 37d76f1e | Michael Hanselmann | |
1464 | b95479a5 | Michael Hanselmann | if jobs:
|
1465 | b95479a5 | Michael Hanselmann | # Re-add jobs to workerpool
|
1466 | b95479a5 | Michael Hanselmann | logging.debug("Re-adding %s jobs which were waiting for job %s",
|
1467 | b95479a5 | Michael Hanselmann | len(jobs), job_id)
|
1468 | b95479a5 | Michael Hanselmann | self._enqueue_fn(jobs)
|
1469 | b95479a5 | Michael Hanselmann | |
1470 | b95479a5 | Michael Hanselmann | |
1471 | 6c881c52 | Iustin Pop | def _RequireOpenQueue(fn): |
1472 | 6c881c52 | Iustin Pop | """Decorator for "public" functions.
|
1473 | ea03467c | Iustin Pop |
|
1474 | 6c881c52 | Iustin Pop | This function should be used for all 'public' functions. That is,
|
1475 | 6c881c52 | Iustin Pop | functions usually called from other classes. Note that this should
|
1476 | 6c881c52 | Iustin Pop | be applied only to methods (not plain functions), since it expects
|
1477 | 6c881c52 | Iustin Pop | that the decorated function is called with a first argument that has
|
1478 | a71f9c7d | Guido Trotter | a '_queue_filelock' argument.
|
1479 | ea03467c | Iustin Pop |
|
1480 | 99bd4f0a | Guido Trotter | @warning: Use this decorator only after locking.ssynchronized
|
1481 | f1da30e6 | Michael Hanselmann |
|
1482 | 6c881c52 | Iustin Pop | Example::
|
1483 | ebb80afa | Guido Trotter | @locking.ssynchronized(_LOCK)
|
1484 | 6c881c52 | Iustin Pop | @_RequireOpenQueue
|
1485 | 6c881c52 | Iustin Pop | def Example(self):
|
1486 | 6c881c52 | Iustin Pop | pass
|
1487 | db37da70 | Michael Hanselmann |
|
1488 | 6c881c52 | Iustin Pop | """
|
1489 | 6c881c52 | Iustin Pop | def wrapper(self, *args, **kwargs): |
1490 | b459a848 | Andrea Spadaccini | # pylint: disable=W0212
|
1491 | a71f9c7d | Guido Trotter | assert self._queue_filelock is not None, "Queue should be open" |
1492 | 6c881c52 | Iustin Pop | return fn(self, *args, **kwargs) |
1493 | 6c881c52 | Iustin Pop | return wrapper
|
1494 | db37da70 | Michael Hanselmann | |
1495 | db37da70 | Michael Hanselmann | |
1496 | c8d0be94 | Michael Hanselmann | def _RequireNonDrainedQueue(fn): |
1497 | c8d0be94 | Michael Hanselmann | """Decorator checking for a non-drained queue.
|
1498 | c8d0be94 | Michael Hanselmann |
|
1499 | c8d0be94 | Michael Hanselmann | To be used with functions submitting new jobs.
|
1500 | c8d0be94 | Michael Hanselmann |
|
1501 | c8d0be94 | Michael Hanselmann | """
|
1502 | c8d0be94 | Michael Hanselmann | def wrapper(self, *args, **kwargs): |
1503 | c8d0be94 | Michael Hanselmann | """Wrapper function.
|
1504 | c8d0be94 | Michael Hanselmann |
|
1505 | c8d0be94 | Michael Hanselmann | @raise errors.JobQueueDrainError: if the job queue is marked for draining
|
1506 | c8d0be94 | Michael Hanselmann |
|
1507 | c8d0be94 | Michael Hanselmann | """
|
1508 | c8d0be94 | Michael Hanselmann | # Ok when sharing the big job queue lock, as the drain file is created when
|
1509 | c8d0be94 | Michael Hanselmann | # the lock is exclusive.
|
1510 | c8d0be94 | Michael Hanselmann | # Needs access to protected member, pylint: disable=W0212
|
1511 | c8d0be94 | Michael Hanselmann | if self._drained: |
1512 | c8d0be94 | Michael Hanselmann | raise errors.JobQueueDrainError("Job queue is drained, refusing job") |
1513 | 6d5ea385 | Michael Hanselmann | |
1514 | 6d5ea385 | Michael Hanselmann | if not self._accepting_jobs: |
1515 | 6d5ea385 | Michael Hanselmann | raise errors.JobQueueError("Job queue is shutting down, refusing job") |
1516 | 6d5ea385 | Michael Hanselmann | |
1517 | c8d0be94 | Michael Hanselmann | return fn(self, *args, **kwargs) |
1518 | c8d0be94 | Michael Hanselmann | return wrapper
|
1519 | c8d0be94 | Michael Hanselmann | |
1520 | c8d0be94 | Michael Hanselmann | |
1521 | 6c881c52 | Iustin Pop | class JobQueue(object): |
1522 | 6c881c52 | Iustin Pop | """Queue used to manage the jobs.
|
1523 | db37da70 | Michael Hanselmann |
|
1524 | 6c881c52 | Iustin Pop | """
|
1525 | 85f03e0d | Michael Hanselmann | def __init__(self, context): |
1526 | ea03467c | Iustin Pop | """Constructor for JobQueue.
|
1527 | ea03467c | Iustin Pop |
|
1528 | ea03467c | Iustin Pop | The constructor will initialize the job queue object and then
|
1529 | ea03467c | Iustin Pop | start loading the current jobs from disk, either for starting them
|
1530 | ea03467c | Iustin Pop | (if they were queue) or for aborting them (if they were already
|
1531 | ea03467c | Iustin Pop | running).
|
1532 | ea03467c | Iustin Pop |
|
1533 | ea03467c | Iustin Pop | @type context: GanetiContext
|
1534 | ea03467c | Iustin Pop | @param context: the context object for access to the configuration
|
1535 | ea03467c | Iustin Pop | data and other ganeti objects
|
1536 | ea03467c | Iustin Pop |
|
1537 | ea03467c | Iustin Pop | """
|
1538 | 5bdce580 | Michael Hanselmann | self.context = context
|
1539 | 5685c1a5 | Michael Hanselmann | self._memcache = weakref.WeakValueDictionary()
|
1540 | b705c7a6 | Manuel Franceschini | self._my_hostname = netutils.Hostname.GetSysName()
|
1541 | f1da30e6 | Michael Hanselmann | |
1542 | ebb80afa | Guido Trotter | # The Big JobQueue lock. If a code block or method acquires it in shared
|
1543 | ebb80afa | Guido Trotter | # mode safe it must guarantee concurrency with all the code acquiring it in
|
1544 | ebb80afa | Guido Trotter | # shared mode, including itself. In order not to acquire it at all
|
1545 | ebb80afa | Guido Trotter | # concurrency must be guaranteed with all code acquiring it in shared mode
|
1546 | ebb80afa | Guido Trotter | # and all code acquiring it exclusively.
|
1547 | 7f93570a | Iustin Pop | self._lock = locking.SharedLock("JobQueue") |
1548 | ebb80afa | Guido Trotter | |
1549 | ebb80afa | Guido Trotter | self.acquire = self._lock.acquire |
1550 | ebb80afa | Guido Trotter | self.release = self._lock.release |
1551 | 85f03e0d | Michael Hanselmann | |
1552 | 6d5ea385 | Michael Hanselmann | # Accept jobs by default
|
1553 | 6d5ea385 | Michael Hanselmann | self._accepting_jobs = True |
1554 | 6d5ea385 | Michael Hanselmann | |
1555 | a71f9c7d | Guido Trotter | # Initialize the queue, and acquire the filelock.
|
1556 | a71f9c7d | Guido Trotter | # This ensures no other process is working on the job queue.
|
1557 | a71f9c7d | Guido Trotter | self._queue_filelock = jstore.InitAndVerifyQueue(must_lock=True) |
1558 | f1da30e6 | Michael Hanselmann | |
1559 | 04ab05ce | Michael Hanselmann | # Read serial file
|
1560 | 04ab05ce | Michael Hanselmann | self._last_serial = jstore.ReadSerial()
|
1561 | 04ab05ce | Michael Hanselmann | assert self._last_serial is not None, ("Serial file was modified between" |
1562 | 04ab05ce | Michael Hanselmann | " check in jstore and here")
|
1563 | c4beba1c | Iustin Pop | |
1564 | 23752136 | Michael Hanselmann | # Get initial list of nodes
|
1565 | 99aabbed | Iustin Pop | self._nodes = dict((n.name, n.primary_ip) |
1566 | 59303563 | Iustin Pop | for n in self.context.cfg.GetAllNodesInfo().values() |
1567 | 59303563 | Iustin Pop | if n.master_candidate)
|
1568 | 8e00939c | Michael Hanselmann | |
1569 | 8e00939c | Michael Hanselmann | # Remove master node
|
1570 | d8e0dc17 | Guido Trotter | self._nodes.pop(self._my_hostname, None) |
1571 | 23752136 | Michael Hanselmann | |
1572 | 23752136 | Michael Hanselmann | # TODO: Check consistency across nodes
|
1573 | 23752136 | Michael Hanselmann | |
1574 | 6d5ea385 | Michael Hanselmann | self._queue_size = None |
1575 | 20571a26 | Guido Trotter | self._UpdateQueueSizeUnlocked()
|
1576 | 6d5ea385 | Michael Hanselmann | assert ht.TInt(self._queue_size) |
1577 | ff699aa9 | Michael Hanselmann | self._drained = jstore.CheckDrainFlag()
|
1578 | 20571a26 | Guido Trotter | |
1579 | b95479a5 | Michael Hanselmann | # Job dependencies
|
1580 | b95479a5 | Michael Hanselmann | self.depmgr = _JobDependencyManager(self._GetJobStatusForDependencies, |
1581 | b95479a5 | Michael Hanselmann | self._EnqueueJobs)
|
1582 | fcb21ad7 | Michael Hanselmann | self.context.glm.AddToLockMonitor(self.depmgr) |
1583 | b95479a5 | Michael Hanselmann | |
1584 | 85f03e0d | Michael Hanselmann | # Setup worker pool
|
1585 | 5bdce580 | Michael Hanselmann | self._wpool = _JobQueueWorkerPool(self) |
1586 | 85f03e0d | Michael Hanselmann | try:
|
1587 | de9d02c7 | Michael Hanselmann | self._InspectQueue()
|
1588 | de9d02c7 | Michael Hanselmann | except:
|
1589 | de9d02c7 | Michael Hanselmann | self._wpool.TerminateWorkers()
|
1590 | de9d02c7 | Michael Hanselmann | raise
|
1591 | 711b5124 | Michael Hanselmann | |
1592 | de9d02c7 | Michael Hanselmann | @locking.ssynchronized(_LOCK)
|
1593 | de9d02c7 | Michael Hanselmann | @_RequireOpenQueue
|
1594 | de9d02c7 | Michael Hanselmann | def _InspectQueue(self): |
1595 | de9d02c7 | Michael Hanselmann | """Loads the whole job queue and resumes unfinished jobs.
|
1596 | de9d02c7 | Michael Hanselmann |
|
1597 | de9d02c7 | Michael Hanselmann | This function needs the lock here because WorkerPool.AddTask() may start a
|
1598 | de9d02c7 | Michael Hanselmann | job while we're still doing our work.
|
1599 | 711b5124 | Michael Hanselmann |
|
1600 | de9d02c7 | Michael Hanselmann | """
|
1601 | de9d02c7 | Michael Hanselmann | logging.info("Inspecting job queue")
|
1602 | de9d02c7 | Michael Hanselmann | |
1603 | 7b5c4a69 | Michael Hanselmann | restartjobs = [] |
1604 | 7b5c4a69 | Michael Hanselmann | |
1605 | de9d02c7 | Michael Hanselmann | all_job_ids = self._GetJobIDsUnlocked()
|
1606 | de9d02c7 | Michael Hanselmann | jobs_count = len(all_job_ids)
|
1607 | de9d02c7 | Michael Hanselmann | lastinfo = time.time() |
1608 | de9d02c7 | Michael Hanselmann | for idx, job_id in enumerate(all_job_ids): |
1609 | de9d02c7 | Michael Hanselmann | # Give an update every 1000 jobs or 10 seconds
|
1610 | de9d02c7 | Michael Hanselmann | if (idx % 1000 == 0 or time.time() >= (lastinfo + 10.0) or |
1611 | de9d02c7 | Michael Hanselmann | idx == (jobs_count - 1)):
|
1612 | de9d02c7 | Michael Hanselmann | logging.info("Job queue inspection: %d/%d (%0.1f %%)",
|
1613 | de9d02c7 | Michael Hanselmann | idx, jobs_count - 1, 100.0 * (idx + 1) / jobs_count) |
1614 | 711b5124 | Michael Hanselmann | lastinfo = time.time() |
1615 | 94ed59a5 | Iustin Pop | |
1616 | de9d02c7 | Michael Hanselmann | job = self._LoadJobUnlocked(job_id)
|
1617 | 85f03e0d | Michael Hanselmann | |
1618 | de9d02c7 | Michael Hanselmann | # a failure in loading the job can cause 'None' to be returned
|
1619 | de9d02c7 | Michael Hanselmann | if job is None: |
1620 | de9d02c7 | Michael Hanselmann | continue
|
1621 | 85f03e0d | Michael Hanselmann | |
1622 | de9d02c7 | Michael Hanselmann | status = job.CalcStatus() |
1623 | 711b5124 | Michael Hanselmann | |
1624 | 320d1daf | Michael Hanselmann | if status == constants.JOB_STATUS_QUEUED:
|
1625 | 7b5c4a69 | Michael Hanselmann | restartjobs.append(job) |
1626 | de9d02c7 | Michael Hanselmann | |
1627 | de9d02c7 | Michael Hanselmann | elif status in (constants.JOB_STATUS_RUNNING, |
1628 | 47099cd1 | Michael Hanselmann | constants.JOB_STATUS_WAITING, |
1629 | de9d02c7 | Michael Hanselmann | constants.JOB_STATUS_CANCELING): |
1630 | de9d02c7 | Michael Hanselmann | logging.warning("Unfinished job %s found: %s", job.id, job)
|
1631 | 320d1daf | Michael Hanselmann | |
1632 | 47099cd1 | Michael Hanselmann | if status == constants.JOB_STATUS_WAITING:
|
1633 | 320d1daf | Michael Hanselmann | # Restart job
|
1634 | 320d1daf | Michael Hanselmann | job.MarkUnfinishedOps(constants.OP_STATUS_QUEUED, None)
|
1635 | 320d1daf | Michael Hanselmann | restartjobs.append(job) |
1636 | 320d1daf | Michael Hanselmann | else:
|
1637 | 320d1daf | Michael Hanselmann | job.MarkUnfinishedOps(constants.OP_STATUS_ERROR, |
1638 | 320d1daf | Michael Hanselmann | "Unclean master daemon shutdown")
|
1639 | 45df0793 | Michael Hanselmann | job.Finalize() |
1640 | 320d1daf | Michael Hanselmann | |
1641 | de9d02c7 | Michael Hanselmann | self.UpdateJobUnlocked(job)
|
1642 | de9d02c7 | Michael Hanselmann | |
1643 | 7b5c4a69 | Michael Hanselmann | if restartjobs:
|
1644 | 7b5c4a69 | Michael Hanselmann | logging.info("Restarting %s jobs", len(restartjobs)) |
1645 | 75d81fc8 | Michael Hanselmann | self._EnqueueJobsUnlocked(restartjobs)
|
1646 | 7b5c4a69 | Michael Hanselmann | |
1647 | de9d02c7 | Michael Hanselmann | logging.info("Job queue inspection finished")
|
1648 | 85f03e0d | Michael Hanselmann | |
1649 | fb1ffbca | Michael Hanselmann | def _GetRpc(self, address_list): |
1650 | fb1ffbca | Michael Hanselmann | """Gets RPC runner with context.
|
1651 | fb1ffbca | Michael Hanselmann |
|
1652 | fb1ffbca | Michael Hanselmann | """
|
1653 | fb1ffbca | Michael Hanselmann | return rpc.JobQueueRunner(self.context, address_list) |
1654 | fb1ffbca | Michael Hanselmann | |
1655 | ebb80afa | Guido Trotter | @locking.ssynchronized(_LOCK)
|
1656 | d2e03a33 | Michael Hanselmann | @_RequireOpenQueue
|
1657 | 99aabbed | Iustin Pop | def AddNode(self, node): |
1658 | 99aabbed | Iustin Pop | """Register a new node with the queue.
|
1659 | 99aabbed | Iustin Pop |
|
1660 | 99aabbed | Iustin Pop | @type node: L{objects.Node}
|
1661 | 99aabbed | Iustin Pop | @param node: the node object to be added
|
1662 | 99aabbed | Iustin Pop |
|
1663 | 99aabbed | Iustin Pop | """
|
1664 | 99aabbed | Iustin Pop | node_name = node.name |
1665 | d2e03a33 | Michael Hanselmann | assert node_name != self._my_hostname |
1666 | 23752136 | Michael Hanselmann | |
1667 | 9f774ee8 | Michael Hanselmann | # Clean queue directory on added node
|
1668 | fb1ffbca | Michael Hanselmann | result = self._GetRpc(None).call_jobqueue_purge(node_name) |
1669 | 3cebe102 | Michael Hanselmann | msg = result.fail_msg |
1670 | c8457ce7 | Iustin Pop | if msg:
|
1671 | c8457ce7 | Iustin Pop | logging.warning("Cannot cleanup queue directory on node %s: %s",
|
1672 | c8457ce7 | Iustin Pop | node_name, msg) |
1673 | 23752136 | Michael Hanselmann | |
1674 | 59303563 | Iustin Pop | if not node.master_candidate: |
1675 | 59303563 | Iustin Pop | # remove if existing, ignoring errors
|
1676 | 59303563 | Iustin Pop | self._nodes.pop(node_name, None) |
1677 | 59303563 | Iustin Pop | # and skip the replication of the job ids
|
1678 | 59303563 | Iustin Pop | return
|
1679 | 59303563 | Iustin Pop | |
1680 | d2e03a33 | Michael Hanselmann | # Upload the whole queue excluding archived jobs
|
1681 | d2e03a33 | Michael Hanselmann | files = [self._GetJobPath(job_id) for job_id in self._GetJobIDsUnlocked()] |
1682 | 23752136 | Michael Hanselmann | |
1683 | d2e03a33 | Michael Hanselmann | # Upload current serial file
|
1684 | d2e03a33 | Michael Hanselmann | files.append(constants.JOB_QUEUE_SERIAL_FILE) |
1685 | d2e03a33 | Michael Hanselmann | |
1686 | fb1ffbca | Michael Hanselmann | # Static address list
|
1687 | fb1ffbca | Michael Hanselmann | addrs = [node.primary_ip] |
1688 | fb1ffbca | Michael Hanselmann | |
1689 | d2e03a33 | Michael Hanselmann | for file_name in files: |
1690 | 9f774ee8 | Michael Hanselmann | # Read file content
|
1691 | 13998ef2 | Michael Hanselmann | content = utils.ReadFile(file_name) |
1692 | 9f774ee8 | Michael Hanselmann | |
1693 | fb1ffbca | Michael Hanselmann | result = self._GetRpc(addrs).call_jobqueue_update([node_name], file_name,
|
1694 | fb1ffbca | Michael Hanselmann | content) |
1695 | 3cebe102 | Michael Hanselmann | msg = result[node_name].fail_msg |
1696 | c8457ce7 | Iustin Pop | if msg:
|
1697 | c8457ce7 | Iustin Pop | logging.error("Failed to upload file %s to node %s: %s",
|
1698 | c8457ce7 | Iustin Pop | file_name, node_name, msg) |
1699 | d2e03a33 | Michael Hanselmann | |
1700 | 99aabbed | Iustin Pop | self._nodes[node_name] = node.primary_ip
|
1701 | d2e03a33 | Michael Hanselmann | |
1702 | ebb80afa | Guido Trotter | @locking.ssynchronized(_LOCK)
|
1703 | d2e03a33 | Michael Hanselmann | @_RequireOpenQueue
|
1704 | d2e03a33 | Michael Hanselmann | def RemoveNode(self, node_name): |
1705 | ea03467c | Iustin Pop | """Callback called when removing nodes from the cluster.
|
1706 | ea03467c | Iustin Pop |
|
1707 | ea03467c | Iustin Pop | @type node_name: str
|
1708 | ea03467c | Iustin Pop | @param node_name: the name of the node to remove
|
1709 | ea03467c | Iustin Pop |
|
1710 | ea03467c | Iustin Pop | """
|
1711 | d8e0dc17 | Guido Trotter | self._nodes.pop(node_name, None) |
1712 | 23752136 | Michael Hanselmann | |
1713 | 7e950d31 | Iustin Pop | @staticmethod
|
1714 | 7e950d31 | Iustin Pop | def _CheckRpcResult(result, nodes, failmsg): |
1715 | ea03467c | Iustin Pop | """Verifies the status of an RPC call.
|
1716 | ea03467c | Iustin Pop |
|
1717 | ea03467c | Iustin Pop | Since we aim to keep consistency should this node (the current
|
1718 | ea03467c | Iustin Pop | master) fail, we will log errors if our rpc fail, and especially
|
1719 | 5bbd3f7f | Michael Hanselmann | log the case when more than half of the nodes fails.
|
1720 | ea03467c | Iustin Pop |
|
1721 | ea03467c | Iustin Pop | @param result: the data as returned from the rpc call
|
1722 | ea03467c | Iustin Pop | @type nodes: list
|
1723 | ea03467c | Iustin Pop | @param nodes: the list of nodes we made the call to
|
1724 | ea03467c | Iustin Pop | @type failmsg: str
|
1725 | ea03467c | Iustin Pop | @param failmsg: the identifier to be used for logging
|
1726 | ea03467c | Iustin Pop |
|
1727 | ea03467c | Iustin Pop | """
|
1728 | e74798c1 | Michael Hanselmann | failed = [] |
1729 | e74798c1 | Michael Hanselmann | success = [] |
1730 | e74798c1 | Michael Hanselmann | |
1731 | e74798c1 | Michael Hanselmann | for node in nodes: |
1732 | 3cebe102 | Michael Hanselmann | msg = result[node].fail_msg |
1733 | c8457ce7 | Iustin Pop | if msg:
|
1734 | e74798c1 | Michael Hanselmann | failed.append(node) |
1735 | 45e0d704 | Iustin Pop | logging.error("RPC call %s (%s) failed on node %s: %s",
|
1736 | 45e0d704 | Iustin Pop | result[node].call, failmsg, node, msg) |
1737 | c8457ce7 | Iustin Pop | else:
|
1738 | c8457ce7 | Iustin Pop | success.append(node) |
1739 | e74798c1 | Michael Hanselmann | |
1740 | e74798c1 | Michael Hanselmann | # +1 for the master node
|
1741 | e74798c1 | Michael Hanselmann | if (len(success) + 1) < len(failed): |
1742 | e74798c1 | Michael Hanselmann | # TODO: Handle failing nodes
|
1743 | e74798c1 | Michael Hanselmann | logging.error("More than half of the nodes failed")
|
1744 | e74798c1 | Michael Hanselmann | |
1745 | 99aabbed | Iustin Pop | def _GetNodeIp(self): |
1746 | 99aabbed | Iustin Pop | """Helper for returning the node name/ip list.
|
1747 | 99aabbed | Iustin Pop |
|
1748 | ea03467c | Iustin Pop | @rtype: (list, list)
|
1749 | ea03467c | Iustin Pop | @return: a tuple of two lists, the first one with the node
|
1750 | ea03467c | Iustin Pop | names and the second one with the node addresses
|
1751 | ea03467c | Iustin Pop |
|
1752 | 99aabbed | Iustin Pop | """
|
1753 | e35344b4 | Michael Hanselmann | # TODO: Change to "tuple(map(list, zip(*self._nodes.items())))"?
|
1754 | 99aabbed | Iustin Pop | name_list = self._nodes.keys()
|
1755 | 99aabbed | Iustin Pop | addr_list = [self._nodes[name] for name in name_list] |
1756 | 99aabbed | Iustin Pop | return name_list, addr_list
|
1757 | 99aabbed | Iustin Pop | |
1758 | 4c36bdf5 | Guido Trotter | def _UpdateJobQueueFile(self, file_name, data, replicate): |
1759 | 8e00939c | Michael Hanselmann | """Writes a file locally and then replicates it to all nodes.
|
1760 | 8e00939c | Michael Hanselmann |
|
1761 | ea03467c | Iustin Pop | This function will replace the contents of a file on the local
|
1762 | ea03467c | Iustin Pop | node and then replicate it to all the other nodes we have.
|
1763 | ea03467c | Iustin Pop |
|
1764 | ea03467c | Iustin Pop | @type file_name: str
|
1765 | ea03467c | Iustin Pop | @param file_name: the path of the file to be replicated
|
1766 | ea03467c | Iustin Pop | @type data: str
|
1767 | ea03467c | Iustin Pop | @param data: the new contents of the file
|
1768 | 4c36bdf5 | Guido Trotter | @type replicate: boolean
|
1769 | 4c36bdf5 | Guido Trotter | @param replicate: whether to spread the changes to the remote nodes
|
1770 | ea03467c | Iustin Pop |
|
1771 | 8e00939c | Michael Hanselmann | """
|
1772 | 82b22e19 | René Nussbaumer | getents = runtime.GetEnts() |
1773 | 82b22e19 | René Nussbaumer | utils.WriteFile(file_name, data=data, uid=getents.masterd_uid, |
1774 | 82b22e19 | René Nussbaumer | gid=getents.masterd_gid) |
1775 | 8e00939c | Michael Hanselmann | |
1776 | 4c36bdf5 | Guido Trotter | if replicate:
|
1777 | 4c36bdf5 | Guido Trotter | names, addrs = self._GetNodeIp()
|
1778 | fb1ffbca | Michael Hanselmann | result = self._GetRpc(addrs).call_jobqueue_update(names, file_name, data)
|
1779 | 4c36bdf5 | Guido Trotter | self._CheckRpcResult(result, self._nodes, "Updating %s" % file_name) |
1780 | 23752136 | Michael Hanselmann | |
1781 | d7fd1f28 | Michael Hanselmann | def _RenameFilesUnlocked(self, rename): |
1782 | ea03467c | Iustin Pop | """Renames a file locally and then replicate the change.
|
1783 | ea03467c | Iustin Pop |
|
1784 | ea03467c | Iustin Pop | This function will rename a file in the local queue directory
|
1785 | ea03467c | Iustin Pop | and then replicate this rename to all the other nodes we have.
|
1786 | ea03467c | Iustin Pop |
|
1787 | d7fd1f28 | Michael Hanselmann | @type rename: list of (old, new)
|
1788 | d7fd1f28 | Michael Hanselmann | @param rename: List containing tuples mapping old to new names
|
1789 | ea03467c | Iustin Pop |
|
1790 | ea03467c | Iustin Pop | """
|
1791 | dd875d32 | Michael Hanselmann | # Rename them locally
|
1792 | d7fd1f28 | Michael Hanselmann | for old, new in rename: |
1793 | d7fd1f28 | Michael Hanselmann | utils.RenameFile(old, new, mkdir=True)
|
1794 | abc1f2ce | Michael Hanselmann | |
1795 | dd875d32 | Michael Hanselmann | # ... and on all nodes
|
1796 | dd875d32 | Michael Hanselmann | names, addrs = self._GetNodeIp()
|
1797 | fb1ffbca | Michael Hanselmann | result = self._GetRpc(addrs).call_jobqueue_rename(names, rename)
|
1798 | dd875d32 | Michael Hanselmann | self._CheckRpcResult(result, self._nodes, "Renaming files (%r)" % rename) |
1799 | abc1f2ce | Michael Hanselmann | |
1800 | 7e950d31 | Iustin Pop | @staticmethod
|
1801 | 7e950d31 | Iustin Pop | def _FormatJobID(job_id): |
1802 | ea03467c | Iustin Pop | """Convert a job ID to string format.
|
1803 | ea03467c | Iustin Pop |
|
1804 | ea03467c | Iustin Pop | Currently this just does C{str(job_id)} after performing some
|
1805 | ea03467c | Iustin Pop | checks, but if we want to change the job id format this will
|
1806 | ea03467c | Iustin Pop | abstract this change.
|
1807 | ea03467c | Iustin Pop |
|
1808 | ea03467c | Iustin Pop | @type job_id: int or long
|
1809 | ea03467c | Iustin Pop | @param job_id: the numeric job id
|
1810 | ea03467c | Iustin Pop | @rtype: str
|
1811 | ea03467c | Iustin Pop | @return: the formatted job id
|
1812 | ea03467c | Iustin Pop |
|
1813 | ea03467c | Iustin Pop | """
|
1814 | 85f03e0d | Michael Hanselmann | if not isinstance(job_id, (int, long)): |
1815 | 85f03e0d | Michael Hanselmann | raise errors.ProgrammerError("Job ID '%s' not numeric" % job_id) |
1816 | 85f03e0d | Michael Hanselmann | if job_id < 0: |
1817 | 85f03e0d | Michael Hanselmann | raise errors.ProgrammerError("Job ID %s is negative" % job_id) |
1818 | 85f03e0d | Michael Hanselmann | |
1819 | 85f03e0d | Michael Hanselmann | return str(job_id) |
1820 | 85f03e0d | Michael Hanselmann | |
1821 | 58b22b6e | Michael Hanselmann | @classmethod
|
1822 | 58b22b6e | Michael Hanselmann | def _GetArchiveDirectory(cls, job_id): |
1823 | 58b22b6e | Michael Hanselmann | """Returns the archive directory for a job.
|
1824 | 58b22b6e | Michael Hanselmann |
|
1825 | 58b22b6e | Michael Hanselmann | @type job_id: str
|
1826 | 58b22b6e | Michael Hanselmann | @param job_id: Job identifier
|
1827 | 58b22b6e | Michael Hanselmann | @rtype: str
|
1828 | 58b22b6e | Michael Hanselmann | @return: Directory name
|
1829 | 58b22b6e | Michael Hanselmann |
|
1830 | 58b22b6e | Michael Hanselmann | """
|
1831 | 58b22b6e | Michael Hanselmann | return str(int(job_id) / JOBS_PER_ARCHIVE_DIRECTORY) |
1832 | 58b22b6e | Michael Hanselmann | |
1833 | 009e73d0 | Iustin Pop | def _NewSerialsUnlocked(self, count): |
1834 | f1da30e6 | Michael Hanselmann | """Generates a new job identifier.
|
1835 | f1da30e6 | Michael Hanselmann |
|
1836 | f1da30e6 | Michael Hanselmann | Job identifiers are unique during the lifetime of a cluster.
|
1837 | f1da30e6 | Michael Hanselmann |
|
1838 | 009e73d0 | Iustin Pop | @type count: integer
|
1839 | 009e73d0 | Iustin Pop | @param count: how many serials to return
|
1840 | ea03467c | Iustin Pop | @rtype: str
|
1841 | ea03467c | Iustin Pop | @return: a string representing the job identifier.
|
1842 | f1da30e6 | Michael Hanselmann |
|
1843 | f1da30e6 | Michael Hanselmann | """
|
1844 | 719f8fba | Michael Hanselmann | assert ht.TPositiveInt(count)
|
1845 | 719f8fba | Michael Hanselmann | |
1846 | f1da30e6 | Michael Hanselmann | # New number
|
1847 | 009e73d0 | Iustin Pop | serial = self._last_serial + count
|
1848 | f1da30e6 | Michael Hanselmann | |
1849 | f1da30e6 | Michael Hanselmann | # Write to file
|
1850 | 4c36bdf5 | Guido Trotter | self._UpdateJobQueueFile(constants.JOB_QUEUE_SERIAL_FILE,
|
1851 | 4c36bdf5 | Guido Trotter | "%s\n" % serial, True) |
1852 | f1da30e6 | Michael Hanselmann | |
1853 | 009e73d0 | Iustin Pop | result = [self._FormatJobID(v)
|
1854 | 3c88bf36 | Michael Hanselmann | for v in range(self._last_serial + 1, serial + 1)] |
1855 | 3c88bf36 | Michael Hanselmann | |
1856 | f1da30e6 | Michael Hanselmann | # Keep it only if we were able to write the file
|
1857 | f1da30e6 | Michael Hanselmann | self._last_serial = serial
|
1858 | f1da30e6 | Michael Hanselmann | |
1859 | 3c88bf36 | Michael Hanselmann | assert len(result) == count |
1860 | 3c88bf36 | Michael Hanselmann | |
1861 | 009e73d0 | Iustin Pop | return result
|
1862 | f1da30e6 | Michael Hanselmann | |
1863 | 85f03e0d | Michael Hanselmann | @staticmethod
|
1864 | 85f03e0d | Michael Hanselmann | def _GetJobPath(job_id): |
1865 | ea03467c | Iustin Pop | """Returns the job file for a given job id.
|
1866 | ea03467c | Iustin Pop |
|
1867 | ea03467c | Iustin Pop | @type job_id: str
|
1868 | ea03467c | Iustin Pop | @param job_id: the job identifier
|
1869 | ea03467c | Iustin Pop | @rtype: str
|
1870 | ea03467c | Iustin Pop | @return: the path to the job file
|
1871 | ea03467c | Iustin Pop |
|
1872 | ea03467c | Iustin Pop | """
|
1873 | c4feafe8 | Iustin Pop | return utils.PathJoin(constants.QUEUE_DIR, "job-%s" % job_id) |
1874 | f1da30e6 | Michael Hanselmann | |
1875 | 58b22b6e | Michael Hanselmann | @classmethod
|
1876 | 58b22b6e | Michael Hanselmann | def _GetArchivedJobPath(cls, job_id): |
1877 | ea03467c | Iustin Pop | """Returns the archived job file for a give job id.
|
1878 | ea03467c | Iustin Pop |
|
1879 | ea03467c | Iustin Pop | @type job_id: str
|
1880 | ea03467c | Iustin Pop | @param job_id: the job identifier
|
1881 | ea03467c | Iustin Pop | @rtype: str
|
1882 | ea03467c | Iustin Pop | @return: the path to the archived job file
|
1883 | ea03467c | Iustin Pop |
|
1884 | ea03467c | Iustin Pop | """
|
1885 | 0411c011 | Iustin Pop | return utils.PathJoin(constants.JOB_QUEUE_ARCHIVE_DIR,
|
1886 | 0411c011 | Iustin Pop | cls._GetArchiveDirectory(job_id), "job-%s" % job_id)
|
1887 | 0cb94105 | Michael Hanselmann | |
1888 | cb66225d | Michael Hanselmann | @staticmethod
|
1889 | cb66225d | Michael Hanselmann | def _GetJobIDsUnlocked(sort=True): |
1890 | 911a495b | Iustin Pop | """Return all known job IDs.
|
1891 | 911a495b | Iustin Pop |
|
1892 | ac0930b9 | Iustin Pop | The method only looks at disk because it's a requirement that all
|
1893 | ac0930b9 | Iustin Pop | jobs are present on disk (so in the _memcache we don't have any
|
1894 | ac0930b9 | Iustin Pop | extra IDs).
|
1895 | ac0930b9 | Iustin Pop |
|
1896 | 85a1c57d | Guido Trotter | @type sort: boolean
|
1897 | 85a1c57d | Guido Trotter | @param sort: perform sorting on the returned job ids
|
1898 | ea03467c | Iustin Pop | @rtype: list
|
1899 | ea03467c | Iustin Pop | @return: the list of job IDs
|
1900 | ea03467c | Iustin Pop |
|
1901 | 911a495b | Iustin Pop | """
|
1902 | 85a1c57d | Guido Trotter | jlist = [] |
1903 | b5b8309d | Guido Trotter | for filename in utils.ListVisibleFiles(constants.QUEUE_DIR): |
1904 | cb66225d | Michael Hanselmann | m = constants.JOB_FILE_RE.match(filename) |
1905 | 85a1c57d | Guido Trotter | if m:
|
1906 | 85a1c57d | Guido Trotter | jlist.append(m.group(1))
|
1907 | 85a1c57d | Guido Trotter | if sort:
|
1908 | 85a1c57d | Guido Trotter | jlist = utils.NiceSort(jlist) |
1909 | f0d874fe | Iustin Pop | return jlist
|
1910 | 911a495b | Iustin Pop | |
1911 | 911a495b | Iustin Pop | def _LoadJobUnlocked(self, job_id): |
1912 | ea03467c | Iustin Pop | """Loads a job from the disk or memory.
|
1913 | ea03467c | Iustin Pop |
|
1914 | ea03467c | Iustin Pop | Given a job id, this will return the cached job object if
|
1915 | ea03467c | Iustin Pop | existing, or try to load the job from the disk. If loading from
|
1916 | ea03467c | Iustin Pop | disk, it will also add the job to the cache.
|
1917 | ea03467c | Iustin Pop |
|
1918 | ea03467c | Iustin Pop | @param job_id: the job id
|
1919 | ea03467c | Iustin Pop | @rtype: L{_QueuedJob} or None
|
1920 | ea03467c | Iustin Pop | @return: either None or the job object
|
1921 | ea03467c | Iustin Pop |
|
1922 | ea03467c | Iustin Pop | """
|
1923 | 5685c1a5 | Michael Hanselmann | job = self._memcache.get(job_id, None) |
1924 | 5685c1a5 | Michael Hanselmann | if job:
|
1925 | 205d71fd | Michael Hanselmann | logging.debug("Found job %s in memcache", job_id)
|
1926 | c0f6d0d8 | Michael Hanselmann | assert job.writable, "Found read-only job in memcache" |
1927 | 5685c1a5 | Michael Hanselmann | return job
|
1928 | ac0930b9 | Iustin Pop | |
1929 | 3d6c5566 | Guido Trotter | try:
|
1930 | 194c8ca4 | Michael Hanselmann | job = self._LoadJobFromDisk(job_id, False) |
1931 | aa9f8167 | Iustin Pop | if job is None: |
1932 | aa9f8167 | Iustin Pop | return job
|
1933 | 3d6c5566 | Guido Trotter | except errors.JobFileCorrupted:
|
1934 | 3d6c5566 | Guido Trotter | old_path = self._GetJobPath(job_id)
|
1935 | 3d6c5566 | Guido Trotter | new_path = self._GetArchivedJobPath(job_id)
|
1936 | 3d6c5566 | Guido Trotter | if old_path == new_path:
|
1937 | 3d6c5566 | Guido Trotter | # job already archived (future case)
|
1938 | 3d6c5566 | Guido Trotter | logging.exception("Can't parse job %s", job_id)
|
1939 | 3d6c5566 | Guido Trotter | else:
|
1940 | 3d6c5566 | Guido Trotter | # non-archived case
|
1941 | 3d6c5566 | Guido Trotter | logging.exception("Can't parse job %s, will archive.", job_id)
|
1942 | 3d6c5566 | Guido Trotter | self._RenameFilesUnlocked([(old_path, new_path)])
|
1943 | 3d6c5566 | Guido Trotter | return None |
1944 | 162c8636 | Guido Trotter | |
1945 | c0f6d0d8 | Michael Hanselmann | assert job.writable, "Job just loaded is not writable" |
1946 | c0f6d0d8 | Michael Hanselmann | |
1947 | 162c8636 | Guido Trotter | self._memcache[job_id] = job
|
1948 | 162c8636 | Guido Trotter | logging.debug("Added job %s to the cache", job_id)
|
1949 | 162c8636 | Guido Trotter | return job
|
1950 | 162c8636 | Guido Trotter | |
1951 | c0f6d0d8 | Michael Hanselmann | def _LoadJobFromDisk(self, job_id, try_archived, writable=None): |
1952 | 162c8636 | Guido Trotter | """Load the given job file from disk.
|
1953 | 162c8636 | Guido Trotter |
|
1954 | 162c8636 | Guido Trotter | Given a job file, read, load and restore it in a _QueuedJob format.
|
1955 | 162c8636 | Guido Trotter |
|
1956 | 162c8636 | Guido Trotter | @type job_id: string
|
1957 | 162c8636 | Guido Trotter | @param job_id: job identifier
|
1958 | 194c8ca4 | Michael Hanselmann | @type try_archived: bool
|
1959 | 194c8ca4 | Michael Hanselmann | @param try_archived: Whether to try loading an archived job
|
1960 | 162c8636 | Guido Trotter | @rtype: L{_QueuedJob} or None
|
1961 | 162c8636 | Guido Trotter | @return: either None or the job object
|
1962 | 162c8636 | Guido Trotter |
|
1963 | 162c8636 | Guido Trotter | """
|
1964 | c0f6d0d8 | Michael Hanselmann | path_functions = [(self._GetJobPath, True)] |
1965 | 194c8ca4 | Michael Hanselmann | |
1966 | 194c8ca4 | Michael Hanselmann | if try_archived:
|
1967 | c0f6d0d8 | Michael Hanselmann | path_functions.append((self._GetArchivedJobPath, False)) |
1968 | 194c8ca4 | Michael Hanselmann | |
1969 | 194c8ca4 | Michael Hanselmann | raw_data = None
|
1970 | c0f6d0d8 | Michael Hanselmann | writable_default = None
|
1971 | 194c8ca4 | Michael Hanselmann | |
1972 | c0f6d0d8 | Michael Hanselmann | for (fn, writable_default) in path_functions: |
1973 | 194c8ca4 | Michael Hanselmann | filepath = fn(job_id) |
1974 | 194c8ca4 | Michael Hanselmann | logging.debug("Loading job from %s", filepath)
|
1975 | 194c8ca4 | Michael Hanselmann | try:
|
1976 | 194c8ca4 | Michael Hanselmann | raw_data = utils.ReadFile(filepath) |
1977 | 194c8ca4 | Michael Hanselmann | except EnvironmentError, err: |
1978 | 194c8ca4 | Michael Hanselmann | if err.errno != errno.ENOENT:
|
1979 | 194c8ca4 | Michael Hanselmann | raise
|
1980 | 194c8ca4 | Michael Hanselmann | else:
|
1981 | 194c8ca4 | Michael Hanselmann | break
|
1982 | 194c8ca4 | Michael Hanselmann | |
1983 | 194c8ca4 | Michael Hanselmann | if not raw_data: |
1984 | 194c8ca4 | Michael Hanselmann | return None |
1985 | 13998ef2 | Michael Hanselmann | |
1986 | c0f6d0d8 | Michael Hanselmann | if writable is None: |
1987 | c0f6d0d8 | Michael Hanselmann | writable = writable_default |
1988 | c0f6d0d8 | Michael Hanselmann | |
1989 | 94ed59a5 | Iustin Pop | try:
|
1990 | 162c8636 | Guido Trotter | data = serializer.LoadJson(raw_data) |
1991 | c0f6d0d8 | Michael Hanselmann | job = _QueuedJob.Restore(self, data, writable)
|
1992 | b459a848 | Andrea Spadaccini | except Exception, err: # pylint: disable=W0703 |
1993 | 3d6c5566 | Guido Trotter | raise errors.JobFileCorrupted(err)
|
1994 | 94ed59a5 | Iustin Pop | |
1995 | ac0930b9 | Iustin Pop | return job
|
1996 | f1da30e6 | Michael Hanselmann | |
1997 | c0f6d0d8 | Michael Hanselmann | def SafeLoadJobFromDisk(self, job_id, try_archived, writable=None): |
1998 | 0f9c08dc | Guido Trotter | """Load the given job file from disk.
|
1999 | 0f9c08dc | Guido Trotter |
|
2000 | 0f9c08dc | Guido Trotter | Given a job file, read, load and restore it in a _QueuedJob format.
|
2001 | 0f9c08dc | Guido Trotter | In case of error reading the job, it gets returned as None, and the
|
2002 | 0f9c08dc | Guido Trotter | exception is logged.
|
2003 | 0f9c08dc | Guido Trotter |
|
2004 | 0f9c08dc | Guido Trotter | @type job_id: string
|
2005 | 0f9c08dc | Guido Trotter | @param job_id: job identifier
|
2006 | 194c8ca4 | Michael Hanselmann | @type try_archived: bool
|
2007 | 194c8ca4 | Michael Hanselmann | @param try_archived: Whether to try loading an archived job
|
2008 | 0f9c08dc | Guido Trotter | @rtype: L{_QueuedJob} or None
|
2009 | 0f9c08dc | Guido Trotter | @return: either None or the job object
|
2010 | 0f9c08dc | Guido Trotter |
|
2011 | 0f9c08dc | Guido Trotter | """
|
2012 | 0f9c08dc | Guido Trotter | try:
|
2013 | c0f6d0d8 | Michael Hanselmann | return self._LoadJobFromDisk(job_id, try_archived, writable=writable) |
2014 | 0f9c08dc | Guido Trotter | except (errors.JobFileCorrupted, EnvironmentError): |
2015 | 0f9c08dc | Guido Trotter | logging.exception("Can't load/parse job %s", job_id)
|
2016 | 0f9c08dc | Guido Trotter | return None |
2017 | 0f9c08dc | Guido Trotter | |
2018 | 20571a26 | Guido Trotter | def _UpdateQueueSizeUnlocked(self): |
2019 | 20571a26 | Guido Trotter | """Update the queue size.
|
2020 | 20571a26 | Guido Trotter |
|
2021 | 20571a26 | Guido Trotter | """
|
2022 | 20571a26 | Guido Trotter | self._queue_size = len(self._GetJobIDsUnlocked(sort=False)) |
2023 | 20571a26 | Guido Trotter | |
2024 | ebb80afa | Guido Trotter | @locking.ssynchronized(_LOCK)
|
2025 | 20571a26 | Guido Trotter | @_RequireOpenQueue
|
2026 | 20571a26 | Guido Trotter | def SetDrainFlag(self, drain_flag): |
2027 | 3ccafd0e | Iustin Pop | """Sets the drain flag for the queue.
|
2028 | 3ccafd0e | Iustin Pop |
|
2029 | ea03467c | Iustin Pop | @type drain_flag: boolean
|
2030 | 5bbd3f7f | Michael Hanselmann | @param drain_flag: Whether to set or unset the drain flag
|
2031 | ea03467c | Iustin Pop |
|
2032 | 3ccafd0e | Iustin Pop | """
|
2033 | ff699aa9 | Michael Hanselmann | jstore.SetDrainFlag(drain_flag) |
2034 | 20571a26 | Guido Trotter | |
2035 | 20571a26 | Guido Trotter | self._drained = drain_flag
|
2036 | 20571a26 | Guido Trotter | |
2037 | 3ccafd0e | Iustin Pop | return True |
2038 | 3ccafd0e | Iustin Pop | |
2039 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
2040 | 009e73d0 | Iustin Pop | def _SubmitJobUnlocked(self, job_id, ops): |
2041 | 85f03e0d | Michael Hanselmann | """Create and store a new job.
|
2042 | f1da30e6 | Michael Hanselmann |
|
2043 | 85f03e0d | Michael Hanselmann | This enters the job into our job queue and also puts it on the new
|
2044 | 85f03e0d | Michael Hanselmann | queue, in order for it to be picked up by the queue processors.
|
2045 | c3f0a12f | Iustin Pop |
|
2046 | 009e73d0 | Iustin Pop | @type job_id: job ID
|
2047 | 69b99987 | Michael Hanselmann | @param job_id: the job ID for the new job
|
2048 | c3f0a12f | Iustin Pop | @type ops: list
|
2049 | 205d71fd | Michael Hanselmann | @param ops: The list of OpCodes that will become the new job.
|
2050 | 7beb1e53 | Guido Trotter | @rtype: L{_QueuedJob}
|
2051 | 7beb1e53 | Guido Trotter | @return: the job object to be queued
|
2052 | 7beb1e53 | Guido Trotter | @raise errors.JobQueueFull: if the job queue has too many jobs in it
|
2053 | e71c8147 | Michael Hanselmann | @raise errors.GenericError: If an opcode is not valid
|
2054 | c3f0a12f | Iustin Pop |
|
2055 | c3f0a12f | Iustin Pop | """
|
2056 | 20571a26 | Guido Trotter | if self._queue_size >= constants.JOB_QUEUE_SIZE_HARD_LIMIT: |
2057 | f87b405e | Michael Hanselmann | raise errors.JobQueueFull()
|
2058 | f87b405e | Michael Hanselmann | |
2059 | c0f6d0d8 | Michael Hanselmann | job = _QueuedJob(self, job_id, ops, True) |
2060 | f1da30e6 | Michael Hanselmann | |
2061 | e71c8147 | Michael Hanselmann | # Check priority
|
2062 | e71c8147 | Michael Hanselmann | for idx, op in enumerate(job.ops): |
2063 | e71c8147 | Michael Hanselmann | if op.priority not in constants.OP_PRIO_SUBMIT_VALID: |
2064 | e71c8147 | Michael Hanselmann | allowed = utils.CommaJoin(constants.OP_PRIO_SUBMIT_VALID) |
2065 | e71c8147 | Michael Hanselmann | raise errors.GenericError("Opcode %s has invalid priority %s, allowed" |
2066 | e71c8147 | Michael Hanselmann | " are %s" % (idx, op.priority, allowed))
|
2067 | e71c8147 | Michael Hanselmann | |
2068 | b247c6fc | Michael Hanselmann | dependencies = getattr(op.input, opcodes.DEPEND_ATTR, None) |
2069 | b247c6fc | Michael Hanselmann | if not opcodes.TNoRelativeJobDependencies(dependencies): |
2070 | b247c6fc | Michael Hanselmann | raise errors.GenericError("Opcode %s has invalid dependencies, must" |
2071 | b247c6fc | Michael Hanselmann | " match %s: %s" %
|
2072 | b247c6fc | Michael Hanselmann | (idx, opcodes.TNoRelativeJobDependencies, |
2073 | b247c6fc | Michael Hanselmann | dependencies)) |
2074 | b247c6fc | Michael Hanselmann | |
2075 | f1da30e6 | Michael Hanselmann | # Write to disk
|
2076 | 85f03e0d | Michael Hanselmann | self.UpdateJobUnlocked(job)
|
2077 | f1da30e6 | Michael Hanselmann | |
2078 | 20571a26 | Guido Trotter | self._queue_size += 1 |
2079 | 20571a26 | Guido Trotter | |
2080 | 5685c1a5 | Michael Hanselmann | logging.debug("Adding new job %s to the cache", job_id)
|
2081 | ac0930b9 | Iustin Pop | self._memcache[job_id] = job
|
2082 | ac0930b9 | Iustin Pop | |
2083 | 7beb1e53 | Guido Trotter | return job
|
2084 | f1da30e6 | Michael Hanselmann | |
2085 | ebb80afa | Guido Trotter | @locking.ssynchronized(_LOCK)
|
2086 | 2971c913 | Iustin Pop | @_RequireOpenQueue
|
2087 | c8d0be94 | Michael Hanselmann | @_RequireNonDrainedQueue
|
2088 | 2971c913 | Iustin Pop | def SubmitJob(self, ops): |
2089 | 2971c913 | Iustin Pop | """Create and store a new job.
|
2090 | 2971c913 | Iustin Pop |
|
2091 | 2971c913 | Iustin Pop | @see: L{_SubmitJobUnlocked}
|
2092 | 2971c913 | Iustin Pop |
|
2093 | 2971c913 | Iustin Pop | """
|
2094 | b247c6fc | Michael Hanselmann | (job_id, ) = self._NewSerialsUnlocked(1) |
2095 | 75d81fc8 | Michael Hanselmann | self._EnqueueJobsUnlocked([self._SubmitJobUnlocked(job_id, ops)]) |
2096 | 7beb1e53 | Guido Trotter | return job_id
|
2097 | 2971c913 | Iustin Pop | |
2098 | ebb80afa | Guido Trotter | @locking.ssynchronized(_LOCK)
|
2099 | 2971c913 | Iustin Pop | @_RequireOpenQueue
|
2100 | c8d0be94 | Michael Hanselmann | @_RequireNonDrainedQueue
|
2101 | 2971c913 | Iustin Pop | def SubmitManyJobs(self, jobs): |
2102 | 2971c913 | Iustin Pop | """Create and store multiple jobs.
|
2103 | 2971c913 | Iustin Pop |
|
2104 | 2971c913 | Iustin Pop | @see: L{_SubmitJobUnlocked}
|
2105 | 2971c913 | Iustin Pop |
|
2106 | 2971c913 | Iustin Pop | """
|
2107 | 009e73d0 | Iustin Pop | all_job_ids = self._NewSerialsUnlocked(len(jobs)) |
2108 | b247c6fc | Michael Hanselmann | |
2109 | b247c6fc | Michael Hanselmann | (results, added_jobs) = \ |
2110 | b247c6fc | Michael Hanselmann | self._SubmitManyJobsUnlocked(jobs, all_job_ids, [])
|
2111 | 7b5c4a69 | Michael Hanselmann | |
2112 | 75d81fc8 | Michael Hanselmann | self._EnqueueJobsUnlocked(added_jobs)
|
2113 | 2971c913 | Iustin Pop | |
2114 | 2971c913 | Iustin Pop | return results
|
2115 | 2971c913 | Iustin Pop | |
2116 | b247c6fc | Michael Hanselmann | @staticmethod
|
2117 | b247c6fc | Michael Hanselmann | def _FormatSubmitError(msg, ops): |
2118 | b247c6fc | Michael Hanselmann | """Formats errors which occurred while submitting a job.
|
2119 | b247c6fc | Michael Hanselmann |
|
2120 | b247c6fc | Michael Hanselmann | """
|
2121 | b247c6fc | Michael Hanselmann | return ("%s; opcodes %s" % |
2122 | b247c6fc | Michael Hanselmann | (msg, utils.CommaJoin(op.Summary() for op in ops))) |
2123 | b247c6fc | Michael Hanselmann | |
2124 | b247c6fc | Michael Hanselmann | @staticmethod
|
2125 | b247c6fc | Michael Hanselmann | def _ResolveJobDependencies(resolve_fn, deps): |
2126 | b247c6fc | Michael Hanselmann | """Resolves relative job IDs in dependencies.
|
2127 | b247c6fc | Michael Hanselmann |
|
2128 | b247c6fc | Michael Hanselmann | @type resolve_fn: callable
|
2129 | b247c6fc | Michael Hanselmann | @param resolve_fn: Function to resolve a relative job ID
|
2130 | b247c6fc | Michael Hanselmann | @type deps: list
|
2131 | b247c6fc | Michael Hanselmann | @param deps: Dependencies
|
2132 | b247c6fc | Michael Hanselmann | @rtype: list
|
2133 | b247c6fc | Michael Hanselmann | @return: Resolved dependencies
|
2134 | b247c6fc | Michael Hanselmann |
|
2135 | b247c6fc | Michael Hanselmann | """
|
2136 | b247c6fc | Michael Hanselmann | result = [] |
2137 | b247c6fc | Michael Hanselmann | |
2138 | b247c6fc | Michael Hanselmann | for (dep_job_id, dep_status) in deps: |
2139 | b247c6fc | Michael Hanselmann | if ht.TRelativeJobId(dep_job_id):
|
2140 | b247c6fc | Michael Hanselmann | assert ht.TInt(dep_job_id) and dep_job_id < 0 |
2141 | b247c6fc | Michael Hanselmann | try:
|
2142 | b247c6fc | Michael Hanselmann | job_id = resolve_fn(dep_job_id) |
2143 | b247c6fc | Michael Hanselmann | except IndexError: |
2144 | b247c6fc | Michael Hanselmann | # Abort
|
2145 | b247c6fc | Michael Hanselmann | return (False, "Unable to resolve relative job ID %s" % dep_job_id) |
2146 | b247c6fc | Michael Hanselmann | else:
|
2147 | b247c6fc | Michael Hanselmann | job_id = dep_job_id |
2148 | b247c6fc | Michael Hanselmann | |
2149 | b247c6fc | Michael Hanselmann | result.append((job_id, dep_status)) |
2150 | b247c6fc | Michael Hanselmann | |
2151 | b247c6fc | Michael Hanselmann | return (True, result) |
2152 | b247c6fc | Michael Hanselmann | |
2153 | b247c6fc | Michael Hanselmann | def _SubmitManyJobsUnlocked(self, jobs, job_ids, previous_job_ids): |
2154 | b247c6fc | Michael Hanselmann | """Create and store multiple jobs.
|
2155 | b247c6fc | Michael Hanselmann |
|
2156 | b247c6fc | Michael Hanselmann | @see: L{_SubmitJobUnlocked}
|
2157 | b247c6fc | Michael Hanselmann |
|
2158 | b247c6fc | Michael Hanselmann | """
|
2159 | b247c6fc | Michael Hanselmann | results = [] |
2160 | b247c6fc | Michael Hanselmann | added_jobs = [] |
2161 | b247c6fc | Michael Hanselmann | |
2162 | b247c6fc | Michael Hanselmann | def resolve_fn(job_idx, reljobid): |
2163 | b247c6fc | Michael Hanselmann | assert reljobid < 0 |
2164 | b247c6fc | Michael Hanselmann | return (previous_job_ids + job_ids[:job_idx])[reljobid]
|
2165 | b247c6fc | Michael Hanselmann | |
2166 | b247c6fc | Michael Hanselmann | for (idx, (job_id, ops)) in enumerate(zip(job_ids, jobs)): |
2167 | b247c6fc | Michael Hanselmann | for op in ops: |
2168 | b247c6fc | Michael Hanselmann | if getattr(op, opcodes.DEPEND_ATTR, None): |
2169 | b247c6fc | Michael Hanselmann | (status, data) = \ |
2170 | b247c6fc | Michael Hanselmann | self._ResolveJobDependencies(compat.partial(resolve_fn, idx),
|
2171 | b247c6fc | Michael Hanselmann | op.depends) |
2172 | b247c6fc | Michael Hanselmann | if not status: |
2173 | b247c6fc | Michael Hanselmann | # Abort resolving dependencies
|
2174 | b247c6fc | Michael Hanselmann | assert ht.TNonEmptyString(data), "No error message" |
2175 | b247c6fc | Michael Hanselmann | break
|
2176 | b247c6fc | Michael Hanselmann | # Use resolved dependencies
|
2177 | b247c6fc | Michael Hanselmann | op.depends = data |
2178 | b247c6fc | Michael Hanselmann | else:
|
2179 | b247c6fc | Michael Hanselmann | try:
|
2180 | b247c6fc | Michael Hanselmann | job = self._SubmitJobUnlocked(job_id, ops)
|
2181 | b247c6fc | Michael Hanselmann | except errors.GenericError, err:
|
2182 | b247c6fc | Michael Hanselmann | status = False
|
2183 | b247c6fc | Michael Hanselmann | data = self._FormatSubmitError(str(err), ops) |
2184 | b247c6fc | Michael Hanselmann | else:
|
2185 | b247c6fc | Michael Hanselmann | status = True
|
2186 | b247c6fc | Michael Hanselmann | data = job_id |
2187 | b247c6fc | Michael Hanselmann | added_jobs.append(job) |
2188 | b247c6fc | Michael Hanselmann | |
2189 | b247c6fc | Michael Hanselmann | results.append((status, data)) |
2190 | b247c6fc | Michael Hanselmann | |
2191 | b247c6fc | Michael Hanselmann | return (results, added_jobs)
|
2192 | b247c6fc | Michael Hanselmann | |
2193 | 75d81fc8 | Michael Hanselmann | @locking.ssynchronized(_LOCK)
|
2194 | 7b5c4a69 | Michael Hanselmann | def _EnqueueJobs(self, jobs): |
2195 | 7b5c4a69 | Michael Hanselmann | """Helper function to add jobs to worker pool's queue.
|
2196 | 7b5c4a69 | Michael Hanselmann |
|
2197 | 7b5c4a69 | Michael Hanselmann | @type jobs: list
|
2198 | 7b5c4a69 | Michael Hanselmann | @param jobs: List of all jobs
|
2199 | 7b5c4a69 | Michael Hanselmann |
|
2200 | 7b5c4a69 | Michael Hanselmann | """
|
2201 | 75d81fc8 | Michael Hanselmann | return self._EnqueueJobsUnlocked(jobs) |
2202 | 75d81fc8 | Michael Hanselmann | |
2203 | 75d81fc8 | Michael Hanselmann | def _EnqueueJobsUnlocked(self, jobs): |
2204 | 75d81fc8 | Michael Hanselmann | """Helper function to add jobs to worker pool's queue.
|
2205 | 75d81fc8 | Michael Hanselmann |
|
2206 | 75d81fc8 | Michael Hanselmann | @type jobs: list
|
2207 | 75d81fc8 | Michael Hanselmann | @param jobs: List of all jobs
|
2208 | 75d81fc8 | Michael Hanselmann |
|
2209 | 75d81fc8 | Michael Hanselmann | """
|
2210 | 75d81fc8 | Michael Hanselmann | assert self._lock.is_owned(shared=0), "Must own lock in exclusive mode" |
2211 | 7b5c4a69 | Michael Hanselmann | self._wpool.AddManyTasks([(job, ) for job in jobs], |
2212 | 7b5c4a69 | Michael Hanselmann | priority=[job.CalcPriority() for job in jobs]) |
2213 | 7b5c4a69 | Michael Hanselmann | |
2214 | b95479a5 | Michael Hanselmann | def _GetJobStatusForDependencies(self, job_id): |
2215 | b95479a5 | Michael Hanselmann | """Gets the status of a job for dependencies.
|
2216 | b95479a5 | Michael Hanselmann |
|
2217 | b95479a5 | Michael Hanselmann | @type job_id: string
|
2218 | b95479a5 | Michael Hanselmann | @param job_id: Job ID
|
2219 | b95479a5 | Michael Hanselmann | @raise errors.JobLost: If job can't be found
|
2220 | b95479a5 | Michael Hanselmann |
|
2221 | b95479a5 | Michael Hanselmann | """
|
2222 | b95479a5 | Michael Hanselmann | if not isinstance(job_id, basestring): |
2223 | b95479a5 | Michael Hanselmann | job_id = self._FormatJobID(job_id)
|
2224 | b95479a5 | Michael Hanselmann | |
2225 | b95479a5 | Michael Hanselmann | # Not using in-memory cache as doing so would require an exclusive lock
|
2226 | b95479a5 | Michael Hanselmann | |
2227 | b95479a5 | Michael Hanselmann | # Try to load from disk
|
2228 | c0f6d0d8 | Michael Hanselmann | job = self.SafeLoadJobFromDisk(job_id, True, writable=False) |
2229 | c0f6d0d8 | Michael Hanselmann | |
2230 | 17385bd2 | Andrea Spadaccini | assert not job.writable, "Got writable job" # pylint: disable=E1101 |
2231 | b95479a5 | Michael Hanselmann | |
2232 | b95479a5 | Michael Hanselmann | if job:
|
2233 | b95479a5 | Michael Hanselmann | return job.CalcStatus()
|
2234 | b95479a5 | Michael Hanselmann | |
2235 | b95479a5 | Michael Hanselmann | raise errors.JobLost("Job %s not found" % job_id) |
2236 | b95479a5 | Michael Hanselmann | |
2237 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
2238 | 4c36bdf5 | Guido Trotter | def UpdateJobUnlocked(self, job, replicate=True): |
2239 | ea03467c | Iustin Pop | """Update a job's on disk storage.
|
2240 | ea03467c | Iustin Pop |
|
2241 | ea03467c | Iustin Pop | After a job has been modified, this function needs to be called in
|
2242 | ea03467c | Iustin Pop | order to write the changes to disk and replicate them to the other
|
2243 | ea03467c | Iustin Pop | nodes.
|
2244 | ea03467c | Iustin Pop |
|
2245 | ea03467c | Iustin Pop | @type job: L{_QueuedJob}
|
2246 | ea03467c | Iustin Pop | @param job: the changed job
|
2247 | 4c36bdf5 | Guido Trotter | @type replicate: boolean
|
2248 | 4c36bdf5 | Guido Trotter | @param replicate: whether to replicate the change to remote nodes
|
2249 | ea03467c | Iustin Pop |
|
2250 | ea03467c | Iustin Pop | """
|
2251 | 66bd7445 | Michael Hanselmann | if __debug__:
|
2252 | 66bd7445 | Michael Hanselmann | finalized = job.CalcStatus() in constants.JOBS_FINALIZED
|
2253 | 66bd7445 | Michael Hanselmann | assert (finalized ^ (job.end_timestamp is None)) |
2254 | c0f6d0d8 | Michael Hanselmann | assert job.writable, "Can't update read-only job" |
2255 | 66bd7445 | Michael Hanselmann | |
2256 | f1da30e6 | Michael Hanselmann | filename = self._GetJobPath(job.id)
|
2257 | a182a3ed | Michael Hanselmann | data = serializer.DumpJson(job.Serialize()) |
2258 | f1da30e6 | Michael Hanselmann | logging.debug("Writing job %s to %s", job.id, filename)
|
2259 | 4c36bdf5 | Guido Trotter | self._UpdateJobQueueFile(filename, data, replicate)
|
2260 | ac0930b9 | Iustin Pop | |
2261 | 5c735209 | Iustin Pop | def WaitForJobChanges(self, job_id, fields, prev_job_info, prev_log_serial, |
2262 | 5c735209 | Iustin Pop | timeout): |
2263 | 6c5a7090 | Michael Hanselmann | """Waits for changes in a job.
|
2264 | 6c5a7090 | Michael Hanselmann |
|
2265 | 6c5a7090 | Michael Hanselmann | @type job_id: string
|
2266 | 6c5a7090 | Michael Hanselmann | @param job_id: Job identifier
|
2267 | 6c5a7090 | Michael Hanselmann | @type fields: list of strings
|
2268 | 6c5a7090 | Michael Hanselmann | @param fields: Which fields to check for changes
|
2269 | 6c5a7090 | Michael Hanselmann | @type prev_job_info: list or None
|
2270 | 6c5a7090 | Michael Hanselmann | @param prev_job_info: Last job information returned
|
2271 | 6c5a7090 | Michael Hanselmann | @type prev_log_serial: int
|
2272 | 6c5a7090 | Michael Hanselmann | @param prev_log_serial: Last job message serial number
|
2273 | 5c735209 | Iustin Pop | @type timeout: float
|
2274 | 989a8bee | Michael Hanselmann | @param timeout: maximum time to wait in seconds
|
2275 | ea03467c | Iustin Pop | @rtype: tuple (job info, log entries)
|
2276 | ea03467c | Iustin Pop | @return: a tuple of the job information as required via
|
2277 | ea03467c | Iustin Pop | the fields parameter, and the log entries as a list
|
2278 | ea03467c | Iustin Pop |
|
2279 | ea03467c | Iustin Pop | if the job has not changed and the timeout has expired,
|
2280 | ea03467c | Iustin Pop | we instead return a special value,
|
2281 | ea03467c | Iustin Pop | L{constants.JOB_NOTCHANGED}, which should be interpreted
|
2282 | ea03467c | Iustin Pop | as such by the clients
|
2283 | 6c5a7090 | Michael Hanselmann |
|
2284 | 6c5a7090 | Michael Hanselmann | """
|
2285 | c0f6d0d8 | Michael Hanselmann | load_fn = compat.partial(self.SafeLoadJobFromDisk, job_id, False, |
2286 | c0f6d0d8 | Michael Hanselmann | writable=False)
|
2287 | 989a8bee | Michael Hanselmann | |
2288 | 989a8bee | Michael Hanselmann | helper = _WaitForJobChangesHelper() |
2289 | 989a8bee | Michael Hanselmann | |
2290 | 989a8bee | Michael Hanselmann | return helper(self._GetJobPath(job_id), load_fn, |
2291 | 989a8bee | Michael Hanselmann | fields, prev_job_info, prev_log_serial, timeout) |
2292 | dfe57c22 | Michael Hanselmann | |
2293 | ebb80afa | Guido Trotter | @locking.ssynchronized(_LOCK)
|
2294 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
2295 | 188c5e0a | Michael Hanselmann | def CancelJob(self, job_id): |
2296 | 188c5e0a | Michael Hanselmann | """Cancels a job.
|
2297 | 188c5e0a | Michael Hanselmann |
|
2298 | ea03467c | Iustin Pop | This will only succeed if the job has not started yet.
|
2299 | ea03467c | Iustin Pop |
|
2300 | 188c5e0a | Michael Hanselmann | @type job_id: string
|
2301 | ea03467c | Iustin Pop | @param job_id: job ID of job to be cancelled.
|
2302 | 188c5e0a | Michael Hanselmann |
|
2303 | 188c5e0a | Michael Hanselmann | """
|
2304 | fbf0262f | Michael Hanselmann | logging.info("Cancelling job %s", job_id)
|
2305 | 188c5e0a | Michael Hanselmann | |
2306 | 85f03e0d | Michael Hanselmann | job = self._LoadJobUnlocked(job_id)
|
2307 | 188c5e0a | Michael Hanselmann | if not job: |
2308 | 188c5e0a | Michael Hanselmann | logging.debug("Job %s not found", job_id)
|
2309 | fbf0262f | Michael Hanselmann | return (False, "Job %s not found" % job_id) |
2310 | fbf0262f | Michael Hanselmann | |
2311 | c0f6d0d8 | Michael Hanselmann | assert job.writable, "Can't cancel read-only job" |
2312 | c0f6d0d8 | Michael Hanselmann | |
2313 | 099b2870 | Michael Hanselmann | (success, msg) = job.Cancel() |
2314 | 188c5e0a | Michael Hanselmann | |
2315 | 099b2870 | Michael Hanselmann | if success:
|
2316 | 66bd7445 | Michael Hanselmann | # If the job was finalized (e.g. cancelled), this is the final write
|
2317 | 66bd7445 | Michael Hanselmann | # allowed. The job can be archived anytime.
|
2318 | 099b2870 | Michael Hanselmann | self.UpdateJobUnlocked(job)
|
2319 | fbf0262f | Michael Hanselmann | |
2320 | 099b2870 | Michael Hanselmann | return (success, msg)
|
2321 | fbf0262f | Michael Hanselmann | |
2322 | fbf0262f | Michael Hanselmann | @_RequireOpenQueue
|
2323 | d7fd1f28 | Michael Hanselmann | def _ArchiveJobsUnlocked(self, jobs): |
2324 | d7fd1f28 | Michael Hanselmann | """Archives jobs.
|
2325 | c609f802 | Michael Hanselmann |
|
2326 | d7fd1f28 | Michael Hanselmann | @type jobs: list of L{_QueuedJob}
|
2327 | 25e7b43f | Iustin Pop | @param jobs: Job objects
|
2328 | d7fd1f28 | Michael Hanselmann | @rtype: int
|
2329 | d7fd1f28 | Michael Hanselmann | @return: Number of archived jobs
|
2330 | c609f802 | Michael Hanselmann |
|
2331 | c609f802 | Michael Hanselmann | """
|
2332 | d7fd1f28 | Michael Hanselmann | archive_jobs = [] |
2333 | d7fd1f28 | Michael Hanselmann | rename_files = [] |
2334 | d7fd1f28 | Michael Hanselmann | for job in jobs: |
2335 | c0f6d0d8 | Michael Hanselmann | assert job.writable, "Can't archive read-only job" |
2336 | c0f6d0d8 | Michael Hanselmann | |
2337 | 989a8bee | Michael Hanselmann | if job.CalcStatus() not in constants.JOBS_FINALIZED: |
2338 | d7fd1f28 | Michael Hanselmann | logging.debug("Job %s is not yet done", job.id)
|
2339 | d7fd1f28 | Michael Hanselmann | continue
|
2340 | c609f802 | Michael Hanselmann | |
2341 | d7fd1f28 | Michael Hanselmann | archive_jobs.append(job) |
2342 | c609f802 | Michael Hanselmann | |
2343 | d7fd1f28 | Michael Hanselmann | old = self._GetJobPath(job.id)
|
2344 | d7fd1f28 | Michael Hanselmann | new = self._GetArchivedJobPath(job.id)
|
2345 | d7fd1f28 | Michael Hanselmann | rename_files.append((old, new)) |
2346 | c609f802 | Michael Hanselmann | |
2347 | d7fd1f28 | Michael Hanselmann | # TODO: What if 1..n files fail to rename?
|
2348 | d7fd1f28 | Michael Hanselmann | self._RenameFilesUnlocked(rename_files)
|
2349 | f1da30e6 | Michael Hanselmann | |
2350 | d7fd1f28 | Michael Hanselmann | logging.debug("Successfully archived job(s) %s",
|
2351 | 1f864b60 | Iustin Pop | utils.CommaJoin(job.id for job in archive_jobs)) |
2352 | d7fd1f28 | Michael Hanselmann | |
2353 | 20571a26 | Guido Trotter | # Since we haven't quite checked, above, if we succeeded or failed renaming
|
2354 | 20571a26 | Guido Trotter | # the files, we update the cached queue size from the filesystem. When we
|
2355 | 20571a26 | Guido Trotter | # get around to fix the TODO: above, we can use the number of actually
|
2356 | 20571a26 | Guido Trotter | # archived jobs to fix this.
|
2357 | 20571a26 | Guido Trotter | self._UpdateQueueSizeUnlocked()
|
2358 | d7fd1f28 | Michael Hanselmann | return len(archive_jobs) |
2359 | 78d12585 | Michael Hanselmann | |
2360 | ebb80afa | Guido Trotter | @locking.ssynchronized(_LOCK)
|
2361 | 07cd723a | Iustin Pop | @_RequireOpenQueue
|
2362 | 07cd723a | Iustin Pop | def ArchiveJob(self, job_id): |
2363 | 07cd723a | Iustin Pop | """Archives a job.
|
2364 | 07cd723a | Iustin Pop |
|
2365 | 25e7b43f | Iustin Pop | This is just a wrapper over L{_ArchiveJobsUnlocked}.
|
2366 | ea03467c | Iustin Pop |
|
2367 | 07cd723a | Iustin Pop | @type job_id: string
|
2368 | 07cd723a | Iustin Pop | @param job_id: Job ID of job to be archived.
|
2369 | 78d12585 | Michael Hanselmann | @rtype: bool
|
2370 | 78d12585 | Michael Hanselmann | @return: Whether job was archived
|
2371 | 07cd723a | Iustin Pop |
|
2372 | 07cd723a | Iustin Pop | """
|
2373 | 78d12585 | Michael Hanselmann | logging.info("Archiving job %s", job_id)
|
2374 | 78d12585 | Michael Hanselmann | |
2375 | 78d12585 | Michael Hanselmann | job = self._LoadJobUnlocked(job_id)
|
2376 | 78d12585 | Michael Hanselmann | if not job: |
2377 | 78d12585 | Michael Hanselmann | logging.debug("Job %s not found", job_id)
|
2378 | 78d12585 | Michael Hanselmann | return False |
2379 | 78d12585 | Michael Hanselmann | |
2380 | 5278185a | Iustin Pop | return self._ArchiveJobsUnlocked([job]) == 1 |
2381 | 07cd723a | Iustin Pop | |
2382 | ebb80afa | Guido Trotter | @locking.ssynchronized(_LOCK)
|
2383 | 07cd723a | Iustin Pop | @_RequireOpenQueue
|
2384 | f8ad5591 | Michael Hanselmann | def AutoArchiveJobs(self, age, timeout): |
2385 | 07cd723a | Iustin Pop | """Archives all jobs based on age.
|
2386 | 07cd723a | Iustin Pop |
|
2387 | 07cd723a | Iustin Pop | The method will archive all jobs which are older than the age
|
2388 | 07cd723a | Iustin Pop | parameter. For jobs that don't have an end timestamp, the start
|
2389 | 07cd723a | Iustin Pop | timestamp will be considered. The special '-1' age will cause
|
2390 | 07cd723a | Iustin Pop | archival of all jobs (that are not running or queued).
|
2391 | 07cd723a | Iustin Pop |
|
2392 | 07cd723a | Iustin Pop | @type age: int
|
2393 | 07cd723a | Iustin Pop | @param age: the minimum age in seconds
|
2394 | 07cd723a | Iustin Pop |
|
2395 | 07cd723a | Iustin Pop | """
|
2396 | 07cd723a | Iustin Pop | logging.info("Archiving jobs with age more than %s seconds", age)
|
2397 | 07cd723a | Iustin Pop | |
2398 | 07cd723a | Iustin Pop | now = time.time() |
2399 | f8ad5591 | Michael Hanselmann | end_time = now + timeout |
2400 | f8ad5591 | Michael Hanselmann | archived_count = 0
|
2401 | f8ad5591 | Michael Hanselmann | last_touched = 0
|
2402 | f8ad5591 | Michael Hanselmann | |
2403 | 69b03fd7 | Guido Trotter | all_job_ids = self._GetJobIDsUnlocked()
|
2404 | d7fd1f28 | Michael Hanselmann | pending = [] |
2405 | f8ad5591 | Michael Hanselmann | for idx, job_id in enumerate(all_job_ids): |
2406 | d2c8afb1 | Michael Hanselmann | last_touched = idx + 1
|
2407 | f8ad5591 | Michael Hanselmann | |
2408 | d7fd1f28 | Michael Hanselmann | # Not optimal because jobs could be pending
|
2409 | d7fd1f28 | Michael Hanselmann | # TODO: Measure average duration for job archival and take number of
|
2410 | d7fd1f28 | Michael Hanselmann | # pending jobs into account.
|
2411 | f8ad5591 | Michael Hanselmann | if time.time() > end_time:
|
2412 | f8ad5591 | Michael Hanselmann | break
|
2413 | f8ad5591 | Michael Hanselmann | |
2414 | 78d12585 | Michael Hanselmann | # Returns None if the job failed to load
|
2415 | 78d12585 | Michael Hanselmann | job = self._LoadJobUnlocked(job_id)
|
2416 | f8ad5591 | Michael Hanselmann | if job:
|
2417 | f8ad5591 | Michael Hanselmann | if job.end_timestamp is None: |
2418 | f8ad5591 | Michael Hanselmann | if job.start_timestamp is None: |
2419 | f8ad5591 | Michael Hanselmann | job_age = job.received_timestamp |
2420 | f8ad5591 | Michael Hanselmann | else:
|
2421 | f8ad5591 | Michael Hanselmann | job_age = job.start_timestamp |
2422 | 07cd723a | Iustin Pop | else:
|
2423 | f8ad5591 | Michael Hanselmann | job_age = job.end_timestamp |
2424 | f8ad5591 | Michael Hanselmann | |
2425 | f8ad5591 | Michael Hanselmann | if age == -1 or now - job_age[0] > age: |
2426 | d7fd1f28 | Michael Hanselmann | pending.append(job) |
2427 | d7fd1f28 | Michael Hanselmann | |
2428 | d7fd1f28 | Michael Hanselmann | # Archive 10 jobs at a time
|
2429 | d7fd1f28 | Michael Hanselmann | if len(pending) >= 10: |
2430 | d7fd1f28 | Michael Hanselmann | archived_count += self._ArchiveJobsUnlocked(pending)
|
2431 | d7fd1f28 | Michael Hanselmann | pending = [] |
2432 | f8ad5591 | Michael Hanselmann | |
2433 | d7fd1f28 | Michael Hanselmann | if pending:
|
2434 | d7fd1f28 | Michael Hanselmann | archived_count += self._ArchiveJobsUnlocked(pending)
|
2435 | 07cd723a | Iustin Pop | |
2436 | d2c8afb1 | Michael Hanselmann | return (archived_count, len(all_job_ids) - last_touched) |
2437 | 07cd723a | Iustin Pop | |
2438 | e07f7f7a | Michael Hanselmann | def _Query(self, fields, qfilter): |
2439 | e07f7f7a | Michael Hanselmann | qobj = query.Query(query.JOB_FIELDS, fields, qfilter=qfilter, |
2440 | e07f7f7a | Michael Hanselmann | namefield="id")
|
2441 | e07f7f7a | Michael Hanselmann | |
2442 | e07f7f7a | Michael Hanselmann | job_ids = qobj.RequestedNames() |
2443 | e07f7f7a | Michael Hanselmann | |
2444 | e07f7f7a | Michael Hanselmann | list_all = (job_ids is None) |
2445 | e07f7f7a | Michael Hanselmann | |
2446 | e07f7f7a | Michael Hanselmann | if list_all:
|
2447 | e07f7f7a | Michael Hanselmann | # Since files are added to/removed from the queue atomically, there's no
|
2448 | e07f7f7a | Michael Hanselmann | # risk of getting the job ids in an inconsistent state.
|
2449 | e07f7f7a | Michael Hanselmann | job_ids = self._GetJobIDsUnlocked()
|
2450 | e07f7f7a | Michael Hanselmann | |
2451 | e07f7f7a | Michael Hanselmann | jobs = [] |
2452 | e07f7f7a | Michael Hanselmann | |
2453 | e07f7f7a | Michael Hanselmann | for job_id in job_ids: |
2454 | e07f7f7a | Michael Hanselmann | job = self.SafeLoadJobFromDisk(job_id, True, writable=False) |
2455 | e07f7f7a | Michael Hanselmann | if job is not None or not list_all: |
2456 | e07f7f7a | Michael Hanselmann | jobs.append((job_id, job)) |
2457 | e07f7f7a | Michael Hanselmann | |
2458 | e07f7f7a | Michael Hanselmann | return (qobj, jobs, list_all)
|
2459 | e07f7f7a | Michael Hanselmann | |
2460 | e07f7f7a | Michael Hanselmann | def QueryJobs(self, fields, qfilter): |
2461 | e07f7f7a | Michael Hanselmann | """Returns a list of jobs in queue.
|
2462 | e07f7f7a | Michael Hanselmann |
|
2463 | e07f7f7a | Michael Hanselmann | @type fields: sequence
|
2464 | e07f7f7a | Michael Hanselmann | @param fields: List of wanted fields
|
2465 | e07f7f7a | Michael Hanselmann | @type qfilter: None or query2 filter (list)
|
2466 | e07f7f7a | Michael Hanselmann | @param qfilter: Query filter
|
2467 | e07f7f7a | Michael Hanselmann |
|
2468 | e07f7f7a | Michael Hanselmann | """
|
2469 | e07f7f7a | Michael Hanselmann | (qobj, ctx, sort_by_name) = self._Query(fields, qfilter)
|
2470 | e07f7f7a | Michael Hanselmann | |
2471 | e07f7f7a | Michael Hanselmann | return query.GetQueryResponse(qobj, ctx, sort_by_name=sort_by_name)
|
2472 | e07f7f7a | Michael Hanselmann | |
2473 | e07f7f7a | Michael Hanselmann | def OldStyleQueryJobs(self, job_ids, fields): |
2474 | e2715f69 | Michael Hanselmann | """Returns a list of jobs in queue.
|
2475 | e2715f69 | Michael Hanselmann |
|
2476 | ea03467c | Iustin Pop | @type job_ids: list
|
2477 | ea03467c | Iustin Pop | @param job_ids: sequence of job identifiers or None for all
|
2478 | ea03467c | Iustin Pop | @type fields: list
|
2479 | ea03467c | Iustin Pop | @param fields: names of fields to return
|
2480 | ea03467c | Iustin Pop | @rtype: list
|
2481 | ea03467c | Iustin Pop | @return: list one element per job, each element being list with
|
2482 | ea03467c | Iustin Pop | the requested fields
|
2483 | e2715f69 | Michael Hanselmann |
|
2484 | e2715f69 | Michael Hanselmann | """
|
2485 | e07f7f7a | Michael Hanselmann | qfilter = qlang.MakeSimpleFilter("id", job_ids)
|
2486 | e2715f69 | Michael Hanselmann | |
2487 | e07f7f7a | Michael Hanselmann | (qobj, ctx, sort_by_name) = self._Query(fields, qfilter)
|
2488 | e2715f69 | Michael Hanselmann | |
2489 | e07f7f7a | Michael Hanselmann | return qobj.OldStyleQuery(ctx, sort_by_name=sort_by_name)
|
2490 | e2715f69 | Michael Hanselmann | |
2491 | ebb80afa | Guido Trotter | @locking.ssynchronized(_LOCK)
|
2492 | 6d5ea385 | Michael Hanselmann | def PrepareShutdown(self): |
2493 | 6d5ea385 | Michael Hanselmann | """Prepare to stop the job queue.
|
2494 | 6d5ea385 | Michael Hanselmann |
|
2495 | 6d5ea385 | Michael Hanselmann | Disables execution of jobs in the workerpool and returns whether there are
|
2496 | 6d5ea385 | Michael Hanselmann | any jobs currently running. If the latter is the case, the job queue is not
|
2497 | 6d5ea385 | Michael Hanselmann | yet ready for shutdown. Once this function returns C{True} L{Shutdown} can
|
2498 | 6d5ea385 | Michael Hanselmann | be called without interfering with any job. Queued and unfinished jobs will
|
2499 | 6d5ea385 | Michael Hanselmann | be resumed next time.
|
2500 | 6d5ea385 | Michael Hanselmann |
|
2501 | 6d5ea385 | Michael Hanselmann | Once this function has been called no new job submissions will be accepted
|
2502 | 6d5ea385 | Michael Hanselmann | (see L{_RequireNonDrainedQueue}).
|
2503 | 6d5ea385 | Michael Hanselmann |
|
2504 | 6d5ea385 | Michael Hanselmann | @rtype: bool
|
2505 | 6d5ea385 | Michael Hanselmann | @return: Whether there are any running jobs
|
2506 | 6d5ea385 | Michael Hanselmann |
|
2507 | 6d5ea385 | Michael Hanselmann | """
|
2508 | 6d5ea385 | Michael Hanselmann | if self._accepting_jobs: |
2509 | 6d5ea385 | Michael Hanselmann | self._accepting_jobs = False |
2510 | 6d5ea385 | Michael Hanselmann | |
2511 | 6d5ea385 | Michael Hanselmann | # Tell worker pool to stop processing pending tasks
|
2512 | 6d5ea385 | Michael Hanselmann | self._wpool.SetActive(False) |
2513 | 6d5ea385 | Michael Hanselmann | |
2514 | 6d5ea385 | Michael Hanselmann | return self._wpool.HasRunningTasks() |
2515 | 6d5ea385 | Michael Hanselmann | |
2516 | 6d5ea385 | Michael Hanselmann | @locking.ssynchronized(_LOCK)
|
2517 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
2518 | e2715f69 | Michael Hanselmann | def Shutdown(self): |
2519 | e2715f69 | Michael Hanselmann | """Stops the job queue.
|
2520 | e2715f69 | Michael Hanselmann |
|
2521 | ea03467c | Iustin Pop | This shutdowns all the worker threads an closes the queue.
|
2522 | ea03467c | Iustin Pop |
|
2523 | e2715f69 | Michael Hanselmann | """
|
2524 | e2715f69 | Michael Hanselmann | self._wpool.TerminateWorkers()
|
2525 | 85f03e0d | Michael Hanselmann | |
2526 | a71f9c7d | Guido Trotter | self._queue_filelock.Close()
|
2527 | a71f9c7d | Guido Trotter | self._queue_filelock = None |