root / lib / jqueue.py @ 1f587d3d
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2 | 498ae1cc | Iustin Pop | #
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3 | 498ae1cc | Iustin Pop | |
4 | 5685c1a5 | Michael Hanselmann | # Copyright (C) 2006, 2007, 2008 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 | f1da30e6 | Michael Hanselmann | import os |
33 | e2715f69 | Michael Hanselmann | import logging |
34 | e2715f69 | Michael Hanselmann | import threading |
35 | f1da30e6 | Michael Hanselmann | import errno |
36 | f1da30e6 | Michael Hanselmann | import re |
37 | f1048938 | Iustin Pop | import time |
38 | 5685c1a5 | Michael Hanselmann | import weakref |
39 | 498ae1cc | Iustin Pop | |
40 | e2715f69 | Michael Hanselmann | from ganeti import constants |
41 | f1da30e6 | Michael Hanselmann | from ganeti import serializer |
42 | e2715f69 | Michael Hanselmann | from ganeti import workerpool |
43 | f1da30e6 | Michael Hanselmann | from ganeti import opcodes |
44 | 7a1ecaed | Iustin Pop | from ganeti import errors |
45 | e2715f69 | Michael Hanselmann | from ganeti import mcpu |
46 | 7996a135 | Iustin Pop | from ganeti import utils |
47 | 04ab05ce | Michael Hanselmann | from ganeti import jstore |
48 | c3f0a12f | Iustin Pop | from ganeti import rpc |
49 | e2715f69 | Michael Hanselmann | |
50 | fbf0262f | Michael Hanselmann | |
51 | 1daae384 | Iustin Pop | JOBQUEUE_THREADS = 25
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52 | 58b22b6e | Michael Hanselmann | JOBS_PER_ARCHIVE_DIRECTORY = 10000
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53 | e2715f69 | Michael Hanselmann | |
54 | 498ae1cc | Iustin Pop | |
55 | 9728ae5d | Iustin Pop | class CancelJob(Exception): |
56 | fbf0262f | Michael Hanselmann | """Special exception to cancel a job.
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57 | fbf0262f | Michael Hanselmann |
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58 | fbf0262f | Michael Hanselmann | """
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59 | fbf0262f | Michael Hanselmann | |
60 | fbf0262f | Michael Hanselmann | |
61 | 70552c46 | Michael Hanselmann | def TimeStampNow(): |
62 | ea03467c | Iustin Pop | """Returns the current timestamp.
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63 | ea03467c | Iustin Pop |
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64 | ea03467c | Iustin Pop | @rtype: tuple
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65 | ea03467c | Iustin Pop | @return: the current time in the (seconds, microseconds) format
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66 | ea03467c | Iustin Pop |
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67 | ea03467c | Iustin Pop | """
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68 | 70552c46 | Michael Hanselmann | return utils.SplitTime(time.time())
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69 | 70552c46 | Michael Hanselmann | |
70 | 70552c46 | Michael Hanselmann | |
71 | e2715f69 | Michael Hanselmann | class _QueuedOpCode(object): |
72 | 5bbd3f7f | Michael Hanselmann | """Encapsulates an opcode object.
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73 | e2715f69 | Michael Hanselmann |
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74 | ea03467c | Iustin Pop | @ivar log: holds the execution log and consists of tuples
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75 | ea03467c | Iustin Pop | of the form C{(log_serial, timestamp, level, message)}
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76 | ea03467c | Iustin Pop | @ivar input: the OpCode we encapsulate
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77 | ea03467c | Iustin Pop | @ivar status: the current status
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78 | ea03467c | Iustin Pop | @ivar result: the result of the LU execution
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79 | ea03467c | Iustin Pop | @ivar start_timestamp: timestamp for the start of the execution
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80 | ea03467c | Iustin Pop | @ivar stop_timestamp: timestamp for the end of the execution
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81 | f1048938 | Iustin Pop |
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82 | e2715f69 | Michael Hanselmann | """
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83 | 66d895a8 | Iustin Pop | __slots__ = ["input", "status", "result", "log", |
84 | 66d895a8 | Iustin Pop | "start_timestamp", "end_timestamp", |
85 | 66d895a8 | Iustin Pop | "__weakref__"]
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86 | 66d895a8 | Iustin Pop | |
87 | 85f03e0d | Michael Hanselmann | def __init__(self, op): |
88 | ea03467c | Iustin Pop | """Constructor for the _QuededOpCode.
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89 | ea03467c | Iustin Pop |
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90 | ea03467c | Iustin Pop | @type op: L{opcodes.OpCode}
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91 | ea03467c | Iustin Pop | @param op: the opcode we encapsulate
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92 | ea03467c | Iustin Pop |
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93 | ea03467c | Iustin Pop | """
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94 | 85f03e0d | Michael Hanselmann | self.input = op
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95 | 85f03e0d | Michael Hanselmann | self.status = constants.OP_STATUS_QUEUED
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96 | 85f03e0d | Michael Hanselmann | self.result = None |
97 | 85f03e0d | Michael Hanselmann | self.log = []
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98 | 70552c46 | Michael Hanselmann | self.start_timestamp = None |
99 | 70552c46 | Michael Hanselmann | self.end_timestamp = None |
100 | f1da30e6 | Michael Hanselmann | |
101 | f1da30e6 | Michael Hanselmann | @classmethod
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102 | f1da30e6 | Michael Hanselmann | def Restore(cls, state): |
103 | ea03467c | Iustin Pop | """Restore the _QueuedOpCode from the serialized form.
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104 | ea03467c | Iustin Pop |
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105 | ea03467c | Iustin Pop | @type state: dict
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106 | ea03467c | Iustin Pop | @param state: the serialized state
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107 | ea03467c | Iustin Pop | @rtype: _QueuedOpCode
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108 | ea03467c | Iustin Pop | @return: a new _QueuedOpCode instance
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109 | ea03467c | Iustin Pop |
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110 | ea03467c | Iustin Pop | """
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111 | 85f03e0d | Michael Hanselmann | obj = _QueuedOpCode.__new__(cls) |
112 | 85f03e0d | Michael Hanselmann | obj.input = opcodes.OpCode.LoadOpCode(state["input"])
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113 | 85f03e0d | Michael Hanselmann | obj.status = state["status"]
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114 | 85f03e0d | Michael Hanselmann | obj.result = state["result"]
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115 | 85f03e0d | Michael Hanselmann | obj.log = state["log"]
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116 | 70552c46 | Michael Hanselmann | obj.start_timestamp = state.get("start_timestamp", None) |
117 | 70552c46 | Michael Hanselmann | obj.end_timestamp = state.get("end_timestamp", None) |
118 | f1da30e6 | Michael Hanselmann | return obj
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119 | f1da30e6 | Michael Hanselmann | |
120 | f1da30e6 | Michael Hanselmann | def Serialize(self): |
121 | ea03467c | Iustin Pop | """Serializes this _QueuedOpCode.
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122 | ea03467c | Iustin Pop |
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123 | ea03467c | Iustin Pop | @rtype: dict
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124 | ea03467c | Iustin Pop | @return: the dictionary holding the serialized state
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125 | ea03467c | Iustin Pop |
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126 | ea03467c | Iustin Pop | """
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127 | 6c5a7090 | Michael Hanselmann | return {
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128 | 6c5a7090 | Michael Hanselmann | "input": self.input.__getstate__(), |
129 | 6c5a7090 | Michael Hanselmann | "status": self.status, |
130 | 6c5a7090 | Michael Hanselmann | "result": self.result, |
131 | 6c5a7090 | Michael Hanselmann | "log": self.log, |
132 | 70552c46 | Michael Hanselmann | "start_timestamp": self.start_timestamp, |
133 | 70552c46 | Michael Hanselmann | "end_timestamp": self.end_timestamp, |
134 | 6c5a7090 | Michael Hanselmann | } |
135 | f1048938 | Iustin Pop | |
136 | e2715f69 | Michael Hanselmann | |
137 | e2715f69 | Michael Hanselmann | class _QueuedJob(object): |
138 | e2715f69 | Michael Hanselmann | """In-memory job representation.
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139 | e2715f69 | Michael Hanselmann |
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140 | ea03467c | Iustin Pop | This is what we use to track the user-submitted jobs. Locking must
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141 | ea03467c | Iustin Pop | be taken care of by users of this class.
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142 | ea03467c | Iustin Pop |
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143 | ea03467c | Iustin Pop | @type queue: L{JobQueue}
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144 | ea03467c | Iustin Pop | @ivar queue: the parent queue
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145 | ea03467c | Iustin Pop | @ivar id: the job ID
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146 | ea03467c | Iustin Pop | @type ops: list
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147 | ea03467c | Iustin Pop | @ivar ops: the list of _QueuedOpCode that constitute the job
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148 | ea03467c | Iustin Pop | @type log_serial: int
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149 | ea03467c | Iustin Pop | @ivar log_serial: holds the index for the next log entry
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150 | ea03467c | Iustin Pop | @ivar received_timestamp: the timestamp for when the job was received
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151 | ea03467c | Iustin Pop | @ivar start_timestmap: the timestamp for start of execution
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152 | ea03467c | Iustin Pop | @ivar end_timestamp: the timestamp for end of execution
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153 | ef2df7d3 | Michael Hanselmann | @ivar lock_status: In-memory locking information for debugging
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154 | ea03467c | Iustin Pop | @ivar change: a Condition variable we use for waiting for job changes
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155 | e2715f69 | Michael Hanselmann |
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156 | e2715f69 | Michael Hanselmann | """
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157 | d25c1d6a | Michael Hanselmann | __slots__ = ["queue", "id", "ops", "log_serial", |
158 | 66d895a8 | Iustin Pop | "received_timestamp", "start_timestamp", "end_timestamp", |
159 | ef2df7d3 | Michael Hanselmann | "lock_status", "change", |
160 | 66d895a8 | Iustin Pop | "__weakref__"]
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161 | 66d895a8 | Iustin Pop | |
162 | 85f03e0d | Michael Hanselmann | def __init__(self, queue, job_id, ops): |
163 | ea03467c | Iustin Pop | """Constructor for the _QueuedJob.
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164 | ea03467c | Iustin Pop |
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165 | ea03467c | Iustin Pop | @type queue: L{JobQueue}
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166 | ea03467c | Iustin Pop | @param queue: our parent queue
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167 | ea03467c | Iustin Pop | @type job_id: job_id
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168 | ea03467c | Iustin Pop | @param job_id: our job id
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169 | ea03467c | Iustin Pop | @type ops: list
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170 | ea03467c | Iustin Pop | @param ops: the list of opcodes we hold, which will be encapsulated
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171 | ea03467c | Iustin Pop | in _QueuedOpCodes
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172 | ea03467c | Iustin Pop |
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173 | ea03467c | Iustin Pop | """
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174 | e2715f69 | Michael Hanselmann | if not ops: |
175 | ea03467c | Iustin Pop | # TODO: use a better exception
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176 | e2715f69 | Michael Hanselmann | raise Exception("No opcodes") |
177 | e2715f69 | Michael Hanselmann | |
178 | 85f03e0d | Michael Hanselmann | self.queue = queue
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179 | f1da30e6 | Michael Hanselmann | self.id = job_id
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180 | 85f03e0d | Michael Hanselmann | self.ops = [_QueuedOpCode(op) for op in ops] |
181 | 6c5a7090 | Michael Hanselmann | self.log_serial = 0 |
182 | c56ec146 | Iustin Pop | self.received_timestamp = TimeStampNow()
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183 | c56ec146 | Iustin Pop | self.start_timestamp = None |
184 | c56ec146 | Iustin Pop | self.end_timestamp = None |
185 | 6c5a7090 | Michael Hanselmann | |
186 | ef2df7d3 | Michael Hanselmann | # In-memory attributes
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187 | ef2df7d3 | Michael Hanselmann | self.lock_status = None |
188 | ef2df7d3 | Michael Hanselmann | |
189 | 6c5a7090 | Michael Hanselmann | # Condition to wait for changes
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190 | 6c5a7090 | Michael Hanselmann | self.change = threading.Condition(self.queue._lock) |
191 | f1da30e6 | Michael Hanselmann | |
192 | f1da30e6 | Michael Hanselmann | @classmethod
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193 | 85f03e0d | Michael Hanselmann | def Restore(cls, queue, state): |
194 | ea03467c | Iustin Pop | """Restore a _QueuedJob from serialized state:
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195 | ea03467c | Iustin Pop |
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196 | ea03467c | Iustin Pop | @type queue: L{JobQueue}
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197 | ea03467c | Iustin Pop | @param queue: to which queue the restored job belongs
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198 | ea03467c | Iustin Pop | @type state: dict
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199 | ea03467c | Iustin Pop | @param state: the serialized state
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200 | ea03467c | Iustin Pop | @rtype: _JobQueue
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201 | ea03467c | Iustin Pop | @return: the restored _JobQueue instance
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202 | ea03467c | Iustin Pop |
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203 | ea03467c | Iustin Pop | """
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204 | 85f03e0d | Michael Hanselmann | obj = _QueuedJob.__new__(cls) |
205 | 85f03e0d | Michael Hanselmann | obj.queue = queue |
206 | 85f03e0d | Michael Hanselmann | obj.id = state["id"]
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207 | c56ec146 | Iustin Pop | obj.received_timestamp = state.get("received_timestamp", None) |
208 | c56ec146 | Iustin Pop | obj.start_timestamp = state.get("start_timestamp", None) |
209 | c56ec146 | Iustin Pop | obj.end_timestamp = state.get("end_timestamp", None) |
210 | 6c5a7090 | Michael Hanselmann | |
211 | ef2df7d3 | Michael Hanselmann | # In-memory attributes
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212 | ef2df7d3 | Michael Hanselmann | obj.lock_status = None
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213 | ef2df7d3 | Michael Hanselmann | |
214 | 6c5a7090 | Michael Hanselmann | obj.ops = [] |
215 | 6c5a7090 | Michael Hanselmann | obj.log_serial = 0
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216 | 6c5a7090 | Michael Hanselmann | for op_state in state["ops"]: |
217 | 6c5a7090 | Michael Hanselmann | op = _QueuedOpCode.Restore(op_state) |
218 | 6c5a7090 | Michael Hanselmann | for log_entry in op.log: |
219 | 6c5a7090 | Michael Hanselmann | obj.log_serial = max(obj.log_serial, log_entry[0]) |
220 | 6c5a7090 | Michael Hanselmann | obj.ops.append(op) |
221 | 6c5a7090 | Michael Hanselmann | |
222 | 6c5a7090 | Michael Hanselmann | # Condition to wait for changes
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223 | 6c5a7090 | Michael Hanselmann | obj.change = threading.Condition(obj.queue._lock) |
224 | 6c5a7090 | Michael Hanselmann | |
225 | f1da30e6 | Michael Hanselmann | return obj
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226 | f1da30e6 | Michael Hanselmann | |
227 | f1da30e6 | Michael Hanselmann | def Serialize(self): |
228 | ea03467c | Iustin Pop | """Serialize the _JobQueue instance.
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229 | ea03467c | Iustin Pop |
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230 | ea03467c | Iustin Pop | @rtype: dict
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231 | ea03467c | Iustin Pop | @return: the serialized state
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232 | ea03467c | Iustin Pop |
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233 | ea03467c | Iustin Pop | """
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234 | f1da30e6 | Michael Hanselmann | return {
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235 | f1da30e6 | Michael Hanselmann | "id": self.id, |
236 | 85f03e0d | Michael Hanselmann | "ops": [op.Serialize() for op in self.ops], |
237 | c56ec146 | Iustin Pop | "start_timestamp": self.start_timestamp, |
238 | c56ec146 | Iustin Pop | "end_timestamp": self.end_timestamp, |
239 | c56ec146 | Iustin Pop | "received_timestamp": self.received_timestamp, |
240 | f1da30e6 | Michael Hanselmann | } |
241 | f1da30e6 | Michael Hanselmann | |
242 | 85f03e0d | Michael Hanselmann | def CalcStatus(self): |
243 | ea03467c | Iustin Pop | """Compute the status of this job.
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244 | ea03467c | Iustin Pop |
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245 | ea03467c | Iustin Pop | This function iterates over all the _QueuedOpCodes in the job and
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246 | ea03467c | Iustin Pop | based on their status, computes the job status.
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247 | ea03467c | Iustin Pop |
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248 | ea03467c | Iustin Pop | The algorithm is:
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249 | ea03467c | Iustin Pop | - if we find a cancelled, or finished with error, the job
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250 | ea03467c | Iustin Pop | status will be the same
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251 | ea03467c | Iustin Pop | - otherwise, the last opcode with the status one of:
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252 | ea03467c | Iustin Pop | - waitlock
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253 | fbf0262f | Michael Hanselmann | - canceling
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254 | ea03467c | Iustin Pop | - running
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255 | ea03467c | Iustin Pop |
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256 | ea03467c | Iustin Pop | will determine the job status
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257 | ea03467c | Iustin Pop |
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258 | ea03467c | Iustin Pop | - otherwise, it means either all opcodes are queued, or success,
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259 | ea03467c | Iustin Pop | and the job status will be the same
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260 | ea03467c | Iustin Pop |
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261 | ea03467c | Iustin Pop | @return: the job status
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262 | ea03467c | Iustin Pop |
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263 | ea03467c | Iustin Pop | """
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264 | e2715f69 | Michael Hanselmann | status = constants.JOB_STATUS_QUEUED |
265 | e2715f69 | Michael Hanselmann | |
266 | e2715f69 | Michael Hanselmann | all_success = True
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267 | 85f03e0d | Michael Hanselmann | for op in self.ops: |
268 | 85f03e0d | Michael Hanselmann | if op.status == constants.OP_STATUS_SUCCESS:
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269 | e2715f69 | Michael Hanselmann | continue
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270 | e2715f69 | Michael Hanselmann | |
271 | e2715f69 | Michael Hanselmann | all_success = False
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272 | e2715f69 | Michael Hanselmann | |
273 | 85f03e0d | Michael Hanselmann | if op.status == constants.OP_STATUS_QUEUED:
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274 | e2715f69 | Michael Hanselmann | pass
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275 | e92376d7 | Iustin Pop | elif op.status == constants.OP_STATUS_WAITLOCK:
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276 | e92376d7 | Iustin Pop | status = constants.JOB_STATUS_WAITLOCK |
277 | 85f03e0d | Michael Hanselmann | elif op.status == constants.OP_STATUS_RUNNING:
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278 | e2715f69 | Michael Hanselmann | status = constants.JOB_STATUS_RUNNING |
279 | fbf0262f | Michael Hanselmann | elif op.status == constants.OP_STATUS_CANCELING:
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280 | fbf0262f | Michael Hanselmann | status = constants.JOB_STATUS_CANCELING |
281 | fbf0262f | Michael Hanselmann | break
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282 | 85f03e0d | Michael Hanselmann | elif op.status == constants.OP_STATUS_ERROR:
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283 | f1da30e6 | Michael Hanselmann | status = constants.JOB_STATUS_ERROR |
284 | f1da30e6 | Michael Hanselmann | # The whole job fails if one opcode failed
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285 | f1da30e6 | Michael Hanselmann | break
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286 | 85f03e0d | Michael Hanselmann | elif op.status == constants.OP_STATUS_CANCELED:
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287 | 4cb1d919 | Michael Hanselmann | status = constants.OP_STATUS_CANCELED |
288 | 4cb1d919 | Michael Hanselmann | break
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289 | e2715f69 | Michael Hanselmann | |
290 | e2715f69 | Michael Hanselmann | if all_success:
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291 | e2715f69 | Michael Hanselmann | status = constants.JOB_STATUS_SUCCESS |
292 | e2715f69 | Michael Hanselmann | |
293 | e2715f69 | Michael Hanselmann | return status
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294 | e2715f69 | Michael Hanselmann | |
295 | 6c5a7090 | Michael Hanselmann | def GetLogEntries(self, newer_than): |
296 | ea03467c | Iustin Pop | """Selectively returns the log entries.
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297 | ea03467c | Iustin Pop |
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298 | ea03467c | Iustin Pop | @type newer_than: None or int
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299 | 5bbd3f7f | Michael Hanselmann | @param newer_than: if this is None, return all log entries,
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300 | ea03467c | Iustin Pop | otherwise return only the log entries with serial higher
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301 | ea03467c | Iustin Pop | than this value
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302 | ea03467c | Iustin Pop | @rtype: list
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303 | ea03467c | Iustin Pop | @return: the list of the log entries selected
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304 | ea03467c | Iustin Pop |
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305 | ea03467c | Iustin Pop | """
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306 | 6c5a7090 | Michael Hanselmann | if newer_than is None: |
307 | 6c5a7090 | Michael Hanselmann | serial = -1
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308 | 6c5a7090 | Michael Hanselmann | else:
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309 | 6c5a7090 | Michael Hanselmann | serial = newer_than |
310 | 6c5a7090 | Michael Hanselmann | |
311 | 6c5a7090 | Michael Hanselmann | entries = [] |
312 | 6c5a7090 | Michael Hanselmann | for op in self.ops: |
313 | 63712a09 | Iustin Pop | entries.extend(filter(lambda entry: entry[0] > serial, op.log)) |
314 | 6c5a7090 | Michael Hanselmann | |
315 | 6c5a7090 | Michael Hanselmann | return entries
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316 | 6c5a7090 | Michael Hanselmann | |
317 | 34327f51 | Iustin Pop | def MarkUnfinishedOps(self, status, result): |
318 | 34327f51 | Iustin Pop | """Mark unfinished opcodes with a given status and result.
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319 | 34327f51 | Iustin Pop |
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320 | 34327f51 | Iustin Pop | This is an utility function for marking all running or waiting to
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321 | 34327f51 | Iustin Pop | be run opcodes with a given status. Opcodes which are already
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322 | 34327f51 | Iustin Pop | finalised are not changed.
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323 | 34327f51 | Iustin Pop |
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324 | 34327f51 | Iustin Pop | @param status: a given opcode status
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325 | 34327f51 | Iustin Pop | @param result: the opcode result
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326 | 34327f51 | Iustin Pop |
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327 | 34327f51 | Iustin Pop | """
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328 | 34327f51 | Iustin Pop | not_marked = True
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329 | 34327f51 | Iustin Pop | for op in self.ops: |
330 | 34327f51 | Iustin Pop | if op.status in constants.OPS_FINALIZED: |
331 | 34327f51 | Iustin Pop | assert not_marked, "Finalized opcodes found after non-finalized ones" |
332 | 34327f51 | Iustin Pop | continue
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333 | 34327f51 | Iustin Pop | op.status = status |
334 | 34327f51 | Iustin Pop | op.result = result |
335 | 34327f51 | Iustin Pop | not_marked = False
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336 | 34327f51 | Iustin Pop | |
337 | f1048938 | Iustin Pop | |
338 | ef2df7d3 | Michael Hanselmann | class _OpExecCallbacks(mcpu.OpExecCbBase): |
339 | 031a3e57 | Michael Hanselmann | def __init__(self, queue, job, op): |
340 | 031a3e57 | Michael Hanselmann | """Initializes this class.
|
341 | ea03467c | Iustin Pop |
|
342 | 031a3e57 | Michael Hanselmann | @type queue: L{JobQueue}
|
343 | 031a3e57 | Michael Hanselmann | @param queue: Job queue
|
344 | 031a3e57 | Michael Hanselmann | @type job: L{_QueuedJob}
|
345 | 031a3e57 | Michael Hanselmann | @param job: Job object
|
346 | 031a3e57 | Michael Hanselmann | @type op: L{_QueuedOpCode}
|
347 | 031a3e57 | Michael Hanselmann | @param op: OpCode
|
348 | 031a3e57 | Michael Hanselmann |
|
349 | 031a3e57 | Michael Hanselmann | """
|
350 | 031a3e57 | Michael Hanselmann | assert queue, "Queue is missing" |
351 | 031a3e57 | Michael Hanselmann | assert job, "Job is missing" |
352 | 031a3e57 | Michael Hanselmann | assert op, "Opcode is missing" |
353 | 031a3e57 | Michael Hanselmann | |
354 | 031a3e57 | Michael Hanselmann | self._queue = queue
|
355 | 031a3e57 | Michael Hanselmann | self._job = job
|
356 | 031a3e57 | Michael Hanselmann | self._op = op
|
357 | 031a3e57 | Michael Hanselmann | |
358 | 031a3e57 | Michael Hanselmann | def NotifyStart(self): |
359 | e92376d7 | Iustin Pop | """Mark the opcode as running, not lock-waiting.
|
360 | e92376d7 | Iustin Pop |
|
361 | 031a3e57 | Michael Hanselmann | This is called from the mcpu code as a notifier function, when the LU is
|
362 | 031a3e57 | Michael Hanselmann | finally about to start the Exec() method. Of course, to have end-user
|
363 | 031a3e57 | Michael Hanselmann | visible results, the opcode must be initially (before calling into
|
364 | 031a3e57 | Michael Hanselmann | Processor.ExecOpCode) set to OP_STATUS_WAITLOCK.
|
365 | e92376d7 | Iustin Pop |
|
366 | e92376d7 | Iustin Pop | """
|
367 | 031a3e57 | Michael Hanselmann | self._queue.acquire()
|
368 | e92376d7 | Iustin Pop | try:
|
369 | 031a3e57 | Michael Hanselmann | assert self._op.status in (constants.OP_STATUS_WAITLOCK, |
370 | 031a3e57 | Michael Hanselmann | constants.OP_STATUS_CANCELING) |
371 | fbf0262f | Michael Hanselmann | |
372 | ef2df7d3 | Michael Hanselmann | # All locks are acquired by now
|
373 | ef2df7d3 | Michael Hanselmann | self._job.lock_status = None |
374 | ef2df7d3 | Michael Hanselmann | |
375 | fbf0262f | Michael Hanselmann | # Cancel here if we were asked to
|
376 | 031a3e57 | Michael Hanselmann | if self._op.status == constants.OP_STATUS_CANCELING: |
377 | fbf0262f | Michael Hanselmann | raise CancelJob()
|
378 | fbf0262f | Michael Hanselmann | |
379 | 031a3e57 | Michael Hanselmann | self._op.status = constants.OP_STATUS_RUNNING
|
380 | e92376d7 | Iustin Pop | finally:
|
381 | 031a3e57 | Michael Hanselmann | self._queue.release()
|
382 | 031a3e57 | Michael Hanselmann | |
383 | 031a3e57 | Michael Hanselmann | def Feedback(self, *args): |
384 | 031a3e57 | Michael Hanselmann | """Append a log entry.
|
385 | 031a3e57 | Michael Hanselmann |
|
386 | 031a3e57 | Michael Hanselmann | """
|
387 | 031a3e57 | Michael Hanselmann | assert len(args) < 3 |
388 | 031a3e57 | Michael Hanselmann | |
389 | 031a3e57 | Michael Hanselmann | if len(args) == 1: |
390 | 031a3e57 | Michael Hanselmann | log_type = constants.ELOG_MESSAGE |
391 | 031a3e57 | Michael Hanselmann | log_msg = args[0]
|
392 | 031a3e57 | Michael Hanselmann | else:
|
393 | 031a3e57 | Michael Hanselmann | (log_type, log_msg) = args |
394 | 031a3e57 | Michael Hanselmann | |
395 | 031a3e57 | Michael Hanselmann | # The time is split to make serialization easier and not lose
|
396 | 031a3e57 | Michael Hanselmann | # precision.
|
397 | 031a3e57 | Michael Hanselmann | timestamp = utils.SplitTime(time.time()) |
398 | e92376d7 | Iustin Pop | |
399 | 031a3e57 | Michael Hanselmann | self._queue.acquire()
|
400 | 031a3e57 | Michael Hanselmann | try:
|
401 | 031a3e57 | Michael Hanselmann | self._job.log_serial += 1 |
402 | 031a3e57 | Michael Hanselmann | self._op.log.append((self._job.log_serial, timestamp, log_type, log_msg)) |
403 | 031a3e57 | Michael Hanselmann | |
404 | 031a3e57 | Michael Hanselmann | self._job.change.notifyAll()
|
405 | 031a3e57 | Michael Hanselmann | finally:
|
406 | 031a3e57 | Michael Hanselmann | self._queue.release()
|
407 | 031a3e57 | Michael Hanselmann | |
408 | ef2df7d3 | Michael Hanselmann | def ReportLocks(self, msg): |
409 | ef2df7d3 | Michael Hanselmann | """Write locking information to the job.
|
410 | ef2df7d3 | Michael Hanselmann |
|
411 | ef2df7d3 | Michael Hanselmann | Called whenever the LU processor is waiting for a lock or has acquired one.
|
412 | ef2df7d3 | Michael Hanselmann |
|
413 | ef2df7d3 | Michael Hanselmann | """
|
414 | ef2df7d3 | Michael Hanselmann | # Not getting the queue lock because this is a single assignment
|
415 | ef2df7d3 | Michael Hanselmann | self._job.lock_status = msg
|
416 | ef2df7d3 | Michael Hanselmann | |
417 | 031a3e57 | Michael Hanselmann | |
418 | 031a3e57 | Michael Hanselmann | class _JobQueueWorker(workerpool.BaseWorker): |
419 | 031a3e57 | Michael Hanselmann | """The actual job workers.
|
420 | 031a3e57 | Michael Hanselmann |
|
421 | 031a3e57 | Michael Hanselmann | """
|
422 | 85f03e0d | Michael Hanselmann | def RunTask(self, job): |
423 | e2715f69 | Michael Hanselmann | """Job executor.
|
424 | e2715f69 | Michael Hanselmann |
|
425 | 6c5a7090 | Michael Hanselmann | This functions processes a job. It is closely tied to the _QueuedJob and
|
426 | 6c5a7090 | Michael Hanselmann | _QueuedOpCode classes.
|
427 | e2715f69 | Michael Hanselmann |
|
428 | ea03467c | Iustin Pop | @type job: L{_QueuedJob}
|
429 | ea03467c | Iustin Pop | @param job: the job to be processed
|
430 | ea03467c | Iustin Pop |
|
431 | e2715f69 | Michael Hanselmann | """
|
432 | d21d09d6 | Iustin Pop | logging.info("Worker %s processing job %s",
|
433 | e2715f69 | Michael Hanselmann | self.worker_id, job.id)
|
434 | 5bdce580 | Michael Hanselmann | proc = mcpu.Processor(self.pool.queue.context)
|
435 | 031a3e57 | Michael Hanselmann | queue = job.queue |
436 | e2715f69 | Michael Hanselmann | try:
|
437 | 85f03e0d | Michael Hanselmann | try:
|
438 | 85f03e0d | Michael Hanselmann | count = len(job.ops)
|
439 | 85f03e0d | Michael Hanselmann | for idx, op in enumerate(job.ops): |
440 | d21d09d6 | Iustin Pop | op_summary = op.input.Summary() |
441 | f6424741 | Iustin Pop | if op.status == constants.OP_STATUS_SUCCESS:
|
442 | f6424741 | Iustin Pop | # this is a job that was partially completed before master
|
443 | f6424741 | Iustin Pop | # daemon shutdown, so it can be expected that some opcodes
|
444 | f6424741 | Iustin Pop | # are already completed successfully (if any did error
|
445 | f6424741 | Iustin Pop | # out, then the whole job should have been aborted and not
|
446 | f6424741 | Iustin Pop | # resubmitted for processing)
|
447 | f6424741 | Iustin Pop | logging.info("Op %s/%s: opcode %s already processed, skipping",
|
448 | f6424741 | Iustin Pop | idx + 1, count, op_summary)
|
449 | f6424741 | Iustin Pop | continue
|
450 | 85f03e0d | Michael Hanselmann | try:
|
451 | d21d09d6 | Iustin Pop | logging.info("Op %s/%s: Starting opcode %s", idx + 1, count, |
452 | d21d09d6 | Iustin Pop | op_summary) |
453 | 85f03e0d | Michael Hanselmann | |
454 | 85f03e0d | Michael Hanselmann | queue.acquire() |
455 | 85f03e0d | Michael Hanselmann | try:
|
456 | df0fb067 | Iustin Pop | if op.status == constants.OP_STATUS_CANCELED:
|
457 | df0fb067 | Iustin Pop | raise CancelJob()
|
458 | fbf0262f | Michael Hanselmann | assert op.status == constants.OP_STATUS_QUEUED
|
459 | e92376d7 | Iustin Pop | op.status = constants.OP_STATUS_WAITLOCK |
460 | 85f03e0d | Michael Hanselmann | op.result = None
|
461 | 70552c46 | Michael Hanselmann | op.start_timestamp = TimeStampNow() |
462 | c56ec146 | Iustin Pop | if idx == 0: # first opcode |
463 | c56ec146 | Iustin Pop | job.start_timestamp = op.start_timestamp |
464 | 85f03e0d | Michael Hanselmann | queue.UpdateJobUnlocked(job) |
465 | 85f03e0d | Michael Hanselmann | |
466 | 38206f3c | Iustin Pop | input_opcode = op.input |
467 | 85f03e0d | Michael Hanselmann | finally:
|
468 | 85f03e0d | Michael Hanselmann | queue.release() |
469 | 85f03e0d | Michael Hanselmann | |
470 | 031a3e57 | Michael Hanselmann | # Make sure not to hold queue lock while calling ExecOpCode
|
471 | 031a3e57 | Michael Hanselmann | result = proc.ExecOpCode(input_opcode, |
472 | ef2df7d3 | Michael Hanselmann | _OpExecCallbacks(queue, job, op)) |
473 | 85f03e0d | Michael Hanselmann | |
474 | 85f03e0d | Michael Hanselmann | queue.acquire() |
475 | 85f03e0d | Michael Hanselmann | try:
|
476 | 85f03e0d | Michael Hanselmann | op.status = constants.OP_STATUS_SUCCESS |
477 | 85f03e0d | Michael Hanselmann | op.result = result |
478 | 70552c46 | Michael Hanselmann | op.end_timestamp = TimeStampNow() |
479 | 85f03e0d | Michael Hanselmann | queue.UpdateJobUnlocked(job) |
480 | 85f03e0d | Michael Hanselmann | finally:
|
481 | 85f03e0d | Michael Hanselmann | queue.release() |
482 | 85f03e0d | Michael Hanselmann | |
483 | d21d09d6 | Iustin Pop | logging.info("Op %s/%s: Successfully finished opcode %s",
|
484 | d21d09d6 | Iustin Pop | idx + 1, count, op_summary)
|
485 | fbf0262f | Michael Hanselmann | except CancelJob:
|
486 | fbf0262f | Michael Hanselmann | # Will be handled further up
|
487 | fbf0262f | Michael Hanselmann | raise
|
488 | 85f03e0d | Michael Hanselmann | except Exception, err: |
489 | 85f03e0d | Michael Hanselmann | queue.acquire() |
490 | 85f03e0d | Michael Hanselmann | try:
|
491 | 85f03e0d | Michael Hanselmann | try:
|
492 | 85f03e0d | Michael Hanselmann | op.status = constants.OP_STATUS_ERROR |
493 | bcb66fca | Iustin Pop | if isinstance(err, errors.GenericError): |
494 | bcb66fca | Iustin Pop | op.result = errors.EncodeException(err) |
495 | bcb66fca | Iustin Pop | else:
|
496 | bcb66fca | Iustin Pop | op.result = str(err)
|
497 | 70552c46 | Michael Hanselmann | op.end_timestamp = TimeStampNow() |
498 | 0f6be82a | Iustin Pop | logging.info("Op %s/%s: Error in opcode %s: %s",
|
499 | 0f6be82a | Iustin Pop | idx + 1, count, op_summary, err)
|
500 | 85f03e0d | Michael Hanselmann | finally:
|
501 | 85f03e0d | Michael Hanselmann | queue.UpdateJobUnlocked(job) |
502 | 85f03e0d | Michael Hanselmann | finally:
|
503 | 85f03e0d | Michael Hanselmann | queue.release() |
504 | 85f03e0d | Michael Hanselmann | raise
|
505 | 85f03e0d | Michael Hanselmann | |
506 | fbf0262f | Michael Hanselmann | except CancelJob:
|
507 | fbf0262f | Michael Hanselmann | queue.acquire() |
508 | fbf0262f | Michael Hanselmann | try:
|
509 | fbf0262f | Michael Hanselmann | queue.CancelJobUnlocked(job) |
510 | fbf0262f | Michael Hanselmann | finally:
|
511 | fbf0262f | Michael Hanselmann | queue.release() |
512 | 85f03e0d | Michael Hanselmann | except errors.GenericError, err:
|
513 | 85f03e0d | Michael Hanselmann | logging.exception("Ganeti exception")
|
514 | 85f03e0d | Michael Hanselmann | except:
|
515 | 85f03e0d | Michael Hanselmann | logging.exception("Unhandled exception")
|
516 | e2715f69 | Michael Hanselmann | finally:
|
517 | 85f03e0d | Michael Hanselmann | queue.acquire() |
518 | 85f03e0d | Michael Hanselmann | try:
|
519 | 65548ed5 | Michael Hanselmann | try:
|
520 | ef2df7d3 | Michael Hanselmann | job.lock_status = None
|
521 | c56ec146 | Iustin Pop | job.end_timestamp = TimeStampNow() |
522 | 65548ed5 | Michael Hanselmann | queue.UpdateJobUnlocked(job) |
523 | 65548ed5 | Michael Hanselmann | finally:
|
524 | 65548ed5 | Michael Hanselmann | job_id = job.id |
525 | 65548ed5 | Michael Hanselmann | status = job.CalcStatus() |
526 | 85f03e0d | Michael Hanselmann | finally:
|
527 | 85f03e0d | Michael Hanselmann | queue.release() |
528 | ef2df7d3 | Michael Hanselmann | |
529 | d21d09d6 | Iustin Pop | logging.info("Worker %s finished job %s, status = %s",
|
530 | d21d09d6 | Iustin Pop | self.worker_id, job_id, status)
|
531 | e2715f69 | Michael Hanselmann | |
532 | e2715f69 | Michael Hanselmann | |
533 | e2715f69 | Michael Hanselmann | class _JobQueueWorkerPool(workerpool.WorkerPool): |
534 | ea03467c | Iustin Pop | """Simple class implementing a job-processing workerpool.
|
535 | ea03467c | Iustin Pop |
|
536 | ea03467c | Iustin Pop | """
|
537 | 5bdce580 | Michael Hanselmann | def __init__(self, queue): |
538 | e2715f69 | Michael Hanselmann | super(_JobQueueWorkerPool, self).__init__(JOBQUEUE_THREADS, |
539 | e2715f69 | Michael Hanselmann | _JobQueueWorker) |
540 | 5bdce580 | Michael Hanselmann | self.queue = queue
|
541 | e2715f69 | Michael Hanselmann | |
542 | e2715f69 | Michael Hanselmann | |
543 | 85f03e0d | Michael Hanselmann | class JobQueue(object): |
544 | 5bbd3f7f | Michael Hanselmann | """Queue used to manage the jobs.
|
545 | ea03467c | Iustin Pop |
|
546 | ea03467c | Iustin Pop | @cvar _RE_JOB_FILE: regex matching the valid job file names
|
547 | ea03467c | Iustin Pop |
|
548 | ea03467c | Iustin Pop | """
|
549 | bac5ffc3 | Oleksiy Mishchenko | _RE_JOB_FILE = re.compile(r"^job-(%s)$" % constants.JOB_ID_TEMPLATE)
|
550 | f1da30e6 | Michael Hanselmann | |
551 | db37da70 | Michael Hanselmann | def _RequireOpenQueue(fn): |
552 | db37da70 | Michael Hanselmann | """Decorator for "public" functions.
|
553 | db37da70 | Michael Hanselmann |
|
554 | ea03467c | Iustin Pop | This function should be used for all 'public' functions. That is,
|
555 | ea03467c | Iustin Pop | functions usually called from other classes.
|
556 | db37da70 | Michael Hanselmann |
|
557 | ea03467c | Iustin Pop | @warning: Use this decorator only after utils.LockedMethod!
|
558 | db37da70 | Michael Hanselmann |
|
559 | ea03467c | Iustin Pop | Example::
|
560 | db37da70 | Michael Hanselmann | @utils.LockedMethod
|
561 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
562 | db37da70 | Michael Hanselmann | def Example(self):
|
563 | db37da70 | Michael Hanselmann | pass
|
564 | db37da70 | Michael Hanselmann |
|
565 | db37da70 | Michael Hanselmann | """
|
566 | db37da70 | Michael Hanselmann | def wrapper(self, *args, **kwargs): |
567 | 04ab05ce | Michael Hanselmann | assert self._queue_lock is not None, "Queue should be open" |
568 | db37da70 | Michael Hanselmann | return fn(self, *args, **kwargs) |
569 | db37da70 | Michael Hanselmann | return wrapper
|
570 | db37da70 | Michael Hanselmann | |
571 | 85f03e0d | Michael Hanselmann | def __init__(self, context): |
572 | ea03467c | Iustin Pop | """Constructor for JobQueue.
|
573 | ea03467c | Iustin Pop |
|
574 | ea03467c | Iustin Pop | The constructor will initialize the job queue object and then
|
575 | ea03467c | Iustin Pop | start loading the current jobs from disk, either for starting them
|
576 | ea03467c | Iustin Pop | (if they were queue) or for aborting them (if they were already
|
577 | ea03467c | Iustin Pop | running).
|
578 | ea03467c | Iustin Pop |
|
579 | ea03467c | Iustin Pop | @type context: GanetiContext
|
580 | ea03467c | Iustin Pop | @param context: the context object for access to the configuration
|
581 | ea03467c | Iustin Pop | data and other ganeti objects
|
582 | ea03467c | Iustin Pop |
|
583 | ea03467c | Iustin Pop | """
|
584 | 5bdce580 | Michael Hanselmann | self.context = context
|
585 | 5685c1a5 | Michael Hanselmann | self._memcache = weakref.WeakValueDictionary()
|
586 | c3f0a12f | Iustin Pop | self._my_hostname = utils.HostInfo().name
|
587 | f1da30e6 | Michael Hanselmann | |
588 | 85f03e0d | Michael Hanselmann | # Locking
|
589 | 85f03e0d | Michael Hanselmann | self._lock = threading.Lock()
|
590 | 85f03e0d | Michael Hanselmann | self.acquire = self._lock.acquire |
591 | 85f03e0d | Michael Hanselmann | self.release = self._lock.release |
592 | 85f03e0d | Michael Hanselmann | |
593 | 04ab05ce | Michael Hanselmann | # Initialize
|
594 | 5d6fb8eb | Michael Hanselmann | self._queue_lock = jstore.InitAndVerifyQueue(must_lock=True) |
595 | f1da30e6 | Michael Hanselmann | |
596 | 04ab05ce | Michael Hanselmann | # Read serial file
|
597 | 04ab05ce | Michael Hanselmann | self._last_serial = jstore.ReadSerial()
|
598 | 04ab05ce | Michael Hanselmann | assert self._last_serial is not None, ("Serial file was modified between" |
599 | 04ab05ce | Michael Hanselmann | " check in jstore and here")
|
600 | c4beba1c | Iustin Pop | |
601 | 23752136 | Michael Hanselmann | # Get initial list of nodes
|
602 | 99aabbed | Iustin Pop | self._nodes = dict((n.name, n.primary_ip) |
603 | 59303563 | Iustin Pop | for n in self.context.cfg.GetAllNodesInfo().values() |
604 | 59303563 | Iustin Pop | if n.master_candidate)
|
605 | 8e00939c | Michael Hanselmann | |
606 | 8e00939c | Michael Hanselmann | # Remove master node
|
607 | 8e00939c | Michael Hanselmann | try:
|
608 | 99aabbed | Iustin Pop | del self._nodes[self._my_hostname] |
609 | 33987705 | Iustin Pop | except KeyError: |
610 | 8e00939c | Michael Hanselmann | pass
|
611 | 23752136 | Michael Hanselmann | |
612 | 23752136 | Michael Hanselmann | # TODO: Check consistency across nodes
|
613 | 23752136 | Michael Hanselmann | |
614 | 85f03e0d | Michael Hanselmann | # Setup worker pool
|
615 | 5bdce580 | Michael Hanselmann | self._wpool = _JobQueueWorkerPool(self) |
616 | 85f03e0d | Michael Hanselmann | try:
|
617 | 16714921 | Michael Hanselmann | # We need to lock here because WorkerPool.AddTask() may start a job while
|
618 | 16714921 | Michael Hanselmann | # we're still doing our work.
|
619 | 16714921 | Michael Hanselmann | self.acquire()
|
620 | 16714921 | Michael Hanselmann | try:
|
621 | 711b5124 | Michael Hanselmann | logging.info("Inspecting job queue")
|
622 | 711b5124 | Michael Hanselmann | |
623 | 711b5124 | Michael Hanselmann | all_job_ids = self._GetJobIDsUnlocked()
|
624 | b7cb9024 | Michael Hanselmann | jobs_count = len(all_job_ids)
|
625 | 711b5124 | Michael Hanselmann | lastinfo = time.time() |
626 | 711b5124 | Michael Hanselmann | for idx, job_id in enumerate(all_job_ids): |
627 | 711b5124 | Michael Hanselmann | # Give an update every 1000 jobs or 10 seconds
|
628 | b7cb9024 | Michael Hanselmann | if (idx % 1000 == 0 or time.time() >= (lastinfo + 10.0) or |
629 | b7cb9024 | Michael Hanselmann | idx == (jobs_count - 1)):
|
630 | 711b5124 | Michael Hanselmann | logging.info("Job queue inspection: %d/%d (%0.1f %%)",
|
631 | b7cb9024 | Michael Hanselmann | idx, jobs_count - 1, 100.0 * (idx + 1) / jobs_count) |
632 | 711b5124 | Michael Hanselmann | lastinfo = time.time() |
633 | 711b5124 | Michael Hanselmann | |
634 | 711b5124 | Michael Hanselmann | job = self._LoadJobUnlocked(job_id)
|
635 | 711b5124 | Michael Hanselmann | |
636 | 16714921 | Michael Hanselmann | # a failure in loading the job can cause 'None' to be returned
|
637 | 16714921 | Michael Hanselmann | if job is None: |
638 | 16714921 | Michael Hanselmann | continue
|
639 | 94ed59a5 | Iustin Pop | |
640 | 16714921 | Michael Hanselmann | status = job.CalcStatus() |
641 | 85f03e0d | Michael Hanselmann | |
642 | 16714921 | Michael Hanselmann | if status in (constants.JOB_STATUS_QUEUED, ): |
643 | 16714921 | Michael Hanselmann | self._wpool.AddTask(job)
|
644 | 85f03e0d | Michael Hanselmann | |
645 | 16714921 | Michael Hanselmann | elif status in (constants.JOB_STATUS_RUNNING, |
646 | fbf0262f | Michael Hanselmann | constants.JOB_STATUS_WAITLOCK, |
647 | fbf0262f | Michael Hanselmann | constants.JOB_STATUS_CANCELING): |
648 | 16714921 | Michael Hanselmann | logging.warning("Unfinished job %s found: %s", job.id, job)
|
649 | 16714921 | Michael Hanselmann | try:
|
650 | 34327f51 | Iustin Pop | job.MarkUnfinishedOps(constants.OP_STATUS_ERROR, |
651 | 34327f51 | Iustin Pop | "Unclean master daemon shutdown")
|
652 | 16714921 | Michael Hanselmann | finally:
|
653 | 16714921 | Michael Hanselmann | self.UpdateJobUnlocked(job)
|
654 | 711b5124 | Michael Hanselmann | |
655 | 711b5124 | Michael Hanselmann | logging.info("Job queue inspection finished")
|
656 | 16714921 | Michael Hanselmann | finally:
|
657 | 16714921 | Michael Hanselmann | self.release()
|
658 | 16714921 | Michael Hanselmann | except:
|
659 | 16714921 | Michael Hanselmann | self._wpool.TerminateWorkers()
|
660 | 16714921 | Michael Hanselmann | raise
|
661 | 85f03e0d | Michael Hanselmann | |
662 | d2e03a33 | Michael Hanselmann | @utils.LockedMethod
|
663 | d2e03a33 | Michael Hanselmann | @_RequireOpenQueue
|
664 | 99aabbed | Iustin Pop | def AddNode(self, node): |
665 | 99aabbed | Iustin Pop | """Register a new node with the queue.
|
666 | 99aabbed | Iustin Pop |
|
667 | 99aabbed | Iustin Pop | @type node: L{objects.Node}
|
668 | 99aabbed | Iustin Pop | @param node: the node object to be added
|
669 | 99aabbed | Iustin Pop |
|
670 | 99aabbed | Iustin Pop | """
|
671 | 99aabbed | Iustin Pop | node_name = node.name |
672 | d2e03a33 | Michael Hanselmann | assert node_name != self._my_hostname |
673 | 23752136 | Michael Hanselmann | |
674 | 9f774ee8 | Michael Hanselmann | # Clean queue directory on added node
|
675 | c8457ce7 | Iustin Pop | result = rpc.RpcRunner.call_jobqueue_purge(node_name) |
676 | 3cebe102 | Michael Hanselmann | msg = result.fail_msg |
677 | c8457ce7 | Iustin Pop | if msg:
|
678 | c8457ce7 | Iustin Pop | logging.warning("Cannot cleanup queue directory on node %s: %s",
|
679 | c8457ce7 | Iustin Pop | node_name, msg) |
680 | 23752136 | Michael Hanselmann | |
681 | 59303563 | Iustin Pop | if not node.master_candidate: |
682 | 59303563 | Iustin Pop | # remove if existing, ignoring errors
|
683 | 59303563 | Iustin Pop | self._nodes.pop(node_name, None) |
684 | 59303563 | Iustin Pop | # and skip the replication of the job ids
|
685 | 59303563 | Iustin Pop | return
|
686 | 59303563 | Iustin Pop | |
687 | d2e03a33 | Michael Hanselmann | # Upload the whole queue excluding archived jobs
|
688 | d2e03a33 | Michael Hanselmann | files = [self._GetJobPath(job_id) for job_id in self._GetJobIDsUnlocked()] |
689 | 23752136 | Michael Hanselmann | |
690 | d2e03a33 | Michael Hanselmann | # Upload current serial file
|
691 | d2e03a33 | Michael Hanselmann | files.append(constants.JOB_QUEUE_SERIAL_FILE) |
692 | d2e03a33 | Michael Hanselmann | |
693 | d2e03a33 | Michael Hanselmann | for file_name in files: |
694 | 9f774ee8 | Michael Hanselmann | # Read file content
|
695 | 13998ef2 | Michael Hanselmann | content = utils.ReadFile(file_name) |
696 | 9f774ee8 | Michael Hanselmann | |
697 | a3811745 | Michael Hanselmann | result = rpc.RpcRunner.call_jobqueue_update([node_name], |
698 | a3811745 | Michael Hanselmann | [node.primary_ip], |
699 | a3811745 | Michael Hanselmann | file_name, content) |
700 | 3cebe102 | Michael Hanselmann | msg = result[node_name].fail_msg |
701 | c8457ce7 | Iustin Pop | if msg:
|
702 | c8457ce7 | Iustin Pop | logging.error("Failed to upload file %s to node %s: %s",
|
703 | c8457ce7 | Iustin Pop | file_name, node_name, msg) |
704 | d2e03a33 | Michael Hanselmann | |
705 | 99aabbed | Iustin Pop | self._nodes[node_name] = node.primary_ip
|
706 | d2e03a33 | Michael Hanselmann | |
707 | d2e03a33 | Michael Hanselmann | @utils.LockedMethod
|
708 | d2e03a33 | Michael Hanselmann | @_RequireOpenQueue
|
709 | d2e03a33 | Michael Hanselmann | def RemoveNode(self, node_name): |
710 | ea03467c | Iustin Pop | """Callback called when removing nodes from the cluster.
|
711 | ea03467c | Iustin Pop |
|
712 | ea03467c | Iustin Pop | @type node_name: str
|
713 | ea03467c | Iustin Pop | @param node_name: the name of the node to remove
|
714 | ea03467c | Iustin Pop |
|
715 | ea03467c | Iustin Pop | """
|
716 | 23752136 | Michael Hanselmann | try:
|
717 | d2e03a33 | Michael Hanselmann | # The queue is removed by the "leave node" RPC call.
|
718 | 99aabbed | Iustin Pop | del self._nodes[node_name] |
719 | d2e03a33 | Michael Hanselmann | except KeyError: |
720 | 23752136 | Michael Hanselmann | pass
|
721 | 23752136 | Michael Hanselmann | |
722 | e74798c1 | Michael Hanselmann | def _CheckRpcResult(self, result, nodes, failmsg): |
723 | ea03467c | Iustin Pop | """Verifies the status of an RPC call.
|
724 | ea03467c | Iustin Pop |
|
725 | ea03467c | Iustin Pop | Since we aim to keep consistency should this node (the current
|
726 | ea03467c | Iustin Pop | master) fail, we will log errors if our rpc fail, and especially
|
727 | 5bbd3f7f | Michael Hanselmann | log the case when more than half of the nodes fails.
|
728 | ea03467c | Iustin Pop |
|
729 | ea03467c | Iustin Pop | @param result: the data as returned from the rpc call
|
730 | ea03467c | Iustin Pop | @type nodes: list
|
731 | ea03467c | Iustin Pop | @param nodes: the list of nodes we made the call to
|
732 | ea03467c | Iustin Pop | @type failmsg: str
|
733 | ea03467c | Iustin Pop | @param failmsg: the identifier to be used for logging
|
734 | ea03467c | Iustin Pop |
|
735 | ea03467c | Iustin Pop | """
|
736 | e74798c1 | Michael Hanselmann | failed = [] |
737 | e74798c1 | Michael Hanselmann | success = [] |
738 | e74798c1 | Michael Hanselmann | |
739 | e74798c1 | Michael Hanselmann | for node in nodes: |
740 | 3cebe102 | Michael Hanselmann | msg = result[node].fail_msg |
741 | c8457ce7 | Iustin Pop | if msg:
|
742 | e74798c1 | Michael Hanselmann | failed.append(node) |
743 | c8457ce7 | Iustin Pop | logging.error("RPC call %s failed on node %s: %s",
|
744 | c8457ce7 | Iustin Pop | result[node].call, node, msg) |
745 | c8457ce7 | Iustin Pop | else:
|
746 | c8457ce7 | Iustin Pop | success.append(node) |
747 | e74798c1 | Michael Hanselmann | |
748 | e74798c1 | Michael Hanselmann | # +1 for the master node
|
749 | e74798c1 | Michael Hanselmann | if (len(success) + 1) < len(failed): |
750 | e74798c1 | Michael Hanselmann | # TODO: Handle failing nodes
|
751 | e74798c1 | Michael Hanselmann | logging.error("More than half of the nodes failed")
|
752 | e74798c1 | Michael Hanselmann | |
753 | 99aabbed | Iustin Pop | def _GetNodeIp(self): |
754 | 99aabbed | Iustin Pop | """Helper for returning the node name/ip list.
|
755 | 99aabbed | Iustin Pop |
|
756 | ea03467c | Iustin Pop | @rtype: (list, list)
|
757 | ea03467c | Iustin Pop | @return: a tuple of two lists, the first one with the node
|
758 | ea03467c | Iustin Pop | names and the second one with the node addresses
|
759 | ea03467c | Iustin Pop |
|
760 | 99aabbed | Iustin Pop | """
|
761 | 99aabbed | Iustin Pop | name_list = self._nodes.keys()
|
762 | 99aabbed | Iustin Pop | addr_list = [self._nodes[name] for name in name_list] |
763 | 99aabbed | Iustin Pop | return name_list, addr_list
|
764 | 99aabbed | Iustin Pop | |
765 | 8e00939c | Michael Hanselmann | def _WriteAndReplicateFileUnlocked(self, file_name, data): |
766 | 8e00939c | Michael Hanselmann | """Writes a file locally and then replicates it to all nodes.
|
767 | 8e00939c | Michael Hanselmann |
|
768 | ea03467c | Iustin Pop | This function will replace the contents of a file on the local
|
769 | ea03467c | Iustin Pop | node and then replicate it to all the other nodes we have.
|
770 | ea03467c | Iustin Pop |
|
771 | ea03467c | Iustin Pop | @type file_name: str
|
772 | ea03467c | Iustin Pop | @param file_name: the path of the file to be replicated
|
773 | ea03467c | Iustin Pop | @type data: str
|
774 | ea03467c | Iustin Pop | @param data: the new contents of the file
|
775 | ea03467c | Iustin Pop |
|
776 | 8e00939c | Michael Hanselmann | """
|
777 | 8e00939c | Michael Hanselmann | utils.WriteFile(file_name, data=data) |
778 | 8e00939c | Michael Hanselmann | |
779 | 99aabbed | Iustin Pop | names, addrs = self._GetNodeIp()
|
780 | a3811745 | Michael Hanselmann | result = rpc.RpcRunner.call_jobqueue_update(names, addrs, file_name, data) |
781 | e74798c1 | Michael Hanselmann | self._CheckRpcResult(result, self._nodes, |
782 | e74798c1 | Michael Hanselmann | "Updating %s" % file_name)
|
783 | 23752136 | Michael Hanselmann | |
784 | d7fd1f28 | Michael Hanselmann | def _RenameFilesUnlocked(self, rename): |
785 | ea03467c | Iustin Pop | """Renames a file locally and then replicate the change.
|
786 | ea03467c | Iustin Pop |
|
787 | ea03467c | Iustin Pop | This function will rename a file in the local queue directory
|
788 | ea03467c | Iustin Pop | and then replicate this rename to all the other nodes we have.
|
789 | ea03467c | Iustin Pop |
|
790 | d7fd1f28 | Michael Hanselmann | @type rename: list of (old, new)
|
791 | d7fd1f28 | Michael Hanselmann | @param rename: List containing tuples mapping old to new names
|
792 | ea03467c | Iustin Pop |
|
793 | ea03467c | Iustin Pop | """
|
794 | dd875d32 | Michael Hanselmann | # Rename them locally
|
795 | d7fd1f28 | Michael Hanselmann | for old, new in rename: |
796 | d7fd1f28 | Michael Hanselmann | utils.RenameFile(old, new, mkdir=True)
|
797 | abc1f2ce | Michael Hanselmann | |
798 | dd875d32 | Michael Hanselmann | # ... and on all nodes
|
799 | dd875d32 | Michael Hanselmann | names, addrs = self._GetNodeIp()
|
800 | dd875d32 | Michael Hanselmann | result = rpc.RpcRunner.call_jobqueue_rename(names, addrs, rename) |
801 | dd875d32 | Michael Hanselmann | self._CheckRpcResult(result, self._nodes, "Renaming files (%r)" % rename) |
802 | abc1f2ce | Michael Hanselmann | |
803 | 85f03e0d | Michael Hanselmann | def _FormatJobID(self, job_id): |
804 | ea03467c | Iustin Pop | """Convert a job ID to string format.
|
805 | ea03467c | Iustin Pop |
|
806 | ea03467c | Iustin Pop | Currently this just does C{str(job_id)} after performing some
|
807 | ea03467c | Iustin Pop | checks, but if we want to change the job id format this will
|
808 | ea03467c | Iustin Pop | abstract this change.
|
809 | ea03467c | Iustin Pop |
|
810 | ea03467c | Iustin Pop | @type job_id: int or long
|
811 | ea03467c | Iustin Pop | @param job_id: the numeric job id
|
812 | ea03467c | Iustin Pop | @rtype: str
|
813 | ea03467c | Iustin Pop | @return: the formatted job id
|
814 | ea03467c | Iustin Pop |
|
815 | ea03467c | Iustin Pop | """
|
816 | 85f03e0d | Michael Hanselmann | if not isinstance(job_id, (int, long)): |
817 | 85f03e0d | Michael Hanselmann | raise errors.ProgrammerError("Job ID '%s' not numeric" % job_id) |
818 | 85f03e0d | Michael Hanselmann | if job_id < 0: |
819 | 85f03e0d | Michael Hanselmann | raise errors.ProgrammerError("Job ID %s is negative" % job_id) |
820 | 85f03e0d | Michael Hanselmann | |
821 | 85f03e0d | Michael Hanselmann | return str(job_id) |
822 | 85f03e0d | Michael Hanselmann | |
823 | 58b22b6e | Michael Hanselmann | @classmethod
|
824 | 58b22b6e | Michael Hanselmann | def _GetArchiveDirectory(cls, job_id): |
825 | 58b22b6e | Michael Hanselmann | """Returns the archive directory for a job.
|
826 | 58b22b6e | Michael Hanselmann |
|
827 | 58b22b6e | Michael Hanselmann | @type job_id: str
|
828 | 58b22b6e | Michael Hanselmann | @param job_id: Job identifier
|
829 | 58b22b6e | Michael Hanselmann | @rtype: str
|
830 | 58b22b6e | Michael Hanselmann | @return: Directory name
|
831 | 58b22b6e | Michael Hanselmann |
|
832 | 58b22b6e | Michael Hanselmann | """
|
833 | 58b22b6e | Michael Hanselmann | return str(int(job_id) / JOBS_PER_ARCHIVE_DIRECTORY) |
834 | 58b22b6e | Michael Hanselmann | |
835 | 009e73d0 | Iustin Pop | def _NewSerialsUnlocked(self, count): |
836 | f1da30e6 | Michael Hanselmann | """Generates a new job identifier.
|
837 | f1da30e6 | Michael Hanselmann |
|
838 | f1da30e6 | Michael Hanselmann | Job identifiers are unique during the lifetime of a cluster.
|
839 | f1da30e6 | Michael Hanselmann |
|
840 | 009e73d0 | Iustin Pop | @type count: integer
|
841 | 009e73d0 | Iustin Pop | @param count: how many serials to return
|
842 | ea03467c | Iustin Pop | @rtype: str
|
843 | ea03467c | Iustin Pop | @return: a string representing the job identifier.
|
844 | f1da30e6 | Michael Hanselmann |
|
845 | f1da30e6 | Michael Hanselmann | """
|
846 | 009e73d0 | Iustin Pop | assert count > 0 |
847 | f1da30e6 | Michael Hanselmann | # New number
|
848 | 009e73d0 | Iustin Pop | serial = self._last_serial + count
|
849 | f1da30e6 | Michael Hanselmann | |
850 | f1da30e6 | Michael Hanselmann | # Write to file
|
851 | 23752136 | Michael Hanselmann | self._WriteAndReplicateFileUnlocked(constants.JOB_QUEUE_SERIAL_FILE,
|
852 | 23752136 | Michael Hanselmann | "%s\n" % serial)
|
853 | f1da30e6 | Michael Hanselmann | |
854 | 009e73d0 | Iustin Pop | result = [self._FormatJobID(v)
|
855 | 009e73d0 | Iustin Pop | for v in range(self._last_serial, serial + 1)] |
856 | f1da30e6 | Michael Hanselmann | # Keep it only if we were able to write the file
|
857 | f1da30e6 | Michael Hanselmann | self._last_serial = serial
|
858 | f1da30e6 | Michael Hanselmann | |
859 | 009e73d0 | Iustin Pop | return result
|
860 | f1da30e6 | Michael Hanselmann | |
861 | 85f03e0d | Michael Hanselmann | @staticmethod
|
862 | 85f03e0d | Michael Hanselmann | def _GetJobPath(job_id): |
863 | ea03467c | Iustin Pop | """Returns the job file for a given job id.
|
864 | ea03467c | Iustin Pop |
|
865 | ea03467c | Iustin Pop | @type job_id: str
|
866 | ea03467c | Iustin Pop | @param job_id: the job identifier
|
867 | ea03467c | Iustin Pop | @rtype: str
|
868 | ea03467c | Iustin Pop | @return: the path to the job file
|
869 | ea03467c | Iustin Pop |
|
870 | ea03467c | Iustin Pop | """
|
871 | f1da30e6 | Michael Hanselmann | return os.path.join(constants.QUEUE_DIR, "job-%s" % job_id) |
872 | f1da30e6 | Michael Hanselmann | |
873 | 58b22b6e | Michael Hanselmann | @classmethod
|
874 | 58b22b6e | Michael Hanselmann | def _GetArchivedJobPath(cls, job_id): |
875 | ea03467c | Iustin Pop | """Returns the archived job file for a give job id.
|
876 | ea03467c | Iustin Pop |
|
877 | ea03467c | Iustin Pop | @type job_id: str
|
878 | ea03467c | Iustin Pop | @param job_id: the job identifier
|
879 | ea03467c | Iustin Pop | @rtype: str
|
880 | ea03467c | Iustin Pop | @return: the path to the archived job file
|
881 | ea03467c | Iustin Pop |
|
882 | ea03467c | Iustin Pop | """
|
883 | 58b22b6e | Michael Hanselmann | path = "%s/job-%s" % (cls._GetArchiveDirectory(job_id), job_id)
|
884 | 58b22b6e | Michael Hanselmann | return os.path.join(constants.JOB_QUEUE_ARCHIVE_DIR, path)
|
885 | 0cb94105 | Michael Hanselmann | |
886 | 85f03e0d | Michael Hanselmann | @classmethod
|
887 | 85f03e0d | Michael Hanselmann | def _ExtractJobID(cls, name): |
888 | ea03467c | Iustin Pop | """Extract the job id from a filename.
|
889 | ea03467c | Iustin Pop |
|
890 | ea03467c | Iustin Pop | @type name: str
|
891 | ea03467c | Iustin Pop | @param name: the job filename
|
892 | ea03467c | Iustin Pop | @rtype: job id or None
|
893 | ea03467c | Iustin Pop | @return: the job id corresponding to the given filename,
|
894 | ea03467c | Iustin Pop | or None if the filename does not represent a valid
|
895 | ea03467c | Iustin Pop | job file
|
896 | ea03467c | Iustin Pop |
|
897 | ea03467c | Iustin Pop | """
|
898 | 85f03e0d | Michael Hanselmann | m = cls._RE_JOB_FILE.match(name) |
899 | fae737ac | Michael Hanselmann | if m:
|
900 | fae737ac | Michael Hanselmann | return m.group(1) |
901 | fae737ac | Michael Hanselmann | else:
|
902 | fae737ac | Michael Hanselmann | return None |
903 | fae737ac | Michael Hanselmann | |
904 | 911a495b | Iustin Pop | def _GetJobIDsUnlocked(self, archived=False): |
905 | 911a495b | Iustin Pop | """Return all known job IDs.
|
906 | 911a495b | Iustin Pop |
|
907 | 911a495b | Iustin Pop | If the parameter archived is True, archived jobs IDs will be
|
908 | 911a495b | Iustin Pop | included. Currently this argument is unused.
|
909 | 911a495b | Iustin Pop |
|
910 | ac0930b9 | Iustin Pop | The method only looks at disk because it's a requirement that all
|
911 | ac0930b9 | Iustin Pop | jobs are present on disk (so in the _memcache we don't have any
|
912 | ac0930b9 | Iustin Pop | extra IDs).
|
913 | ac0930b9 | Iustin Pop |
|
914 | ea03467c | Iustin Pop | @rtype: list
|
915 | ea03467c | Iustin Pop | @return: the list of job IDs
|
916 | ea03467c | Iustin Pop |
|
917 | 911a495b | Iustin Pop | """
|
918 | fae737ac | Michael Hanselmann | jlist = [self._ExtractJobID(name) for name in self._ListJobFiles()] |
919 | 3b87986e | Iustin Pop | jlist = utils.NiceSort(jlist) |
920 | f0d874fe | Iustin Pop | return jlist
|
921 | 911a495b | Iustin Pop | |
922 | f1da30e6 | Michael Hanselmann | def _ListJobFiles(self): |
923 | ea03467c | Iustin Pop | """Returns the list of current job files.
|
924 | ea03467c | Iustin Pop |
|
925 | ea03467c | Iustin Pop | @rtype: list
|
926 | ea03467c | Iustin Pop | @return: the list of job file names
|
927 | ea03467c | Iustin Pop |
|
928 | ea03467c | Iustin Pop | """
|
929 | f1da30e6 | Michael Hanselmann | return [name for name in utils.ListVisibleFiles(constants.QUEUE_DIR) |
930 | f1da30e6 | Michael Hanselmann | if self._RE_JOB_FILE.match(name)] |
931 | f1da30e6 | Michael Hanselmann | |
932 | 911a495b | Iustin Pop | def _LoadJobUnlocked(self, job_id): |
933 | ea03467c | Iustin Pop | """Loads a job from the disk or memory.
|
934 | ea03467c | Iustin Pop |
|
935 | ea03467c | Iustin Pop | Given a job id, this will return the cached job object if
|
936 | ea03467c | Iustin Pop | existing, or try to load the job from the disk. If loading from
|
937 | ea03467c | Iustin Pop | disk, it will also add the job to the cache.
|
938 | ea03467c | Iustin Pop |
|
939 | ea03467c | Iustin Pop | @param job_id: the job id
|
940 | ea03467c | Iustin Pop | @rtype: L{_QueuedJob} or None
|
941 | ea03467c | Iustin Pop | @return: either None or the job object
|
942 | ea03467c | Iustin Pop |
|
943 | ea03467c | Iustin Pop | """
|
944 | 5685c1a5 | Michael Hanselmann | job = self._memcache.get(job_id, None) |
945 | 5685c1a5 | Michael Hanselmann | if job:
|
946 | 205d71fd | Michael Hanselmann | logging.debug("Found job %s in memcache", job_id)
|
947 | 5685c1a5 | Michael Hanselmann | return job
|
948 | ac0930b9 | Iustin Pop | |
949 | 911a495b | Iustin Pop | filepath = self._GetJobPath(job_id)
|
950 | f1da30e6 | Michael Hanselmann | logging.debug("Loading job from %s", filepath)
|
951 | f1da30e6 | Michael Hanselmann | try:
|
952 | 13998ef2 | Michael Hanselmann | raw_data = utils.ReadFile(filepath) |
953 | f1da30e6 | Michael Hanselmann | except IOError, err: |
954 | f1da30e6 | Michael Hanselmann | if err.errno in (errno.ENOENT, ): |
955 | f1da30e6 | Michael Hanselmann | return None |
956 | f1da30e6 | Michael Hanselmann | raise
|
957 | 13998ef2 | Michael Hanselmann | |
958 | 13998ef2 | Michael Hanselmann | data = serializer.LoadJson(raw_data) |
959 | f1da30e6 | Michael Hanselmann | |
960 | 94ed59a5 | Iustin Pop | try:
|
961 | 94ed59a5 | Iustin Pop | job = _QueuedJob.Restore(self, data)
|
962 | 94ed59a5 | Iustin Pop | except Exception, err: |
963 | 94ed59a5 | Iustin Pop | new_path = self._GetArchivedJobPath(job_id)
|
964 | 94ed59a5 | Iustin Pop | if filepath == new_path:
|
965 | 94ed59a5 | Iustin Pop | # job already archived (future case)
|
966 | 94ed59a5 | Iustin Pop | logging.exception("Can't parse job %s", job_id)
|
967 | 94ed59a5 | Iustin Pop | else:
|
968 | 94ed59a5 | Iustin Pop | # non-archived case
|
969 | 94ed59a5 | Iustin Pop | logging.exception("Can't parse job %s, will archive.", job_id)
|
970 | d7fd1f28 | Michael Hanselmann | self._RenameFilesUnlocked([(filepath, new_path)])
|
971 | 94ed59a5 | Iustin Pop | return None |
972 | 94ed59a5 | Iustin Pop | |
973 | ac0930b9 | Iustin Pop | self._memcache[job_id] = job
|
974 | 205d71fd | Michael Hanselmann | logging.debug("Added job %s to the cache", job_id)
|
975 | ac0930b9 | Iustin Pop | return job
|
976 | f1da30e6 | Michael Hanselmann | |
977 | f1da30e6 | Michael Hanselmann | def _GetJobsUnlocked(self, job_ids): |
978 | ea03467c | Iustin Pop | """Return a list of jobs based on their IDs.
|
979 | ea03467c | Iustin Pop |
|
980 | ea03467c | Iustin Pop | @type job_ids: list
|
981 | ea03467c | Iustin Pop | @param job_ids: either an empty list (meaning all jobs),
|
982 | ea03467c | Iustin Pop | or a list of job IDs
|
983 | ea03467c | Iustin Pop | @rtype: list
|
984 | ea03467c | Iustin Pop | @return: the list of job objects
|
985 | ea03467c | Iustin Pop |
|
986 | ea03467c | Iustin Pop | """
|
987 | 911a495b | Iustin Pop | if not job_ids: |
988 | 911a495b | Iustin Pop | job_ids = self._GetJobIDsUnlocked()
|
989 | f1da30e6 | Michael Hanselmann | |
990 | 911a495b | Iustin Pop | return [self._LoadJobUnlocked(job_id) for job_id in job_ids] |
991 | f1da30e6 | Michael Hanselmann | |
992 | 686d7433 | Iustin Pop | @staticmethod
|
993 | 686d7433 | Iustin Pop | def _IsQueueMarkedDrain(): |
994 | 686d7433 | Iustin Pop | """Check if the queue is marked from drain.
|
995 | 686d7433 | Iustin Pop |
|
996 | 686d7433 | Iustin Pop | This currently uses the queue drain file, which makes it a
|
997 | 686d7433 | Iustin Pop | per-node flag. In the future this can be moved to the config file.
|
998 | 686d7433 | Iustin Pop |
|
999 | ea03467c | Iustin Pop | @rtype: boolean
|
1000 | ea03467c | Iustin Pop | @return: True of the job queue is marked for draining
|
1001 | ea03467c | Iustin Pop |
|
1002 | 686d7433 | Iustin Pop | """
|
1003 | 686d7433 | Iustin Pop | return os.path.exists(constants.JOB_QUEUE_DRAIN_FILE)
|
1004 | 686d7433 | Iustin Pop | |
1005 | 3ccafd0e | Iustin Pop | @staticmethod
|
1006 | 3ccafd0e | Iustin Pop | def SetDrainFlag(drain_flag): |
1007 | 3ccafd0e | Iustin Pop | """Sets the drain flag for the queue.
|
1008 | 3ccafd0e | Iustin Pop |
|
1009 | 3ccafd0e | Iustin Pop | This is similar to the function L{backend.JobQueueSetDrainFlag},
|
1010 | 3ccafd0e | Iustin Pop | and in the future we might merge them.
|
1011 | 3ccafd0e | Iustin Pop |
|
1012 | ea03467c | Iustin Pop | @type drain_flag: boolean
|
1013 | 5bbd3f7f | Michael Hanselmann | @param drain_flag: Whether to set or unset the drain flag
|
1014 | ea03467c | Iustin Pop |
|
1015 | 3ccafd0e | Iustin Pop | """
|
1016 | 3ccafd0e | Iustin Pop | if drain_flag:
|
1017 | 3ccafd0e | Iustin Pop | utils.WriteFile(constants.JOB_QUEUE_DRAIN_FILE, data="", close=True) |
1018 | 3ccafd0e | Iustin Pop | else:
|
1019 | 3ccafd0e | Iustin Pop | utils.RemoveFile(constants.JOB_QUEUE_DRAIN_FILE) |
1020 | 3ccafd0e | Iustin Pop | return True |
1021 | 3ccafd0e | Iustin Pop | |
1022 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
1023 | 009e73d0 | Iustin Pop | def _SubmitJobUnlocked(self, job_id, ops): |
1024 | 85f03e0d | Michael Hanselmann | """Create and store a new job.
|
1025 | f1da30e6 | Michael Hanselmann |
|
1026 | 85f03e0d | Michael Hanselmann | This enters the job into our job queue and also puts it on the new
|
1027 | 85f03e0d | Michael Hanselmann | queue, in order for it to be picked up by the queue processors.
|
1028 | c3f0a12f | Iustin Pop |
|
1029 | 009e73d0 | Iustin Pop | @type job_id: job ID
|
1030 | 009e73d0 | Iustin Pop | @param jod_id: the job ID for the new job
|
1031 | c3f0a12f | Iustin Pop | @type ops: list
|
1032 | 205d71fd | Michael Hanselmann | @param ops: The list of OpCodes that will become the new job.
|
1033 | ea03467c | Iustin Pop | @rtype: job ID
|
1034 | ea03467c | Iustin Pop | @return: the job ID of the newly created job
|
1035 | ea03467c | Iustin Pop | @raise errors.JobQueueDrainError: if the job is marked for draining
|
1036 | c3f0a12f | Iustin Pop |
|
1037 | c3f0a12f | Iustin Pop | """
|
1038 | 686d7433 | Iustin Pop | if self._IsQueueMarkedDrain(): |
1039 | 2971c913 | Iustin Pop | raise errors.JobQueueDrainError("Job queue is drained, refusing job") |
1040 | f87b405e | Michael Hanselmann | |
1041 | f87b405e | Michael Hanselmann | # Check job queue size
|
1042 | f87b405e | Michael Hanselmann | size = len(self._ListJobFiles()) |
1043 | f87b405e | Michael Hanselmann | if size >= constants.JOB_QUEUE_SIZE_SOFT_LIMIT:
|
1044 | f87b405e | Michael Hanselmann | # TODO: Autoarchive jobs. Make sure it's not done on every job
|
1045 | f87b405e | Michael Hanselmann | # submission, though.
|
1046 | f87b405e | Michael Hanselmann | #size = ...
|
1047 | f87b405e | Michael Hanselmann | pass
|
1048 | f87b405e | Michael Hanselmann | |
1049 | f87b405e | Michael Hanselmann | if size >= constants.JOB_QUEUE_SIZE_HARD_LIMIT:
|
1050 | f87b405e | Michael Hanselmann | raise errors.JobQueueFull()
|
1051 | f87b405e | Michael Hanselmann | |
1052 | f1da30e6 | Michael Hanselmann | job = _QueuedJob(self, job_id, ops)
|
1053 | f1da30e6 | Michael Hanselmann | |
1054 | f1da30e6 | Michael Hanselmann | # Write to disk
|
1055 | 85f03e0d | Michael Hanselmann | self.UpdateJobUnlocked(job)
|
1056 | f1da30e6 | Michael Hanselmann | |
1057 | 5685c1a5 | Michael Hanselmann | logging.debug("Adding new job %s to the cache", job_id)
|
1058 | ac0930b9 | Iustin Pop | self._memcache[job_id] = job
|
1059 | ac0930b9 | Iustin Pop | |
1060 | 85f03e0d | Michael Hanselmann | # Add to worker pool
|
1061 | 85f03e0d | Michael Hanselmann | self._wpool.AddTask(job)
|
1062 | 85f03e0d | Michael Hanselmann | |
1063 | 85f03e0d | Michael Hanselmann | return job.id
|
1064 | f1da30e6 | Michael Hanselmann | |
1065 | 2971c913 | Iustin Pop | @utils.LockedMethod
|
1066 | 2971c913 | Iustin Pop | @_RequireOpenQueue
|
1067 | 2971c913 | Iustin Pop | def SubmitJob(self, ops): |
1068 | 2971c913 | Iustin Pop | """Create and store a new job.
|
1069 | 2971c913 | Iustin Pop |
|
1070 | 2971c913 | Iustin Pop | @see: L{_SubmitJobUnlocked}
|
1071 | 2971c913 | Iustin Pop |
|
1072 | 2971c913 | Iustin Pop | """
|
1073 | 009e73d0 | Iustin Pop | job_id = self._NewSerialsUnlocked(1)[0] |
1074 | 009e73d0 | Iustin Pop | return self._SubmitJobUnlocked(job_id, ops) |
1075 | 2971c913 | Iustin Pop | |
1076 | 2971c913 | Iustin Pop | @utils.LockedMethod
|
1077 | 2971c913 | Iustin Pop | @_RequireOpenQueue
|
1078 | 2971c913 | Iustin Pop | def SubmitManyJobs(self, jobs): |
1079 | 2971c913 | Iustin Pop | """Create and store multiple jobs.
|
1080 | 2971c913 | Iustin Pop |
|
1081 | 2971c913 | Iustin Pop | @see: L{_SubmitJobUnlocked}
|
1082 | 2971c913 | Iustin Pop |
|
1083 | 2971c913 | Iustin Pop | """
|
1084 | 2971c913 | Iustin Pop | results = [] |
1085 | 009e73d0 | Iustin Pop | all_job_ids = self._NewSerialsUnlocked(len(jobs)) |
1086 | 009e73d0 | Iustin Pop | for job_id, ops in zip(all_job_ids, jobs): |
1087 | 2971c913 | Iustin Pop | try:
|
1088 | 009e73d0 | Iustin Pop | data = self._SubmitJobUnlocked(job_id, ops)
|
1089 | 2971c913 | Iustin Pop | status = True
|
1090 | 2971c913 | Iustin Pop | except errors.GenericError, err:
|
1091 | 2971c913 | Iustin Pop | data = str(err)
|
1092 | 2971c913 | Iustin Pop | status = False
|
1093 | 2971c913 | Iustin Pop | results.append((status, data)) |
1094 | 2971c913 | Iustin Pop | |
1095 | 2971c913 | Iustin Pop | return results
|
1096 | 2971c913 | Iustin Pop | |
1097 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
1098 | 85f03e0d | Michael Hanselmann | def UpdateJobUnlocked(self, job): |
1099 | ea03467c | Iustin Pop | """Update a job's on disk storage.
|
1100 | ea03467c | Iustin Pop |
|
1101 | ea03467c | Iustin Pop | After a job has been modified, this function needs to be called in
|
1102 | ea03467c | Iustin Pop | order to write the changes to disk and replicate them to the other
|
1103 | ea03467c | Iustin Pop | nodes.
|
1104 | ea03467c | Iustin Pop |
|
1105 | ea03467c | Iustin Pop | @type job: L{_QueuedJob}
|
1106 | ea03467c | Iustin Pop | @param job: the changed job
|
1107 | ea03467c | Iustin Pop |
|
1108 | ea03467c | Iustin Pop | """
|
1109 | f1da30e6 | Michael Hanselmann | filename = self._GetJobPath(job.id)
|
1110 | 23752136 | Michael Hanselmann | data = serializer.DumpJson(job.Serialize(), indent=False)
|
1111 | f1da30e6 | Michael Hanselmann | logging.debug("Writing job %s to %s", job.id, filename)
|
1112 | 23752136 | Michael Hanselmann | self._WriteAndReplicateFileUnlocked(filename, data)
|
1113 | ac0930b9 | Iustin Pop | |
1114 | dfe57c22 | Michael Hanselmann | # Notify waiters about potential changes
|
1115 | 6c5a7090 | Michael Hanselmann | job.change.notifyAll() |
1116 | dfe57c22 | Michael Hanselmann | |
1117 | 6c5a7090 | Michael Hanselmann | @utils.LockedMethod
|
1118 | dfe57c22 | Michael Hanselmann | @_RequireOpenQueue
|
1119 | 5c735209 | Iustin Pop | def WaitForJobChanges(self, job_id, fields, prev_job_info, prev_log_serial, |
1120 | 5c735209 | Iustin Pop | timeout): |
1121 | 6c5a7090 | Michael Hanselmann | """Waits for changes in a job.
|
1122 | 6c5a7090 | Michael Hanselmann |
|
1123 | 6c5a7090 | Michael Hanselmann | @type job_id: string
|
1124 | 6c5a7090 | Michael Hanselmann | @param job_id: Job identifier
|
1125 | 6c5a7090 | Michael Hanselmann | @type fields: list of strings
|
1126 | 6c5a7090 | Michael Hanselmann | @param fields: Which fields to check for changes
|
1127 | 6c5a7090 | Michael Hanselmann | @type prev_job_info: list or None
|
1128 | 6c5a7090 | Michael Hanselmann | @param prev_job_info: Last job information returned
|
1129 | 6c5a7090 | Michael Hanselmann | @type prev_log_serial: int
|
1130 | 6c5a7090 | Michael Hanselmann | @param prev_log_serial: Last job message serial number
|
1131 | 5c735209 | Iustin Pop | @type timeout: float
|
1132 | 5c735209 | Iustin Pop | @param timeout: maximum time to wait
|
1133 | ea03467c | Iustin Pop | @rtype: tuple (job info, log entries)
|
1134 | ea03467c | Iustin Pop | @return: a tuple of the job information as required via
|
1135 | ea03467c | Iustin Pop | the fields parameter, and the log entries as a list
|
1136 | ea03467c | Iustin Pop |
|
1137 | ea03467c | Iustin Pop | if the job has not changed and the timeout has expired,
|
1138 | ea03467c | Iustin Pop | we instead return a special value,
|
1139 | ea03467c | Iustin Pop | L{constants.JOB_NOTCHANGED}, which should be interpreted
|
1140 | ea03467c | Iustin Pop | as such by the clients
|
1141 | 6c5a7090 | Michael Hanselmann |
|
1142 | 6c5a7090 | Michael Hanselmann | """
|
1143 | dfe57c22 | Michael Hanselmann | logging.debug("Waiting for changes in job %s", job_id)
|
1144 | 6e237482 | Michael Hanselmann | |
1145 | 6e237482 | Michael Hanselmann | job_info = None
|
1146 | 6e237482 | Michael Hanselmann | log_entries = None
|
1147 | 6e237482 | Michael Hanselmann | |
1148 | 5c735209 | Iustin Pop | end_time = time.time() + timeout |
1149 | dfe57c22 | Michael Hanselmann | while True: |
1150 | 5c735209 | Iustin Pop | delta_time = end_time - time.time() |
1151 | 5c735209 | Iustin Pop | if delta_time < 0: |
1152 | 5c735209 | Iustin Pop | return constants.JOB_NOTCHANGED
|
1153 | 5c735209 | Iustin Pop | |
1154 | 6c5a7090 | Michael Hanselmann | job = self._LoadJobUnlocked(job_id)
|
1155 | 6c5a7090 | Michael Hanselmann | if not job: |
1156 | 6c5a7090 | Michael Hanselmann | logging.debug("Job %s not found", job_id)
|
1157 | 6c5a7090 | Michael Hanselmann | break
|
1158 | dfe57c22 | Michael Hanselmann | |
1159 | 6c5a7090 | Michael Hanselmann | status = job.CalcStatus() |
1160 | 6c5a7090 | Michael Hanselmann | job_info = self._GetJobInfoUnlocked(job, fields)
|
1161 | 6c5a7090 | Michael Hanselmann | log_entries = job.GetLogEntries(prev_log_serial) |
1162 | dfe57c22 | Michael Hanselmann | |
1163 | dfe57c22 | Michael Hanselmann | # Serializing and deserializing data can cause type changes (e.g. from
|
1164 | dfe57c22 | Michael Hanselmann | # tuple to list) or precision loss. We're doing it here so that we get
|
1165 | dfe57c22 | Michael Hanselmann | # the same modifications as the data received from the client. Without
|
1166 | dfe57c22 | Michael Hanselmann | # this, the comparison afterwards might fail without the data being
|
1167 | dfe57c22 | Michael Hanselmann | # significantly different.
|
1168 | 6c5a7090 | Michael Hanselmann | job_info = serializer.LoadJson(serializer.DumpJson(job_info)) |
1169 | 6c5a7090 | Michael Hanselmann | log_entries = serializer.LoadJson(serializer.DumpJson(log_entries)) |
1170 | dfe57c22 | Michael Hanselmann | |
1171 | 6c5a7090 | Michael Hanselmann | if status not in (constants.JOB_STATUS_QUEUED, |
1172 | e92376d7 | Iustin Pop | constants.JOB_STATUS_RUNNING, |
1173 | e92376d7 | Iustin Pop | constants.JOB_STATUS_WAITLOCK): |
1174 | 6c5a7090 | Michael Hanselmann | # Don't even try to wait if the job is no longer running, there will be
|
1175 | 6c5a7090 | Michael Hanselmann | # no changes.
|
1176 | dfe57c22 | Michael Hanselmann | break
|
1177 | dfe57c22 | Michael Hanselmann | |
1178 | 6c5a7090 | Michael Hanselmann | if (prev_job_info != job_info or |
1179 | 6c5a7090 | Michael Hanselmann | (log_entries and prev_log_serial != log_entries[0][0])): |
1180 | 6c5a7090 | Michael Hanselmann | break
|
1181 | 6c5a7090 | Michael Hanselmann | |
1182 | 6c5a7090 | Michael Hanselmann | logging.debug("Waiting again")
|
1183 | 6c5a7090 | Michael Hanselmann | |
1184 | 6c5a7090 | Michael Hanselmann | # Release the queue lock while waiting
|
1185 | 5c735209 | Iustin Pop | job.change.wait(delta_time) |
1186 | dfe57c22 | Michael Hanselmann | |
1187 | dfe57c22 | Michael Hanselmann | logging.debug("Job %s changed", job_id)
|
1188 | dfe57c22 | Michael Hanselmann | |
1189 | 6e237482 | Michael Hanselmann | if job_info is None and log_entries is None: |
1190 | 6e237482 | Michael Hanselmann | return None |
1191 | 6e237482 | Michael Hanselmann | else:
|
1192 | 6e237482 | Michael Hanselmann | return (job_info, log_entries)
|
1193 | dfe57c22 | Michael Hanselmann | |
1194 | f1da30e6 | Michael Hanselmann | @utils.LockedMethod
|
1195 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
1196 | 188c5e0a | Michael Hanselmann | def CancelJob(self, job_id): |
1197 | 188c5e0a | Michael Hanselmann | """Cancels a job.
|
1198 | 188c5e0a | Michael Hanselmann |
|
1199 | ea03467c | Iustin Pop | This will only succeed if the job has not started yet.
|
1200 | ea03467c | Iustin Pop |
|
1201 | 188c5e0a | Michael Hanselmann | @type job_id: string
|
1202 | ea03467c | Iustin Pop | @param job_id: job ID of job to be cancelled.
|
1203 | 188c5e0a | Michael Hanselmann |
|
1204 | 188c5e0a | Michael Hanselmann | """
|
1205 | fbf0262f | Michael Hanselmann | logging.info("Cancelling job %s", job_id)
|
1206 | 188c5e0a | Michael Hanselmann | |
1207 | 85f03e0d | Michael Hanselmann | job = self._LoadJobUnlocked(job_id)
|
1208 | 188c5e0a | Michael Hanselmann | if not job: |
1209 | 188c5e0a | Michael Hanselmann | logging.debug("Job %s not found", job_id)
|
1210 | fbf0262f | Michael Hanselmann | return (False, "Job %s not found" % job_id) |
1211 | fbf0262f | Michael Hanselmann | |
1212 | fbf0262f | Michael Hanselmann | job_status = job.CalcStatus() |
1213 | 188c5e0a | Michael Hanselmann | |
1214 | fbf0262f | Michael Hanselmann | if job_status not in (constants.JOB_STATUS_QUEUED, |
1215 | fbf0262f | Michael Hanselmann | constants.JOB_STATUS_WAITLOCK): |
1216 | a9e97393 | Michael Hanselmann | logging.debug("Job %s is no longer waiting in the queue", job.id)
|
1217 | a9e97393 | Michael Hanselmann | return (False, "Job %s is no longer waiting in the queue" % job.id) |
1218 | fbf0262f | Michael Hanselmann | |
1219 | fbf0262f | Michael Hanselmann | if job_status == constants.JOB_STATUS_QUEUED:
|
1220 | fbf0262f | Michael Hanselmann | self.CancelJobUnlocked(job)
|
1221 | fbf0262f | Michael Hanselmann | return (True, "Job %s canceled" % job.id) |
1222 | 188c5e0a | Michael Hanselmann | |
1223 | fbf0262f | Michael Hanselmann | elif job_status == constants.JOB_STATUS_WAITLOCK:
|
1224 | fbf0262f | Michael Hanselmann | # The worker will notice the new status and cancel the job
|
1225 | fbf0262f | Michael Hanselmann | try:
|
1226 | 34327f51 | Iustin Pop | job.MarkUnfinishedOps(constants.OP_STATUS_CANCELING, None)
|
1227 | fbf0262f | Michael Hanselmann | finally:
|
1228 | fbf0262f | Michael Hanselmann | self.UpdateJobUnlocked(job)
|
1229 | fbf0262f | Michael Hanselmann | return (True, "Job %s will be canceled" % job.id) |
1230 | fbf0262f | Michael Hanselmann | |
1231 | fbf0262f | Michael Hanselmann | @_RequireOpenQueue
|
1232 | fbf0262f | Michael Hanselmann | def CancelJobUnlocked(self, job): |
1233 | fbf0262f | Michael Hanselmann | """Marks a job as canceled.
|
1234 | fbf0262f | Michael Hanselmann |
|
1235 | fbf0262f | Michael Hanselmann | """
|
1236 | 85f03e0d | Michael Hanselmann | try:
|
1237 | 34327f51 | Iustin Pop | job.MarkUnfinishedOps(constants.OP_STATUS_CANCELED, |
1238 | 34327f51 | Iustin Pop | "Job canceled by request")
|
1239 | 85f03e0d | Michael Hanselmann | finally:
|
1240 | 85f03e0d | Michael Hanselmann | self.UpdateJobUnlocked(job)
|
1241 | 188c5e0a | Michael Hanselmann | |
1242 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
1243 | d7fd1f28 | Michael Hanselmann | def _ArchiveJobsUnlocked(self, jobs): |
1244 | d7fd1f28 | Michael Hanselmann | """Archives jobs.
|
1245 | c609f802 | Michael Hanselmann |
|
1246 | d7fd1f28 | Michael Hanselmann | @type jobs: list of L{_QueuedJob}
|
1247 | 25e7b43f | Iustin Pop | @param jobs: Job objects
|
1248 | d7fd1f28 | Michael Hanselmann | @rtype: int
|
1249 | d7fd1f28 | Michael Hanselmann | @return: Number of archived jobs
|
1250 | c609f802 | Michael Hanselmann |
|
1251 | c609f802 | Michael Hanselmann | """
|
1252 | d7fd1f28 | Michael Hanselmann | archive_jobs = [] |
1253 | d7fd1f28 | Michael Hanselmann | rename_files = [] |
1254 | d7fd1f28 | Michael Hanselmann | for job in jobs: |
1255 | d7fd1f28 | Michael Hanselmann | if job.CalcStatus() not in (constants.JOB_STATUS_CANCELED, |
1256 | d7fd1f28 | Michael Hanselmann | constants.JOB_STATUS_SUCCESS, |
1257 | d7fd1f28 | Michael Hanselmann | constants.JOB_STATUS_ERROR): |
1258 | d7fd1f28 | Michael Hanselmann | logging.debug("Job %s is not yet done", job.id)
|
1259 | d7fd1f28 | Michael Hanselmann | continue
|
1260 | c609f802 | Michael Hanselmann | |
1261 | d7fd1f28 | Michael Hanselmann | archive_jobs.append(job) |
1262 | c609f802 | Michael Hanselmann | |
1263 | d7fd1f28 | Michael Hanselmann | old = self._GetJobPath(job.id)
|
1264 | d7fd1f28 | Michael Hanselmann | new = self._GetArchivedJobPath(job.id)
|
1265 | d7fd1f28 | Michael Hanselmann | rename_files.append((old, new)) |
1266 | c609f802 | Michael Hanselmann | |
1267 | d7fd1f28 | Michael Hanselmann | # TODO: What if 1..n files fail to rename?
|
1268 | d7fd1f28 | Michael Hanselmann | self._RenameFilesUnlocked(rename_files)
|
1269 | f1da30e6 | Michael Hanselmann | |
1270 | d7fd1f28 | Michael Hanselmann | logging.debug("Successfully archived job(s) %s",
|
1271 | d7fd1f28 | Michael Hanselmann | ", ".join(job.id for job in archive_jobs)) |
1272 | d7fd1f28 | Michael Hanselmann | |
1273 | d7fd1f28 | Michael Hanselmann | return len(archive_jobs) |
1274 | 78d12585 | Michael Hanselmann | |
1275 | 07cd723a | Iustin Pop | @utils.LockedMethod
|
1276 | 07cd723a | Iustin Pop | @_RequireOpenQueue
|
1277 | 07cd723a | Iustin Pop | def ArchiveJob(self, job_id): |
1278 | 07cd723a | Iustin Pop | """Archives a job.
|
1279 | 07cd723a | Iustin Pop |
|
1280 | 25e7b43f | Iustin Pop | This is just a wrapper over L{_ArchiveJobsUnlocked}.
|
1281 | ea03467c | Iustin Pop |
|
1282 | 07cd723a | Iustin Pop | @type job_id: string
|
1283 | 07cd723a | Iustin Pop | @param job_id: Job ID of job to be archived.
|
1284 | 78d12585 | Michael Hanselmann | @rtype: bool
|
1285 | 78d12585 | Michael Hanselmann | @return: Whether job was archived
|
1286 | 07cd723a | Iustin Pop |
|
1287 | 07cd723a | Iustin Pop | """
|
1288 | 78d12585 | Michael Hanselmann | logging.info("Archiving job %s", job_id)
|
1289 | 78d12585 | Michael Hanselmann | |
1290 | 78d12585 | Michael Hanselmann | job = self._LoadJobUnlocked(job_id)
|
1291 | 78d12585 | Michael Hanselmann | if not job: |
1292 | 78d12585 | Michael Hanselmann | logging.debug("Job %s not found", job_id)
|
1293 | 78d12585 | Michael Hanselmann | return False |
1294 | 78d12585 | Michael Hanselmann | |
1295 | 5278185a | Iustin Pop | return self._ArchiveJobsUnlocked([job]) == 1 |
1296 | 07cd723a | Iustin Pop | |
1297 | 07cd723a | Iustin Pop | @utils.LockedMethod
|
1298 | 07cd723a | Iustin Pop | @_RequireOpenQueue
|
1299 | f8ad5591 | Michael Hanselmann | def AutoArchiveJobs(self, age, timeout): |
1300 | 07cd723a | Iustin Pop | """Archives all jobs based on age.
|
1301 | 07cd723a | Iustin Pop |
|
1302 | 07cd723a | Iustin Pop | The method will archive all jobs which are older than the age
|
1303 | 07cd723a | Iustin Pop | parameter. For jobs that don't have an end timestamp, the start
|
1304 | 07cd723a | Iustin Pop | timestamp will be considered. The special '-1' age will cause
|
1305 | 07cd723a | Iustin Pop | archival of all jobs (that are not running or queued).
|
1306 | 07cd723a | Iustin Pop |
|
1307 | 07cd723a | Iustin Pop | @type age: int
|
1308 | 07cd723a | Iustin Pop | @param age: the minimum age in seconds
|
1309 | 07cd723a | Iustin Pop |
|
1310 | 07cd723a | Iustin Pop | """
|
1311 | 07cd723a | Iustin Pop | logging.info("Archiving jobs with age more than %s seconds", age)
|
1312 | 07cd723a | Iustin Pop | |
1313 | 07cd723a | Iustin Pop | now = time.time() |
1314 | f8ad5591 | Michael Hanselmann | end_time = now + timeout |
1315 | f8ad5591 | Michael Hanselmann | archived_count = 0
|
1316 | f8ad5591 | Michael Hanselmann | last_touched = 0
|
1317 | f8ad5591 | Michael Hanselmann | |
1318 | f8ad5591 | Michael Hanselmann | all_job_ids = self._GetJobIDsUnlocked(archived=False) |
1319 | d7fd1f28 | Michael Hanselmann | pending = [] |
1320 | f8ad5591 | Michael Hanselmann | for idx, job_id in enumerate(all_job_ids): |
1321 | f8ad5591 | Michael Hanselmann | last_touched = idx |
1322 | f8ad5591 | Michael Hanselmann | |
1323 | d7fd1f28 | Michael Hanselmann | # Not optimal because jobs could be pending
|
1324 | d7fd1f28 | Michael Hanselmann | # TODO: Measure average duration for job archival and take number of
|
1325 | d7fd1f28 | Michael Hanselmann | # pending jobs into account.
|
1326 | f8ad5591 | Michael Hanselmann | if time.time() > end_time:
|
1327 | f8ad5591 | Michael Hanselmann | break
|
1328 | f8ad5591 | Michael Hanselmann | |
1329 | 78d12585 | Michael Hanselmann | # Returns None if the job failed to load
|
1330 | 78d12585 | Michael Hanselmann | job = self._LoadJobUnlocked(job_id)
|
1331 | f8ad5591 | Michael Hanselmann | if job:
|
1332 | f8ad5591 | Michael Hanselmann | if job.end_timestamp is None: |
1333 | f8ad5591 | Michael Hanselmann | if job.start_timestamp is None: |
1334 | f8ad5591 | Michael Hanselmann | job_age = job.received_timestamp |
1335 | f8ad5591 | Michael Hanselmann | else:
|
1336 | f8ad5591 | Michael Hanselmann | job_age = job.start_timestamp |
1337 | 07cd723a | Iustin Pop | else:
|
1338 | f8ad5591 | Michael Hanselmann | job_age = job.end_timestamp |
1339 | f8ad5591 | Michael Hanselmann | |
1340 | f8ad5591 | Michael Hanselmann | if age == -1 or now - job_age[0] > age: |
1341 | d7fd1f28 | Michael Hanselmann | pending.append(job) |
1342 | d7fd1f28 | Michael Hanselmann | |
1343 | d7fd1f28 | Michael Hanselmann | # Archive 10 jobs at a time
|
1344 | d7fd1f28 | Michael Hanselmann | if len(pending) >= 10: |
1345 | d7fd1f28 | Michael Hanselmann | archived_count += self._ArchiveJobsUnlocked(pending)
|
1346 | d7fd1f28 | Michael Hanselmann | pending = [] |
1347 | f8ad5591 | Michael Hanselmann | |
1348 | d7fd1f28 | Michael Hanselmann | if pending:
|
1349 | d7fd1f28 | Michael Hanselmann | archived_count += self._ArchiveJobsUnlocked(pending)
|
1350 | 07cd723a | Iustin Pop | |
1351 | f8ad5591 | Michael Hanselmann | return (archived_count, len(all_job_ids) - last_touched - 1) |
1352 | 07cd723a | Iustin Pop | |
1353 | 85f03e0d | Michael Hanselmann | def _GetJobInfoUnlocked(self, job, fields): |
1354 | ea03467c | Iustin Pop | """Returns information about a job.
|
1355 | ea03467c | Iustin Pop |
|
1356 | ea03467c | Iustin Pop | @type job: L{_QueuedJob}
|
1357 | ea03467c | Iustin Pop | @param job: the job which we query
|
1358 | ea03467c | Iustin Pop | @type fields: list
|
1359 | ea03467c | Iustin Pop | @param fields: names of fields to return
|
1360 | ea03467c | Iustin Pop | @rtype: list
|
1361 | ea03467c | Iustin Pop | @return: list with one element for each field
|
1362 | ea03467c | Iustin Pop | @raise errors.OpExecError: when an invalid field
|
1363 | ea03467c | Iustin Pop | has been passed
|
1364 | ea03467c | Iustin Pop |
|
1365 | ea03467c | Iustin Pop | """
|
1366 | e2715f69 | Michael Hanselmann | row = [] |
1367 | e2715f69 | Michael Hanselmann | for fname in fields: |
1368 | e2715f69 | Michael Hanselmann | if fname == "id": |
1369 | e2715f69 | Michael Hanselmann | row.append(job.id) |
1370 | e2715f69 | Michael Hanselmann | elif fname == "status": |
1371 | 85f03e0d | Michael Hanselmann | row.append(job.CalcStatus()) |
1372 | af30b2fd | Michael Hanselmann | elif fname == "ops": |
1373 | 85f03e0d | Michael Hanselmann | row.append([op.input.__getstate__() for op in job.ops]) |
1374 | af30b2fd | Michael Hanselmann | elif fname == "opresult": |
1375 | 85f03e0d | Michael Hanselmann | row.append([op.result for op in job.ops]) |
1376 | af30b2fd | Michael Hanselmann | elif fname == "opstatus": |
1377 | 85f03e0d | Michael Hanselmann | row.append([op.status for op in job.ops]) |
1378 | 5b23c34c | Iustin Pop | elif fname == "oplog": |
1379 | 5b23c34c | Iustin Pop | row.append([op.log for op in job.ops]) |
1380 | c56ec146 | Iustin Pop | elif fname == "opstart": |
1381 | c56ec146 | Iustin Pop | row.append([op.start_timestamp for op in job.ops]) |
1382 | c56ec146 | Iustin Pop | elif fname == "opend": |
1383 | c56ec146 | Iustin Pop | row.append([op.end_timestamp for op in job.ops]) |
1384 | c56ec146 | Iustin Pop | elif fname == "received_ts": |
1385 | c56ec146 | Iustin Pop | row.append(job.received_timestamp) |
1386 | c56ec146 | Iustin Pop | elif fname == "start_ts": |
1387 | c56ec146 | Iustin Pop | row.append(job.start_timestamp) |
1388 | c56ec146 | Iustin Pop | elif fname == "end_ts": |
1389 | c56ec146 | Iustin Pop | row.append(job.end_timestamp) |
1390 | 1d2dcdfd | Michael Hanselmann | elif fname == "lock_status": |
1391 | 1d2dcdfd | Michael Hanselmann | row.append(job.lock_status) |
1392 | 60dd1473 | Iustin Pop | elif fname == "summary": |
1393 | 60dd1473 | Iustin Pop | row.append([op.input.Summary() for op in job.ops]) |
1394 | e2715f69 | Michael Hanselmann | else:
|
1395 | e2715f69 | Michael Hanselmann | raise errors.OpExecError("Invalid job query field '%s'" % fname) |
1396 | e2715f69 | Michael Hanselmann | return row
|
1397 | e2715f69 | Michael Hanselmann | |
1398 | 85f03e0d | Michael Hanselmann | @utils.LockedMethod
|
1399 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
1400 | e2715f69 | Michael Hanselmann | def QueryJobs(self, job_ids, fields): |
1401 | e2715f69 | Michael Hanselmann | """Returns a list of jobs in queue.
|
1402 | e2715f69 | Michael Hanselmann |
|
1403 | ea03467c | Iustin Pop | This is a wrapper of L{_GetJobsUnlocked}, which actually does the
|
1404 | ea03467c | Iustin Pop | processing for each job.
|
1405 | ea03467c | Iustin Pop |
|
1406 | ea03467c | Iustin Pop | @type job_ids: list
|
1407 | ea03467c | Iustin Pop | @param job_ids: sequence of job identifiers or None for all
|
1408 | ea03467c | Iustin Pop | @type fields: list
|
1409 | ea03467c | Iustin Pop | @param fields: names of fields to return
|
1410 | ea03467c | Iustin Pop | @rtype: list
|
1411 | ea03467c | Iustin Pop | @return: list one element per job, each element being list with
|
1412 | ea03467c | Iustin Pop | the requested fields
|
1413 | e2715f69 | Michael Hanselmann |
|
1414 | e2715f69 | Michael Hanselmann | """
|
1415 | 85f03e0d | Michael Hanselmann | jobs = [] |
1416 | e2715f69 | Michael Hanselmann | |
1417 | 85f03e0d | Michael Hanselmann | for job in self._GetJobsUnlocked(job_ids): |
1418 | 85f03e0d | Michael Hanselmann | if job is None: |
1419 | 85f03e0d | Michael Hanselmann | jobs.append(None)
|
1420 | 85f03e0d | Michael Hanselmann | else:
|
1421 | 85f03e0d | Michael Hanselmann | jobs.append(self._GetJobInfoUnlocked(job, fields))
|
1422 | e2715f69 | Michael Hanselmann | |
1423 | 85f03e0d | Michael Hanselmann | return jobs
|
1424 | e2715f69 | Michael Hanselmann | |
1425 | f1da30e6 | Michael Hanselmann | @utils.LockedMethod
|
1426 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
1427 | e2715f69 | Michael Hanselmann | def Shutdown(self): |
1428 | e2715f69 | Michael Hanselmann | """Stops the job queue.
|
1429 | e2715f69 | Michael Hanselmann |
|
1430 | ea03467c | Iustin Pop | This shutdowns all the worker threads an closes the queue.
|
1431 | ea03467c | Iustin Pop |
|
1432 | e2715f69 | Michael Hanselmann | """
|
1433 | e2715f69 | Michael Hanselmann | self._wpool.TerminateWorkers()
|
1434 | 85f03e0d | Michael Hanselmann | |
1435 | 04ab05ce | Michael Hanselmann | self._queue_lock.Close()
|
1436 | 04ab05ce | Michael Hanselmann | self._queue_lock = None |