root / lib / jqueue.py @ 48c8887b
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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 | 85f03e0d | Michael Hanselmann | def __init__(self, op): |
84 | ea03467c | Iustin Pop | """Constructor for the _QuededOpCode.
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85 | ea03467c | Iustin Pop |
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86 | ea03467c | Iustin Pop | @type op: L{opcodes.OpCode}
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87 | ea03467c | Iustin Pop | @param op: the opcode we encapsulate
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88 | ea03467c | Iustin Pop |
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89 | ea03467c | Iustin Pop | """
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90 | 85f03e0d | Michael Hanselmann | self.input = op
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91 | 85f03e0d | Michael Hanselmann | self.status = constants.OP_STATUS_QUEUED
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92 | 85f03e0d | Michael Hanselmann | self.result = None |
93 | 85f03e0d | Michael Hanselmann | self.log = []
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94 | 70552c46 | Michael Hanselmann | self.start_timestamp = None |
95 | 70552c46 | Michael Hanselmann | self.end_timestamp = None |
96 | f1da30e6 | Michael Hanselmann | |
97 | f1da30e6 | Michael Hanselmann | @classmethod
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98 | f1da30e6 | Michael Hanselmann | def Restore(cls, state): |
99 | ea03467c | Iustin Pop | """Restore the _QueuedOpCode from the serialized form.
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100 | ea03467c | Iustin Pop |
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101 | ea03467c | Iustin Pop | @type state: dict
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102 | ea03467c | Iustin Pop | @param state: the serialized state
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103 | ea03467c | Iustin Pop | @rtype: _QueuedOpCode
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104 | ea03467c | Iustin Pop | @return: a new _QueuedOpCode instance
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105 | ea03467c | Iustin Pop |
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106 | ea03467c | Iustin Pop | """
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107 | 85f03e0d | Michael Hanselmann | obj = _QueuedOpCode.__new__(cls) |
108 | 85f03e0d | Michael Hanselmann | obj.input = opcodes.OpCode.LoadOpCode(state["input"])
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109 | 85f03e0d | Michael Hanselmann | obj.status = state["status"]
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110 | 85f03e0d | Michael Hanselmann | obj.result = state["result"]
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111 | 85f03e0d | Michael Hanselmann | obj.log = state["log"]
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112 | 70552c46 | Michael Hanselmann | obj.start_timestamp = state.get("start_timestamp", None) |
113 | 70552c46 | Michael Hanselmann | obj.end_timestamp = state.get("end_timestamp", None) |
114 | f1da30e6 | Michael Hanselmann | return obj
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115 | f1da30e6 | Michael Hanselmann | |
116 | f1da30e6 | Michael Hanselmann | def Serialize(self): |
117 | ea03467c | Iustin Pop | """Serializes this _QueuedOpCode.
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118 | ea03467c | Iustin Pop |
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119 | ea03467c | Iustin Pop | @rtype: dict
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120 | ea03467c | Iustin Pop | @return: the dictionary holding the serialized state
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121 | ea03467c | Iustin Pop |
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122 | ea03467c | Iustin Pop | """
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123 | 6c5a7090 | Michael Hanselmann | return {
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124 | 6c5a7090 | Michael Hanselmann | "input": self.input.__getstate__(), |
125 | 6c5a7090 | Michael Hanselmann | "status": self.status, |
126 | 6c5a7090 | Michael Hanselmann | "result": self.result, |
127 | 6c5a7090 | Michael Hanselmann | "log": self.log, |
128 | 70552c46 | Michael Hanselmann | "start_timestamp": self.start_timestamp, |
129 | 70552c46 | Michael Hanselmann | "end_timestamp": self.end_timestamp, |
130 | 6c5a7090 | Michael Hanselmann | } |
131 | f1048938 | Iustin Pop | |
132 | e2715f69 | Michael Hanselmann | |
133 | e2715f69 | Michael Hanselmann | class _QueuedJob(object): |
134 | e2715f69 | Michael Hanselmann | """In-memory job representation.
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135 | e2715f69 | Michael Hanselmann |
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136 | ea03467c | Iustin Pop | This is what we use to track the user-submitted jobs. Locking must
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137 | ea03467c | Iustin Pop | be taken care of by users of this class.
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138 | ea03467c | Iustin Pop |
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139 | ea03467c | Iustin Pop | @type queue: L{JobQueue}
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140 | ea03467c | Iustin Pop | @ivar queue: the parent queue
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141 | ea03467c | Iustin Pop | @ivar id: the job ID
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142 | ea03467c | Iustin Pop | @type ops: list
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143 | ea03467c | Iustin Pop | @ivar ops: the list of _QueuedOpCode that constitute the job
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144 | ea03467c | Iustin Pop | @type run_op_index: int
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145 | ea03467c | Iustin Pop | @ivar run_op_index: the currently executing opcode, or -1 if
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146 | ea03467c | Iustin Pop | we didn't yet start executing
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147 | ea03467c | Iustin Pop | @type log_serial: int
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148 | ea03467c | Iustin Pop | @ivar log_serial: holds the index for the next log entry
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149 | ea03467c | Iustin Pop | @ivar received_timestamp: the timestamp for when the job was received
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150 | ea03467c | Iustin Pop | @ivar start_timestmap: the timestamp for start of execution
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151 | ea03467c | Iustin Pop | @ivar end_timestamp: the timestamp for end of execution
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152 | ea03467c | Iustin Pop | @ivar change: a Condition variable we use for waiting for job changes
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153 | e2715f69 | Michael Hanselmann |
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154 | e2715f69 | Michael Hanselmann | """
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155 | 85f03e0d | Michael Hanselmann | def __init__(self, queue, job_id, ops): |
156 | ea03467c | Iustin Pop | """Constructor for the _QueuedJob.
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157 | ea03467c | Iustin Pop |
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158 | ea03467c | Iustin Pop | @type queue: L{JobQueue}
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159 | ea03467c | Iustin Pop | @param queue: our parent queue
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160 | ea03467c | Iustin Pop | @type job_id: job_id
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161 | ea03467c | Iustin Pop | @param job_id: our job id
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162 | ea03467c | Iustin Pop | @type ops: list
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163 | ea03467c | Iustin Pop | @param ops: the list of opcodes we hold, which will be encapsulated
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164 | ea03467c | Iustin Pop | in _QueuedOpCodes
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165 | ea03467c | Iustin Pop |
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166 | ea03467c | Iustin Pop | """
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167 | e2715f69 | Michael Hanselmann | if not ops: |
168 | ea03467c | Iustin Pop | # TODO: use a better exception
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169 | e2715f69 | Michael Hanselmann | raise Exception("No opcodes") |
170 | e2715f69 | Michael Hanselmann | |
171 | 85f03e0d | Michael Hanselmann | self.queue = queue
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172 | f1da30e6 | Michael Hanselmann | self.id = job_id
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173 | 85f03e0d | Michael Hanselmann | self.ops = [_QueuedOpCode(op) for op in ops] |
174 | 85f03e0d | Michael Hanselmann | self.run_op_index = -1 |
175 | 6c5a7090 | Michael Hanselmann | self.log_serial = 0 |
176 | c56ec146 | Iustin Pop | self.received_timestamp = TimeStampNow()
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177 | c56ec146 | Iustin Pop | self.start_timestamp = None |
178 | c56ec146 | Iustin Pop | self.end_timestamp = None |
179 | 6c5a7090 | Michael Hanselmann | |
180 | 6c5a7090 | Michael Hanselmann | # Condition to wait for changes
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181 | 6c5a7090 | Michael Hanselmann | self.change = threading.Condition(self.queue._lock) |
182 | f1da30e6 | Michael Hanselmann | |
183 | f1da30e6 | Michael Hanselmann | @classmethod
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184 | 85f03e0d | Michael Hanselmann | def Restore(cls, queue, state): |
185 | ea03467c | Iustin Pop | """Restore a _QueuedJob from serialized state:
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186 | ea03467c | Iustin Pop |
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187 | ea03467c | Iustin Pop | @type queue: L{JobQueue}
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188 | ea03467c | Iustin Pop | @param queue: to which queue the restored job belongs
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189 | ea03467c | Iustin Pop | @type state: dict
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190 | ea03467c | Iustin Pop | @param state: the serialized state
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191 | ea03467c | Iustin Pop | @rtype: _JobQueue
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192 | ea03467c | Iustin Pop | @return: the restored _JobQueue instance
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193 | ea03467c | Iustin Pop |
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194 | ea03467c | Iustin Pop | """
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195 | 85f03e0d | Michael Hanselmann | obj = _QueuedJob.__new__(cls) |
196 | 85f03e0d | Michael Hanselmann | obj.queue = queue |
197 | 85f03e0d | Michael Hanselmann | obj.id = state["id"]
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198 | 85f03e0d | Michael Hanselmann | obj.run_op_index = state["run_op_index"]
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199 | c56ec146 | Iustin Pop | obj.received_timestamp = state.get("received_timestamp", None) |
200 | c56ec146 | Iustin Pop | obj.start_timestamp = state.get("start_timestamp", None) |
201 | c56ec146 | Iustin Pop | obj.end_timestamp = state.get("end_timestamp", None) |
202 | 6c5a7090 | Michael Hanselmann | |
203 | 6c5a7090 | Michael Hanselmann | obj.ops = [] |
204 | 6c5a7090 | Michael Hanselmann | obj.log_serial = 0
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205 | 6c5a7090 | Michael Hanselmann | for op_state in state["ops"]: |
206 | 6c5a7090 | Michael Hanselmann | op = _QueuedOpCode.Restore(op_state) |
207 | 6c5a7090 | Michael Hanselmann | for log_entry in op.log: |
208 | 6c5a7090 | Michael Hanselmann | obj.log_serial = max(obj.log_serial, log_entry[0]) |
209 | 6c5a7090 | Michael Hanselmann | obj.ops.append(op) |
210 | 6c5a7090 | Michael Hanselmann | |
211 | 6c5a7090 | Michael Hanselmann | # Condition to wait for changes
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212 | 6c5a7090 | Michael Hanselmann | obj.change = threading.Condition(obj.queue._lock) |
213 | 6c5a7090 | Michael Hanselmann | |
214 | f1da30e6 | Michael Hanselmann | return obj
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215 | f1da30e6 | Michael Hanselmann | |
216 | f1da30e6 | Michael Hanselmann | def Serialize(self): |
217 | ea03467c | Iustin Pop | """Serialize the _JobQueue instance.
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218 | ea03467c | Iustin Pop |
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219 | ea03467c | Iustin Pop | @rtype: dict
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220 | ea03467c | Iustin Pop | @return: the serialized state
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221 | ea03467c | Iustin Pop |
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222 | ea03467c | Iustin Pop | """
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223 | f1da30e6 | Michael Hanselmann | return {
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224 | f1da30e6 | Michael Hanselmann | "id": self.id, |
225 | 85f03e0d | Michael Hanselmann | "ops": [op.Serialize() for op in self.ops], |
226 | f1048938 | Iustin Pop | "run_op_index": self.run_op_index, |
227 | c56ec146 | Iustin Pop | "start_timestamp": self.start_timestamp, |
228 | c56ec146 | Iustin Pop | "end_timestamp": self.end_timestamp, |
229 | c56ec146 | Iustin Pop | "received_timestamp": self.received_timestamp, |
230 | f1da30e6 | Michael Hanselmann | } |
231 | f1da30e6 | Michael Hanselmann | |
232 | 85f03e0d | Michael Hanselmann | def CalcStatus(self): |
233 | ea03467c | Iustin Pop | """Compute the status of this job.
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234 | ea03467c | Iustin Pop |
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235 | ea03467c | Iustin Pop | This function iterates over all the _QueuedOpCodes in the job and
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236 | ea03467c | Iustin Pop | based on their status, computes the job status.
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237 | ea03467c | Iustin Pop |
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238 | ea03467c | Iustin Pop | The algorithm is:
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239 | ea03467c | Iustin Pop | - if we find a cancelled, or finished with error, the job
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240 | ea03467c | Iustin Pop | status will be the same
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241 | ea03467c | Iustin Pop | - otherwise, the last opcode with the status one of:
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242 | ea03467c | Iustin Pop | - waitlock
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243 | fbf0262f | Michael Hanselmann | - canceling
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244 | ea03467c | Iustin Pop | - running
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245 | ea03467c | Iustin Pop |
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246 | ea03467c | Iustin Pop | will determine the job status
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247 | ea03467c | Iustin Pop |
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248 | ea03467c | Iustin Pop | - otherwise, it means either all opcodes are queued, or success,
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249 | ea03467c | Iustin Pop | and the job status will be the same
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250 | ea03467c | Iustin Pop |
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251 | ea03467c | Iustin Pop | @return: the job status
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252 | ea03467c | Iustin Pop |
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253 | ea03467c | Iustin Pop | """
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254 | e2715f69 | Michael Hanselmann | status = constants.JOB_STATUS_QUEUED |
255 | e2715f69 | Michael Hanselmann | |
256 | e2715f69 | Michael Hanselmann | all_success = True
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257 | 85f03e0d | Michael Hanselmann | for op in self.ops: |
258 | 85f03e0d | Michael Hanselmann | if op.status == constants.OP_STATUS_SUCCESS:
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259 | e2715f69 | Michael Hanselmann | continue
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260 | e2715f69 | Michael Hanselmann | |
261 | e2715f69 | Michael Hanselmann | all_success = False
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262 | e2715f69 | Michael Hanselmann | |
263 | 85f03e0d | Michael Hanselmann | if op.status == constants.OP_STATUS_QUEUED:
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264 | e2715f69 | Michael Hanselmann | pass
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265 | e92376d7 | Iustin Pop | elif op.status == constants.OP_STATUS_WAITLOCK:
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266 | e92376d7 | Iustin Pop | status = constants.JOB_STATUS_WAITLOCK |
267 | 85f03e0d | Michael Hanselmann | elif op.status == constants.OP_STATUS_RUNNING:
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268 | e2715f69 | Michael Hanselmann | status = constants.JOB_STATUS_RUNNING |
269 | fbf0262f | Michael Hanselmann | elif op.status == constants.OP_STATUS_CANCELING:
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270 | fbf0262f | Michael Hanselmann | status = constants.JOB_STATUS_CANCELING |
271 | fbf0262f | Michael Hanselmann | break
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272 | 85f03e0d | Michael Hanselmann | elif op.status == constants.OP_STATUS_ERROR:
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273 | f1da30e6 | Michael Hanselmann | status = constants.JOB_STATUS_ERROR |
274 | f1da30e6 | Michael Hanselmann | # The whole job fails if one opcode failed
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275 | f1da30e6 | Michael Hanselmann | break
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276 | 85f03e0d | Michael Hanselmann | elif op.status == constants.OP_STATUS_CANCELED:
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277 | 4cb1d919 | Michael Hanselmann | status = constants.OP_STATUS_CANCELED |
278 | 4cb1d919 | Michael Hanselmann | break
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279 | e2715f69 | Michael Hanselmann | |
280 | e2715f69 | Michael Hanselmann | if all_success:
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281 | e2715f69 | Michael Hanselmann | status = constants.JOB_STATUS_SUCCESS |
282 | e2715f69 | Michael Hanselmann | |
283 | e2715f69 | Michael Hanselmann | return status
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284 | e2715f69 | Michael Hanselmann | |
285 | 6c5a7090 | Michael Hanselmann | def GetLogEntries(self, newer_than): |
286 | ea03467c | Iustin Pop | """Selectively returns the log entries.
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287 | ea03467c | Iustin Pop |
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288 | ea03467c | Iustin Pop | @type newer_than: None or int
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289 | 5bbd3f7f | Michael Hanselmann | @param newer_than: if this is None, return all log entries,
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290 | ea03467c | Iustin Pop | otherwise return only the log entries with serial higher
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291 | ea03467c | Iustin Pop | than this value
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292 | ea03467c | Iustin Pop | @rtype: list
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293 | ea03467c | Iustin Pop | @return: the list of the log entries selected
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294 | ea03467c | Iustin Pop |
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295 | ea03467c | Iustin Pop | """
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296 | 6c5a7090 | Michael Hanselmann | if newer_than is None: |
297 | 6c5a7090 | Michael Hanselmann | serial = -1
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298 | 6c5a7090 | Michael Hanselmann | else:
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299 | 6c5a7090 | Michael Hanselmann | serial = newer_than |
300 | 6c5a7090 | Michael Hanselmann | |
301 | 6c5a7090 | Michael Hanselmann | entries = [] |
302 | 6c5a7090 | Michael Hanselmann | for op in self.ops: |
303 | 63712a09 | Iustin Pop | entries.extend(filter(lambda entry: entry[0] > serial, op.log)) |
304 | 6c5a7090 | Michael Hanselmann | |
305 | 6c5a7090 | Michael Hanselmann | return entries
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306 | 6c5a7090 | Michael Hanselmann | |
307 | f1048938 | Iustin Pop | |
308 | 85f03e0d | Michael Hanselmann | class _JobQueueWorker(workerpool.BaseWorker): |
309 | ea03467c | Iustin Pop | """The actual job workers.
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310 | ea03467c | Iustin Pop |
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311 | ea03467c | Iustin Pop | """
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312 | e92376d7 | Iustin Pop | def _NotifyStart(self): |
313 | e92376d7 | Iustin Pop | """Mark the opcode as running, not lock-waiting.
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314 | e92376d7 | Iustin Pop |
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315 | e92376d7 | Iustin Pop | This is called from the mcpu code as a notifier function, when the
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316 | e92376d7 | Iustin Pop | LU is finally about to start the Exec() method. Of course, to have
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317 | e92376d7 | Iustin Pop | end-user visible results, the opcode must be initially (before
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318 | e92376d7 | Iustin Pop | calling into Processor.ExecOpCode) set to OP_STATUS_WAITLOCK.
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319 | e92376d7 | Iustin Pop |
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320 | e92376d7 | Iustin Pop | """
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321 | e92376d7 | Iustin Pop | assert self.queue, "Queue attribute is missing" |
322 | e92376d7 | Iustin Pop | assert self.opcode, "Opcode attribute is missing" |
323 | e92376d7 | Iustin Pop | |
324 | e92376d7 | Iustin Pop | self.queue.acquire()
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325 | e92376d7 | Iustin Pop | try:
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326 | fbf0262f | Michael Hanselmann | assert self.opcode.status in (constants.OP_STATUS_WAITLOCK, |
327 | fbf0262f | Michael Hanselmann | constants.OP_STATUS_CANCELING) |
328 | fbf0262f | Michael Hanselmann | |
329 | fbf0262f | Michael Hanselmann | # Cancel here if we were asked to
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330 | fbf0262f | Michael Hanselmann | if self.opcode.status == constants.OP_STATUS_CANCELING: |
331 | fbf0262f | Michael Hanselmann | raise CancelJob()
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332 | fbf0262f | Michael Hanselmann | |
333 | e92376d7 | Iustin Pop | self.opcode.status = constants.OP_STATUS_RUNNING
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334 | e92376d7 | Iustin Pop | finally:
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335 | e92376d7 | Iustin Pop | self.queue.release()
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336 | e92376d7 | Iustin Pop | |
337 | 85f03e0d | Michael Hanselmann | def RunTask(self, job): |
338 | e2715f69 | Michael Hanselmann | """Job executor.
|
339 | e2715f69 | Michael Hanselmann |
|
340 | 6c5a7090 | Michael Hanselmann | This functions processes a job. It is closely tied to the _QueuedJob and
|
341 | 6c5a7090 | Michael Hanselmann | _QueuedOpCode classes.
|
342 | e2715f69 | Michael Hanselmann |
|
343 | ea03467c | Iustin Pop | @type job: L{_QueuedJob}
|
344 | ea03467c | Iustin Pop | @param job: the job to be processed
|
345 | ea03467c | Iustin Pop |
|
346 | e2715f69 | Michael Hanselmann | """
|
347 | d21d09d6 | Iustin Pop | logging.info("Worker %s processing job %s",
|
348 | e2715f69 | Michael Hanselmann | self.worker_id, job.id)
|
349 | 5bdce580 | Michael Hanselmann | proc = mcpu.Processor(self.pool.queue.context)
|
350 | e92376d7 | Iustin Pop | self.queue = queue = job.queue
|
351 | e2715f69 | Michael Hanselmann | try:
|
352 | 85f03e0d | Michael Hanselmann | try:
|
353 | 85f03e0d | Michael Hanselmann | count = len(job.ops)
|
354 | 85f03e0d | Michael Hanselmann | for idx, op in enumerate(job.ops): |
355 | d21d09d6 | Iustin Pop | op_summary = op.input.Summary() |
356 | 85f03e0d | Michael Hanselmann | try:
|
357 | d21d09d6 | Iustin Pop | logging.info("Op %s/%s: Starting opcode %s", idx + 1, count, |
358 | d21d09d6 | Iustin Pop | op_summary) |
359 | 85f03e0d | Michael Hanselmann | |
360 | 85f03e0d | Michael Hanselmann | queue.acquire() |
361 | 85f03e0d | Michael Hanselmann | try:
|
362 | df0fb067 | Iustin Pop | if op.status == constants.OP_STATUS_CANCELED:
|
363 | df0fb067 | Iustin Pop | raise CancelJob()
|
364 | fbf0262f | Michael Hanselmann | assert op.status == constants.OP_STATUS_QUEUED
|
365 | 85f03e0d | Michael Hanselmann | job.run_op_index = idx |
366 | e92376d7 | Iustin Pop | op.status = constants.OP_STATUS_WAITLOCK |
367 | 85f03e0d | Michael Hanselmann | op.result = None
|
368 | 70552c46 | Michael Hanselmann | op.start_timestamp = TimeStampNow() |
369 | c56ec146 | Iustin Pop | if idx == 0: # first opcode |
370 | c56ec146 | Iustin Pop | job.start_timestamp = op.start_timestamp |
371 | 85f03e0d | Michael Hanselmann | queue.UpdateJobUnlocked(job) |
372 | 85f03e0d | Michael Hanselmann | |
373 | 38206f3c | Iustin Pop | input_opcode = op.input |
374 | 85f03e0d | Michael Hanselmann | finally:
|
375 | 85f03e0d | Michael Hanselmann | queue.release() |
376 | 85f03e0d | Michael Hanselmann | |
377 | dfe57c22 | Michael Hanselmann | def _Log(*args): |
378 | 6c5a7090 | Michael Hanselmann | """Append a log entry.
|
379 | 6c5a7090 | Michael Hanselmann |
|
380 | 6c5a7090 | Michael Hanselmann | """
|
381 | 6c5a7090 | Michael Hanselmann | assert len(args) < 3 |
382 | 6c5a7090 | Michael Hanselmann | |
383 | 6c5a7090 | Michael Hanselmann | if len(args) == 1: |
384 | 6c5a7090 | Michael Hanselmann | log_type = constants.ELOG_MESSAGE |
385 | 6c5a7090 | Michael Hanselmann | log_msg = args[0]
|
386 | 6c5a7090 | Michael Hanselmann | else:
|
387 | 6c5a7090 | Michael Hanselmann | log_type, log_msg = args |
388 | 6c5a7090 | Michael Hanselmann | |
389 | 6c5a7090 | Michael Hanselmann | # The time is split to make serialization easier and not lose
|
390 | 6c5a7090 | Michael Hanselmann | # precision.
|
391 | 6c5a7090 | Michael Hanselmann | timestamp = utils.SplitTime(time.time()) |
392 | dfe57c22 | Michael Hanselmann | |
393 | 6c5a7090 | Michael Hanselmann | queue.acquire() |
394 | dfe57c22 | Michael Hanselmann | try:
|
395 | 6c5a7090 | Michael Hanselmann | job.log_serial += 1
|
396 | 6c5a7090 | Michael Hanselmann | op.log.append((job.log_serial, timestamp, log_type, log_msg)) |
397 | 6c5a7090 | Michael Hanselmann | |
398 | dfe57c22 | Michael Hanselmann | job.change.notifyAll() |
399 | dfe57c22 | Michael Hanselmann | finally:
|
400 | 6c5a7090 | Michael Hanselmann | queue.release() |
401 | dfe57c22 | Michael Hanselmann | |
402 | 6c5a7090 | Michael Hanselmann | # Make sure not to hold lock while _Log is called
|
403 | e92376d7 | Iustin Pop | self.opcode = op
|
404 | e92376d7 | Iustin Pop | result = proc.ExecOpCode(input_opcode, _Log, self._NotifyStart)
|
405 | 85f03e0d | Michael Hanselmann | |
406 | 85f03e0d | Michael Hanselmann | queue.acquire() |
407 | 85f03e0d | Michael Hanselmann | try:
|
408 | 85f03e0d | Michael Hanselmann | op.status = constants.OP_STATUS_SUCCESS |
409 | 85f03e0d | Michael Hanselmann | op.result = result |
410 | 70552c46 | Michael Hanselmann | op.end_timestamp = TimeStampNow() |
411 | 85f03e0d | Michael Hanselmann | queue.UpdateJobUnlocked(job) |
412 | 85f03e0d | Michael Hanselmann | finally:
|
413 | 85f03e0d | Michael Hanselmann | queue.release() |
414 | 85f03e0d | Michael Hanselmann | |
415 | d21d09d6 | Iustin Pop | logging.info("Op %s/%s: Successfully finished opcode %s",
|
416 | d21d09d6 | Iustin Pop | idx + 1, count, op_summary)
|
417 | fbf0262f | Michael Hanselmann | except CancelJob:
|
418 | fbf0262f | Michael Hanselmann | # Will be handled further up
|
419 | fbf0262f | Michael Hanselmann | raise
|
420 | 85f03e0d | Michael Hanselmann | except Exception, err: |
421 | 85f03e0d | Michael Hanselmann | queue.acquire() |
422 | 85f03e0d | Michael Hanselmann | try:
|
423 | 85f03e0d | Michael Hanselmann | try:
|
424 | 85f03e0d | Michael Hanselmann | op.status = constants.OP_STATUS_ERROR |
425 | 85f03e0d | Michael Hanselmann | op.result = str(err)
|
426 | 70552c46 | Michael Hanselmann | op.end_timestamp = TimeStampNow() |
427 | 0f6be82a | Iustin Pop | logging.info("Op %s/%s: Error in opcode %s: %s",
|
428 | 0f6be82a | Iustin Pop | idx + 1, count, op_summary, err)
|
429 | 85f03e0d | Michael Hanselmann | finally:
|
430 | 85f03e0d | Michael Hanselmann | queue.UpdateJobUnlocked(job) |
431 | 85f03e0d | Michael Hanselmann | finally:
|
432 | 85f03e0d | Michael Hanselmann | queue.release() |
433 | 85f03e0d | Michael Hanselmann | raise
|
434 | 85f03e0d | Michael Hanselmann | |
435 | fbf0262f | Michael Hanselmann | except CancelJob:
|
436 | fbf0262f | Michael Hanselmann | queue.acquire() |
437 | fbf0262f | Michael Hanselmann | try:
|
438 | fbf0262f | Michael Hanselmann | queue.CancelJobUnlocked(job) |
439 | fbf0262f | Michael Hanselmann | finally:
|
440 | fbf0262f | Michael Hanselmann | queue.release() |
441 | 85f03e0d | Michael Hanselmann | except errors.GenericError, err:
|
442 | 85f03e0d | Michael Hanselmann | logging.exception("Ganeti exception")
|
443 | 85f03e0d | Michael Hanselmann | except:
|
444 | 85f03e0d | Michael Hanselmann | logging.exception("Unhandled exception")
|
445 | e2715f69 | Michael Hanselmann | finally:
|
446 | 85f03e0d | Michael Hanselmann | queue.acquire() |
447 | 85f03e0d | Michael Hanselmann | try:
|
448 | 65548ed5 | Michael Hanselmann | try:
|
449 | 65548ed5 | Michael Hanselmann | job.run_op_idx = -1
|
450 | c56ec146 | Iustin Pop | job.end_timestamp = TimeStampNow() |
451 | 65548ed5 | Michael Hanselmann | queue.UpdateJobUnlocked(job) |
452 | 65548ed5 | Michael Hanselmann | finally:
|
453 | 65548ed5 | Michael Hanselmann | job_id = job.id |
454 | 65548ed5 | Michael Hanselmann | status = job.CalcStatus() |
455 | 85f03e0d | Michael Hanselmann | finally:
|
456 | 85f03e0d | Michael Hanselmann | queue.release() |
457 | d21d09d6 | Iustin Pop | logging.info("Worker %s finished job %s, status = %s",
|
458 | d21d09d6 | Iustin Pop | self.worker_id, job_id, status)
|
459 | e2715f69 | Michael Hanselmann | |
460 | e2715f69 | Michael Hanselmann | |
461 | e2715f69 | Michael Hanselmann | class _JobQueueWorkerPool(workerpool.WorkerPool): |
462 | ea03467c | Iustin Pop | """Simple class implementing a job-processing workerpool.
|
463 | ea03467c | Iustin Pop |
|
464 | ea03467c | Iustin Pop | """
|
465 | 5bdce580 | Michael Hanselmann | def __init__(self, queue): |
466 | e2715f69 | Michael Hanselmann | super(_JobQueueWorkerPool, self).__init__(JOBQUEUE_THREADS, |
467 | e2715f69 | Michael Hanselmann | _JobQueueWorker) |
468 | 5bdce580 | Michael Hanselmann | self.queue = queue
|
469 | e2715f69 | Michael Hanselmann | |
470 | e2715f69 | Michael Hanselmann | |
471 | 85f03e0d | Michael Hanselmann | class JobQueue(object): |
472 | 5bbd3f7f | Michael Hanselmann | """Queue used to manage the jobs.
|
473 | ea03467c | Iustin Pop |
|
474 | ea03467c | Iustin Pop | @cvar _RE_JOB_FILE: regex matching the valid job file names
|
475 | ea03467c | Iustin Pop |
|
476 | ea03467c | Iustin Pop | """
|
477 | bac5ffc3 | Oleksiy Mishchenko | _RE_JOB_FILE = re.compile(r"^job-(%s)$" % constants.JOB_ID_TEMPLATE)
|
478 | f1da30e6 | Michael Hanselmann | |
479 | db37da70 | Michael Hanselmann | def _RequireOpenQueue(fn): |
480 | db37da70 | Michael Hanselmann | """Decorator for "public" functions.
|
481 | db37da70 | Michael Hanselmann |
|
482 | ea03467c | Iustin Pop | This function should be used for all 'public' functions. That is,
|
483 | ea03467c | Iustin Pop | functions usually called from other classes.
|
484 | db37da70 | Michael Hanselmann |
|
485 | ea03467c | Iustin Pop | @warning: Use this decorator only after utils.LockedMethod!
|
486 | db37da70 | Michael Hanselmann |
|
487 | ea03467c | Iustin Pop | Example::
|
488 | db37da70 | Michael Hanselmann | @utils.LockedMethod
|
489 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
490 | db37da70 | Michael Hanselmann | def Example(self):
|
491 | db37da70 | Michael Hanselmann | pass
|
492 | db37da70 | Michael Hanselmann |
|
493 | db37da70 | Michael Hanselmann | """
|
494 | db37da70 | Michael Hanselmann | def wrapper(self, *args, **kwargs): |
495 | 04ab05ce | Michael Hanselmann | assert self._queue_lock is not None, "Queue should be open" |
496 | db37da70 | Michael Hanselmann | return fn(self, *args, **kwargs) |
497 | db37da70 | Michael Hanselmann | return wrapper
|
498 | db37da70 | Michael Hanselmann | |
499 | 85f03e0d | Michael Hanselmann | def __init__(self, context): |
500 | ea03467c | Iustin Pop | """Constructor for JobQueue.
|
501 | ea03467c | Iustin Pop |
|
502 | ea03467c | Iustin Pop | The constructor will initialize the job queue object and then
|
503 | ea03467c | Iustin Pop | start loading the current jobs from disk, either for starting them
|
504 | ea03467c | Iustin Pop | (if they were queue) or for aborting them (if they were already
|
505 | ea03467c | Iustin Pop | running).
|
506 | ea03467c | Iustin Pop |
|
507 | ea03467c | Iustin Pop | @type context: GanetiContext
|
508 | ea03467c | Iustin Pop | @param context: the context object for access to the configuration
|
509 | ea03467c | Iustin Pop | data and other ganeti objects
|
510 | ea03467c | Iustin Pop |
|
511 | ea03467c | Iustin Pop | """
|
512 | 5bdce580 | Michael Hanselmann | self.context = context
|
513 | 5685c1a5 | Michael Hanselmann | self._memcache = weakref.WeakValueDictionary()
|
514 | c3f0a12f | Iustin Pop | self._my_hostname = utils.HostInfo().name
|
515 | f1da30e6 | Michael Hanselmann | |
516 | 85f03e0d | Michael Hanselmann | # Locking
|
517 | 85f03e0d | Michael Hanselmann | self._lock = threading.Lock()
|
518 | 85f03e0d | Michael Hanselmann | self.acquire = self._lock.acquire |
519 | 85f03e0d | Michael Hanselmann | self.release = self._lock.release |
520 | 85f03e0d | Michael Hanselmann | |
521 | 04ab05ce | Michael Hanselmann | # Initialize
|
522 | 5d6fb8eb | Michael Hanselmann | self._queue_lock = jstore.InitAndVerifyQueue(must_lock=True) |
523 | f1da30e6 | Michael Hanselmann | |
524 | 04ab05ce | Michael Hanselmann | # Read serial file
|
525 | 04ab05ce | Michael Hanselmann | self._last_serial = jstore.ReadSerial()
|
526 | 04ab05ce | Michael Hanselmann | assert self._last_serial is not None, ("Serial file was modified between" |
527 | 04ab05ce | Michael Hanselmann | " check in jstore and here")
|
528 | c4beba1c | Iustin Pop | |
529 | 23752136 | Michael Hanselmann | # Get initial list of nodes
|
530 | 99aabbed | Iustin Pop | self._nodes = dict((n.name, n.primary_ip) |
531 | 59303563 | Iustin Pop | for n in self.context.cfg.GetAllNodesInfo().values() |
532 | 59303563 | Iustin Pop | if n.master_candidate)
|
533 | 8e00939c | Michael Hanselmann | |
534 | 8e00939c | Michael Hanselmann | # Remove master node
|
535 | 8e00939c | Michael Hanselmann | try:
|
536 | 99aabbed | Iustin Pop | del self._nodes[self._my_hostname] |
537 | 33987705 | Iustin Pop | except KeyError: |
538 | 8e00939c | Michael Hanselmann | pass
|
539 | 23752136 | Michael Hanselmann | |
540 | 23752136 | Michael Hanselmann | # TODO: Check consistency across nodes
|
541 | 23752136 | Michael Hanselmann | |
542 | 85f03e0d | Michael Hanselmann | # Setup worker pool
|
543 | 5bdce580 | Michael Hanselmann | self._wpool = _JobQueueWorkerPool(self) |
544 | 85f03e0d | Michael Hanselmann | try:
|
545 | 16714921 | Michael Hanselmann | # We need to lock here because WorkerPool.AddTask() may start a job while
|
546 | 16714921 | Michael Hanselmann | # we're still doing our work.
|
547 | 16714921 | Michael Hanselmann | self.acquire()
|
548 | 16714921 | Michael Hanselmann | try:
|
549 | 711b5124 | Michael Hanselmann | logging.info("Inspecting job queue")
|
550 | 711b5124 | Michael Hanselmann | |
551 | 711b5124 | Michael Hanselmann | all_job_ids = self._GetJobIDsUnlocked()
|
552 | b7cb9024 | Michael Hanselmann | jobs_count = len(all_job_ids)
|
553 | 711b5124 | Michael Hanselmann | lastinfo = time.time() |
554 | 711b5124 | Michael Hanselmann | for idx, job_id in enumerate(all_job_ids): |
555 | 711b5124 | Michael Hanselmann | # Give an update every 1000 jobs or 10 seconds
|
556 | b7cb9024 | Michael Hanselmann | if (idx % 1000 == 0 or time.time() >= (lastinfo + 10.0) or |
557 | b7cb9024 | Michael Hanselmann | idx == (jobs_count - 1)):
|
558 | 711b5124 | Michael Hanselmann | logging.info("Job queue inspection: %d/%d (%0.1f %%)",
|
559 | b7cb9024 | Michael Hanselmann | idx, jobs_count - 1, 100.0 * (idx + 1) / jobs_count) |
560 | 711b5124 | Michael Hanselmann | lastinfo = time.time() |
561 | 711b5124 | Michael Hanselmann | |
562 | 711b5124 | Michael Hanselmann | job = self._LoadJobUnlocked(job_id)
|
563 | 711b5124 | Michael Hanselmann | |
564 | 16714921 | Michael Hanselmann | # a failure in loading the job can cause 'None' to be returned
|
565 | 16714921 | Michael Hanselmann | if job is None: |
566 | 16714921 | Michael Hanselmann | continue
|
567 | 94ed59a5 | Iustin Pop | |
568 | 16714921 | Michael Hanselmann | status = job.CalcStatus() |
569 | 85f03e0d | Michael Hanselmann | |
570 | 16714921 | Michael Hanselmann | if status in (constants.JOB_STATUS_QUEUED, ): |
571 | 16714921 | Michael Hanselmann | self._wpool.AddTask(job)
|
572 | 85f03e0d | Michael Hanselmann | |
573 | 16714921 | Michael Hanselmann | elif status in (constants.JOB_STATUS_RUNNING, |
574 | fbf0262f | Michael Hanselmann | constants.JOB_STATUS_WAITLOCK, |
575 | fbf0262f | Michael Hanselmann | constants.JOB_STATUS_CANCELING): |
576 | 16714921 | Michael Hanselmann | logging.warning("Unfinished job %s found: %s", job.id, job)
|
577 | 16714921 | Michael Hanselmann | try:
|
578 | 16714921 | Michael Hanselmann | for op in job.ops: |
579 | 16714921 | Michael Hanselmann | op.status = constants.OP_STATUS_ERROR |
580 | 16714921 | Michael Hanselmann | op.result = "Unclean master daemon shutdown"
|
581 | 16714921 | Michael Hanselmann | finally:
|
582 | 16714921 | Michael Hanselmann | self.UpdateJobUnlocked(job)
|
583 | 711b5124 | Michael Hanselmann | |
584 | 711b5124 | Michael Hanselmann | logging.info("Job queue inspection finished")
|
585 | 16714921 | Michael Hanselmann | finally:
|
586 | 16714921 | Michael Hanselmann | self.release()
|
587 | 16714921 | Michael Hanselmann | except:
|
588 | 16714921 | Michael Hanselmann | self._wpool.TerminateWorkers()
|
589 | 16714921 | Michael Hanselmann | raise
|
590 | 85f03e0d | Michael Hanselmann | |
591 | d2e03a33 | Michael Hanselmann | @utils.LockedMethod
|
592 | d2e03a33 | Michael Hanselmann | @_RequireOpenQueue
|
593 | 99aabbed | Iustin Pop | def AddNode(self, node): |
594 | 99aabbed | Iustin Pop | """Register a new node with the queue.
|
595 | 99aabbed | Iustin Pop |
|
596 | 99aabbed | Iustin Pop | @type node: L{objects.Node}
|
597 | 99aabbed | Iustin Pop | @param node: the node object to be added
|
598 | 99aabbed | Iustin Pop |
|
599 | 99aabbed | Iustin Pop | """
|
600 | 99aabbed | Iustin Pop | node_name = node.name |
601 | d2e03a33 | Michael Hanselmann | assert node_name != self._my_hostname |
602 | 23752136 | Michael Hanselmann | |
603 | 9f774ee8 | Michael Hanselmann | # Clean queue directory on added node
|
604 | a3811745 | Michael Hanselmann | rpc.RpcRunner.call_jobqueue_purge(node_name) |
605 | 23752136 | Michael Hanselmann | |
606 | 59303563 | Iustin Pop | if not node.master_candidate: |
607 | 59303563 | Iustin Pop | # remove if existing, ignoring errors
|
608 | 59303563 | Iustin Pop | self._nodes.pop(node_name, None) |
609 | 59303563 | Iustin Pop | # and skip the replication of the job ids
|
610 | 59303563 | Iustin Pop | return
|
611 | 59303563 | Iustin Pop | |
612 | d2e03a33 | Michael Hanselmann | # Upload the whole queue excluding archived jobs
|
613 | d2e03a33 | Michael Hanselmann | files = [self._GetJobPath(job_id) for job_id in self._GetJobIDsUnlocked()] |
614 | 23752136 | Michael Hanselmann | |
615 | d2e03a33 | Michael Hanselmann | # Upload current serial file
|
616 | d2e03a33 | Michael Hanselmann | files.append(constants.JOB_QUEUE_SERIAL_FILE) |
617 | d2e03a33 | Michael Hanselmann | |
618 | d2e03a33 | Michael Hanselmann | for file_name in files: |
619 | 9f774ee8 | Michael Hanselmann | # Read file content
|
620 | 9f774ee8 | Michael Hanselmann | fd = open(file_name, "r") |
621 | 9f774ee8 | Michael Hanselmann | try:
|
622 | 9f774ee8 | Michael Hanselmann | content = fd.read() |
623 | 9f774ee8 | Michael Hanselmann | finally:
|
624 | 9f774ee8 | Michael Hanselmann | fd.close() |
625 | 9f774ee8 | Michael Hanselmann | |
626 | a3811745 | Michael Hanselmann | result = rpc.RpcRunner.call_jobqueue_update([node_name], |
627 | a3811745 | Michael Hanselmann | [node.primary_ip], |
628 | a3811745 | Michael Hanselmann | file_name, content) |
629 | d2e03a33 | Michael Hanselmann | if not result[node_name]: |
630 | d2e03a33 | Michael Hanselmann | logging.error("Failed to upload %s to %s", file_name, node_name)
|
631 | d2e03a33 | Michael Hanselmann | |
632 | 99aabbed | Iustin Pop | self._nodes[node_name] = node.primary_ip
|
633 | d2e03a33 | Michael Hanselmann | |
634 | d2e03a33 | Michael Hanselmann | @utils.LockedMethod
|
635 | d2e03a33 | Michael Hanselmann | @_RequireOpenQueue
|
636 | d2e03a33 | Michael Hanselmann | def RemoveNode(self, node_name): |
637 | ea03467c | Iustin Pop | """Callback called when removing nodes from the cluster.
|
638 | ea03467c | Iustin Pop |
|
639 | ea03467c | Iustin Pop | @type node_name: str
|
640 | ea03467c | Iustin Pop | @param node_name: the name of the node to remove
|
641 | ea03467c | Iustin Pop |
|
642 | ea03467c | Iustin Pop | """
|
643 | 23752136 | Michael Hanselmann | try:
|
644 | d2e03a33 | Michael Hanselmann | # The queue is removed by the "leave node" RPC call.
|
645 | 99aabbed | Iustin Pop | del self._nodes[node_name] |
646 | d2e03a33 | Michael Hanselmann | except KeyError: |
647 | 23752136 | Michael Hanselmann | pass
|
648 | 23752136 | Michael Hanselmann | |
649 | e74798c1 | Michael Hanselmann | def _CheckRpcResult(self, result, nodes, failmsg): |
650 | ea03467c | Iustin Pop | """Verifies the status of an RPC call.
|
651 | ea03467c | Iustin Pop |
|
652 | ea03467c | Iustin Pop | Since we aim to keep consistency should this node (the current
|
653 | ea03467c | Iustin Pop | master) fail, we will log errors if our rpc fail, and especially
|
654 | 5bbd3f7f | Michael Hanselmann | log the case when more than half of the nodes fails.
|
655 | ea03467c | Iustin Pop |
|
656 | ea03467c | Iustin Pop | @param result: the data as returned from the rpc call
|
657 | ea03467c | Iustin Pop | @type nodes: list
|
658 | ea03467c | Iustin Pop | @param nodes: the list of nodes we made the call to
|
659 | ea03467c | Iustin Pop | @type failmsg: str
|
660 | ea03467c | Iustin Pop | @param failmsg: the identifier to be used for logging
|
661 | ea03467c | Iustin Pop |
|
662 | ea03467c | Iustin Pop | """
|
663 | e74798c1 | Michael Hanselmann | failed = [] |
664 | e74798c1 | Michael Hanselmann | success = [] |
665 | e74798c1 | Michael Hanselmann | |
666 | e74798c1 | Michael Hanselmann | for node in nodes: |
667 | e74798c1 | Michael Hanselmann | if result[node]:
|
668 | e74798c1 | Michael Hanselmann | success.append(node) |
669 | e74798c1 | Michael Hanselmann | else:
|
670 | e74798c1 | Michael Hanselmann | failed.append(node) |
671 | e74798c1 | Michael Hanselmann | |
672 | e74798c1 | Michael Hanselmann | if failed:
|
673 | e74798c1 | Michael Hanselmann | logging.error("%s failed on %s", failmsg, ", ".join(failed)) |
674 | e74798c1 | Michael Hanselmann | |
675 | e74798c1 | Michael Hanselmann | # +1 for the master node
|
676 | e74798c1 | Michael Hanselmann | if (len(success) + 1) < len(failed): |
677 | e74798c1 | Michael Hanselmann | # TODO: Handle failing nodes
|
678 | e74798c1 | Michael Hanselmann | logging.error("More than half of the nodes failed")
|
679 | e74798c1 | Michael Hanselmann | |
680 | 99aabbed | Iustin Pop | def _GetNodeIp(self): |
681 | 99aabbed | Iustin Pop | """Helper for returning the node name/ip list.
|
682 | 99aabbed | Iustin Pop |
|
683 | ea03467c | Iustin Pop | @rtype: (list, list)
|
684 | ea03467c | Iustin Pop | @return: a tuple of two lists, the first one with the node
|
685 | ea03467c | Iustin Pop | names and the second one with the node addresses
|
686 | ea03467c | Iustin Pop |
|
687 | 99aabbed | Iustin Pop | """
|
688 | 99aabbed | Iustin Pop | name_list = self._nodes.keys()
|
689 | 99aabbed | Iustin Pop | addr_list = [self._nodes[name] for name in name_list] |
690 | 99aabbed | Iustin Pop | return name_list, addr_list
|
691 | 99aabbed | Iustin Pop | |
692 | 8e00939c | Michael Hanselmann | def _WriteAndReplicateFileUnlocked(self, file_name, data): |
693 | 8e00939c | Michael Hanselmann | """Writes a file locally and then replicates it to all nodes.
|
694 | 8e00939c | Michael Hanselmann |
|
695 | ea03467c | Iustin Pop | This function will replace the contents of a file on the local
|
696 | ea03467c | Iustin Pop | node and then replicate it to all the other nodes we have.
|
697 | ea03467c | Iustin Pop |
|
698 | ea03467c | Iustin Pop | @type file_name: str
|
699 | ea03467c | Iustin Pop | @param file_name: the path of the file to be replicated
|
700 | ea03467c | Iustin Pop | @type data: str
|
701 | ea03467c | Iustin Pop | @param data: the new contents of the file
|
702 | ea03467c | Iustin Pop |
|
703 | 8e00939c | Michael Hanselmann | """
|
704 | 8e00939c | Michael Hanselmann | utils.WriteFile(file_name, data=data) |
705 | 8e00939c | Michael Hanselmann | |
706 | 99aabbed | Iustin Pop | names, addrs = self._GetNodeIp()
|
707 | a3811745 | Michael Hanselmann | result = rpc.RpcRunner.call_jobqueue_update(names, addrs, file_name, data) |
708 | e74798c1 | Michael Hanselmann | self._CheckRpcResult(result, self._nodes, |
709 | e74798c1 | Michael Hanselmann | "Updating %s" % file_name)
|
710 | 23752136 | Michael Hanselmann | |
711 | d7fd1f28 | Michael Hanselmann | def _RenameFilesUnlocked(self, rename): |
712 | ea03467c | Iustin Pop | """Renames a file locally and then replicate the change.
|
713 | ea03467c | Iustin Pop |
|
714 | ea03467c | Iustin Pop | This function will rename a file in the local queue directory
|
715 | ea03467c | Iustin Pop | and then replicate this rename to all the other nodes we have.
|
716 | ea03467c | Iustin Pop |
|
717 | d7fd1f28 | Michael Hanselmann | @type rename: list of (old, new)
|
718 | d7fd1f28 | Michael Hanselmann | @param rename: List containing tuples mapping old to new names
|
719 | ea03467c | Iustin Pop |
|
720 | ea03467c | Iustin Pop | """
|
721 | dd875d32 | Michael Hanselmann | # Rename them locally
|
722 | d7fd1f28 | Michael Hanselmann | for old, new in rename: |
723 | d7fd1f28 | Michael Hanselmann | utils.RenameFile(old, new, mkdir=True)
|
724 | abc1f2ce | Michael Hanselmann | |
725 | dd875d32 | Michael Hanselmann | # ... and on all nodes
|
726 | dd875d32 | Michael Hanselmann | names, addrs = self._GetNodeIp()
|
727 | dd875d32 | Michael Hanselmann | result = rpc.RpcRunner.call_jobqueue_rename(names, addrs, rename) |
728 | dd875d32 | Michael Hanselmann | self._CheckRpcResult(result, self._nodes, "Renaming files (%r)" % rename) |
729 | abc1f2ce | Michael Hanselmann | |
730 | 85f03e0d | Michael Hanselmann | def _FormatJobID(self, job_id): |
731 | ea03467c | Iustin Pop | """Convert a job ID to string format.
|
732 | ea03467c | Iustin Pop |
|
733 | ea03467c | Iustin Pop | Currently this just does C{str(job_id)} after performing some
|
734 | ea03467c | Iustin Pop | checks, but if we want to change the job id format this will
|
735 | ea03467c | Iustin Pop | abstract this change.
|
736 | ea03467c | Iustin Pop |
|
737 | ea03467c | Iustin Pop | @type job_id: int or long
|
738 | ea03467c | Iustin Pop | @param job_id: the numeric job id
|
739 | ea03467c | Iustin Pop | @rtype: str
|
740 | ea03467c | Iustin Pop | @return: the formatted job id
|
741 | ea03467c | Iustin Pop |
|
742 | ea03467c | Iustin Pop | """
|
743 | 85f03e0d | Michael Hanselmann | if not isinstance(job_id, (int, long)): |
744 | 85f03e0d | Michael Hanselmann | raise errors.ProgrammerError("Job ID '%s' not numeric" % job_id) |
745 | 85f03e0d | Michael Hanselmann | if job_id < 0: |
746 | 85f03e0d | Michael Hanselmann | raise errors.ProgrammerError("Job ID %s is negative" % job_id) |
747 | 85f03e0d | Michael Hanselmann | |
748 | 85f03e0d | Michael Hanselmann | return str(job_id) |
749 | 85f03e0d | Michael Hanselmann | |
750 | 58b22b6e | Michael Hanselmann | @classmethod
|
751 | 58b22b6e | Michael Hanselmann | def _GetArchiveDirectory(cls, job_id): |
752 | 58b22b6e | Michael Hanselmann | """Returns the archive directory for a job.
|
753 | 58b22b6e | Michael Hanselmann |
|
754 | 58b22b6e | Michael Hanselmann | @type job_id: str
|
755 | 58b22b6e | Michael Hanselmann | @param job_id: Job identifier
|
756 | 58b22b6e | Michael Hanselmann | @rtype: str
|
757 | 58b22b6e | Michael Hanselmann | @return: Directory name
|
758 | 58b22b6e | Michael Hanselmann |
|
759 | 58b22b6e | Michael Hanselmann | """
|
760 | 58b22b6e | Michael Hanselmann | return str(int(job_id) / JOBS_PER_ARCHIVE_DIRECTORY) |
761 | 58b22b6e | Michael Hanselmann | |
762 | 4c848b18 | Michael Hanselmann | def _NewSerialUnlocked(self): |
763 | f1da30e6 | Michael Hanselmann | """Generates a new job identifier.
|
764 | f1da30e6 | Michael Hanselmann |
|
765 | f1da30e6 | Michael Hanselmann | Job identifiers are unique during the lifetime of a cluster.
|
766 | f1da30e6 | Michael Hanselmann |
|
767 | ea03467c | Iustin Pop | @rtype: str
|
768 | ea03467c | Iustin Pop | @return: a string representing the job identifier.
|
769 | f1da30e6 | Michael Hanselmann |
|
770 | f1da30e6 | Michael Hanselmann | """
|
771 | f1da30e6 | Michael Hanselmann | # New number
|
772 | f1da30e6 | Michael Hanselmann | serial = self._last_serial + 1 |
773 | f1da30e6 | Michael Hanselmann | |
774 | f1da30e6 | Michael Hanselmann | # Write to file
|
775 | 23752136 | Michael Hanselmann | self._WriteAndReplicateFileUnlocked(constants.JOB_QUEUE_SERIAL_FILE,
|
776 | 23752136 | Michael Hanselmann | "%s\n" % serial)
|
777 | f1da30e6 | Michael Hanselmann | |
778 | f1da30e6 | Michael Hanselmann | # Keep it only if we were able to write the file
|
779 | f1da30e6 | Michael Hanselmann | self._last_serial = serial
|
780 | f1da30e6 | Michael Hanselmann | |
781 | 85f03e0d | Michael Hanselmann | return self._FormatJobID(serial) |
782 | f1da30e6 | Michael Hanselmann | |
783 | 85f03e0d | Michael Hanselmann | @staticmethod
|
784 | 85f03e0d | Michael Hanselmann | def _GetJobPath(job_id): |
785 | ea03467c | Iustin Pop | """Returns the job file for a given job id.
|
786 | ea03467c | Iustin Pop |
|
787 | ea03467c | Iustin Pop | @type job_id: str
|
788 | ea03467c | Iustin Pop | @param job_id: the job identifier
|
789 | ea03467c | Iustin Pop | @rtype: str
|
790 | ea03467c | Iustin Pop | @return: the path to the job file
|
791 | ea03467c | Iustin Pop |
|
792 | ea03467c | Iustin Pop | """
|
793 | f1da30e6 | Michael Hanselmann | return os.path.join(constants.QUEUE_DIR, "job-%s" % job_id) |
794 | f1da30e6 | Michael Hanselmann | |
795 | 58b22b6e | Michael Hanselmann | @classmethod
|
796 | 58b22b6e | Michael Hanselmann | def _GetArchivedJobPath(cls, job_id): |
797 | ea03467c | Iustin Pop | """Returns the archived job file for a give job id.
|
798 | ea03467c | Iustin Pop |
|
799 | ea03467c | Iustin Pop | @type job_id: str
|
800 | ea03467c | Iustin Pop | @param job_id: the job identifier
|
801 | ea03467c | Iustin Pop | @rtype: str
|
802 | ea03467c | Iustin Pop | @return: the path to the archived job file
|
803 | ea03467c | Iustin Pop |
|
804 | ea03467c | Iustin Pop | """
|
805 | 58b22b6e | Michael Hanselmann | path = "%s/job-%s" % (cls._GetArchiveDirectory(job_id), job_id)
|
806 | 58b22b6e | Michael Hanselmann | return os.path.join(constants.JOB_QUEUE_ARCHIVE_DIR, path)
|
807 | 0cb94105 | Michael Hanselmann | |
808 | 85f03e0d | Michael Hanselmann | @classmethod
|
809 | 85f03e0d | Michael Hanselmann | def _ExtractJobID(cls, name): |
810 | ea03467c | Iustin Pop | """Extract the job id from a filename.
|
811 | ea03467c | Iustin Pop |
|
812 | ea03467c | Iustin Pop | @type name: str
|
813 | ea03467c | Iustin Pop | @param name: the job filename
|
814 | ea03467c | Iustin Pop | @rtype: job id or None
|
815 | ea03467c | Iustin Pop | @return: the job id corresponding to the given filename,
|
816 | ea03467c | Iustin Pop | or None if the filename does not represent a valid
|
817 | ea03467c | Iustin Pop | job file
|
818 | ea03467c | Iustin Pop |
|
819 | ea03467c | Iustin Pop | """
|
820 | 85f03e0d | Michael Hanselmann | m = cls._RE_JOB_FILE.match(name) |
821 | fae737ac | Michael Hanselmann | if m:
|
822 | fae737ac | Michael Hanselmann | return m.group(1) |
823 | fae737ac | Michael Hanselmann | else:
|
824 | fae737ac | Michael Hanselmann | return None |
825 | fae737ac | Michael Hanselmann | |
826 | 911a495b | Iustin Pop | def _GetJobIDsUnlocked(self, archived=False): |
827 | 911a495b | Iustin Pop | """Return all known job IDs.
|
828 | 911a495b | Iustin Pop |
|
829 | 911a495b | Iustin Pop | If the parameter archived is True, archived jobs IDs will be
|
830 | 911a495b | Iustin Pop | included. Currently this argument is unused.
|
831 | 911a495b | Iustin Pop |
|
832 | ac0930b9 | Iustin Pop | The method only looks at disk because it's a requirement that all
|
833 | ac0930b9 | Iustin Pop | jobs are present on disk (so in the _memcache we don't have any
|
834 | ac0930b9 | Iustin Pop | extra IDs).
|
835 | ac0930b9 | Iustin Pop |
|
836 | ea03467c | Iustin Pop | @rtype: list
|
837 | ea03467c | Iustin Pop | @return: the list of job IDs
|
838 | ea03467c | Iustin Pop |
|
839 | 911a495b | Iustin Pop | """
|
840 | fae737ac | Michael Hanselmann | jlist = [self._ExtractJobID(name) for name in self._ListJobFiles()] |
841 | 3b87986e | Iustin Pop | jlist = utils.NiceSort(jlist) |
842 | f0d874fe | Iustin Pop | return jlist
|
843 | 911a495b | Iustin Pop | |
844 | f1da30e6 | Michael Hanselmann | def _ListJobFiles(self): |
845 | ea03467c | Iustin Pop | """Returns the list of current job files.
|
846 | ea03467c | Iustin Pop |
|
847 | ea03467c | Iustin Pop | @rtype: list
|
848 | ea03467c | Iustin Pop | @return: the list of job file names
|
849 | ea03467c | Iustin Pop |
|
850 | ea03467c | Iustin Pop | """
|
851 | f1da30e6 | Michael Hanselmann | return [name for name in utils.ListVisibleFiles(constants.QUEUE_DIR) |
852 | f1da30e6 | Michael Hanselmann | if self._RE_JOB_FILE.match(name)] |
853 | f1da30e6 | Michael Hanselmann | |
854 | 911a495b | Iustin Pop | def _LoadJobUnlocked(self, job_id): |
855 | ea03467c | Iustin Pop | """Loads a job from the disk or memory.
|
856 | ea03467c | Iustin Pop |
|
857 | ea03467c | Iustin Pop | Given a job id, this will return the cached job object if
|
858 | ea03467c | Iustin Pop | existing, or try to load the job from the disk. If loading from
|
859 | ea03467c | Iustin Pop | disk, it will also add the job to the cache.
|
860 | ea03467c | Iustin Pop |
|
861 | ea03467c | Iustin Pop | @param job_id: the job id
|
862 | ea03467c | Iustin Pop | @rtype: L{_QueuedJob} or None
|
863 | ea03467c | Iustin Pop | @return: either None or the job object
|
864 | ea03467c | Iustin Pop |
|
865 | ea03467c | Iustin Pop | """
|
866 | 5685c1a5 | Michael Hanselmann | job = self._memcache.get(job_id, None) |
867 | 5685c1a5 | Michael Hanselmann | if job:
|
868 | 205d71fd | Michael Hanselmann | logging.debug("Found job %s in memcache", job_id)
|
869 | 5685c1a5 | Michael Hanselmann | return job
|
870 | ac0930b9 | Iustin Pop | |
871 | 911a495b | Iustin Pop | filepath = self._GetJobPath(job_id)
|
872 | f1da30e6 | Michael Hanselmann | logging.debug("Loading job from %s", filepath)
|
873 | f1da30e6 | Michael Hanselmann | try:
|
874 | f1da30e6 | Michael Hanselmann | fd = open(filepath, "r") |
875 | f1da30e6 | Michael Hanselmann | except IOError, err: |
876 | f1da30e6 | Michael Hanselmann | if err.errno in (errno.ENOENT, ): |
877 | f1da30e6 | Michael Hanselmann | return None |
878 | f1da30e6 | Michael Hanselmann | raise
|
879 | f1da30e6 | Michael Hanselmann | try:
|
880 | f1da30e6 | Michael Hanselmann | data = serializer.LoadJson(fd.read()) |
881 | f1da30e6 | Michael Hanselmann | finally:
|
882 | f1da30e6 | Michael Hanselmann | fd.close() |
883 | f1da30e6 | Michael Hanselmann | |
884 | 94ed59a5 | Iustin Pop | try:
|
885 | 94ed59a5 | Iustin Pop | job = _QueuedJob.Restore(self, data)
|
886 | 94ed59a5 | Iustin Pop | except Exception, err: |
887 | 94ed59a5 | Iustin Pop | new_path = self._GetArchivedJobPath(job_id)
|
888 | 94ed59a5 | Iustin Pop | if filepath == new_path:
|
889 | 94ed59a5 | Iustin Pop | # job already archived (future case)
|
890 | 94ed59a5 | Iustin Pop | logging.exception("Can't parse job %s", job_id)
|
891 | 94ed59a5 | Iustin Pop | else:
|
892 | 94ed59a5 | Iustin Pop | # non-archived case
|
893 | 94ed59a5 | Iustin Pop | logging.exception("Can't parse job %s, will archive.", job_id)
|
894 | d7fd1f28 | Michael Hanselmann | self._RenameFilesUnlocked([(filepath, new_path)])
|
895 | 94ed59a5 | Iustin Pop | return None |
896 | 94ed59a5 | Iustin Pop | |
897 | ac0930b9 | Iustin Pop | self._memcache[job_id] = job
|
898 | 205d71fd | Michael Hanselmann | logging.debug("Added job %s to the cache", job_id)
|
899 | ac0930b9 | Iustin Pop | return job
|
900 | f1da30e6 | Michael Hanselmann | |
901 | f1da30e6 | Michael Hanselmann | def _GetJobsUnlocked(self, job_ids): |
902 | ea03467c | Iustin Pop | """Return a list of jobs based on their IDs.
|
903 | ea03467c | Iustin Pop |
|
904 | ea03467c | Iustin Pop | @type job_ids: list
|
905 | ea03467c | Iustin Pop | @param job_ids: either an empty list (meaning all jobs),
|
906 | ea03467c | Iustin Pop | or a list of job IDs
|
907 | ea03467c | Iustin Pop | @rtype: list
|
908 | ea03467c | Iustin Pop | @return: the list of job objects
|
909 | ea03467c | Iustin Pop |
|
910 | ea03467c | Iustin Pop | """
|
911 | 911a495b | Iustin Pop | if not job_ids: |
912 | 911a495b | Iustin Pop | job_ids = self._GetJobIDsUnlocked()
|
913 | f1da30e6 | Michael Hanselmann | |
914 | 911a495b | Iustin Pop | return [self._LoadJobUnlocked(job_id) for job_id in job_ids] |
915 | f1da30e6 | Michael Hanselmann | |
916 | 686d7433 | Iustin Pop | @staticmethod
|
917 | 686d7433 | Iustin Pop | def _IsQueueMarkedDrain(): |
918 | 686d7433 | Iustin Pop | """Check if the queue is marked from drain.
|
919 | 686d7433 | Iustin Pop |
|
920 | 686d7433 | Iustin Pop | This currently uses the queue drain file, which makes it a
|
921 | 686d7433 | Iustin Pop | per-node flag. In the future this can be moved to the config file.
|
922 | 686d7433 | Iustin Pop |
|
923 | ea03467c | Iustin Pop | @rtype: boolean
|
924 | ea03467c | Iustin Pop | @return: True of the job queue is marked for draining
|
925 | ea03467c | Iustin Pop |
|
926 | 686d7433 | Iustin Pop | """
|
927 | 686d7433 | Iustin Pop | return os.path.exists(constants.JOB_QUEUE_DRAIN_FILE)
|
928 | 686d7433 | Iustin Pop | |
929 | 3ccafd0e | Iustin Pop | @staticmethod
|
930 | 3ccafd0e | Iustin Pop | def SetDrainFlag(drain_flag): |
931 | 3ccafd0e | Iustin Pop | """Sets the drain flag for the queue.
|
932 | 3ccafd0e | Iustin Pop |
|
933 | 3ccafd0e | Iustin Pop | This is similar to the function L{backend.JobQueueSetDrainFlag},
|
934 | 3ccafd0e | Iustin Pop | and in the future we might merge them.
|
935 | 3ccafd0e | Iustin Pop |
|
936 | ea03467c | Iustin Pop | @type drain_flag: boolean
|
937 | 5bbd3f7f | Michael Hanselmann | @param drain_flag: Whether to set or unset the drain flag
|
938 | ea03467c | Iustin Pop |
|
939 | 3ccafd0e | Iustin Pop | """
|
940 | 3ccafd0e | Iustin Pop | if drain_flag:
|
941 | 3ccafd0e | Iustin Pop | utils.WriteFile(constants.JOB_QUEUE_DRAIN_FILE, data="", close=True) |
942 | 3ccafd0e | Iustin Pop | else:
|
943 | 3ccafd0e | Iustin Pop | utils.RemoveFile(constants.JOB_QUEUE_DRAIN_FILE) |
944 | 3ccafd0e | Iustin Pop | return True |
945 | 3ccafd0e | Iustin Pop | |
946 | f1da30e6 | Michael Hanselmann | @utils.LockedMethod
|
947 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
948 | 4c848b18 | Michael Hanselmann | def SubmitJob(self, ops): |
949 | 85f03e0d | Michael Hanselmann | """Create and store a new job.
|
950 | f1da30e6 | Michael Hanselmann |
|
951 | 85f03e0d | Michael Hanselmann | This enters the job into our job queue and also puts it on the new
|
952 | 85f03e0d | Michael Hanselmann | queue, in order for it to be picked up by the queue processors.
|
953 | c3f0a12f | Iustin Pop |
|
954 | c3f0a12f | Iustin Pop | @type ops: list
|
955 | 205d71fd | Michael Hanselmann | @param ops: The list of OpCodes that will become the new job.
|
956 | ea03467c | Iustin Pop | @rtype: job ID
|
957 | ea03467c | Iustin Pop | @return: the job ID of the newly created job
|
958 | ea03467c | Iustin Pop | @raise errors.JobQueueDrainError: if the job is marked for draining
|
959 | c3f0a12f | Iustin Pop |
|
960 | c3f0a12f | Iustin Pop | """
|
961 | 686d7433 | Iustin Pop | if self._IsQueueMarkedDrain(): |
962 | 686d7433 | Iustin Pop | raise errors.JobQueueDrainError()
|
963 | f87b405e | Michael Hanselmann | |
964 | f87b405e | Michael Hanselmann | # Check job queue size
|
965 | f87b405e | Michael Hanselmann | size = len(self._ListJobFiles()) |
966 | f87b405e | Michael Hanselmann | if size >= constants.JOB_QUEUE_SIZE_SOFT_LIMIT:
|
967 | f87b405e | Michael Hanselmann | # TODO: Autoarchive jobs. Make sure it's not done on every job
|
968 | f87b405e | Michael Hanselmann | # submission, though.
|
969 | f87b405e | Michael Hanselmann | #size = ...
|
970 | f87b405e | Michael Hanselmann | pass
|
971 | f87b405e | Michael Hanselmann | |
972 | f87b405e | Michael Hanselmann | if size >= constants.JOB_QUEUE_SIZE_HARD_LIMIT:
|
973 | f87b405e | Michael Hanselmann | raise errors.JobQueueFull()
|
974 | f87b405e | Michael Hanselmann | |
975 | f1da30e6 | Michael Hanselmann | # Get job identifier
|
976 | 4c848b18 | Michael Hanselmann | job_id = self._NewSerialUnlocked()
|
977 | f1da30e6 | Michael Hanselmann | job = _QueuedJob(self, job_id, ops)
|
978 | f1da30e6 | Michael Hanselmann | |
979 | f1da30e6 | Michael Hanselmann | # Write to disk
|
980 | 85f03e0d | Michael Hanselmann | self.UpdateJobUnlocked(job)
|
981 | f1da30e6 | Michael Hanselmann | |
982 | 5685c1a5 | Michael Hanselmann | logging.debug("Adding new job %s to the cache", job_id)
|
983 | ac0930b9 | Iustin Pop | self._memcache[job_id] = job
|
984 | ac0930b9 | Iustin Pop | |
985 | 85f03e0d | Michael Hanselmann | # Add to worker pool
|
986 | 85f03e0d | Michael Hanselmann | self._wpool.AddTask(job)
|
987 | 85f03e0d | Michael Hanselmann | |
988 | 85f03e0d | Michael Hanselmann | return job.id
|
989 | f1da30e6 | Michael Hanselmann | |
990 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
991 | 85f03e0d | Michael Hanselmann | def UpdateJobUnlocked(self, job): |
992 | ea03467c | Iustin Pop | """Update a job's on disk storage.
|
993 | ea03467c | Iustin Pop |
|
994 | ea03467c | Iustin Pop | After a job has been modified, this function needs to be called in
|
995 | ea03467c | Iustin Pop | order to write the changes to disk and replicate them to the other
|
996 | ea03467c | Iustin Pop | nodes.
|
997 | ea03467c | Iustin Pop |
|
998 | ea03467c | Iustin Pop | @type job: L{_QueuedJob}
|
999 | ea03467c | Iustin Pop | @param job: the changed job
|
1000 | ea03467c | Iustin Pop |
|
1001 | ea03467c | Iustin Pop | """
|
1002 | f1da30e6 | Michael Hanselmann | filename = self._GetJobPath(job.id)
|
1003 | 23752136 | Michael Hanselmann | data = serializer.DumpJson(job.Serialize(), indent=False)
|
1004 | f1da30e6 | Michael Hanselmann | logging.debug("Writing job %s to %s", job.id, filename)
|
1005 | 23752136 | Michael Hanselmann | self._WriteAndReplicateFileUnlocked(filename, data)
|
1006 | ac0930b9 | Iustin Pop | |
1007 | dfe57c22 | Michael Hanselmann | # Notify waiters about potential changes
|
1008 | 6c5a7090 | Michael Hanselmann | job.change.notifyAll() |
1009 | dfe57c22 | Michael Hanselmann | |
1010 | 6c5a7090 | Michael Hanselmann | @utils.LockedMethod
|
1011 | dfe57c22 | Michael Hanselmann | @_RequireOpenQueue
|
1012 | 5c735209 | Iustin Pop | def WaitForJobChanges(self, job_id, fields, prev_job_info, prev_log_serial, |
1013 | 5c735209 | Iustin Pop | timeout): |
1014 | 6c5a7090 | Michael Hanselmann | """Waits for changes in a job.
|
1015 | 6c5a7090 | Michael Hanselmann |
|
1016 | 6c5a7090 | Michael Hanselmann | @type job_id: string
|
1017 | 6c5a7090 | Michael Hanselmann | @param job_id: Job identifier
|
1018 | 6c5a7090 | Michael Hanselmann | @type fields: list of strings
|
1019 | 6c5a7090 | Michael Hanselmann | @param fields: Which fields to check for changes
|
1020 | 6c5a7090 | Michael Hanselmann | @type prev_job_info: list or None
|
1021 | 6c5a7090 | Michael Hanselmann | @param prev_job_info: Last job information returned
|
1022 | 6c5a7090 | Michael Hanselmann | @type prev_log_serial: int
|
1023 | 6c5a7090 | Michael Hanselmann | @param prev_log_serial: Last job message serial number
|
1024 | 5c735209 | Iustin Pop | @type timeout: float
|
1025 | 5c735209 | Iustin Pop | @param timeout: maximum time to wait
|
1026 | ea03467c | Iustin Pop | @rtype: tuple (job info, log entries)
|
1027 | ea03467c | Iustin Pop | @return: a tuple of the job information as required via
|
1028 | ea03467c | Iustin Pop | the fields parameter, and the log entries as a list
|
1029 | ea03467c | Iustin Pop |
|
1030 | ea03467c | Iustin Pop | if the job has not changed and the timeout has expired,
|
1031 | ea03467c | Iustin Pop | we instead return a special value,
|
1032 | ea03467c | Iustin Pop | L{constants.JOB_NOTCHANGED}, which should be interpreted
|
1033 | ea03467c | Iustin Pop | as such by the clients
|
1034 | 6c5a7090 | Michael Hanselmann |
|
1035 | 6c5a7090 | Michael Hanselmann | """
|
1036 | dfe57c22 | Michael Hanselmann | logging.debug("Waiting for changes in job %s", job_id)
|
1037 | 5c735209 | Iustin Pop | end_time = time.time() + timeout |
1038 | dfe57c22 | Michael Hanselmann | while True: |
1039 | 5c735209 | Iustin Pop | delta_time = end_time - time.time() |
1040 | 5c735209 | Iustin Pop | if delta_time < 0: |
1041 | 5c735209 | Iustin Pop | return constants.JOB_NOTCHANGED
|
1042 | 5c735209 | Iustin Pop | |
1043 | 6c5a7090 | Michael Hanselmann | job = self._LoadJobUnlocked(job_id)
|
1044 | 6c5a7090 | Michael Hanselmann | if not job: |
1045 | 6c5a7090 | Michael Hanselmann | logging.debug("Job %s not found", job_id)
|
1046 | 6c5a7090 | Michael Hanselmann | break
|
1047 | dfe57c22 | Michael Hanselmann | |
1048 | 6c5a7090 | Michael Hanselmann | status = job.CalcStatus() |
1049 | 6c5a7090 | Michael Hanselmann | job_info = self._GetJobInfoUnlocked(job, fields)
|
1050 | 6c5a7090 | Michael Hanselmann | log_entries = job.GetLogEntries(prev_log_serial) |
1051 | dfe57c22 | Michael Hanselmann | |
1052 | dfe57c22 | Michael Hanselmann | # Serializing and deserializing data can cause type changes (e.g. from
|
1053 | dfe57c22 | Michael Hanselmann | # tuple to list) or precision loss. We're doing it here so that we get
|
1054 | dfe57c22 | Michael Hanselmann | # the same modifications as the data received from the client. Without
|
1055 | dfe57c22 | Michael Hanselmann | # this, the comparison afterwards might fail without the data being
|
1056 | dfe57c22 | Michael Hanselmann | # significantly different.
|
1057 | 6c5a7090 | Michael Hanselmann | job_info = serializer.LoadJson(serializer.DumpJson(job_info)) |
1058 | 6c5a7090 | Michael Hanselmann | log_entries = serializer.LoadJson(serializer.DumpJson(log_entries)) |
1059 | dfe57c22 | Michael Hanselmann | |
1060 | 6c5a7090 | Michael Hanselmann | if status not in (constants.JOB_STATUS_QUEUED, |
1061 | e92376d7 | Iustin Pop | constants.JOB_STATUS_RUNNING, |
1062 | e92376d7 | Iustin Pop | constants.JOB_STATUS_WAITLOCK): |
1063 | 6c5a7090 | Michael Hanselmann | # Don't even try to wait if the job is no longer running, there will be
|
1064 | 6c5a7090 | Michael Hanselmann | # no changes.
|
1065 | dfe57c22 | Michael Hanselmann | break
|
1066 | dfe57c22 | Michael Hanselmann | |
1067 | 6c5a7090 | Michael Hanselmann | if (prev_job_info != job_info or |
1068 | 6c5a7090 | Michael Hanselmann | (log_entries and prev_log_serial != log_entries[0][0])): |
1069 | 6c5a7090 | Michael Hanselmann | break
|
1070 | 6c5a7090 | Michael Hanselmann | |
1071 | 6c5a7090 | Michael Hanselmann | logging.debug("Waiting again")
|
1072 | 6c5a7090 | Michael Hanselmann | |
1073 | 6c5a7090 | Michael Hanselmann | # Release the queue lock while waiting
|
1074 | 5c735209 | Iustin Pop | job.change.wait(delta_time) |
1075 | dfe57c22 | Michael Hanselmann | |
1076 | dfe57c22 | Michael Hanselmann | logging.debug("Job %s changed", job_id)
|
1077 | dfe57c22 | Michael Hanselmann | |
1078 | 6c5a7090 | Michael Hanselmann | return (job_info, log_entries)
|
1079 | dfe57c22 | Michael Hanselmann | |
1080 | f1da30e6 | Michael Hanselmann | @utils.LockedMethod
|
1081 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
1082 | 188c5e0a | Michael Hanselmann | def CancelJob(self, job_id): |
1083 | 188c5e0a | Michael Hanselmann | """Cancels a job.
|
1084 | 188c5e0a | Michael Hanselmann |
|
1085 | ea03467c | Iustin Pop | This will only succeed if the job has not started yet.
|
1086 | ea03467c | Iustin Pop |
|
1087 | 188c5e0a | Michael Hanselmann | @type job_id: string
|
1088 | ea03467c | Iustin Pop | @param job_id: job ID of job to be cancelled.
|
1089 | 188c5e0a | Michael Hanselmann |
|
1090 | 188c5e0a | Michael Hanselmann | """
|
1091 | fbf0262f | Michael Hanselmann | logging.info("Cancelling job %s", job_id)
|
1092 | 188c5e0a | Michael Hanselmann | |
1093 | 85f03e0d | Michael Hanselmann | job = self._LoadJobUnlocked(job_id)
|
1094 | 188c5e0a | Michael Hanselmann | if not job: |
1095 | 188c5e0a | Michael Hanselmann | logging.debug("Job %s not found", job_id)
|
1096 | fbf0262f | Michael Hanselmann | return (False, "Job %s not found" % job_id) |
1097 | fbf0262f | Michael Hanselmann | |
1098 | fbf0262f | Michael Hanselmann | job_status = job.CalcStatus() |
1099 | 188c5e0a | Michael Hanselmann | |
1100 | fbf0262f | Michael Hanselmann | if job_status not in (constants.JOB_STATUS_QUEUED, |
1101 | fbf0262f | Michael Hanselmann | constants.JOB_STATUS_WAITLOCK): |
1102 | 188c5e0a | Michael Hanselmann | logging.debug("Job %s is no longer in the queue", job.id)
|
1103 | fbf0262f | Michael Hanselmann | return (False, "Job %s is no longer in the queue" % job.id) |
1104 | fbf0262f | Michael Hanselmann | |
1105 | fbf0262f | Michael Hanselmann | if job_status == constants.JOB_STATUS_QUEUED:
|
1106 | fbf0262f | Michael Hanselmann | self.CancelJobUnlocked(job)
|
1107 | fbf0262f | Michael Hanselmann | return (True, "Job %s canceled" % job.id) |
1108 | 188c5e0a | Michael Hanselmann | |
1109 | fbf0262f | Michael Hanselmann | elif job_status == constants.JOB_STATUS_WAITLOCK:
|
1110 | fbf0262f | Michael Hanselmann | # The worker will notice the new status and cancel the job
|
1111 | fbf0262f | Michael Hanselmann | try:
|
1112 | fbf0262f | Michael Hanselmann | for op in job.ops: |
1113 | fbf0262f | Michael Hanselmann | op.status = constants.OP_STATUS_CANCELING |
1114 | fbf0262f | Michael Hanselmann | finally:
|
1115 | fbf0262f | Michael Hanselmann | self.UpdateJobUnlocked(job)
|
1116 | fbf0262f | Michael Hanselmann | return (True, "Job %s will be canceled" % job.id) |
1117 | fbf0262f | Michael Hanselmann | |
1118 | fbf0262f | Michael Hanselmann | @_RequireOpenQueue
|
1119 | fbf0262f | Michael Hanselmann | def CancelJobUnlocked(self, job): |
1120 | fbf0262f | Michael Hanselmann | """Marks a job as canceled.
|
1121 | fbf0262f | Michael Hanselmann |
|
1122 | fbf0262f | Michael Hanselmann | """
|
1123 | 85f03e0d | Michael Hanselmann | try:
|
1124 | 85f03e0d | Michael Hanselmann | for op in job.ops: |
1125 | df0fb067 | Iustin Pop | op.status = constants.OP_STATUS_CANCELED |
1126 | fbf0262f | Michael Hanselmann | op.result = "Job canceled by request"
|
1127 | 85f03e0d | Michael Hanselmann | finally:
|
1128 | 85f03e0d | Michael Hanselmann | self.UpdateJobUnlocked(job)
|
1129 | 188c5e0a | Michael Hanselmann | |
1130 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
1131 | d7fd1f28 | Michael Hanselmann | def _ArchiveJobsUnlocked(self, jobs): |
1132 | d7fd1f28 | Michael Hanselmann | """Archives jobs.
|
1133 | c609f802 | Michael Hanselmann |
|
1134 | d7fd1f28 | Michael Hanselmann | @type jobs: list of L{_QueuedJob}
|
1135 | 25e7b43f | Iustin Pop | @param jobs: Job objects
|
1136 | d7fd1f28 | Michael Hanselmann | @rtype: int
|
1137 | d7fd1f28 | Michael Hanselmann | @return: Number of archived jobs
|
1138 | c609f802 | Michael Hanselmann |
|
1139 | c609f802 | Michael Hanselmann | """
|
1140 | d7fd1f28 | Michael Hanselmann | archive_jobs = [] |
1141 | d7fd1f28 | Michael Hanselmann | rename_files = [] |
1142 | d7fd1f28 | Michael Hanselmann | for job in jobs: |
1143 | d7fd1f28 | Michael Hanselmann | if job.CalcStatus() not in (constants.JOB_STATUS_CANCELED, |
1144 | d7fd1f28 | Michael Hanselmann | constants.JOB_STATUS_SUCCESS, |
1145 | d7fd1f28 | Michael Hanselmann | constants.JOB_STATUS_ERROR): |
1146 | d7fd1f28 | Michael Hanselmann | logging.debug("Job %s is not yet done", job.id)
|
1147 | d7fd1f28 | Michael Hanselmann | continue
|
1148 | c609f802 | Michael Hanselmann | |
1149 | d7fd1f28 | Michael Hanselmann | archive_jobs.append(job) |
1150 | c609f802 | Michael Hanselmann | |
1151 | d7fd1f28 | Michael Hanselmann | old = self._GetJobPath(job.id)
|
1152 | d7fd1f28 | Michael Hanselmann | new = self._GetArchivedJobPath(job.id)
|
1153 | d7fd1f28 | Michael Hanselmann | rename_files.append((old, new)) |
1154 | c609f802 | Michael Hanselmann | |
1155 | d7fd1f28 | Michael Hanselmann | # TODO: What if 1..n files fail to rename?
|
1156 | d7fd1f28 | Michael Hanselmann | self._RenameFilesUnlocked(rename_files)
|
1157 | f1da30e6 | Michael Hanselmann | |
1158 | d7fd1f28 | Michael Hanselmann | logging.debug("Successfully archived job(s) %s",
|
1159 | d7fd1f28 | Michael Hanselmann | ", ".join(job.id for job in archive_jobs)) |
1160 | d7fd1f28 | Michael Hanselmann | |
1161 | d7fd1f28 | Michael Hanselmann | return len(archive_jobs) |
1162 | 78d12585 | Michael Hanselmann | |
1163 | 07cd723a | Iustin Pop | @utils.LockedMethod
|
1164 | 07cd723a | Iustin Pop | @_RequireOpenQueue
|
1165 | 07cd723a | Iustin Pop | def ArchiveJob(self, job_id): |
1166 | 07cd723a | Iustin Pop | """Archives a job.
|
1167 | 07cd723a | Iustin Pop |
|
1168 | 25e7b43f | Iustin Pop | This is just a wrapper over L{_ArchiveJobsUnlocked}.
|
1169 | ea03467c | Iustin Pop |
|
1170 | 07cd723a | Iustin Pop | @type job_id: string
|
1171 | 07cd723a | Iustin Pop | @param job_id: Job ID of job to be archived.
|
1172 | 78d12585 | Michael Hanselmann | @rtype: bool
|
1173 | 78d12585 | Michael Hanselmann | @return: Whether job was archived
|
1174 | 07cd723a | Iustin Pop |
|
1175 | 07cd723a | Iustin Pop | """
|
1176 | 78d12585 | Michael Hanselmann | logging.info("Archiving job %s", job_id)
|
1177 | 78d12585 | Michael Hanselmann | |
1178 | 78d12585 | Michael Hanselmann | job = self._LoadJobUnlocked(job_id)
|
1179 | 78d12585 | Michael Hanselmann | if not job: |
1180 | 78d12585 | Michael Hanselmann | logging.debug("Job %s not found", job_id)
|
1181 | 78d12585 | Michael Hanselmann | return False |
1182 | 78d12585 | Michael Hanselmann | |
1183 | 5278185a | Iustin Pop | return self._ArchiveJobsUnlocked([job]) == 1 |
1184 | 07cd723a | Iustin Pop | |
1185 | 07cd723a | Iustin Pop | @utils.LockedMethod
|
1186 | 07cd723a | Iustin Pop | @_RequireOpenQueue
|
1187 | f8ad5591 | Michael Hanselmann | def AutoArchiveJobs(self, age, timeout): |
1188 | 07cd723a | Iustin Pop | """Archives all jobs based on age.
|
1189 | 07cd723a | Iustin Pop |
|
1190 | 07cd723a | Iustin Pop | The method will archive all jobs which are older than the age
|
1191 | 07cd723a | Iustin Pop | parameter. For jobs that don't have an end timestamp, the start
|
1192 | 07cd723a | Iustin Pop | timestamp will be considered. The special '-1' age will cause
|
1193 | 07cd723a | Iustin Pop | archival of all jobs (that are not running or queued).
|
1194 | 07cd723a | Iustin Pop |
|
1195 | 07cd723a | Iustin Pop | @type age: int
|
1196 | 07cd723a | Iustin Pop | @param age: the minimum age in seconds
|
1197 | 07cd723a | Iustin Pop |
|
1198 | 07cd723a | Iustin Pop | """
|
1199 | 07cd723a | Iustin Pop | logging.info("Archiving jobs with age more than %s seconds", age)
|
1200 | 07cd723a | Iustin Pop | |
1201 | 07cd723a | Iustin Pop | now = time.time() |
1202 | f8ad5591 | Michael Hanselmann | end_time = now + timeout |
1203 | f8ad5591 | Michael Hanselmann | archived_count = 0
|
1204 | f8ad5591 | Michael Hanselmann | last_touched = 0
|
1205 | f8ad5591 | Michael Hanselmann | |
1206 | f8ad5591 | Michael Hanselmann | all_job_ids = self._GetJobIDsUnlocked(archived=False) |
1207 | d7fd1f28 | Michael Hanselmann | pending = [] |
1208 | f8ad5591 | Michael Hanselmann | for idx, job_id in enumerate(all_job_ids): |
1209 | f8ad5591 | Michael Hanselmann | last_touched = idx |
1210 | f8ad5591 | Michael Hanselmann | |
1211 | d7fd1f28 | Michael Hanselmann | # Not optimal because jobs could be pending
|
1212 | d7fd1f28 | Michael Hanselmann | # TODO: Measure average duration for job archival and take number of
|
1213 | d7fd1f28 | Michael Hanselmann | # pending jobs into account.
|
1214 | f8ad5591 | Michael Hanselmann | if time.time() > end_time:
|
1215 | f8ad5591 | Michael Hanselmann | break
|
1216 | f8ad5591 | Michael Hanselmann | |
1217 | 78d12585 | Michael Hanselmann | # Returns None if the job failed to load
|
1218 | 78d12585 | Michael Hanselmann | job = self._LoadJobUnlocked(job_id)
|
1219 | f8ad5591 | Michael Hanselmann | if job:
|
1220 | f8ad5591 | Michael Hanselmann | if job.end_timestamp is None: |
1221 | f8ad5591 | Michael Hanselmann | if job.start_timestamp is None: |
1222 | f8ad5591 | Michael Hanselmann | job_age = job.received_timestamp |
1223 | f8ad5591 | Michael Hanselmann | else:
|
1224 | f8ad5591 | Michael Hanselmann | job_age = job.start_timestamp |
1225 | 07cd723a | Iustin Pop | else:
|
1226 | f8ad5591 | Michael Hanselmann | job_age = job.end_timestamp |
1227 | f8ad5591 | Michael Hanselmann | |
1228 | f8ad5591 | Michael Hanselmann | if age == -1 or now - job_age[0] > age: |
1229 | d7fd1f28 | Michael Hanselmann | pending.append(job) |
1230 | d7fd1f28 | Michael Hanselmann | |
1231 | d7fd1f28 | Michael Hanselmann | # Archive 10 jobs at a time
|
1232 | d7fd1f28 | Michael Hanselmann | if len(pending) >= 10: |
1233 | d7fd1f28 | Michael Hanselmann | archived_count += self._ArchiveJobsUnlocked(pending)
|
1234 | d7fd1f28 | Michael Hanselmann | pending = [] |
1235 | f8ad5591 | Michael Hanselmann | |
1236 | d7fd1f28 | Michael Hanselmann | if pending:
|
1237 | d7fd1f28 | Michael Hanselmann | archived_count += self._ArchiveJobsUnlocked(pending)
|
1238 | 07cd723a | Iustin Pop | |
1239 | f8ad5591 | Michael Hanselmann | return (archived_count, len(all_job_ids) - last_touched - 1) |
1240 | 07cd723a | Iustin Pop | |
1241 | 85f03e0d | Michael Hanselmann | def _GetJobInfoUnlocked(self, job, fields): |
1242 | ea03467c | Iustin Pop | """Returns information about a job.
|
1243 | ea03467c | Iustin Pop |
|
1244 | ea03467c | Iustin Pop | @type job: L{_QueuedJob}
|
1245 | ea03467c | Iustin Pop | @param job: the job which we query
|
1246 | ea03467c | Iustin Pop | @type fields: list
|
1247 | ea03467c | Iustin Pop | @param fields: names of fields to return
|
1248 | ea03467c | Iustin Pop | @rtype: list
|
1249 | ea03467c | Iustin Pop | @return: list with one element for each field
|
1250 | ea03467c | Iustin Pop | @raise errors.OpExecError: when an invalid field
|
1251 | ea03467c | Iustin Pop | has been passed
|
1252 | ea03467c | Iustin Pop |
|
1253 | ea03467c | Iustin Pop | """
|
1254 | e2715f69 | Michael Hanselmann | row = [] |
1255 | e2715f69 | Michael Hanselmann | for fname in fields: |
1256 | e2715f69 | Michael Hanselmann | if fname == "id": |
1257 | e2715f69 | Michael Hanselmann | row.append(job.id) |
1258 | e2715f69 | Michael Hanselmann | elif fname == "status": |
1259 | 85f03e0d | Michael Hanselmann | row.append(job.CalcStatus()) |
1260 | af30b2fd | Michael Hanselmann | elif fname == "ops": |
1261 | 85f03e0d | Michael Hanselmann | row.append([op.input.__getstate__() for op in job.ops]) |
1262 | af30b2fd | Michael Hanselmann | elif fname == "opresult": |
1263 | 85f03e0d | Michael Hanselmann | row.append([op.result for op in job.ops]) |
1264 | af30b2fd | Michael Hanselmann | elif fname == "opstatus": |
1265 | 85f03e0d | Michael Hanselmann | row.append([op.status for op in job.ops]) |
1266 | 5b23c34c | Iustin Pop | elif fname == "oplog": |
1267 | 5b23c34c | Iustin Pop | row.append([op.log for op in job.ops]) |
1268 | c56ec146 | Iustin Pop | elif fname == "opstart": |
1269 | c56ec146 | Iustin Pop | row.append([op.start_timestamp for op in job.ops]) |
1270 | c56ec146 | Iustin Pop | elif fname == "opend": |
1271 | c56ec146 | Iustin Pop | row.append([op.end_timestamp for op in job.ops]) |
1272 | c56ec146 | Iustin Pop | elif fname == "received_ts": |
1273 | c56ec146 | Iustin Pop | row.append(job.received_timestamp) |
1274 | c56ec146 | Iustin Pop | elif fname == "start_ts": |
1275 | c56ec146 | Iustin Pop | row.append(job.start_timestamp) |
1276 | c56ec146 | Iustin Pop | elif fname == "end_ts": |
1277 | c56ec146 | Iustin Pop | row.append(job.end_timestamp) |
1278 | 60dd1473 | Iustin Pop | elif fname == "summary": |
1279 | 60dd1473 | Iustin Pop | row.append([op.input.Summary() for op in job.ops]) |
1280 | e2715f69 | Michael Hanselmann | else:
|
1281 | e2715f69 | Michael Hanselmann | raise errors.OpExecError("Invalid job query field '%s'" % fname) |
1282 | e2715f69 | Michael Hanselmann | return row
|
1283 | e2715f69 | Michael Hanselmann | |
1284 | 85f03e0d | Michael Hanselmann | @utils.LockedMethod
|
1285 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
1286 | e2715f69 | Michael Hanselmann | def QueryJobs(self, job_ids, fields): |
1287 | e2715f69 | Michael Hanselmann | """Returns a list of jobs in queue.
|
1288 | e2715f69 | Michael Hanselmann |
|
1289 | ea03467c | Iustin Pop | This is a wrapper of L{_GetJobsUnlocked}, which actually does the
|
1290 | ea03467c | Iustin Pop | processing for each job.
|
1291 | ea03467c | Iustin Pop |
|
1292 | ea03467c | Iustin Pop | @type job_ids: list
|
1293 | ea03467c | Iustin Pop | @param job_ids: sequence of job identifiers or None for all
|
1294 | ea03467c | Iustin Pop | @type fields: list
|
1295 | ea03467c | Iustin Pop | @param fields: names of fields to return
|
1296 | ea03467c | Iustin Pop | @rtype: list
|
1297 | ea03467c | Iustin Pop | @return: list one element per job, each element being list with
|
1298 | ea03467c | Iustin Pop | the requested fields
|
1299 | e2715f69 | Michael Hanselmann |
|
1300 | e2715f69 | Michael Hanselmann | """
|
1301 | 85f03e0d | Michael Hanselmann | jobs = [] |
1302 | e2715f69 | Michael Hanselmann | |
1303 | 85f03e0d | Michael Hanselmann | for job in self._GetJobsUnlocked(job_ids): |
1304 | 85f03e0d | Michael Hanselmann | if job is None: |
1305 | 85f03e0d | Michael Hanselmann | jobs.append(None)
|
1306 | 85f03e0d | Michael Hanselmann | else:
|
1307 | 85f03e0d | Michael Hanselmann | jobs.append(self._GetJobInfoUnlocked(job, fields))
|
1308 | e2715f69 | Michael Hanselmann | |
1309 | 85f03e0d | Michael Hanselmann | return jobs
|
1310 | e2715f69 | Michael Hanselmann | |
1311 | f1da30e6 | Michael Hanselmann | @utils.LockedMethod
|
1312 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
1313 | e2715f69 | Michael Hanselmann | def Shutdown(self): |
1314 | e2715f69 | Michael Hanselmann | """Stops the job queue.
|
1315 | e2715f69 | Michael Hanselmann |
|
1316 | ea03467c | Iustin Pop | This shutdowns all the worker threads an closes the queue.
|
1317 | ea03467c | Iustin Pop |
|
1318 | e2715f69 | Michael Hanselmann | """
|
1319 | e2715f69 | Michael Hanselmann | self._wpool.TerminateWorkers()
|
1320 | 85f03e0d | Michael Hanselmann | |
1321 | 04ab05ce | Michael Hanselmann | self._queue_lock.Close()
|
1322 | 04ab05ce | Michael Hanselmann | self._queue_lock = None |