root / lib / jqueue.py @ 65548ed5
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2 | 498ae1cc | Iustin Pop | #
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3 | 498ae1cc | Iustin Pop | |
4 | 498ae1cc | Iustin Pop | # Copyright (C) 2006, 2007 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 | 6c5a7090 | Michael Hanselmann | Locking:
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25 | 6c5a7090 | Michael Hanselmann | There's a single, large lock in the JobQueue class. It's used by all other
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26 | 6c5a7090 | Michael Hanselmann | classes in this module.
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27 | 6c5a7090 | Michael Hanselmann |
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28 | 6c5a7090 | Michael Hanselmann | """
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29 | 498ae1cc | Iustin Pop | |
30 | f1da30e6 | Michael Hanselmann | import os |
31 | e2715f69 | Michael Hanselmann | import logging |
32 | e2715f69 | Michael Hanselmann | import threading |
33 | f1da30e6 | Michael Hanselmann | import errno |
34 | f1da30e6 | Michael Hanselmann | import re |
35 | f1048938 | Iustin Pop | import time |
36 | 498ae1cc | Iustin Pop | |
37 | e2715f69 | Michael Hanselmann | from ganeti import constants |
38 | f1da30e6 | Michael Hanselmann | from ganeti import serializer |
39 | e2715f69 | Michael Hanselmann | from ganeti import workerpool |
40 | f1da30e6 | Michael Hanselmann | from ganeti import opcodes |
41 | 7a1ecaed | Iustin Pop | from ganeti import errors |
42 | e2715f69 | Michael Hanselmann | from ganeti import mcpu |
43 | 7996a135 | Iustin Pop | from ganeti import utils |
44 | 04ab05ce | Michael Hanselmann | from ganeti import jstore |
45 | c3f0a12f | Iustin Pop | from ganeti import rpc |
46 | e2715f69 | Michael Hanselmann | |
47 | e2715f69 | Michael Hanselmann | |
48 | e2715f69 | Michael Hanselmann | JOBQUEUE_THREADS = 5
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49 | e2715f69 | Michael Hanselmann | |
50 | 498ae1cc | Iustin Pop | |
51 | e2715f69 | Michael Hanselmann | class _QueuedOpCode(object): |
52 | e2715f69 | Michael Hanselmann | """Encasulates an opcode object.
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53 | e2715f69 | Michael Hanselmann |
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54 | f1048938 | Iustin Pop | The 'log' attribute holds the execution log and consists of tuples
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55 | 6c5a7090 | Michael Hanselmann | of the form (log_serial, timestamp, level, message).
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56 | f1048938 | Iustin Pop |
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57 | e2715f69 | Michael Hanselmann | """
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58 | 85f03e0d | Michael Hanselmann | def __init__(self, op): |
59 | 85f03e0d | Michael Hanselmann | self.input = op
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60 | 85f03e0d | Michael Hanselmann | self.status = constants.OP_STATUS_QUEUED
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61 | 85f03e0d | Michael Hanselmann | self.result = None |
62 | 85f03e0d | Michael Hanselmann | self.log = []
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63 | f1da30e6 | Michael Hanselmann | |
64 | f1da30e6 | Michael Hanselmann | @classmethod
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65 | f1da30e6 | Michael Hanselmann | def Restore(cls, state): |
66 | 85f03e0d | Michael Hanselmann | obj = _QueuedOpCode.__new__(cls) |
67 | 85f03e0d | Michael Hanselmann | obj.input = opcodes.OpCode.LoadOpCode(state["input"])
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68 | 85f03e0d | Michael Hanselmann | obj.status = state["status"]
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69 | 85f03e0d | Michael Hanselmann | obj.result = state["result"]
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70 | 85f03e0d | Michael Hanselmann | obj.log = state["log"]
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71 | f1da30e6 | Michael Hanselmann | return obj
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72 | f1da30e6 | Michael Hanselmann | |
73 | f1da30e6 | Michael Hanselmann | def Serialize(self): |
74 | 6c5a7090 | Michael Hanselmann | return {
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75 | 6c5a7090 | Michael Hanselmann | "input": self.input.__getstate__(), |
76 | 6c5a7090 | Michael Hanselmann | "status": self.status, |
77 | 6c5a7090 | Michael Hanselmann | "result": self.result, |
78 | 6c5a7090 | Michael Hanselmann | "log": self.log, |
79 | 6c5a7090 | Michael Hanselmann | } |
80 | f1048938 | Iustin Pop | |
81 | e2715f69 | Michael Hanselmann | |
82 | e2715f69 | Michael Hanselmann | class _QueuedJob(object): |
83 | e2715f69 | Michael Hanselmann | """In-memory job representation.
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84 | e2715f69 | Michael Hanselmann |
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85 | 6c5a7090 | Michael Hanselmann | This is what we use to track the user-submitted jobs. Locking must be taken
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86 | 6c5a7090 | Michael Hanselmann | care of by users of this class.
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87 | e2715f69 | Michael Hanselmann |
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88 | e2715f69 | Michael Hanselmann | """
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89 | 85f03e0d | Michael Hanselmann | def __init__(self, queue, job_id, ops): |
90 | e2715f69 | Michael Hanselmann | if not ops: |
91 | e2715f69 | Michael Hanselmann | # TODO
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92 | e2715f69 | Michael Hanselmann | raise Exception("No opcodes") |
93 | e2715f69 | Michael Hanselmann | |
94 | 85f03e0d | Michael Hanselmann | self.queue = queue
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95 | f1da30e6 | Michael Hanselmann | self.id = job_id
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96 | 85f03e0d | Michael Hanselmann | self.ops = [_QueuedOpCode(op) for op in ops] |
97 | 85f03e0d | Michael Hanselmann | self.run_op_index = -1 |
98 | 6c5a7090 | Michael Hanselmann | self.log_serial = 0 |
99 | 6c5a7090 | Michael Hanselmann | |
100 | 6c5a7090 | Michael Hanselmann | # Condition to wait for changes
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101 | 6c5a7090 | Michael Hanselmann | self.change = threading.Condition(self.queue._lock) |
102 | f1da30e6 | Michael Hanselmann | |
103 | f1da30e6 | Michael Hanselmann | @classmethod
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104 | 85f03e0d | Michael Hanselmann | def Restore(cls, queue, state): |
105 | 85f03e0d | Michael Hanselmann | obj = _QueuedJob.__new__(cls) |
106 | 85f03e0d | Michael Hanselmann | obj.queue = queue |
107 | 85f03e0d | Michael Hanselmann | obj.id = state["id"]
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108 | 85f03e0d | Michael Hanselmann | obj.run_op_index = state["run_op_index"]
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109 | 6c5a7090 | Michael Hanselmann | |
110 | 6c5a7090 | Michael Hanselmann | obj.ops = [] |
111 | 6c5a7090 | Michael Hanselmann | obj.log_serial = 0
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112 | 6c5a7090 | Michael Hanselmann | for op_state in state["ops"]: |
113 | 6c5a7090 | Michael Hanselmann | op = _QueuedOpCode.Restore(op_state) |
114 | 6c5a7090 | Michael Hanselmann | for log_entry in op.log: |
115 | 6c5a7090 | Michael Hanselmann | obj.log_serial = max(obj.log_serial, log_entry[0]) |
116 | 6c5a7090 | Michael Hanselmann | obj.ops.append(op) |
117 | 6c5a7090 | Michael Hanselmann | |
118 | 6c5a7090 | Michael Hanselmann | # Condition to wait for changes
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119 | 6c5a7090 | Michael Hanselmann | obj.change = threading.Condition(obj.queue._lock) |
120 | 6c5a7090 | Michael Hanselmann | |
121 | f1da30e6 | Michael Hanselmann | return obj
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122 | f1da30e6 | Michael Hanselmann | |
123 | f1da30e6 | Michael Hanselmann | def Serialize(self): |
124 | f1da30e6 | Michael Hanselmann | return {
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125 | f1da30e6 | Michael Hanselmann | "id": self.id, |
126 | 85f03e0d | Michael Hanselmann | "ops": [op.Serialize() for op in self.ops], |
127 | f1048938 | Iustin Pop | "run_op_index": self.run_op_index, |
128 | f1da30e6 | Michael Hanselmann | } |
129 | f1da30e6 | Michael Hanselmann | |
130 | 85f03e0d | Michael Hanselmann | def CalcStatus(self): |
131 | e2715f69 | Michael Hanselmann | status = constants.JOB_STATUS_QUEUED |
132 | e2715f69 | Michael Hanselmann | |
133 | e2715f69 | Michael Hanselmann | all_success = True
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134 | 85f03e0d | Michael Hanselmann | for op in self.ops: |
135 | 85f03e0d | Michael Hanselmann | if op.status == constants.OP_STATUS_SUCCESS:
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136 | e2715f69 | Michael Hanselmann | continue
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137 | e2715f69 | Michael Hanselmann | |
138 | e2715f69 | Michael Hanselmann | all_success = False
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139 | e2715f69 | Michael Hanselmann | |
140 | 85f03e0d | Michael Hanselmann | if op.status == constants.OP_STATUS_QUEUED:
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141 | e2715f69 | Michael Hanselmann | pass
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142 | 85f03e0d | Michael Hanselmann | elif op.status == constants.OP_STATUS_RUNNING:
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143 | e2715f69 | Michael Hanselmann | status = constants.JOB_STATUS_RUNNING |
144 | 85f03e0d | Michael Hanselmann | elif op.status == constants.OP_STATUS_ERROR:
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145 | f1da30e6 | Michael Hanselmann | status = constants.JOB_STATUS_ERROR |
146 | f1da30e6 | Michael Hanselmann | # The whole job fails if one opcode failed
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147 | f1da30e6 | Michael Hanselmann | break
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148 | 85f03e0d | Michael Hanselmann | elif op.status == constants.OP_STATUS_CANCELED:
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149 | 4cb1d919 | Michael Hanselmann | status = constants.OP_STATUS_CANCELED |
150 | 4cb1d919 | Michael Hanselmann | break
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151 | e2715f69 | Michael Hanselmann | |
152 | e2715f69 | Michael Hanselmann | if all_success:
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153 | e2715f69 | Michael Hanselmann | status = constants.JOB_STATUS_SUCCESS |
154 | e2715f69 | Michael Hanselmann | |
155 | e2715f69 | Michael Hanselmann | return status
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156 | e2715f69 | Michael Hanselmann | |
157 | 6c5a7090 | Michael Hanselmann | def GetLogEntries(self, newer_than): |
158 | 6c5a7090 | Michael Hanselmann | if newer_than is None: |
159 | 6c5a7090 | Michael Hanselmann | serial = -1
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160 | 6c5a7090 | Michael Hanselmann | else:
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161 | 6c5a7090 | Michael Hanselmann | serial = newer_than |
162 | 6c5a7090 | Michael Hanselmann | |
163 | 6c5a7090 | Michael Hanselmann | entries = [] |
164 | 6c5a7090 | Michael Hanselmann | for op in self.ops: |
165 | 6c5a7090 | Michael Hanselmann | entries.extend(filter(lambda entry: entry[0] > newer_than, op.log)) |
166 | 6c5a7090 | Michael Hanselmann | |
167 | 6c5a7090 | Michael Hanselmann | return entries
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168 | 6c5a7090 | Michael Hanselmann | |
169 | f1048938 | Iustin Pop | |
170 | 85f03e0d | Michael Hanselmann | class _JobQueueWorker(workerpool.BaseWorker): |
171 | 85f03e0d | Michael Hanselmann | def RunTask(self, job): |
172 | e2715f69 | Michael Hanselmann | """Job executor.
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173 | e2715f69 | Michael Hanselmann |
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174 | 6c5a7090 | Michael Hanselmann | This functions processes a job. It is closely tied to the _QueuedJob and
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175 | 6c5a7090 | Michael Hanselmann | _QueuedOpCode classes.
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176 | e2715f69 | Michael Hanselmann |
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177 | e2715f69 | Michael Hanselmann | """
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178 | e2715f69 | Michael Hanselmann | logging.debug("Worker %s processing job %s",
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179 | e2715f69 | Michael Hanselmann | self.worker_id, job.id)
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180 | 5bdce580 | Michael Hanselmann | proc = mcpu.Processor(self.pool.queue.context)
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181 | 85f03e0d | Michael Hanselmann | queue = job.queue |
182 | e2715f69 | Michael Hanselmann | try:
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183 | 85f03e0d | Michael Hanselmann | try:
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184 | 85f03e0d | Michael Hanselmann | count = len(job.ops)
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185 | 85f03e0d | Michael Hanselmann | for idx, op in enumerate(job.ops): |
186 | 85f03e0d | Michael Hanselmann | try:
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187 | 85f03e0d | Michael Hanselmann | logging.debug("Op %s/%s: Starting %s", idx + 1, count, op) |
188 | 85f03e0d | Michael Hanselmann | |
189 | 85f03e0d | Michael Hanselmann | queue.acquire() |
190 | 85f03e0d | Michael Hanselmann | try:
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191 | 85f03e0d | Michael Hanselmann | job.run_op_index = idx |
192 | 85f03e0d | Michael Hanselmann | op.status = constants.OP_STATUS_RUNNING |
193 | 85f03e0d | Michael Hanselmann | op.result = None
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194 | 85f03e0d | Michael Hanselmann | queue.UpdateJobUnlocked(job) |
195 | 85f03e0d | Michael Hanselmann | |
196 | 38206f3c | Iustin Pop | input_opcode = op.input |
197 | 85f03e0d | Michael Hanselmann | finally:
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198 | 85f03e0d | Michael Hanselmann | queue.release() |
199 | 85f03e0d | Michael Hanselmann | |
200 | dfe57c22 | Michael Hanselmann | def _Log(*args): |
201 | 6c5a7090 | Michael Hanselmann | """Append a log entry.
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202 | 6c5a7090 | Michael Hanselmann |
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203 | 6c5a7090 | Michael Hanselmann | """
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204 | 6c5a7090 | Michael Hanselmann | assert len(args) < 3 |
205 | 6c5a7090 | Michael Hanselmann | |
206 | 6c5a7090 | Michael Hanselmann | if len(args) == 1: |
207 | 6c5a7090 | Michael Hanselmann | log_type = constants.ELOG_MESSAGE |
208 | 6c5a7090 | Michael Hanselmann | log_msg = args[0]
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209 | 6c5a7090 | Michael Hanselmann | else:
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210 | 6c5a7090 | Michael Hanselmann | log_type, log_msg = args |
211 | 6c5a7090 | Michael Hanselmann | |
212 | 6c5a7090 | Michael Hanselmann | # The time is split to make serialization easier and not lose
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213 | 6c5a7090 | Michael Hanselmann | # precision.
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214 | 6c5a7090 | Michael Hanselmann | timestamp = utils.SplitTime(time.time()) |
215 | dfe57c22 | Michael Hanselmann | |
216 | 6c5a7090 | Michael Hanselmann | queue.acquire() |
217 | dfe57c22 | Michael Hanselmann | try:
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218 | 6c5a7090 | Michael Hanselmann | job.log_serial += 1
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219 | 6c5a7090 | Michael Hanselmann | op.log.append((job.log_serial, timestamp, log_type, log_msg)) |
220 | 6c5a7090 | Michael Hanselmann | |
221 | dfe57c22 | Michael Hanselmann | job.change.notifyAll() |
222 | dfe57c22 | Michael Hanselmann | finally:
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223 | 6c5a7090 | Michael Hanselmann | queue.release() |
224 | dfe57c22 | Michael Hanselmann | |
225 | 6c5a7090 | Michael Hanselmann | # Make sure not to hold lock while _Log is called
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226 | dfe57c22 | Michael Hanselmann | result = proc.ExecOpCode(input_opcode, _Log) |
227 | 85f03e0d | Michael Hanselmann | |
228 | 85f03e0d | Michael Hanselmann | queue.acquire() |
229 | 85f03e0d | Michael Hanselmann | try:
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230 | 85f03e0d | Michael Hanselmann | op.status = constants.OP_STATUS_SUCCESS |
231 | 85f03e0d | Michael Hanselmann | op.result = result |
232 | 85f03e0d | Michael Hanselmann | queue.UpdateJobUnlocked(job) |
233 | 85f03e0d | Michael Hanselmann | finally:
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234 | 85f03e0d | Michael Hanselmann | queue.release() |
235 | 85f03e0d | Michael Hanselmann | |
236 | 85f03e0d | Michael Hanselmann | logging.debug("Op %s/%s: Successfully finished %s",
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237 | 85f03e0d | Michael Hanselmann | idx + 1, count, op)
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238 | 85f03e0d | Michael Hanselmann | except Exception, err: |
239 | 85f03e0d | Michael Hanselmann | queue.acquire() |
240 | 85f03e0d | Michael Hanselmann | try:
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241 | 85f03e0d | Michael Hanselmann | try:
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242 | 85f03e0d | Michael Hanselmann | op.status = constants.OP_STATUS_ERROR |
243 | 85f03e0d | Michael Hanselmann | op.result = str(err)
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244 | 85f03e0d | Michael Hanselmann | logging.debug("Op %s/%s: Error in %s", idx + 1, count, op) |
245 | 85f03e0d | Michael Hanselmann | finally:
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246 | 85f03e0d | Michael Hanselmann | queue.UpdateJobUnlocked(job) |
247 | 85f03e0d | Michael Hanselmann | finally:
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248 | 85f03e0d | Michael Hanselmann | queue.release() |
249 | 85f03e0d | Michael Hanselmann | raise
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250 | 85f03e0d | Michael Hanselmann | |
251 | 85f03e0d | Michael Hanselmann | except errors.GenericError, err:
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252 | 85f03e0d | Michael Hanselmann | logging.exception("Ganeti exception")
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253 | 85f03e0d | Michael Hanselmann | except:
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254 | 85f03e0d | Michael Hanselmann | logging.exception("Unhandled exception")
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255 | e2715f69 | Michael Hanselmann | finally:
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256 | 85f03e0d | Michael Hanselmann | queue.acquire() |
257 | 85f03e0d | Michael Hanselmann | try:
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258 | 65548ed5 | Michael Hanselmann | try:
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259 | 65548ed5 | Michael Hanselmann | job.run_op_idx = -1
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260 | 65548ed5 | Michael Hanselmann | queue.UpdateJobUnlocked(job) |
261 | 65548ed5 | Michael Hanselmann | finally:
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262 | 65548ed5 | Michael Hanselmann | job_id = job.id |
263 | 65548ed5 | Michael Hanselmann | status = job.CalcStatus() |
264 | 85f03e0d | Michael Hanselmann | finally:
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265 | 85f03e0d | Michael Hanselmann | queue.release() |
266 | e2715f69 | Michael Hanselmann | logging.debug("Worker %s finished job %s, status = %s",
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267 | 85f03e0d | Michael Hanselmann | self.worker_id, job_id, status)
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268 | e2715f69 | Michael Hanselmann | |
269 | e2715f69 | Michael Hanselmann | |
270 | e2715f69 | Michael Hanselmann | class _JobQueueWorkerPool(workerpool.WorkerPool): |
271 | 5bdce580 | Michael Hanselmann | def __init__(self, queue): |
272 | e2715f69 | Michael Hanselmann | super(_JobQueueWorkerPool, self).__init__(JOBQUEUE_THREADS, |
273 | e2715f69 | Michael Hanselmann | _JobQueueWorker) |
274 | 5bdce580 | Michael Hanselmann | self.queue = queue
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275 | e2715f69 | Michael Hanselmann | |
276 | e2715f69 | Michael Hanselmann | |
277 | 85f03e0d | Michael Hanselmann | class JobQueue(object): |
278 | bac5ffc3 | Oleksiy Mishchenko | _RE_JOB_FILE = re.compile(r"^job-(%s)$" % constants.JOB_ID_TEMPLATE)
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279 | f1da30e6 | Michael Hanselmann | |
280 | db37da70 | Michael Hanselmann | def _RequireOpenQueue(fn): |
281 | db37da70 | Michael Hanselmann | """Decorator for "public" functions.
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282 | db37da70 | Michael Hanselmann |
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283 | db37da70 | Michael Hanselmann | This function should be used for all "public" functions. That is, functions
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284 | db37da70 | Michael Hanselmann | usually called from other classes.
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285 | db37da70 | Michael Hanselmann |
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286 | db37da70 | Michael Hanselmann | Important: Use this decorator only after utils.LockedMethod!
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287 | db37da70 | Michael Hanselmann |
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288 | db37da70 | Michael Hanselmann | Example:
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289 | db37da70 | Michael Hanselmann | @utils.LockedMethod
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290 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
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291 | db37da70 | Michael Hanselmann | def Example(self):
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292 | db37da70 | Michael Hanselmann | pass
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293 | db37da70 | Michael Hanselmann |
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294 | db37da70 | Michael Hanselmann | """
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295 | db37da70 | Michael Hanselmann | def wrapper(self, *args, **kwargs): |
296 | 04ab05ce | Michael Hanselmann | assert self._queue_lock is not None, "Queue should be open" |
297 | db37da70 | Michael Hanselmann | return fn(self, *args, **kwargs) |
298 | db37da70 | Michael Hanselmann | return wrapper
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299 | db37da70 | Michael Hanselmann | |
300 | 85f03e0d | Michael Hanselmann | def __init__(self, context): |
301 | 5bdce580 | Michael Hanselmann | self.context = context
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302 | ac0930b9 | Iustin Pop | self._memcache = {}
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303 | c3f0a12f | Iustin Pop | self._my_hostname = utils.HostInfo().name
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304 | f1da30e6 | Michael Hanselmann | |
305 | 85f03e0d | Michael Hanselmann | # Locking
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306 | 85f03e0d | Michael Hanselmann | self._lock = threading.Lock()
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307 | 85f03e0d | Michael Hanselmann | self.acquire = self._lock.acquire |
308 | 85f03e0d | Michael Hanselmann | self.release = self._lock.release |
309 | 85f03e0d | Michael Hanselmann | |
310 | 04ab05ce | Michael Hanselmann | # Initialize
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311 | 5d6fb8eb | Michael Hanselmann | self._queue_lock = jstore.InitAndVerifyQueue(must_lock=True) |
312 | f1da30e6 | Michael Hanselmann | |
313 | 04ab05ce | Michael Hanselmann | # Read serial file
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314 | 04ab05ce | Michael Hanselmann | self._last_serial = jstore.ReadSerial()
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315 | 04ab05ce | Michael Hanselmann | assert self._last_serial is not None, ("Serial file was modified between" |
316 | 04ab05ce | Michael Hanselmann | " check in jstore and here")
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317 | c4beba1c | Iustin Pop | |
318 | 23752136 | Michael Hanselmann | # Get initial list of nodes
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319 | 8e00939c | Michael Hanselmann | self._nodes = set(self.context.cfg.GetNodeList()) |
320 | 8e00939c | Michael Hanselmann | |
321 | 8e00939c | Michael Hanselmann | # Remove master node
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322 | 8e00939c | Michael Hanselmann | try:
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323 | 8e00939c | Michael Hanselmann | self._nodes.remove(self._my_hostname) |
324 | 8e00939c | Michael Hanselmann | except ValueError: |
325 | 8e00939c | Michael Hanselmann | pass
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326 | 23752136 | Michael Hanselmann | |
327 | 23752136 | Michael Hanselmann | # TODO: Check consistency across nodes
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328 | 23752136 | Michael Hanselmann | |
329 | 85f03e0d | Michael Hanselmann | # Setup worker pool
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330 | 5bdce580 | Michael Hanselmann | self._wpool = _JobQueueWorkerPool(self) |
331 | 85f03e0d | Michael Hanselmann | |
332 | 85f03e0d | Michael Hanselmann | # We need to lock here because WorkerPool.AddTask() may start a job while
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333 | 85f03e0d | Michael Hanselmann | # we're still doing our work.
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334 | 85f03e0d | Michael Hanselmann | self.acquire()
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335 | 85f03e0d | Michael Hanselmann | try:
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336 | 85f03e0d | Michael Hanselmann | for job in self._GetJobsUnlocked(None): |
337 | 85f03e0d | Michael Hanselmann | status = job.CalcStatus() |
338 | 85f03e0d | Michael Hanselmann | |
339 | 85f03e0d | Michael Hanselmann | if status in (constants.JOB_STATUS_QUEUED, ): |
340 | 85f03e0d | Michael Hanselmann | self._wpool.AddTask(job)
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341 | 85f03e0d | Michael Hanselmann | |
342 | 85f03e0d | Michael Hanselmann | elif status in (constants.JOB_STATUS_RUNNING, ): |
343 | 85f03e0d | Michael Hanselmann | logging.warning("Unfinished job %s found: %s", job.id, job)
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344 | 85f03e0d | Michael Hanselmann | try:
|
345 | 85f03e0d | Michael Hanselmann | for op in job.ops: |
346 | 85f03e0d | Michael Hanselmann | op.status = constants.OP_STATUS_ERROR |
347 | 85f03e0d | Michael Hanselmann | op.result = "Unclean master daemon shutdown"
|
348 | 85f03e0d | Michael Hanselmann | finally:
|
349 | 85f03e0d | Michael Hanselmann | self.UpdateJobUnlocked(job)
|
350 | 85f03e0d | Michael Hanselmann | finally:
|
351 | 85f03e0d | Michael Hanselmann | self.release()
|
352 | 85f03e0d | Michael Hanselmann | |
353 | d2e03a33 | Michael Hanselmann | @utils.LockedMethod
|
354 | d2e03a33 | Michael Hanselmann | @_RequireOpenQueue
|
355 | d2e03a33 | Michael Hanselmann | def AddNode(self, node_name): |
356 | d2e03a33 | Michael Hanselmann | assert node_name != self._my_hostname |
357 | 23752136 | Michael Hanselmann | |
358 | 9f774ee8 | Michael Hanselmann | # Clean queue directory on added node
|
359 | 9f774ee8 | Michael Hanselmann | rpc.call_jobqueue_purge(node_name) |
360 | 23752136 | Michael Hanselmann | |
361 | d2e03a33 | Michael Hanselmann | # Upload the whole queue excluding archived jobs
|
362 | d2e03a33 | Michael Hanselmann | files = [self._GetJobPath(job_id) for job_id in self._GetJobIDsUnlocked()] |
363 | 23752136 | Michael Hanselmann | |
364 | d2e03a33 | Michael Hanselmann | # Upload current serial file
|
365 | d2e03a33 | Michael Hanselmann | files.append(constants.JOB_QUEUE_SERIAL_FILE) |
366 | d2e03a33 | Michael Hanselmann | |
367 | d2e03a33 | Michael Hanselmann | for file_name in files: |
368 | 9f774ee8 | Michael Hanselmann | # Read file content
|
369 | 9f774ee8 | Michael Hanselmann | fd = open(file_name, "r") |
370 | 9f774ee8 | Michael Hanselmann | try:
|
371 | 9f774ee8 | Michael Hanselmann | content = fd.read() |
372 | 9f774ee8 | Michael Hanselmann | finally:
|
373 | 9f774ee8 | Michael Hanselmann | fd.close() |
374 | 9f774ee8 | Michael Hanselmann | |
375 | 9f774ee8 | Michael Hanselmann | result = rpc.call_jobqueue_update([node_name], file_name, content) |
376 | d2e03a33 | Michael Hanselmann | if not result[node_name]: |
377 | d2e03a33 | Michael Hanselmann | logging.error("Failed to upload %s to %s", file_name, node_name)
|
378 | d2e03a33 | Michael Hanselmann | |
379 | d2e03a33 | Michael Hanselmann | self._nodes.add(node_name)
|
380 | d2e03a33 | Michael Hanselmann | |
381 | d2e03a33 | Michael Hanselmann | @utils.LockedMethod
|
382 | d2e03a33 | Michael Hanselmann | @_RequireOpenQueue
|
383 | d2e03a33 | Michael Hanselmann | def RemoveNode(self, node_name): |
384 | 23752136 | Michael Hanselmann | try:
|
385 | d2e03a33 | Michael Hanselmann | # The queue is removed by the "leave node" RPC call.
|
386 | d2e03a33 | Michael Hanselmann | self._nodes.remove(node_name)
|
387 | d2e03a33 | Michael Hanselmann | except KeyError: |
388 | 23752136 | Michael Hanselmann | pass
|
389 | 23752136 | Michael Hanselmann | |
390 | 8e00939c | Michael Hanselmann | def _WriteAndReplicateFileUnlocked(self, file_name, data): |
391 | 8e00939c | Michael Hanselmann | """Writes a file locally and then replicates it to all nodes.
|
392 | 8e00939c | Michael Hanselmann |
|
393 | 8e00939c | Michael Hanselmann | """
|
394 | 8e00939c | Michael Hanselmann | utils.WriteFile(file_name, data=data) |
395 | 8e00939c | Michael Hanselmann | |
396 | 23752136 | Michael Hanselmann | failed_nodes = 0
|
397 | 9f774ee8 | Michael Hanselmann | result = rpc.call_jobqueue_update(self._nodes, file_name, data)
|
398 | 8e00939c | Michael Hanselmann | for node in self._nodes: |
399 | 23752136 | Michael Hanselmann | if not result[node]: |
400 | 23752136 | Michael Hanselmann | failed_nodes += 1
|
401 | 23752136 | Michael Hanselmann | logging.error("Copy of job queue file to node %s failed", node)
|
402 | 23752136 | Michael Hanselmann | |
403 | 23752136 | Michael Hanselmann | # TODO: check failed_nodes
|
404 | 23752136 | Michael Hanselmann | |
405 | abc1f2ce | Michael Hanselmann | def _RenameFileUnlocked(self, old, new): |
406 | abc1f2ce | Michael Hanselmann | os.rename(old, new) |
407 | abc1f2ce | Michael Hanselmann | |
408 | abc1f2ce | Michael Hanselmann | result = rpc.call_jobqueue_rename(self._nodes, old, new)
|
409 | abc1f2ce | Michael Hanselmann | for node in self._nodes: |
410 | abc1f2ce | Michael Hanselmann | if not result[node]: |
411 | abc1f2ce | Michael Hanselmann | logging.error("Moving %s to %s failed on %s", old, new, node)
|
412 | abc1f2ce | Michael Hanselmann | |
413 | abc1f2ce | Michael Hanselmann | # TODO: check failed nodes
|
414 | abc1f2ce | Michael Hanselmann | |
415 | 85f03e0d | Michael Hanselmann | def _FormatJobID(self, job_id): |
416 | 85f03e0d | Michael Hanselmann | if not isinstance(job_id, (int, long)): |
417 | 85f03e0d | Michael Hanselmann | raise errors.ProgrammerError("Job ID '%s' not numeric" % job_id) |
418 | 85f03e0d | Michael Hanselmann | if job_id < 0: |
419 | 85f03e0d | Michael Hanselmann | raise errors.ProgrammerError("Job ID %s is negative" % job_id) |
420 | 85f03e0d | Michael Hanselmann | |
421 | 85f03e0d | Michael Hanselmann | return str(job_id) |
422 | 85f03e0d | Michael Hanselmann | |
423 | 4c848b18 | Michael Hanselmann | def _NewSerialUnlocked(self): |
424 | f1da30e6 | Michael Hanselmann | """Generates a new job identifier.
|
425 | f1da30e6 | Michael Hanselmann |
|
426 | f1da30e6 | Michael Hanselmann | Job identifiers are unique during the lifetime of a cluster.
|
427 | f1da30e6 | Michael Hanselmann |
|
428 | f1da30e6 | Michael Hanselmann | Returns: A string representing the job identifier.
|
429 | f1da30e6 | Michael Hanselmann |
|
430 | f1da30e6 | Michael Hanselmann | """
|
431 | f1da30e6 | Michael Hanselmann | # New number
|
432 | f1da30e6 | Michael Hanselmann | serial = self._last_serial + 1 |
433 | f1da30e6 | Michael Hanselmann | |
434 | f1da30e6 | Michael Hanselmann | # Write to file
|
435 | 23752136 | Michael Hanselmann | self._WriteAndReplicateFileUnlocked(constants.JOB_QUEUE_SERIAL_FILE,
|
436 | 23752136 | Michael Hanselmann | "%s\n" % serial)
|
437 | f1da30e6 | Michael Hanselmann | |
438 | f1da30e6 | Michael Hanselmann | # Keep it only if we were able to write the file
|
439 | f1da30e6 | Michael Hanselmann | self._last_serial = serial
|
440 | f1da30e6 | Michael Hanselmann | |
441 | 85f03e0d | Michael Hanselmann | return self._FormatJobID(serial) |
442 | f1da30e6 | Michael Hanselmann | |
443 | 85f03e0d | Michael Hanselmann | @staticmethod
|
444 | 85f03e0d | Michael Hanselmann | def _GetJobPath(job_id): |
445 | f1da30e6 | Michael Hanselmann | return os.path.join(constants.QUEUE_DIR, "job-%s" % job_id) |
446 | f1da30e6 | Michael Hanselmann | |
447 | 85f03e0d | Michael Hanselmann | @staticmethod
|
448 | 85f03e0d | Michael Hanselmann | def _GetArchivedJobPath(job_id): |
449 | 0cb94105 | Michael Hanselmann | return os.path.join(constants.JOB_QUEUE_ARCHIVE_DIR, "job-%s" % job_id) |
450 | 0cb94105 | Michael Hanselmann | |
451 | 85f03e0d | Michael Hanselmann | @classmethod
|
452 | 85f03e0d | Michael Hanselmann | def _ExtractJobID(cls, name): |
453 | 85f03e0d | Michael Hanselmann | m = cls._RE_JOB_FILE.match(name) |
454 | fae737ac | Michael Hanselmann | if m:
|
455 | fae737ac | Michael Hanselmann | return m.group(1) |
456 | fae737ac | Michael Hanselmann | else:
|
457 | fae737ac | Michael Hanselmann | return None |
458 | fae737ac | Michael Hanselmann | |
459 | 911a495b | Iustin Pop | def _GetJobIDsUnlocked(self, archived=False): |
460 | 911a495b | Iustin Pop | """Return all known job IDs.
|
461 | 911a495b | Iustin Pop |
|
462 | 911a495b | Iustin Pop | If the parameter archived is True, archived jobs IDs will be
|
463 | 911a495b | Iustin Pop | included. Currently this argument is unused.
|
464 | 911a495b | Iustin Pop |
|
465 | ac0930b9 | Iustin Pop | The method only looks at disk because it's a requirement that all
|
466 | ac0930b9 | Iustin Pop | jobs are present on disk (so in the _memcache we don't have any
|
467 | ac0930b9 | Iustin Pop | extra IDs).
|
468 | ac0930b9 | Iustin Pop |
|
469 | 911a495b | Iustin Pop | """
|
470 | fae737ac | Michael Hanselmann | jlist = [self._ExtractJobID(name) for name in self._ListJobFiles()] |
471 | f0d874fe | Iustin Pop | jlist.sort() |
472 | f0d874fe | Iustin Pop | return jlist
|
473 | 911a495b | Iustin Pop | |
474 | f1da30e6 | Michael Hanselmann | def _ListJobFiles(self): |
475 | f1da30e6 | Michael Hanselmann | return [name for name in utils.ListVisibleFiles(constants.QUEUE_DIR) |
476 | f1da30e6 | Michael Hanselmann | if self._RE_JOB_FILE.match(name)] |
477 | f1da30e6 | Michael Hanselmann | |
478 | 911a495b | Iustin Pop | def _LoadJobUnlocked(self, job_id): |
479 | ac0930b9 | Iustin Pop | if job_id in self._memcache: |
480 | 205d71fd | Michael Hanselmann | logging.debug("Found job %s in memcache", job_id)
|
481 | ac0930b9 | Iustin Pop | return self._memcache[job_id] |
482 | ac0930b9 | Iustin Pop | |
483 | 911a495b | Iustin Pop | filepath = self._GetJobPath(job_id)
|
484 | f1da30e6 | Michael Hanselmann | logging.debug("Loading job from %s", filepath)
|
485 | f1da30e6 | Michael Hanselmann | try:
|
486 | f1da30e6 | Michael Hanselmann | fd = open(filepath, "r") |
487 | f1da30e6 | Michael Hanselmann | except IOError, err: |
488 | f1da30e6 | Michael Hanselmann | if err.errno in (errno.ENOENT, ): |
489 | f1da30e6 | Michael Hanselmann | return None |
490 | f1da30e6 | Michael Hanselmann | raise
|
491 | f1da30e6 | Michael Hanselmann | try:
|
492 | f1da30e6 | Michael Hanselmann | data = serializer.LoadJson(fd.read()) |
493 | f1da30e6 | Michael Hanselmann | finally:
|
494 | f1da30e6 | Michael Hanselmann | fd.close() |
495 | f1da30e6 | Michael Hanselmann | |
496 | ac0930b9 | Iustin Pop | job = _QueuedJob.Restore(self, data)
|
497 | ac0930b9 | Iustin Pop | self._memcache[job_id] = job
|
498 | 205d71fd | Michael Hanselmann | logging.debug("Added job %s to the cache", job_id)
|
499 | ac0930b9 | Iustin Pop | return job
|
500 | f1da30e6 | Michael Hanselmann | |
501 | f1da30e6 | Michael Hanselmann | def _GetJobsUnlocked(self, job_ids): |
502 | 911a495b | Iustin Pop | if not job_ids: |
503 | 911a495b | Iustin Pop | job_ids = self._GetJobIDsUnlocked()
|
504 | f1da30e6 | Michael Hanselmann | |
505 | 911a495b | Iustin Pop | return [self._LoadJobUnlocked(job_id) for job_id in job_ids] |
506 | f1da30e6 | Michael Hanselmann | |
507 | f1da30e6 | Michael Hanselmann | @utils.LockedMethod
|
508 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
509 | 4c848b18 | Michael Hanselmann | def SubmitJob(self, ops): |
510 | 85f03e0d | Michael Hanselmann | """Create and store a new job.
|
511 | f1da30e6 | Michael Hanselmann |
|
512 | 85f03e0d | Michael Hanselmann | This enters the job into our job queue and also puts it on the new
|
513 | 85f03e0d | Michael Hanselmann | queue, in order for it to be picked up by the queue processors.
|
514 | c3f0a12f | Iustin Pop |
|
515 | c3f0a12f | Iustin Pop | @type ops: list
|
516 | 205d71fd | Michael Hanselmann | @param ops: The list of OpCodes that will become the new job.
|
517 | c3f0a12f | Iustin Pop |
|
518 | c3f0a12f | Iustin Pop | """
|
519 | f1da30e6 | Michael Hanselmann | # Get job identifier
|
520 | 4c848b18 | Michael Hanselmann | job_id = self._NewSerialUnlocked()
|
521 | f1da30e6 | Michael Hanselmann | job = _QueuedJob(self, job_id, ops)
|
522 | f1da30e6 | Michael Hanselmann | |
523 | f1da30e6 | Michael Hanselmann | # Write to disk
|
524 | 85f03e0d | Michael Hanselmann | self.UpdateJobUnlocked(job)
|
525 | f1da30e6 | Michael Hanselmann | |
526 | 205d71fd | Michael Hanselmann | logging.debug("Added new job %s to the cache", job_id)
|
527 | ac0930b9 | Iustin Pop | self._memcache[job_id] = job
|
528 | ac0930b9 | Iustin Pop | |
529 | 85f03e0d | Michael Hanselmann | # Add to worker pool
|
530 | 85f03e0d | Michael Hanselmann | self._wpool.AddTask(job)
|
531 | 85f03e0d | Michael Hanselmann | |
532 | 85f03e0d | Michael Hanselmann | return job.id
|
533 | f1da30e6 | Michael Hanselmann | |
534 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
535 | 85f03e0d | Michael Hanselmann | def UpdateJobUnlocked(self, job): |
536 | f1da30e6 | Michael Hanselmann | filename = self._GetJobPath(job.id)
|
537 | 23752136 | Michael Hanselmann | data = serializer.DumpJson(job.Serialize(), indent=False)
|
538 | f1da30e6 | Michael Hanselmann | logging.debug("Writing job %s to %s", job.id, filename)
|
539 | 23752136 | Michael Hanselmann | self._WriteAndReplicateFileUnlocked(filename, data)
|
540 | 57f8615f | Michael Hanselmann | self._CleanCacheUnlocked([job.id])
|
541 | ac0930b9 | Iustin Pop | |
542 | dfe57c22 | Michael Hanselmann | # Notify waiters about potential changes
|
543 | 6c5a7090 | Michael Hanselmann | job.change.notifyAll() |
544 | dfe57c22 | Michael Hanselmann | |
545 | 57f8615f | Michael Hanselmann | def _CleanCacheUnlocked(self, exclude): |
546 | ac0930b9 | Iustin Pop | """Clean the memory cache.
|
547 | ac0930b9 | Iustin Pop |
|
548 | ac0930b9 | Iustin Pop | The exceptions argument contains job IDs that should not be
|
549 | ac0930b9 | Iustin Pop | cleaned.
|
550 | ac0930b9 | Iustin Pop |
|
551 | ac0930b9 | Iustin Pop | """
|
552 | 57f8615f | Michael Hanselmann | assert isinstance(exclude, list) |
553 | 85f03e0d | Michael Hanselmann | |
554 | ac0930b9 | Iustin Pop | for job in self._memcache.values(): |
555 | 57f8615f | Michael Hanselmann | if job.id in exclude: |
556 | ac0930b9 | Iustin Pop | continue
|
557 | 85f03e0d | Michael Hanselmann | if job.CalcStatus() not in (constants.JOB_STATUS_QUEUED, |
558 | 85f03e0d | Michael Hanselmann | constants.JOB_STATUS_RUNNING): |
559 | 205d71fd | Michael Hanselmann | logging.debug("Cleaning job %s from the cache", job.id)
|
560 | ac0930b9 | Iustin Pop | try:
|
561 | ac0930b9 | Iustin Pop | del self._memcache[job.id] |
562 | ac0930b9 | Iustin Pop | except KeyError: |
563 | ac0930b9 | Iustin Pop | pass
|
564 | f1da30e6 | Michael Hanselmann | |
565 | 6c5a7090 | Michael Hanselmann | @utils.LockedMethod
|
566 | dfe57c22 | Michael Hanselmann | @_RequireOpenQueue
|
567 | 6c5a7090 | Michael Hanselmann | def WaitForJobChanges(self, job_id, fields, prev_job_info, prev_log_serial): |
568 | 6c5a7090 | Michael Hanselmann | """Waits for changes in a job.
|
569 | 6c5a7090 | Michael Hanselmann |
|
570 | 6c5a7090 | Michael Hanselmann | @type job_id: string
|
571 | 6c5a7090 | Michael Hanselmann | @param job_id: Job identifier
|
572 | 6c5a7090 | Michael Hanselmann | @type fields: list of strings
|
573 | 6c5a7090 | Michael Hanselmann | @param fields: Which fields to check for changes
|
574 | 6c5a7090 | Michael Hanselmann | @type prev_job_info: list or None
|
575 | 6c5a7090 | Michael Hanselmann | @param prev_job_info: Last job information returned
|
576 | 6c5a7090 | Michael Hanselmann | @type prev_log_serial: int
|
577 | 6c5a7090 | Michael Hanselmann | @param prev_log_serial: Last job message serial number
|
578 | 6c5a7090 | Michael Hanselmann |
|
579 | 6c5a7090 | Michael Hanselmann | """
|
580 | dfe57c22 | Michael Hanselmann | logging.debug("Waiting for changes in job %s", job_id)
|
581 | dfe57c22 | Michael Hanselmann | |
582 | dfe57c22 | Michael Hanselmann | while True: |
583 | 6c5a7090 | Michael Hanselmann | job = self._LoadJobUnlocked(job_id)
|
584 | 6c5a7090 | Michael Hanselmann | if not job: |
585 | 6c5a7090 | Michael Hanselmann | logging.debug("Job %s not found", job_id)
|
586 | 6c5a7090 | Michael Hanselmann | new_state = None
|
587 | 6c5a7090 | Michael Hanselmann | break
|
588 | dfe57c22 | Michael Hanselmann | |
589 | 6c5a7090 | Michael Hanselmann | status = job.CalcStatus() |
590 | 6c5a7090 | Michael Hanselmann | job_info = self._GetJobInfoUnlocked(job, fields)
|
591 | 6c5a7090 | Michael Hanselmann | log_entries = job.GetLogEntries(prev_log_serial) |
592 | dfe57c22 | Michael Hanselmann | |
593 | dfe57c22 | Michael Hanselmann | # Serializing and deserializing data can cause type changes (e.g. from
|
594 | dfe57c22 | Michael Hanselmann | # tuple to list) or precision loss. We're doing it here so that we get
|
595 | dfe57c22 | Michael Hanselmann | # the same modifications as the data received from the client. Without
|
596 | dfe57c22 | Michael Hanselmann | # this, the comparison afterwards might fail without the data being
|
597 | dfe57c22 | Michael Hanselmann | # significantly different.
|
598 | 6c5a7090 | Michael Hanselmann | job_info = serializer.LoadJson(serializer.DumpJson(job_info)) |
599 | 6c5a7090 | Michael Hanselmann | log_entries = serializer.LoadJson(serializer.DumpJson(log_entries)) |
600 | dfe57c22 | Michael Hanselmann | |
601 | 6c5a7090 | Michael Hanselmann | if status not in (constants.JOB_STATUS_QUEUED, |
602 | 6c5a7090 | Michael Hanselmann | constants.JOB_STATUS_RUNNING): |
603 | 6c5a7090 | Michael Hanselmann | # Don't even try to wait if the job is no longer running, there will be
|
604 | 6c5a7090 | Michael Hanselmann | # no changes.
|
605 | dfe57c22 | Michael Hanselmann | break
|
606 | dfe57c22 | Michael Hanselmann | |
607 | 6c5a7090 | Michael Hanselmann | if (prev_job_info != job_info or |
608 | 6c5a7090 | Michael Hanselmann | (log_entries and prev_log_serial != log_entries[0][0])): |
609 | 6c5a7090 | Michael Hanselmann | break
|
610 | 6c5a7090 | Michael Hanselmann | |
611 | 6c5a7090 | Michael Hanselmann | logging.debug("Waiting again")
|
612 | 6c5a7090 | Michael Hanselmann | |
613 | 6c5a7090 | Michael Hanselmann | # Release the queue lock while waiting
|
614 | 6c5a7090 | Michael Hanselmann | job.change.wait() |
615 | dfe57c22 | Michael Hanselmann | |
616 | dfe57c22 | Michael Hanselmann | logging.debug("Job %s changed", job_id)
|
617 | dfe57c22 | Michael Hanselmann | |
618 | 6c5a7090 | Michael Hanselmann | return (job_info, log_entries)
|
619 | dfe57c22 | Michael Hanselmann | |
620 | f1da30e6 | Michael Hanselmann | @utils.LockedMethod
|
621 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
622 | 188c5e0a | Michael Hanselmann | def CancelJob(self, job_id): |
623 | 188c5e0a | Michael Hanselmann | """Cancels a job.
|
624 | 188c5e0a | Michael Hanselmann |
|
625 | 188c5e0a | Michael Hanselmann | @type job_id: string
|
626 | 188c5e0a | Michael Hanselmann | @param job_id: Job ID of job to be cancelled.
|
627 | 188c5e0a | Michael Hanselmann |
|
628 | 188c5e0a | Michael Hanselmann | """
|
629 | 188c5e0a | Michael Hanselmann | logging.debug("Cancelling job %s", job_id)
|
630 | 188c5e0a | Michael Hanselmann | |
631 | 85f03e0d | Michael Hanselmann | job = self._LoadJobUnlocked(job_id)
|
632 | 188c5e0a | Michael Hanselmann | if not job: |
633 | 188c5e0a | Michael Hanselmann | logging.debug("Job %s not found", job_id)
|
634 | 188c5e0a | Michael Hanselmann | return
|
635 | 188c5e0a | Michael Hanselmann | |
636 | 85f03e0d | Michael Hanselmann | if job.CalcStatus() not in (constants.JOB_STATUS_QUEUED,): |
637 | 188c5e0a | Michael Hanselmann | logging.debug("Job %s is no longer in the queue", job.id)
|
638 | 188c5e0a | Michael Hanselmann | return
|
639 | 188c5e0a | Michael Hanselmann | |
640 | 85f03e0d | Michael Hanselmann | try:
|
641 | 85f03e0d | Michael Hanselmann | for op in job.ops: |
642 | 85f03e0d | Michael Hanselmann | op.status = constants.OP_STATUS_ERROR |
643 | 85f03e0d | Michael Hanselmann | op.result = "Job cancelled by request"
|
644 | 85f03e0d | Michael Hanselmann | finally:
|
645 | 85f03e0d | Michael Hanselmann | self.UpdateJobUnlocked(job)
|
646 | 188c5e0a | Michael Hanselmann | |
647 | c609f802 | Michael Hanselmann | @utils.LockedMethod
|
648 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
649 | f1da30e6 | Michael Hanselmann | def ArchiveJob(self, job_id): |
650 | c609f802 | Michael Hanselmann | """Archives a job.
|
651 | c609f802 | Michael Hanselmann |
|
652 | c609f802 | Michael Hanselmann | @type job_id: string
|
653 | c609f802 | Michael Hanselmann | @param job_id: Job ID of job to be archived.
|
654 | c609f802 | Michael Hanselmann |
|
655 | c609f802 | Michael Hanselmann | """
|
656 | c609f802 | Michael Hanselmann | logging.debug("Archiving job %s", job_id)
|
657 | c609f802 | Michael Hanselmann | |
658 | c609f802 | Michael Hanselmann | job = self._LoadJobUnlocked(job_id)
|
659 | c609f802 | Michael Hanselmann | if not job: |
660 | c609f802 | Michael Hanselmann | logging.debug("Job %s not found", job_id)
|
661 | c609f802 | Michael Hanselmann | return
|
662 | c609f802 | Michael Hanselmann | |
663 | 85f03e0d | Michael Hanselmann | if job.CalcStatus() not in (constants.JOB_STATUS_CANCELED, |
664 | 85f03e0d | Michael Hanselmann | constants.JOB_STATUS_SUCCESS, |
665 | 85f03e0d | Michael Hanselmann | constants.JOB_STATUS_ERROR): |
666 | 85f03e0d | Michael Hanselmann | logging.debug("Job %s is not yet done", job.id)
|
667 | c609f802 | Michael Hanselmann | return
|
668 | c609f802 | Michael Hanselmann | |
669 | c609f802 | Michael Hanselmann | try:
|
670 | c609f802 | Michael Hanselmann | old = self._GetJobPath(job.id)
|
671 | c609f802 | Michael Hanselmann | new = self._GetArchivedJobPath(job.id)
|
672 | c609f802 | Michael Hanselmann | |
673 | abc1f2ce | Michael Hanselmann | self._RenameFileUnlocked(old, new)
|
674 | c609f802 | Michael Hanselmann | |
675 | c609f802 | Michael Hanselmann | logging.debug("Successfully archived job %s", job.id)
|
676 | c609f802 | Michael Hanselmann | finally:
|
677 | c609f802 | Michael Hanselmann | # Cleaning the cache because we don't know what os.rename actually did
|
678 | c609f802 | Michael Hanselmann | # and to be on the safe side.
|
679 | c609f802 | Michael Hanselmann | self._CleanCacheUnlocked([])
|
680 | f1da30e6 | Michael Hanselmann | |
681 | 85f03e0d | Michael Hanselmann | def _GetJobInfoUnlocked(self, job, fields): |
682 | e2715f69 | Michael Hanselmann | row = [] |
683 | e2715f69 | Michael Hanselmann | for fname in fields: |
684 | e2715f69 | Michael Hanselmann | if fname == "id": |
685 | e2715f69 | Michael Hanselmann | row.append(job.id) |
686 | e2715f69 | Michael Hanselmann | elif fname == "status": |
687 | 85f03e0d | Michael Hanselmann | row.append(job.CalcStatus()) |
688 | af30b2fd | Michael Hanselmann | elif fname == "ops": |
689 | 85f03e0d | Michael Hanselmann | row.append([op.input.__getstate__() for op in job.ops]) |
690 | af30b2fd | Michael Hanselmann | elif fname == "opresult": |
691 | 85f03e0d | Michael Hanselmann | row.append([op.result for op in job.ops]) |
692 | af30b2fd | Michael Hanselmann | elif fname == "opstatus": |
693 | 85f03e0d | Michael Hanselmann | row.append([op.status for op in job.ops]) |
694 | e2715f69 | Michael Hanselmann | else:
|
695 | e2715f69 | Michael Hanselmann | raise errors.OpExecError("Invalid job query field '%s'" % fname) |
696 | e2715f69 | Michael Hanselmann | return row
|
697 | e2715f69 | Michael Hanselmann | |
698 | 85f03e0d | Michael Hanselmann | @utils.LockedMethod
|
699 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
700 | e2715f69 | Michael Hanselmann | def QueryJobs(self, job_ids, fields): |
701 | e2715f69 | Michael Hanselmann | """Returns a list of jobs in queue.
|
702 | e2715f69 | Michael Hanselmann |
|
703 | e2715f69 | Michael Hanselmann | Args:
|
704 | e2715f69 | Michael Hanselmann | - job_ids: Sequence of job identifiers or None for all
|
705 | e2715f69 | Michael Hanselmann | - fields: Names of fields to return
|
706 | e2715f69 | Michael Hanselmann |
|
707 | e2715f69 | Michael Hanselmann | """
|
708 | 85f03e0d | Michael Hanselmann | jobs = [] |
709 | e2715f69 | Michael Hanselmann | |
710 | 85f03e0d | Michael Hanselmann | for job in self._GetJobsUnlocked(job_ids): |
711 | 85f03e0d | Michael Hanselmann | if job is None: |
712 | 85f03e0d | Michael Hanselmann | jobs.append(None)
|
713 | 85f03e0d | Michael Hanselmann | else:
|
714 | 85f03e0d | Michael Hanselmann | jobs.append(self._GetJobInfoUnlocked(job, fields))
|
715 | e2715f69 | Michael Hanselmann | |
716 | 85f03e0d | Michael Hanselmann | return jobs
|
717 | e2715f69 | Michael Hanselmann | |
718 | f1da30e6 | Michael Hanselmann | @utils.LockedMethod
|
719 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
720 | e2715f69 | Michael Hanselmann | def Shutdown(self): |
721 | e2715f69 | Michael Hanselmann | """Stops the job queue.
|
722 | e2715f69 | Michael Hanselmann |
|
723 | e2715f69 | Michael Hanselmann | """
|
724 | e2715f69 | Michael Hanselmann | self._wpool.TerminateWorkers()
|
725 | 85f03e0d | Michael Hanselmann | |
726 | 04ab05ce | Michael Hanselmann | self._queue_lock.Close()
|
727 | 04ab05ce | Michael Hanselmann | self._queue_lock = None |