root / lib / jqueue.py @ 70552c46
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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 | 70552c46 | Michael Hanselmann | def TimeStampNow(): |
52 | 70552c46 | Michael Hanselmann | return utils.SplitTime(time.time())
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53 | 70552c46 | Michael Hanselmann | |
54 | 70552c46 | Michael Hanselmann | |
55 | e2715f69 | Michael Hanselmann | class _QueuedOpCode(object): |
56 | e2715f69 | Michael Hanselmann | """Encasulates an opcode object.
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57 | e2715f69 | Michael Hanselmann |
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58 | f1048938 | Iustin Pop | The 'log' attribute holds the execution log and consists of tuples
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59 | 6c5a7090 | Michael Hanselmann | of the form (log_serial, timestamp, level, message).
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60 | f1048938 | Iustin Pop |
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61 | e2715f69 | Michael Hanselmann | """
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62 | 85f03e0d | Michael Hanselmann | def __init__(self, op): |
63 | 85f03e0d | Michael Hanselmann | self.input = op
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64 | 85f03e0d | Michael Hanselmann | self.status = constants.OP_STATUS_QUEUED
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65 | 85f03e0d | Michael Hanselmann | self.result = None |
66 | 85f03e0d | Michael Hanselmann | self.log = []
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67 | 70552c46 | Michael Hanselmann | self.start_timestamp = None |
68 | 70552c46 | Michael Hanselmann | self.end_timestamp = None |
69 | f1da30e6 | Michael Hanselmann | |
70 | f1da30e6 | Michael Hanselmann | @classmethod
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71 | f1da30e6 | Michael Hanselmann | def Restore(cls, state): |
72 | 85f03e0d | Michael Hanselmann | obj = _QueuedOpCode.__new__(cls) |
73 | 85f03e0d | Michael Hanselmann | obj.input = opcodes.OpCode.LoadOpCode(state["input"])
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74 | 85f03e0d | Michael Hanselmann | obj.status = state["status"]
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75 | 85f03e0d | Michael Hanselmann | obj.result = state["result"]
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76 | 85f03e0d | Michael Hanselmann | obj.log = state["log"]
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77 | 70552c46 | Michael Hanselmann | obj.start_timestamp = state.get("start_timestamp", None) |
78 | 70552c46 | Michael Hanselmann | obj.end_timestamp = state.get("end_timestamp", None) |
79 | f1da30e6 | Michael Hanselmann | return obj
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80 | f1da30e6 | Michael Hanselmann | |
81 | f1da30e6 | Michael Hanselmann | def Serialize(self): |
82 | 6c5a7090 | Michael Hanselmann | return {
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83 | 6c5a7090 | Michael Hanselmann | "input": self.input.__getstate__(), |
84 | 6c5a7090 | Michael Hanselmann | "status": self.status, |
85 | 6c5a7090 | Michael Hanselmann | "result": self.result, |
86 | 6c5a7090 | Michael Hanselmann | "log": self.log, |
87 | 70552c46 | Michael Hanselmann | "start_timestamp": self.start_timestamp, |
88 | 70552c46 | Michael Hanselmann | "end_timestamp": self.end_timestamp, |
89 | 6c5a7090 | Michael Hanselmann | } |
90 | f1048938 | Iustin Pop | |
91 | e2715f69 | Michael Hanselmann | |
92 | e2715f69 | Michael Hanselmann | class _QueuedJob(object): |
93 | e2715f69 | Michael Hanselmann | """In-memory job representation.
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94 | e2715f69 | Michael Hanselmann |
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95 | 6c5a7090 | Michael Hanselmann | This is what we use to track the user-submitted jobs. Locking must be taken
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96 | 6c5a7090 | Michael Hanselmann | care of by users of this class.
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97 | e2715f69 | Michael Hanselmann |
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98 | e2715f69 | Michael Hanselmann | """
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99 | 85f03e0d | Michael Hanselmann | def __init__(self, queue, job_id, ops): |
100 | e2715f69 | Michael Hanselmann | if not ops: |
101 | e2715f69 | Michael Hanselmann | # TODO
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102 | e2715f69 | Michael Hanselmann | raise Exception("No opcodes") |
103 | e2715f69 | Michael Hanselmann | |
104 | 85f03e0d | Michael Hanselmann | self.queue = queue
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105 | f1da30e6 | Michael Hanselmann | self.id = job_id
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106 | 85f03e0d | Michael Hanselmann | self.ops = [_QueuedOpCode(op) for op in ops] |
107 | 85f03e0d | Michael Hanselmann | self.run_op_index = -1 |
108 | 6c5a7090 | Michael Hanselmann | self.log_serial = 0 |
109 | 6c5a7090 | Michael Hanselmann | |
110 | 6c5a7090 | Michael Hanselmann | # Condition to wait for changes
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111 | 6c5a7090 | Michael Hanselmann | self.change = threading.Condition(self.queue._lock) |
112 | f1da30e6 | Michael Hanselmann | |
113 | f1da30e6 | Michael Hanselmann | @classmethod
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114 | 85f03e0d | Michael Hanselmann | def Restore(cls, queue, state): |
115 | 85f03e0d | Michael Hanselmann | obj = _QueuedJob.__new__(cls) |
116 | 85f03e0d | Michael Hanselmann | obj.queue = queue |
117 | 85f03e0d | Michael Hanselmann | obj.id = state["id"]
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118 | 85f03e0d | Michael Hanselmann | obj.run_op_index = state["run_op_index"]
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119 | 6c5a7090 | Michael Hanselmann | |
120 | 6c5a7090 | Michael Hanselmann | obj.ops = [] |
121 | 6c5a7090 | Michael Hanselmann | obj.log_serial = 0
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122 | 6c5a7090 | Michael Hanselmann | for op_state in state["ops"]: |
123 | 6c5a7090 | Michael Hanselmann | op = _QueuedOpCode.Restore(op_state) |
124 | 6c5a7090 | Michael Hanselmann | for log_entry in op.log: |
125 | 6c5a7090 | Michael Hanselmann | obj.log_serial = max(obj.log_serial, log_entry[0]) |
126 | 6c5a7090 | Michael Hanselmann | obj.ops.append(op) |
127 | 6c5a7090 | Michael Hanselmann | |
128 | 6c5a7090 | Michael Hanselmann | # Condition to wait for changes
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129 | 6c5a7090 | Michael Hanselmann | obj.change = threading.Condition(obj.queue._lock) |
130 | 6c5a7090 | Michael Hanselmann | |
131 | f1da30e6 | Michael Hanselmann | return obj
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132 | f1da30e6 | Michael Hanselmann | |
133 | f1da30e6 | Michael Hanselmann | def Serialize(self): |
134 | f1da30e6 | Michael Hanselmann | return {
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135 | f1da30e6 | Michael Hanselmann | "id": self.id, |
136 | 85f03e0d | Michael Hanselmann | "ops": [op.Serialize() for op in self.ops], |
137 | f1048938 | Iustin Pop | "run_op_index": self.run_op_index, |
138 | f1da30e6 | Michael Hanselmann | } |
139 | f1da30e6 | Michael Hanselmann | |
140 | 85f03e0d | Michael Hanselmann | def CalcStatus(self): |
141 | e2715f69 | Michael Hanselmann | status = constants.JOB_STATUS_QUEUED |
142 | e2715f69 | Michael Hanselmann | |
143 | e2715f69 | Michael Hanselmann | all_success = True
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144 | 85f03e0d | Michael Hanselmann | for op in self.ops: |
145 | 85f03e0d | Michael Hanselmann | if op.status == constants.OP_STATUS_SUCCESS:
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146 | e2715f69 | Michael Hanselmann | continue
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147 | e2715f69 | Michael Hanselmann | |
148 | e2715f69 | Michael Hanselmann | all_success = False
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149 | e2715f69 | Michael Hanselmann | |
150 | 85f03e0d | Michael Hanselmann | if op.status == constants.OP_STATUS_QUEUED:
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151 | e2715f69 | Michael Hanselmann | pass
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152 | 85f03e0d | Michael Hanselmann | elif op.status == constants.OP_STATUS_RUNNING:
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153 | e2715f69 | Michael Hanselmann | status = constants.JOB_STATUS_RUNNING |
154 | 85f03e0d | Michael Hanselmann | elif op.status == constants.OP_STATUS_ERROR:
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155 | f1da30e6 | Michael Hanselmann | status = constants.JOB_STATUS_ERROR |
156 | f1da30e6 | Michael Hanselmann | # The whole job fails if one opcode failed
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157 | f1da30e6 | Michael Hanselmann | break
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158 | 85f03e0d | Michael Hanselmann | elif op.status == constants.OP_STATUS_CANCELED:
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159 | 4cb1d919 | Michael Hanselmann | status = constants.OP_STATUS_CANCELED |
160 | 4cb1d919 | Michael Hanselmann | break
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161 | e2715f69 | Michael Hanselmann | |
162 | e2715f69 | Michael Hanselmann | if all_success:
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163 | e2715f69 | Michael Hanselmann | status = constants.JOB_STATUS_SUCCESS |
164 | e2715f69 | Michael Hanselmann | |
165 | e2715f69 | Michael Hanselmann | return status
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166 | e2715f69 | Michael Hanselmann | |
167 | 6c5a7090 | Michael Hanselmann | def GetLogEntries(self, newer_than): |
168 | 6c5a7090 | Michael Hanselmann | if newer_than is None: |
169 | 6c5a7090 | Michael Hanselmann | serial = -1
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170 | 6c5a7090 | Michael Hanselmann | else:
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171 | 6c5a7090 | Michael Hanselmann | serial = newer_than |
172 | 6c5a7090 | Michael Hanselmann | |
173 | 6c5a7090 | Michael Hanselmann | entries = [] |
174 | 6c5a7090 | Michael Hanselmann | for op in self.ops: |
175 | 6c5a7090 | Michael Hanselmann | entries.extend(filter(lambda entry: entry[0] > newer_than, op.log)) |
176 | 6c5a7090 | Michael Hanselmann | |
177 | 6c5a7090 | Michael Hanselmann | return entries
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178 | 6c5a7090 | Michael Hanselmann | |
179 | f1048938 | Iustin Pop | |
180 | 85f03e0d | Michael Hanselmann | class _JobQueueWorker(workerpool.BaseWorker): |
181 | 85f03e0d | Michael Hanselmann | def RunTask(self, job): |
182 | e2715f69 | Michael Hanselmann | """Job executor.
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183 | e2715f69 | Michael Hanselmann |
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184 | 6c5a7090 | Michael Hanselmann | This functions processes a job. It is closely tied to the _QueuedJob and
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185 | 6c5a7090 | Michael Hanselmann | _QueuedOpCode classes.
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186 | e2715f69 | Michael Hanselmann |
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187 | e2715f69 | Michael Hanselmann | """
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188 | e2715f69 | Michael Hanselmann | logging.debug("Worker %s processing job %s",
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189 | e2715f69 | Michael Hanselmann | self.worker_id, job.id)
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190 | 5bdce580 | Michael Hanselmann | proc = mcpu.Processor(self.pool.queue.context)
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191 | 85f03e0d | Michael Hanselmann | queue = job.queue |
192 | e2715f69 | Michael Hanselmann | try:
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193 | 85f03e0d | Michael Hanselmann | try:
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194 | 85f03e0d | Michael Hanselmann | count = len(job.ops)
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195 | 85f03e0d | Michael Hanselmann | for idx, op in enumerate(job.ops): |
196 | 85f03e0d | Michael Hanselmann | try:
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197 | 85f03e0d | Michael Hanselmann | logging.debug("Op %s/%s: Starting %s", idx + 1, count, op) |
198 | 85f03e0d | Michael Hanselmann | |
199 | 85f03e0d | Michael Hanselmann | queue.acquire() |
200 | 85f03e0d | Michael Hanselmann | try:
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201 | 85f03e0d | Michael Hanselmann | job.run_op_index = idx |
202 | 85f03e0d | Michael Hanselmann | op.status = constants.OP_STATUS_RUNNING |
203 | 85f03e0d | Michael Hanselmann | op.result = None
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204 | 70552c46 | Michael Hanselmann | op.start_timestamp = TimeStampNow() |
205 | 85f03e0d | Michael Hanselmann | queue.UpdateJobUnlocked(job) |
206 | 85f03e0d | Michael Hanselmann | |
207 | 38206f3c | Iustin Pop | input_opcode = op.input |
208 | 85f03e0d | Michael Hanselmann | finally:
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209 | 85f03e0d | Michael Hanselmann | queue.release() |
210 | 85f03e0d | Michael Hanselmann | |
211 | dfe57c22 | Michael Hanselmann | def _Log(*args): |
212 | 6c5a7090 | Michael Hanselmann | """Append a log entry.
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213 | 6c5a7090 | Michael Hanselmann |
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214 | 6c5a7090 | Michael Hanselmann | """
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215 | 6c5a7090 | Michael Hanselmann | assert len(args) < 3 |
216 | 6c5a7090 | Michael Hanselmann | |
217 | 6c5a7090 | Michael Hanselmann | if len(args) == 1: |
218 | 6c5a7090 | Michael Hanselmann | log_type = constants.ELOG_MESSAGE |
219 | 6c5a7090 | Michael Hanselmann | log_msg = args[0]
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220 | 6c5a7090 | Michael Hanselmann | else:
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221 | 6c5a7090 | Michael Hanselmann | log_type, log_msg = args |
222 | 6c5a7090 | Michael Hanselmann | |
223 | 6c5a7090 | Michael Hanselmann | # The time is split to make serialization easier and not lose
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224 | 6c5a7090 | Michael Hanselmann | # precision.
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225 | 6c5a7090 | Michael Hanselmann | timestamp = utils.SplitTime(time.time()) |
226 | dfe57c22 | Michael Hanselmann | |
227 | 6c5a7090 | Michael Hanselmann | queue.acquire() |
228 | dfe57c22 | Michael Hanselmann | try:
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229 | 6c5a7090 | Michael Hanselmann | job.log_serial += 1
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230 | 6c5a7090 | Michael Hanselmann | op.log.append((job.log_serial, timestamp, log_type, log_msg)) |
231 | 6c5a7090 | Michael Hanselmann | |
232 | dfe57c22 | Michael Hanselmann | job.change.notifyAll() |
233 | dfe57c22 | Michael Hanselmann | finally:
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234 | 6c5a7090 | Michael Hanselmann | queue.release() |
235 | dfe57c22 | Michael Hanselmann | |
236 | 6c5a7090 | Michael Hanselmann | # Make sure not to hold lock while _Log is called
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237 | dfe57c22 | Michael Hanselmann | result = proc.ExecOpCode(input_opcode, _Log) |
238 | 85f03e0d | Michael Hanselmann | |
239 | 85f03e0d | Michael Hanselmann | queue.acquire() |
240 | 85f03e0d | Michael Hanselmann | try:
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241 | 85f03e0d | Michael Hanselmann | op.status = constants.OP_STATUS_SUCCESS |
242 | 85f03e0d | Michael Hanselmann | op.result = result |
243 | 70552c46 | Michael Hanselmann | op.end_timestamp = TimeStampNow() |
244 | 85f03e0d | Michael Hanselmann | queue.UpdateJobUnlocked(job) |
245 | 85f03e0d | Michael Hanselmann | finally:
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246 | 85f03e0d | Michael Hanselmann | queue.release() |
247 | 85f03e0d | Michael Hanselmann | |
248 | 85f03e0d | Michael Hanselmann | logging.debug("Op %s/%s: Successfully finished %s",
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249 | 85f03e0d | Michael Hanselmann | idx + 1, count, op)
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250 | 85f03e0d | Michael Hanselmann | except Exception, err: |
251 | 85f03e0d | Michael Hanselmann | queue.acquire() |
252 | 85f03e0d | Michael Hanselmann | try:
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253 | 85f03e0d | Michael Hanselmann | try:
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254 | 85f03e0d | Michael Hanselmann | op.status = constants.OP_STATUS_ERROR |
255 | 85f03e0d | Michael Hanselmann | op.result = str(err)
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256 | 70552c46 | Michael Hanselmann | op.end_timestamp = TimeStampNow() |
257 | 85f03e0d | Michael Hanselmann | logging.debug("Op %s/%s: Error in %s", idx + 1, count, op) |
258 | 85f03e0d | Michael Hanselmann | finally:
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259 | 85f03e0d | Michael Hanselmann | queue.UpdateJobUnlocked(job) |
260 | 85f03e0d | Michael Hanselmann | finally:
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261 | 85f03e0d | Michael Hanselmann | queue.release() |
262 | 85f03e0d | Michael Hanselmann | raise
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263 | 85f03e0d | Michael Hanselmann | |
264 | 85f03e0d | Michael Hanselmann | except errors.GenericError, err:
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265 | 85f03e0d | Michael Hanselmann | logging.exception("Ganeti exception")
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266 | 85f03e0d | Michael Hanselmann | except:
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267 | 85f03e0d | Michael Hanselmann | logging.exception("Unhandled exception")
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268 | e2715f69 | Michael Hanselmann | finally:
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269 | 85f03e0d | Michael Hanselmann | queue.acquire() |
270 | 85f03e0d | Michael Hanselmann | try:
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271 | 65548ed5 | Michael Hanselmann | try:
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272 | 65548ed5 | Michael Hanselmann | job.run_op_idx = -1
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273 | 65548ed5 | Michael Hanselmann | queue.UpdateJobUnlocked(job) |
274 | 65548ed5 | Michael Hanselmann | finally:
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275 | 65548ed5 | Michael Hanselmann | job_id = job.id |
276 | 65548ed5 | Michael Hanselmann | status = job.CalcStatus() |
277 | 85f03e0d | Michael Hanselmann | finally:
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278 | 85f03e0d | Michael Hanselmann | queue.release() |
279 | e2715f69 | Michael Hanselmann | logging.debug("Worker %s finished job %s, status = %s",
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280 | 85f03e0d | Michael Hanselmann | self.worker_id, job_id, status)
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281 | e2715f69 | Michael Hanselmann | |
282 | e2715f69 | Michael Hanselmann | |
283 | e2715f69 | Michael Hanselmann | class _JobQueueWorkerPool(workerpool.WorkerPool): |
284 | 5bdce580 | Michael Hanselmann | def __init__(self, queue): |
285 | e2715f69 | Michael Hanselmann | super(_JobQueueWorkerPool, self).__init__(JOBQUEUE_THREADS, |
286 | e2715f69 | Michael Hanselmann | _JobQueueWorker) |
287 | 5bdce580 | Michael Hanselmann | self.queue = queue
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288 | e2715f69 | Michael Hanselmann | |
289 | e2715f69 | Michael Hanselmann | |
290 | 85f03e0d | Michael Hanselmann | class JobQueue(object): |
291 | bac5ffc3 | Oleksiy Mishchenko | _RE_JOB_FILE = re.compile(r"^job-(%s)$" % constants.JOB_ID_TEMPLATE)
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292 | f1da30e6 | Michael Hanselmann | |
293 | db37da70 | Michael Hanselmann | def _RequireOpenQueue(fn): |
294 | db37da70 | Michael Hanselmann | """Decorator for "public" functions.
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295 | db37da70 | Michael Hanselmann |
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296 | db37da70 | Michael Hanselmann | This function should be used for all "public" functions. That is, functions
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297 | db37da70 | Michael Hanselmann | usually called from other classes.
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298 | db37da70 | Michael Hanselmann |
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299 | db37da70 | Michael Hanselmann | Important: Use this decorator only after utils.LockedMethod!
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300 | db37da70 | Michael Hanselmann |
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301 | db37da70 | Michael Hanselmann | Example:
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302 | db37da70 | Michael Hanselmann | @utils.LockedMethod
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303 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
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304 | db37da70 | Michael Hanselmann | def Example(self):
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305 | db37da70 | Michael Hanselmann | pass
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306 | db37da70 | Michael Hanselmann |
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307 | db37da70 | Michael Hanselmann | """
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308 | db37da70 | Michael Hanselmann | def wrapper(self, *args, **kwargs): |
309 | 04ab05ce | Michael Hanselmann | assert self._queue_lock is not None, "Queue should be open" |
310 | db37da70 | Michael Hanselmann | return fn(self, *args, **kwargs) |
311 | db37da70 | Michael Hanselmann | return wrapper
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312 | db37da70 | Michael Hanselmann | |
313 | 85f03e0d | Michael Hanselmann | def __init__(self, context): |
314 | 5bdce580 | Michael Hanselmann | self.context = context
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315 | ac0930b9 | Iustin Pop | self._memcache = {}
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316 | c3f0a12f | Iustin Pop | self._my_hostname = utils.HostInfo().name
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317 | f1da30e6 | Michael Hanselmann | |
318 | 85f03e0d | Michael Hanselmann | # Locking
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319 | 85f03e0d | Michael Hanselmann | self._lock = threading.Lock()
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320 | 85f03e0d | Michael Hanselmann | self.acquire = self._lock.acquire |
321 | 85f03e0d | Michael Hanselmann | self.release = self._lock.release |
322 | 85f03e0d | Michael Hanselmann | |
323 | 04ab05ce | Michael Hanselmann | # Initialize
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324 | 5d6fb8eb | Michael Hanselmann | self._queue_lock = jstore.InitAndVerifyQueue(must_lock=True) |
325 | f1da30e6 | Michael Hanselmann | |
326 | 04ab05ce | Michael Hanselmann | # Read serial file
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327 | 04ab05ce | Michael Hanselmann | self._last_serial = jstore.ReadSerial()
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328 | 04ab05ce | Michael Hanselmann | assert self._last_serial is not None, ("Serial file was modified between" |
329 | 04ab05ce | Michael Hanselmann | " check in jstore and here")
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330 | c4beba1c | Iustin Pop | |
331 | 23752136 | Michael Hanselmann | # Get initial list of nodes
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332 | 8e00939c | Michael Hanselmann | self._nodes = set(self.context.cfg.GetNodeList()) |
333 | 8e00939c | Michael Hanselmann | |
334 | 8e00939c | Michael Hanselmann | # Remove master node
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335 | 8e00939c | Michael Hanselmann | try:
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336 | 8e00939c | Michael Hanselmann | self._nodes.remove(self._my_hostname) |
337 | 8e00939c | Michael Hanselmann | except ValueError: |
338 | 8e00939c | Michael Hanselmann | pass
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339 | 23752136 | Michael Hanselmann | |
340 | 23752136 | Michael Hanselmann | # TODO: Check consistency across nodes
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341 | 23752136 | Michael Hanselmann | |
342 | 85f03e0d | Michael Hanselmann | # Setup worker pool
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343 | 5bdce580 | Michael Hanselmann | self._wpool = _JobQueueWorkerPool(self) |
344 | 85f03e0d | Michael Hanselmann | |
345 | 85f03e0d | Michael Hanselmann | # We need to lock here because WorkerPool.AddTask() may start a job while
|
346 | 85f03e0d | Michael Hanselmann | # we're still doing our work.
|
347 | 85f03e0d | Michael Hanselmann | self.acquire()
|
348 | 85f03e0d | Michael Hanselmann | try:
|
349 | 85f03e0d | Michael Hanselmann | for job in self._GetJobsUnlocked(None): |
350 | 85f03e0d | Michael Hanselmann | status = job.CalcStatus() |
351 | 85f03e0d | Michael Hanselmann | |
352 | 85f03e0d | Michael Hanselmann | if status in (constants.JOB_STATUS_QUEUED, ): |
353 | 85f03e0d | Michael Hanselmann | self._wpool.AddTask(job)
|
354 | 85f03e0d | Michael Hanselmann | |
355 | 85f03e0d | Michael Hanselmann | elif status in (constants.JOB_STATUS_RUNNING, ): |
356 | 85f03e0d | Michael Hanselmann | logging.warning("Unfinished job %s found: %s", job.id, job)
|
357 | 85f03e0d | Michael Hanselmann | try:
|
358 | 85f03e0d | Michael Hanselmann | for op in job.ops: |
359 | 85f03e0d | Michael Hanselmann | op.status = constants.OP_STATUS_ERROR |
360 | 85f03e0d | Michael Hanselmann | op.result = "Unclean master daemon shutdown"
|
361 | 85f03e0d | Michael Hanselmann | finally:
|
362 | 85f03e0d | Michael Hanselmann | self.UpdateJobUnlocked(job)
|
363 | 85f03e0d | Michael Hanselmann | finally:
|
364 | 85f03e0d | Michael Hanselmann | self.release()
|
365 | 85f03e0d | Michael Hanselmann | |
366 | d2e03a33 | Michael Hanselmann | @utils.LockedMethod
|
367 | d2e03a33 | Michael Hanselmann | @_RequireOpenQueue
|
368 | d2e03a33 | Michael Hanselmann | def AddNode(self, node_name): |
369 | d2e03a33 | Michael Hanselmann | assert node_name != self._my_hostname |
370 | 23752136 | Michael Hanselmann | |
371 | 9f774ee8 | Michael Hanselmann | # Clean queue directory on added node
|
372 | 9f774ee8 | Michael Hanselmann | rpc.call_jobqueue_purge(node_name) |
373 | 23752136 | Michael Hanselmann | |
374 | d2e03a33 | Michael Hanselmann | # Upload the whole queue excluding archived jobs
|
375 | d2e03a33 | Michael Hanselmann | files = [self._GetJobPath(job_id) for job_id in self._GetJobIDsUnlocked()] |
376 | 23752136 | Michael Hanselmann | |
377 | d2e03a33 | Michael Hanselmann | # Upload current serial file
|
378 | d2e03a33 | Michael Hanselmann | files.append(constants.JOB_QUEUE_SERIAL_FILE) |
379 | d2e03a33 | Michael Hanselmann | |
380 | d2e03a33 | Michael Hanselmann | for file_name in files: |
381 | 9f774ee8 | Michael Hanselmann | # Read file content
|
382 | 9f774ee8 | Michael Hanselmann | fd = open(file_name, "r") |
383 | 9f774ee8 | Michael Hanselmann | try:
|
384 | 9f774ee8 | Michael Hanselmann | content = fd.read() |
385 | 9f774ee8 | Michael Hanselmann | finally:
|
386 | 9f774ee8 | Michael Hanselmann | fd.close() |
387 | 9f774ee8 | Michael Hanselmann | |
388 | 9f774ee8 | Michael Hanselmann | result = rpc.call_jobqueue_update([node_name], file_name, content) |
389 | d2e03a33 | Michael Hanselmann | if not result[node_name]: |
390 | d2e03a33 | Michael Hanselmann | logging.error("Failed to upload %s to %s", file_name, node_name)
|
391 | d2e03a33 | Michael Hanselmann | |
392 | d2e03a33 | Michael Hanselmann | self._nodes.add(node_name)
|
393 | d2e03a33 | Michael Hanselmann | |
394 | d2e03a33 | Michael Hanselmann | @utils.LockedMethod
|
395 | d2e03a33 | Michael Hanselmann | @_RequireOpenQueue
|
396 | d2e03a33 | Michael Hanselmann | def RemoveNode(self, node_name): |
397 | 23752136 | Michael Hanselmann | try:
|
398 | d2e03a33 | Michael Hanselmann | # The queue is removed by the "leave node" RPC call.
|
399 | d2e03a33 | Michael Hanselmann | self._nodes.remove(node_name)
|
400 | d2e03a33 | Michael Hanselmann | except KeyError: |
401 | 23752136 | Michael Hanselmann | pass
|
402 | 23752136 | Michael Hanselmann | |
403 | 8e00939c | Michael Hanselmann | def _WriteAndReplicateFileUnlocked(self, file_name, data): |
404 | 8e00939c | Michael Hanselmann | """Writes a file locally and then replicates it to all nodes.
|
405 | 8e00939c | Michael Hanselmann |
|
406 | 8e00939c | Michael Hanselmann | """
|
407 | 8e00939c | Michael Hanselmann | utils.WriteFile(file_name, data=data) |
408 | 8e00939c | Michael Hanselmann | |
409 | 23752136 | Michael Hanselmann | failed_nodes = 0
|
410 | 9f774ee8 | Michael Hanselmann | result = rpc.call_jobqueue_update(self._nodes, file_name, data)
|
411 | 8e00939c | Michael Hanselmann | for node in self._nodes: |
412 | 23752136 | Michael Hanselmann | if not result[node]: |
413 | 23752136 | Michael Hanselmann | failed_nodes += 1
|
414 | 23752136 | Michael Hanselmann | logging.error("Copy of job queue file to node %s failed", node)
|
415 | 23752136 | Michael Hanselmann | |
416 | 23752136 | Michael Hanselmann | # TODO: check failed_nodes
|
417 | 23752136 | Michael Hanselmann | |
418 | abc1f2ce | Michael Hanselmann | def _RenameFileUnlocked(self, old, new): |
419 | abc1f2ce | Michael Hanselmann | os.rename(old, new) |
420 | abc1f2ce | Michael Hanselmann | |
421 | abc1f2ce | Michael Hanselmann | result = rpc.call_jobqueue_rename(self._nodes, old, new)
|
422 | abc1f2ce | Michael Hanselmann | for node in self._nodes: |
423 | abc1f2ce | Michael Hanselmann | if not result[node]: |
424 | abc1f2ce | Michael Hanselmann | logging.error("Moving %s to %s failed on %s", old, new, node)
|
425 | abc1f2ce | Michael Hanselmann | |
426 | abc1f2ce | Michael Hanselmann | # TODO: check failed nodes
|
427 | abc1f2ce | Michael Hanselmann | |
428 | 85f03e0d | Michael Hanselmann | def _FormatJobID(self, job_id): |
429 | 85f03e0d | Michael Hanselmann | if not isinstance(job_id, (int, long)): |
430 | 85f03e0d | Michael Hanselmann | raise errors.ProgrammerError("Job ID '%s' not numeric" % job_id) |
431 | 85f03e0d | Michael Hanselmann | if job_id < 0: |
432 | 85f03e0d | Michael Hanselmann | raise errors.ProgrammerError("Job ID %s is negative" % job_id) |
433 | 85f03e0d | Michael Hanselmann | |
434 | 85f03e0d | Michael Hanselmann | return str(job_id) |
435 | 85f03e0d | Michael Hanselmann | |
436 | 4c848b18 | Michael Hanselmann | def _NewSerialUnlocked(self): |
437 | f1da30e6 | Michael Hanselmann | """Generates a new job identifier.
|
438 | f1da30e6 | Michael Hanselmann |
|
439 | f1da30e6 | Michael Hanselmann | Job identifiers are unique during the lifetime of a cluster.
|
440 | f1da30e6 | Michael Hanselmann |
|
441 | f1da30e6 | Michael Hanselmann | Returns: A string representing the job identifier.
|
442 | f1da30e6 | Michael Hanselmann |
|
443 | f1da30e6 | Michael Hanselmann | """
|
444 | f1da30e6 | Michael Hanselmann | # New number
|
445 | f1da30e6 | Michael Hanselmann | serial = self._last_serial + 1 |
446 | f1da30e6 | Michael Hanselmann | |
447 | f1da30e6 | Michael Hanselmann | # Write to file
|
448 | 23752136 | Michael Hanselmann | self._WriteAndReplicateFileUnlocked(constants.JOB_QUEUE_SERIAL_FILE,
|
449 | 23752136 | Michael Hanselmann | "%s\n" % serial)
|
450 | f1da30e6 | Michael Hanselmann | |
451 | f1da30e6 | Michael Hanselmann | # Keep it only if we were able to write the file
|
452 | f1da30e6 | Michael Hanselmann | self._last_serial = serial
|
453 | f1da30e6 | Michael Hanselmann | |
454 | 85f03e0d | Michael Hanselmann | return self._FormatJobID(serial) |
455 | f1da30e6 | Michael Hanselmann | |
456 | 85f03e0d | Michael Hanselmann | @staticmethod
|
457 | 85f03e0d | Michael Hanselmann | def _GetJobPath(job_id): |
458 | f1da30e6 | Michael Hanselmann | return os.path.join(constants.QUEUE_DIR, "job-%s" % job_id) |
459 | f1da30e6 | Michael Hanselmann | |
460 | 85f03e0d | Michael Hanselmann | @staticmethod
|
461 | 85f03e0d | Michael Hanselmann | def _GetArchivedJobPath(job_id): |
462 | 0cb94105 | Michael Hanselmann | return os.path.join(constants.JOB_QUEUE_ARCHIVE_DIR, "job-%s" % job_id) |
463 | 0cb94105 | Michael Hanselmann | |
464 | 85f03e0d | Michael Hanselmann | @classmethod
|
465 | 85f03e0d | Michael Hanselmann | def _ExtractJobID(cls, name): |
466 | 85f03e0d | Michael Hanselmann | m = cls._RE_JOB_FILE.match(name) |
467 | fae737ac | Michael Hanselmann | if m:
|
468 | fae737ac | Michael Hanselmann | return m.group(1) |
469 | fae737ac | Michael Hanselmann | else:
|
470 | fae737ac | Michael Hanselmann | return None |
471 | fae737ac | Michael Hanselmann | |
472 | 911a495b | Iustin Pop | def _GetJobIDsUnlocked(self, archived=False): |
473 | 911a495b | Iustin Pop | """Return all known job IDs.
|
474 | 911a495b | Iustin Pop |
|
475 | 911a495b | Iustin Pop | If the parameter archived is True, archived jobs IDs will be
|
476 | 911a495b | Iustin Pop | included. Currently this argument is unused.
|
477 | 911a495b | Iustin Pop |
|
478 | ac0930b9 | Iustin Pop | The method only looks at disk because it's a requirement that all
|
479 | ac0930b9 | Iustin Pop | jobs are present on disk (so in the _memcache we don't have any
|
480 | ac0930b9 | Iustin Pop | extra IDs).
|
481 | ac0930b9 | Iustin Pop |
|
482 | 911a495b | Iustin Pop | """
|
483 | fae737ac | Michael Hanselmann | jlist = [self._ExtractJobID(name) for name in self._ListJobFiles()] |
484 | f0d874fe | Iustin Pop | jlist.sort() |
485 | f0d874fe | Iustin Pop | return jlist
|
486 | 911a495b | Iustin Pop | |
487 | f1da30e6 | Michael Hanselmann | def _ListJobFiles(self): |
488 | f1da30e6 | Michael Hanselmann | return [name for name in utils.ListVisibleFiles(constants.QUEUE_DIR) |
489 | f1da30e6 | Michael Hanselmann | if self._RE_JOB_FILE.match(name)] |
490 | f1da30e6 | Michael Hanselmann | |
491 | 911a495b | Iustin Pop | def _LoadJobUnlocked(self, job_id): |
492 | ac0930b9 | Iustin Pop | if job_id in self._memcache: |
493 | 205d71fd | Michael Hanselmann | logging.debug("Found job %s in memcache", job_id)
|
494 | ac0930b9 | Iustin Pop | return self._memcache[job_id] |
495 | ac0930b9 | Iustin Pop | |
496 | 911a495b | Iustin Pop | filepath = self._GetJobPath(job_id)
|
497 | f1da30e6 | Michael Hanselmann | logging.debug("Loading job from %s", filepath)
|
498 | f1da30e6 | Michael Hanselmann | try:
|
499 | f1da30e6 | Michael Hanselmann | fd = open(filepath, "r") |
500 | f1da30e6 | Michael Hanselmann | except IOError, err: |
501 | f1da30e6 | Michael Hanselmann | if err.errno in (errno.ENOENT, ): |
502 | f1da30e6 | Michael Hanselmann | return None |
503 | f1da30e6 | Michael Hanselmann | raise
|
504 | f1da30e6 | Michael Hanselmann | try:
|
505 | f1da30e6 | Michael Hanselmann | data = serializer.LoadJson(fd.read()) |
506 | f1da30e6 | Michael Hanselmann | finally:
|
507 | f1da30e6 | Michael Hanselmann | fd.close() |
508 | f1da30e6 | Michael Hanselmann | |
509 | ac0930b9 | Iustin Pop | job = _QueuedJob.Restore(self, data)
|
510 | ac0930b9 | Iustin Pop | self._memcache[job_id] = job
|
511 | 205d71fd | Michael Hanselmann | logging.debug("Added job %s to the cache", job_id)
|
512 | ac0930b9 | Iustin Pop | return job
|
513 | f1da30e6 | Michael Hanselmann | |
514 | f1da30e6 | Michael Hanselmann | def _GetJobsUnlocked(self, job_ids): |
515 | 911a495b | Iustin Pop | if not job_ids: |
516 | 911a495b | Iustin Pop | job_ids = self._GetJobIDsUnlocked()
|
517 | f1da30e6 | Michael Hanselmann | |
518 | 911a495b | Iustin Pop | return [self._LoadJobUnlocked(job_id) for job_id in job_ids] |
519 | f1da30e6 | Michael Hanselmann | |
520 | f1da30e6 | Michael Hanselmann | @utils.LockedMethod
|
521 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
522 | 4c848b18 | Michael Hanselmann | def SubmitJob(self, ops): |
523 | 85f03e0d | Michael Hanselmann | """Create and store a new job.
|
524 | f1da30e6 | Michael Hanselmann |
|
525 | 85f03e0d | Michael Hanselmann | This enters the job into our job queue and also puts it on the new
|
526 | 85f03e0d | Michael Hanselmann | queue, in order for it to be picked up by the queue processors.
|
527 | c3f0a12f | Iustin Pop |
|
528 | c3f0a12f | Iustin Pop | @type ops: list
|
529 | 205d71fd | Michael Hanselmann | @param ops: The list of OpCodes that will become the new job.
|
530 | c3f0a12f | Iustin Pop |
|
531 | c3f0a12f | Iustin Pop | """
|
532 | f1da30e6 | Michael Hanselmann | # Get job identifier
|
533 | 4c848b18 | Michael Hanselmann | job_id = self._NewSerialUnlocked()
|
534 | f1da30e6 | Michael Hanselmann | job = _QueuedJob(self, job_id, ops)
|
535 | f1da30e6 | Michael Hanselmann | |
536 | f1da30e6 | Michael Hanselmann | # Write to disk
|
537 | 85f03e0d | Michael Hanselmann | self.UpdateJobUnlocked(job)
|
538 | f1da30e6 | Michael Hanselmann | |
539 | 205d71fd | Michael Hanselmann | logging.debug("Added new job %s to the cache", job_id)
|
540 | ac0930b9 | Iustin Pop | self._memcache[job_id] = job
|
541 | ac0930b9 | Iustin Pop | |
542 | 85f03e0d | Michael Hanselmann | # Add to worker pool
|
543 | 85f03e0d | Michael Hanselmann | self._wpool.AddTask(job)
|
544 | 85f03e0d | Michael Hanselmann | |
545 | 85f03e0d | Michael Hanselmann | return job.id
|
546 | f1da30e6 | Michael Hanselmann | |
547 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
548 | 85f03e0d | Michael Hanselmann | def UpdateJobUnlocked(self, job): |
549 | f1da30e6 | Michael Hanselmann | filename = self._GetJobPath(job.id)
|
550 | 23752136 | Michael Hanselmann | data = serializer.DumpJson(job.Serialize(), indent=False)
|
551 | f1da30e6 | Michael Hanselmann | logging.debug("Writing job %s to %s", job.id, filename)
|
552 | 23752136 | Michael Hanselmann | self._WriteAndReplicateFileUnlocked(filename, data)
|
553 | 57f8615f | Michael Hanselmann | self._CleanCacheUnlocked([job.id])
|
554 | ac0930b9 | Iustin Pop | |
555 | dfe57c22 | Michael Hanselmann | # Notify waiters about potential changes
|
556 | 6c5a7090 | Michael Hanselmann | job.change.notifyAll() |
557 | dfe57c22 | Michael Hanselmann | |
558 | 57f8615f | Michael Hanselmann | def _CleanCacheUnlocked(self, exclude): |
559 | ac0930b9 | Iustin Pop | """Clean the memory cache.
|
560 | ac0930b9 | Iustin Pop |
|
561 | ac0930b9 | Iustin Pop | The exceptions argument contains job IDs that should not be
|
562 | ac0930b9 | Iustin Pop | cleaned.
|
563 | ac0930b9 | Iustin Pop |
|
564 | ac0930b9 | Iustin Pop | """
|
565 | 57f8615f | Michael Hanselmann | assert isinstance(exclude, list) |
566 | 85f03e0d | Michael Hanselmann | |
567 | ac0930b9 | Iustin Pop | for job in self._memcache.values(): |
568 | 57f8615f | Michael Hanselmann | if job.id in exclude: |
569 | ac0930b9 | Iustin Pop | continue
|
570 | 85f03e0d | Michael Hanselmann | if job.CalcStatus() not in (constants.JOB_STATUS_QUEUED, |
571 | 85f03e0d | Michael Hanselmann | constants.JOB_STATUS_RUNNING): |
572 | 205d71fd | Michael Hanselmann | logging.debug("Cleaning job %s from the cache", job.id)
|
573 | ac0930b9 | Iustin Pop | try:
|
574 | ac0930b9 | Iustin Pop | del self._memcache[job.id] |
575 | ac0930b9 | Iustin Pop | except KeyError: |
576 | ac0930b9 | Iustin Pop | pass
|
577 | f1da30e6 | Michael Hanselmann | |
578 | 6c5a7090 | Michael Hanselmann | @utils.LockedMethod
|
579 | dfe57c22 | Michael Hanselmann | @_RequireOpenQueue
|
580 | 6c5a7090 | Michael Hanselmann | def WaitForJobChanges(self, job_id, fields, prev_job_info, prev_log_serial): |
581 | 6c5a7090 | Michael Hanselmann | """Waits for changes in a job.
|
582 | 6c5a7090 | Michael Hanselmann |
|
583 | 6c5a7090 | Michael Hanselmann | @type job_id: string
|
584 | 6c5a7090 | Michael Hanselmann | @param job_id: Job identifier
|
585 | 6c5a7090 | Michael Hanselmann | @type fields: list of strings
|
586 | 6c5a7090 | Michael Hanselmann | @param fields: Which fields to check for changes
|
587 | 6c5a7090 | Michael Hanselmann | @type prev_job_info: list or None
|
588 | 6c5a7090 | Michael Hanselmann | @param prev_job_info: Last job information returned
|
589 | 6c5a7090 | Michael Hanselmann | @type prev_log_serial: int
|
590 | 6c5a7090 | Michael Hanselmann | @param prev_log_serial: Last job message serial number
|
591 | 6c5a7090 | Michael Hanselmann |
|
592 | 6c5a7090 | Michael Hanselmann | """
|
593 | dfe57c22 | Michael Hanselmann | logging.debug("Waiting for changes in job %s", job_id)
|
594 | dfe57c22 | Michael Hanselmann | |
595 | dfe57c22 | Michael Hanselmann | while True: |
596 | 6c5a7090 | Michael Hanselmann | job = self._LoadJobUnlocked(job_id)
|
597 | 6c5a7090 | Michael Hanselmann | if not job: |
598 | 6c5a7090 | Michael Hanselmann | logging.debug("Job %s not found", job_id)
|
599 | 6c5a7090 | Michael Hanselmann | new_state = None
|
600 | 6c5a7090 | Michael Hanselmann | break
|
601 | dfe57c22 | Michael Hanselmann | |
602 | 6c5a7090 | Michael Hanselmann | status = job.CalcStatus() |
603 | 6c5a7090 | Michael Hanselmann | job_info = self._GetJobInfoUnlocked(job, fields)
|
604 | 6c5a7090 | Michael Hanselmann | log_entries = job.GetLogEntries(prev_log_serial) |
605 | dfe57c22 | Michael Hanselmann | |
606 | dfe57c22 | Michael Hanselmann | # Serializing and deserializing data can cause type changes (e.g. from
|
607 | dfe57c22 | Michael Hanselmann | # tuple to list) or precision loss. We're doing it here so that we get
|
608 | dfe57c22 | Michael Hanselmann | # the same modifications as the data received from the client. Without
|
609 | dfe57c22 | Michael Hanselmann | # this, the comparison afterwards might fail without the data being
|
610 | dfe57c22 | Michael Hanselmann | # significantly different.
|
611 | 6c5a7090 | Michael Hanselmann | job_info = serializer.LoadJson(serializer.DumpJson(job_info)) |
612 | 6c5a7090 | Michael Hanselmann | log_entries = serializer.LoadJson(serializer.DumpJson(log_entries)) |
613 | dfe57c22 | Michael Hanselmann | |
614 | 6c5a7090 | Michael Hanselmann | if status not in (constants.JOB_STATUS_QUEUED, |
615 | 6c5a7090 | Michael Hanselmann | constants.JOB_STATUS_RUNNING): |
616 | 6c5a7090 | Michael Hanselmann | # Don't even try to wait if the job is no longer running, there will be
|
617 | 6c5a7090 | Michael Hanselmann | # no changes.
|
618 | dfe57c22 | Michael Hanselmann | break
|
619 | dfe57c22 | Michael Hanselmann | |
620 | 6c5a7090 | Michael Hanselmann | if (prev_job_info != job_info or |
621 | 6c5a7090 | Michael Hanselmann | (log_entries and prev_log_serial != log_entries[0][0])): |
622 | 6c5a7090 | Michael Hanselmann | break
|
623 | 6c5a7090 | Michael Hanselmann | |
624 | 6c5a7090 | Michael Hanselmann | logging.debug("Waiting again")
|
625 | 6c5a7090 | Michael Hanselmann | |
626 | 6c5a7090 | Michael Hanselmann | # Release the queue lock while waiting
|
627 | 6c5a7090 | Michael Hanselmann | job.change.wait() |
628 | dfe57c22 | Michael Hanselmann | |
629 | dfe57c22 | Michael Hanselmann | logging.debug("Job %s changed", job_id)
|
630 | dfe57c22 | Michael Hanselmann | |
631 | 6c5a7090 | Michael Hanselmann | return (job_info, log_entries)
|
632 | dfe57c22 | Michael Hanselmann | |
633 | f1da30e6 | Michael Hanselmann | @utils.LockedMethod
|
634 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
635 | 188c5e0a | Michael Hanselmann | def CancelJob(self, job_id): |
636 | 188c5e0a | Michael Hanselmann | """Cancels a job.
|
637 | 188c5e0a | Michael Hanselmann |
|
638 | 188c5e0a | Michael Hanselmann | @type job_id: string
|
639 | 188c5e0a | Michael Hanselmann | @param job_id: Job ID of job to be cancelled.
|
640 | 188c5e0a | Michael Hanselmann |
|
641 | 188c5e0a | Michael Hanselmann | """
|
642 | 188c5e0a | Michael Hanselmann | logging.debug("Cancelling job %s", job_id)
|
643 | 188c5e0a | Michael Hanselmann | |
644 | 85f03e0d | Michael Hanselmann | job = self._LoadJobUnlocked(job_id)
|
645 | 188c5e0a | Michael Hanselmann | if not job: |
646 | 188c5e0a | Michael Hanselmann | logging.debug("Job %s not found", job_id)
|
647 | 188c5e0a | Michael Hanselmann | return
|
648 | 188c5e0a | Michael Hanselmann | |
649 | 85f03e0d | Michael Hanselmann | if job.CalcStatus() not in (constants.JOB_STATUS_QUEUED,): |
650 | 188c5e0a | Michael Hanselmann | logging.debug("Job %s is no longer in the queue", job.id)
|
651 | 188c5e0a | Michael Hanselmann | return
|
652 | 188c5e0a | Michael Hanselmann | |
653 | 85f03e0d | Michael Hanselmann | try:
|
654 | 85f03e0d | Michael Hanselmann | for op in job.ops: |
655 | 85f03e0d | Michael Hanselmann | op.status = constants.OP_STATUS_ERROR |
656 | 85f03e0d | Michael Hanselmann | op.result = "Job cancelled by request"
|
657 | 85f03e0d | Michael Hanselmann | finally:
|
658 | 85f03e0d | Michael Hanselmann | self.UpdateJobUnlocked(job)
|
659 | 188c5e0a | Michael Hanselmann | |
660 | c609f802 | Michael Hanselmann | @utils.LockedMethod
|
661 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
662 | f1da30e6 | Michael Hanselmann | def ArchiveJob(self, job_id): |
663 | c609f802 | Michael Hanselmann | """Archives a job.
|
664 | c609f802 | Michael Hanselmann |
|
665 | c609f802 | Michael Hanselmann | @type job_id: string
|
666 | c609f802 | Michael Hanselmann | @param job_id: Job ID of job to be archived.
|
667 | c609f802 | Michael Hanselmann |
|
668 | c609f802 | Michael Hanselmann | """
|
669 | c609f802 | Michael Hanselmann | logging.debug("Archiving job %s", job_id)
|
670 | c609f802 | Michael Hanselmann | |
671 | c609f802 | Michael Hanselmann | job = self._LoadJobUnlocked(job_id)
|
672 | c609f802 | Michael Hanselmann | if not job: |
673 | c609f802 | Michael Hanselmann | logging.debug("Job %s not found", job_id)
|
674 | c609f802 | Michael Hanselmann | return
|
675 | c609f802 | Michael Hanselmann | |
676 | 85f03e0d | Michael Hanselmann | if job.CalcStatus() not in (constants.JOB_STATUS_CANCELED, |
677 | 85f03e0d | Michael Hanselmann | constants.JOB_STATUS_SUCCESS, |
678 | 85f03e0d | Michael Hanselmann | constants.JOB_STATUS_ERROR): |
679 | 85f03e0d | Michael Hanselmann | logging.debug("Job %s is not yet done", job.id)
|
680 | c609f802 | Michael Hanselmann | return
|
681 | c609f802 | Michael Hanselmann | |
682 | c609f802 | Michael Hanselmann | try:
|
683 | c609f802 | Michael Hanselmann | old = self._GetJobPath(job.id)
|
684 | c609f802 | Michael Hanselmann | new = self._GetArchivedJobPath(job.id)
|
685 | c609f802 | Michael Hanselmann | |
686 | abc1f2ce | Michael Hanselmann | self._RenameFileUnlocked(old, new)
|
687 | c609f802 | Michael Hanselmann | |
688 | c609f802 | Michael Hanselmann | logging.debug("Successfully archived job %s", job.id)
|
689 | c609f802 | Michael Hanselmann | finally:
|
690 | c609f802 | Michael Hanselmann | # Cleaning the cache because we don't know what os.rename actually did
|
691 | c609f802 | Michael Hanselmann | # and to be on the safe side.
|
692 | c609f802 | Michael Hanselmann | self._CleanCacheUnlocked([])
|
693 | f1da30e6 | Michael Hanselmann | |
694 | 85f03e0d | Michael Hanselmann | def _GetJobInfoUnlocked(self, job, fields): |
695 | e2715f69 | Michael Hanselmann | row = [] |
696 | e2715f69 | Michael Hanselmann | for fname in fields: |
697 | e2715f69 | Michael Hanselmann | if fname == "id": |
698 | e2715f69 | Michael Hanselmann | row.append(job.id) |
699 | e2715f69 | Michael Hanselmann | elif fname == "status": |
700 | 85f03e0d | Michael Hanselmann | row.append(job.CalcStatus()) |
701 | af30b2fd | Michael Hanselmann | elif fname == "ops": |
702 | 85f03e0d | Michael Hanselmann | row.append([op.input.__getstate__() for op in job.ops]) |
703 | af30b2fd | Michael Hanselmann | elif fname == "opresult": |
704 | 85f03e0d | Michael Hanselmann | row.append([op.result for op in job.ops]) |
705 | af30b2fd | Michael Hanselmann | elif fname == "opstatus": |
706 | 85f03e0d | Michael Hanselmann | row.append([op.status for op in job.ops]) |
707 | e2715f69 | Michael Hanselmann | else:
|
708 | e2715f69 | Michael Hanselmann | raise errors.OpExecError("Invalid job query field '%s'" % fname) |
709 | e2715f69 | Michael Hanselmann | return row
|
710 | e2715f69 | Michael Hanselmann | |
711 | 85f03e0d | Michael Hanselmann | @utils.LockedMethod
|
712 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
713 | e2715f69 | Michael Hanselmann | def QueryJobs(self, job_ids, fields): |
714 | e2715f69 | Michael Hanselmann | """Returns a list of jobs in queue.
|
715 | e2715f69 | Michael Hanselmann |
|
716 | e2715f69 | Michael Hanselmann | Args:
|
717 | e2715f69 | Michael Hanselmann | - job_ids: Sequence of job identifiers or None for all
|
718 | e2715f69 | Michael Hanselmann | - fields: Names of fields to return
|
719 | e2715f69 | Michael Hanselmann |
|
720 | e2715f69 | Michael Hanselmann | """
|
721 | 85f03e0d | Michael Hanselmann | jobs = [] |
722 | e2715f69 | Michael Hanselmann | |
723 | 85f03e0d | Michael Hanselmann | for job in self._GetJobsUnlocked(job_ids): |
724 | 85f03e0d | Michael Hanselmann | if job is None: |
725 | 85f03e0d | Michael Hanselmann | jobs.append(None)
|
726 | 85f03e0d | Michael Hanselmann | else:
|
727 | 85f03e0d | Michael Hanselmann | jobs.append(self._GetJobInfoUnlocked(job, fields))
|
728 | e2715f69 | Michael Hanselmann | |
729 | 85f03e0d | Michael Hanselmann | return jobs
|
730 | e2715f69 | Michael Hanselmann | |
731 | f1da30e6 | Michael Hanselmann | @utils.LockedMethod
|
732 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
733 | e2715f69 | Michael Hanselmann | def Shutdown(self): |
734 | e2715f69 | Michael Hanselmann | """Stops the job queue.
|
735 | e2715f69 | Michael Hanselmann |
|
736 | e2715f69 | Michael Hanselmann | """
|
737 | e2715f69 | Michael Hanselmann | self._wpool.TerminateWorkers()
|
738 | 85f03e0d | Michael Hanselmann | |
739 | 04ab05ce | Michael Hanselmann | self._queue_lock.Close()
|
740 | 04ab05ce | Michael Hanselmann | self._queue_lock = None |