root / lib / jqueue.py @ ca0aa6d0
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2 | 498ae1cc | Iustin Pop | #
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3 | 498ae1cc | Iustin Pop | |
4 | 5685c1a5 | Michael Hanselmann | # Copyright (C) 2006, 2007, 2008 Google Inc.
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5 | 498ae1cc | Iustin Pop | #
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6 | 498ae1cc | Iustin Pop | # This program is free software; you can redistribute it and/or modify
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7 | 498ae1cc | Iustin Pop | # it under the terms of the GNU General Public License as published by
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8 | 498ae1cc | Iustin Pop | # the Free Software Foundation; either version 2 of the License, or
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9 | 498ae1cc | Iustin Pop | # (at your option) any later version.
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10 | 498ae1cc | Iustin Pop | #
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11 | 498ae1cc | Iustin Pop | # This program is distributed in the hope that it will be useful, but
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12 | 498ae1cc | Iustin Pop | # WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | 498ae1cc | Iustin Pop | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | 498ae1cc | Iustin Pop | # General Public License for more details.
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15 | 498ae1cc | Iustin Pop | #
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16 | 498ae1cc | Iustin Pop | # You should have received a copy of the GNU General Public License
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17 | 498ae1cc | Iustin Pop | # along with this program; if not, write to the Free Software
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18 | 498ae1cc | Iustin Pop | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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19 | 498ae1cc | Iustin Pop | # 02110-1301, USA.
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20 | 498ae1cc | Iustin Pop | |
21 | 498ae1cc | Iustin Pop | |
22 | 6c5a7090 | Michael Hanselmann | """Module implementing the job queue handling.
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23 | 6c5a7090 | Michael Hanselmann |
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24 | 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 | 5685c1a5 | Michael Hanselmann | import weakref |
37 | 498ae1cc | Iustin Pop | |
38 | e2715f69 | Michael Hanselmann | from ganeti import constants |
39 | f1da30e6 | Michael Hanselmann | from ganeti import serializer |
40 | e2715f69 | Michael Hanselmann | from ganeti import workerpool |
41 | f1da30e6 | Michael Hanselmann | from ganeti import opcodes |
42 | 7a1ecaed | Iustin Pop | from ganeti import errors |
43 | e2715f69 | Michael Hanselmann | from ganeti import mcpu |
44 | 7996a135 | Iustin Pop | from ganeti import utils |
45 | 04ab05ce | Michael Hanselmann | from ganeti import jstore |
46 | c3f0a12f | Iustin Pop | from ganeti import rpc |
47 | e2715f69 | Michael Hanselmann | |
48 | e2715f69 | Michael Hanselmann | |
49 | e2715f69 | Michael Hanselmann | JOBQUEUE_THREADS = 5
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50 | e2715f69 | Michael Hanselmann | |
51 | 498ae1cc | Iustin Pop | |
52 | 70552c46 | Michael Hanselmann | def TimeStampNow(): |
53 | 70552c46 | Michael Hanselmann | return utils.SplitTime(time.time())
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54 | 70552c46 | Michael Hanselmann | |
55 | 70552c46 | Michael Hanselmann | |
56 | e2715f69 | Michael Hanselmann | class _QueuedOpCode(object): |
57 | e2715f69 | Michael Hanselmann | """Encasulates an opcode object.
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58 | e2715f69 | Michael Hanselmann |
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59 | f1048938 | Iustin Pop | The 'log' attribute holds the execution log and consists of tuples
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60 | 6c5a7090 | Michael Hanselmann | of the form (log_serial, timestamp, level, message).
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61 | f1048938 | Iustin Pop |
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62 | e2715f69 | Michael Hanselmann | """
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63 | 85f03e0d | Michael Hanselmann | def __init__(self, op): |
64 | 85f03e0d | Michael Hanselmann | self.input = op
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65 | 85f03e0d | Michael Hanselmann | self.status = constants.OP_STATUS_QUEUED
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66 | 85f03e0d | Michael Hanselmann | self.result = None |
67 | 85f03e0d | Michael Hanselmann | self.log = []
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68 | 70552c46 | Michael Hanselmann | self.start_timestamp = None |
69 | 70552c46 | Michael Hanselmann | self.end_timestamp = None |
70 | f1da30e6 | Michael Hanselmann | |
71 | f1da30e6 | Michael Hanselmann | @classmethod
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72 | f1da30e6 | Michael Hanselmann | def Restore(cls, state): |
73 | 85f03e0d | Michael Hanselmann | obj = _QueuedOpCode.__new__(cls) |
74 | 85f03e0d | Michael Hanselmann | obj.input = opcodes.OpCode.LoadOpCode(state["input"])
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75 | 85f03e0d | Michael Hanselmann | obj.status = state["status"]
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76 | 85f03e0d | Michael Hanselmann | obj.result = state["result"]
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77 | 85f03e0d | Michael Hanselmann | obj.log = state["log"]
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78 | 70552c46 | Michael Hanselmann | obj.start_timestamp = state.get("start_timestamp", None) |
79 | 70552c46 | Michael Hanselmann | obj.end_timestamp = state.get("end_timestamp", None) |
80 | f1da30e6 | Michael Hanselmann | return obj
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81 | f1da30e6 | Michael Hanselmann | |
82 | f1da30e6 | Michael Hanselmann | def Serialize(self): |
83 | 6c5a7090 | Michael Hanselmann | return {
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84 | 6c5a7090 | Michael Hanselmann | "input": self.input.__getstate__(), |
85 | 6c5a7090 | Michael Hanselmann | "status": self.status, |
86 | 6c5a7090 | Michael Hanselmann | "result": self.result, |
87 | 6c5a7090 | Michael Hanselmann | "log": self.log, |
88 | 70552c46 | Michael Hanselmann | "start_timestamp": self.start_timestamp, |
89 | 70552c46 | Michael Hanselmann | "end_timestamp": self.end_timestamp, |
90 | 6c5a7090 | Michael Hanselmann | } |
91 | f1048938 | Iustin Pop | |
92 | e2715f69 | Michael Hanselmann | |
93 | e2715f69 | Michael Hanselmann | class _QueuedJob(object): |
94 | e2715f69 | Michael Hanselmann | """In-memory job representation.
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95 | e2715f69 | Michael Hanselmann |
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96 | 6c5a7090 | Michael Hanselmann | This is what we use to track the user-submitted jobs. Locking must be taken
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97 | 6c5a7090 | Michael Hanselmann | care of by users of this class.
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98 | e2715f69 | Michael Hanselmann |
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99 | e2715f69 | Michael Hanselmann | """
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100 | 85f03e0d | Michael Hanselmann | def __init__(self, queue, job_id, ops): |
101 | e2715f69 | Michael Hanselmann | if not ops: |
102 | e2715f69 | Michael Hanselmann | # TODO
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103 | e2715f69 | Michael Hanselmann | raise Exception("No opcodes") |
104 | e2715f69 | Michael Hanselmann | |
105 | 85f03e0d | Michael Hanselmann | self.queue = queue
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106 | f1da30e6 | Michael Hanselmann | self.id = job_id
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107 | 85f03e0d | Michael Hanselmann | self.ops = [_QueuedOpCode(op) for op in ops] |
108 | 85f03e0d | Michael Hanselmann | self.run_op_index = -1 |
109 | 6c5a7090 | Michael Hanselmann | self.log_serial = 0 |
110 | 6c5a7090 | Michael Hanselmann | |
111 | 6c5a7090 | Michael Hanselmann | # Condition to wait for changes
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112 | 6c5a7090 | Michael Hanselmann | self.change = threading.Condition(self.queue._lock) |
113 | f1da30e6 | Michael Hanselmann | |
114 | f1da30e6 | Michael Hanselmann | @classmethod
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115 | 85f03e0d | Michael Hanselmann | def Restore(cls, queue, state): |
116 | 85f03e0d | Michael Hanselmann | obj = _QueuedJob.__new__(cls) |
117 | 85f03e0d | Michael Hanselmann | obj.queue = queue |
118 | 85f03e0d | Michael Hanselmann | obj.id = state["id"]
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119 | 85f03e0d | Michael Hanselmann | obj.run_op_index = state["run_op_index"]
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120 | 6c5a7090 | Michael Hanselmann | |
121 | 6c5a7090 | Michael Hanselmann | obj.ops = [] |
122 | 6c5a7090 | Michael Hanselmann | obj.log_serial = 0
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123 | 6c5a7090 | Michael Hanselmann | for op_state in state["ops"]: |
124 | 6c5a7090 | Michael Hanselmann | op = _QueuedOpCode.Restore(op_state) |
125 | 6c5a7090 | Michael Hanselmann | for log_entry in op.log: |
126 | 6c5a7090 | Michael Hanselmann | obj.log_serial = max(obj.log_serial, log_entry[0]) |
127 | 6c5a7090 | Michael Hanselmann | obj.ops.append(op) |
128 | 6c5a7090 | Michael Hanselmann | |
129 | 6c5a7090 | Michael Hanselmann | # Condition to wait for changes
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130 | 6c5a7090 | Michael Hanselmann | obj.change = threading.Condition(obj.queue._lock) |
131 | 6c5a7090 | Michael Hanselmann | |
132 | f1da30e6 | Michael Hanselmann | return obj
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133 | f1da30e6 | Michael Hanselmann | |
134 | f1da30e6 | Michael Hanselmann | def Serialize(self): |
135 | f1da30e6 | Michael Hanselmann | return {
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136 | f1da30e6 | Michael Hanselmann | "id": self.id, |
137 | 85f03e0d | Michael Hanselmann | "ops": [op.Serialize() for op in self.ops], |
138 | f1048938 | Iustin Pop | "run_op_index": self.run_op_index, |
139 | f1da30e6 | Michael Hanselmann | } |
140 | f1da30e6 | Michael Hanselmann | |
141 | 85f03e0d | Michael Hanselmann | def CalcStatus(self): |
142 | e2715f69 | Michael Hanselmann | status = constants.JOB_STATUS_QUEUED |
143 | e2715f69 | Michael Hanselmann | |
144 | e2715f69 | Michael Hanselmann | all_success = True
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145 | 85f03e0d | Michael Hanselmann | for op in self.ops: |
146 | 85f03e0d | Michael Hanselmann | if op.status == constants.OP_STATUS_SUCCESS:
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147 | e2715f69 | Michael Hanselmann | continue
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148 | e2715f69 | Michael Hanselmann | |
149 | e2715f69 | Michael Hanselmann | all_success = False
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150 | e2715f69 | Michael Hanselmann | |
151 | 85f03e0d | Michael Hanselmann | if op.status == constants.OP_STATUS_QUEUED:
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152 | e2715f69 | Michael Hanselmann | pass
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153 | 85f03e0d | Michael Hanselmann | elif op.status == constants.OP_STATUS_RUNNING:
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154 | e2715f69 | Michael Hanselmann | status = constants.JOB_STATUS_RUNNING |
155 | 85f03e0d | Michael Hanselmann | elif op.status == constants.OP_STATUS_ERROR:
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156 | f1da30e6 | Michael Hanselmann | status = constants.JOB_STATUS_ERROR |
157 | f1da30e6 | Michael Hanselmann | # The whole job fails if one opcode failed
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158 | f1da30e6 | Michael Hanselmann | break
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159 | 85f03e0d | Michael Hanselmann | elif op.status == constants.OP_STATUS_CANCELED:
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160 | 4cb1d919 | Michael Hanselmann | status = constants.OP_STATUS_CANCELED |
161 | 4cb1d919 | Michael Hanselmann | break
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162 | e2715f69 | Michael Hanselmann | |
163 | e2715f69 | Michael Hanselmann | if all_success:
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164 | e2715f69 | Michael Hanselmann | status = constants.JOB_STATUS_SUCCESS |
165 | e2715f69 | Michael Hanselmann | |
166 | e2715f69 | Michael Hanselmann | return status
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167 | e2715f69 | Michael Hanselmann | |
168 | 6c5a7090 | Michael Hanselmann | def GetLogEntries(self, newer_than): |
169 | 6c5a7090 | Michael Hanselmann | if newer_than is None: |
170 | 6c5a7090 | Michael Hanselmann | serial = -1
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171 | 6c5a7090 | Michael Hanselmann | else:
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172 | 6c5a7090 | Michael Hanselmann | serial = newer_than |
173 | 6c5a7090 | Michael Hanselmann | |
174 | 6c5a7090 | Michael Hanselmann | entries = [] |
175 | 6c5a7090 | Michael Hanselmann | for op in self.ops: |
176 | 6c5a7090 | Michael Hanselmann | entries.extend(filter(lambda entry: entry[0] > newer_than, op.log)) |
177 | 6c5a7090 | Michael Hanselmann | |
178 | 6c5a7090 | Michael Hanselmann | return entries
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179 | 6c5a7090 | Michael Hanselmann | |
180 | f1048938 | Iustin Pop | |
181 | 85f03e0d | Michael Hanselmann | class _JobQueueWorker(workerpool.BaseWorker): |
182 | 85f03e0d | Michael Hanselmann | def RunTask(self, job): |
183 | e2715f69 | Michael Hanselmann | """Job executor.
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184 | e2715f69 | Michael Hanselmann |
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185 | 6c5a7090 | Michael Hanselmann | This functions processes a job. It is closely tied to the _QueuedJob and
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186 | 6c5a7090 | Michael Hanselmann | _QueuedOpCode classes.
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187 | e2715f69 | Michael Hanselmann |
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188 | e2715f69 | Michael Hanselmann | """
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189 | e2715f69 | Michael Hanselmann | logging.debug("Worker %s processing job %s",
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190 | e2715f69 | Michael Hanselmann | self.worker_id, job.id)
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191 | 5bdce580 | Michael Hanselmann | proc = mcpu.Processor(self.pool.queue.context)
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192 | 85f03e0d | Michael Hanselmann | queue = job.queue |
193 | e2715f69 | Michael Hanselmann | try:
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194 | 85f03e0d | Michael Hanselmann | try:
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195 | 85f03e0d | Michael Hanselmann | count = len(job.ops)
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196 | 85f03e0d | Michael Hanselmann | for idx, op in enumerate(job.ops): |
197 | 85f03e0d | Michael Hanselmann | try:
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198 | 85f03e0d | Michael Hanselmann | logging.debug("Op %s/%s: Starting %s", idx + 1, count, op) |
199 | 85f03e0d | Michael Hanselmann | |
200 | 85f03e0d | Michael Hanselmann | queue.acquire() |
201 | 85f03e0d | Michael Hanselmann | try:
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202 | 85f03e0d | Michael Hanselmann | job.run_op_index = idx |
203 | 85f03e0d | Michael Hanselmann | op.status = constants.OP_STATUS_RUNNING |
204 | 85f03e0d | Michael Hanselmann | op.result = None
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205 | 70552c46 | Michael Hanselmann | op.start_timestamp = TimeStampNow() |
206 | 85f03e0d | Michael Hanselmann | queue.UpdateJobUnlocked(job) |
207 | 85f03e0d | Michael Hanselmann | |
208 | 38206f3c | Iustin Pop | input_opcode = op.input |
209 | 85f03e0d | Michael Hanselmann | finally:
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210 | 85f03e0d | Michael Hanselmann | queue.release() |
211 | 85f03e0d | Michael Hanselmann | |
212 | dfe57c22 | Michael Hanselmann | def _Log(*args): |
213 | 6c5a7090 | Michael Hanselmann | """Append a log entry.
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214 | 6c5a7090 | Michael Hanselmann |
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215 | 6c5a7090 | Michael Hanselmann | """
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216 | 6c5a7090 | Michael Hanselmann | assert len(args) < 3 |
217 | 6c5a7090 | Michael Hanselmann | |
218 | 6c5a7090 | Michael Hanselmann | if len(args) == 1: |
219 | 6c5a7090 | Michael Hanselmann | log_type = constants.ELOG_MESSAGE |
220 | 6c5a7090 | Michael Hanselmann | log_msg = args[0]
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221 | 6c5a7090 | Michael Hanselmann | else:
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222 | 6c5a7090 | Michael Hanselmann | log_type, log_msg = args |
223 | 6c5a7090 | Michael Hanselmann | |
224 | 6c5a7090 | Michael Hanselmann | # The time is split to make serialization easier and not lose
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225 | 6c5a7090 | Michael Hanselmann | # precision.
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226 | 6c5a7090 | Michael Hanselmann | timestamp = utils.SplitTime(time.time()) |
227 | dfe57c22 | Michael Hanselmann | |
228 | 6c5a7090 | Michael Hanselmann | queue.acquire() |
229 | dfe57c22 | Michael Hanselmann | try:
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230 | 6c5a7090 | Michael Hanselmann | job.log_serial += 1
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231 | 6c5a7090 | Michael Hanselmann | op.log.append((job.log_serial, timestamp, log_type, log_msg)) |
232 | 6c5a7090 | Michael Hanselmann | |
233 | dfe57c22 | Michael Hanselmann | job.change.notifyAll() |
234 | dfe57c22 | Michael Hanselmann | finally:
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235 | 6c5a7090 | Michael Hanselmann | queue.release() |
236 | dfe57c22 | Michael Hanselmann | |
237 | 6c5a7090 | Michael Hanselmann | # Make sure not to hold lock while _Log is called
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238 | dfe57c22 | Michael Hanselmann | result = proc.ExecOpCode(input_opcode, _Log) |
239 | 85f03e0d | Michael Hanselmann | |
240 | 85f03e0d | Michael Hanselmann | queue.acquire() |
241 | 85f03e0d | Michael Hanselmann | try:
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242 | 85f03e0d | Michael Hanselmann | op.status = constants.OP_STATUS_SUCCESS |
243 | 85f03e0d | Michael Hanselmann | op.result = result |
244 | 70552c46 | Michael Hanselmann | op.end_timestamp = TimeStampNow() |
245 | 85f03e0d | Michael Hanselmann | queue.UpdateJobUnlocked(job) |
246 | 85f03e0d | Michael Hanselmann | finally:
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247 | 85f03e0d | Michael Hanselmann | queue.release() |
248 | 85f03e0d | Michael Hanselmann | |
249 | 85f03e0d | Michael Hanselmann | logging.debug("Op %s/%s: Successfully finished %s",
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250 | 85f03e0d | Michael Hanselmann | idx + 1, count, op)
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251 | 85f03e0d | Michael Hanselmann | except Exception, err: |
252 | 85f03e0d | Michael Hanselmann | queue.acquire() |
253 | 85f03e0d | Michael Hanselmann | try:
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254 | 85f03e0d | Michael Hanselmann | try:
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255 | 85f03e0d | Michael Hanselmann | op.status = constants.OP_STATUS_ERROR |
256 | 85f03e0d | Michael Hanselmann | op.result = str(err)
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257 | 70552c46 | Michael Hanselmann | op.end_timestamp = TimeStampNow() |
258 | 85f03e0d | Michael Hanselmann | logging.debug("Op %s/%s: Error in %s", idx + 1, count, op) |
259 | 85f03e0d | Michael Hanselmann | finally:
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260 | 85f03e0d | Michael Hanselmann | queue.UpdateJobUnlocked(job) |
261 | 85f03e0d | Michael Hanselmann | finally:
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262 | 85f03e0d | Michael Hanselmann | queue.release() |
263 | 85f03e0d | Michael Hanselmann | raise
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264 | 85f03e0d | Michael Hanselmann | |
265 | 85f03e0d | Michael Hanselmann | except errors.GenericError, err:
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266 | 85f03e0d | Michael Hanselmann | logging.exception("Ganeti exception")
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267 | 85f03e0d | Michael Hanselmann | except:
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268 | 85f03e0d | Michael Hanselmann | logging.exception("Unhandled exception")
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269 | e2715f69 | Michael Hanselmann | finally:
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270 | 85f03e0d | Michael Hanselmann | queue.acquire() |
271 | 85f03e0d | Michael Hanselmann | try:
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272 | 65548ed5 | Michael Hanselmann | try:
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273 | 65548ed5 | Michael Hanselmann | job.run_op_idx = -1
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274 | 65548ed5 | Michael Hanselmann | queue.UpdateJobUnlocked(job) |
275 | 65548ed5 | Michael Hanselmann | finally:
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276 | 65548ed5 | Michael Hanselmann | job_id = job.id |
277 | 65548ed5 | Michael Hanselmann | status = job.CalcStatus() |
278 | 85f03e0d | Michael Hanselmann | finally:
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279 | 85f03e0d | Michael Hanselmann | queue.release() |
280 | e2715f69 | Michael Hanselmann | logging.debug("Worker %s finished job %s, status = %s",
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281 | 85f03e0d | Michael Hanselmann | self.worker_id, job_id, status)
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282 | e2715f69 | Michael Hanselmann | |
283 | e2715f69 | Michael Hanselmann | |
284 | e2715f69 | Michael Hanselmann | class _JobQueueWorkerPool(workerpool.WorkerPool): |
285 | 5bdce580 | Michael Hanselmann | def __init__(self, queue): |
286 | e2715f69 | Michael Hanselmann | super(_JobQueueWorkerPool, self).__init__(JOBQUEUE_THREADS, |
287 | e2715f69 | Michael Hanselmann | _JobQueueWorker) |
288 | 5bdce580 | Michael Hanselmann | self.queue = queue
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289 | e2715f69 | Michael Hanselmann | |
290 | e2715f69 | Michael Hanselmann | |
291 | 85f03e0d | Michael Hanselmann | class JobQueue(object): |
292 | bac5ffc3 | Oleksiy Mishchenko | _RE_JOB_FILE = re.compile(r"^job-(%s)$" % constants.JOB_ID_TEMPLATE)
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293 | f1da30e6 | Michael Hanselmann | |
294 | db37da70 | Michael Hanselmann | def _RequireOpenQueue(fn): |
295 | db37da70 | Michael Hanselmann | """Decorator for "public" functions.
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296 | db37da70 | Michael Hanselmann |
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297 | db37da70 | Michael Hanselmann | This function should be used for all "public" functions. That is, functions
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298 | db37da70 | Michael Hanselmann | usually called from other classes.
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299 | db37da70 | Michael Hanselmann |
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300 | db37da70 | Michael Hanselmann | Important: Use this decorator only after utils.LockedMethod!
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301 | db37da70 | Michael Hanselmann |
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302 | db37da70 | Michael Hanselmann | Example:
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303 | db37da70 | Michael Hanselmann | @utils.LockedMethod
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304 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
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305 | db37da70 | Michael Hanselmann | def Example(self):
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306 | db37da70 | Michael Hanselmann | pass
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307 | db37da70 | Michael Hanselmann |
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308 | db37da70 | Michael Hanselmann | """
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309 | db37da70 | Michael Hanselmann | def wrapper(self, *args, **kwargs): |
310 | 04ab05ce | Michael Hanselmann | assert self._queue_lock is not None, "Queue should be open" |
311 | db37da70 | Michael Hanselmann | return fn(self, *args, **kwargs) |
312 | db37da70 | Michael Hanselmann | return wrapper
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313 | db37da70 | Michael Hanselmann | |
314 | 85f03e0d | Michael Hanselmann | def __init__(self, context): |
315 | 5bdce580 | Michael Hanselmann | self.context = context
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316 | 5685c1a5 | Michael Hanselmann | self._memcache = weakref.WeakValueDictionary()
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317 | c3f0a12f | Iustin Pop | self._my_hostname = utils.HostInfo().name
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318 | f1da30e6 | Michael Hanselmann | |
319 | 85f03e0d | Michael Hanselmann | # Locking
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320 | 85f03e0d | Michael Hanselmann | self._lock = threading.Lock()
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321 | 85f03e0d | Michael Hanselmann | self.acquire = self._lock.acquire |
322 | 85f03e0d | Michael Hanselmann | self.release = self._lock.release |
323 | 85f03e0d | Michael Hanselmann | |
324 | 04ab05ce | Michael Hanselmann | # Initialize
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325 | 5d6fb8eb | Michael Hanselmann | self._queue_lock = jstore.InitAndVerifyQueue(must_lock=True) |
326 | f1da30e6 | Michael Hanselmann | |
327 | 04ab05ce | Michael Hanselmann | # Read serial file
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328 | 04ab05ce | Michael Hanselmann | self._last_serial = jstore.ReadSerial()
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329 | 04ab05ce | Michael Hanselmann | assert self._last_serial is not None, ("Serial file was modified between" |
330 | 04ab05ce | Michael Hanselmann | " check in jstore and here")
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331 | c4beba1c | Iustin Pop | |
332 | 23752136 | Michael Hanselmann | # Get initial list of nodes
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333 | 8e00939c | Michael Hanselmann | self._nodes = set(self.context.cfg.GetNodeList()) |
334 | 8e00939c | Michael Hanselmann | |
335 | 8e00939c | Michael Hanselmann | # Remove master node
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336 | 8e00939c | Michael Hanselmann | try:
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337 | 8e00939c | Michael Hanselmann | self._nodes.remove(self._my_hostname) |
338 | 8e00939c | Michael Hanselmann | except ValueError: |
339 | 8e00939c | Michael Hanselmann | pass
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340 | 23752136 | Michael Hanselmann | |
341 | 23752136 | Michael Hanselmann | # TODO: Check consistency across nodes
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342 | 23752136 | Michael Hanselmann | |
343 | 85f03e0d | Michael Hanselmann | # Setup worker pool
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344 | 5bdce580 | Michael Hanselmann | self._wpool = _JobQueueWorkerPool(self) |
345 | 85f03e0d | Michael Hanselmann | |
346 | 85f03e0d | Michael Hanselmann | # We need to lock here because WorkerPool.AddTask() may start a job while
|
347 | 85f03e0d | Michael Hanselmann | # we're still doing our work.
|
348 | 85f03e0d | Michael Hanselmann | self.acquire()
|
349 | 85f03e0d | Michael Hanselmann | try:
|
350 | 85f03e0d | Michael Hanselmann | for job in self._GetJobsUnlocked(None): |
351 | 85f03e0d | Michael Hanselmann | status = job.CalcStatus() |
352 | 85f03e0d | Michael Hanselmann | |
353 | 85f03e0d | Michael Hanselmann | if status in (constants.JOB_STATUS_QUEUED, ): |
354 | 85f03e0d | Michael Hanselmann | self._wpool.AddTask(job)
|
355 | 85f03e0d | Michael Hanselmann | |
356 | 85f03e0d | Michael Hanselmann | elif status in (constants.JOB_STATUS_RUNNING, ): |
357 | 85f03e0d | Michael Hanselmann | logging.warning("Unfinished job %s found: %s", job.id, job)
|
358 | 85f03e0d | Michael Hanselmann | try:
|
359 | 85f03e0d | Michael Hanselmann | for op in job.ops: |
360 | 85f03e0d | Michael Hanselmann | op.status = constants.OP_STATUS_ERROR |
361 | 85f03e0d | Michael Hanselmann | op.result = "Unclean master daemon shutdown"
|
362 | 85f03e0d | Michael Hanselmann | finally:
|
363 | 85f03e0d | Michael Hanselmann | self.UpdateJobUnlocked(job)
|
364 | 85f03e0d | Michael Hanselmann | finally:
|
365 | 85f03e0d | Michael Hanselmann | self.release()
|
366 | 85f03e0d | Michael Hanselmann | |
367 | d2e03a33 | Michael Hanselmann | @utils.LockedMethod
|
368 | d2e03a33 | Michael Hanselmann | @_RequireOpenQueue
|
369 | d2e03a33 | Michael Hanselmann | def AddNode(self, node_name): |
370 | d2e03a33 | Michael Hanselmann | assert node_name != self._my_hostname |
371 | 23752136 | Michael Hanselmann | |
372 | 9f774ee8 | Michael Hanselmann | # Clean queue directory on added node
|
373 | 9f774ee8 | Michael Hanselmann | rpc.call_jobqueue_purge(node_name) |
374 | 23752136 | Michael Hanselmann | |
375 | d2e03a33 | Michael Hanselmann | # Upload the whole queue excluding archived jobs
|
376 | d2e03a33 | Michael Hanselmann | files = [self._GetJobPath(job_id) for job_id in self._GetJobIDsUnlocked()] |
377 | 23752136 | Michael Hanselmann | |
378 | d2e03a33 | Michael Hanselmann | # Upload current serial file
|
379 | d2e03a33 | Michael Hanselmann | files.append(constants.JOB_QUEUE_SERIAL_FILE) |
380 | d2e03a33 | Michael Hanselmann | |
381 | d2e03a33 | Michael Hanselmann | for file_name in files: |
382 | 9f774ee8 | Michael Hanselmann | # Read file content
|
383 | 9f774ee8 | Michael Hanselmann | fd = open(file_name, "r") |
384 | 9f774ee8 | Michael Hanselmann | try:
|
385 | 9f774ee8 | Michael Hanselmann | content = fd.read() |
386 | 9f774ee8 | Michael Hanselmann | finally:
|
387 | 9f774ee8 | Michael Hanselmann | fd.close() |
388 | 9f774ee8 | Michael Hanselmann | |
389 | 9f774ee8 | Michael Hanselmann | result = rpc.call_jobqueue_update([node_name], file_name, content) |
390 | d2e03a33 | Michael Hanselmann | if not result[node_name]: |
391 | d2e03a33 | Michael Hanselmann | logging.error("Failed to upload %s to %s", file_name, node_name)
|
392 | d2e03a33 | Michael Hanselmann | |
393 | d2e03a33 | Michael Hanselmann | self._nodes.add(node_name)
|
394 | d2e03a33 | Michael Hanselmann | |
395 | d2e03a33 | Michael Hanselmann | @utils.LockedMethod
|
396 | d2e03a33 | Michael Hanselmann | @_RequireOpenQueue
|
397 | d2e03a33 | Michael Hanselmann | def RemoveNode(self, node_name): |
398 | 23752136 | Michael Hanselmann | try:
|
399 | d2e03a33 | Michael Hanselmann | # The queue is removed by the "leave node" RPC call.
|
400 | d2e03a33 | Michael Hanselmann | self._nodes.remove(node_name)
|
401 | d2e03a33 | Michael Hanselmann | except KeyError: |
402 | 23752136 | Michael Hanselmann | pass
|
403 | 23752136 | Michael Hanselmann | |
404 | e74798c1 | Michael Hanselmann | def _CheckRpcResult(self, result, nodes, failmsg): |
405 | e74798c1 | Michael Hanselmann | failed = [] |
406 | e74798c1 | Michael Hanselmann | success = [] |
407 | e74798c1 | Michael Hanselmann | |
408 | e74798c1 | Michael Hanselmann | for node in nodes: |
409 | e74798c1 | Michael Hanselmann | if result[node]:
|
410 | e74798c1 | Michael Hanselmann | success.append(node) |
411 | e74798c1 | Michael Hanselmann | else:
|
412 | e74798c1 | Michael Hanselmann | failed.append(node) |
413 | e74798c1 | Michael Hanselmann | |
414 | e74798c1 | Michael Hanselmann | if failed:
|
415 | e74798c1 | Michael Hanselmann | logging.error("%s failed on %s", failmsg, ", ".join(failed)) |
416 | e74798c1 | Michael Hanselmann | |
417 | e74798c1 | Michael Hanselmann | # +1 for the master node
|
418 | e74798c1 | Michael Hanselmann | if (len(success) + 1) < len(failed): |
419 | e74798c1 | Michael Hanselmann | # TODO: Handle failing nodes
|
420 | e74798c1 | Michael Hanselmann | logging.error("More than half of the nodes failed")
|
421 | e74798c1 | Michael Hanselmann | |
422 | 8e00939c | Michael Hanselmann | def _WriteAndReplicateFileUnlocked(self, file_name, data): |
423 | 8e00939c | Michael Hanselmann | """Writes a file locally and then replicates it to all nodes.
|
424 | 8e00939c | Michael Hanselmann |
|
425 | 8e00939c | Michael Hanselmann | """
|
426 | 8e00939c | Michael Hanselmann | utils.WriteFile(file_name, data=data) |
427 | 8e00939c | Michael Hanselmann | |
428 | 9f774ee8 | Michael Hanselmann | result = rpc.call_jobqueue_update(self._nodes, file_name, data)
|
429 | e74798c1 | Michael Hanselmann | self._CheckRpcResult(result, self._nodes, |
430 | e74798c1 | Michael Hanselmann | "Updating %s" % file_name)
|
431 | 23752136 | Michael Hanselmann | |
432 | abc1f2ce | Michael Hanselmann | def _RenameFileUnlocked(self, old, new): |
433 | abc1f2ce | Michael Hanselmann | os.rename(old, new) |
434 | abc1f2ce | Michael Hanselmann | |
435 | abc1f2ce | Michael Hanselmann | result = rpc.call_jobqueue_rename(self._nodes, old, new)
|
436 | e74798c1 | Michael Hanselmann | self._CheckRpcResult(result, self._nodes, |
437 | e74798c1 | Michael Hanselmann | "Moving %s to %s" % (old, new))
|
438 | abc1f2ce | Michael Hanselmann | |
439 | 85f03e0d | Michael Hanselmann | def _FormatJobID(self, job_id): |
440 | 85f03e0d | Michael Hanselmann | if not isinstance(job_id, (int, long)): |
441 | 85f03e0d | Michael Hanselmann | raise errors.ProgrammerError("Job ID '%s' not numeric" % job_id) |
442 | 85f03e0d | Michael Hanselmann | if job_id < 0: |
443 | 85f03e0d | Michael Hanselmann | raise errors.ProgrammerError("Job ID %s is negative" % job_id) |
444 | 85f03e0d | Michael Hanselmann | |
445 | 85f03e0d | Michael Hanselmann | return str(job_id) |
446 | 85f03e0d | Michael Hanselmann | |
447 | 4c848b18 | Michael Hanselmann | def _NewSerialUnlocked(self): |
448 | f1da30e6 | Michael Hanselmann | """Generates a new job identifier.
|
449 | f1da30e6 | Michael Hanselmann |
|
450 | f1da30e6 | Michael Hanselmann | Job identifiers are unique during the lifetime of a cluster.
|
451 | f1da30e6 | Michael Hanselmann |
|
452 | f1da30e6 | Michael Hanselmann | Returns: A string representing the job identifier.
|
453 | f1da30e6 | Michael Hanselmann |
|
454 | f1da30e6 | Michael Hanselmann | """
|
455 | f1da30e6 | Michael Hanselmann | # New number
|
456 | f1da30e6 | Michael Hanselmann | serial = self._last_serial + 1 |
457 | f1da30e6 | Michael Hanselmann | |
458 | f1da30e6 | Michael Hanselmann | # Write to file
|
459 | 23752136 | Michael Hanselmann | self._WriteAndReplicateFileUnlocked(constants.JOB_QUEUE_SERIAL_FILE,
|
460 | 23752136 | Michael Hanselmann | "%s\n" % serial)
|
461 | f1da30e6 | Michael Hanselmann | |
462 | f1da30e6 | Michael Hanselmann | # Keep it only if we were able to write the file
|
463 | f1da30e6 | Michael Hanselmann | self._last_serial = serial
|
464 | f1da30e6 | Michael Hanselmann | |
465 | 85f03e0d | Michael Hanselmann | return self._FormatJobID(serial) |
466 | f1da30e6 | Michael Hanselmann | |
467 | 85f03e0d | Michael Hanselmann | @staticmethod
|
468 | 85f03e0d | Michael Hanselmann | def _GetJobPath(job_id): |
469 | f1da30e6 | Michael Hanselmann | return os.path.join(constants.QUEUE_DIR, "job-%s" % job_id) |
470 | f1da30e6 | Michael Hanselmann | |
471 | 85f03e0d | Michael Hanselmann | @staticmethod
|
472 | 85f03e0d | Michael Hanselmann | def _GetArchivedJobPath(job_id): |
473 | 0cb94105 | Michael Hanselmann | return os.path.join(constants.JOB_QUEUE_ARCHIVE_DIR, "job-%s" % job_id) |
474 | 0cb94105 | Michael Hanselmann | |
475 | 85f03e0d | Michael Hanselmann | @classmethod
|
476 | 85f03e0d | Michael Hanselmann | def _ExtractJobID(cls, name): |
477 | 85f03e0d | Michael Hanselmann | m = cls._RE_JOB_FILE.match(name) |
478 | fae737ac | Michael Hanselmann | if m:
|
479 | fae737ac | Michael Hanselmann | return m.group(1) |
480 | fae737ac | Michael Hanselmann | else:
|
481 | fae737ac | Michael Hanselmann | return None |
482 | fae737ac | Michael Hanselmann | |
483 | 911a495b | Iustin Pop | def _GetJobIDsUnlocked(self, archived=False): |
484 | 911a495b | Iustin Pop | """Return all known job IDs.
|
485 | 911a495b | Iustin Pop |
|
486 | 911a495b | Iustin Pop | If the parameter archived is True, archived jobs IDs will be
|
487 | 911a495b | Iustin Pop | included. Currently this argument is unused.
|
488 | 911a495b | Iustin Pop |
|
489 | ac0930b9 | Iustin Pop | The method only looks at disk because it's a requirement that all
|
490 | ac0930b9 | Iustin Pop | jobs are present on disk (so in the _memcache we don't have any
|
491 | ac0930b9 | Iustin Pop | extra IDs).
|
492 | ac0930b9 | Iustin Pop |
|
493 | 911a495b | Iustin Pop | """
|
494 | fae737ac | Michael Hanselmann | jlist = [self._ExtractJobID(name) for name in self._ListJobFiles()] |
495 | f0d874fe | Iustin Pop | jlist.sort() |
496 | f0d874fe | Iustin Pop | return jlist
|
497 | 911a495b | Iustin Pop | |
498 | f1da30e6 | Michael Hanselmann | def _ListJobFiles(self): |
499 | f1da30e6 | Michael Hanselmann | return [name for name in utils.ListVisibleFiles(constants.QUEUE_DIR) |
500 | f1da30e6 | Michael Hanselmann | if self._RE_JOB_FILE.match(name)] |
501 | f1da30e6 | Michael Hanselmann | |
502 | 911a495b | Iustin Pop | def _LoadJobUnlocked(self, job_id): |
503 | 5685c1a5 | Michael Hanselmann | job = self._memcache.get(job_id, None) |
504 | 5685c1a5 | Michael Hanselmann | if job:
|
505 | 205d71fd | Michael Hanselmann | logging.debug("Found job %s in memcache", job_id)
|
506 | 5685c1a5 | Michael Hanselmann | return job
|
507 | ac0930b9 | Iustin Pop | |
508 | 911a495b | Iustin Pop | filepath = self._GetJobPath(job_id)
|
509 | f1da30e6 | Michael Hanselmann | logging.debug("Loading job from %s", filepath)
|
510 | f1da30e6 | Michael Hanselmann | try:
|
511 | f1da30e6 | Michael Hanselmann | fd = open(filepath, "r") |
512 | f1da30e6 | Michael Hanselmann | except IOError, err: |
513 | f1da30e6 | Michael Hanselmann | if err.errno in (errno.ENOENT, ): |
514 | f1da30e6 | Michael Hanselmann | return None |
515 | f1da30e6 | Michael Hanselmann | raise
|
516 | f1da30e6 | Michael Hanselmann | try:
|
517 | f1da30e6 | Michael Hanselmann | data = serializer.LoadJson(fd.read()) |
518 | f1da30e6 | Michael Hanselmann | finally:
|
519 | f1da30e6 | Michael Hanselmann | fd.close() |
520 | f1da30e6 | Michael Hanselmann | |
521 | ac0930b9 | Iustin Pop | job = _QueuedJob.Restore(self, data)
|
522 | ac0930b9 | Iustin Pop | self._memcache[job_id] = job
|
523 | 205d71fd | Michael Hanselmann | logging.debug("Added job %s to the cache", job_id)
|
524 | ac0930b9 | Iustin Pop | return job
|
525 | f1da30e6 | Michael Hanselmann | |
526 | f1da30e6 | Michael Hanselmann | def _GetJobsUnlocked(self, job_ids): |
527 | 911a495b | Iustin Pop | if not job_ids: |
528 | 911a495b | Iustin Pop | job_ids = self._GetJobIDsUnlocked()
|
529 | f1da30e6 | Michael Hanselmann | |
530 | 911a495b | Iustin Pop | return [self._LoadJobUnlocked(job_id) for job_id in job_ids] |
531 | f1da30e6 | Michael Hanselmann | |
532 | f1da30e6 | Michael Hanselmann | @utils.LockedMethod
|
533 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
534 | 4c848b18 | Michael Hanselmann | def SubmitJob(self, ops): |
535 | 85f03e0d | Michael Hanselmann | """Create and store a new job.
|
536 | f1da30e6 | Michael Hanselmann |
|
537 | 85f03e0d | Michael Hanselmann | This enters the job into our job queue and also puts it on the new
|
538 | 85f03e0d | Michael Hanselmann | queue, in order for it to be picked up by the queue processors.
|
539 | c3f0a12f | Iustin Pop |
|
540 | c3f0a12f | Iustin Pop | @type ops: list
|
541 | 205d71fd | Michael Hanselmann | @param ops: The list of OpCodes that will become the new job.
|
542 | c3f0a12f | Iustin Pop |
|
543 | c3f0a12f | Iustin Pop | """
|
544 | f1da30e6 | Michael Hanselmann | # Get job identifier
|
545 | 4c848b18 | Michael Hanselmann | job_id = self._NewSerialUnlocked()
|
546 | f1da30e6 | Michael Hanselmann | job = _QueuedJob(self, job_id, ops)
|
547 | f1da30e6 | Michael Hanselmann | |
548 | f1da30e6 | Michael Hanselmann | # Write to disk
|
549 | 85f03e0d | Michael Hanselmann | self.UpdateJobUnlocked(job)
|
550 | f1da30e6 | Michael Hanselmann | |
551 | 5685c1a5 | Michael Hanselmann | logging.debug("Adding new job %s to the cache", job_id)
|
552 | ac0930b9 | Iustin Pop | self._memcache[job_id] = job
|
553 | ac0930b9 | Iustin Pop | |
554 | 85f03e0d | Michael Hanselmann | # Add to worker pool
|
555 | 85f03e0d | Michael Hanselmann | self._wpool.AddTask(job)
|
556 | 85f03e0d | Michael Hanselmann | |
557 | 85f03e0d | Michael Hanselmann | return job.id
|
558 | f1da30e6 | Michael Hanselmann | |
559 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
560 | 85f03e0d | Michael Hanselmann | def UpdateJobUnlocked(self, job): |
561 | f1da30e6 | Michael Hanselmann | filename = self._GetJobPath(job.id)
|
562 | 23752136 | Michael Hanselmann | data = serializer.DumpJson(job.Serialize(), indent=False)
|
563 | f1da30e6 | Michael Hanselmann | logging.debug("Writing job %s to %s", job.id, filename)
|
564 | 23752136 | Michael Hanselmann | self._WriteAndReplicateFileUnlocked(filename, data)
|
565 | ac0930b9 | Iustin Pop | |
566 | dfe57c22 | Michael Hanselmann | # Notify waiters about potential changes
|
567 | 6c5a7090 | Michael Hanselmann | job.change.notifyAll() |
568 | dfe57c22 | Michael Hanselmann | |
569 | 6c5a7090 | Michael Hanselmann | @utils.LockedMethod
|
570 | dfe57c22 | Michael Hanselmann | @_RequireOpenQueue
|
571 | 5c735209 | Iustin Pop | def WaitForJobChanges(self, job_id, fields, prev_job_info, prev_log_serial, |
572 | 5c735209 | Iustin Pop | timeout): |
573 | 6c5a7090 | Michael Hanselmann | """Waits for changes in a job.
|
574 | 6c5a7090 | Michael Hanselmann |
|
575 | 6c5a7090 | Michael Hanselmann | @type job_id: string
|
576 | 6c5a7090 | Michael Hanselmann | @param job_id: Job identifier
|
577 | 6c5a7090 | Michael Hanselmann | @type fields: list of strings
|
578 | 6c5a7090 | Michael Hanselmann | @param fields: Which fields to check for changes
|
579 | 6c5a7090 | Michael Hanselmann | @type prev_job_info: list or None
|
580 | 6c5a7090 | Michael Hanselmann | @param prev_job_info: Last job information returned
|
581 | 6c5a7090 | Michael Hanselmann | @type prev_log_serial: int
|
582 | 6c5a7090 | Michael Hanselmann | @param prev_log_serial: Last job message serial number
|
583 | 5c735209 | Iustin Pop | @type timeout: float
|
584 | 5c735209 | Iustin Pop | @param timeout: maximum time to wait
|
585 | 6c5a7090 | Michael Hanselmann |
|
586 | 6c5a7090 | Michael Hanselmann | """
|
587 | dfe57c22 | Michael Hanselmann | logging.debug("Waiting for changes in job %s", job_id)
|
588 | 5c735209 | Iustin Pop | end_time = time.time() + timeout |
589 | dfe57c22 | Michael Hanselmann | while True: |
590 | 5c735209 | Iustin Pop | delta_time = end_time - time.time() |
591 | 5c735209 | Iustin Pop | if delta_time < 0: |
592 | 5c735209 | Iustin Pop | return constants.JOB_NOTCHANGED
|
593 | 5c735209 | Iustin Pop | |
594 | 6c5a7090 | Michael Hanselmann | job = self._LoadJobUnlocked(job_id)
|
595 | 6c5a7090 | Michael Hanselmann | if not job: |
596 | 6c5a7090 | Michael Hanselmann | logging.debug("Job %s not found", job_id)
|
597 | 6c5a7090 | Michael Hanselmann | break
|
598 | dfe57c22 | Michael Hanselmann | |
599 | 6c5a7090 | Michael Hanselmann | status = job.CalcStatus() |
600 | 6c5a7090 | Michael Hanselmann | job_info = self._GetJobInfoUnlocked(job, fields)
|
601 | 6c5a7090 | Michael Hanselmann | log_entries = job.GetLogEntries(prev_log_serial) |
602 | dfe57c22 | Michael Hanselmann | |
603 | dfe57c22 | Michael Hanselmann | # Serializing and deserializing data can cause type changes (e.g. from
|
604 | dfe57c22 | Michael Hanselmann | # tuple to list) or precision loss. We're doing it here so that we get
|
605 | dfe57c22 | Michael Hanselmann | # the same modifications as the data received from the client. Without
|
606 | dfe57c22 | Michael Hanselmann | # this, the comparison afterwards might fail without the data being
|
607 | dfe57c22 | Michael Hanselmann | # significantly different.
|
608 | 6c5a7090 | Michael Hanselmann | job_info = serializer.LoadJson(serializer.DumpJson(job_info)) |
609 | 6c5a7090 | Michael Hanselmann | log_entries = serializer.LoadJson(serializer.DumpJson(log_entries)) |
610 | dfe57c22 | Michael Hanselmann | |
611 | 6c5a7090 | Michael Hanselmann | if status not in (constants.JOB_STATUS_QUEUED, |
612 | 6c5a7090 | Michael Hanselmann | constants.JOB_STATUS_RUNNING): |
613 | 6c5a7090 | Michael Hanselmann | # Don't even try to wait if the job is no longer running, there will be
|
614 | 6c5a7090 | Michael Hanselmann | # no changes.
|
615 | dfe57c22 | Michael Hanselmann | break
|
616 | dfe57c22 | Michael Hanselmann | |
617 | 6c5a7090 | Michael Hanselmann | if (prev_job_info != job_info or |
618 | 6c5a7090 | Michael Hanselmann | (log_entries and prev_log_serial != log_entries[0][0])): |
619 | 6c5a7090 | Michael Hanselmann | break
|
620 | 6c5a7090 | Michael Hanselmann | |
621 | 6c5a7090 | Michael Hanselmann | logging.debug("Waiting again")
|
622 | 6c5a7090 | Michael Hanselmann | |
623 | 6c5a7090 | Michael Hanselmann | # Release the queue lock while waiting
|
624 | 5c735209 | Iustin Pop | job.change.wait(delta_time) |
625 | dfe57c22 | Michael Hanselmann | |
626 | dfe57c22 | Michael Hanselmann | logging.debug("Job %s changed", job_id)
|
627 | dfe57c22 | Michael Hanselmann | |
628 | 6c5a7090 | Michael Hanselmann | return (job_info, log_entries)
|
629 | dfe57c22 | Michael Hanselmann | |
630 | f1da30e6 | Michael Hanselmann | @utils.LockedMethod
|
631 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
632 | 188c5e0a | Michael Hanselmann | def CancelJob(self, job_id): |
633 | 188c5e0a | Michael Hanselmann | """Cancels a job.
|
634 | 188c5e0a | Michael Hanselmann |
|
635 | 188c5e0a | Michael Hanselmann | @type job_id: string
|
636 | 188c5e0a | Michael Hanselmann | @param job_id: Job ID of job to be cancelled.
|
637 | 188c5e0a | Michael Hanselmann |
|
638 | 188c5e0a | Michael Hanselmann | """
|
639 | 188c5e0a | Michael Hanselmann | logging.debug("Cancelling job %s", job_id)
|
640 | 188c5e0a | Michael Hanselmann | |
641 | 85f03e0d | Michael Hanselmann | job = self._LoadJobUnlocked(job_id)
|
642 | 188c5e0a | Michael Hanselmann | if not job: |
643 | 188c5e0a | Michael Hanselmann | logging.debug("Job %s not found", job_id)
|
644 | 188c5e0a | Michael Hanselmann | return
|
645 | 188c5e0a | Michael Hanselmann | |
646 | 85f03e0d | Michael Hanselmann | if job.CalcStatus() not in (constants.JOB_STATUS_QUEUED,): |
647 | 188c5e0a | Michael Hanselmann | logging.debug("Job %s is no longer in the queue", job.id)
|
648 | 188c5e0a | Michael Hanselmann | return
|
649 | 188c5e0a | Michael Hanselmann | |
650 | 85f03e0d | Michael Hanselmann | try:
|
651 | 85f03e0d | Michael Hanselmann | for op in job.ops: |
652 | 85f03e0d | Michael Hanselmann | op.status = constants.OP_STATUS_ERROR |
653 | 85f03e0d | Michael Hanselmann | op.result = "Job cancelled by request"
|
654 | 85f03e0d | Michael Hanselmann | finally:
|
655 | 85f03e0d | Michael Hanselmann | self.UpdateJobUnlocked(job)
|
656 | 188c5e0a | Michael Hanselmann | |
657 | c609f802 | Michael Hanselmann | @utils.LockedMethod
|
658 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
659 | f1da30e6 | Michael Hanselmann | def ArchiveJob(self, job_id): |
660 | c609f802 | Michael Hanselmann | """Archives a job.
|
661 | c609f802 | Michael Hanselmann |
|
662 | c609f802 | Michael Hanselmann | @type job_id: string
|
663 | c609f802 | Michael Hanselmann | @param job_id: Job ID of job to be archived.
|
664 | c609f802 | Michael Hanselmann |
|
665 | c609f802 | Michael Hanselmann | """
|
666 | c609f802 | Michael Hanselmann | logging.debug("Archiving job %s", job_id)
|
667 | c609f802 | Michael Hanselmann | |
668 | c609f802 | Michael Hanselmann | job = self._LoadJobUnlocked(job_id)
|
669 | c609f802 | Michael Hanselmann | if not job: |
670 | c609f802 | Michael Hanselmann | logging.debug("Job %s not found", job_id)
|
671 | c609f802 | Michael Hanselmann | return
|
672 | c609f802 | Michael Hanselmann | |
673 | 85f03e0d | Michael Hanselmann | if job.CalcStatus() not in (constants.JOB_STATUS_CANCELED, |
674 | 85f03e0d | Michael Hanselmann | constants.JOB_STATUS_SUCCESS, |
675 | 85f03e0d | Michael Hanselmann | constants.JOB_STATUS_ERROR): |
676 | 85f03e0d | Michael Hanselmann | logging.debug("Job %s is not yet done", job.id)
|
677 | c609f802 | Michael Hanselmann | return
|
678 | c609f802 | Michael Hanselmann | |
679 | 5685c1a5 | Michael Hanselmann | old = self._GetJobPath(job.id)
|
680 | 5685c1a5 | Michael Hanselmann | new = self._GetArchivedJobPath(job.id)
|
681 | c609f802 | Michael Hanselmann | |
682 | 5685c1a5 | Michael Hanselmann | self._RenameFileUnlocked(old, new)
|
683 | c609f802 | Michael Hanselmann | |
684 | 5685c1a5 | Michael Hanselmann | logging.debug("Successfully archived job %s", job.id)
|
685 | f1da30e6 | Michael Hanselmann | |
686 | 85f03e0d | Michael Hanselmann | def _GetJobInfoUnlocked(self, job, fields): |
687 | e2715f69 | Michael Hanselmann | row = [] |
688 | e2715f69 | Michael Hanselmann | for fname in fields: |
689 | e2715f69 | Michael Hanselmann | if fname == "id": |
690 | e2715f69 | Michael Hanselmann | row.append(job.id) |
691 | e2715f69 | Michael Hanselmann | elif fname == "status": |
692 | 85f03e0d | Michael Hanselmann | row.append(job.CalcStatus()) |
693 | af30b2fd | Michael Hanselmann | elif fname == "ops": |
694 | 85f03e0d | Michael Hanselmann | row.append([op.input.__getstate__() for op in job.ops]) |
695 | af30b2fd | Michael Hanselmann | elif fname == "opresult": |
696 | 85f03e0d | Michael Hanselmann | row.append([op.result for op in job.ops]) |
697 | af30b2fd | Michael Hanselmann | elif fname == "opstatus": |
698 | 85f03e0d | Michael Hanselmann | row.append([op.status for op in job.ops]) |
699 | e2715f69 | Michael Hanselmann | else:
|
700 | e2715f69 | Michael Hanselmann | raise errors.OpExecError("Invalid job query field '%s'" % fname) |
701 | e2715f69 | Michael Hanselmann | return row
|
702 | e2715f69 | Michael Hanselmann | |
703 | 85f03e0d | Michael Hanselmann | @utils.LockedMethod
|
704 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
705 | e2715f69 | Michael Hanselmann | def QueryJobs(self, job_ids, fields): |
706 | e2715f69 | Michael Hanselmann | """Returns a list of jobs in queue.
|
707 | e2715f69 | Michael Hanselmann |
|
708 | e2715f69 | Michael Hanselmann | Args:
|
709 | e2715f69 | Michael Hanselmann | - job_ids: Sequence of job identifiers or None for all
|
710 | e2715f69 | Michael Hanselmann | - fields: Names of fields to return
|
711 | e2715f69 | Michael Hanselmann |
|
712 | e2715f69 | Michael Hanselmann | """
|
713 | 85f03e0d | Michael Hanselmann | jobs = [] |
714 | e2715f69 | Michael Hanselmann | |
715 | 85f03e0d | Michael Hanselmann | for job in self._GetJobsUnlocked(job_ids): |
716 | 85f03e0d | Michael Hanselmann | if job is None: |
717 | 85f03e0d | Michael Hanselmann | jobs.append(None)
|
718 | 85f03e0d | Michael Hanselmann | else:
|
719 | 85f03e0d | Michael Hanselmann | jobs.append(self._GetJobInfoUnlocked(job, fields))
|
720 | e2715f69 | Michael Hanselmann | |
721 | 85f03e0d | Michael Hanselmann | return jobs
|
722 | e2715f69 | Michael Hanselmann | |
723 | f1da30e6 | Michael Hanselmann | @utils.LockedMethod
|
724 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
725 | e2715f69 | Michael Hanselmann | def Shutdown(self): |
726 | e2715f69 | Michael Hanselmann | """Stops the job queue.
|
727 | e2715f69 | Michael Hanselmann |
|
728 | e2715f69 | Michael Hanselmann | """
|
729 | e2715f69 | Michael Hanselmann | self._wpool.TerminateWorkers()
|
730 | 85f03e0d | Michael Hanselmann | |
731 | 04ab05ce | Michael Hanselmann | self._queue_lock.Close()
|
732 | 04ab05ce | Michael Hanselmann | self._queue_lock = None |