root / lib / jqueue.py @ 1daae384
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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 | 1daae384 | Iustin Pop | JOBQUEUE_THREADS = 25
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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 | c56ec146 | Iustin Pop | self.received_timestamp = TimeStampNow()
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111 | c56ec146 | Iustin Pop | self.start_timestamp = None |
112 | c56ec146 | Iustin Pop | self.end_timestamp = None |
113 | 6c5a7090 | Michael Hanselmann | |
114 | 6c5a7090 | Michael Hanselmann | # Condition to wait for changes
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115 | 6c5a7090 | Michael Hanselmann | self.change = threading.Condition(self.queue._lock) |
116 | f1da30e6 | Michael Hanselmann | |
117 | f1da30e6 | Michael Hanselmann | @classmethod
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118 | 85f03e0d | Michael Hanselmann | def Restore(cls, queue, state): |
119 | 85f03e0d | Michael Hanselmann | obj = _QueuedJob.__new__(cls) |
120 | 85f03e0d | Michael Hanselmann | obj.queue = queue |
121 | 85f03e0d | Michael Hanselmann | obj.id = state["id"]
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122 | 85f03e0d | Michael Hanselmann | obj.run_op_index = state["run_op_index"]
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123 | c56ec146 | Iustin Pop | obj.received_timestamp = state.get("received_timestamp", None) |
124 | c56ec146 | Iustin Pop | obj.start_timestamp = state.get("start_timestamp", None) |
125 | c56ec146 | Iustin Pop | obj.end_timestamp = state.get("end_timestamp", None) |
126 | 6c5a7090 | Michael Hanselmann | |
127 | 6c5a7090 | Michael Hanselmann | obj.ops = [] |
128 | 6c5a7090 | Michael Hanselmann | obj.log_serial = 0
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129 | 6c5a7090 | Michael Hanselmann | for op_state in state["ops"]: |
130 | 6c5a7090 | Michael Hanselmann | op = _QueuedOpCode.Restore(op_state) |
131 | 6c5a7090 | Michael Hanselmann | for log_entry in op.log: |
132 | 6c5a7090 | Michael Hanselmann | obj.log_serial = max(obj.log_serial, log_entry[0]) |
133 | 6c5a7090 | Michael Hanselmann | obj.ops.append(op) |
134 | 6c5a7090 | Michael Hanselmann | |
135 | 6c5a7090 | Michael Hanselmann | # Condition to wait for changes
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136 | 6c5a7090 | Michael Hanselmann | obj.change = threading.Condition(obj.queue._lock) |
137 | 6c5a7090 | Michael Hanselmann | |
138 | f1da30e6 | Michael Hanselmann | return obj
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139 | f1da30e6 | Michael Hanselmann | |
140 | f1da30e6 | Michael Hanselmann | def Serialize(self): |
141 | f1da30e6 | Michael Hanselmann | return {
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142 | f1da30e6 | Michael Hanselmann | "id": self.id, |
143 | 85f03e0d | Michael Hanselmann | "ops": [op.Serialize() for op in self.ops], |
144 | f1048938 | Iustin Pop | "run_op_index": self.run_op_index, |
145 | c56ec146 | Iustin Pop | "start_timestamp": self.start_timestamp, |
146 | c56ec146 | Iustin Pop | "end_timestamp": self.end_timestamp, |
147 | c56ec146 | Iustin Pop | "received_timestamp": self.received_timestamp, |
148 | f1da30e6 | Michael Hanselmann | } |
149 | f1da30e6 | Michael Hanselmann | |
150 | 85f03e0d | Michael Hanselmann | def CalcStatus(self): |
151 | e2715f69 | Michael Hanselmann | status = constants.JOB_STATUS_QUEUED |
152 | e2715f69 | Michael Hanselmann | |
153 | e2715f69 | Michael Hanselmann | all_success = True
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154 | 85f03e0d | Michael Hanselmann | for op in self.ops: |
155 | 85f03e0d | Michael Hanselmann | if op.status == constants.OP_STATUS_SUCCESS:
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156 | e2715f69 | Michael Hanselmann | continue
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157 | e2715f69 | Michael Hanselmann | |
158 | e2715f69 | Michael Hanselmann | all_success = False
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159 | e2715f69 | Michael Hanselmann | |
160 | 85f03e0d | Michael Hanselmann | if op.status == constants.OP_STATUS_QUEUED:
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161 | e2715f69 | Michael Hanselmann | pass
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162 | 85f03e0d | Michael Hanselmann | elif op.status == constants.OP_STATUS_RUNNING:
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163 | e2715f69 | Michael Hanselmann | status = constants.JOB_STATUS_RUNNING |
164 | 85f03e0d | Michael Hanselmann | elif op.status == constants.OP_STATUS_ERROR:
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165 | f1da30e6 | Michael Hanselmann | status = constants.JOB_STATUS_ERROR |
166 | f1da30e6 | Michael Hanselmann | # The whole job fails if one opcode failed
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167 | f1da30e6 | Michael Hanselmann | break
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168 | 85f03e0d | Michael Hanselmann | elif op.status == constants.OP_STATUS_CANCELED:
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169 | 4cb1d919 | Michael Hanselmann | status = constants.OP_STATUS_CANCELED |
170 | 4cb1d919 | Michael Hanselmann | break
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171 | e2715f69 | Michael Hanselmann | |
172 | e2715f69 | Michael Hanselmann | if all_success:
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173 | e2715f69 | Michael Hanselmann | status = constants.JOB_STATUS_SUCCESS |
174 | e2715f69 | Michael Hanselmann | |
175 | e2715f69 | Michael Hanselmann | return status
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176 | e2715f69 | Michael Hanselmann | |
177 | 6c5a7090 | Michael Hanselmann | def GetLogEntries(self, newer_than): |
178 | 6c5a7090 | Michael Hanselmann | if newer_than is None: |
179 | 6c5a7090 | Michael Hanselmann | serial = -1
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180 | 6c5a7090 | Michael Hanselmann | else:
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181 | 6c5a7090 | Michael Hanselmann | serial = newer_than |
182 | 6c5a7090 | Michael Hanselmann | |
183 | 6c5a7090 | Michael Hanselmann | entries = [] |
184 | 6c5a7090 | Michael Hanselmann | for op in self.ops: |
185 | 6c5a7090 | Michael Hanselmann | entries.extend(filter(lambda entry: entry[0] > newer_than, op.log)) |
186 | 6c5a7090 | Michael Hanselmann | |
187 | 6c5a7090 | Michael Hanselmann | return entries
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188 | 6c5a7090 | Michael Hanselmann | |
189 | f1048938 | Iustin Pop | |
190 | 85f03e0d | Michael Hanselmann | class _JobQueueWorker(workerpool.BaseWorker): |
191 | 85f03e0d | Michael Hanselmann | def RunTask(self, job): |
192 | e2715f69 | Michael Hanselmann | """Job executor.
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193 | e2715f69 | Michael Hanselmann |
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194 | 6c5a7090 | Michael Hanselmann | This functions processes a job. It is closely tied to the _QueuedJob and
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195 | 6c5a7090 | Michael Hanselmann | _QueuedOpCode classes.
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196 | e2715f69 | Michael Hanselmann |
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197 | e2715f69 | Michael Hanselmann | """
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198 | e2715f69 | Michael Hanselmann | logging.debug("Worker %s processing job %s",
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199 | e2715f69 | Michael Hanselmann | self.worker_id, job.id)
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200 | 5bdce580 | Michael Hanselmann | proc = mcpu.Processor(self.pool.queue.context)
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201 | 85f03e0d | Michael Hanselmann | queue = job.queue |
202 | e2715f69 | Michael Hanselmann | try:
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203 | 85f03e0d | Michael Hanselmann | try:
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204 | 85f03e0d | Michael Hanselmann | count = len(job.ops)
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205 | 85f03e0d | Michael Hanselmann | for idx, op in enumerate(job.ops): |
206 | 85f03e0d | Michael Hanselmann | try:
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207 | 85f03e0d | Michael Hanselmann | logging.debug("Op %s/%s: Starting %s", idx + 1, count, op) |
208 | 85f03e0d | Michael Hanselmann | |
209 | 85f03e0d | Michael Hanselmann | queue.acquire() |
210 | 85f03e0d | Michael Hanselmann | try:
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211 | 85f03e0d | Michael Hanselmann | job.run_op_index = idx |
212 | 85f03e0d | Michael Hanselmann | op.status = constants.OP_STATUS_RUNNING |
213 | 85f03e0d | Michael Hanselmann | op.result = None
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214 | 70552c46 | Michael Hanselmann | op.start_timestamp = TimeStampNow() |
215 | c56ec146 | Iustin Pop | if idx == 0: # first opcode |
216 | c56ec146 | Iustin Pop | job.start_timestamp = op.start_timestamp |
217 | 85f03e0d | Michael Hanselmann | queue.UpdateJobUnlocked(job) |
218 | 85f03e0d | Michael Hanselmann | |
219 | 38206f3c | Iustin Pop | input_opcode = op.input |
220 | 85f03e0d | Michael Hanselmann | finally:
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221 | 85f03e0d | Michael Hanselmann | queue.release() |
222 | 85f03e0d | Michael Hanselmann | |
223 | dfe57c22 | Michael Hanselmann | def _Log(*args): |
224 | 6c5a7090 | Michael Hanselmann | """Append a log entry.
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225 | 6c5a7090 | Michael Hanselmann |
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226 | 6c5a7090 | Michael Hanselmann | """
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227 | 6c5a7090 | Michael Hanselmann | assert len(args) < 3 |
228 | 6c5a7090 | Michael Hanselmann | |
229 | 6c5a7090 | Michael Hanselmann | if len(args) == 1: |
230 | 6c5a7090 | Michael Hanselmann | log_type = constants.ELOG_MESSAGE |
231 | 6c5a7090 | Michael Hanselmann | log_msg = args[0]
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232 | 6c5a7090 | Michael Hanselmann | else:
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233 | 6c5a7090 | Michael Hanselmann | log_type, log_msg = args |
234 | 6c5a7090 | Michael Hanselmann | |
235 | 6c5a7090 | Michael Hanselmann | # The time is split to make serialization easier and not lose
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236 | 6c5a7090 | Michael Hanselmann | # precision.
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237 | 6c5a7090 | Michael Hanselmann | timestamp = utils.SplitTime(time.time()) |
238 | dfe57c22 | Michael Hanselmann | |
239 | 6c5a7090 | Michael Hanselmann | queue.acquire() |
240 | dfe57c22 | Michael Hanselmann | try:
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241 | 6c5a7090 | Michael Hanselmann | job.log_serial += 1
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242 | 6c5a7090 | Michael Hanselmann | op.log.append((job.log_serial, timestamp, log_type, log_msg)) |
243 | 6c5a7090 | Michael Hanselmann | |
244 | dfe57c22 | Michael Hanselmann | job.change.notifyAll() |
245 | dfe57c22 | Michael Hanselmann | finally:
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246 | 6c5a7090 | Michael Hanselmann | queue.release() |
247 | dfe57c22 | Michael Hanselmann | |
248 | 6c5a7090 | Michael Hanselmann | # Make sure not to hold lock while _Log is called
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249 | dfe57c22 | Michael Hanselmann | result = proc.ExecOpCode(input_opcode, _Log) |
250 | 85f03e0d | Michael Hanselmann | |
251 | 85f03e0d | Michael Hanselmann | queue.acquire() |
252 | 85f03e0d | Michael Hanselmann | try:
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253 | 85f03e0d | Michael Hanselmann | op.status = constants.OP_STATUS_SUCCESS |
254 | 85f03e0d | Michael Hanselmann | op.result = result |
255 | 70552c46 | Michael Hanselmann | op.end_timestamp = TimeStampNow() |
256 | 85f03e0d | Michael Hanselmann | queue.UpdateJobUnlocked(job) |
257 | 85f03e0d | Michael Hanselmann | finally:
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258 | 85f03e0d | Michael Hanselmann | queue.release() |
259 | 85f03e0d | Michael Hanselmann | |
260 | 85f03e0d | Michael Hanselmann | logging.debug("Op %s/%s: Successfully finished %s",
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261 | 85f03e0d | Michael Hanselmann | idx + 1, count, op)
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262 | 85f03e0d | Michael Hanselmann | except Exception, err: |
263 | 85f03e0d | Michael Hanselmann | queue.acquire() |
264 | 85f03e0d | Michael Hanselmann | try:
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265 | 85f03e0d | Michael Hanselmann | try:
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266 | 85f03e0d | Michael Hanselmann | op.status = constants.OP_STATUS_ERROR |
267 | 85f03e0d | Michael Hanselmann | op.result = str(err)
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268 | 70552c46 | Michael Hanselmann | op.end_timestamp = TimeStampNow() |
269 | 85f03e0d | Michael Hanselmann | logging.debug("Op %s/%s: Error in %s", idx + 1, count, op) |
270 | 85f03e0d | Michael Hanselmann | finally:
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271 | 85f03e0d | Michael Hanselmann | queue.UpdateJobUnlocked(job) |
272 | 85f03e0d | Michael Hanselmann | finally:
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273 | 85f03e0d | Michael Hanselmann | queue.release() |
274 | 85f03e0d | Michael Hanselmann | raise
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275 | 85f03e0d | Michael Hanselmann | |
276 | 85f03e0d | Michael Hanselmann | except errors.GenericError, err:
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277 | 85f03e0d | Michael Hanselmann | logging.exception("Ganeti exception")
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278 | 85f03e0d | Michael Hanselmann | except:
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279 | 85f03e0d | Michael Hanselmann | logging.exception("Unhandled exception")
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280 | e2715f69 | Michael Hanselmann | finally:
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281 | 85f03e0d | Michael Hanselmann | queue.acquire() |
282 | 85f03e0d | Michael Hanselmann | try:
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283 | 65548ed5 | Michael Hanselmann | try:
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284 | 65548ed5 | Michael Hanselmann | job.run_op_idx = -1
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285 | c56ec146 | Iustin Pop | job.end_timestamp = TimeStampNow() |
286 | 65548ed5 | Michael Hanselmann | queue.UpdateJobUnlocked(job) |
287 | 65548ed5 | Michael Hanselmann | finally:
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288 | 65548ed5 | Michael Hanselmann | job_id = job.id |
289 | 65548ed5 | Michael Hanselmann | status = job.CalcStatus() |
290 | 85f03e0d | Michael Hanselmann | finally:
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291 | 85f03e0d | Michael Hanselmann | queue.release() |
292 | e2715f69 | Michael Hanselmann | logging.debug("Worker %s finished job %s, status = %s",
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293 | 85f03e0d | Michael Hanselmann | self.worker_id, job_id, status)
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294 | e2715f69 | Michael Hanselmann | |
295 | e2715f69 | Michael Hanselmann | |
296 | e2715f69 | Michael Hanselmann | class _JobQueueWorkerPool(workerpool.WorkerPool): |
297 | 5bdce580 | Michael Hanselmann | def __init__(self, queue): |
298 | e2715f69 | Michael Hanselmann | super(_JobQueueWorkerPool, self).__init__(JOBQUEUE_THREADS, |
299 | e2715f69 | Michael Hanselmann | _JobQueueWorker) |
300 | 5bdce580 | Michael Hanselmann | self.queue = queue
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301 | e2715f69 | Michael Hanselmann | |
302 | e2715f69 | Michael Hanselmann | |
303 | 85f03e0d | Michael Hanselmann | class JobQueue(object): |
304 | bac5ffc3 | Oleksiy Mishchenko | _RE_JOB_FILE = re.compile(r"^job-(%s)$" % constants.JOB_ID_TEMPLATE)
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305 | f1da30e6 | Michael Hanselmann | |
306 | db37da70 | Michael Hanselmann | def _RequireOpenQueue(fn): |
307 | db37da70 | Michael Hanselmann | """Decorator for "public" functions.
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308 | db37da70 | Michael Hanselmann |
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309 | db37da70 | Michael Hanselmann | This function should be used for all "public" functions. That is, functions
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310 | db37da70 | Michael Hanselmann | usually called from other classes.
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311 | db37da70 | Michael Hanselmann |
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312 | db37da70 | Michael Hanselmann | Important: Use this decorator only after utils.LockedMethod!
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313 | db37da70 | Michael Hanselmann |
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314 | db37da70 | Michael Hanselmann | Example:
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315 | db37da70 | Michael Hanselmann | @utils.LockedMethod
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316 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
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317 | db37da70 | Michael Hanselmann | def Example(self):
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318 | db37da70 | Michael Hanselmann | pass
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319 | db37da70 | Michael Hanselmann |
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320 | db37da70 | Michael Hanselmann | """
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321 | db37da70 | Michael Hanselmann | def wrapper(self, *args, **kwargs): |
322 | 04ab05ce | Michael Hanselmann | assert self._queue_lock is not None, "Queue should be open" |
323 | db37da70 | Michael Hanselmann | return fn(self, *args, **kwargs) |
324 | db37da70 | Michael Hanselmann | return wrapper
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325 | db37da70 | Michael Hanselmann | |
326 | 85f03e0d | Michael Hanselmann | def __init__(self, context): |
327 | 5bdce580 | Michael Hanselmann | self.context = context
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328 | 5685c1a5 | Michael Hanselmann | self._memcache = weakref.WeakValueDictionary()
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329 | c3f0a12f | Iustin Pop | self._my_hostname = utils.HostInfo().name
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330 | f1da30e6 | Michael Hanselmann | |
331 | 85f03e0d | Michael Hanselmann | # Locking
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332 | 85f03e0d | Michael Hanselmann | self._lock = threading.Lock()
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333 | 85f03e0d | Michael Hanselmann | self.acquire = self._lock.acquire |
334 | 85f03e0d | Michael Hanselmann | self.release = self._lock.release |
335 | 85f03e0d | Michael Hanselmann | |
336 | 04ab05ce | Michael Hanselmann | # Initialize
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337 | 5d6fb8eb | Michael Hanselmann | self._queue_lock = jstore.InitAndVerifyQueue(must_lock=True) |
338 | f1da30e6 | Michael Hanselmann | |
339 | 04ab05ce | Michael Hanselmann | # Read serial file
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340 | 04ab05ce | Michael Hanselmann | self._last_serial = jstore.ReadSerial()
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341 | 04ab05ce | Michael Hanselmann | assert self._last_serial is not None, ("Serial file was modified between" |
342 | 04ab05ce | Michael Hanselmann | " check in jstore and here")
|
343 | c4beba1c | Iustin Pop | |
344 | 23752136 | Michael Hanselmann | # Get initial list of nodes
|
345 | 8e00939c | Michael Hanselmann | self._nodes = set(self.context.cfg.GetNodeList()) |
346 | 8e00939c | Michael Hanselmann | |
347 | 8e00939c | Michael Hanselmann | # Remove master node
|
348 | 8e00939c | Michael Hanselmann | try:
|
349 | 8e00939c | Michael Hanselmann | self._nodes.remove(self._my_hostname) |
350 | 8e00939c | Michael Hanselmann | except ValueError: |
351 | 8e00939c | Michael Hanselmann | pass
|
352 | 23752136 | Michael Hanselmann | |
353 | 23752136 | Michael Hanselmann | # TODO: Check consistency across nodes
|
354 | 23752136 | Michael Hanselmann | |
355 | 85f03e0d | Michael Hanselmann | # Setup worker pool
|
356 | 5bdce580 | Michael Hanselmann | self._wpool = _JobQueueWorkerPool(self) |
357 | 85f03e0d | Michael Hanselmann | |
358 | 85f03e0d | Michael Hanselmann | # We need to lock here because WorkerPool.AddTask() may start a job while
|
359 | 85f03e0d | Michael Hanselmann | # we're still doing our work.
|
360 | 85f03e0d | Michael Hanselmann | self.acquire()
|
361 | 85f03e0d | Michael Hanselmann | try:
|
362 | 85f03e0d | Michael Hanselmann | for job in self._GetJobsUnlocked(None): |
363 | 85f03e0d | Michael Hanselmann | status = job.CalcStatus() |
364 | 85f03e0d | Michael Hanselmann | |
365 | 85f03e0d | Michael Hanselmann | if status in (constants.JOB_STATUS_QUEUED, ): |
366 | 85f03e0d | Michael Hanselmann | self._wpool.AddTask(job)
|
367 | 85f03e0d | Michael Hanselmann | |
368 | 85f03e0d | Michael Hanselmann | elif status in (constants.JOB_STATUS_RUNNING, ): |
369 | 85f03e0d | Michael Hanselmann | logging.warning("Unfinished job %s found: %s", job.id, job)
|
370 | 85f03e0d | Michael Hanselmann | try:
|
371 | 85f03e0d | Michael Hanselmann | for op in job.ops: |
372 | 85f03e0d | Michael Hanselmann | op.status = constants.OP_STATUS_ERROR |
373 | 85f03e0d | Michael Hanselmann | op.result = "Unclean master daemon shutdown"
|
374 | 85f03e0d | Michael Hanselmann | finally:
|
375 | 85f03e0d | Michael Hanselmann | self.UpdateJobUnlocked(job)
|
376 | 85f03e0d | Michael Hanselmann | finally:
|
377 | 85f03e0d | Michael Hanselmann | self.release()
|
378 | 85f03e0d | Michael Hanselmann | |
379 | d2e03a33 | Michael Hanselmann | @utils.LockedMethod
|
380 | d2e03a33 | Michael Hanselmann | @_RequireOpenQueue
|
381 | d2e03a33 | Michael Hanselmann | def AddNode(self, node_name): |
382 | d2e03a33 | Michael Hanselmann | assert node_name != self._my_hostname |
383 | 23752136 | Michael Hanselmann | |
384 | 9f774ee8 | Michael Hanselmann | # Clean queue directory on added node
|
385 | 9f774ee8 | Michael Hanselmann | rpc.call_jobqueue_purge(node_name) |
386 | 23752136 | Michael Hanselmann | |
387 | d2e03a33 | Michael Hanselmann | # Upload the whole queue excluding archived jobs
|
388 | d2e03a33 | Michael Hanselmann | files = [self._GetJobPath(job_id) for job_id in self._GetJobIDsUnlocked()] |
389 | 23752136 | Michael Hanselmann | |
390 | d2e03a33 | Michael Hanselmann | # Upload current serial file
|
391 | d2e03a33 | Michael Hanselmann | files.append(constants.JOB_QUEUE_SERIAL_FILE) |
392 | d2e03a33 | Michael Hanselmann | |
393 | d2e03a33 | Michael Hanselmann | for file_name in files: |
394 | 9f774ee8 | Michael Hanselmann | # Read file content
|
395 | 9f774ee8 | Michael Hanselmann | fd = open(file_name, "r") |
396 | 9f774ee8 | Michael Hanselmann | try:
|
397 | 9f774ee8 | Michael Hanselmann | content = fd.read() |
398 | 9f774ee8 | Michael Hanselmann | finally:
|
399 | 9f774ee8 | Michael Hanselmann | fd.close() |
400 | 9f774ee8 | Michael Hanselmann | |
401 | 9f774ee8 | Michael Hanselmann | result = rpc.call_jobqueue_update([node_name], file_name, content) |
402 | d2e03a33 | Michael Hanselmann | if not result[node_name]: |
403 | d2e03a33 | Michael Hanselmann | logging.error("Failed to upload %s to %s", file_name, node_name)
|
404 | d2e03a33 | Michael Hanselmann | |
405 | d2e03a33 | Michael Hanselmann | self._nodes.add(node_name)
|
406 | d2e03a33 | Michael Hanselmann | |
407 | d2e03a33 | Michael Hanselmann | @utils.LockedMethod
|
408 | d2e03a33 | Michael Hanselmann | @_RequireOpenQueue
|
409 | d2e03a33 | Michael Hanselmann | def RemoveNode(self, node_name): |
410 | 23752136 | Michael Hanselmann | try:
|
411 | d2e03a33 | Michael Hanselmann | # The queue is removed by the "leave node" RPC call.
|
412 | d2e03a33 | Michael Hanselmann | self._nodes.remove(node_name)
|
413 | d2e03a33 | Michael Hanselmann | except KeyError: |
414 | 23752136 | Michael Hanselmann | pass
|
415 | 23752136 | Michael Hanselmann | |
416 | e74798c1 | Michael Hanselmann | def _CheckRpcResult(self, result, nodes, failmsg): |
417 | e74798c1 | Michael Hanselmann | failed = [] |
418 | e74798c1 | Michael Hanselmann | success = [] |
419 | e74798c1 | Michael Hanselmann | |
420 | e74798c1 | Michael Hanselmann | for node in nodes: |
421 | e74798c1 | Michael Hanselmann | if result[node]:
|
422 | e74798c1 | Michael Hanselmann | success.append(node) |
423 | e74798c1 | Michael Hanselmann | else:
|
424 | e74798c1 | Michael Hanselmann | failed.append(node) |
425 | e74798c1 | Michael Hanselmann | |
426 | e74798c1 | Michael Hanselmann | if failed:
|
427 | e74798c1 | Michael Hanselmann | logging.error("%s failed on %s", failmsg, ", ".join(failed)) |
428 | e74798c1 | Michael Hanselmann | |
429 | e74798c1 | Michael Hanselmann | # +1 for the master node
|
430 | e74798c1 | Michael Hanselmann | if (len(success) + 1) < len(failed): |
431 | e74798c1 | Michael Hanselmann | # TODO: Handle failing nodes
|
432 | e74798c1 | Michael Hanselmann | logging.error("More than half of the nodes failed")
|
433 | e74798c1 | Michael Hanselmann | |
434 | 8e00939c | Michael Hanselmann | def _WriteAndReplicateFileUnlocked(self, file_name, data): |
435 | 8e00939c | Michael Hanselmann | """Writes a file locally and then replicates it to all nodes.
|
436 | 8e00939c | Michael Hanselmann |
|
437 | 8e00939c | Michael Hanselmann | """
|
438 | 8e00939c | Michael Hanselmann | utils.WriteFile(file_name, data=data) |
439 | 8e00939c | Michael Hanselmann | |
440 | 9f774ee8 | Michael Hanselmann | result = rpc.call_jobqueue_update(self._nodes, file_name, data)
|
441 | e74798c1 | Michael Hanselmann | self._CheckRpcResult(result, self._nodes, |
442 | e74798c1 | Michael Hanselmann | "Updating %s" % file_name)
|
443 | 23752136 | Michael Hanselmann | |
444 | abc1f2ce | Michael Hanselmann | def _RenameFileUnlocked(self, old, new): |
445 | abc1f2ce | Michael Hanselmann | os.rename(old, new) |
446 | abc1f2ce | Michael Hanselmann | |
447 | abc1f2ce | Michael Hanselmann | result = rpc.call_jobqueue_rename(self._nodes, old, new)
|
448 | e74798c1 | Michael Hanselmann | self._CheckRpcResult(result, self._nodes, |
449 | e74798c1 | Michael Hanselmann | "Moving %s to %s" % (old, new))
|
450 | abc1f2ce | Michael Hanselmann | |
451 | 85f03e0d | Michael Hanselmann | def _FormatJobID(self, job_id): |
452 | 85f03e0d | Michael Hanselmann | if not isinstance(job_id, (int, long)): |
453 | 85f03e0d | Michael Hanselmann | raise errors.ProgrammerError("Job ID '%s' not numeric" % job_id) |
454 | 85f03e0d | Michael Hanselmann | if job_id < 0: |
455 | 85f03e0d | Michael Hanselmann | raise errors.ProgrammerError("Job ID %s is negative" % job_id) |
456 | 85f03e0d | Michael Hanselmann | |
457 | 85f03e0d | Michael Hanselmann | return str(job_id) |
458 | 85f03e0d | Michael Hanselmann | |
459 | 4c848b18 | Michael Hanselmann | def _NewSerialUnlocked(self): |
460 | f1da30e6 | Michael Hanselmann | """Generates a new job identifier.
|
461 | f1da30e6 | Michael Hanselmann |
|
462 | f1da30e6 | Michael Hanselmann | Job identifiers are unique during the lifetime of a cluster.
|
463 | f1da30e6 | Michael Hanselmann |
|
464 | f1da30e6 | Michael Hanselmann | Returns: A string representing the job identifier.
|
465 | f1da30e6 | Michael Hanselmann |
|
466 | f1da30e6 | Michael Hanselmann | """
|
467 | f1da30e6 | Michael Hanselmann | # New number
|
468 | f1da30e6 | Michael Hanselmann | serial = self._last_serial + 1 |
469 | f1da30e6 | Michael Hanselmann | |
470 | f1da30e6 | Michael Hanselmann | # Write to file
|
471 | 23752136 | Michael Hanselmann | self._WriteAndReplicateFileUnlocked(constants.JOB_QUEUE_SERIAL_FILE,
|
472 | 23752136 | Michael Hanselmann | "%s\n" % serial)
|
473 | f1da30e6 | Michael Hanselmann | |
474 | f1da30e6 | Michael Hanselmann | # Keep it only if we were able to write the file
|
475 | f1da30e6 | Michael Hanselmann | self._last_serial = serial
|
476 | f1da30e6 | Michael Hanselmann | |
477 | 85f03e0d | Michael Hanselmann | return self._FormatJobID(serial) |
478 | f1da30e6 | Michael Hanselmann | |
479 | 85f03e0d | Michael Hanselmann | @staticmethod
|
480 | 85f03e0d | Michael Hanselmann | def _GetJobPath(job_id): |
481 | f1da30e6 | Michael Hanselmann | return os.path.join(constants.QUEUE_DIR, "job-%s" % job_id) |
482 | f1da30e6 | Michael Hanselmann | |
483 | 85f03e0d | Michael Hanselmann | @staticmethod
|
484 | 85f03e0d | Michael Hanselmann | def _GetArchivedJobPath(job_id): |
485 | 0cb94105 | Michael Hanselmann | return os.path.join(constants.JOB_QUEUE_ARCHIVE_DIR, "job-%s" % job_id) |
486 | 0cb94105 | Michael Hanselmann | |
487 | 85f03e0d | Michael Hanselmann | @classmethod
|
488 | 85f03e0d | Michael Hanselmann | def _ExtractJobID(cls, name): |
489 | 85f03e0d | Michael Hanselmann | m = cls._RE_JOB_FILE.match(name) |
490 | fae737ac | Michael Hanselmann | if m:
|
491 | fae737ac | Michael Hanselmann | return m.group(1) |
492 | fae737ac | Michael Hanselmann | else:
|
493 | fae737ac | Michael Hanselmann | return None |
494 | fae737ac | Michael Hanselmann | |
495 | 911a495b | Iustin Pop | def _GetJobIDsUnlocked(self, archived=False): |
496 | 911a495b | Iustin Pop | """Return all known job IDs.
|
497 | 911a495b | Iustin Pop |
|
498 | 911a495b | Iustin Pop | If the parameter archived is True, archived jobs IDs will be
|
499 | 911a495b | Iustin Pop | included. Currently this argument is unused.
|
500 | 911a495b | Iustin Pop |
|
501 | ac0930b9 | Iustin Pop | The method only looks at disk because it's a requirement that all
|
502 | ac0930b9 | Iustin Pop | jobs are present on disk (so in the _memcache we don't have any
|
503 | ac0930b9 | Iustin Pop | extra IDs).
|
504 | ac0930b9 | Iustin Pop |
|
505 | 911a495b | Iustin Pop | """
|
506 | fae737ac | Michael Hanselmann | jlist = [self._ExtractJobID(name) for name in self._ListJobFiles()] |
507 | 3b87986e | Iustin Pop | jlist = utils.NiceSort(jlist) |
508 | f0d874fe | Iustin Pop | return jlist
|
509 | 911a495b | Iustin Pop | |
510 | f1da30e6 | Michael Hanselmann | def _ListJobFiles(self): |
511 | f1da30e6 | Michael Hanselmann | return [name for name in utils.ListVisibleFiles(constants.QUEUE_DIR) |
512 | f1da30e6 | Michael Hanselmann | if self._RE_JOB_FILE.match(name)] |
513 | f1da30e6 | Michael Hanselmann | |
514 | 911a495b | Iustin Pop | def _LoadJobUnlocked(self, job_id): |
515 | 5685c1a5 | Michael Hanselmann | job = self._memcache.get(job_id, None) |
516 | 5685c1a5 | Michael Hanselmann | if job:
|
517 | 205d71fd | Michael Hanselmann | logging.debug("Found job %s in memcache", job_id)
|
518 | 5685c1a5 | Michael Hanselmann | return job
|
519 | ac0930b9 | Iustin Pop | |
520 | 911a495b | Iustin Pop | filepath = self._GetJobPath(job_id)
|
521 | f1da30e6 | Michael Hanselmann | logging.debug("Loading job from %s", filepath)
|
522 | f1da30e6 | Michael Hanselmann | try:
|
523 | f1da30e6 | Michael Hanselmann | fd = open(filepath, "r") |
524 | f1da30e6 | Michael Hanselmann | except IOError, err: |
525 | f1da30e6 | Michael Hanselmann | if err.errno in (errno.ENOENT, ): |
526 | f1da30e6 | Michael Hanselmann | return None |
527 | f1da30e6 | Michael Hanselmann | raise
|
528 | f1da30e6 | Michael Hanselmann | try:
|
529 | f1da30e6 | Michael Hanselmann | data = serializer.LoadJson(fd.read()) |
530 | f1da30e6 | Michael Hanselmann | finally:
|
531 | f1da30e6 | Michael Hanselmann | fd.close() |
532 | f1da30e6 | Michael Hanselmann | |
533 | ac0930b9 | Iustin Pop | job = _QueuedJob.Restore(self, data)
|
534 | ac0930b9 | Iustin Pop | self._memcache[job_id] = job
|
535 | 205d71fd | Michael Hanselmann | logging.debug("Added job %s to the cache", job_id)
|
536 | ac0930b9 | Iustin Pop | return job
|
537 | f1da30e6 | Michael Hanselmann | |
538 | f1da30e6 | Michael Hanselmann | def _GetJobsUnlocked(self, job_ids): |
539 | 911a495b | Iustin Pop | if not job_ids: |
540 | 911a495b | Iustin Pop | job_ids = self._GetJobIDsUnlocked()
|
541 | f1da30e6 | Michael Hanselmann | |
542 | 911a495b | Iustin Pop | return [self._LoadJobUnlocked(job_id) for job_id in job_ids] |
543 | f1da30e6 | Michael Hanselmann | |
544 | f1da30e6 | Michael Hanselmann | @utils.LockedMethod
|
545 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
546 | 4c848b18 | Michael Hanselmann | def SubmitJob(self, ops): |
547 | 85f03e0d | Michael Hanselmann | """Create and store a new job.
|
548 | f1da30e6 | Michael Hanselmann |
|
549 | 85f03e0d | Michael Hanselmann | This enters the job into our job queue and also puts it on the new
|
550 | 85f03e0d | Michael Hanselmann | queue, in order for it to be picked up by the queue processors.
|
551 | c3f0a12f | Iustin Pop |
|
552 | c3f0a12f | Iustin Pop | @type ops: list
|
553 | 205d71fd | Michael Hanselmann | @param ops: The list of OpCodes that will become the new job.
|
554 | c3f0a12f | Iustin Pop |
|
555 | c3f0a12f | Iustin Pop | """
|
556 | f1da30e6 | Michael Hanselmann | # Get job identifier
|
557 | 4c848b18 | Michael Hanselmann | job_id = self._NewSerialUnlocked()
|
558 | f1da30e6 | Michael Hanselmann | job = _QueuedJob(self, job_id, ops)
|
559 | f1da30e6 | Michael Hanselmann | |
560 | f1da30e6 | Michael Hanselmann | # Write to disk
|
561 | 85f03e0d | Michael Hanselmann | self.UpdateJobUnlocked(job)
|
562 | f1da30e6 | Michael Hanselmann | |
563 | 5685c1a5 | Michael Hanselmann | logging.debug("Adding new job %s to the cache", job_id)
|
564 | ac0930b9 | Iustin Pop | self._memcache[job_id] = job
|
565 | ac0930b9 | Iustin Pop | |
566 | 85f03e0d | Michael Hanselmann | # Add to worker pool
|
567 | 85f03e0d | Michael Hanselmann | self._wpool.AddTask(job)
|
568 | 85f03e0d | Michael Hanselmann | |
569 | 85f03e0d | Michael Hanselmann | return job.id
|
570 | f1da30e6 | Michael Hanselmann | |
571 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
572 | 85f03e0d | Michael Hanselmann | def UpdateJobUnlocked(self, job): |
573 | f1da30e6 | Michael Hanselmann | filename = self._GetJobPath(job.id)
|
574 | 23752136 | Michael Hanselmann | data = serializer.DumpJson(job.Serialize(), indent=False)
|
575 | f1da30e6 | Michael Hanselmann | logging.debug("Writing job %s to %s", job.id, filename)
|
576 | 23752136 | Michael Hanselmann | self._WriteAndReplicateFileUnlocked(filename, data)
|
577 | ac0930b9 | Iustin Pop | |
578 | dfe57c22 | Michael Hanselmann | # Notify waiters about potential changes
|
579 | 6c5a7090 | Michael Hanselmann | job.change.notifyAll() |
580 | dfe57c22 | Michael Hanselmann | |
581 | 6c5a7090 | Michael Hanselmann | @utils.LockedMethod
|
582 | dfe57c22 | Michael Hanselmann | @_RequireOpenQueue
|
583 | 5c735209 | Iustin Pop | def WaitForJobChanges(self, job_id, fields, prev_job_info, prev_log_serial, |
584 | 5c735209 | Iustin Pop | timeout): |
585 | 6c5a7090 | Michael Hanselmann | """Waits for changes in a job.
|
586 | 6c5a7090 | Michael Hanselmann |
|
587 | 6c5a7090 | Michael Hanselmann | @type job_id: string
|
588 | 6c5a7090 | Michael Hanselmann | @param job_id: Job identifier
|
589 | 6c5a7090 | Michael Hanselmann | @type fields: list of strings
|
590 | 6c5a7090 | Michael Hanselmann | @param fields: Which fields to check for changes
|
591 | 6c5a7090 | Michael Hanselmann | @type prev_job_info: list or None
|
592 | 6c5a7090 | Michael Hanselmann | @param prev_job_info: Last job information returned
|
593 | 6c5a7090 | Michael Hanselmann | @type prev_log_serial: int
|
594 | 6c5a7090 | Michael Hanselmann | @param prev_log_serial: Last job message serial number
|
595 | 5c735209 | Iustin Pop | @type timeout: float
|
596 | 5c735209 | Iustin Pop | @param timeout: maximum time to wait
|
597 | 6c5a7090 | Michael Hanselmann |
|
598 | 6c5a7090 | Michael Hanselmann | """
|
599 | dfe57c22 | Michael Hanselmann | logging.debug("Waiting for changes in job %s", job_id)
|
600 | 5c735209 | Iustin Pop | end_time = time.time() + timeout |
601 | dfe57c22 | Michael Hanselmann | while True: |
602 | 5c735209 | Iustin Pop | delta_time = end_time - time.time() |
603 | 5c735209 | Iustin Pop | if delta_time < 0: |
604 | 5c735209 | Iustin Pop | return constants.JOB_NOTCHANGED
|
605 | 5c735209 | Iustin Pop | |
606 | 6c5a7090 | Michael Hanselmann | job = self._LoadJobUnlocked(job_id)
|
607 | 6c5a7090 | Michael Hanselmann | if not job: |
608 | 6c5a7090 | Michael Hanselmann | logging.debug("Job %s not found", job_id)
|
609 | 6c5a7090 | Michael Hanselmann | break
|
610 | dfe57c22 | Michael Hanselmann | |
611 | 6c5a7090 | Michael Hanselmann | status = job.CalcStatus() |
612 | 6c5a7090 | Michael Hanselmann | job_info = self._GetJobInfoUnlocked(job, fields)
|
613 | 6c5a7090 | Michael Hanselmann | log_entries = job.GetLogEntries(prev_log_serial) |
614 | dfe57c22 | Michael Hanselmann | |
615 | dfe57c22 | Michael Hanselmann | # Serializing and deserializing data can cause type changes (e.g. from
|
616 | dfe57c22 | Michael Hanselmann | # tuple to list) or precision loss. We're doing it here so that we get
|
617 | dfe57c22 | Michael Hanselmann | # the same modifications as the data received from the client. Without
|
618 | dfe57c22 | Michael Hanselmann | # this, the comparison afterwards might fail without the data being
|
619 | dfe57c22 | Michael Hanselmann | # significantly different.
|
620 | 6c5a7090 | Michael Hanselmann | job_info = serializer.LoadJson(serializer.DumpJson(job_info)) |
621 | 6c5a7090 | Michael Hanselmann | log_entries = serializer.LoadJson(serializer.DumpJson(log_entries)) |
622 | dfe57c22 | Michael Hanselmann | |
623 | 6c5a7090 | Michael Hanselmann | if status not in (constants.JOB_STATUS_QUEUED, |
624 | 6c5a7090 | Michael Hanselmann | constants.JOB_STATUS_RUNNING): |
625 | 6c5a7090 | Michael Hanselmann | # Don't even try to wait if the job is no longer running, there will be
|
626 | 6c5a7090 | Michael Hanselmann | # no changes.
|
627 | dfe57c22 | Michael Hanselmann | break
|
628 | dfe57c22 | Michael Hanselmann | |
629 | 6c5a7090 | Michael Hanselmann | if (prev_job_info != job_info or |
630 | 6c5a7090 | Michael Hanselmann | (log_entries and prev_log_serial != log_entries[0][0])): |
631 | 6c5a7090 | Michael Hanselmann | break
|
632 | 6c5a7090 | Michael Hanselmann | |
633 | 6c5a7090 | Michael Hanselmann | logging.debug("Waiting again")
|
634 | 6c5a7090 | Michael Hanselmann | |
635 | 6c5a7090 | Michael Hanselmann | # Release the queue lock while waiting
|
636 | 5c735209 | Iustin Pop | job.change.wait(delta_time) |
637 | dfe57c22 | Michael Hanselmann | |
638 | dfe57c22 | Michael Hanselmann | logging.debug("Job %s changed", job_id)
|
639 | dfe57c22 | Michael Hanselmann | |
640 | 6c5a7090 | Michael Hanselmann | return (job_info, log_entries)
|
641 | dfe57c22 | Michael Hanselmann | |
642 | f1da30e6 | Michael Hanselmann | @utils.LockedMethod
|
643 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
644 | 188c5e0a | Michael Hanselmann | def CancelJob(self, job_id): |
645 | 188c5e0a | Michael Hanselmann | """Cancels a job.
|
646 | 188c5e0a | Michael Hanselmann |
|
647 | 188c5e0a | Michael Hanselmann | @type job_id: string
|
648 | 188c5e0a | Michael Hanselmann | @param job_id: Job ID of job to be cancelled.
|
649 | 188c5e0a | Michael Hanselmann |
|
650 | 188c5e0a | Michael Hanselmann | """
|
651 | 188c5e0a | Michael Hanselmann | logging.debug("Cancelling job %s", job_id)
|
652 | 188c5e0a | Michael Hanselmann | |
653 | 85f03e0d | Michael Hanselmann | job = self._LoadJobUnlocked(job_id)
|
654 | 188c5e0a | Michael Hanselmann | if not job: |
655 | 188c5e0a | Michael Hanselmann | logging.debug("Job %s not found", job_id)
|
656 | 188c5e0a | Michael Hanselmann | return
|
657 | 188c5e0a | Michael Hanselmann | |
658 | 85f03e0d | Michael Hanselmann | if job.CalcStatus() not in (constants.JOB_STATUS_QUEUED,): |
659 | 188c5e0a | Michael Hanselmann | logging.debug("Job %s is no longer in the queue", job.id)
|
660 | 188c5e0a | Michael Hanselmann | return
|
661 | 188c5e0a | Michael Hanselmann | |
662 | 85f03e0d | Michael Hanselmann | try:
|
663 | 85f03e0d | Michael Hanselmann | for op in job.ops: |
664 | 85f03e0d | Michael Hanselmann | op.status = constants.OP_STATUS_ERROR |
665 | 85f03e0d | Michael Hanselmann | op.result = "Job cancelled by request"
|
666 | 85f03e0d | Michael Hanselmann | finally:
|
667 | 85f03e0d | Michael Hanselmann | self.UpdateJobUnlocked(job)
|
668 | 188c5e0a | Michael Hanselmann | |
669 | c609f802 | Michael Hanselmann | @utils.LockedMethod
|
670 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
671 | f1da30e6 | Michael Hanselmann | def ArchiveJob(self, job_id): |
672 | c609f802 | Michael Hanselmann | """Archives a job.
|
673 | c609f802 | Michael Hanselmann |
|
674 | c609f802 | Michael Hanselmann | @type job_id: string
|
675 | c609f802 | Michael Hanselmann | @param job_id: Job ID of job to be archived.
|
676 | c609f802 | Michael Hanselmann |
|
677 | c609f802 | Michael Hanselmann | """
|
678 | c609f802 | Michael Hanselmann | logging.debug("Archiving job %s", job_id)
|
679 | c609f802 | Michael Hanselmann | |
680 | c609f802 | Michael Hanselmann | job = self._LoadJobUnlocked(job_id)
|
681 | c609f802 | Michael Hanselmann | if not job: |
682 | c609f802 | Michael Hanselmann | logging.debug("Job %s not found", job_id)
|
683 | c609f802 | Michael Hanselmann | return
|
684 | c609f802 | Michael Hanselmann | |
685 | 85f03e0d | Michael Hanselmann | if job.CalcStatus() not in (constants.JOB_STATUS_CANCELED, |
686 | 85f03e0d | Michael Hanselmann | constants.JOB_STATUS_SUCCESS, |
687 | 85f03e0d | Michael Hanselmann | constants.JOB_STATUS_ERROR): |
688 | 85f03e0d | Michael Hanselmann | logging.debug("Job %s is not yet done", job.id)
|
689 | c609f802 | Michael Hanselmann | return
|
690 | c609f802 | Michael Hanselmann | |
691 | 5685c1a5 | Michael Hanselmann | old = self._GetJobPath(job.id)
|
692 | 5685c1a5 | Michael Hanselmann | new = self._GetArchivedJobPath(job.id)
|
693 | c609f802 | Michael Hanselmann | |
694 | 5685c1a5 | Michael Hanselmann | self._RenameFileUnlocked(old, new)
|
695 | c609f802 | Michael Hanselmann | |
696 | 5685c1a5 | Michael Hanselmann | logging.debug("Successfully archived job %s", job.id)
|
697 | f1da30e6 | Michael Hanselmann | |
698 | 85f03e0d | Michael Hanselmann | def _GetJobInfoUnlocked(self, job, fields): |
699 | e2715f69 | Michael Hanselmann | row = [] |
700 | e2715f69 | Michael Hanselmann | for fname in fields: |
701 | e2715f69 | Michael Hanselmann | if fname == "id": |
702 | e2715f69 | Michael Hanselmann | row.append(job.id) |
703 | e2715f69 | Michael Hanselmann | elif fname == "status": |
704 | 85f03e0d | Michael Hanselmann | row.append(job.CalcStatus()) |
705 | af30b2fd | Michael Hanselmann | elif fname == "ops": |
706 | 85f03e0d | Michael Hanselmann | row.append([op.input.__getstate__() for op in job.ops]) |
707 | af30b2fd | Michael Hanselmann | elif fname == "opresult": |
708 | 85f03e0d | Michael Hanselmann | row.append([op.result for op in job.ops]) |
709 | af30b2fd | Michael Hanselmann | elif fname == "opstatus": |
710 | 85f03e0d | Michael Hanselmann | row.append([op.status for op in job.ops]) |
711 | 5b23c34c | Iustin Pop | elif fname == "oplog": |
712 | 5b23c34c | Iustin Pop | row.append([op.log for op in job.ops]) |
713 | c56ec146 | Iustin Pop | elif fname == "opstart": |
714 | c56ec146 | Iustin Pop | row.append([op.start_timestamp for op in job.ops]) |
715 | c56ec146 | Iustin Pop | elif fname == "opend": |
716 | c56ec146 | Iustin Pop | row.append([op.end_timestamp for op in job.ops]) |
717 | c56ec146 | Iustin Pop | elif fname == "received_ts": |
718 | c56ec146 | Iustin Pop | row.append(job.received_timestamp) |
719 | c56ec146 | Iustin Pop | elif fname == "start_ts": |
720 | c56ec146 | Iustin Pop | row.append(job.start_timestamp) |
721 | c56ec146 | Iustin Pop | elif fname == "end_ts": |
722 | c56ec146 | Iustin Pop | row.append(job.end_timestamp) |
723 | 60dd1473 | Iustin Pop | elif fname == "summary": |
724 | 60dd1473 | Iustin Pop | row.append([op.input.Summary() for op in job.ops]) |
725 | e2715f69 | Michael Hanselmann | else:
|
726 | e2715f69 | Michael Hanselmann | raise errors.OpExecError("Invalid job query field '%s'" % fname) |
727 | e2715f69 | Michael Hanselmann | return row
|
728 | e2715f69 | Michael Hanselmann | |
729 | 85f03e0d | Michael Hanselmann | @utils.LockedMethod
|
730 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
731 | e2715f69 | Michael Hanselmann | def QueryJobs(self, job_ids, fields): |
732 | e2715f69 | Michael Hanselmann | """Returns a list of jobs in queue.
|
733 | e2715f69 | Michael Hanselmann |
|
734 | e2715f69 | Michael Hanselmann | Args:
|
735 | e2715f69 | Michael Hanselmann | - job_ids: Sequence of job identifiers or None for all
|
736 | e2715f69 | Michael Hanselmann | - fields: Names of fields to return
|
737 | e2715f69 | Michael Hanselmann |
|
738 | e2715f69 | Michael Hanselmann | """
|
739 | 85f03e0d | Michael Hanselmann | jobs = [] |
740 | e2715f69 | Michael Hanselmann | |
741 | 85f03e0d | Michael Hanselmann | for job in self._GetJobsUnlocked(job_ids): |
742 | 85f03e0d | Michael Hanselmann | if job is None: |
743 | 85f03e0d | Michael Hanselmann | jobs.append(None)
|
744 | 85f03e0d | Michael Hanselmann | else:
|
745 | 85f03e0d | Michael Hanselmann | jobs.append(self._GetJobInfoUnlocked(job, fields))
|
746 | e2715f69 | Michael Hanselmann | |
747 | 85f03e0d | Michael Hanselmann | return jobs
|
748 | e2715f69 | Michael Hanselmann | |
749 | f1da30e6 | Michael Hanselmann | @utils.LockedMethod
|
750 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
751 | e2715f69 | Michael Hanselmann | def Shutdown(self): |
752 | e2715f69 | Michael Hanselmann | """Stops the job queue.
|
753 | e2715f69 | Michael Hanselmann |
|
754 | e2715f69 | Michael Hanselmann | """
|
755 | e2715f69 | Michael Hanselmann | self._wpool.TerminateWorkers()
|
756 | 85f03e0d | Michael Hanselmann | |
757 | 04ab05ce | Michael Hanselmann | self._queue_lock.Close()
|
758 | 04ab05ce | Michael Hanselmann | self._queue_lock = None |