root / lib / jqueue.py @ b9bddb6b
History | View | Annotate | Download (23.3 kB)
1 | 498ae1cc | Iustin Pop | #
|
---|---|---|---|
2 | 498ae1cc | Iustin Pop | #
|
3 | 498ae1cc | Iustin Pop | |
4 | 5685c1a5 | Michael Hanselmann | # Copyright (C) 2006, 2007, 2008 Google Inc.
|
5 | 498ae1cc | Iustin Pop | #
|
6 | 498ae1cc | Iustin Pop | # This program is free software; you can redistribute it and/or modify
|
7 | 498ae1cc | Iustin Pop | # it under the terms of the GNU General Public License as published by
|
8 | 498ae1cc | Iustin Pop | # the Free Software Foundation; either version 2 of the License, or
|
9 | 498ae1cc | Iustin Pop | # (at your option) any later version.
|
10 | 498ae1cc | Iustin Pop | #
|
11 | 498ae1cc | Iustin Pop | # This program is distributed in the hope that it will be useful, but
|
12 | 498ae1cc | Iustin Pop | # WITHOUT ANY WARRANTY; without even the implied warranty of
|
13 | 498ae1cc | Iustin Pop | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
14 | 498ae1cc | Iustin Pop | # General Public License for more details.
|
15 | 498ae1cc | Iustin Pop | #
|
16 | 498ae1cc | Iustin Pop | # You should have received a copy of the GNU General Public License
|
17 | 498ae1cc | Iustin Pop | # along with this program; if not, write to the Free Software
|
18 | 498ae1cc | Iustin Pop | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
19 | 498ae1cc | Iustin Pop | # 02110-1301, USA.
|
20 | 498ae1cc | Iustin Pop | |
21 | 498ae1cc | Iustin Pop | |
22 | 6c5a7090 | Michael Hanselmann | """Module implementing the job queue handling.
|
23 | 6c5a7090 | Michael Hanselmann |
|
24 | 6c5a7090 | Michael Hanselmann | Locking:
|
25 | 6c5a7090 | Michael Hanselmann | There's a single, large lock in the JobQueue class. It's used by all other
|
26 | 6c5a7090 | Michael Hanselmann | classes in this module.
|
27 | 6c5a7090 | Michael Hanselmann |
|
28 | 6c5a7090 | Michael Hanselmann | """
|
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
|
50 | e2715f69 | Michael Hanselmann | |
51 | 498ae1cc | Iustin Pop | |
52 | 70552c46 | Michael Hanselmann | def TimeStampNow(): |
53 | 70552c46 | Michael Hanselmann | return utils.SplitTime(time.time())
|
54 | 70552c46 | Michael Hanselmann | |
55 | 70552c46 | Michael Hanselmann | |
56 | e2715f69 | Michael Hanselmann | class _QueuedOpCode(object): |
57 | e2715f69 | Michael Hanselmann | """Encasulates an opcode object.
|
58 | e2715f69 | Michael Hanselmann |
|
59 | f1048938 | Iustin Pop | The 'log' attribute holds the execution log and consists of tuples
|
60 | 6c5a7090 | Michael Hanselmann | of the form (log_serial, timestamp, level, message).
|
61 | f1048938 | Iustin Pop |
|
62 | e2715f69 | Michael Hanselmann | """
|
63 | 85f03e0d | Michael Hanselmann | def __init__(self, op): |
64 | 85f03e0d | Michael Hanselmann | self.input = op
|
65 | 85f03e0d | Michael Hanselmann | self.status = constants.OP_STATUS_QUEUED
|
66 | 85f03e0d | Michael Hanselmann | self.result = None |
67 | 85f03e0d | Michael Hanselmann | self.log = []
|
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
|
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"])
|
75 | 85f03e0d | Michael Hanselmann | obj.status = state["status"]
|
76 | 85f03e0d | Michael Hanselmann | obj.result = state["result"]
|
77 | 85f03e0d | Michael Hanselmann | obj.log = state["log"]
|
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
|
81 | f1da30e6 | Michael Hanselmann | |
82 | f1da30e6 | Michael Hanselmann | def Serialize(self): |
83 | 6c5a7090 | Michael Hanselmann | return {
|
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.
|
95 | e2715f69 | Michael Hanselmann |
|
96 | 6c5a7090 | Michael Hanselmann | This is what we use to track the user-submitted jobs. Locking must be taken
|
97 | 6c5a7090 | Michael Hanselmann | care of by users of this class.
|
98 | e2715f69 | Michael Hanselmann |
|
99 | e2715f69 | Michael Hanselmann | """
|
100 | 85f03e0d | Michael Hanselmann | def __init__(self, queue, job_id, ops): |
101 | e2715f69 | Michael Hanselmann | if not ops: |
102 | e2715f69 | Michael Hanselmann | # TODO
|
103 | e2715f69 | Michael Hanselmann | raise Exception("No opcodes") |
104 | e2715f69 | Michael Hanselmann | |
105 | 85f03e0d | Michael Hanselmann | self.queue = queue
|
106 | f1da30e6 | Michael Hanselmann | self.id = job_id
|
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()
|
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
|
115 | 6c5a7090 | Michael Hanselmann | self.change = threading.Condition(self.queue._lock) |
116 | f1da30e6 | Michael Hanselmann | |
117 | f1da30e6 | Michael Hanselmann | @classmethod
|
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"]
|
122 | 85f03e0d | Michael Hanselmann | obj.run_op_index = state["run_op_index"]
|
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
|
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
|
136 | 6c5a7090 | Michael Hanselmann | obj.change = threading.Condition(obj.queue._lock) |
137 | 6c5a7090 | Michael Hanselmann | |
138 | f1da30e6 | Michael Hanselmann | return obj
|
139 | f1da30e6 | Michael Hanselmann | |
140 | f1da30e6 | Michael Hanselmann | def Serialize(self): |
141 | f1da30e6 | Michael Hanselmann | return {
|
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
|
154 | 85f03e0d | Michael Hanselmann | for op in self.ops: |
155 | 85f03e0d | Michael Hanselmann | if op.status == constants.OP_STATUS_SUCCESS:
|
156 | e2715f69 | Michael Hanselmann | continue
|
157 | e2715f69 | Michael Hanselmann | |
158 | e2715f69 | Michael Hanselmann | all_success = False
|
159 | e2715f69 | Michael Hanselmann | |
160 | 85f03e0d | Michael Hanselmann | if op.status == constants.OP_STATUS_QUEUED:
|
161 | e2715f69 | Michael Hanselmann | pass
|
162 | e92376d7 | Iustin Pop | elif op.status == constants.OP_STATUS_WAITLOCK:
|
163 | e92376d7 | Iustin Pop | status = constants.JOB_STATUS_WAITLOCK |
164 | 85f03e0d | Michael Hanselmann | elif op.status == constants.OP_STATUS_RUNNING:
|
165 | e2715f69 | Michael Hanselmann | status = constants.JOB_STATUS_RUNNING |
166 | 85f03e0d | Michael Hanselmann | elif op.status == constants.OP_STATUS_ERROR:
|
167 | f1da30e6 | Michael Hanselmann | status = constants.JOB_STATUS_ERROR |
168 | f1da30e6 | Michael Hanselmann | # The whole job fails if one opcode failed
|
169 | f1da30e6 | Michael Hanselmann | break
|
170 | 85f03e0d | Michael Hanselmann | elif op.status == constants.OP_STATUS_CANCELED:
|
171 | 4cb1d919 | Michael Hanselmann | status = constants.OP_STATUS_CANCELED |
172 | 4cb1d919 | Michael Hanselmann | break
|
173 | e2715f69 | Michael Hanselmann | |
174 | e2715f69 | Michael Hanselmann | if all_success:
|
175 | e2715f69 | Michael Hanselmann | status = constants.JOB_STATUS_SUCCESS |
176 | e2715f69 | Michael Hanselmann | |
177 | e2715f69 | Michael Hanselmann | return status
|
178 | e2715f69 | Michael Hanselmann | |
179 | 6c5a7090 | Michael Hanselmann | def GetLogEntries(self, newer_than): |
180 | 6c5a7090 | Michael Hanselmann | if newer_than is None: |
181 | 6c5a7090 | Michael Hanselmann | serial = -1
|
182 | 6c5a7090 | Michael Hanselmann | else:
|
183 | 6c5a7090 | Michael Hanselmann | serial = newer_than |
184 | 6c5a7090 | Michael Hanselmann | |
185 | 6c5a7090 | Michael Hanselmann | entries = [] |
186 | 6c5a7090 | Michael Hanselmann | for op in self.ops: |
187 | 6c5a7090 | Michael Hanselmann | entries.extend(filter(lambda entry: entry[0] > newer_than, op.log)) |
188 | 6c5a7090 | Michael Hanselmann | |
189 | 6c5a7090 | Michael Hanselmann | return entries
|
190 | 6c5a7090 | Michael Hanselmann | |
191 | f1048938 | Iustin Pop | |
192 | 85f03e0d | Michael Hanselmann | class _JobQueueWorker(workerpool.BaseWorker): |
193 | e92376d7 | Iustin Pop | def _NotifyStart(self): |
194 | e92376d7 | Iustin Pop | """Mark the opcode as running, not lock-waiting.
|
195 | e92376d7 | Iustin Pop |
|
196 | e92376d7 | Iustin Pop | This is called from the mcpu code as a notifier function, when the
|
197 | e92376d7 | Iustin Pop | LU is finally about to start the Exec() method. Of course, to have
|
198 | e92376d7 | Iustin Pop | end-user visible results, the opcode must be initially (before
|
199 | e92376d7 | Iustin Pop | calling into Processor.ExecOpCode) set to OP_STATUS_WAITLOCK.
|
200 | e92376d7 | Iustin Pop |
|
201 | e92376d7 | Iustin Pop | """
|
202 | e92376d7 | Iustin Pop | assert self.queue, "Queue attribute is missing" |
203 | e92376d7 | Iustin Pop | assert self.opcode, "Opcode attribute is missing" |
204 | e92376d7 | Iustin Pop | |
205 | e92376d7 | Iustin Pop | self.queue.acquire()
|
206 | e92376d7 | Iustin Pop | try:
|
207 | e92376d7 | Iustin Pop | self.opcode.status = constants.OP_STATUS_RUNNING
|
208 | e92376d7 | Iustin Pop | finally:
|
209 | e92376d7 | Iustin Pop | self.queue.release()
|
210 | e92376d7 | Iustin Pop | |
211 | 85f03e0d | Michael Hanselmann | def RunTask(self, job): |
212 | e2715f69 | Michael Hanselmann | """Job executor.
|
213 | e2715f69 | Michael Hanselmann |
|
214 | 6c5a7090 | Michael Hanselmann | This functions processes a job. It is closely tied to the _QueuedJob and
|
215 | 6c5a7090 | Michael Hanselmann | _QueuedOpCode classes.
|
216 | e2715f69 | Michael Hanselmann |
|
217 | e2715f69 | Michael Hanselmann | """
|
218 | e2715f69 | Michael Hanselmann | logging.debug("Worker %s processing job %s",
|
219 | e2715f69 | Michael Hanselmann | self.worker_id, job.id)
|
220 | 5bdce580 | Michael Hanselmann | proc = mcpu.Processor(self.pool.queue.context)
|
221 | e92376d7 | Iustin Pop | self.queue = queue = job.queue
|
222 | e2715f69 | Michael Hanselmann | try:
|
223 | 85f03e0d | Michael Hanselmann | try:
|
224 | 85f03e0d | Michael Hanselmann | count = len(job.ops)
|
225 | 85f03e0d | Michael Hanselmann | for idx, op in enumerate(job.ops): |
226 | 85f03e0d | Michael Hanselmann | try:
|
227 | 85f03e0d | Michael Hanselmann | logging.debug("Op %s/%s: Starting %s", idx + 1, count, op) |
228 | 85f03e0d | Michael Hanselmann | |
229 | 85f03e0d | Michael Hanselmann | queue.acquire() |
230 | 85f03e0d | Michael Hanselmann | try:
|
231 | 85f03e0d | Michael Hanselmann | job.run_op_index = idx |
232 | e92376d7 | Iustin Pop | op.status = constants.OP_STATUS_WAITLOCK |
233 | 85f03e0d | Michael Hanselmann | op.result = None
|
234 | 70552c46 | Michael Hanselmann | op.start_timestamp = TimeStampNow() |
235 | c56ec146 | Iustin Pop | if idx == 0: # first opcode |
236 | c56ec146 | Iustin Pop | job.start_timestamp = op.start_timestamp |
237 | 85f03e0d | Michael Hanselmann | queue.UpdateJobUnlocked(job) |
238 | 85f03e0d | Michael Hanselmann | |
239 | 38206f3c | Iustin Pop | input_opcode = op.input |
240 | 85f03e0d | Michael Hanselmann | finally:
|
241 | 85f03e0d | Michael Hanselmann | queue.release() |
242 | 85f03e0d | Michael Hanselmann | |
243 | dfe57c22 | Michael Hanselmann | def _Log(*args): |
244 | 6c5a7090 | Michael Hanselmann | """Append a log entry.
|
245 | 6c5a7090 | Michael Hanselmann |
|
246 | 6c5a7090 | Michael Hanselmann | """
|
247 | 6c5a7090 | Michael Hanselmann | assert len(args) < 3 |
248 | 6c5a7090 | Michael Hanselmann | |
249 | 6c5a7090 | Michael Hanselmann | if len(args) == 1: |
250 | 6c5a7090 | Michael Hanselmann | log_type = constants.ELOG_MESSAGE |
251 | 6c5a7090 | Michael Hanselmann | log_msg = args[0]
|
252 | 6c5a7090 | Michael Hanselmann | else:
|
253 | 6c5a7090 | Michael Hanselmann | log_type, log_msg = args |
254 | 6c5a7090 | Michael Hanselmann | |
255 | 6c5a7090 | Michael Hanselmann | # The time is split to make serialization easier and not lose
|
256 | 6c5a7090 | Michael Hanselmann | # precision.
|
257 | 6c5a7090 | Michael Hanselmann | timestamp = utils.SplitTime(time.time()) |
258 | dfe57c22 | Michael Hanselmann | |
259 | 6c5a7090 | Michael Hanselmann | queue.acquire() |
260 | dfe57c22 | Michael Hanselmann | try:
|
261 | 6c5a7090 | Michael Hanselmann | job.log_serial += 1
|
262 | 6c5a7090 | Michael Hanselmann | op.log.append((job.log_serial, timestamp, log_type, log_msg)) |
263 | 6c5a7090 | Michael Hanselmann | |
264 | dfe57c22 | Michael Hanselmann | job.change.notifyAll() |
265 | dfe57c22 | Michael Hanselmann | finally:
|
266 | 6c5a7090 | Michael Hanselmann | queue.release() |
267 | dfe57c22 | Michael Hanselmann | |
268 | 6c5a7090 | Michael Hanselmann | # Make sure not to hold lock while _Log is called
|
269 | e92376d7 | Iustin Pop | self.opcode = op
|
270 | e92376d7 | Iustin Pop | result = proc.ExecOpCode(input_opcode, _Log, self._NotifyStart)
|
271 | 85f03e0d | Michael Hanselmann | |
272 | 85f03e0d | Michael Hanselmann | queue.acquire() |
273 | 85f03e0d | Michael Hanselmann | try:
|
274 | 85f03e0d | Michael Hanselmann | op.status = constants.OP_STATUS_SUCCESS |
275 | 85f03e0d | Michael Hanselmann | op.result = result |
276 | 70552c46 | Michael Hanselmann | op.end_timestamp = TimeStampNow() |
277 | 85f03e0d | Michael Hanselmann | queue.UpdateJobUnlocked(job) |
278 | 85f03e0d | Michael Hanselmann | finally:
|
279 | 85f03e0d | Michael Hanselmann | queue.release() |
280 | 85f03e0d | Michael Hanselmann | |
281 | 85f03e0d | Michael Hanselmann | logging.debug("Op %s/%s: Successfully finished %s",
|
282 | 85f03e0d | Michael Hanselmann | idx + 1, count, op)
|
283 | 85f03e0d | Michael Hanselmann | except Exception, err: |
284 | 85f03e0d | Michael Hanselmann | queue.acquire() |
285 | 85f03e0d | Michael Hanselmann | try:
|
286 | 85f03e0d | Michael Hanselmann | try:
|
287 | 85f03e0d | Michael Hanselmann | op.status = constants.OP_STATUS_ERROR |
288 | 85f03e0d | Michael Hanselmann | op.result = str(err)
|
289 | 70552c46 | Michael Hanselmann | op.end_timestamp = TimeStampNow() |
290 | 85f03e0d | Michael Hanselmann | logging.debug("Op %s/%s: Error in %s", idx + 1, count, op) |
291 | 85f03e0d | Michael Hanselmann | finally:
|
292 | 85f03e0d | Michael Hanselmann | queue.UpdateJobUnlocked(job) |
293 | 85f03e0d | Michael Hanselmann | finally:
|
294 | 85f03e0d | Michael Hanselmann | queue.release() |
295 | 85f03e0d | Michael Hanselmann | raise
|
296 | 85f03e0d | Michael Hanselmann | |
297 | 85f03e0d | Michael Hanselmann | except errors.GenericError, err:
|
298 | 85f03e0d | Michael Hanselmann | logging.exception("Ganeti exception")
|
299 | 85f03e0d | Michael Hanselmann | except:
|
300 | 85f03e0d | Michael Hanselmann | logging.exception("Unhandled exception")
|
301 | e2715f69 | Michael Hanselmann | finally:
|
302 | 85f03e0d | Michael Hanselmann | queue.acquire() |
303 | 85f03e0d | Michael Hanselmann | try:
|
304 | 65548ed5 | Michael Hanselmann | try:
|
305 | 65548ed5 | Michael Hanselmann | job.run_op_idx = -1
|
306 | c56ec146 | Iustin Pop | job.end_timestamp = TimeStampNow() |
307 | 65548ed5 | Michael Hanselmann | queue.UpdateJobUnlocked(job) |
308 | 65548ed5 | Michael Hanselmann | finally:
|
309 | 65548ed5 | Michael Hanselmann | job_id = job.id |
310 | 65548ed5 | Michael Hanselmann | status = job.CalcStatus() |
311 | 85f03e0d | Michael Hanselmann | finally:
|
312 | 85f03e0d | Michael Hanselmann | queue.release() |
313 | e2715f69 | Michael Hanselmann | logging.debug("Worker %s finished job %s, status = %s",
|
314 | 85f03e0d | Michael Hanselmann | self.worker_id, job_id, status)
|
315 | e2715f69 | Michael Hanselmann | |
316 | e2715f69 | Michael Hanselmann | |
317 | e2715f69 | Michael Hanselmann | class _JobQueueWorkerPool(workerpool.WorkerPool): |
318 | 5bdce580 | Michael Hanselmann | def __init__(self, queue): |
319 | e2715f69 | Michael Hanselmann | super(_JobQueueWorkerPool, self).__init__(JOBQUEUE_THREADS, |
320 | e2715f69 | Michael Hanselmann | _JobQueueWorker) |
321 | 5bdce580 | Michael Hanselmann | self.queue = queue
|
322 | e2715f69 | Michael Hanselmann | |
323 | e2715f69 | Michael Hanselmann | |
324 | 85f03e0d | Michael Hanselmann | class JobQueue(object): |
325 | bac5ffc3 | Oleksiy Mishchenko | _RE_JOB_FILE = re.compile(r"^job-(%s)$" % constants.JOB_ID_TEMPLATE)
|
326 | f1da30e6 | Michael Hanselmann | |
327 | db37da70 | Michael Hanselmann | def _RequireOpenQueue(fn): |
328 | db37da70 | Michael Hanselmann | """Decorator for "public" functions.
|
329 | db37da70 | Michael Hanselmann |
|
330 | db37da70 | Michael Hanselmann | This function should be used for all "public" functions. That is, functions
|
331 | db37da70 | Michael Hanselmann | usually called from other classes.
|
332 | db37da70 | Michael Hanselmann |
|
333 | db37da70 | Michael Hanselmann | Important: Use this decorator only after utils.LockedMethod!
|
334 | db37da70 | Michael Hanselmann |
|
335 | db37da70 | Michael Hanselmann | Example:
|
336 | db37da70 | Michael Hanselmann | @utils.LockedMethod
|
337 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
338 | db37da70 | Michael Hanselmann | def Example(self):
|
339 | db37da70 | Michael Hanselmann | pass
|
340 | db37da70 | Michael Hanselmann |
|
341 | db37da70 | Michael Hanselmann | """
|
342 | db37da70 | Michael Hanselmann | def wrapper(self, *args, **kwargs): |
343 | 04ab05ce | Michael Hanselmann | assert self._queue_lock is not None, "Queue should be open" |
344 | db37da70 | Michael Hanselmann | return fn(self, *args, **kwargs) |
345 | db37da70 | Michael Hanselmann | return wrapper
|
346 | db37da70 | Michael Hanselmann | |
347 | 85f03e0d | Michael Hanselmann | def __init__(self, context): |
348 | 5bdce580 | Michael Hanselmann | self.context = context
|
349 | 5685c1a5 | Michael Hanselmann | self._memcache = weakref.WeakValueDictionary()
|
350 | c3f0a12f | Iustin Pop | self._my_hostname = utils.HostInfo().name
|
351 | f1da30e6 | Michael Hanselmann | |
352 | 85f03e0d | Michael Hanselmann | # Locking
|
353 | 85f03e0d | Michael Hanselmann | self._lock = threading.Lock()
|
354 | 85f03e0d | Michael Hanselmann | self.acquire = self._lock.acquire |
355 | 85f03e0d | Michael Hanselmann | self.release = self._lock.release |
356 | 85f03e0d | Michael Hanselmann | |
357 | 04ab05ce | Michael Hanselmann | # Initialize
|
358 | 5d6fb8eb | Michael Hanselmann | self._queue_lock = jstore.InitAndVerifyQueue(must_lock=True) |
359 | f1da30e6 | Michael Hanselmann | |
360 | 04ab05ce | Michael Hanselmann | # Read serial file
|
361 | 04ab05ce | Michael Hanselmann | self._last_serial = jstore.ReadSerial()
|
362 | 04ab05ce | Michael Hanselmann | assert self._last_serial is not None, ("Serial file was modified between" |
363 | 04ab05ce | Michael Hanselmann | " check in jstore and here")
|
364 | c4beba1c | Iustin Pop | |
365 | 23752136 | Michael Hanselmann | # Get initial list of nodes
|
366 | 8e00939c | Michael Hanselmann | self._nodes = set(self.context.cfg.GetNodeList()) |
367 | 8e00939c | Michael Hanselmann | |
368 | 8e00939c | Michael Hanselmann | # Remove master node
|
369 | 8e00939c | Michael Hanselmann | try:
|
370 | 8e00939c | Michael Hanselmann | self._nodes.remove(self._my_hostname) |
371 | 8e00939c | Michael Hanselmann | except ValueError: |
372 | 8e00939c | Michael Hanselmann | pass
|
373 | 23752136 | Michael Hanselmann | |
374 | 23752136 | Michael Hanselmann | # TODO: Check consistency across nodes
|
375 | 23752136 | Michael Hanselmann | |
376 | 85f03e0d | Michael Hanselmann | # Setup worker pool
|
377 | 5bdce580 | Michael Hanselmann | self._wpool = _JobQueueWorkerPool(self) |
378 | 85f03e0d | Michael Hanselmann | |
379 | 85f03e0d | Michael Hanselmann | # We need to lock here because WorkerPool.AddTask() may start a job while
|
380 | 85f03e0d | Michael Hanselmann | # we're still doing our work.
|
381 | 85f03e0d | Michael Hanselmann | self.acquire()
|
382 | 85f03e0d | Michael Hanselmann | try:
|
383 | 85f03e0d | Michael Hanselmann | for job in self._GetJobsUnlocked(None): |
384 | 85f03e0d | Michael Hanselmann | status = job.CalcStatus() |
385 | 85f03e0d | Michael Hanselmann | |
386 | 85f03e0d | Michael Hanselmann | if status in (constants.JOB_STATUS_QUEUED, ): |
387 | 85f03e0d | Michael Hanselmann | self._wpool.AddTask(job)
|
388 | 85f03e0d | Michael Hanselmann | |
389 | e92376d7 | Iustin Pop | elif status in (constants.JOB_STATUS_RUNNING, |
390 | e92376d7 | Iustin Pop | constants.JOB_STATUS_WAITLOCK): |
391 | 85f03e0d | Michael Hanselmann | logging.warning("Unfinished job %s found: %s", job.id, job)
|
392 | 85f03e0d | Michael Hanselmann | try:
|
393 | 85f03e0d | Michael Hanselmann | for op in job.ops: |
394 | 85f03e0d | Michael Hanselmann | op.status = constants.OP_STATUS_ERROR |
395 | 85f03e0d | Michael Hanselmann | op.result = "Unclean master daemon shutdown"
|
396 | 85f03e0d | Michael Hanselmann | finally:
|
397 | 85f03e0d | Michael Hanselmann | self.UpdateJobUnlocked(job)
|
398 | 85f03e0d | Michael Hanselmann | finally:
|
399 | 85f03e0d | Michael Hanselmann | self.release()
|
400 | 85f03e0d | Michael Hanselmann | |
401 | d2e03a33 | Michael Hanselmann | @utils.LockedMethod
|
402 | d2e03a33 | Michael Hanselmann | @_RequireOpenQueue
|
403 | d2e03a33 | Michael Hanselmann | def AddNode(self, node_name): |
404 | d2e03a33 | Michael Hanselmann | assert node_name != self._my_hostname |
405 | 23752136 | Michael Hanselmann | |
406 | 9f774ee8 | Michael Hanselmann | # Clean queue directory on added node
|
407 | 9f774ee8 | Michael Hanselmann | rpc.call_jobqueue_purge(node_name) |
408 | 23752136 | Michael Hanselmann | |
409 | d2e03a33 | Michael Hanselmann | # Upload the whole queue excluding archived jobs
|
410 | d2e03a33 | Michael Hanselmann | files = [self._GetJobPath(job_id) for job_id in self._GetJobIDsUnlocked()] |
411 | 23752136 | Michael Hanselmann | |
412 | d2e03a33 | Michael Hanselmann | # Upload current serial file
|
413 | d2e03a33 | Michael Hanselmann | files.append(constants.JOB_QUEUE_SERIAL_FILE) |
414 | d2e03a33 | Michael Hanselmann | |
415 | d2e03a33 | Michael Hanselmann | for file_name in files: |
416 | 9f774ee8 | Michael Hanselmann | # Read file content
|
417 | 9f774ee8 | Michael Hanselmann | fd = open(file_name, "r") |
418 | 9f774ee8 | Michael Hanselmann | try:
|
419 | 9f774ee8 | Michael Hanselmann | content = fd.read() |
420 | 9f774ee8 | Michael Hanselmann | finally:
|
421 | 9f774ee8 | Michael Hanselmann | fd.close() |
422 | 9f774ee8 | Michael Hanselmann | |
423 | 9f774ee8 | Michael Hanselmann | result = rpc.call_jobqueue_update([node_name], file_name, content) |
424 | d2e03a33 | Michael Hanselmann | if not result[node_name]: |
425 | d2e03a33 | Michael Hanselmann | logging.error("Failed to upload %s to %s", file_name, node_name)
|
426 | d2e03a33 | Michael Hanselmann | |
427 | d2e03a33 | Michael Hanselmann | self._nodes.add(node_name)
|
428 | d2e03a33 | Michael Hanselmann | |
429 | d2e03a33 | Michael Hanselmann | @utils.LockedMethod
|
430 | d2e03a33 | Michael Hanselmann | @_RequireOpenQueue
|
431 | d2e03a33 | Michael Hanselmann | def RemoveNode(self, node_name): |
432 | 23752136 | Michael Hanselmann | try:
|
433 | d2e03a33 | Michael Hanselmann | # The queue is removed by the "leave node" RPC call.
|
434 | d2e03a33 | Michael Hanselmann | self._nodes.remove(node_name)
|
435 | d2e03a33 | Michael Hanselmann | except KeyError: |
436 | 23752136 | Michael Hanselmann | pass
|
437 | 23752136 | Michael Hanselmann | |
438 | e74798c1 | Michael Hanselmann | def _CheckRpcResult(self, result, nodes, failmsg): |
439 | e74798c1 | Michael Hanselmann | failed = [] |
440 | e74798c1 | Michael Hanselmann | success = [] |
441 | e74798c1 | Michael Hanselmann | |
442 | e74798c1 | Michael Hanselmann | for node in nodes: |
443 | e74798c1 | Michael Hanselmann | if result[node]:
|
444 | e74798c1 | Michael Hanselmann | success.append(node) |
445 | e74798c1 | Michael Hanselmann | else:
|
446 | e74798c1 | Michael Hanselmann | failed.append(node) |
447 | e74798c1 | Michael Hanselmann | |
448 | e74798c1 | Michael Hanselmann | if failed:
|
449 | e74798c1 | Michael Hanselmann | logging.error("%s failed on %s", failmsg, ", ".join(failed)) |
450 | e74798c1 | Michael Hanselmann | |
451 | e74798c1 | Michael Hanselmann | # +1 for the master node
|
452 | e74798c1 | Michael Hanselmann | if (len(success) + 1) < len(failed): |
453 | e74798c1 | Michael Hanselmann | # TODO: Handle failing nodes
|
454 | e74798c1 | Michael Hanselmann | logging.error("More than half of the nodes failed")
|
455 | e74798c1 | Michael Hanselmann | |
456 | 8e00939c | Michael Hanselmann | def _WriteAndReplicateFileUnlocked(self, file_name, data): |
457 | 8e00939c | Michael Hanselmann | """Writes a file locally and then replicates it to all nodes.
|
458 | 8e00939c | Michael Hanselmann |
|
459 | 8e00939c | Michael Hanselmann | """
|
460 | 8e00939c | Michael Hanselmann | utils.WriteFile(file_name, data=data) |
461 | 8e00939c | Michael Hanselmann | |
462 | 9f774ee8 | Michael Hanselmann | result = rpc.call_jobqueue_update(self._nodes, file_name, data)
|
463 | e74798c1 | Michael Hanselmann | self._CheckRpcResult(result, self._nodes, |
464 | e74798c1 | Michael Hanselmann | "Updating %s" % file_name)
|
465 | 23752136 | Michael Hanselmann | |
466 | abc1f2ce | Michael Hanselmann | def _RenameFileUnlocked(self, old, new): |
467 | abc1f2ce | Michael Hanselmann | os.rename(old, new) |
468 | abc1f2ce | Michael Hanselmann | |
469 | abc1f2ce | Michael Hanselmann | result = rpc.call_jobqueue_rename(self._nodes, old, new)
|
470 | e74798c1 | Michael Hanselmann | self._CheckRpcResult(result, self._nodes, |
471 | e74798c1 | Michael Hanselmann | "Moving %s to %s" % (old, new))
|
472 | abc1f2ce | Michael Hanselmann | |
473 | 85f03e0d | Michael Hanselmann | def _FormatJobID(self, job_id): |
474 | 85f03e0d | Michael Hanselmann | if not isinstance(job_id, (int, long)): |
475 | 85f03e0d | Michael Hanselmann | raise errors.ProgrammerError("Job ID '%s' not numeric" % job_id) |
476 | 85f03e0d | Michael Hanselmann | if job_id < 0: |
477 | 85f03e0d | Michael Hanselmann | raise errors.ProgrammerError("Job ID %s is negative" % job_id) |
478 | 85f03e0d | Michael Hanselmann | |
479 | 85f03e0d | Michael Hanselmann | return str(job_id) |
480 | 85f03e0d | Michael Hanselmann | |
481 | 4c848b18 | Michael Hanselmann | def _NewSerialUnlocked(self): |
482 | f1da30e6 | Michael Hanselmann | """Generates a new job identifier.
|
483 | f1da30e6 | Michael Hanselmann |
|
484 | f1da30e6 | Michael Hanselmann | Job identifiers are unique during the lifetime of a cluster.
|
485 | f1da30e6 | Michael Hanselmann |
|
486 | f1da30e6 | Michael Hanselmann | Returns: A string representing the job identifier.
|
487 | f1da30e6 | Michael Hanselmann |
|
488 | f1da30e6 | Michael Hanselmann | """
|
489 | f1da30e6 | Michael Hanselmann | # New number
|
490 | f1da30e6 | Michael Hanselmann | serial = self._last_serial + 1 |
491 | f1da30e6 | Michael Hanselmann | |
492 | f1da30e6 | Michael Hanselmann | # Write to file
|
493 | 23752136 | Michael Hanselmann | self._WriteAndReplicateFileUnlocked(constants.JOB_QUEUE_SERIAL_FILE,
|
494 | 23752136 | Michael Hanselmann | "%s\n" % serial)
|
495 | f1da30e6 | Michael Hanselmann | |
496 | f1da30e6 | Michael Hanselmann | # Keep it only if we were able to write the file
|
497 | f1da30e6 | Michael Hanselmann | self._last_serial = serial
|
498 | f1da30e6 | Michael Hanselmann | |
499 | 85f03e0d | Michael Hanselmann | return self._FormatJobID(serial) |
500 | f1da30e6 | Michael Hanselmann | |
501 | 85f03e0d | Michael Hanselmann | @staticmethod
|
502 | 85f03e0d | Michael Hanselmann | def _GetJobPath(job_id): |
503 | f1da30e6 | Michael Hanselmann | return os.path.join(constants.QUEUE_DIR, "job-%s" % job_id) |
504 | f1da30e6 | Michael Hanselmann | |
505 | 85f03e0d | Michael Hanselmann | @staticmethod
|
506 | 85f03e0d | Michael Hanselmann | def _GetArchivedJobPath(job_id): |
507 | 0cb94105 | Michael Hanselmann | return os.path.join(constants.JOB_QUEUE_ARCHIVE_DIR, "job-%s" % job_id) |
508 | 0cb94105 | Michael Hanselmann | |
509 | 85f03e0d | Michael Hanselmann | @classmethod
|
510 | 85f03e0d | Michael Hanselmann | def _ExtractJobID(cls, name): |
511 | 85f03e0d | Michael Hanselmann | m = cls._RE_JOB_FILE.match(name) |
512 | fae737ac | Michael Hanselmann | if m:
|
513 | fae737ac | Michael Hanselmann | return m.group(1) |
514 | fae737ac | Michael Hanselmann | else:
|
515 | fae737ac | Michael Hanselmann | return None |
516 | fae737ac | Michael Hanselmann | |
517 | 911a495b | Iustin Pop | def _GetJobIDsUnlocked(self, archived=False): |
518 | 911a495b | Iustin Pop | """Return all known job IDs.
|
519 | 911a495b | Iustin Pop |
|
520 | 911a495b | Iustin Pop | If the parameter archived is True, archived jobs IDs will be
|
521 | 911a495b | Iustin Pop | included. Currently this argument is unused.
|
522 | 911a495b | Iustin Pop |
|
523 | ac0930b9 | Iustin Pop | The method only looks at disk because it's a requirement that all
|
524 | ac0930b9 | Iustin Pop | jobs are present on disk (so in the _memcache we don't have any
|
525 | ac0930b9 | Iustin Pop | extra IDs).
|
526 | ac0930b9 | Iustin Pop |
|
527 | 911a495b | Iustin Pop | """
|
528 | fae737ac | Michael Hanselmann | jlist = [self._ExtractJobID(name) for name in self._ListJobFiles()] |
529 | 3b87986e | Iustin Pop | jlist = utils.NiceSort(jlist) |
530 | f0d874fe | Iustin Pop | return jlist
|
531 | 911a495b | Iustin Pop | |
532 | f1da30e6 | Michael Hanselmann | def _ListJobFiles(self): |
533 | f1da30e6 | Michael Hanselmann | return [name for name in utils.ListVisibleFiles(constants.QUEUE_DIR) |
534 | f1da30e6 | Michael Hanselmann | if self._RE_JOB_FILE.match(name)] |
535 | f1da30e6 | Michael Hanselmann | |
536 | 911a495b | Iustin Pop | def _LoadJobUnlocked(self, job_id): |
537 | 5685c1a5 | Michael Hanselmann | job = self._memcache.get(job_id, None) |
538 | 5685c1a5 | Michael Hanselmann | if job:
|
539 | 205d71fd | Michael Hanselmann | logging.debug("Found job %s in memcache", job_id)
|
540 | 5685c1a5 | Michael Hanselmann | return job
|
541 | ac0930b9 | Iustin Pop | |
542 | 911a495b | Iustin Pop | filepath = self._GetJobPath(job_id)
|
543 | f1da30e6 | Michael Hanselmann | logging.debug("Loading job from %s", filepath)
|
544 | f1da30e6 | Michael Hanselmann | try:
|
545 | f1da30e6 | Michael Hanselmann | fd = open(filepath, "r") |
546 | f1da30e6 | Michael Hanselmann | except IOError, err: |
547 | f1da30e6 | Michael Hanselmann | if err.errno in (errno.ENOENT, ): |
548 | f1da30e6 | Michael Hanselmann | return None |
549 | f1da30e6 | Michael Hanselmann | raise
|
550 | f1da30e6 | Michael Hanselmann | try:
|
551 | f1da30e6 | Michael Hanselmann | data = serializer.LoadJson(fd.read()) |
552 | f1da30e6 | Michael Hanselmann | finally:
|
553 | f1da30e6 | Michael Hanselmann | fd.close() |
554 | f1da30e6 | Michael Hanselmann | |
555 | ac0930b9 | Iustin Pop | job = _QueuedJob.Restore(self, data)
|
556 | ac0930b9 | Iustin Pop | self._memcache[job_id] = job
|
557 | 205d71fd | Michael Hanselmann | logging.debug("Added job %s to the cache", job_id)
|
558 | ac0930b9 | Iustin Pop | return job
|
559 | f1da30e6 | Michael Hanselmann | |
560 | f1da30e6 | Michael Hanselmann | def _GetJobsUnlocked(self, job_ids): |
561 | 911a495b | Iustin Pop | if not job_ids: |
562 | 911a495b | Iustin Pop | job_ids = self._GetJobIDsUnlocked()
|
563 | f1da30e6 | Michael Hanselmann | |
564 | 911a495b | Iustin Pop | return [self._LoadJobUnlocked(job_id) for job_id in job_ids] |
565 | f1da30e6 | Michael Hanselmann | |
566 | f1da30e6 | Michael Hanselmann | @utils.LockedMethod
|
567 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
568 | 4c848b18 | Michael Hanselmann | def SubmitJob(self, ops): |
569 | 85f03e0d | Michael Hanselmann | """Create and store a new job.
|
570 | f1da30e6 | Michael Hanselmann |
|
571 | 85f03e0d | Michael Hanselmann | This enters the job into our job queue and also puts it on the new
|
572 | 85f03e0d | Michael Hanselmann | queue, in order for it to be picked up by the queue processors.
|
573 | c3f0a12f | Iustin Pop |
|
574 | c3f0a12f | Iustin Pop | @type ops: list
|
575 | 205d71fd | Michael Hanselmann | @param ops: The list of OpCodes that will become the new job.
|
576 | c3f0a12f | Iustin Pop |
|
577 | c3f0a12f | Iustin Pop | """
|
578 | f1da30e6 | Michael Hanselmann | # Get job identifier
|
579 | 4c848b18 | Michael Hanselmann | job_id = self._NewSerialUnlocked()
|
580 | f1da30e6 | Michael Hanselmann | job = _QueuedJob(self, job_id, ops)
|
581 | f1da30e6 | Michael Hanselmann | |
582 | f1da30e6 | Michael Hanselmann | # Write to disk
|
583 | 85f03e0d | Michael Hanselmann | self.UpdateJobUnlocked(job)
|
584 | f1da30e6 | Michael Hanselmann | |
585 | 5685c1a5 | Michael Hanselmann | logging.debug("Adding new job %s to the cache", job_id)
|
586 | ac0930b9 | Iustin Pop | self._memcache[job_id] = job
|
587 | ac0930b9 | Iustin Pop | |
588 | 85f03e0d | Michael Hanselmann | # Add to worker pool
|
589 | 85f03e0d | Michael Hanselmann | self._wpool.AddTask(job)
|
590 | 85f03e0d | Michael Hanselmann | |
591 | 85f03e0d | Michael Hanselmann | return job.id
|
592 | f1da30e6 | Michael Hanselmann | |
593 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
594 | 85f03e0d | Michael Hanselmann | def UpdateJobUnlocked(self, job): |
595 | f1da30e6 | Michael Hanselmann | filename = self._GetJobPath(job.id)
|
596 | 23752136 | Michael Hanselmann | data = serializer.DumpJson(job.Serialize(), indent=False)
|
597 | f1da30e6 | Michael Hanselmann | logging.debug("Writing job %s to %s", job.id, filename)
|
598 | 23752136 | Michael Hanselmann | self._WriteAndReplicateFileUnlocked(filename, data)
|
599 | ac0930b9 | Iustin Pop | |
600 | dfe57c22 | Michael Hanselmann | # Notify waiters about potential changes
|
601 | 6c5a7090 | Michael Hanselmann | job.change.notifyAll() |
602 | dfe57c22 | Michael Hanselmann | |
603 | 6c5a7090 | Michael Hanselmann | @utils.LockedMethod
|
604 | dfe57c22 | Michael Hanselmann | @_RequireOpenQueue
|
605 | 5c735209 | Iustin Pop | def WaitForJobChanges(self, job_id, fields, prev_job_info, prev_log_serial, |
606 | 5c735209 | Iustin Pop | timeout): |
607 | 6c5a7090 | Michael Hanselmann | """Waits for changes in a job.
|
608 | 6c5a7090 | Michael Hanselmann |
|
609 | 6c5a7090 | Michael Hanselmann | @type job_id: string
|
610 | 6c5a7090 | Michael Hanselmann | @param job_id: Job identifier
|
611 | 6c5a7090 | Michael Hanselmann | @type fields: list of strings
|
612 | 6c5a7090 | Michael Hanselmann | @param fields: Which fields to check for changes
|
613 | 6c5a7090 | Michael Hanselmann | @type prev_job_info: list or None
|
614 | 6c5a7090 | Michael Hanselmann | @param prev_job_info: Last job information returned
|
615 | 6c5a7090 | Michael Hanselmann | @type prev_log_serial: int
|
616 | 6c5a7090 | Michael Hanselmann | @param prev_log_serial: Last job message serial number
|
617 | 5c735209 | Iustin Pop | @type timeout: float
|
618 | 5c735209 | Iustin Pop | @param timeout: maximum time to wait
|
619 | 6c5a7090 | Michael Hanselmann |
|
620 | 6c5a7090 | Michael Hanselmann | """
|
621 | dfe57c22 | Michael Hanselmann | logging.debug("Waiting for changes in job %s", job_id)
|
622 | 5c735209 | Iustin Pop | end_time = time.time() + timeout |
623 | dfe57c22 | Michael Hanselmann | while True: |
624 | 5c735209 | Iustin Pop | delta_time = end_time - time.time() |
625 | 5c735209 | Iustin Pop | if delta_time < 0: |
626 | 5c735209 | Iustin Pop | return constants.JOB_NOTCHANGED
|
627 | 5c735209 | Iustin Pop | |
628 | 6c5a7090 | Michael Hanselmann | job = self._LoadJobUnlocked(job_id)
|
629 | 6c5a7090 | Michael Hanselmann | if not job: |
630 | 6c5a7090 | Michael Hanselmann | logging.debug("Job %s not found", job_id)
|
631 | 6c5a7090 | Michael Hanselmann | break
|
632 | dfe57c22 | Michael Hanselmann | |
633 | 6c5a7090 | Michael Hanselmann | status = job.CalcStatus() |
634 | 6c5a7090 | Michael Hanselmann | job_info = self._GetJobInfoUnlocked(job, fields)
|
635 | 6c5a7090 | Michael Hanselmann | log_entries = job.GetLogEntries(prev_log_serial) |
636 | dfe57c22 | Michael Hanselmann | |
637 | dfe57c22 | Michael Hanselmann | # Serializing and deserializing data can cause type changes (e.g. from
|
638 | dfe57c22 | Michael Hanselmann | # tuple to list) or precision loss. We're doing it here so that we get
|
639 | dfe57c22 | Michael Hanselmann | # the same modifications as the data received from the client. Without
|
640 | dfe57c22 | Michael Hanselmann | # this, the comparison afterwards might fail without the data being
|
641 | dfe57c22 | Michael Hanselmann | # significantly different.
|
642 | 6c5a7090 | Michael Hanselmann | job_info = serializer.LoadJson(serializer.DumpJson(job_info)) |
643 | 6c5a7090 | Michael Hanselmann | log_entries = serializer.LoadJson(serializer.DumpJson(log_entries)) |
644 | dfe57c22 | Michael Hanselmann | |
645 | 6c5a7090 | Michael Hanselmann | if status not in (constants.JOB_STATUS_QUEUED, |
646 | e92376d7 | Iustin Pop | constants.JOB_STATUS_RUNNING, |
647 | e92376d7 | Iustin Pop | constants.JOB_STATUS_WAITLOCK): |
648 | 6c5a7090 | Michael Hanselmann | # Don't even try to wait if the job is no longer running, there will be
|
649 | 6c5a7090 | Michael Hanselmann | # no changes.
|
650 | dfe57c22 | Michael Hanselmann | break
|
651 | dfe57c22 | Michael Hanselmann | |
652 | 6c5a7090 | Michael Hanselmann | if (prev_job_info != job_info or |
653 | 6c5a7090 | Michael Hanselmann | (log_entries and prev_log_serial != log_entries[0][0])): |
654 | 6c5a7090 | Michael Hanselmann | break
|
655 | 6c5a7090 | Michael Hanselmann | |
656 | 6c5a7090 | Michael Hanselmann | logging.debug("Waiting again")
|
657 | 6c5a7090 | Michael Hanselmann | |
658 | 6c5a7090 | Michael Hanselmann | # Release the queue lock while waiting
|
659 | 5c735209 | Iustin Pop | job.change.wait(delta_time) |
660 | dfe57c22 | Michael Hanselmann | |
661 | dfe57c22 | Michael Hanselmann | logging.debug("Job %s changed", job_id)
|
662 | dfe57c22 | Michael Hanselmann | |
663 | 6c5a7090 | Michael Hanselmann | return (job_info, log_entries)
|
664 | dfe57c22 | Michael Hanselmann | |
665 | f1da30e6 | Michael Hanselmann | @utils.LockedMethod
|
666 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
667 | 188c5e0a | Michael Hanselmann | def CancelJob(self, job_id): |
668 | 188c5e0a | Michael Hanselmann | """Cancels a job.
|
669 | 188c5e0a | Michael Hanselmann |
|
670 | 188c5e0a | Michael Hanselmann | @type job_id: string
|
671 | 188c5e0a | Michael Hanselmann | @param job_id: Job ID of job to be cancelled.
|
672 | 188c5e0a | Michael Hanselmann |
|
673 | 188c5e0a | Michael Hanselmann | """
|
674 | 188c5e0a | Michael Hanselmann | logging.debug("Cancelling job %s", job_id)
|
675 | 188c5e0a | Michael Hanselmann | |
676 | 85f03e0d | Michael Hanselmann | job = self._LoadJobUnlocked(job_id)
|
677 | 188c5e0a | Michael Hanselmann | if not job: |
678 | 188c5e0a | Michael Hanselmann | logging.debug("Job %s not found", job_id)
|
679 | 188c5e0a | Michael Hanselmann | return
|
680 | 188c5e0a | Michael Hanselmann | |
681 | 85f03e0d | Michael Hanselmann | if job.CalcStatus() not in (constants.JOB_STATUS_QUEUED,): |
682 | 188c5e0a | Michael Hanselmann | logging.debug("Job %s is no longer in the queue", job.id)
|
683 | 188c5e0a | Michael Hanselmann | return
|
684 | 188c5e0a | Michael Hanselmann | |
685 | 85f03e0d | Michael Hanselmann | try:
|
686 | 85f03e0d | Michael Hanselmann | for op in job.ops: |
687 | 85f03e0d | Michael Hanselmann | op.status = constants.OP_STATUS_ERROR |
688 | 85f03e0d | Michael Hanselmann | op.result = "Job cancelled by request"
|
689 | 85f03e0d | Michael Hanselmann | finally:
|
690 | 85f03e0d | Michael Hanselmann | self.UpdateJobUnlocked(job)
|
691 | 188c5e0a | Michael Hanselmann | |
692 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
693 | 07cd723a | Iustin Pop | def _ArchiveJobUnlocked(self, job_id): |
694 | c609f802 | Michael Hanselmann | """Archives a job.
|
695 | c609f802 | Michael Hanselmann |
|
696 | c609f802 | Michael Hanselmann | @type job_id: string
|
697 | c609f802 | Michael Hanselmann | @param job_id: Job ID of job to be archived.
|
698 | c609f802 | Michael Hanselmann |
|
699 | c609f802 | Michael Hanselmann | """
|
700 | 07cd723a | Iustin Pop | logging.info("Archiving job %s", job_id)
|
701 | c609f802 | Michael Hanselmann | |
702 | c609f802 | Michael Hanselmann | job = self._LoadJobUnlocked(job_id)
|
703 | c609f802 | Michael Hanselmann | if not job: |
704 | c609f802 | Michael Hanselmann | logging.debug("Job %s not found", job_id)
|
705 | c609f802 | Michael Hanselmann | return
|
706 | c609f802 | Michael Hanselmann | |
707 | 85f03e0d | Michael Hanselmann | if job.CalcStatus() not in (constants.JOB_STATUS_CANCELED, |
708 | 85f03e0d | Michael Hanselmann | constants.JOB_STATUS_SUCCESS, |
709 | 85f03e0d | Michael Hanselmann | constants.JOB_STATUS_ERROR): |
710 | 85f03e0d | Michael Hanselmann | logging.debug("Job %s is not yet done", job.id)
|
711 | c609f802 | Michael Hanselmann | return
|
712 | c609f802 | Michael Hanselmann | |
713 | 5685c1a5 | Michael Hanselmann | old = self._GetJobPath(job.id)
|
714 | 5685c1a5 | Michael Hanselmann | new = self._GetArchivedJobPath(job.id)
|
715 | c609f802 | Michael Hanselmann | |
716 | 5685c1a5 | Michael Hanselmann | self._RenameFileUnlocked(old, new)
|
717 | c609f802 | Michael Hanselmann | |
718 | 5685c1a5 | Michael Hanselmann | logging.debug("Successfully archived job %s", job.id)
|
719 | f1da30e6 | Michael Hanselmann | |
720 | 07cd723a | Iustin Pop | @utils.LockedMethod
|
721 | 07cd723a | Iustin Pop | @_RequireOpenQueue
|
722 | 07cd723a | Iustin Pop | def ArchiveJob(self, job_id): |
723 | 07cd723a | Iustin Pop | """Archives a job.
|
724 | 07cd723a | Iustin Pop |
|
725 | 07cd723a | Iustin Pop | @type job_id: string
|
726 | 07cd723a | Iustin Pop | @param job_id: Job ID of job to be archived.
|
727 | 07cd723a | Iustin Pop |
|
728 | 07cd723a | Iustin Pop | """
|
729 | 07cd723a | Iustin Pop | return self._ArchiveJobUnlocked(job_id) |
730 | 07cd723a | Iustin Pop | |
731 | 07cd723a | Iustin Pop | @utils.LockedMethod
|
732 | 07cd723a | Iustin Pop | @_RequireOpenQueue
|
733 | 07cd723a | Iustin Pop | def AutoArchiveJobs(self, age): |
734 | 07cd723a | Iustin Pop | """Archives all jobs based on age.
|
735 | 07cd723a | Iustin Pop |
|
736 | 07cd723a | Iustin Pop | The method will archive all jobs which are older than the age
|
737 | 07cd723a | Iustin Pop | parameter. For jobs that don't have an end timestamp, the start
|
738 | 07cd723a | Iustin Pop | timestamp will be considered. The special '-1' age will cause
|
739 | 07cd723a | Iustin Pop | archival of all jobs (that are not running or queued).
|
740 | 07cd723a | Iustin Pop |
|
741 | 07cd723a | Iustin Pop | @type age: int
|
742 | 07cd723a | Iustin Pop | @param age: the minimum age in seconds
|
743 | 07cd723a | Iustin Pop |
|
744 | 07cd723a | Iustin Pop | """
|
745 | 07cd723a | Iustin Pop | logging.info("Archiving jobs with age more than %s seconds", age)
|
746 | 07cd723a | Iustin Pop | |
747 | 07cd723a | Iustin Pop | now = time.time() |
748 | 07cd723a | Iustin Pop | for jid in self._GetJobIDsUnlocked(archived=False): |
749 | 07cd723a | Iustin Pop | job = self._LoadJobUnlocked(jid)
|
750 | 07cd723a | Iustin Pop | if job.CalcStatus() not in (constants.OP_STATUS_SUCCESS, |
751 | 07cd723a | Iustin Pop | constants.OP_STATUS_ERROR, |
752 | 07cd723a | Iustin Pop | constants.OP_STATUS_CANCELED): |
753 | 07cd723a | Iustin Pop | continue
|
754 | 07cd723a | Iustin Pop | if job.end_timestamp is None: |
755 | 07cd723a | Iustin Pop | if job.start_timestamp is None: |
756 | 07cd723a | Iustin Pop | job_age = job.received_timestamp |
757 | 07cd723a | Iustin Pop | else:
|
758 | 07cd723a | Iustin Pop | job_age = job.start_timestamp |
759 | 07cd723a | Iustin Pop | else:
|
760 | 07cd723a | Iustin Pop | job_age = job.end_timestamp |
761 | 07cd723a | Iustin Pop | |
762 | 07cd723a | Iustin Pop | if age == -1 or now - job_age[0] > age: |
763 | 07cd723a | Iustin Pop | self._ArchiveJobUnlocked(jid)
|
764 | 07cd723a | Iustin Pop | |
765 | 85f03e0d | Michael Hanselmann | def _GetJobInfoUnlocked(self, job, fields): |
766 | e2715f69 | Michael Hanselmann | row = [] |
767 | e2715f69 | Michael Hanselmann | for fname in fields: |
768 | e2715f69 | Michael Hanselmann | if fname == "id": |
769 | e2715f69 | Michael Hanselmann | row.append(job.id) |
770 | e2715f69 | Michael Hanselmann | elif fname == "status": |
771 | 85f03e0d | Michael Hanselmann | row.append(job.CalcStatus()) |
772 | af30b2fd | Michael Hanselmann | elif fname == "ops": |
773 | 85f03e0d | Michael Hanselmann | row.append([op.input.__getstate__() for op in job.ops]) |
774 | af30b2fd | Michael Hanselmann | elif fname == "opresult": |
775 | 85f03e0d | Michael Hanselmann | row.append([op.result for op in job.ops]) |
776 | af30b2fd | Michael Hanselmann | elif fname == "opstatus": |
777 | 85f03e0d | Michael Hanselmann | row.append([op.status for op in job.ops]) |
778 | 5b23c34c | Iustin Pop | elif fname == "oplog": |
779 | 5b23c34c | Iustin Pop | row.append([op.log for op in job.ops]) |
780 | c56ec146 | Iustin Pop | elif fname == "opstart": |
781 | c56ec146 | Iustin Pop | row.append([op.start_timestamp for op in job.ops]) |
782 | c56ec146 | Iustin Pop | elif fname == "opend": |
783 | c56ec146 | Iustin Pop | row.append([op.end_timestamp for op in job.ops]) |
784 | c56ec146 | Iustin Pop | elif fname == "received_ts": |
785 | c56ec146 | Iustin Pop | row.append(job.received_timestamp) |
786 | c56ec146 | Iustin Pop | elif fname == "start_ts": |
787 | c56ec146 | Iustin Pop | row.append(job.start_timestamp) |
788 | c56ec146 | Iustin Pop | elif fname == "end_ts": |
789 | c56ec146 | Iustin Pop | row.append(job.end_timestamp) |
790 | 60dd1473 | Iustin Pop | elif fname == "summary": |
791 | 60dd1473 | Iustin Pop | row.append([op.input.Summary() for op in job.ops]) |
792 | e2715f69 | Michael Hanselmann | else:
|
793 | e2715f69 | Michael Hanselmann | raise errors.OpExecError("Invalid job query field '%s'" % fname) |
794 | e2715f69 | Michael Hanselmann | return row
|
795 | e2715f69 | Michael Hanselmann | |
796 | 85f03e0d | Michael Hanselmann | @utils.LockedMethod
|
797 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
798 | e2715f69 | Michael Hanselmann | def QueryJobs(self, job_ids, fields): |
799 | e2715f69 | Michael Hanselmann | """Returns a list of jobs in queue.
|
800 | e2715f69 | Michael Hanselmann |
|
801 | e2715f69 | Michael Hanselmann | Args:
|
802 | e2715f69 | Michael Hanselmann | - job_ids: Sequence of job identifiers or None for all
|
803 | e2715f69 | Michael Hanselmann | - fields: Names of fields to return
|
804 | e2715f69 | Michael Hanselmann |
|
805 | e2715f69 | Michael Hanselmann | """
|
806 | 85f03e0d | Michael Hanselmann | jobs = [] |
807 | e2715f69 | Michael Hanselmann | |
808 | 85f03e0d | Michael Hanselmann | for job in self._GetJobsUnlocked(job_ids): |
809 | 85f03e0d | Michael Hanselmann | if job is None: |
810 | 85f03e0d | Michael Hanselmann | jobs.append(None)
|
811 | 85f03e0d | Michael Hanselmann | else:
|
812 | 85f03e0d | Michael Hanselmann | jobs.append(self._GetJobInfoUnlocked(job, fields))
|
813 | e2715f69 | Michael Hanselmann | |
814 | 85f03e0d | Michael Hanselmann | return jobs
|
815 | e2715f69 | Michael Hanselmann | |
816 | f1da30e6 | Michael Hanselmann | @utils.LockedMethod
|
817 | db37da70 | Michael Hanselmann | @_RequireOpenQueue
|
818 | e2715f69 | Michael Hanselmann | def Shutdown(self): |
819 | e2715f69 | Michael Hanselmann | """Stops the job queue.
|
820 | e2715f69 | Michael Hanselmann |
|
821 | e2715f69 | Michael Hanselmann | """
|
822 | e2715f69 | Michael Hanselmann | self._wpool.TerminateWorkers()
|
823 | 85f03e0d | Michael Hanselmann | |
824 | 04ab05ce | Michael Hanselmann | self._queue_lock.Close()
|
825 | 04ab05ce | Michael Hanselmann | self._queue_lock = None |