2013-02-19 01:00:54 +01:00
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#!/usr/bin/env python
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2013-08-06 21:32:15 +02:00
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# Copyright (C) 2012 Zulip, Inc.
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2012-11-26 16:55:22 +01:00
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#
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# Permission is hereby granted, free of charge, to any person
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# obtaining a copy of this software and associated documentation files
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# (the "Software"), to deal in the Software without restriction,
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# including without limitation the rights to use, copy, modify, merge,
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# publish, distribute, sublicense, and/or sell copies of the Software,
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# and to permit persons to whom the Software is furnished to do so,
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# subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be
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# included in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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# SOFTWARE.
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2012-09-13 02:29:26 +02:00
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import sys
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2012-09-13 03:41:52 +02:00
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import subprocess
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2012-09-26 16:44:42 +02:00
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import os
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2012-11-19 18:04:23 +01:00
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import traceback
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zmirror: Allow duplicate zmirror processes to die gracefully.
Fixes #602.
I replaced the SIGKILL with a SIGINT, and then catch SIGINT with a
handler. This handler calls cancelSubs if necessary, and can later be
edited to perform other clean-up operations, too. I thought about, in
this same commit, changing the SIGTERM in
maybe_restart_mirroring_script to a SIGINT, but after tracing out the
code paths, I realized that isn't necessary. (The SIGTERM is
necessarily performed on a process that has not subscribed to any
zephyr classes, so cancelSubs is unnecessary. If we do think that we
may want to add additional clean-up operations in the future, though,
then it might be worth investigating changing this SIGTERM.)
(imported from commit 692b295be6cb40b0e4ec2ca0bc58c58056ed9bd9)
2013-01-03 19:21:19 +01:00
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import signal
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2012-10-29 23:09:51 +01:00
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2012-11-19 18:04:23 +01:00
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from zephyr_mirror_backend import parse_args
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2012-10-11 22:20:38 +02:00
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zmirror: Allow duplicate zmirror processes to die gracefully.
Fixes #602.
I replaced the SIGKILL with a SIGINT, and then catch SIGINT with a
handler. This handler calls cancelSubs if necessary, and can later be
edited to perform other clean-up operations, too. I thought about, in
this same commit, changing the SIGTERM in
maybe_restart_mirroring_script to a SIGINT, but after tracing out the
code paths, I realized that isn't necessary. (The SIGTERM is
necessarily performed on a process that has not subscribed to any
zephyr classes, so cancelSubs is unnecessary. If we do think that we
may want to add additional clean-up operations in the future, though,
then it might be worth investigating changing this SIGTERM.)
(imported from commit 692b295be6cb40b0e4ec2ca0bc58c58056ed9bd9)
2013-01-03 19:21:19 +01:00
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def die(signal, frame):
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# We actually want to exit, so run os._exit (so as not to be caught and restarted)
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os._exit(1)
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signal.signal(signal.SIGINT, die)
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2012-11-19 18:04:23 +01:00
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(options, args) = parse_args()
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2012-10-11 22:20:38 +02:00
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2014-03-11 19:09:15 +01:00
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sys.path[:0] = [os.path.join(options.root_path, 'api')]
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from zulip import RandomExponentialBackoff
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2012-11-20 21:23:30 +01:00
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args = [os.path.join(options.root_path, "user_root", "zephyr_mirror_backend.py")]
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args.extend(sys.argv[1:])
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if options.sync_subscriptions:
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subprocess.call(args)
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sys.exit(0)
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2012-11-29 14:58:59 +01:00
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if options.forward_class_messages and not options.noshard:
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2013-10-04 19:19:57 +02:00
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sys.path.append("/home/zulip/zulip")
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2013-08-20 20:03:07 +02:00
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if options.on_startup_command is not None:
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subprocess.call([options.on_startup_command])
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2013-08-20 12:50:24 +02:00
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from zerver.lib.parallel import run_parallel
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2012-11-27 16:27:02 +01:00
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print "Starting parallel zephyr class mirroring bot"
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jobs = list("0123456789abcdef")
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def run_job(shard):
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subprocess.call(args + ["--shard=%s" % (shard,)])
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return 0
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for (status, job) in run_parallel(run_job, jobs, threads=16):
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print "A mirroring shard died!"
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pass
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sys.exit(0)
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2013-02-14 18:04:45 +01:00
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backoff = RandomExponentialBackoff()
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while backoff.keep_going():
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2012-11-19 18:04:23 +01:00
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print "Starting zephyr mirroring bot"
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2012-11-13 22:30:39 +01:00
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try:
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2012-11-19 18:04:23 +01:00
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subprocess.call(args)
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2012-11-13 22:30:39 +01:00
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except:
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2012-11-19 18:04:23 +01:00
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traceback.print_exc()
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2013-02-14 18:04:45 +01:00
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backoff.fail()
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print ""
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print ""
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print "ERROR: The Zephyr mirroring bot is unable to continue mirroring Zephyrs."
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print "This is often caused by failing to maintain unexpired Kerberos tickets"
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2013-07-18 20:02:07 +02:00
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print "or AFS tokens. See https://zulip.com/zephyr for documentation on how to"
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print "maintain unexpired Kerberos tickets and AFS tokens."
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2013-02-14 18:04:45 +01:00
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print ""
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sys.exit(1)
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