mirror of
https://github.com/zulip/zulip.git
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113 lines
4.1 KiB
Python
Executable File
113 lines
4.1 KiB
Python
Executable File
#!/usr/bin/env python3
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import argparse
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import logging
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import os
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import pwd
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import shlex
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import subprocess
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import sys
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import time
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sys.path.append(os.path.join(os.path.dirname(__file__), ".."))
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from scripts.lib.zulip_tools import (
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DEPLOYMENTS_DIR,
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ENDC,
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OKGREEN,
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WARNING,
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get_config_file,
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get_tornado_ports,
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overwrite_symlink,
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)
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logging.Formatter.converter = time.gmtime
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logging.basicConfig(format="%(asctime)s restart-server: %(message)s", level=logging.INFO)
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parser = argparse.ArgumentParser()
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parser.add_argument("--fill-cache", action="store_true", help="Fill the memcached caches")
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args = parser.parse_args()
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deploy_path = os.path.realpath(os.path.join(os.path.dirname(__file__), ".."))
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os.chdir(deploy_path)
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if pwd.getpwuid(os.getuid()).pw_name != "zulip":
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logging.error("Must be run as user 'zulip'.")
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sys.exit(1)
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# Send a statsd event on restarting the server
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subprocess.check_call(
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["./manage.py", "send_stats", "incr", "events.server_restart", str(int(time.time()))]
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)
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if args.fill_cache:
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logging.info("Filling memcached caches")
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subprocess.check_call(["./manage.py", "fill_memcached_caches"])
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core_server_services = ["zulip-django"]
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if os.path.exists("/etc/supervisor/conf.d/thumbor.conf"):
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core_server_services.append("zulip-thumbor")
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current_symlink = os.path.join(DEPLOYMENTS_DIR, "current")
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last_symlink = os.path.join(DEPLOYMENTS_DIR, "last")
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change_symlink = os.readlink(current_symlink) != deploy_path
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if change_symlink:
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overwrite_symlink(os.readlink(current_symlink), last_symlink)
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overwrite_symlink(deploy_path, current_symlink)
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config_file = get_config_file()
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tornado_ports = get_tornado_ports(config_file)
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# We restart just the zulip-tornado service early, in order to
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# minimize downtime of the tornado service caused by too many Python
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# processes restarting at the same time resulting in it receiving
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# insufficient priority. This is important, because Tornado is the
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# main source of user-visible downtime when we restart a Zulip server.
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if len(tornado_ports) > 1:
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for p in tornado_ports:
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# Restart Tornado processes individually for a better rate of
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# restarts. This also avoids behavior with restarting a whole
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# supervisord group where if any individual process is slow to
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# stop, the whole bundle stays stopped for an extended time.
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logging.info("Restarting Tornado process on port %s", p)
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subprocess.check_call(["supervisorctl", "restart", f"zulip-tornado:zulip-tornado-port-{p}"])
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else:
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logging.info("Restarting Tornado process")
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subprocess.check_call(["supervisorctl", "restart", "zulip-tornado", "zulip-tornado:*"])
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# Restart the uWSGI and related processes via supervisorctl.
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logging.info("Stopping workers")
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subprocess.check_call(["supervisorctl", "stop", "zulip-workers:*"])
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logging.info("Stopping server core")
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subprocess.check_call(["supervisorctl", "stop", *core_server_services])
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logging.info("Starting server core")
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subprocess.check_call(["supervisorctl", "start", *reversed(core_server_services)])
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logging.info("Starting workers")
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subprocess.check_call(["supervisorctl", "start", "zulip-workers:*"])
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using_sso = subprocess.check_output(["./scripts/get-django-setting", "USING_APACHE_SSO"])
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if using_sso.strip() == b"True":
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logging.info("Restarting Apache WSGI process...")
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subprocess.check_call(["pkill", "-f", "apache2", "-u", "zulip"])
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if os.path.exists("/etc/supervisor/conf.d/zulip_db.conf"):
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subprocess.check_call(["supervisorctl", "restart", "process-fts-updates"])
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logging.info("Done!")
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print(OKGREEN + "Application restarted successfully!" + ENDC)
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if change_symlink and "PWD" in os.environ:
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for symlink in [last_symlink, current_symlink]:
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if os.path.commonprefix([os.environ["PWD"], symlink]) == symlink:
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print(
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"""
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{}Your shell entered its current directory through a symlink:
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{}
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which has now changed. Your shell will not see this change until you run:
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cd {}
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to traverse the symlink again.{}
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""".format(
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WARNING, symlink, shlex.quote(os.environ["PWD"]), ENDC
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),
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file=sys.stderr,
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)
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