mirror of
https://github.com/zulip/zulip.git
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128 lines
5.5 KiB
Python
Executable File
128 lines
5.5 KiB
Python
Executable File
#!/usr/bin/env python
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#
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# This script contains the actual logic for upgrading from an old
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# version of Zulip to the new version. upgrade-zulip-stage-2 is
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# always run from the new version of Zulip, so any bug fixes take
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# effect on the very next upgrade.
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from __future__ import print_function
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import argparse
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import subprocess
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import os
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import sys
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import logging
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os.environ["PYTHONUNBUFFERED"] = "y"
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sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..'))
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from scripts.lib.zulip_tools import DEPLOYMENTS_DIR, FAIL, WARNING, ENDC, su_to_zulip
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from scripts.lib.node_cache import setup_node_modules
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logging.basicConfig(format="%(asctime)s upgrade-zulip-stage-2: %(message)s",
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level=logging.INFO)
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if os.getuid() != 0:
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logging.error("Must be run as root.")
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sys.exit(1)
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parser = argparse.ArgumentParser()
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parser.add_argument("deploy_path", metavar="deploy_path",
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help="Path to deployment directory")
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parser.add_argument("--skip-puppet", dest="skip_puppet", action='store_true',
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help="Skip doing puppet/apt upgrades.")
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parser.add_argument("--skip-migrations", dest="skip_migrations", action='store_true',
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help="Skip doing migrations.")
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parser.add_argument("--from-git", dest="from_git", action='store_true',
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help="Upgrading from git, so run update-prod-static.")
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args = parser.parse_args()
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deploy_path = args.deploy_path
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os.chdir(deploy_path)
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# Handle issues around upstart on Ubuntu Xenial
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subprocess.check_call(["./scripts/lib/check-upstart"])
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if not args.skip_puppet:
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logging.info("Upgrading system packages...")
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subprocess.check_call(["apt-get", "update"])
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subprocess.check_call(["apt-get", "-y", "upgrade"])
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if not os.path.exists((os.path.join(deploy_path, "zproject/prod_settings"))):
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subprocess.check_call(["ln", "-nsf", "/etc/zulip/settings.py",
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os.path.join(deploy_path, "zproject/prod_settings.py")])
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# delete local_settings.py symlink if it exists, as it is now prod_settings.py
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if os.path.islink((os.path.join(deploy_path, "zproject/local_settings.py"))):
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subprocess.check_call(["rm", os.path.join(deploy_path, "zproject/local_settings.py")])
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# Now we should have an environment setup where we can run our tools;
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# first, creating the production venv.
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subprocess.check_call([os.path.join(deploy_path, "scripts", "lib", "create-production-venv"),
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deploy_path])
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# Make sure the right version of node is installed
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subprocess.check_call([os.path.join(deploy_path, "scripts", "lib", "install-node"),
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deploy_path])
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# And then, building/installing the static assets.
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if args.from_git:
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# Note: The fact that this is before we apply puppet changes means
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# that we don't support adding new puppet dependencies of
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# update-prod-static with the git upgrade process. But it'll fail
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# safely; this seems like a worthwhile tradeoff to minimize downtime.
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logging.info("Building static assets...")
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subprocess.check_call(["./tools/update-prod-static", "--prev-deploy",
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os.path.join(DEPLOYMENTS_DIR, 'current')],
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preexec_fn=su_to_zulip)
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else:
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# Since this doesn't do any actual work, it's likely safe to have
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# this run before we apply puppet changes (saving a bit of downtime).
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logging.info("Installing static assets...")
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subprocess.check_call(["cp", "-rT", os.path.join(deploy_path, 'prod-static/serve'),
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'/home/zulip/prod-static'], preexec_fn=su_to_zulip)
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# Sets up npm cache
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setup_node_modules(npm_args=['--production'], copy_modules=True)
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# Our next optimization is to check whether any migrations are needed
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# before we start the critical section of the restart. This saves
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# about 1s of downtime in a no-op upgrade.
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migrations_needed = False
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if not args.skip_migrations:
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logging.info("Checking for needed migrations")
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migrations_output = subprocess.check_output(["./manage.py", "showmigrations"],
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preexec_fn=su_to_zulip)
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for ln in migrations_output.split(b"\n"):
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if ln.strip().startswith("[ ]"):
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migrations_needed = True
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# Now we start shutting down services; we start with
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# process-fts-updates, which isn't on the critical serving path.
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if os.path.exists("/etc/supervisor/conf.d/zulip_db.conf"):
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subprocess.check_call(["supervisorctl", "stop", "process-fts-updates"], preexec_fn=su_to_zulip)
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if not args.skip_puppet or migrations_needed:
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# By default, we shut down the service to apply migrations and
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# puppet changes, to minimize risk of issues due to inconsistent
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# state.
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logging.info("Stopping Zulip...")
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subprocess.check_call(["supervisorctl", "stop", "zulip-workers:*", "zulip-django",
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"zulip-tornado", "zulip-senders:*"], preexec_fn=su_to_zulip)
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if not args.skip_puppet:
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logging.info("Applying puppet changes...")
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subprocess.check_call(["./scripts/zulip-puppet-apply", "--force"])
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subprocess.check_call(["apt-get", "upgrade"])
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if migrations_needed:
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logging.info("Applying database migrations...")
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subprocess.check_call(["./manage.py", "migrate", "--noinput"], preexec_fn=su_to_zulip)
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logging.info("Restarting Zulip...")
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subprocess.check_output(["./scripts/restart-server"], preexec_fn=su_to_zulip)
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if os.path.exists("/etc/supervisor/conf.d/zulip_db.conf"):
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subprocess.check_call(["supervisorctl", "start", "process-fts-updates"], preexec_fn=su_to_zulip)
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logging.info("Upgrade complete!")
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subprocess.check_call(["./scripts/purge-old-deployments"])
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