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provision: Start a new Python process after activating the virtualenv.

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Mismatching imports from outside and inside the virtualenv in the same
process was causing segfaults after apparently benign changes to the
script!

Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
This commit is contained in:
Anders Kaseorg
2019-07-18 23:06:34 -07:00
committed by Tim Abbott
parent 726d5003e1
commit c5a4b0501b
2 changed files with 247 additions and 193 deletions
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216
tools/lib/provision.py
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@@ -7,15 +7,14 @@ import platform
import subprocess
import glob
import hashlib
import shutil
os.environ["PYTHONUNBUFFERED"] = "y"
ZULIP_PATH = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
sys.path.append(ZULIP_PATH)
from scripts.lib.zulip_tools import run, run_as_root, OKBLUE, ENDC, WARNING, \
get_dev_uuid_var_path, FAIL, parse_lsb_release, file_or_package_hash_updated, \
from scripts.lib.zulip_tools import run_as_root, ENDC, WARNING, \
get_dev_uuid_var_path, FAIL, parse_lsb_release, \
overwrite_symlink
from scripts.lib.setup_venv import (
VENV_DEPENDENCIES, REDHAT_VENV_DEPENDENCIES,
@@ -23,13 +22,11 @@ from scripts.lib.setup_venv import (
FEDORA_VENV_DEPENDENCIES
)
from scripts.lib.node_cache import setup_node_modules, NODE_MODULES_CACHE_PATH
from tools.setup import setup_venvs
from version import PROVISION_VERSION
if False:
# See https://zulip.readthedocs.io/en/latest/testing/mypy.html#mypy-in-production-scripts
from typing import Any, List
from tools.setup.generate_zulip_bots_static_files import generate_zulip_bots_static_files
from typing import List, NoReturn
SUPPORTED_PLATFORMS = {
"Ubuntu": [
@@ -53,24 +50,11 @@ SUPPORTED_PLATFORMS = {
]
}
VENV_PATH = "/srv/zulip-py3-venv"
VAR_DIR_PATH = os.path.join(ZULIP_PATH, 'var')
LOG_DIR_PATH = os.path.join(VAR_DIR_PATH, 'log')
UPLOAD_DIR_PATH = os.path.join(VAR_DIR_PATH, 'uploads')
TEST_UPLOAD_DIR_PATH = os.path.join(VAR_DIR_PATH, 'test_uploads')
COVERAGE_DIR_PATH = os.path.join(VAR_DIR_PATH, 'coverage')
NODE_TEST_COVERAGE_DIR_PATH = os.path.join(VAR_DIR_PATH, 'node-coverage')
XUNIT_XML_TEST_RESULTS_DIR_PATH = os.path.join(VAR_DIR_PATH, 'xunit-test-results')
is_travis = 'TRAVIS' in os.environ
is_circleci = 'CIRCLECI' in os.environ
# TODO: De-duplicate this with emoji_dump.py
EMOJI_CACHE_PATH = "/srv/zulip-emoji-cache"
if is_travis:
# In Travis CI, we don't have root access
EMOJI_CACHE_PATH = "/home/travis/zulip-emoji-cache"
if not os.path.exists(os.path.join(ZULIP_PATH, ".git")):
print(FAIL + "Error: No Zulip git repository present!" + ENDC)
print("To setup the Zulip development environment, you should clone the code")
@@ -264,27 +248,6 @@ REPO_STOPWORDS_PATH = os.path.join(
user_id = os.getuid()
def setup_shell_profile(shell_profile):
# type: (str) -> None
shell_profile_path = os.path.expanduser(shell_profile)
def write_command(command):
# type: (str) -> None
if os.path.exists(shell_profile_path):
with open(shell_profile_path, 'r') as shell_profile_file:
lines = [line.strip() for line in shell_profile_file.readlines()]
if command not in lines:
with open(shell_profile_path, 'a+') as shell_profile_file:
shell_profile_file.writelines(command + '\n')
else:
with open(shell_profile_path, 'w') as shell_profile_file:
shell_profile_file.writelines(command + '\n')
source_activate_command = "source " + os.path.join(VENV_PATH, "bin", "activate")
write_command(source_activate_command)
if os.path.exists('/srv/zulip'):
write_command('cd /srv/zulip')
def install_system_deps():
# type: () -> None
@@ -379,7 +342,7 @@ def install_yum_deps(deps_to_install):
% (POSTGRES_VERSION,))
def main(options):
# type: (Any) -> int
# type: (argparse.Namespace) -> NoReturn
# yarn and management commands expect to be run from the root of the
# project.
@@ -450,65 +413,10 @@ def main(options):
# Install shellcheck.
run_as_root(["scripts/lib/install-shellcheck"])
from tools.setup import setup_venvs
setup_venvs.main()
activate_this = "/srv/zulip-py3-venv/bin/activate_this.py"
exec(open(activate_this).read(), dict(__file__=activate_this))
setup_shell_profile('~/.bash_profile')
setup_shell_profile('~/.zprofile')
# This needs to happen before anything that imports zproject.settings.
run(["scripts/setup/generate_secrets.py", "--development"])
run_as_root(["cp", REPO_STOPWORDS_PATH, TSEARCH_STOPWORDS_PATH])
# create log directory `zulip/var/log`
os.makedirs(LOG_DIR_PATH, exist_ok=True)
# create upload directory `var/uploads`
os.makedirs(UPLOAD_DIR_PATH, exist_ok=True)
# create test upload directory `var/test_upload`
os.makedirs(TEST_UPLOAD_DIR_PATH, exist_ok=True)
# create coverage directory `var/coverage`
os.makedirs(COVERAGE_DIR_PATH, exist_ok=True)
# create linecoverage directory `var/node-coverage`
os.makedirs(NODE_TEST_COVERAGE_DIR_PATH, exist_ok=True)
# create XUnit XML test results directory`var/xunit-test-results`
os.makedirs(XUNIT_XML_TEST_RESULTS_DIR_PATH, exist_ok=True)
# The `build_emoji` script requires `emoji-datasource` package
# which we install via npm; thus this step is after installing npm
# packages.
if not os.path.isdir(EMOJI_CACHE_PATH):
run_as_root(["mkdir", EMOJI_CACHE_PATH])
run_as_root(["chown", "%s:%s" % (user_id, user_id), EMOJI_CACHE_PATH])
run(["tools/setup/emoji/build_emoji"])
# copy over static files from the zulip_bots package
generate_zulip_bots_static_files()
build_pygments_data_paths = ["tools/setup/build_pygments_data", "tools/setup/lang.json"]
from pygments import __version__ as pygments_version
if file_or_package_hash_updated(build_pygments_data_paths, "build_pygments_data_hash", options.is_force,
[pygments_version]):
run(["tools/setup/build_pygments_data"])
else:
print("No need to run `tools/setup/build_pygments_data`.")
update_authors_json_paths = ["tools/update-authors-json", "zerver/tests/fixtures/authors.json"]
if file_or_package_hash_updated(update_authors_json_paths, "update_authors_json_hash", options.is_force):
run(["tools/update-authors-json", "--use-fixture"])
else:
print("No need to run `tools/update-authors-json`.")
email_source_paths = ["tools/inline-email-css", "templates/zerver/emails/email.css"]
email_source_paths += glob.glob('templates/zerver/emails/*.source.html')
if file_or_package_hash_updated(email_source_paths, "last_email_source_files_hash", options.is_force):
run(["tools/inline-email-css"])
else:
print("No need to run `tools/inline-email-css`.")
if is_circleci or (is_travis and not options.is_production_travis):
run_as_root(["service", "rabbitmq-server", "restart"])
run_as_root(["service", "redis-server", "restart"])
@@ -518,102 +426,24 @@ def main(options):
for service in ["postgresql-%s" % (POSTGRES_VERSION,), "rabbitmq-server", "memcached", "redis"]:
run_as_root(["systemctl", "enable", service], sudo_args = ['-H'])
run_as_root(["systemctl", "start", service], sudo_args = ['-H'])
if not options.is_production_travis:
# The following block is skipped for the production Travis
# suite, because that suite doesn't make use of these elements
# of the development environment (it just uses the development
# environment to build a release tarball).
# Need to set up Django before using template_database_status
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "zproject.settings")
import django
django.setup()
from zerver.lib.test_fixtures import template_database_status, run_db_migrations, \
destroy_leaked_test_databases
try:
from zerver.lib.queue import SimpleQueueClient
SimpleQueueClient()
rabbitmq_is_configured = True
except Exception:
rabbitmq_is_configured = False
if options.is_force or not rabbitmq_is_configured:
run(["scripts/setup/configure-rabbitmq"])
else:
print("RabbitMQ is already configured.")
migration_status_path = os.path.join(UUID_VAR_PATH, "migration_status_dev")
dev_template_db_status = template_database_status(
migration_status=migration_status_path,
settings="zproject.settings",
database_name="zulip",
)
if options.is_force or dev_template_db_status == 'needs_rebuild':
run(["tools/setup/postgres-init-dev-db"])
run(["tools/do-destroy-rebuild-database"])
elif dev_template_db_status == 'run_migrations':
run_db_migrations('dev')
elif dev_template_db_status == 'current':
print("No need to regenerate the dev DB.")
test_template_db_status = template_database_status()
if options.is_force or test_template_db_status == 'needs_rebuild':
run(["tools/setup/postgres-init-test-db"])
run(["tools/do-destroy-rebuild-test-database"])
elif test_template_db_status == 'run_migrations':
run_db_migrations('test')
elif test_template_db_status == 'current':
print("No need to regenerate the test DB.")
# Consider updating generated translations data: both `.mo`
# files and `language-options.json`.
paths = ['zerver/management/commands/compilemessages.py']
paths += glob.glob('locale/*/LC_MESSAGES/*.po')
paths += glob.glob('locale/*/translations.json')
if file_or_package_hash_updated(paths, "last_compilemessages_hash", options.is_force):
run(["./manage.py", "compilemessages"])
else:
print("No need to run `manage.py compilemessages`.")
destroyed = destroy_leaked_test_databases()
if destroyed:
print("Dropped %s stale test databases!" % (destroyed,))
run(["scripts/lib/clean-unused-caches"])
# Keeping this cache file around can cause eslint to throw
# random TypeErrors when new/updated dependencies are added
if os.path.isfile('.eslintcache'):
# Remove this block when
# https://github.com/eslint/eslint/issues/11639 is fixed
# upstream.
os.remove('.eslintcache')
# Clean up the root of the `var/` directory for various
# testing-related files that we have migrated to
# `var/<uuid>/test-backend`.
print("Cleaning var/ directory files...")
var_paths = glob.glob('var/test*')
var_paths.append('var/bot_avatar')
for path in var_paths:
try:
if os.path.isdir(path):
shutil.rmtree(path)
else:
os.remove(path)
except FileNotFoundError:
pass
version_file = os.path.join(UUID_VAR_PATH, 'provision_version')
print('writing to %s\n' % (version_file,))
open(version_file, 'w').write(PROVISION_VERSION + '\n')
print()
print(OKBLUE + "Zulip development environment setup succeeded!" + ENDC)
return 0
# If we imported modules after activating the virtualenv in this
# Python process, they could end up mismatching with modules we’ve
# already imported from outside the virtualenv. That seems like a
# bad idea, and empirically it can cause Python to segfault on
# certain cffi-related imports. Instead, start a new Python
# process inside the virtualenv.
activate_this = "/srv/zulip-py3-venv/bin/activate_this.py"
provision_inner = os.path.join(ZULIP_PATH, "tools", "lib", "provision_inner.py")
exec(open(activate_this).read(), dict(__file__=activate_this))
os.execvp(
provision_inner,
[
provision_inner,
*(["--force"] if options.is_force else []),
*(["--production-travis"] if options.is_production_travis else []),
]
)
if __name__ == "__main__":
description = ("Provision script to install Zulip")
@@ -628,4 +458,4 @@ if __name__ == "__main__":
help="Provision for Travis with production settings.")
options = parser.parse_args()
sys.exit(main(options))
main(options)