The Gatekeeper, or a project gating system
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#!/usr/bin/env python
# Copyright 2017 Red Hat, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import logging
import signal
import sys
import zuul.cmd
import zuul.model
import zuul.web
import zuul.driver.sql
import zuul.driver.github
from zuul.lib.config import get_default
class WebServer(zuul.cmd.ZuulDaemonApp):
app_name = 'web'
app_description = 'A standalone Zuul web server.'
def createParser(self):
parser = super().createParser()
parser.add_argument('command',
choices=zuul.web.COMMANDS,
nargs='?')
return parser
def parseArguments(self, args=None):
super().parseArguments()
if self.args.command:
self.args.nodaemon = True
def exit_handler(self, signum, frame):
self.web.stop()
def _run(self):
info = zuul.model.WebInfo.fromConfig(self.config)
params = dict()
params['info'] = info
params['listen_address'] = get_default(self.config,
'web', 'listen_address',
'127.0.0.1')
params['listen_port'] = get_default(self.config, 'web', 'port', 9000)
params['static_cache_expiry'] = get_default(self.config, 'web',
'static_cache_expiry',
3600)
params['static_path'] = get_default(self.config,
'web', 'static_path',
None)
params['gear_server'] = get_default(self.config, 'gearman', 'server')
params['gear_port'] = get_default(self.config, 'gearman', 'port', 4730)
params['ssl_key'] = get_default(self.config, 'gearman', 'ssl_key')
params['ssl_cert'] = get_default(self.config, 'gearman', 'ssl_cert')
params['ssl_ca'] = get_default(self.config, 'gearman', 'ssl_ca')
params['command_socket'] = get_default(
self.config, 'web', 'command_socket',
'/var/lib/zuul/web.socket')
params['connections'] = self.connections
# Validate config here before we spin up the ZuulWeb object
for conn_name, connection in self.connections.connections.items():
try:
connection.validateWebConfig(self.config, self.connections)
except Exception:
self.log.exception("Error validating config")
sys.exit(1)
params["zk_hosts"] = get_default(
self.config, 'zookeeper', 'hosts', None)
if not params["zk_hosts"]:
raise Exception("The zookeeper hosts config value is required")
try:
self.web = zuul.web.ZuulWeb(**params)
except Exception:
self.log.exception("Error creating ZuulWeb:")
sys.exit(1)
signal.signal(signal.SIGUSR1, self.exit_handler)
signal.signal(signal.SIGTERM, self.exit_handler)
self.log.info('Zuul Web Server starting')
self.web.start()
try:
signal.pause()
except KeyboardInterrupt:
print("Ctrl + C: asking web server to exit nicely...\n")
self.exit_handler(signal.SIGINT, None)
self.web.stop()
self.log.info("Zuul Web Server stopped")
def run(self):
if self.args.command in zuul.web.COMMANDS:
self.send_command(self.args.command)
sys.exit(0)
self.setup_logging('web', 'log_config')
self.log = logging.getLogger("zuul.WebServer")
try:
self.configure_connections(
include_drivers=[zuul.driver.sql.SQLDriver,
zuul.driver.github.GithubDriver,
zuul.driver.pagure.PagureDriver])
self._run()
except Exception:
self.log.exception("Exception from WebServer:")
def main():
WebServer().main()
if __name__ == "__main__":
main()