120 lines
4.1 KiB
Python
Executable File
120 lines
4.1 KiB
Python
Executable File
#!/usr/bin/python2
|
|
#
|
|
# Copyright 2013 Rackspace Australia
|
|
#
|
|
# 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.
|
|
|
|
|
|
""" worker_server.py is an executable worker server that loads and runs
|
|
task_plugins. """
|
|
|
|
import logging
|
|
import os
|
|
import signal
|
|
import sys
|
|
|
|
import worker_manager
|
|
|
|
|
|
class Server(object):
|
|
|
|
""" This is the worker server object to be daemonized """
|
|
log = logging.getLogger("worker_server.Server")
|
|
|
|
def __init__(self, config):
|
|
self.config = config
|
|
# Python logging output file.
|
|
self.debug_log = self.config['debug_log']
|
|
|
|
# Config init
|
|
self.zuul_manager = None
|
|
self.zuul_client = None
|
|
self.plugins = []
|
|
|
|
# TODO: Make me unique (random?) and we should be able to run multiple
|
|
# instances of turbo-hipster on the one host
|
|
self.worker_name = os.uname()[1]
|
|
|
|
self.tasks = {}
|
|
self.load_plugins()
|
|
|
|
def setup_logging(self):
|
|
if self.debug_log:
|
|
if not os.path.isdir(os.path.dirname(self.debug_log)):
|
|
os.makedirs(os.path.dirname(self.debug_log))
|
|
logging.basicConfig(format='%(asctime)s %(name)s %(message)s',
|
|
filename=self.debug_log, level=logging.DEBUG)
|
|
else:
|
|
logging.basicConfig(format='%(asctime)s %(name)s %(message)s',
|
|
level=logging.WARN)
|
|
self.log.debug('Log pusher starting.')
|
|
|
|
def load_plugins(self):
|
|
""" Load the available plugins from task_plugins """
|
|
self.log.debug('Loading plugins')
|
|
# Load plugins
|
|
for plugin in self.config['plugins']:
|
|
self.plugins.append({
|
|
'module': __import__('turbo_hipster.task_plugins.' +
|
|
plugin['name'] + '.task',
|
|
fromlist='turbo_hipster.task_plugins' +
|
|
plugin['name']),
|
|
'plugin_config': plugin
|
|
})
|
|
self.log.debug('Plugin %s loaded' % plugin['name'])
|
|
|
|
def start_gearman_workers(self):
|
|
""" Run the tasks """
|
|
self.log.debug('Starting gearman workers')
|
|
self.zuul_client = worker_manager.ZuulClient(self.config,
|
|
self.worker_name)
|
|
|
|
for task_number, plugin in enumerate(self.plugins):
|
|
module = plugin['module']
|
|
job_name = '%s-%s-%s' % (plugin['plugin_config']['name'],
|
|
self.worker_name, task_number)
|
|
self.tasks[job_name] = module.Runner(
|
|
self.config,
|
|
plugin['plugin_config'],
|
|
job_name
|
|
)
|
|
self.zuul_client.add_function(plugin['plugin_config']['function'],
|
|
self.tasks[job_name])
|
|
|
|
self.zuul_client.register_functions()
|
|
self.zuul_client.daemon = True
|
|
self.zuul_client.start()
|
|
|
|
self.zuul_manager = worker_manager.ZuulManager(self.config, self.tasks)
|
|
self.zuul_manager.daemon = True
|
|
self.zuul_manager.start()
|
|
|
|
def exit_handler(self, signum):
|
|
self.log.debug('Exiting...')
|
|
signal.signal(signal.SIGUSR1, signal.SIG_IGN)
|
|
for task_name, task in self.tasks.items():
|
|
task.stop()
|
|
self.manager.stop()
|
|
sys.exit(0)
|
|
|
|
def main(self):
|
|
self.setup_logging()
|
|
self.start_gearman_workers()
|
|
|
|
while True:
|
|
try:
|
|
signal.pause()
|
|
except KeyboardInterrupt:
|
|
print "Ctrl + C: asking tasks to exit nicely...\n"
|
|
self.exit_handler(signal.SIGINT)
|