Add server command: "geard".

Change-Id: I38f5ac0c960f476838c798c775aef4f91dde43f2

gear/cmd/geard.py

@@ -0,0 +1,88 @@
+#!/usr/bin/env python
+# Copyright 2013 OpenStack Foundation
+#
+# 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 argparse
+import daemon
+import extras
+import gear
+import logging
+import os
+import pbr.version
+import signal
+import sys
+
+pid_file_module = extras.try_imports(['daemon.pidlockfile', 'daemon.pidfile'])
+
+
+class Server(object):
+    def __init__(self):
+        self.args = None
+        self.config = None
+        self.gear_server_pid = None
+
+    def parse_arguments(self):
+        parser = argparse.ArgumentParser(description='Gearman server.')
+        parser.add_argument('-d', dest='nodaemon', action='store_true',
+                            help='do not run as a daemon')
+        parser.add_argument('-p', dest='port', default=4730,
+                            help='port on which to listen')
+        parser.add_argument('--log-config', dest='log_config',
+                            help='logging config file')
+        parser.add_argument('--pidfile', dest='pidfile',
+                            default='/var/run/geard/geard.pid',
+                            help='PID file')
+        parser.add_argument('--version', dest='version', action='store_true',
+                            help='show version')
+        self.args = parser.parse_args()
+
+    def setup_logging(self):
+        if self.args.log_config:
+            if not os.path.exists(self.args.log_config):
+                raise Exception("Unable to read logging config file at %s" %
+                                self.args.log_config)
+            logging.config.fileConfig(self.args.log_config)
+        else:
+            if self.args.nodaemon:
+                logging.basicConfig(level=logging.DEBUG)
+            else:
+                logging.basicConfig(level=logging.INFO,
+                                    filename="/var/log/geard/geard.log")
+
+    def main(self):
+        self.server = gear.Server(self.args.port)
+        signal.pause()
+
+
+def main():
+    server = Server()
+    server.parse_arguments()
+
+    if server.args.version:
+        vi = pbr.version.VersionInfo('gear')
+        print("Gear version: {}".format(vi.version_string()))
+        sys.exit(0)
+
+    server.setup_logging()
+    if server.args.nodaemon:
+        server.main()
+    else:
+        pid = pid_file_module.TimeoutPIDLockFile(server.args.pidfile, 10)
+        with daemon.DaemonContext(pidfile=pid):
+            server.main()
+
+
+if __name__ == "__main__":
+    sys.path.insert(0, '.')
+    main()

setup.cfg

@@ -24,6 +24,10 @@ packages =
 setup-hooks =
     pbr.hooks.setup_hook
 
+[entry_points]
+console_scripts =
+    geard = gear.cmd.geard:main
+
 [build_sphinx]
 all_files = 1
 build-dir = doc/build