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Unified Diff: sitescripts/management/bin/start_services.py

Issue 8963083: sitescripts: Script to keep services alive (Closed)
Patch Set: Created Nov. 30, 2012, 9:48 a.m.
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Index: sitescripts/management/bin/start_services.py
===================================================================
new file mode 100644
--- /dev/null
+++ b/sitescripts/management/bin/start_services.py
@@ -0,0 +1,56 @@
+# coding: utf-8
+
+# This file is part of the Adblock Plus web scripts,
+# Copyright (C) 2006-2012 Eyeo GmbH
+#
+# Adblock Plus is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 3 as
+# published by the Free Software Foundation.
+#
+# Adblock Plus is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Adblock Plus. If not, see <http://www.gnu.org/licenses/>.
+
+import os, subprocess
+from sitescripts.utils import get_config
+
+def _get_services():
+ config = get_config()
+ section_name = "keep_alive_services"
+ section_keys = config.options(section_name)
+ default_keys = config.defaults().keys()
+ keys = set(section_keys) - set(default_keys)
Wladimir Palant 2012/11/30 10:46:07 Strange indentation here, one space instead of two
Felix Dahlke 2012/11/30 13:32:28 Done.
+
+ services = {}
+ for key in keys:
+ services[key] = config.get(section_name, key)
+ return services
+
+def _process_running(pid):
+ return os.path.isdir(os.path.join("/proc", str(pid)))
Wladimir Palant 2012/11/30 10:46:07 I might have preferred os.kill(..., 0) but this wi
Felix Dahlke 2012/11/30 13:32:28 Didn't know that trick, using it now.
+
+if __name__ == "__main__":
+ services = _get_services()
+ for service in services.keys():
+ pid_path = os.path.join("/var/run", services[service])
+ if os.path.exists(pid_path):
+ with open(pid_path) as file: pid_string = file.read()
Wladimir Palant 2012/11/30 10:46:07 Does this really have to be all on one line?
Felix Dahlke 2012/11/30 13:32:28 Done.
+
+ try:
+ pid = int(pid_string.rstrip())
+ if _process_running(pid):
+ continue
+ except exceptions.ValueError:
+ print "'%s' is not a PID." % pid_string
+
+ init_path = os.path.join("/etc/init.d", service)
+ if not os.path.exists(init_path):
+ print "%s does not exist, service is not running and cannot be started." % init_path
+ continue
+
+ print "%s is not running, starting ..." % service
+ subprocess.call([init_path, "start"])
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