83 lines
2.3 KiB
Python
Executable File
83 lines
2.3 KiB
Python
Executable File
#!/usr/bin/python
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# vi: ts=4 expandtab
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#
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# Copyright (C) 2009-2010 Canonical Ltd.
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#
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# Author: Scott Moser <scott.moser@canonical.com>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License version 3, as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import sys
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import cloudinit
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import logging
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def Usage(out = sys.stdout):
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out.write("Usage: cloud-init-run-module freq sem-name mod-name [args]\n")
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def main():
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# expect to be called with
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# <freq> <semaphore-name> <module-name> args
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if len(sys.argv) < 4:
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Usage(sys.stderr)
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sys.exit(1)
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(freq,semname,modname)=sys.argv[1:4]
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run_args=sys.argv[4:]
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cloudinit.logging_set_from_cfg_file()
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log = logging.getLogger()
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log.info("cloud-init-run-module %s" % sys.argv[1:])
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cloud = cloudinit.CloudInit()
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try:
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cloud.get_data_source()
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except Exception as e:
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fail("Failed to get instance data\n\t%s" % traceback.format_exc(),log)
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if cloud.sem_has_run(semname,freq):
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msg="%s already ran %s" % (semname,freq)
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sys.stderr.write("%s\n" % msg)
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log.debug(msg)
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sys.exit(0)
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try:
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mod = __import__('cloudinit.' + modname)
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inst = getattr(mod,modname)
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except:
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fail("Failed to load module cloudinit.%s\n" % modname)
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import os
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cfg_path = None
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cfg_env_name = cloudinit.cfg_env_name
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if os.environ.has_key(cfg_env_name):
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cfg_path = os.environ[cfg_env_name]
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try:
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cloud.sem_and_run(semname, freq, inst.run, [run_args,cfg_path,log], False)
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except Exception as e:
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fail("Execution of %s failed:%s" % (semname,e), log)
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sys.exit(0)
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def err(msg,log=None):
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if log:
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log.error(msg)
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sys.stderr.write(msg + "\n")
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def fail(msg,log=None):
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err(msg,log)
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sys.exit(1)
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if __name__ == '__main__':
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main()
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