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#!/usr/bin/python
import sys
import cloudinit
def Usage(out = sys.stdout):
out.write("Usage: cloud-init-run-module freq sem-name mod-name [args]\n")
def main():
# expect to be called with
# <freq> <semaphore-name> <module-name> args
if len(sys.argv) < 4:
Usage(sys.stderr)
sys.exit(1)
(freq,semname,modname)=sys.argv[1:4]
run_args=sys.argv[4:]
cloud = cloudinit.EC2Init()
try:
cloud.get_data_source()
except Exception as e:
print e
sys.stderr.write("Failed to get instance data")
sys.exit(1)
if cloud.sem_has_run(semname,freq):
sys.stderr.write("%s already ran %s\n" % (semname,freq))
sys.exit(0)
try:
mod = __import__('cloudinit.' + modname)
inst = getattr(mod,modname)
except:
sys.stderr.write("Failed to load module cloudinit.%s\n" % modname)
sys.exit(1)
import os
cfg_path = None
cfg_env_name = cloudinit.cfg_env_name
if os.environ.has_key(cfg_env_name):
cfg_path = os.environ[cfg_env_name]
cloud.sem_and_run(semname, freq, inst.run, [run_args,cfg_path], False)
sys.exit(0)
if __name__ == '__main__':
main()
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