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# Copyright (C) 2009-2011 Canonical Ltd.
# Copyright (C) 2012 Hewlett-Packard Development Company, L.P.
#
# Author: Scott Moser <scott.moser@canonical.com>
# Author: Juerg Haefliger <juerg.haefliger@hp.com>
#
# This file is part of cloud-init. See LICENSE file for license information.
"""
Emit Upstart
------------
**Summary:** emit upstart configuration
Emit upstart configuration for cloud-init modules on upstart based systems. No
user configuration should be required.
**Internal name:** ``cc_emit_upstart``
**Module frequency:** per always
**Supported distros:** ubuntu, debian
"""
import os
from cloudinit import log as logging
from cloudinit.settings import PER_ALWAYS
from cloudinit import subp
frequency = PER_ALWAYS
distros = ['ubuntu', 'debian']
LOG = logging.getLogger(__name__)
def is_upstart_system():
if not os.path.isfile("/sbin/initctl"):
LOG.debug("no /sbin/initctl located")
return False
myenv = os.environ.copy()
if 'UPSTART_SESSION' in myenv:
del myenv['UPSTART_SESSION']
check_cmd = ['initctl', 'version']
try:
(out, _err) = subp.subp(check_cmd, env=myenv)
return 'upstart' in out
except subp.ProcessExecutionError as e:
LOG.debug("'%s' returned '%s', not using upstart",
' '.join(check_cmd), e.exit_code)
return False
def handle(name, _cfg, cloud, log, args):
event_names = args
if not event_names:
# Default to the 'cloud-config'
# event for backwards compat.
event_names = ['cloud-config']
if not is_upstart_system():
log.debug("not upstart system, '%s' disabled", name)
return
cfgpath = cloud.paths.get_ipath_cur("cloud_config")
for n in event_names:
cmd = ['initctl', 'emit', str(n), 'CLOUD_CFG=%s' % cfgpath]
try:
subp.subp(cmd)
except Exception as e:
# TODO(harlowja), use log exception from utils??
log.warning("Emission of upstart event %s failed due to: %s", n, e)
# vi: ts=4 expandtab