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#!/usr/bin/python
# vi: ts=4 expandtab
#
# Copyright (C) 2009-2010 Canonical Ltd.
#
# Author: Scott Moser <scott.moser@canonical.com>
#
# This program 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.
#
# This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
import subprocess
import sys
import cloudinit
import cloudinit.util as util
import cloudinit.CloudConfig as CC
import cloudinit.DataSource as ds
import cloudinit.netinfo as netinfo
import time
import logging
import errno
import os
def warn(wstr):
sys.stderr.write("WARN:%s" % wstr)
def main():
cmds = ( "start", "start-local" )
deps = { "start" : ( ds.DEP_FILESYSTEM, ds.DEP_NETWORK ),
"start-local" : ( ds.DEP_FILESYSTEM, ) }
cmd = ""
if len(sys.argv) > 1:
cmd = sys.argv[1]
cfg_path = None
if len(sys.argv) > 2:
# this is really for debugging only
# but you can invoke on development system with ./config/cloud.cfg
cfg_path = sys.argv[2]
if not cmd in cmds:
sys.stderr.write("bad command %s. use one of %s\n" % (cmd, cmds))
sys.exit(1)
now = time.strftime("%a, %d %b %Y %H:%M:%S %z",time.gmtime())
try:
uptimef=open("/proc/uptime")
uptime=uptimef.read().split(" ")[0]
uptimef.close()
except IOError as e:
warn("unable to open /proc/uptime\n")
uptime = "na"
try:
cfg = cloudinit.get_base_cfg(cfg_path)
except Exception as e:
warn("Failed to get base config. falling back to builtin: %s\n" % e)
try:
cfg = cloudinit.get_builtin_cfg()
except Exception as e:
warn("Unable to load builtin config\n")
raise
try:
(outfmt, errfmt) = CC.get_output_cfg(cfg,"init")
CC.redirect_output(outfmt, errfmt)
except Exception as e:
warn("Failed to get and set output config: %s\n" % e)
cloudinit.logging_set_from_cfg(cfg)
log = logging.getLogger()
try:
cloudinit.initfs()
except Exception as e:
warn("failed to initfs, likely bad things to come: %s\n" % str(e))
nonet_path = "%s/%s" % (cloudinit.get_cpath("data"), "no-net")
if cmd == "start":
print netinfo.debug_info()
stop_files = ( cloudinit.get_ipath_cur("obj_pkl"), nonet_path )
# if starting as the network start, there are cases
# where everything is already done for us, and it makes
# most sense to exit early and silently
for f in stop_files:
try:
fp = open(f,"r")
fp.close()
except:
continue
log.debug("no need for cloud-init start to run (%s)\n", f)
sys.exit(0)
elif cmd == "start-local":
# cache is not instance specific, so it has to be purged
# but we want 'start' to benefit from a cache if
# a previous start-local populated one
manclean = util.get_cfg_option_bool(cfg, 'manual_cache_clean',False)
if manclean:
log.debug("not purging cache, manual_cache_clean = True")
cloudinit.purge_cache(not manclean)
try:
os.unlink(nonet_path)
except OSError as e:
if e.errno != errno.ENOENT: raise
msg = "cloud-init %s running: %s. up %s seconds" % (cmd, now, uptime)
sys.stderr.write(msg + "\n")
sys.stderr.flush()
log.info(msg)
cloud = cloudinit.CloudInit(ds_deps=deps[cmd])
try:
cloud.get_data_source()
except cloudinit.DataSourceNotFoundException as e:
sys.stderr.write("no instance data found in %s\n" % cmd)
sys.exit(1)
# set this as the current instance
cloud.set_cur_instance()
# store the metadata
cloud.update_cache()
msg = "found data source: %s" % cloud.datasource
sys.stderr.write(msg + "\n")
log.debug(msg)
# parse the user data (ec2-run-userdata.py)
try:
ran = cloud.sem_and_run("consume_userdata", cloudinit.per_instance,
cloud.consume_userdata,[cloudinit.per_instance],False)
if not ran:
cloud.consume_userdata(cloudinit.per_always)
except:
warn("consuming user data failed!\n")
raise
cfg_path = cloudinit.get_ipath_cur("cloud_config")
cc = CC.CloudConfig(cfg_path, cloud)
# if the output config changed, update output and err
try:
outfmt_orig = outfmt
errfmt_orig = errfmt
(outfmt, errfmt) = CC.get_output_cfg(cc.cfg,"init")
if outfmt_orig != outfmt or errfmt_orig != errfmt:
warn("stdout, stderr changing to (%s,%s)" % (outfmt,errfmt))
CC.redirect_output(outfmt, errfmt)
except Exception as e:
warn("Failed to get and set output config: %s\n" % e)
# send the cloud-config ready event
cc_path = cloudinit.get_ipath_cur('cloud_config')
cc_ready = cc.cfg.get("cc_ready_cmd",
['initctl', 'emit', 'cloud-config',
'%s=%s' % (cloudinit.cfg_env_name, cc_path) ])
if cc_ready:
if isinstance(cc_ready,str):
cc_ready = [ 'sh', '-c', cc_ready]
subprocess.Popen(cc_ready).communicate()
module_list = CC.read_cc_modules(cc.cfg,"cloud_init_modules")
failures = []
if len(module_list):
failures = CC.run_cc_modules(cc,module_list,log)
else:
msg = "no cloud_init_modules to run"
sys.stderr.write(msg + "\n")
log.debug(msg)
sys.exit(0)
sys.exit(len(failures))
if __name__ == '__main__':
main()
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