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# Copyright (C) 2012 Canonical Ltd.
# Copyright (C) 2012 Hewlett-Packard Development Company, L.P.
# Copyright (C) 2012 Yahoo! Inc.
#
# Author: Scott Moser <[email protected]>
# Author: Juerg Haefliger <[email protected]>
# Author: Joshua Harlow <[email protected]>
#
# This file is part of cloud-init. See LICENSE file for license information.
import logging
import os
from cloudinit import handlers, subp, util
from cloudinit.settings import PER_ALWAYS
LOG = logging.getLogger(__name__)
class BootHookPartHandler(handlers.Handler):
# The content prefixes this handler understands.
prefixes = ["#cloud-boothook"]
def __init__(self, paths, datasource, **_kwargs):
handlers.Handler.__init__(self, PER_ALWAYS)
self.boothook_dir = paths.get_ipath("boothooks")
self.instance_id = None
if datasource:
self.instance_id = datasource.get_instance_id()
def _write_part(self, payload, filename):
filename = util.clean_filename(filename)
filepath = os.path.join(self.boothook_dir, filename)
contents = util.strip_prefix_suffix(
util.dos2unix(payload), prefix=self.prefixes[0]
)
util.write_file(filepath, contents.lstrip(), 0o700)
return filepath
def handle_part(self, data, ctype, filename, payload, frequency):
if ctype in handlers.CONTENT_SIGNALS:
return
filepath = self._write_part(payload, filename)
try:
env = (
{"INSTANCE_ID": str(self.instance_id)}
if self.instance_id
else {}
)
LOG.debug("Executing boothook")
subp.subp([filepath], update_env=env, capture=False)
except subp.ProcessExecutionError:
util.logexc(LOG, "Boothooks script %s execution error", filepath)
except Exception:
util.logexc(
LOG, "Boothooks unknown error when running %s", filepath
)
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