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