4d6d5abd9e
by default we call 'pollinate -q' which is nice and quiet. if the user wants to be noisy, let them.
94 lines
3.1 KiB
Python
94 lines
3.1 KiB
Python
# vi: ts=4 expandtab
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#
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# Copyright (C) 2013 Yahoo! Inc.
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# Copyright (C) 2014 Canonical, Ltd
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#
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# Author: Joshua Harlow <harlowja@yahoo-inc.com>
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# Author: Dustin Kirkland <kirkland@ubuntu.com>
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# Author: Scott Moser <scott.moser@canonical.com>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License version 3, as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import base64
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import os
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from StringIO import StringIO
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from cloudinit.settings import PER_INSTANCE
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from cloudinit import log as logging
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from cloudinit import util
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frequency = PER_INSTANCE
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LOG = logging.getLogger(__name__)
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def _decode(data, encoding=None):
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if not data:
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return ''
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if not encoding or encoding.lower() in ['raw']:
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return data
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elif encoding.lower() in ['base64', 'b64']:
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return base64.b64decode(data)
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elif encoding.lower() in ['gzip', 'gz']:
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return util.decomp_gzip(data, quiet=False)
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else:
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raise IOError("Unknown random_seed encoding: %s" % (encoding))
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def handle_random_seed_command(command, required, env=None):
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if not command and required:
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raise ValueError("no command found but required=true")
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elif not command:
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LOG.debug("no command provided")
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return
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cmd = command[0]
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if not util.which(cmd):
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if required:
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raise ValueError("command '%s' not found but required=true", cmd)
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else:
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LOG.debug("command '%s' not found for seed_command", cmd)
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return
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util.subp(command, env=env, capture=False)
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def handle(name, cfg, cloud, log, _args):
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mycfg = cfg.get('random_seed', {})
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seed_path = mycfg.get('file', '/dev/urandom')
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seed_data = mycfg.get('data', '')
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seed_buf = StringIO()
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if seed_data:
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seed_buf.write(_decode(seed_data, encoding=mycfg.get('encoding')))
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# 'random_seed' is set up by Azure datasource, and comes already in
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# openstack meta_data.json
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metadata = cloud.datasource.metadata
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if metadata and 'random_seed' in metadata:
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seed_buf.write(metadata['random_seed'])
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seed_data = seed_buf.getvalue()
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if len(seed_data):
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log.debug("%s: adding %s bytes of random seed entropy to %s", name,
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len(seed_data), seed_path)
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util.append_file(seed_path, seed_data)
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command = mycfg.get('command', ['pollinate', '-q'])
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req = mycfg.get('command_required', False)
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try:
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env = os.environ.copy()
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env['RANDOM_SEED_FILE'] = seed_path
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handle_random_seed_command(command=command, required=req, env=env)
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except ValueError as e:
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log.warn("handling random command [%s] failed: %s", command, e)
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raise e
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