67203a5497
When the metadata server starts first, it will wait for the engine to come up and only then registers it's hostname and port and becomes available. Signed-off-by: Tomas Sedovic <tomas@sedovic.cz>
76 lines
2.4 KiB
Python
Executable File
76 lines
2.4 KiB
Python
Executable File
#!/usr/bin/env python
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""
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Heat Metadata Server.
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This makes the instance metadata accessible both to the instance and Heat Engine.
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"""
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import gettext
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import os
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import sys
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# If ../heat/__init__.py exists, add ../ to Python search path, so that
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# it will override what happens to be installed in /usr/(local/)lib/python...
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possible_topdir = os.path.normpath(os.path.join(os.path.abspath(sys.argv[0]),
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os.pardir,
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os.pardir))
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if os.path.exists(os.path.join(possible_topdir, 'heat', '__init__.py')):
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sys.path.insert(0, possible_topdir)
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gettext.install('heat', unicode=1)
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import logging
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from heat import rpc
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from heat.common import config
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from heat.common import wsgi
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from heat import context
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from paste import httpserver
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LOG = logging.getLogger('heat.metadata')
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def send_address_to_engine(host, port):
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con = context.get_admin_context()
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while True:
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try:
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resp = rpc.call(con, 'engine',
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{'method': 'metadata_register_address',
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'args': {'url': 'http://%s:%s' % (host, port)}})
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LOG.info('registered the hostname and port with the engine.')
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return
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except rpc.common.Timeout:
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LOG.info('Could not connect to the engine, retrying...')
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if __name__ == '__main__':
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try:
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conf = config.HeatMetadataConfigOpts()
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conf()
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config.FLAGS = conf
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rpc.configure(conf)
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config.setup_logging(conf)
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app = config.load_paste_app(conf)
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port = conf.bind_port
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host = conf.bind_host
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send_address_to_engine(host, port)
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LOG.info(('Starting Heat Metadata on %s:%s') % (host, port))
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httpserver.serve(app, host=host, port=port)
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except RuntimeError, e:
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sys.exit("ERROR: %s" % e)
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