Tomas Sedovic 6029c031ea Use eventlet's wsgi again
Ref #55

This adds a monkey patch for the eventlet's maximum url length issue (ref #18).
With it, we can use eventlet as our wsgi server again.

Once Eventlet releases a new version (the fix is already in master) we'll drop
the monkey patch and set the limit proper.

Change-Id: Ia122af8d53b49587ade0ead6897fdd10107f4a87
Signed-off-by: Tomas Sedovic <tomas@sedovic.cz>
2012-07-18 13:34:35 +02:00

83 lines
2.6 KiB
Executable File

#!/usr/bin/env python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
# http://www.apache.org/licenses/LICENSE-2.0
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
Heat Metadata Server.
This makes the instance metadata accessible both to the instance and Heat Engine.
import gettext
import os
import sys
# If ../heat/__init__.py exists, add ../ to Python search path, so that
# it will override what happens to be installed in /usr/(local/)lib/python...
possible_topdir = os.path.normpath(os.path.join(os.path.abspath(sys.argv[0]),
if os.path.exists(os.path.join(possible_topdir, 'heat', '__init__.py')):
sys.path.insert(0, possible_topdir)
gettext.install('heat', unicode=1)
from heat.openstack.common import rpc
from heat.common import config
from heat.common import wsgi
from heat.common import context
from heat.openstack.common import log as logging
from heat.openstack.common import cfg
LOG = logging.getLogger('heat.metadata')
def send_address_to_engine(host, port):
con = context.get_admin_context()
timeout = 2
while True:
resp = rpc.call(con, 'engine',
{'method': 'metadata_register_address',
'args': {'url': 'http://%s:%s' % (host, port)}},
except rpc.common.Timeout:
LOG.info('Could not connect to the engine, retrying...')
if timeout < 30:
timeout *= 2
LOG.info('registered the hostname and port with the engine.')
if __name__ == '__main__':
cfg.CONF(project='heat', prog='heat-metadata')
app = config.load_paste_app()
port = cfg.CONF.bind_port
host = cfg.CONF.bind_host
send_address_to_engine(host, port)
LOG.info(('Starting Heat Metadata on %s:%s') % (host, port))
server = wsgi.Server()
server.start(app, cfg.CONF, default_port=port)
except RuntimeError, e:
sys.exit("ERROR: %s" % e)