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#!/usr/bin/env python
# pylint: disable-msg=C0103
# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2010 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# All Rights Reserved.
#
# 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.
"""Starter script for Nova API."""
import gettext
import logging
import os
import sys
from paste import deploy
# If ../nova/__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]),
os.pardir,
os.pardir))
if os.path.exists(os.path.join(possible_topdir, 'nova', '__init__.py')):
sys.path.insert(0, possible_topdir)
gettext.install('nova', unicode=1)
from nova import flags
from nova import wsgi
LOG = logging.getLogger('nova.api')
LOG.setLevel(logging.DEBUG)
LOG.addHandler(logging.StreamHandler())
FLAGS = flags.FLAGS
API_ENDPOINTS = ['ec2', 'openstack']
def load_configuration(paste_config):
"""Load the paste configuration from the config file and return it."""
config = None
# Try each known name to get the global DEFAULTS, which will give ports
for name in API_ENDPOINTS:
try:
config = deploy.appconfig("config:%s" % paste_config, name=name)
except LookupError:
pass
if config:
verbose = config.get('verbose', None)
if verbose:
FLAGS.verbose = int(verbose) == 1
if FLAGS.verbose:
logging.getLogger().setLevel(logging.DEBUG)
return config
LOG.debug(_("Paste config at %s has no secion for known apis"),
paste_config)
print _("Paste config at %s has no secion for any known apis") % \
paste_config
os.exit(1)
def launch_api(paste_config_file, section, server, port, host):
"""Launch an api server from the specified port and IP."""
LOG.debug(_("Launching %s api on %s:%s"), section, host, port)
app = deploy.loadapp('config:%s' % paste_config_file, name=section)
server.start(app, int(port), host)
def run_app(paste_config_file):
LOG.debug(_("Using paste.deploy config at: %s"), configfile)
config = load_configuration(paste_config_file)
LOG.debug(_("Configuration: %r"), config)
server = wsgi.Server()
ip = config.get('host', '0.0.0.0')
for api in API_ENDPOINTS:
port = config.get("%s_port" % api, None)
if not port:
continue
host = config.get("%s_host" % api, ip)
launch_api(configfile, api, server, port, host)
LOG.debug(_("All api servers launched, now waiting"))
server.wait()
if __name__ == '__main__':
FLAGS(sys.argv)
configfiles = ['/etc/nova/nova-api.conf']
if os.path.exists(os.path.join(possible_topdir, 'nova', '__init__.py')):
configfiles.insert(0,
os.path.join(possible_topdir, 'etc', 'nova-api.conf'))
for configfile in configfiles:
if os.path.exists(configfile):
run_app(configfile)
break
else:
LOG.debug(_("Skipping missing configuration: %s"), configfile)
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