Use pbr wsgi_scripts to build aodh-api

Change-Id: Iefd6f4d9f76c69ed9b49483e1feda0b7dbe2cb81

aodh/api/__init__.py

@@ -17,14 +17,6 @@ from oslo_config import cfg
 
 # Register options for the service
 OPTS = [
-    cfg.PortOpt('port',
-                default=8042,
-                help='The port for the aodh API server.',
-                ),
-    cfg.StrOpt('host',
-               default='0.0.0.0',
-               help='The listen IP for the aodh API server.',
-               ),
     cfg.StrOpt('paste_config',
                default="api_paste.ini",
                help="Configuration file for WSGI definition of API."),

aodh/api/app.py

@@ -1,6 +1,6 @@
 #
 # Copyright 2012 New Dream Network, LLC (DreamHost)
-# Copyright 2015 Red Hat, Inc.
+# Copyright 2015-2016 Red Hat, Inc.
 #
 # 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
@@ -20,12 +20,9 @@ from oslo_config import cfg
 from oslo_log import log
 from paste import deploy
 import pecan
-from werkzeug import serving
 
 from aodh.api import hooks
 from aodh.api import middleware
-from aodh.i18n import _
-from aodh.i18n import _LW
 from aodh import service
 from aodh import storage
 
@@ -51,16 +48,9 @@ def setup_app(pecan_config=PECAN_CONFIG, conf=None):
 
     pecan.configuration.set_config(dict(pecan_config), overwrite=True)
 
-    # NOTE(sileht): pecan debug won't work in multi-process environment
-    pecan_debug = conf.api.pecan_debug
-    if conf.api.workers != 1 and pecan_debug:
-        pecan_debug = False
-        LOG.warning(_LW('pecan_debug cannot be enabled, if workers is > 1, '
-                        'the value is overrided with False'))
-
     app = pecan.make_app(
         pecan_config['app']['root'],
-        debug=pecan_debug,
+        debug=conf.api.pecan_debug,
         hooks=app_hooks,
         wrap_app=middleware.ParsableErrorMiddleware,
         guess_content_type_from_ext=False
@@ -84,25 +74,8 @@ def load_app(conf):
     return deploy.loadapp("config:" + cfg_file)
 
 
-def build_server(conf):
-    app = load_app(conf)
-    # Create the WSGI server and start it
-    host, port = conf.api.host, conf.api.port
-
-    LOG.info(_('Starting server in PID %s') % os.getpid())
-    LOG.info(_("Configuration:"))
-    conf.log_opt_values(LOG, log.INFO)
-
-    if host == '0.0.0.0':
-        LOG.info(_(
-            'serving on 0.0.0.0:%(sport)s, view at http://127.0.0.1:%(vport)s')
-            % ({'sport': port, 'vport': port}))
-    else:
-        LOG.info(_("serving on http://%(host)s:%(port)s") % (
-                 {'host': host, 'port': port}))
-
-    serving.run_simple(host, port,
-                       app, processes=conf.api.workers)
+def build_wsgi_app(argv=None):
+    return load_app(service.prepare_service(argv=argv))
 
 
 def _app():

aodh/api/app.wsgi

@@ -19,9 +19,5 @@
 See http://pecan.readthedocs.org/en/latest/deployment.html for details.
 """
 from aodh.api import app
-from aodh import service
 
-
-# Initialize the oslo configuration library and logging
-conf = service.prepare_service([])
-application = app.load_app(conf)
+application = app.build_wsgi_app(argv=[])

aodh/cmd/api.py

@@ -1,24 +0,0 @@
-# -*- encoding: utf-8 -*-
-#
-# Copyright 2014 OpenStack Foundation
-# Copyright 2015 Red Hat, Inc.
-#
-# 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.
-
-from aodh.api import app
-from aodh import service
-
-
-def main():
-    conf = service.prepare_service()
-    app.build_server(conf)

aodh/tests/functional/api/test_app.py

@@ -35,25 +35,3 @@ class TestApp(base.BaseTestCase):
             ff.return_value = None
             self.assertRaises(cfg.ConfigFilesNotFoundError,
                               app.load_app, self.CONF)
-
-    @mock.patch('aodh.storage.get_connection_from_config',
-                mock.MagicMock())
-    @mock.patch('pecan.make_app')
-    def test_pecan_debug(self, mocked):
-        def _check_pecan_debug(g_debug, p_debug, expected, workers=1):
-            self.CONF.set_override('debug', g_debug)
-            if p_debug is not None:
-                self.CONF.set_override('pecan_debug', p_debug, group='api')
-            self.CONF.set_override('workers', workers, 'api')
-            app.setup_app(conf=self.CONF)
-            args, kwargs = mocked.call_args
-            self.assertEqual(expected, kwargs.get('debug'))
-
-        _check_pecan_debug(g_debug=False, p_debug=None, expected=False)
-        _check_pecan_debug(g_debug=True, p_debug=None, expected=False)
-        _check_pecan_debug(g_debug=True, p_debug=False, expected=False)
-        _check_pecan_debug(g_debug=False, p_debug=True, expected=True)
-        _check_pecan_debug(g_debug=True, p_debug=None, expected=False,
-                           workers=5)
-        _check_pecan_debug(g_debug=False, p_debug=True, expected=False,
-                           workers=5)

devstack/plugin.sh

@@ -23,7 +23,7 @@ fi
 
 if [ -z "$AODH_DEPLOY" ]; then
     # Default
-    AODH_DEPLOY=werkzeug
+    AODH_DEPLOY=simple
 
     # Fallback to common wsgi devstack configuration
     if [ "$ENABLE_HTTPD_MOD_WSGI_SERVICES" == "True" ]; then

devstack/settings

@@ -23,7 +23,7 @@ AODH_SERVICE_PORT=${AODH_SERVICE_PORT:-8042}
 
 # AODH_DEPLOY defines how Aodh is deployed, allowed values:
 # - mod_wsgi : Run Aodh under Apache HTTPd mod_wsgi
-# - werkzeug : Run aodh-api
+# - simple : Run aodh-api
 # - uwsgi : Run Aodh under uwsgi
 # - <empty>: Fallback to AODH_USE_MOD_WSGI or ENABLE_HTTPD_MOD_WSGI_SERVICES
 AODH_DEPLOY=${AODH_DEPLOY}

requirements.txt

@@ -30,6 +30,5 @@ requests>=2.5.2
 six>=1.9.0
 stevedore>=1.5.0 # Apache-2.0
 tooz>=1.28.0 # Apache-2.0
-Werkzeug>=0.7 # BSD License
 WebOb>=1.2.3
 WSME>=0.8

setup.cfg

@@ -105,8 +105,10 @@ aodh.notifier =
     trust+https = aodh.notifier.trust:TrustRestAlarmNotifier
     zaqar = aodh.notifier.zaqar:ZaqarAlarmNotifier
 
+wsgi_scripts =
+    aodh-api = aodh.api.app:build_wsgi_app
+
 console_scripts =
-    aodh-api = aodh.cmd.api:main
     aodh-dbsync = aodh.cmd.storage:dbsync
     aodh-expirer = aodh.cmd.storage:expirer
     aodh-evaluator = aodh.cmd.alarm:evaluator