api: add source detail retrieval

Change-Id: I031d237f870172e87b9bcb413573a0ad5c18afca
Signed-off-by: Julien Danjou <julien@danjou.info>

ceilometer/api/app.py

@@ -21,6 +21,7 @@
 import flask
 
 from ceilometer.openstack.common import cfg
+from ceilometer.openstack.common import jsonutils
 from ceilometer import storage
 from ceilometer.api import v1
 from ceilometer.api import acl
@@ -39,4 +40,11 @@ def attach_config():
     flask.request.storage_engine = storage_engine
     flask.request.storage_conn = storage_engine.get_connection(cfg.CONF)
 
+
+@app.before_request
+def attach_sources():
+    with open("sources.json", "r") as f:
+        flask.request.sources = jsonutils.load(f)
+
+
 acl.install(app)

ceilometer/api/v1.py

@@ -145,6 +145,15 @@ def list_all_resources():
     return _list_resources()
 
 
+@blueprint.route('/sources/<source>')
+def get_source(source):
+    """Return a source details.
+
+    :param source: The ID of the reporting source.
+    """
+    return flask.jsonify(flask.request.sources.get(source, {}))
+
+
 @blueprint.route('/sources/<source>/resources')
 def list_resources_by_source(source):
     """Return a list of resources for which a source is reporting

ceilometer/tests/api.py

@@ -25,6 +25,7 @@ import flask
 
 from ceilometer.tests import db as db_test_base
 from ceilometer.api import v1
+from ceilometer.api import app
 
 
 class TestBase(db_test_base.TestBase):
@@ -38,7 +39,8 @@ class TestBase(db_test_base.TestBase):
         @self.app.before_request
         def attach_storage_connection():
             flask.request.storage_conn = self.conn
-        return
+
+        self.app.before_request(app.attach_sources)
 
     def get(self, path, **kwds):
         if kwds:

tests/api/v1/test_list_sources.py

@@ -0,0 +1,39 @@
+# -*- encoding: utf-8 -*-
+#
+# Copyright © 2012 Julien Danjou
+#
+# Author: Julien Danjou <julien@danjou.info>
+#
+# 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.
+"""Test listing users.
+"""
+
+import datetime
+import logging
+
+from ceilometer import counter
+from ceilometer import meter
+
+from ceilometer.tests import api as tests_api
+
+
+class TestListSource(tests_api.TestBase):
+
+    def test_source(self):
+        ydata = self.get('/sources/test_source')
+        self.assert_("somekey" in ydata)
+        self.assertEqual(ydata["somekey"], 666)
+
+    def test_unknownsource(self):
+        ydata = self.get('/sources/test_source_that_does_not_exist')
+        self.assertEqual(ydata, {})

tests/sources.json

@@ -0,0 +1,6 @@
+{
+    "test_source":
+    {
+        "somekey": 666
+    }
+}