Refactoring: Made complete codebase PEP8 compatible.

[osm/vim-emu.git] / src / emuvim / cli / prometheus.py

diff --git a/src/emuvim/cli/prometheus.py b/src/emuvim/cli/prometheus.py
index 8d87d89..82fa5bd 100755 (executable)
--- a/src/emuvim/cli/prometheus.py
+++ b/src/emuvim/cli/prometheus.py
@@ -1,12 +1,38 @@
-"""
-Prometheus API helper functions
-(c) 2016 by Steven Van Rossem <steven.vanrossem@intec.ugent.be>
-"""
+# Copyright (c) 2015 SONATA-NFV and Paderborn University
+# 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.
+#
+# Neither the name of the SONATA-NFV, Paderborn University
+# nor the names of its contributors may be used to endorse or promote
+# products derived from this software without specific prior written
+# permission.
+#
+# This work has been performed in the framework of the SONATA project,
+# funded by the European Commission under Grant number 671517 through
+# the Horizon 2020 and 5G-PPP programmes. The authors would like to
+# acknowledge the contributions of their colleagues of the SONATA
+# partner consortium (www.sonata-nfv.eu).
+import requests
 
-import urllib2
-import ast
 
-prometheus_ip = '0.0.0.0'
+# set this to localhost for now
+# this is correct for son-emu started outside of a container or as a container with net=host
+# TODO if prometheus sdk DB is started outside of emulator, place these
+# globals in an external SDK config file?
+prometheus_ip = 'localhost'
+# when sdk is started with docker-compose, we could use
+# prometheus_ip = 'prometheus'
 prometheus_port = '9090'
 prometheus_REST_api = 'http://{0}:{1}'.format(prometheus_ip, prometheus_port)
 
@@ -14,15 +40,14 @@ prometheus_REST_api = 'http://{0}:{1}'.format(prometheus_ip, prometheus_port)
 def query_Prometheus(query):
     url = prometheus_REST_api + '/' + 'api/v1/query?query=' + query
     # logging.info('query:{0}'.format(url))
-    req = urllib2.Request(url)
-    ret = urllib2.urlopen(req).read()
-    ret = ast.literal_eval(ret)
+    req = requests.get(url)
+    ret = req.json()
     if ret['status'] == 'success':
         # logging.info('return:{0}'.format(ret))
         try:
             ret = ret['data']['result'][0]['value']
-        except:
+        except BaseException:
             ret = None
     else:
         ret = None
-    return ret
\ No newline at end of file
+    return ret