From f35da406871f506eef549a2debabaac5343e283f Mon Sep 17 00:00:00 2001
From: Henning Jacobs <henning@jacobs1.de>
Date: Fri, 6 Jan 2017 23:47:02 +0100
Subject: [PATCH] #49 REDIS_URL configuration

---
 README.rst             | 4 +++-
 app.py                 | 4 ++--
 deploy/deployment.yaml | 3 +++
 3 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/README.rst b/README.rst
index aea8293..a7eed1c 100644
--- a/README.rst
+++ b/README.rst
@@ -106,12 +106,14 @@ The following environment variables are supported:
     Set to "true" for local development to reload code changes.
 ``MOCK``
     Set to "true" to mock Kubernetes cluster data.
+``REDIS_URL``
+    Optional Redis server to use for pub/sub events and job locking when running more than one replica.
 
 
 Supported Browsers
 ==================
 
-The UI uses WebGL and ECMAScript 6 features.
+The UI uses WebGL, ECMAScript 6, and EventSource features.
 The following browsers are known to work:
 
 * Chrome/Chromium 53.0+
diff --git a/app.py b/app.py
index 5f97c41..01201a1 100755
--- a/app.py
+++ b/app.py
@@ -24,6 +24,7 @@ from flask import Flask, redirect
 from flask_oauthlib.client import OAuth, OAuthRemoteApp
 from urllib.parse import urljoin
 
+logging.basicConfig(level=logging.INFO)
 
 class MemoryStore:
     def __init__(self):
@@ -54,7 +55,7 @@ class MemoryStore:
 
 class RedisStore:
     def __init__(self, url):
-        self._url = url
+        logging.info('Connecting to Redis on {}..'.format(url))
         self._redis = redis.StrictRedis.from_url(url)
         self._redlock = Redlock([url])
 
@@ -375,7 +376,6 @@ def update():
 
 
 if __name__ == '__main__':
-    logging.basicConfig(level=logging.INFO)
     http_server = gevent.wsgi.WSGIServer(('0.0.0.0', SERVER_PORT), app)
     gevent.spawn(update)
     logging.info('Listening on :{}..'.format(SERVER_PORT))
diff --git a/deploy/deployment.yaml b/deploy/deployment.yaml
index ddd55b3..fb87f06 100644
--- a/deploy/deployment.yaml
+++ b/deploy/deployment.yaml
@@ -28,6 +28,9 @@ spec:
             port: 8080
           initialDelaySeconds: 5
           timeoutSeconds: 1
+        env:
+        - name: REDIS_URL
+          value: kube-ops-view-redis:6379
         resources:
           limits:
             cpu: 200m