A trivial guestbook app

Functions for GET and POST endpoints. A redis.yaml to deploy redis on kubernetes. And a deploy.sh to deploy the fission functions with routes.
2017-01-18 15:30:51 -08:00
parent 9ffba72c11
commit 928d96c080
4 changed files with 104 additions and 0 deletions
@@ -0,0 +1,16 @@
 #
 # Handles POST /guestbook -- adds item to guestbook 
 #
 from flask import request, redirect
 import redis
 # Connect to redis.
 redisConnection = redis.StrictRedis(host='redis.guestbook', port=6379, db=0)
 def main():
    # Read the item from POST params, add it to redis, and redirect
    # back to the list
    item = request.form['text']
    redisConnection.rpush('guestbook', item)
    return redirect('/guestbook', code=303)
@@ -0,0 +1,15 @@
 #!/bin/sh
 set -e
 kubectl create -f redis.yaml
 if [ -z "$FISSION_URL" ]
 then
    echo "Need $FISSION_URL set to a fission controller address"
    exit 1
 fi
 fission env create --name python --image fission/python-env
 fission function create --name guestbook-get --env python --code get.py --url /guestbook --method GET
 fission function create --name guestbook-add --env python --code add.py --url /guestbook --method POST
@@ -0,0 +1,28 @@
 #
 # Handles GET /guestbook -- returns a list of items in the guestbook
 # with a form to add more.
 #
 from flask import current_app, escape
 import redis
 # Connect to redis.  This is run only when this file is loaded; as
 # long as the pod is alive, the connection is reused.
 redisConnection = redis.StrictRedis(host='redis.guestbook', port=6379, db=0)
 def main():
    messages = redisConnection.lrange('guestbook', 0, -1)
    items = [("<li>%s</li>" % escape(m.decode('utf-8'))) for m in messages]
    ul = "<ul>%s</ul>" % "\n".join(items)
    return """
      <html><body>
          <h1>Guestbook</h1>      
          <form action="/guestbook" method="POST">
            <input type="text" name="text">
            <button type="submit">Add</button>
          </form>
          <hr/>
          %s
      </body></html>
      """ % ul
@@ -0,0 +1,45 @@
 apiVersion: v1
 kind: Namespace
 metadata:
  name: guestbook
  labels:
    name: guestbook
 ---
 apiVersion: extensions/v1beta1
 kind: Deployment
 metadata:
  labels:
    run: redis
  name: redis
  namespace: guestbook
 spec:
  replicas: 1
  selector:
    matchLabels:
      run: redis
  template:
    metadata:
      labels:
        run: redis
    spec:
      containers:
      - image: redis
        name: redis
 ---
 apiVersion: v1
 kind: Service
 metadata:
  labels:
    run: redis
  name: redis
  namespace: guestbook
 spec:
  selector:
    run: redis
  type: ClusterIP
  ports:
  - port: 6379
    protocol: TCP
    targetPort: 6379