First Version

modules/notification/__init__.py

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+import json
+from flask_classy import FlaskView, route
+from modules import cbpi
+class NotificationView(FlaskView):
+
+    @route('/', methods=['GET'])
+    def getMessages(self):
+        """
+        Get all messages
+        :return: current messages
+        """
+
+        return json.dumps(cbpi.cache["messages"])
+
+    @route('/<id>', methods=['DELETE'])
+    def dismiss(self, id):
+        """
+        Delete message from cache by id
+        :param id: message id to be deleted
+        :return: empty response HTTP 204
+        """
+        for idx, m in enumerate(cbpi.cache.get("messages", [])):
+            if (m.get("id") == id):
+                cbpi.cache["messages"].pop(idx)
+        return ('', 204)
+
+@cbpi.event("MESSAGE", async=True)
+def messageEvent(message, **kwargs):
+    """
+    React on message event. add the message to the cache and push the message to the clients
+    :param message: the message
+    :param kwargs: other parameter
+    :return: None
+    """
+
+    msg = {"id": len(cbpi.cache["messages"]), "type": "info", "message": message, "read": False}
+    cbpi.cache["messages"].append(msg)
+    cbpi.emit('MESSAGE', msg,)
+
+@cbpi.initalizer(order=2)
+def init(cbpi):
+    """
+    Initializer for the message module
+    :param app: the flask app
+    :return: None
+    """
+    print "INITIALIZE MESSAGE MODULE"
+
+    msg = {"id": len(cbpi.cache["messages"]), "type": "info", "headline": "Support CraftBeerPi with your donation", "message": "You will find the PayPay Donation button in the system menu" , "read": False}
+    cbpi.cache["messages"].append(msg)
+
+    NotificationView.register(cbpi.app, route_base='/api/notification')