refactor: Updated to most recent versions and production use

Author: eickler

Dockerfile

@@ -1,7 +1,7 @@
-FROM python:alpine3.6
+FROM python:alpine
 
 COPY application.py /
-RUN pip install flask==0.10.1
+RUN pip install flask waitress
 
 ENTRYPOINT ["python"]
 CMD ["-u", "application.py"]

README.md

@@ -1,44 +1,6 @@
 # Hello World of Cumulocity IoT Microservices
 
-Cumulocity IoT microservice example developed using Python and Docker.
-
-### Prerequisites
-
-*   Local Docker installation
-*   An account on [cumulocity.com](https://cumulocity.com). Create a free trial to test this example.
-
-### Build
-
-Execute the following commands to build the Docker image and save it as *image.tar*:
-
-```shell
-$ docker build -t python-microservice .
-$ docker save python-microservice > "image.tar"
-```
-
-Then pack *image.tar* together with the manifest *cumulocity.json* into a ZIP file.
-
-```shell
-$ zip python-microservice cumulocity.json image.tar
-```
-
-The resulting *python-microservice.zip* file contains the microservice and it is ready to be uploaded to the Cumulocity IoT platform.
-
-### Deployment
-
-Deploy the microservice application (refer to [Adding own applications](https://cumulocity.com/guides/users-guide/administration/#a-name-adding-applications-a-adding-own-applications) in the Cumulocity IoT's User guide) and subscribe it afterwards.
-
-It may take some minutes for the ZIP file to be uploaded. Once completed, the three endpoints of the microservice application can be tested.
-
-### Execution
-
-Use a web browser or a terminal command (e.g. cURL) to make a GET request to the microservice endpoints providing your user credentials.
-
-```http
-GET /service/python-microservice/environment
-Host: <TENANT_DOMAIN>
-Authorization: <AUTHORIZATION>
-```
+Cumulocity IoT microservice example developed using Python and Docker. For documentation and more information on running the example, please visit the [Cumulocity documentation](https://cumulocity.com/docs/microservice-sdk/http/#python-microservice).
 
 ______________________
-These tools are provided as-is and without warranty or support. They do not constitute part of the Software AG product suite. Users are free to use, fork and modify them, subject to the license agreement. While Software AG welcomes contributions, we cannot guarantee to include every contribution in the master project.	
+These tools are provided as-is and without warranty or support. They do not constitute part of the Software AG product suite. Users are free to use, fork and modify them, subject to the license agreement. While Software AG welcomes contributions, we cannot guarantee to include every contribution in the master project.

application.py

@@ -28,4 +28,7 @@ def environment():
     return jsonify(environment_data)
 
 if __name__ == '__main__':
-    app.run(host='0.0.0.0', port=80)
+    import logging
+    logging.basicConfig(level=logging.INFO)
+    from waitress import serve
+    serve(app, host="0.0.0.0", port=80)

cumulocity.json

@@ -1,12 +1,21 @@
 {
-    "apiVersion": "1",
-    "version": "1.0.0",
-    "provider": {
-        "name": "Cumulocity GmbH"
-    },
-    "isolation": "MULTI_TENANT",
-    "requiredRoles": [
-    ],
-    "roles": [
-    ]
+  "apiVersion": "2",
+  "version": "1.0.0",
+  "provider": {
+    "name": "Cumulocity"
+  },
+  "isolation": "MULTI_TENANT",
+  "replicas": 2,
+  "livenessProbe": {
+    "httpGet": {
+      "path": "/health"
+    }
+  },
+  "readinessProbe": {
+    "httpGet": {
+      "path": "/health"
+    }
+  },
+  "requiredRoles": [],
+  "roles": []
 }