Added Network Metrics Retrieval microservice

network-metrics-retrieval-microservice/Dockerfile

+FROM python:3
+LABEL maintainer="Alexander Lercher"
+
+ENV http_proxy http://proxy.uni-klu.ac.at:3128/
+ENV https_proxy http://proxy.uni-klu.ac.at:3128/
+
+RUN apt-get update
+RUN pip install flask
+RUN pip install connexion[swagger-ui]
+
+EXPOSE 5000
+
+WORKDIR /app
+COPY app/ /app/
+RUN chmod a+x main.py
+
+CMD ["python", "./main.py"]
\ No newline at end of file

network-metrics-retrieval-microservice/README.md

+# Network Metrics Retrieval Microservice
+The network metrics retrieval microservice is used as an interface to the provisioning and orchestration platform (CONF). It receives and preprocesses all available metrics and information about the network, like physical locations of virtual machine instances.
+
+## Technologies
+- Python 3.x
+- Python module Flask
+- Python module Connexion with Swagger
+- Docker
+- Kubernetes
\ No newline at end of file

network-metrics-retrieval-microservice/app/configs/swagger.yml

+swagger: "2.0"
+info:
+  title: Network Metrics Retrieval microservice
+  description: This is the documentation for the network metrics retrieval microservice.
+  version: "1.0.0"
+
+consumes:
+  - "application/json"
+produces:
+  - "application/json"
+
+basePath: "/api"
+
+paths:
+  /debug:
+    post:
+      operationId: "debug.echo"
+      tags:
+        - "Echo"
+      summary: "Echo function for debugging purposes"
+      description: "Echoes the input back to the caller."
+      parameters:
+        - in: body
+          name: "Object"
+          required: true
+          schema:
+            type: object
+      responses:
+        200:
+          description: "Successful echo of request data"

network-metrics-retrieval-microservice/app/debug.py

+from flask import request
+
+def echo():
+    return request.json
+
+ 
\ No newline at end of file

network-metrics-retrieval-microservice/app/main.py

+import connexion
+
+# load swagger config
+app = connexion.App(__name__, specification_dir='configs/')
+app.add_api('swagger.yml')
+
+@app.route('/', methods=['GET'])
+def api_root():
+    return 'Endpoint of network-metrics-retrieval-microservice!'
+
+# start app
+if __name__ == '__main__':
+    app.run(host='0.0.0.0', port=5000, debug=True)

network-metrics-retrieval-microservice/deployment/deployment.yml

+apiVersion: apps/v1
+kind: Deployment
+
+metadata:
+  name: network-metrics-retrieval
+    
+spec:
+  replicas: 2
+  selector:
+    matchLabels:
+      app: network-metrics-retrieval
+  template:
+    metadata:
+      labels:
+        app: network-metrics-retrieval
+    spec:
+      containers:
+      - name: network-metrics-retrieval
+        image: 172.16.1.20:5000/network-metrics-retrieval-microservice
+        ports:
+        - containerPort: 5000
\ No newline at end of file

network-metrics-retrieval-microservice/deployment/loadbalancer.yml

+apiVersion: v1
+kind: Service
+
+metadata:
+  name: network-metrics-retrieval-endpoint
+  
+spec:
+  type: LoadBalancer
+  externalIPs:
+    - 143.205.173.36
+  selector:
+      app: network-metrics-retrieval
+  ports:
+    - name: http
+      port: 80
+      targetPort: 5000
+      nodePort: 30002
+      protocol: TCP
\ No newline at end of file