Add crossway api for cars

components/x_way/x_way_server.py

@@ -1,17 +1,32 @@
+import requests
+from bson import json_util
 from flask import Flask
 from flask_cors import CORS
 
 app = Flask(__name__)
 CORS(app)
 
+ENTITY_IDENT_URL = 'http://entityident:5002/api/v1/resources/'
+
+
 @app.route('/')
 def hello_world():
     return 'Hello World'
 
 
-@app.route('/api1')
-def api1():
-    return 'api1'
+@app.route('/api/v1/resources/cars', methods=['GET'])
+def get_cars():
+
+    try:
+        response = requests.get(ENTITY_IDENT_URL + 'cars')
+        cars = response.json()['cursor']
+
+    except requests.exceptions.ConnectionError as e:
+        print("Is the entity_ident_server running and reachable?")
+        raise e
+
+    return json_util.dumps({'cursor': cars})
+
 
 
 @app.route('/api2')