demo: simplify the REST API interface

The topology will be provisioned out-of-band, so let's simplify the REST
API so that it reflects that design. Also, let's make it obvious that
the API is subject to change and should not be relied upon at this time.
It's meant to be an experimental interface with data I/O format which
*will* change as we adapt a proper YANG model for both directions.

examples/path_requests_run.py

@@ -505,22 +505,10 @@ class GnpyAPI(Resource):
     """ Compute requests using network, data and equipment with rest api
     """
     def post(self):
-        """ returns response
-        """
-        print(request.is_json)
-        content = request.get_json()
-        content1 = content['gnpy-api']
-        topo_json = content1['topology-file']
-        if not topo_json:
-            topo_json = load_json(NETWORK_FILENAME)
-        svc_json = content1['service-file']
-        # Load equipment
-        equipment = load_equipment('eqpt_config.json')
-        #Create load_requests
-        data = svc_json
-        #network = load_network(ARGS.network_filename, equipment)
+        data = request.get_json()
+        equipment = load_equipment('examples/2019-demo-equipment.json')
+        topo_json = load_json('examples/2019-demo-topology.json')
         network = network_from_json(topo_json, equipment)
-        # Compute requests using network, data and equipment
         try:
             propagatedpths, reversed_propagatedpths, rqs = compute_requests(network, data, equipment)
             # Generate the output
@@ -534,7 +522,7 @@ class GnpyAPI(Resource):
             msg = f'Service error: {this_e}'
             return {"result": msg}, 400
 
-API.add_resource(GnpyAPI, '/gnpy/api/v1.0/files', endpoint='files')
+API.add_resource(GnpyAPI, '/gnpy-experimental')
 
 def main(args):
     """ main function that calls all functions