move ident request to orchestration_server.py;

import sys modules for proper pickling;

components/event_store/service/event_logger.py

@@ -1,12 +1,19 @@
 import json
 import pickle
+import sys
 
+from dse_shared_libs import daf, traffic_light_state, traffic_light_color, target_velocity
 from dse_shared_libs.daf import DAF
 from dse_shared_libs.message_broker_wrapper import MBWrapper
 from dse_shared_libs.target_velocity import TargetVelocity
 from dse_shared_libs.traffic_light_state import TrafficLightState
 from redis import StrictRedis
 
+sys.modules['daf'] = daf
+sys.modules['traffic_light_state'] = traffic_light_state
+sys.modules['traffic_light_color'] = traffic_light_color
+sys.modules['target_velocity'] = target_velocity
+
 
 class EventLogger:
     def __init__(self, redis, log_to_redis, verbose):

components/i_feed/i_feed.py

@@ -1,23 +1,33 @@
+import sys
 import time
-import requests
 
-from devices.traffic_light import TrafficLight, SWITCHING_TIME
+import requests
+from dse_shared_libs import daf, traffic_light_state, traffic_light_color, target_velocity
+
+from devices.traffic_light import TrafficLight
 from devices.vehicle import Vehicle
 
+sys.modules['daf'] = daf
+sys.modules['traffic_light_state'] = traffic_light_state
+sys.modules['traffic_light_color'] = traffic_light_color
+sys.modules['target_velocity'] = target_velocity
+
 """
 USED AS ENTRYPOINT FOR DOCKERFILE
 Start all vehicles / traffic lights here
 """
 
 if __name__ == '__main__':
-
     ENTITY_IDENT_URL = 'http://entityident:5002/api/v1/resources/'
+    try:
+        response = requests.get(ENTITY_IDENT_URL + 'cars')
+        cars = response.json()
 
-    response = requests.get(ENTITY_IDENT_URL + 'cars')
-    cars = response.json()
-
-    response = requests.get(ENTITY_IDENT_URL + 'traffic_lights')
-    traffic_lights = response.json()
+        response = requests.get(ENTITY_IDENT_URL + 'traffic_lights')
+        traffic_lights = response.json()
+    except requests.exceptions.ConnectionError as e:
+        print("Is the entity_ident_server running and reachable?")
+        raise e
 
     print('Traffic lights', traffic_lights['cursor'])
     for traffic_light in traffic_lights['cursor']:

components/orchestration/orchestration_server.py

@@ -1,5 +1,6 @@
 import threading
 
+import requests
 from flask import Flask
 from orchestrator import Orchestrator
 
@@ -22,6 +23,17 @@ def api2():
 
 
 if __name__ == '__main__':
-    orc = Orchestrator()
+    ENTITY_IDENT_URL = 'http://entityident:5002/api/v1/resources/'
+    try:
+        response = requests.get(ENTITY_IDENT_URL + 'cars')
+        cars = response.json()
+
+        response = requests.get(ENTITY_IDENT_URL + 'traffic_lights')
+        traffic_lights = response.json()
+    except requests.exceptions.ConnectionError as e:
+        print("Is the entity_ident_server running and reachable?")
+        raise e
+
+    orc = Orchestrator(cars, traffic_lights)
     threading.Thread(target=orc.setup_msg_queues).start()
     threading.Thread(target=app.run, args=('0.0.0.0', 5003)).start()

components/orchestration/orchestrator.py

@@ -3,21 +3,21 @@ import sys
 from random import randrange
 from typing import List, Dict
 
-import requests
-from dse_shared_libs import daf
-from dse_shared_libs.traffic_light_color import TrafficLightColor
+from dse_shared_libs import daf, traffic_light_state, traffic_light_color, target_velocity
 from dse_shared_libs.message_broker_wrapper import MBWrapper
-
 # necessary to unpickle daf object
 from dse_shared_libs.target_velocity import TargetVelocity
 from dse_shared_libs.traffic_light_state import TrafficLightState
 
 sys.modules['daf'] = daf
+sys.modules['traffic_light_state'] = traffic_light_state
+sys.modules['traffic_light_color'] = traffic_light_color
+sys.modules['target_velocity'] = target_velocity
 
 
 class Orchestrator:
     # vehicle ids
-    vins: List[str] = []
+    vins: List[str] = set()
     # traffic lights {tlid: {color: color, switching_time: in_seconds}}
     tls: Dict[str, Dict] = {}
 
@@ -25,25 +25,13 @@ class Orchestrator:
     _daf_mbs: Dict[str, MBWrapper] = {}
     _velocity_mbs: Dict[str, MBWrapper] = {}
 
-    def __init__(self):
-
-        ENTITY_IDENT_URL = 'http://entityident:5002/api/v1/resources/'
-
-        response = requests.get(ENTITY_IDENT_URL + 'cars')
-        cars = response.json()
-
-        response = requests.get(ENTITY_IDENT_URL + 'traffic_lights')
-        traffic_lights = response.json()
-
-        for traffic_light in traffic_lights['cursor']:
-            self.tls[traffic_light['id']] = {'color': traffic_light['initialColor'], 'switching_time': traffic_light['switchingTime']}
-
-        print('tls', self.tls)
-
+    def __init__(self, cars, traffic_lights):
         for car in cars['cursor']:
             self.vins.append(car['vin'])
 
-        print('vins', self.vins)
+        for traffic_light in traffic_lights['cursor']:
+            self.tls[traffic_light['id']] = {'color': traffic_light['initialColor'],
+                                             'switching_time': traffic_light['switchingTime']}
 
     def setup_msg_queues(self):
         # spawn the vehicle related message broker channels
@@ -58,7 +46,8 @@ class Orchestrator:
 
         # spawn the traffic light related mb channels
         for tl in self.tls:
-            tl_channel = MBWrapper(exchange_name='traffic_light_state_{}'.format(tl), callback=self.handle_tl_state_receive)
+            tl_channel = MBWrapper(exchange_name='traffic_light_state_{}'.format(tl),
+                                   callback=self.handle_tl_state_receive)
             tl_channel.setup_receiver()
 
     def handle_daf_receive(self, pickle_binary):