Bug fix in meb session

Added new reverse method to remove dependency from openstreet maps

bootstrap.py

@@ -18,7 +18,7 @@ import hub_api.helpers.session_helper as sh
 from hub_api.control.session import SessionStart, SessionEnd, KeepSessionAlive
 from hub_api.control.uptime import Uptime
 from hub_api.buildings.meb import Meb
-
+from hub_api.geolocation.reverse import Reverse
 
 sh.begin_time = datetime.datetime.now()
 app = flask.Flask('cerc_api')
@@ -35,6 +35,9 @@ api.add_resource(KeepSessionAlive, '/v1.4/session/keep_alive')
 # Buildings
 api.add_resource(Meb, '/v1.4/buildings/meb')
 
+# GeoLocation
+api.add_resource(Reverse, '/v1.4/geolocation/reverse/<latitude>/<longitude>', endpoint='reverse')
+
 with open("hub_api/docs/openapi-specs.yml", "r") as stream:
   swagger_config = {
     "headers": [],

hub_api/buildings/meb.py

@@ -1,9 +1,11 @@
 import json
+
 from flask import Response, request
 from flask_restful import Resource
 
-from hub_api.helpers.session_helper import active_session, session
 from hub_api.config import Config
+from hub_api.helpers.session_helper import session, refresh_session
+
 
 class Meb(Resource, Config):
   def __init__(self):
@@ -16,14 +18,17 @@ class Meb(Resource, Config):
     session_id = request.headers.get('session_id', None)
     token = request.headers.get('token', None)
     application_uuid = request.headers.get('application_uuid', None)
-    if active_session(session_id, token, application_uuid):
+    _session = refresh_session(session_id, token, application_uuid)
+    if _session is None:
+      return Response(json.dumps({'error': 'unauthorized'}), status=403)
     application_id = session(session_id)['application_id']
     user_id = session(session_id)['user_id']
+    token = {'token': _session['token']}
     payload = request.get_json()
     results = self.export_db_factory.results(user_id, application_id, payload)
     if results == {}:
       # no data found for the given parameters
-        return Response(json.dumps({'result': 'succeed', 'results': results}), status=200)
+      return Response(json.dumps({'result': 'succeed', 'results': results}), status=200, headers=token)
     # deserialize the response to return pure json
     city_name = next(iter(results))
     for building_results in results[city_name]:
@@ -32,5 +37,4 @@ class Meb(Resource, Config):
         key = next(iter(value))
         values.append({key: json.loads(value[key])})
       building_results['insel meb'] = values
-      return Response(json.dumps({'result': 'succeed', 'results': results}), status=200)
-    return Response(json.dumps({'error': 'unauthorized'}), status=403)
+    return Response(json.dumps({'result': 'succeed', 'results': results}), status=200, headers=token)

hub_api/control/session.py

@@ -75,11 +75,11 @@ class KeepSessionAlive(Resource):
     session_id = request.headers.get('session_id', None)
     token = request.headers.get('token', None)
     application_uuid = request.headers.get('application_uuid', None)
-    session = refresh_session(session_id, token, application_uuid)
+    _session = refresh_session(session_id, token, application_uuid)
 
-    if session is None:
+    if _session is None:
       return Response(json.dumps({'error': 'unauthorized'}), status=403)
 
     response = Response(json.dumps({'result': 'succeed'}), status=200)
-    response.headers['token'] = session['token']
+    response.headers['token'] = _session['token']
     return response

hub_api/docs/openapi-specs.yml

@@ -38,6 +38,7 @@ paths:
           name: password
           schema:
             type: string
+          format: password
           required: true
           description: the password for the user accessing this API
         - in: header
@@ -180,6 +181,43 @@ paths:
             application/json:
               schema:
                 $ref: '#/components/schemas/unauthorized'
+  /v1.4/geolocation/reverse/{latitude}/{longitude}:
+    get:
+      parameters:
+        - in: path
+          name: latitude
+          schema:
+            type: string
+          required: true
+        - in: path
+          name: longitude
+          schema:
+            type: string
+          required: true
+      tags:
+        - Reverse geolocation information
+      summary: Retrieve the geolocation information from the given latitude and longitude
+      operationId: reverse
+      description: Retrieve the geolocation information from the given latitude and longitude and renew the token
+      responses:
+        '200':
+          description: Succeed
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/reverse'
+          headers:
+            token:
+              type: string
+              format: uuid
+              description: Token expected in next operation header
+              example: '77e1c83b-7bb0-437b-bc50-a7a58e5660ac'
+        '403':
+          description: Unauthorized
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/unauthorized'
 components:
   securitySchemes:
     session_id:
@@ -202,6 +240,18 @@ components:
           type: string
           format: hh:mm:ss.ms
           example: '00:09:53.600281'
+    reverse:
+      type: object
+      properties:
+        country:
+          type: string
+          example: 'CA'
+        city:
+          type: string
+          example: 'Montreal'
+        climate_zone:
+          type: string
+          example: '6'
     unauthorized:
       type: object
       properties:

hub_api/geolocation/reverse.py

@@ -0,0 +1,35 @@
+import json
+import math
+from pathlib import Path
+
+from flask import Response
+from flask.views import MethodView
+
+from hub_api.config import Config
+
+
+class Reverse(MethodView, Config):
+  def __init__(self):
+    super().__init__()
+    self._reverse_path = Path(Path(__file__).parent.parent / 'data/cities15000.txt').resolve()
+
+  def get(self, latitude: float, longitude: float):
+    latitude = float(latitude)
+    longitude = float(longitude)
+    distance = math.inf
+    country = 'unknown'
+    city = 'unknown'
+    with open(self._reverse_path, 'r') as f:
+      for line_number, line in enumerate(f):
+        fields = line.split('\t')
+        file_city_name = fields[1]
+        file_latitude = float(fields[4])
+        file_longitude = float(fields[5])
+        file_country_code = fields[8]
+        new_distance = math.sqrt(pow((latitude-file_latitude),2) + pow((longitude-file_longitude),2))
+        if distance > new_distance:
+          distance = new_distance
+          country = file_country_code
+          city = file_city_name
+    return Response(json.dumps({'country': country, 'city':city}), status=200)
+

hub_api/helpers/session_helper.py

@@ -22,7 +22,7 @@ def expired_sessions_collector(session_timeout_duration):
   """
   while True:
     if bool(sessions):
-      for session in list(sessions):
+      for _session in list(sessions):
         _expire = datetime.datetime.strptime(sessions[session]['expire'], '%Y-%m-%d %H:%M:%S.%f')
         if _expire < datetime.datetime.now():
           print("session with session_id: ", session, "expired.")
@@ -35,10 +35,10 @@ def _validate_session(session_id, token, application_uuid):
   Checks if session is valid
   """
   try:
-    session = sessions[session_id]
+    _session = session(session_id)
     if debug_mode:
-      token = session['token']
-    return bool(session) and (session['token'] == token) and session['application_uuid'] == application_uuid
+      token = _session['token']
+    return bool(_session) and (_session['token'] == token) and _session['application_uuid'] == application_uuid
   except KeyError:
     return False
 
@@ -61,8 +61,7 @@ def refresh_session(session_id, token, application_uuid):
   if _validate_session(session_id, token, application_uuid):
     sessions[session_id]['expire'] = str(datetime.datetime.now() + datetime.timedelta(minutes=5))
     sessions[session_id]['token'] = str(uuid.uuid4())
-    return sessions[session_id]
-
+    return session(session_id)
   return None