DB part 2

docker-compose.yml

@@ -21,6 +21,8 @@ services:
       MQTT_PASSWORD: ${MQTT_PASSWORD:?err}
       MQTT_BROKER: ${MQTT_BROKER:?err}
       MQTT_CLIENT: ${MQTT_CLIENT:?err}
+      # Various
+      MACHINES: ${MACHINES:?err}
     restart: unless-stopped
     
   db:

fab_access/config.py

@@ -23,3 +23,5 @@ class Config:
     db_password  = _read_from_env('DB_PASSWORD')
     db_database  = _read_from_env('DB_DATABASE')
     db_port      = int(_read_from_env('DB_PORT','5432'))
+
+    machines      = _read_from_env('MACHINES')

fab_access/keycloak_handler.py

@@ -35,7 +35,7 @@ class KeycloakHandler:
 
     @staticmethod
     def user_is_privileged(username):
-        groups = KeycloakHandler.admin.get_user_groups(user_id=username)
+        groups = KeycloakHandler.admin.get_user_groups(user_id=KeycloakHandler.admin.get_user_id(username))
         groups = [group['name'] for group in groups]
 
         if 'Mentoren' in groups:

fab_access/main.py

@@ -42,6 +42,7 @@ def handle_request(msg, client):
     fabcard_id = json.loads(msg.payload.decode())['UID']
     reader_id = msg.topic.split('/')[-1]
     
+    KeycloakHandler.login()
     user = KeycloakHandler.get_user_by_card_id(fabcard_id)
     if not user:
         MqttHandler.print_to_display(reader_id, 16, fabcard_id)
@@ -53,12 +54,13 @@ def handle_request(msg, client):
     # - get machine_status from database, is 0 for off, 1 for on
     # - get plug_id from database
 
-    print(SQLHandler.get_machine_data(reader_id))
+    db_data = SQLHandler.get_machine_data(reader_id)
+    #print(data)
 
-    machine_id = 'space.foo.lazerspacer'
-    last_user = 'foo.bar'
-    machine_status = 0 # or 1
-    plug_id = 'lazerspacer'
+    machine_id = db_data["machine_id"]
+    last_user = data["last_user"]
+    machine_status = data["machine_status"]
+    plug_id = data["plug_id"]
 
     try:
         user_permissions = json.loads(user['attributes']['FabPermissions'][0])
@@ -75,11 +77,12 @@ def handle_request(msg, client):
     username = user['username']
     display_name = gen_display_name(user)
 
-    if machine_status == 0:
+    if not machine_status:
         print(f'Turn Plug {plug_id} on')
         MqttHandler.switch_plug(plug_id, 1)
         MqttHandler.print_to_display(reader_id, 20, f'Login\n{display_name}')
     else:
+        print("user1"+last_user+"user2"+username)
         if not (username == last_user or KeycloakHandler.user_is_privileged(username)):
             MqttHandler.print_to_display(reader_id, 9, last_user)
             return
@@ -90,6 +93,7 @@ def handle_request(msg, client):
     # TODO Update Database:
     #  - last user
     #  - machine_status
+    SQLHandler.update_machine(reader_id, last_user, machine_status)
     MqttHandler.publish(f'/FabLogging/{plug_id}/USER', username)
 
 
@@ -101,7 +105,6 @@ def main():
     MqttHandler.connect_mqtt()
     MqttHandler.subscribe("/rfid_reader/#")
     SQLHandler.init_db()
-
     MqttHandler.loop()
 
 if __name__ == '__main__':

fab_access/sql_handler.py

@@ -1,5 +1,6 @@
 import psycopg2
 from psycopg2 import sql, extensions
+import json
 
 from config import Config
 
@@ -25,16 +26,24 @@ class SQLHandler:
     # - get last_user from database
     # - get machine_status from database, is 0 for off, 1 for on
     # - get plug_id from database
-        SQLHandler.cursor.execute("SELECT machine_id,last_user,machine_status,plug_id FROM readerplug WHERE reader_id = %s;", (reader_id,))
+        SQLHandler.cursor.execute("SELECT * FROM readerplug WHERE readerplug.reader_id = %s;", (reader_id,))
         data = [row for row in SQLHandler.cursor.fetchall()]
-        print(data)
-        return {
-            'machine_id': data[0],
-            'last_user': data[1],
-            'machine_status': data[2],
-            'plug_id': data[3]
-        }
+        if(len(data) > 0):
+            return {
+                'machine_id': data[0][2],
+                'last_user': data[0][4],
+                'machine_status': data[0][3],
+                'plug_id': data[0][0]
+            }
+        else:
+            print("No maching Card Reader found in db")
+            return "Error"
 
+    @staticmethod
+    def update_machine(reader_id,last_user,machine_status):
+        SQLHandler.cursor.execute("UPDATE readerplug SET machine_status = %s WHERE readerplug.reader_id = %s", (False if machine_status else True,reader_id))
+        SQLHandler.cursor.execute("UPDATE readerplug SET last_user      = %s WHERE readerplug.reader_id = %s", (last_user,reader_id))
+        SQLHandler.conn.commit()
 
     @staticmethod
     def init_db():
@@ -63,3 +72,12 @@ class SQLHandler:
         else:
             print("Found Table -> Using existing one")
         SQLHandler.conn.commit()
+
+        SQLHandler.cursor.execute("SELECT * FROM readerplug;")
+        if(len(SQLHandler.cursor.fetchall()) < 1):
+            print("Found no machines in table, adding machines from config")
+            machines = json.loads(Config.machines)
+            for machine in machines:
+                SQLHandler.cursor.execute("INSERT INTO readerplug (reader_id, plug_id, machine_id, machine_status, last_user) VALUES (%s, %s, %s, False, 'no_user');", (machine[0],machine[1],machine[2]))
+            print("-------------")
+        SQLHandler.conn.commit()