added code to run main loop of service

code/main.py

@@ -0,0 +1,51 @@
+import time
+import logging
+import time
+import os
+from initialise_app import initialise_app
+from bandwidth import measure as measure_bandwidth
+from database import connect
+
+def event():
+    logging.info('started event')
+    # get env vars
+    replicates = int(os.getenv('REPLICATES'))
+    # setup database connection
+    db = connect()
+    # run event
+    for rep_num in range(replicates):
+        logging.info(f'running replicate {rep_num}')
+        # do measurement
+        try:
+            res = measure_bandwidth()
+        except Exception as e:
+            logging.error(f'failed to measure bandwidth: {e}')
+            continue
+        # upload result to database
+        payload_dict = {
+            'user_id': os.getenv('USER_ID'),
+            'data': res
+        }
+        try:
+            db_id = db.insert_one(payload_dict).inserted_id
+        except Exception as e:
+            logging.error(f'failed sending results to database: {e}')
+            continue
+        logging.debug(f'data sent to database received db_id: {db_id}')
+        time.sleep(1)
+    logging.info('finished event')
+
+if __name__ == '__main__':
+    initialise_app()
+    trigger_time = time.time()
+    while True:
+        if time.time() >= trigger_time:
+            # set new trigger time
+            trigger_time += int(os.getenv('TRIGGER_INTERVAL_SECONDS'))
+            # run event
+            try:
+                event()
+            except Exception as e:
+                logging.error(e)
+        time.sleep(1)
+