Consistently use integer unix timestamp

src/uploader_app.py

@@ -454,10 +454,10 @@ def setupDb(self):
             battery text,
             temperature text,
             rec_end_status text,
-            indexed_at timestamp,
-            checked_at timestamp,
-            meta_uploaded_at timestamp,
-            file_uploaded_at timestamp,
+            indexed_at integer default (strftime('%s', 'now')),
+            checked_at integer,
+            meta_uploaded_at integer,
+            file_uploaded_at integer,
             root_id integer not null
         )''')
         c.execute('create index if not exists files_state_idx on files (state)')
@@ -467,8 +467,8 @@ def setupDb(self):
             uuid text unique NOT NULL,
             prefix text NOT NULL,
             label text,
-            created_at timestamp default current_timestamp,
-            updated_at timestamp default current_timestamp
+            created_at integer default (strftime('%s', 'now')),
+            updated_at integer default (strftime('%s', 'now'))
         )''')
         self.database.commit()
         c.close()

src/uploader_app_meta_th.py

@@ -71,7 +71,7 @@ def meta_worker(row):
             info['filter'] = 'NO_FILTER'
 
         timestamp = datetime.strptime(ts, "%H:%M:%S %d/%m/%Y")
-        info['timestamp'] = timestamp.replace(tzinfo=timezone(timedelta(hours=hrs, minutes=mins)))
+        info['timestamp'] = timestamp.replace(tzinfo=timezone(timedelta(hours=hrs, minutes=mins))).timestamp()
 
         amp_res = re.search(r'Amplitude threshold was ([^ ]+) with ([^ ]+)s minimum trigger duration\.', comment)
         if amp_res != None:
@@ -125,7 +125,7 @@ def meta_worker(row):
         # infer node name from path
         m = re.match(r'.*(\d{4}-\d{4}).+', path)
         if m == None:
-            raise Exception('Node label extraction failed', info['timestamp'].strftime('%Y.%m.%d %H:%M:%S'), info['serial_number'])
+            raise Exception('Node label extraction failed', info['sha256'], datetime.utcfromtimestamp(info['timestamp']).isoformat() + 'Z', info['serial_number'])
         info['node_label'] = m.groups()[0]
 
     except Exception as e:

src/uploader_app_upload_th.py

@@ -290,7 +290,7 @@ def get_tasks(self):
                 if record_raw:
                     # transform record_raw to dictionary with colname: value
                     record = {k: record_raw[i] for (i,k) in enumerate(COLS)}
-
+                    record['timestamp'] = datetime.utcfromtimestamp(record['timestamp']).isoformat() + 'Z'
                     # check if file is readable. if not, wait
                     # try:
                     #     is_readable_file(record['path'])