Add disable notifications config option (#189)

This adds a configuration option to disable notifications.

Fix #181

Signed-off-by: David Brown <dmlb2000@gmail.com>

docs/configuration.md

@@ -51,6 +51,9 @@ debug_logging = False
 [notifications]
 ; This section describes where the notifications server is.
 
+; Disable eventing for the metadata service.
+disabled = False
+
 ; URL to the recieve endpoint on the notifications server.
 url = http://127.0.0.1:8070/receive
 

pacifica/metadata/config.py

@@ -28,6 +28,8 @@ def get_config():
     configparser.set('database', 'peewee_url', getenv(
         'PEEWEE_URL', 'postgresql://pacifica:metadata@localhost:5432/pacifica_metadata'))
     configparser.add_section('notifications')
+    configparser.set('notifications', 'disabled', getenv(
+        'NOTIFICATIONS_DISABLED', 'False'))
     configparser.set('notifications', 'url', getenv(
         'NOTIFICATIONS_URL', 'http://127.0.0.1:8070/receive'))
     configparser.add_section('elasticsearch')

pacifica/metadata/rest/ingest.py

@@ -243,5 +243,6 @@ def emit_event(json):
         Files()._insert(extract_files(request.json))
         FileKeyValue()._insert(generate_fkvs(request.json))
         # pylint: enable=protected-access
-        emit_event(request.json)
+        if not get_config().getboolean('notifications', 'disabled'):
+            emit_event(request.json)
         return {'status': 'success'}