Integrating with External GraceDB Alert Dispatcher (EGAD) for improved alert performance

Alerts are now being handled externally with EGAD. In addition, alerts sent over Mattermost are now implemented and enabled by default.

Tasks:

• test container on gracedb-test
• fix test_phone.py and test_email.py unit tests
  • these were disabled due to switch to EGAD changing their behavior, fixing is maybe 30 minutes' work

config/settings/container/base.py

@@ -31,6 +31,35 @@ if SERVER_FQDN is None:
     raise ImproperlyConfigured('Could not get FQDN from envvars.')
 LIGO_FQDN = SERVER_FQDN
 
+
+## EGAD (External GraceDB Alert Dispatcher) configuration
+ENABLE_EGAD_EMAIL = parse_envvar_bool(
+    get_from_env('ENABLE_EGAD_EMAIL',
+                 fail_if_not_found=False, default_value="false")
+)
+ENABLE_EGAD_KAFKA = parse_envvar_bool(
+    get_from_env('ENABLE_EGAD_KAFKA',
+                 fail_if_not_found=False, default_value="false")
+)
+ENABLE_EGAD_MATTERMOST = parse_envvar_bool(
+    get_from_env('ENABLE_EGAD_MATTERMOST',
+                 fail_if_not_found=False, default_value="false")
+)
+ENABLE_EGAD_PHONE = parse_envvar_bool(
+    get_from_env('ENABLE_EGAD_PHONE',
+                 fail_if_not_found=False, default_value="false")
+)
+
+ENABLE_EGAD = (
+    ENABLE_EGAD_EMAIL or ENABLE_EGAD_KAFKA
+    or ENABLE_EGAD_MATTERMOST or ENABLE_EGAD_PHONE
+)
+
+EGAD_URL = get_from_env('EGAD_URL',
+                        fail_if_not_found=ENABLE_EGAD, default_value=None)
+EGAD_API_KEY = get_from_env('EGAD_API_KEY',
+                   fail_if_not_found=ENABLE_EGAD, default_value=None)
+
 # Turn LVAlert on/off from the environment. Adding this
 # to turn lvalerts on/off from docker compose/update instead
 # of having to rebuild containers. If the environment variable
@@ -293,6 +322,12 @@ SEND_EMAIL_ALERTS = parse_envvar_bool(get_from_env(
     fail_if_not_found=False
     ))
 
+SEND_MATTERMOST_ALERTS = parse_envvar_bool(get_from_env(
+    'SEND_MATTERMOST_ALERTS',
+    default_value='False',
+    fail_if_not_found=False
+    ))
+
 INSTANCE_STUB = """
 <li>Phone alerts (calls/SMS) are {0}</li>
 <li>Email alerts are {1}</li>