optionally turn off igwn-alerts to *_{search} topics

config/settings/base.py

@@ -150,6 +150,13 @@ SEND_MATTERMOST_ALERTS = False
 # IGWN_ALERT_GROUP environment variable. 
 DEFAULT_IGWN_ALERT_GROUP = 'lvalert-dev'
 
+# enable/disable sending alerts to topics that have the search tag
+# for g/e-events. default to false, so only send to {group}_{pipeline}
+SEND_TO_SEARCH_TOPICS = parse_envvar_bool(
+    get_from_env('IGWN_ALERT_SEARCH_TOPICS',
+                 fail_if_not_found=False, default_value="false")
+)
+
 # overseer timeout:
 OVERSEER_TIMEOUT = float(get_from_env('IGWN_ALERT_OVERSEER_TIMEOUT',
     fail_if_not_found=False, default_value=0.1))

gracedb/alerts/xmpp.py

@@ -48,7 +48,7 @@ def get_xmpp_node_names(event_or_superevent):
         gp_node = "{group}_{pipeline}".format(group=event.group.name,
             pipeline=event.pipeline.name).lower()
         node_names.append(gp_node)
-        if event.search:
+        if event.search and settings.SEND_TO_SEARCH_TOPICS:
             gps_node = gp_node + "_{search}".format(
                 search=event.search.name.lower())
             node_names.append(gps_node)