Adding additional failure conditions to sentry tracking. (#853)

* Adding additional failure conditions to sentry tracking.

* Removing sentry extension as a circular import.

lemur/endpoints/cli.py

@@ -14,7 +14,7 @@ from sqlalchemy import cast
 from sqlalchemy_utils import ArrowType
 
 from lemur import database
-from lemur.extensions import metrics
+from lemur.extensions import metrics, sentry
 from lemur.endpoints.models import Endpoint
 
 
@@ -27,13 +27,17 @@ def expire(ttl):
     Removed all endpoints that have not been recently updated.
     """
     print("[+] Staring expiration of old endpoints.")
-    now = arrow.utcnow()
-    expiration = now - timedelta(hours=ttl)
-    endpoints = database.session_query(Endpoint).filter(cast(Endpoint.last_updated, ArrowType) <= expiration)
 
-    for endpoint in endpoints:
-        print("[!] Expiring endpoint: {name} Last Updated: {last_updated}".format(name=endpoint.name, last_updated=endpoint.last_updated))
-        database.delete(endpoint)
-        metrics.send('endpoint_expired', 'counter', 1)
+    try:
+        now = arrow.utcnow()
+        expiration = now - timedelta(hours=ttl)
+        endpoints = database.session_query(Endpoint).filter(cast(Endpoint.last_updated, ArrowType) <= expiration)
 
-    print("[+] Finished expiration.")
+        for endpoint in endpoints:
+            print("[!] Expiring endpoint: {name} Last Updated: {last_updated}".format(name=endpoint.name, last_updated=endpoint.last_updated))
+            database.delete(endpoint)
+            metrics.send('endpoint_expired', 'counter', 1)
+
+        print("[+] Finished expiration.")
+    except Exception as e:
+        sentry.captureException()