Certificate rotation enhancements (#570)

lemur/deployment/service.py

@@ -0,0 +1,19 @@
+from flask import current_app
+from lemur.extensions import metrics
+
+
+def rotate_certificate(endpoint, new_cert):
+    """
+    Rotates a certificate on a given endpoint.
+
+    :param endpoint:
+    :param new_cert:
+    :return:
+    """
+    try:
+        endpoint.source.plugin.update_endpoint(endpoint, new_cert)
+        endpoint.certificate = new_cert
+        metrics.send('rotation_success', 'counter', 1, metric_tags={'endpoint': endpoint.name})
+    except Exception as e:
+        metrics.send('rotation_failure', 'counter', 1, metric_tags={'endpoint': endpoint.name})
+        current_app.logger.exception(e)