rgw: handle the scenario where the socket doesn't respond

The perf dump to the socket could fail, so this change handles this
scenario by just reporting the issue avoiding connectionerror
problems

diff --git a/collectors/rgw.py b/collectors/rgw.py
index 8a0095afe8b93c3594b1600306387e8f8afa220d..45f97495ccea37c1bc428b349b45ae5b6e85562b 100644 (file)
--- a/collectors/rgw.py
+++ b/collectors/rgw.py
@@ -41,9 +41,12 @@ class RGW(BaseCollector):
 
         response = self._admin_socket()
 
-        key_name = 'client.rgw.{}'.format(self.host_name)
-
-        return response.get(key_name)
+        if response:
+            key_name = 'client.rgw.{}'.format(self.host_name)
+            return response.get(key_name)
+        else:
+            # admin_socket call failed
+            return {}
 
     def _filter(self, stats):
         # pick out the simple metrics
@@ -62,8 +65,10 @@ class RGW(BaseCollector):
         start = time.time()
 
         raw_stats = self._get_rgw_data()
-
-        stats = self._filter(raw_stats)
+        if raw_stats:
+            stats = self._filter(raw_stats)
+        else:
+            stats = {}
 
         stats['ceph_version'] = self.version