Retain container statistics between poll iterations

bobf · Apr 15, 2021 · 63f30f7 · 63f30f7
1 parent d78e366
commit 63f30f7
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/agent/app.py b/agent/app.py
@@ -28,6 +28,7 @@
 
 class StatRunner:
     cache = collections.deque([], 10)
+    container_cache = {}
 
     def __init__(self, **kwargs):
         self.opts = kwargs
@@ -170,6 +171,9 @@ def container_definition(self, container, with_stats=False):
         definition = { 'id': container.id, 'name': container.name }
         if with_stats:
             definition.update(self.docker().containers.get(container.id).stats(stream=False))
+            self.container_cache[container.id] = definition
+        elif container.id in self.container_cache:
+            definition.update(self.container_cache[container.id])
         definition['polled'] = with_stats
         # Remove `/` prefix from container name; may be a slight bug in Python Docker library.
         definition['name'] = definition['name'].strip('/')