From a54c7fcac07855a41bc1372698e93f8f920b0b39 Mon Sep 17 00:00:00 2001
From: Stefan Hellander <stefan@scaleoutsystems.com>
Date: Mon, 22 Apr 2024 13:42:12 +0200
Subject: [PATCH] Catch resource too old error.

---
 event_listener.py | 78 ++++++++++++++++++++++++++---------------------
 1 file changed, 44 insertions(+), 34 deletions(-)

diff --git a/event_listener.py b/event_listener.py
index 6a8f4fa..b48340a 100644
--- a/event_listener.py
+++ b/event_listener.py
@@ -71,40 +71,50 @@ def sync_all_statuses():
 def init_event_listener():
     resource_version = ""
     while True:
-        for event in w.stream(
-            api.list_namespaced_pod,
-            namespace=namespace,
-            label_selector=label_selector,
-            timeout_seconds=20,
-            resource_version=resource_version,
-        ):
-            pod = event["object"]
-
-            resource_version = pod.metadata.resource_version
-            status = get_status(pod)
-
-            logging.info(f"Synchronizing status: {status}")
-
-            # status = pod.status.phase
-            release = pod.metadata.labels["release"]
-
-            event_type = event["type"]
-
-            if latest_status.get(release) == status:
-                logging.info("Status not changed, skipping...")
-
-            latest_status[release] = status
-
-            if event_type != "DELETED":
-                logging.info(f"EVENT_TYPE: {event_type}")
-                logging.info(f"STATUS: {status}")
-
-                data = {
-                    "release": release,
-                    "status": status,
-                }
-
-                post(APP_STATUS_URL, data=data)
+        try:
+            for event in w.stream(
+                api.list_namespaced_pod,
+                namespace=namespace,
+                label_selector=label_selector,
+                timeout_seconds=20,
+                resource_version=resource_version,
+            ):
+                pod = event["object"]
+
+                resource_version = pod.metadata.resource_version
+                status = get_status(pod)
+
+                logging.info(f"Synchronizing status: {status}")
+
+                # status = pod.status.phase
+                release = pod.metadata.labels["release"]
+
+                event_type = event["type"]
+
+                if latest_status.get(release) == status:
+                    logging.info("Status not changed, skipping...")
+
+                latest_status[release] = status
+
+                if event_type != "DELETED":
+                    logging.info(f"EVENT_TYPE: {event_type}")
+                    logging.info(f"STATUS: {status}")
+
+                    data = {
+                        "release": release,
+                        "status": status,
+                    }
+
+                    post(APP_STATUS_URL, data=data)
+        except client.exceptions.ApiException as e:
+            if e.status == 410:
+                # If the resource version is too old, log the issue and reset resource_version
+                logging.error("Resource version expired, restarting watch from latest version.")
+                resource_version = None
+            else:
+                logging.error(f"An error occurred: {e}")
+            continue
+        
 
 
 def get_status(pod):