Make Cloudfront caller references unique

art/cloudfront.py

@@ -1,6 +1,7 @@
 from __future__ import annotations
 
 import logging
+import time
 from typing import Any
 
 log = logging.getLogger(__name__)
@@ -15,16 +16,22 @@ def get_cloudfront_client() -> Any:
 
 def execute_cloudfront_invalidations(invalidations: dict[str, set[str]]) -> None:
     cf_client = get_cloudfront_client()
+    ts = int(time.time())
     for dist_id, paths in invalidations.items():
         log.info("Creating CloudFront invalidation for %s: %d paths", dist_id, len(paths))
+        caller_reference = f"art-{dist_id}-{ts}"
         inv = cf_client.create_invalidation(
             DistributionId=dist_id,
             InvalidationBatch={
                 "Paths": {
                     "Quantity": len(paths),
                     "Items": sorted(paths),
                 },
-                "CallerReference": "art",
+                "CallerReference": caller_reference,
             },
         )
-        log.info("Created CloudFront invalidation: %s", inv["Invalidation"]["Id"])
+        log.info(
+            "Created CloudFront invalidation with caller reference %s: %s",
+            caller_reference,
+            inv["Invalidation"]["Id"],
+        )