fix: ignore exceptions from blobstore ops (ietf-tools#8565)

* fix: ignore exceptions from to blobstore ops

* fix: log repr(err) instead of just err

Author: jennifer-richards

ietf/doc/storage_utils.py

@@ -8,6 +8,8 @@
 from django.core.files.base import ContentFile, File
 from django.core.files.storage import storages
 
+from ietf.utils.log import log
+
 
 # TODO-BLOBSTORE (Future, maybe after leaving 3.9) : add a return type
 def _get_storage(kind: str):
@@ -22,16 +24,22 @@ def _get_storage(kind: str):
 
 def exists_in_storage(kind: str, name: str) -> bool:
     if settings.ENABLE_BLOBSTORAGE:
-        store = _get_storage(kind)
-        return store.exists_in_storage(kind, name)
+        try:
+            store = _get_storage(kind)
+            return store.exists_in_storage(kind, name)
+        except Exception as err:
+            log(f"Blobstore Error: Failed to test existence of {kind}:{name}: {repr(err)}")
     else:
         return False
 
 
 def remove_from_storage(kind: str, name: str, warn_if_missing: bool = True) -> None:
     if settings.ENABLE_BLOBSTORAGE:
-        store = _get_storage(kind)
-        store.remove_from_storage(kind, name, warn_if_missing)
+        try:
+            store = _get_storage(kind)
+            store.remove_from_storage(kind, name, warn_if_missing)
+        except Exception as err:
+            log(f"Blobstore Error: Failed to remove {kind}:{name}: {repr(err)}")
     return None
 
 
@@ -46,8 +54,11 @@ def store_file(
 ) -> None:
     # debug.show('f"asked to store {name} into {kind}"')
     if settings.ENABLE_BLOBSTORAGE:
-        store = _get_storage(kind)
-        store.store_file(kind, name, file, allow_overwrite, doc_name, doc_rev)
+        try:
+            store = _get_storage(kind)
+            store.store_file(kind, name, file, allow_overwrite, doc_name, doc_rev)
+        except Exception as err:
+            log(f"Blobstore Error: Failed to store file {kind}:{name}: {repr(err)}")
     return None
 
 
@@ -60,7 +71,11 @@ def store_bytes(
     doc_rev: Optional[str] = None,
 ) -> None:
     if settings.ENABLE_BLOBSTORAGE:
-        store_file(kind, name, ContentFile(content), allow_overwrite)
+        try:
+            store_file(kind, name, ContentFile(content), allow_overwrite)
+        except Exception as err:
+            # n.b., not likely to get an exception here because store_file or store_bytes will catch it
+            log(f"Blobstore Error: Failed to store bytes to {kind}:{name}: {repr(err)}")
     return None
 
 
@@ -73,31 +88,41 @@ def store_str(
     doc_rev: Optional[str] = None,
 ) -> None:
     if settings.ENABLE_BLOBSTORAGE:
-        content_bytes = content.encode("utf-8")
-        store_bytes(kind, name, content_bytes, allow_overwrite)
+        try:
+            content_bytes = content.encode("utf-8")
+            store_bytes(kind, name, content_bytes, allow_overwrite)
+        except Exception as err:
+            # n.b., not likely to get an exception here because store_file or store_bytes will catch it
+            log(f"Blobstore Error: Failed to store string to {kind}:{name}: {repr(err)}")
     return None
 
 
 def retrieve_bytes(kind: str, name: str) -> bytes:
     from ietf.doc.storage_backends import maybe_log_timing
     content = b""
     if settings.ENABLE_BLOBSTORAGE:
-        store = _get_storage(kind)
-        with store.open(name) as f:
-            with maybe_log_timing(
-                hasattr(store, "ietf_log_blob_timing") and store.ietf_log_blob_timing,
-                "read",
-                bucket_name=store.bucket_name if hasattr(store, "bucket_name") else "",
-                name=name,
-            ):
-                content = f.read()
+        try:
+            store = _get_storage(kind)
+            with store.open(name) as f:
+                with maybe_log_timing(
+                    hasattr(store, "ietf_log_blob_timing") and store.ietf_log_blob_timing,
+                    "read",
+                    bucket_name=store.bucket_name if hasattr(store, "bucket_name") else "",
+                    name=name,
+                ):
+                    content = f.read()
+        except Exception as err:
+            log(f"Blobstore Error: Failed to read bytes from {kind}:{name}: {repr(err)}")
     return content
 
 
 def retrieve_str(kind: str, name: str) -> str:
     content = ""
     if settings.ENABLE_BLOBSTORAGE:
-        content_bytes = retrieve_bytes(kind, name)
-        # TODO-BLOBSTORE: try to decode all the different ways doc.text() does
-        content = content_bytes.decode("utf-8")
+        try:
+            content_bytes = retrieve_bytes(kind, name)
+            # TODO-BLOBSTORE: try to decode all the different ways doc.text() does
+            content = content_bytes.decode("utf-8")
+        except Exception as err:
+            log(f"Blobstore Error: Failed to read string from {kind}:{name}: {repr(err)}")
     return content

ietf/utils/storage.py

@@ -41,13 +41,13 @@ def save(self, name, content, max_length=None):
         saved_name = super().save(name, content, max_length)
 
         if settings.ENABLE_BLOBSTORAGE:
-            # Retrieve the content and write to the blob store
-            blob_name = Path(saved_name).name  # strips path
             try:
+                # Retrieve the content and write to the blob store
+                blob_name = Path(saved_name).name  # strips path
                 with self.open(saved_name, "rb") as f:
                     store_file(self.kind, blob_name, f, allow_overwrite=True)
             except Exception as err:
-                log(f"Failed to shadow {saved_name} at {self.kind}:{blob_name}: {err}")
+                log(f"Blobstore Error: Failed to shadow {saved_name} at {self.kind}:{blob_name}: {repr(err)}")
         return saved_name  # includes the path!
 
     def deconstruct(self):