Lee-W commented on code in PR #73374:
URL: https://github.com/apache/airflow/pull/73374#discussion_r4090766350


##########
providers/common/sql/src/airflow/providers/common/sql/datafusion/engine.py:
##########
@@ -196,6 +205,82 @@ def _fetch_extra_configs(keys: list[str]) -> dict[str, 
Any]:
                     key_path = os.environ.get("GOOGLE_APPLICATION_CREDENTIALS")
                 credentials = self._remove_none_values({"key_path": key_path, 
"keyfile_dict": keyfile_dict})
 
+            case "wasb":
+                extra_dejson = conn.extra_dejson
+                for unsupported_field in (
+                    "connection_string",
+                    "managed_identity_client_id",
+                    "workload_identity_tenant_id",
+                ):
+                    if _get_wasb_extra_field(extra_dejson, unsupported_field):
+                        raise ValueError(
+                            f"Connection field {unsupported_field!r} is not 
supported for DataFusion "
+                            "Azure Blob Storage access; only 
tenant_id+login+password (service "
+                            "principal), sas_token, 
shared_access_key/account_key/password, or ambient "
+                            "credentials (AZURE_* environment variables, 
managed identity, workload "
+                            "identity, or az login) are used."
+                        )
+                credentials = {"account": 
self._resolve_wasb_account(conn.host, conn.login)}
+                tenant_id = _get_wasb_extra_field(extra_dejson, "tenant_id")
+                sas_token = _get_wasb_extra_field(extra_dejson, "sas_token")
+                explicit_credential = False
+                if tenant_id:
+                    if not conn.login or not conn.password:
+                        # Falling through here would silently switch identity 
(ambient auth, or
+                        # the client secret sent as a shared key) instead of 
failing clearly.
+                        missing = "login (client_id)" if not conn.login else 
"password (client_secret)"
+                        raise ValueError(
+                            f"Connection extra 'tenant_id' is set for 
DataFusion Azure Blob Storage "
+                            f"service-principal auth, but {missing} is not."
+                        )
+                    credentials.update(
+                        {"client_id": conn.login, "client_secret": 
conn.password, "tenant_id": tenant_id}
+                    )
+                    explicit_credential = True
+                elif sas_token:

Review Comment:
   ```suggestion
                   elif (sas_token := _get_wasb_extra_field(extra_dejson, 
"sas_token")):
   ```



##########
providers/common/sql/src/airflow/providers/common/sql/datafusion/engine.py:
##########
@@ -153,6 +154,14 @@ def _fetch_extra_configs(keys: list[str]) -> dict[str, 
Any]:
                     conf[key] = conn.extra_dejson[key]
             return conf
 
+        def _get_wasb_extra_field(extra_dejson: dict[str, Any], field_name: 
str) -> Any:
+            # Older Airflow connection UIs wrote custom extra fields as
+            # extra__wasb__<field_name> instead of the bare key; WasbHook 
still reads that
+            # legacy spelling as a fallback, so this must too.
+            if field_name in extra_dejson:
+                return extra_dejson[field_name]
+            return extra_dejson.get(f"extra__wasb__{field_name}")

Review Comment:
   ```suggestion
               return extra_dejson.get(
                field_name,
                    extra_dejson.get(f"extra__wasb__{field_name}")
               )
   ```



##########
providers/common/sql/src/airflow/providers/common/sql/datafusion/engine.py:
##########
@@ -196,6 +205,82 @@ def _fetch_extra_configs(keys: list[str]) -> dict[str, 
Any]:
                     key_path = os.environ.get("GOOGLE_APPLICATION_CREDENTIALS")
                 credentials = self._remove_none_values({"key_path": key_path, 
"keyfile_dict": keyfile_dict})
 
+            case "wasb":
+                extra_dejson = conn.extra_dejson
+                for unsupported_field in (
+                    "connection_string",
+                    "managed_identity_client_id",
+                    "workload_identity_tenant_id",
+                ):
+                    if _get_wasb_extra_field(extra_dejson, unsupported_field):
+                        raise ValueError(
+                            f"Connection field {unsupported_field!r} is not 
supported for DataFusion "
+                            "Azure Blob Storage access; only 
tenant_id+login+password (service "
+                            "principal), sas_token, 
shared_access_key/account_key/password, or ambient "
+                            "credentials (AZURE_* environment variables, 
managed identity, workload "
+                            "identity, or az login) are used."
+                        )
+                credentials = {"account": 
self._resolve_wasb_account(conn.host, conn.login)}
+                tenant_id = _get_wasb_extra_field(extra_dejson, "tenant_id")
+                sas_token = _get_wasb_extra_field(extra_dejson, "sas_token")
+                explicit_credential = False
+                if tenant_id:

Review Comment:
   ```suggestion
                   explicit_credential = False
                   if (tenant_id := _get_wasb_extra_field(extra_dejson, 
"tenant_id")):
   ```



##########
providers/common/sql/tests/unit/common/sql/datafusion/test_engine.py:
##########
@@ -372,6 +373,292 @@ def 
test_get_credentials_gcs_rejects_unsupported_identity_fields(self, unsupport
         with pytest.raises(ValueError, match=f"{unsupported_field!r} is not 
supported"):
             engine._get_credentials(mock_conn)
 
+    def test_get_credentials_azure_with_shared_key(self):

Review Comment:
   I think we can user parameterize to simplify these tests



##########
providers/common/sql/src/airflow/providers/common/sql/datafusion/engine.py:
##########
@@ -196,6 +205,82 @@ def _fetch_extra_configs(keys: list[str]) -> dict[str, 
Any]:
                     key_path = os.environ.get("GOOGLE_APPLICATION_CREDENTIALS")
                 credentials = self._remove_none_values({"key_path": key_path, 
"keyfile_dict": keyfile_dict})
 
+            case "wasb":
+                extra_dejson = conn.extra_dejson
+                for unsupported_field in (
+                    "connection_string",
+                    "managed_identity_client_id",
+                    "workload_identity_tenant_id",
+                ):
+                    if _get_wasb_extra_field(extra_dejson, unsupported_field):
+                        raise ValueError(
+                            f"Connection field {unsupported_field!r} is not 
supported for DataFusion "
+                            "Azure Blob Storage access; only 
tenant_id+login+password (service "
+                            "principal), sas_token, 
shared_access_key/account_key/password, or ambient "
+                            "credentials (AZURE_* environment variables, 
managed identity, workload "
+                            "identity, or az login) are used."
+                        )
+                credentials = {"account": 
self._resolve_wasb_account(conn.host, conn.login)}
+                tenant_id = _get_wasb_extra_field(extra_dejson, "tenant_id")
+                sas_token = _get_wasb_extra_field(extra_dejson, "sas_token")
+                explicit_credential = False

Review Comment:
   looks like `explicit_credential = True` is covered in all cases. do we still 
need this?



##########
providers/common/sql/src/airflow/providers/common/sql/datafusion/object_storage_provider.py:
##########
@@ -107,6 +107,37 @@ def get_scheme(self) -> str:
         return "gs://"
 
 
+class AzureObjectStorageProvider(ObjectStorageProvider):
+    """Azure Object Storage Provider using DataFusion's MicrosoftAzure."""
+
+    @property
+    def get_storage_type(self) -> StorageType:

Review Comment:
   ```suggestion
       def storage_type(self) -> StorageType:
   ```



##########
providers/common/sql/src/airflow/providers/common/sql/datafusion/object_storage_provider.py:
##########
@@ -107,6 +107,37 @@ def get_scheme(self) -> str:
         return "gs://"
 
 
+class AzureObjectStorageProvider(ObjectStorageProvider):
+    """Azure Object Storage Provider using DataFusion's MicrosoftAzure."""
+
+    @property
+    def get_storage_type(self) -> StorageType:
+        """Return the storage type."""
+        return StorageType.AZURE
+
+    def create_object_store(self, path: str, connection_config: 
ConnectionConfig | None = None):
+        """Create an Azure object store using DataFusion's MicrosoftAzure."""
+        if connection_config is None:
+            raise ValueError(f"connection_config must be provided for 
{self.get_storage_type.value}")
+
+        try:
+            credentials = connection_config.credentials
+            container = self.get_bucket(path)
+
+            azure_store = MicrosoftAzure(container_name=container, 
**credentials)
+            self.log.info("Created Azure object store for container %s", 
container)
+
+            return azure_store
+
+        except BaseException as e:

Review Comment:
   Do we really need to catch `BaseException`?



##########
providers/common/sql/src/airflow/providers/common/sql/datafusion/object_storage_provider.py:
##########
@@ -107,6 +107,37 @@ def get_scheme(self) -> str:
         return "gs://"
 
 
+class AzureObjectStorageProvider(ObjectStorageProvider):
+    """Azure Object Storage Provider using DataFusion's MicrosoftAzure."""
+
+    @property
+    def get_storage_type(self) -> StorageType:
+        """Return the storage type."""

Review Comment:
   ```suggestion
   ```



##########
providers/common/sql/src/airflow/providers/common/sql/datafusion/object_storage_provider.py:
##########
@@ -107,6 +107,37 @@ def get_scheme(self) -> str:
         return "gs://"
 
 
+class AzureObjectStorageProvider(ObjectStorageProvider):
+    """Azure Object Storage Provider using DataFusion's MicrosoftAzure."""
+
+    @property
+    def get_storage_type(self) -> StorageType:

Review Comment:
   after a second thought, do we really need to make it a property?



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