Unified Bulk Patch Endpoint for Connections in Rest API (FastAPI) (apache#45715)

* Initial implementation of Bulk Patch approach for Connections, replace default for mutable fields and fix a comment, Remove unit test for old method

* Comment update,Remove key from model_dump, Update Service logic according to tests, include unit tests, Fix Session Add for Create Action

* Remove unused print statement, unify bulk action types as enums and move them to common.py under datamodels

Author: bugraoz93

airflow/api_fastapi/core_api/datamodels/common.py

@@ -0,0 +1,52 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+"""
+Common Data Models for Airflow REST API.
+
+:meta private:
+"""
+
+from __future__ import annotations
+
+import enum
+
+from airflow.api_fastapi.core_api.base import BaseModel
+
+
+# Common Bulk Data Models
+class BulkAction(enum.Enum):
+    """Bulk Action to be performed on the used model."""
+
+    CREATE = "create"
+    DELETE = "delete"
+    UPDATE = "update"
+
+
+class BulkActionOnExistence(enum.Enum):
+    """Bulk Action to be taken if the entity already exists or not."""
+
+    FAIL = "fail"
+    SKIP = "skip"
+    OVERWRITE = "overwrite"
+
+
+# TODO: Unify All Bulk Operation Related Base Data Models
+class BulkBaseAction(BaseModel):
+    """Base class for bulk actions."""
+
+    action: BulkAction
+    action_on_existence: BulkActionOnExistence = BulkActionOnExistence.FAIL

airflow/api_fastapi/core_api/datamodels/connections.py

@@ -18,11 +18,13 @@
 from __future__ import annotations
 
 import json
+from typing import Any
 
 from pydantic import Field, field_validator
 from pydantic_core.core_schema import ValidationInfo
 
 from airflow.api_fastapi.core_api.base import BaseModel
+from airflow.api_fastapi.core_api.datamodels.common import BulkAction, BulkBaseAction
 from airflow.utils.log.secrets_masker import redact
 
 
@@ -90,8 +92,71 @@ class ConnectionBody(BaseModel):
     extra: str | None = Field(default=None)
 
 
-class ConnectionBulkBody(BaseModel):
-    """Connections Serializer for requests body."""
+class ConnectionBulkCreateAction(BulkBaseAction):
+    """Bulk Create Variable serializer for request bodies."""
+
+    action: BulkAction = BulkAction.CREATE
+    connections: list[ConnectionBody] = Field(..., description="A list of connections to be created.")
+
+
+class ConnectionBulkUpdateAction(BulkBaseAction):
+    """Bulk Update Connection serializer for request bodies."""
+
+    action: BulkAction = BulkAction.UPDATE
+    connections: list[ConnectionBody] = Field(..., description="A list of connections to be updated.")
 
-    connections: list[ConnectionBody]
-    overwrite: bool | None = Field(default=False)
+
+class ConnectionBulkDeleteAction(BulkBaseAction):
+    """Bulk Delete Connection serializer for request bodies."""
+
+    action: BulkAction = BulkAction.DELETE
+    connection_ids: list[str] = Field(..., description="A list of connection IDs to be deleted.")
+
+
+class ConnectionBulkBody(BaseModel):
+    """Request body for bulk Connection operations (create, update, delete)."""
+
+    actions: list[ConnectionBulkCreateAction | ConnectionBulkUpdateAction | ConnectionBulkDeleteAction] = (
+        Field(..., description="A list of Connection actions to perform.")
+    )
+
+
+class ConnectionBulkActionResponse(BaseModel):
+    """
+    Serializer for individual bulk action responses.
+
+    Represents the outcome of a single bulk operation (create, update, or delete).
+    The response includes a list of successful connection_ids and any errors encountered during the operation.
+    This structure helps users understand which key actions succeeded and which failed.
+    """
+
+    success: list[str] = Field(
+        default_factory=list, description="A list of connection_ids representing successful operations."
+    )
+    errors: list[dict[str, Any]] = Field(
+        default_factory=list,
+        description="A list of errors encountered during the operation, each containing details about the issue.",
+    )
+
+
+class ConnectionBulkResponse(BaseModel):
+    """
+    Serializer for responses to bulk connection operations.
+
+    This represents the results of create, update, and delete actions performed on connections in bulk.
+    Each action (if requested) is represented as a field containing details about successful connection_ids and any encountered errors.
+    Fields are populated in the response only if the respective action was part of the request, else are set None.
+    """
+
+    create: ConnectionBulkActionResponse | None = Field(
+        default=None,
+        description="Details of the bulk create operation, including successful connection_ids and errors.",
+    )
+    update: ConnectionBulkActionResponse | None = Field(
+        default=None,
+        description="Details of the bulk update operation, including successful connection_ids and errors.",
+    )
+    delete: ConnectionBulkActionResponse | None = Field(
+        default=None,
+        description="Details of the bulk delete operation, including successful connection_ids and errors.",
+    )

airflow/api_fastapi/core_api/datamodels/variables.py

@@ -18,11 +18,12 @@
 from __future__ import annotations
 
 import json
-from typing import Any, Literal
+from typing import Any
 
 from pydantic import ConfigDict, Field, model_validator
 
 from airflow.api_fastapi.core_api.base import BaseModel
+from airflow.api_fastapi.core_api.datamodels.common import BulkAction, BulkBaseAction
 from airflow.models.base import ID_LEN
 from airflow.typing_compat import Self
 from airflow.utils.log.secrets_masker import redact
@@ -76,28 +77,25 @@ class VariablesImportResponse(BaseModel):
     created_count: int
 
 
-class VariableBulkCreateAction(BaseModel):
+class VariableBulkCreateAction(BulkBaseAction):
     """Bulk Create Variable serializer for request bodies."""
 
-    action: Literal["create"] = "create"
+    action: BulkAction = BulkAction.CREATE
     variables: list[VariableBody] = Field(..., description="A list of variables to be created.")
-    action_if_exists: Literal["skip", "overwrite", "fail"] = "fail"
 
 
-class VariableBulkUpdateAction(BaseModel):
+class VariableBulkUpdateAction(BulkBaseAction):
     """Bulk Update Variable serializer for request bodies."""
 
-    action: Literal["update"] = "update"
+    action: BulkAction = BulkAction.UPDATE
     variables: list[VariableBody] = Field(..., description="A list of variables to be updated.")
-    action_if_not_exists: Literal["skip", "fail"] = "fail"
 
 
-class VariableBulkDeleteAction(BaseModel):
+class VariableBulkDeleteAction(BulkBaseAction):
     """Bulk Delete Variable serializer for request bodies."""
 
-    action: Literal["delete"] = "delete"
+    action: BulkAction = BulkAction.DELETE
     keys: list[str] = Field(..., description="A list of variable keys to be deleted.")
-    action_if_not_exists: Literal["skip", "fail"] = "fail"
 
 
 class VariableBulkBody(BaseModel):