Migrate public endpoint Get Task to FastAPI, with main resynced

airflow/api_connexion/endpoints/task_endpoint.py

@@ -25,12 +25,14 @@
 from airflow.auth.managers.models.resource_details import DagAccessEntity
 from airflow.exceptions import TaskNotFound
 from airflow.utils.airflow_flask_app import get_airflow_app
+from airflow.utils.api_migration import mark_fastapi_migration_done
 
 if TYPE_CHECKING:
     from airflow import DAG
     from airflow.api_connexion.types import APIResponse
 
 
+@mark_fastapi_migration_done
 @security.requires_access_dag("GET", DagAccessEntity.TASK)
 def get_task(*, dag_id: str, task_id: str) -> APIResponse:
     """Get simplified representation of a task."""

airflow/api_fastapi/common/types.py

@@ -16,10 +16,72 @@
 # under the License.
 from __future__ import annotations
 
-from pydantic import AfterValidator, AwareDatetime
+import inspect
+from datetime import timedelta
+
+from pydantic import AfterValidator, AliasGenerator, AwareDatetime, BaseModel, BeforeValidator, ConfigDict
 from typing_extensions import Annotated
 
+from airflow.models.mappedoperator import MappedOperator
+from airflow.models.operator import Operator
+from airflow.serialization.serialized_objects import SerializedBaseOperator
 from airflow.utils import timezone
 
 UtcDateTime = Annotated[AwareDatetime, AfterValidator(lambda d: d.astimezone(timezone.utc))]
 """UTCDateTime is a datetime with timezone information"""
+
+
+def _validate_timedelta_field(td: timedelta | None) -> TimeDelta | None:
+    """Validate the execution_timeout property."""
+    if td is None:
+        return None
+    return TimeDelta(
+        days=td.days,
+        seconds=td.seconds,
+        microseconds=td.microseconds,
+    )
+
+
+class TimeDelta(BaseModel):
+    """TimeDelta can be used to interact with datetime.timedelta objects."""
+
+    object_type: str = "TimeDelta"
+    days: int
+    seconds: int
+    microseconds: int
+
+    model_config = ConfigDict(
+        alias_generator=AliasGenerator(
+            serialization_alias=lambda field_name: {
+                "object_type": "__type",
+            }.get(field_name, field_name),
+        )
+    )
+
+
+TimeDeltaWithValidation = Annotated[TimeDelta, BeforeValidator(_validate_timedelta_field)]
+
+
+def get_class_ref(obj: Operator) -> dict[str, str | None]:
+    """Return the class_ref dict for obj."""
+    is_mapped_or_serialized = isinstance(obj, (MappedOperator, SerializedBaseOperator))
+
+    module_path = None
+    if is_mapped_or_serialized:
+        module_path = obj._task_module
+    else:
+        module_type = inspect.getmodule(obj)
+        module_path = module_type.__name__ if module_type else None
+
+    class_name = None
+    if is_mapped_or_serialized:
+        class_name = obj._task_type
+    elif obj.__class__ is type:
+        class_name = obj.__name__
+    else:
+        class_name = type(obj).__name__
+
+    return {
+        "module_path": module_path,
+        "class_name": class_name,
+    }

airflow/api_fastapi/core_api/openapi/v1-generated.yaml

@@ -3104,6 +3104,62 @@ paths:
             application/json:
               schema:
                 $ref: '#/components/schemas/HTTPValidationError'
+  /public/dags/{dag_id}/tasks/{task_id}:
+    get:
+      tags:
+      - Task
+      summary: Get Task
+      description: Get simplified representation of a task.
+      operationId: get_task
+      parameters:
+      - name: dag_id
+        in: path
+        required: true
+        schema:
+          type: string
+          title: Dag Id
+      - name: task_id
+        in: path
+        required: true
+        schema:
+          title: Task Id
+      responses:
+        '200':
+          description: Successful Response
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/TaskResponse'
+        '400':
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/HTTPExceptionResponse'
+          description: Bad Request
+        '401':
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/HTTPExceptionResponse'
+          description: Unauthorized
+        '403':
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/HTTPExceptionResponse'
+          description: Forbidden
+        '404':
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/HTTPExceptionResponse'
+          description: Not Found
+        '422':
+          description: Validation Error
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/HTTPValidationError'
 components:
   schemas:
     AppBuilderMenuItemResponse:
@@ -4907,6 +4963,196 @@ components:
       - triggerer_job
       title: TaskInstanceResponse
       description: TaskInstance serializer for responses.
+    TaskResponse:
+      properties:
+        task_id:
+          anyOf:
+          - type: string
+          - type: 'null'
+          title: Task Id
+        task_display_name:
+          anyOf:
+          - type: string
+          - type: 'null'
+          title: Task Display Name
+        owner:
+          anyOf:
+          - type: string
+          - type: 'null'
+          title: Owner
+        start_date:
+          anyOf:
+          - type: string
+            format: date-time
+          - type: 'null'
+          title: Start Date
+        end_date:
+          anyOf:
+          - type: string
+            format: date-time
+          - type: 'null'
+          title: End Date
+        trigger_rule:
+          anyOf:
+          - type: string
+          - type: 'null'
+          title: Trigger Rule
+        depends_on_past:
+          type: boolean
+          title: Depends On Past
+        wait_for_downstream:
+          type: boolean
+          title: Wait For Downstream
+        retries:
+          anyOf:
+          - type: number
+          - type: 'null'
+          title: Retries
+        queue:
+          anyOf:
+          - type: string
+          - type: 'null'
+          title: Queue
+        pool:
+          anyOf:
+          - type: string
+          - type: 'null'
+          title: Pool
+        pool_slots:
+          anyOf:
+          - type: number
+          - type: 'null'
+          title: Pool Slots
+        execution_timeout:
+          anyOf:
+          - $ref: '#/components/schemas/TimeDelta'
+          - type: 'null'
+        retry_delay:
+          anyOf:
+          - $ref: '#/components/schemas/TimeDelta'
+          - type: 'null'
+        retry_exponential_backoff:
+          type: boolean
+          title: Retry Exponential Backoff
+        priority_weight:
+          anyOf:
+          - type: number
+          - type: 'null'
+          title: Priority Weight
+        weight_rule:
+          anyOf:
+          - type: string
+          - type: 'null'
+          title: Weight Rule
+        ui_color:
+          anyOf:
+          - type: string
+          - type: 'null'
+          title: Ui Color
+        ui_fgcolor:
+          anyOf:
+          - type: string
+          - type: 'null'
+          title: Ui Fgcolor
+        template_fields:
+          anyOf:
+          - items:
+              type: string
+            type: array
+          - type: 'null'
+          title: Template Fields
+        downstream_task_ids:
+          anyOf:
+          - items:
+              type: string
+            type: array
+          - type: 'null'
+          title: Downstream Task Ids
+        doc_md:
+          anyOf:
+          - type: string
+          - type: 'null'
+          title: Doc Md
+        operator_name:
+          anyOf:
+          - type: string
+          - type: 'null'
+          title: Operator Name
+        params:
+          anyOf:
+          - type: object
+          - type: 'null'
+          title: Params
+        class_ref:
+          anyOf:
+          - type: object
+          - type: 'null'
+          title: Class Ref
+        is_mapped:
+          anyOf:
+          - type: boolean
+          - type: 'null'
+          title: Is Mapped
+        extra_links:
+          items:
+            type: string
+          type: array
+          title: Extra Links
+          description: Extract and return extra_links.
+          readOnly: true
+      type: object
+      required:
+      - task_id
+      - task_display_name
+      - owner
+      - start_date
+      - end_date
+      - trigger_rule
+      - depends_on_past
+      - wait_for_downstream
+      - retries
+      - queue
+      - pool
+      - pool_slots
+      - execution_timeout
+      - retry_delay
+      - retry_exponential_backoff
+      - priority_weight
+      - weight_rule
+      - ui_color
+      - ui_fgcolor
+      - template_fields
+      - downstream_task_ids
+      - doc_md
+      - operator_name
+      - params
+      - class_ref
+      - is_mapped
+      - extra_links
+      title: TaskResponse
+      description: Task serializer for responses.
+    TimeDelta:
+      properties:
+        __type:
+          type: string
+          title: '  Type'
+          default: TimeDelta
+        days:
+          type: integer
+          title: Days
+        seconds:
+          type: integer
+          title: Seconds
+        microseconds:
+          type: integer
+          title: Microseconds
+      type: object
+      required:
+      - days
+      - seconds
+      - microseconds
+      title: TimeDelta
+      description: TimeDelta can be used to interact with datetime.timedelta objects.
     TriggerResponse:
       properties:
         id:

airflow/api_fastapi/core_api/routes/public/__init__.py

@@ -32,6 +32,7 @@
 from airflow.api_fastapi.core_api.routes.public.pools import pools_router
 from airflow.api_fastapi.core_api.routes.public.providers import providers_router
 from airflow.api_fastapi.core_api.routes.public.task_instances import task_instances_router
+from airflow.api_fastapi.core_api.routes.public.tasks import tasks_router
 from airflow.api_fastapi.core_api.routes.public.variables import variables_router
 from airflow.api_fastapi.core_api.routes.public.version import version_router
 
@@ -56,3 +57,5 @@
 public_router.include_router(variables_router)
 public_router.include_router(version_router)
 public_router.include_router(dag_stats_router)
+public_router.include_router(plugins_router)
+public_router.include_router(tasks_router)