[DOP-14025] Remove pathlib.PurePosixPath from API schemas

docs/changelog/next_release/41.bugfix.rst

@@ -0,0 +1 @@
+Fix 500 error while creating HDFS connection.

syncmaster/backend/api/v1/router.py

@@ -6,7 +6,7 @@
 from syncmaster.backend.api.v1.connections import router as connection_router
 from syncmaster.backend.api.v1.groups import router as group_router
 from syncmaster.backend.api.v1.queue import router as queue_router
-from syncmaster.backend.api.v1.transfers.router import router as transfer_router
+from syncmaster.backend.api.v1.transfers import router as transfer_router
 from syncmaster.backend.api.v1.users import router as user_router
 
 router = APIRouter(prefix="/v1")

syncmaster/backend/api/v1/transfers/router.py → syncmaster/backend/api/v1/transfers.py

@@ -6,9 +6,6 @@
 from kombu.exceptions import KombuError
 
 from syncmaster.backend.api.deps import UnitOfWorkMarker
-from syncmaster.backend.api.v1.transfers.utils import (
-    process_file_transfer_directory_path,
-)
 from syncmaster.backend.services import UnitOfWork, get_user
 from syncmaster.db.models import Status, User
 from syncmaster.db.utils import Permission
@@ -115,8 +112,6 @@ async def create_transfer(
     if transfer_data.group_id != queue.group_id:
         raise DifferentTransferAndQueueGroupError
 
-    transfer_data = process_file_transfer_directory_path(transfer_data)  # type: ignore
-
     async with unit_of_work:
         transfer = await unit_of_work.transfer.create(
             group_id=transfer_data.group_id,
@@ -316,8 +311,6 @@ async def update_transfer(
             params_type=transfer_data.source_params.type,
         )
 
-    transfer_data = process_file_transfer_directory_path(transfer_data)  # type: ignore
-
     async with unit_of_work:
         transfer = await unit_of_work.transfer.update(
             transfer=transfer,

syncmaster/schemas/v1/transfers/file/base.py

@@ -4,15 +4,11 @@
 
 from pathlib import PurePosixPath
 
-from pydantic import BaseModel, Field, validator
+from pydantic import BaseModel, Field, field_validator
 
 from syncmaster.schemas.v1.transfers.file_format import CSV, JSON, JSONLine
 
 
-def validate_directory_path(path: str) -> PurePosixPath:
-    return PurePosixPath(path)
-
-
 # At the moment the ReadTransferSourceParams and ReadTransferTargetParams
 # classes are identical but may change in the future
 class ReadFileTransferSource(BaseModel):
@@ -28,20 +24,30 @@ class ReadFileTransferTarget(BaseModel):
 # At the moment the CreateTransferSourceParams and CreateTransferTargetParams
 # classes are identical but may change in the future
 class CreateFileTransferSource(BaseModel):
-    directory_path: PurePosixPath
+    directory_path: str
     file_format: CSV | JSONLine | JSON = Field(..., discriminator="type")
 
     class Config:
         arbitrary_types_allowed = True
 
-    _validate_dir_path = validator("directory_path", allow_reuse=True, pre=True)(validate_directory_path)
+    @field_validator("directory_path", mode="before")
+    @classmethod
+    def _directory_path_is_valid_path(cls, value):
+        if not PurePosixPath(value).is_absolute():
+            raise ValueError("Directory path must be absolute")
+        return value
 
 
 class CreateFileTransferTarget(BaseModel):
-    directory_path: PurePosixPath
+    directory_path: str
     file_format: CSV | JSONLine = Field(..., discriminator="type")  # JSON FORMAT IS NOT SUPPORTED AS A TARGET !
 
     class Config:
         arbitrary_types_allowed = True
 
-    _validate_dir_path = validator("directory_path", allow_reuse=True, pre=True)(validate_directory_path)
+    @field_validator("directory_path", mode="before")
+    @classmethod
+    def _directory_path_is_valid_path(cls, value):
+        if not PurePosixPath(value).is_absolute():
+            raise ValueError("Directory path must be absolute")
+        return value

tests/test_unit/test_transfers/test_file_transfers/test_create_transfer.py

@@ -173,3 +173,81 @@ async def test_developer_plus_can_create_hdfs_transfer(
         "strategy_params": transfer.strategy_params,
         "queue_id": transfer.queue_id,
     }
+
+
+@pytest.mark.parametrize(
+    "create_connection_data",
+    [
+        {
+            "type": "s3",
+            "host": "localhost",
+            "port": 443,
+        },
+    ],
+    indirect=True,
+)
+@pytest.mark.parametrize(
+    "target_source_params",
+    [
+        {
+            "type": "s3",
+            "directory_path": "some/path",
+            "file_format": {
+                "type": "csv",
+            },
+        },
+    ],
+)
+async def test_cannot_create_file_transfer_with_relative_path(
+    client: AsyncClient,
+    two_group_connections: tuple[MockConnection, MockConnection],
+    group_queue: Queue,
+    mock_group: MockGroup,
+    target_source_params: dict,
+    create_connection_data: dict,
+):
+    # Arrange
+    first_connection, second_connection = two_group_connections
+    user = mock_group.get_member_of_role(UserTestRoles.Developer)
+
+    # Act
+    result = await client.post(
+        "v1/transfers",
+        headers={"Authorization": f"Bearer {user.token}"},
+        json={
+            "group_id": mock_group.group.id,
+            "name": "new test transfer",
+            "description": "",
+            "is_scheduled": False,
+            "schedule": "",
+            "source_connection_id": first_connection.id,
+            "target_connection_id": second_connection.id,
+            "source_params": target_source_params,
+            "target_params": target_source_params,
+            "strategy_params": {"type": "full"},
+            "queue_id": group_queue.id,
+        },
+    )
+
+    # Assert
+    assert result.status_code == 422
+    assert result.json() == {
+        "detail": [
+            {
+                "ctx": {"error": {}},
+                "input": "some/path",
+                "loc": ["body", "source_params", "s3", "directory_path"],
+                "msg": "Value error, Directory path must be absolute",
+                "type": "value_error",
+                "url": "https://errors.pydantic.dev/2.7/v/value_error",
+            },
+            {
+                "ctx": {"error": {}},
+                "input": "some/path",
+                "loc": ["body", "target_params", "s3", "directory_path"],
+                "msg": "Value error, Directory path must be absolute",
+                "type": "value_error",
+                "url": "https://errors.pydantic.dev/2.7/v/value_error",
+            },
+        ],
+    }