refactor(api): use standalone graphon package (#34209)

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

api/models/human_input.py

@@ -3,11 +3,11 @@ from enum import StrEnum
 from typing import Annotated, Literal, Self, final
 
 import sqlalchemy as sa
+from graphon.nodes.human_input.enums import HumanInputFormKind, HumanInputFormStatus
 from pydantic import BaseModel, Field
 from sqlalchemy.orm import Mapped, mapped_column, relationship
 
 from core.workflow.human_input_compat import DeliveryMethodType
-from graphon.nodes.human_input.enums import HumanInputFormKind, HumanInputFormStatus
 from libs.helper import generate_string
 
 from .base import Base, DefaultFieldsMixin

api/models/model.py

@@ -14,6 +14,9 @@ from uuid import uuid4
 import sqlalchemy as sa
 from flask import request
 from flask_login import UserMixin  # type: ignore[import-untyped]
+from graphon.enums import WorkflowExecutionStatus
+from graphon.file import FILE_MODEL_IDENTITY, File, FileTransferMethod, FileType
+from graphon.file import helpers as file_helpers
 from sqlalchemy import BigInteger, Float, Index, PrimaryKeyConstraint, String, exists, func, select, text
 from sqlalchemy.orm import Mapped, Session, mapped_column
 from typing_extensions import TypedDict
@@ -22,9 +25,6 @@ from configs import dify_config
 from constants import DEFAULT_FILE_NUMBER_LIMITS
 from core.tools.signature import sign_tool_file
 from extensions.storage.storage_type import StorageType
-from graphon.enums import WorkflowExecutionStatus
-from graphon.file import FILE_MODEL_IDENTITY, File, FileTransferMethod, FileType
-from graphon.file import helpers as file_helpers
 from libs.helper import generate_string  # type: ignore[import-not-found]
 from libs.uuid_utils import uuidv7
 from models.utils.file_input_compat import build_file_from_input_mapping

api/models/utils/file_input_compat.py

@@ -4,9 +4,10 @@ from collections.abc import Callable, Mapping
 from functools import lru_cache
 from typing import Any
 
-from core.workflow.file_reference import parse_file_reference
 from graphon.file import File, FileTransferMethod
 
+from core.workflow.file_reference import parse_file_reference
+
 
 @lru_cache(maxsize=1)
 def _get_file_access_controller():

api/models/workflow.py

@@ -8,6 +8,19 @@ from typing import TYPE_CHECKING, Any, Optional, TypedDict, Union, cast
 from uuid import uuid4
 
 import sqlalchemy as sa
+from graphon.entities.graph_config import NodeConfigDict, NodeConfigDictAdapter
+from graphon.entities.pause_reason import HumanInputRequired, PauseReason, PauseReasonType, SchedulingPause
+from graphon.enums import (
+    BuiltinNodeTypes,
+    NodeType,
+    WorkflowExecutionStatus,
+    WorkflowNodeExecutionMetadataKey,
+    WorkflowNodeExecutionStatus,
+)
+from graphon.file import File
+from graphon.file.constants import maybe_file_object
+from graphon.variables import utils as variable_utils
+from graphon.variables.variables import FloatVariable, IntegerVariable, RAGPipelineVariable, StringVariable
 from sqlalchemy import (
     DateTime,
     Index,
@@ -31,19 +44,6 @@ from core.workflow.variable_prefixes import (
 )
 from extensions.ext_storage import Storage
 from factories.variable_factory import TypeMismatchError, build_segment_with_type
-from graphon.entities.graph_config import NodeConfigDict, NodeConfigDictAdapter
-from graphon.entities.pause_reason import HumanInputRequired, PauseReason, PauseReasonType, SchedulingPause
-from graphon.enums import (
-    BuiltinNodeTypes,
-    NodeType,
-    WorkflowExecutionStatus,
-    WorkflowNodeExecutionMetadataKey,
-    WorkflowNodeExecutionStatus,
-)
-from graphon.file.constants import maybe_file_object
-from graphon.file.models import File
-from graphon.variables import utils as variable_utils
-from graphon.variables.variables import FloatVariable, IntegerVariable, RAGPipelineVariable, StringVariable
 from libs.datetime_utils import naive_utc_now
 from libs.uuid_utils import uuidv7
 
@@ -53,10 +53,11 @@ if TYPE_CHECKING:
     from .model import AppMode, UploadFile
 
 
+from graphon.variables import SecretVariable, Segment, SegmentType, VariableBase
+
 from constants import DEFAULT_FILE_NUMBER_LIMITS, HIDDEN_VALUE
 from core.helper import encrypter
 from factories import variable_factory
-from graphon.variables import SecretVariable, Segment, SegmentType, VariableBase
 from libs import helper
 
 from .account import Account
@@ -1466,8 +1467,6 @@ class WorkflowDraftVariable(Base):
 
     # From `VARIABLE_PATTERN`, we may conclude that the length of a top level variable is less than
     # 80 chars.
-    #
-    # ref: api/graphon/entities/variable_pool.py:18
     name: Mapped[str] = mapped_column(sa.String(255), nullable=False)
     description: Mapped[str] = mapped_column(
         sa.String(255),