feat: fetch app info in plugins (#18202)

api/controllers/common/helpers.py

 import re
 import urllib.parse
 import warnings
-from collections.abc import Mapping
-from typing import Any
 from uuid import uuid4
 
 import httpx
 
-from constants import DEFAULT_FILE_NUMBER_LIMITS
-
 try:
     import magic
 except ImportError:
 
 from pydantic import BaseModel
 
-from configs import dify_config
-
 
 class FileInfo(BaseModel):
     filename: str
         mimetype=mimetype,
         size=int(response.headers.get("Content-Length", -1)),
     )
-
-
-def get_parameters_from_feature_dict(*, features_dict: Mapping[str, Any], user_input_form: list[dict[str, Any]]):
-    return {
-        "opening_statement": features_dict.get("opening_statement"),
-        "suggested_questions": features_dict.get("suggested_questions", []),
-        "suggested_questions_after_answer": features_dict.get("suggested_questions_after_answer", {"enabled": False}),
-        "speech_to_text": features_dict.get("speech_to_text", {"enabled": False}),
-        "text_to_speech": features_dict.get("text_to_speech", {"enabled": False}),
-        "retriever_resource": features_dict.get("retriever_resource", {"enabled": False}),
-        "annotation_reply": features_dict.get("annotation_reply", {"enabled": False}),
-        "more_like_this": features_dict.get("more_like_this", {"enabled": False}),
-        "user_input_form": user_input_form,
-        "sensitive_word_avoidance": features_dict.get(
-            "sensitive_word_avoidance", {"enabled": False, "type": "", "configs": []}
-        ),
-        "file_upload": features_dict.get(
-            "file_upload",
-            {
-                "image": {
-                    "enabled": False,
-                    "number_limits": DEFAULT_FILE_NUMBER_LIMITS,
-                    "detail": "high",
-                    "transfer_methods": ["remote_url", "local_file"],
-                }
-            },
-        ),
-        "system_parameters": {
-            "image_file_size_limit": dify_config.UPLOAD_IMAGE_FILE_SIZE_LIMIT,
-            "video_file_size_limit": dify_config.UPLOAD_VIDEO_FILE_SIZE_LIMIT,
-            "audio_file_size_limit": dify_config.UPLOAD_AUDIO_FILE_SIZE_LIMIT,
-            "file_size_limit": dify_config.UPLOAD_FILE_SIZE_LIMIT,
-            "workflow_file_upload_limit": dify_config.WORKFLOW_FILE_UPLOAD_LIMIT,
-        },
-    }

api/controllers/console/explore/parameter.py

 from flask_restful import marshal_with  # type: ignore
 
 from controllers.common import fields
-from controllers.common import helpers as controller_helpers
 from controllers.console import api
 from controllers.console.app.error import AppUnavailableError
 from controllers.console.explore.wraps import InstalledAppResource
+from core.app.app_config.common.parameters_mapping import get_parameters_from_feature_dict
 from models.model import AppMode, InstalledApp
 from services.app_service import AppService
 
 
             user_input_form = features_dict.get("user_input_form", [])
 
-        return controller_helpers.get_parameters_from_feature_dict(
-            features_dict=features_dict, user_input_form=user_input_form
-        )
+        return get_parameters_from_feature_dict(features_dict=features_dict, user_input_form=user_input_form)
 
 
 class ExploreAppMetaApi(InstalledAppResource):

api/controllers/inner_api/plugin/plugin.py

 from core.plugin.backwards_invocation.node import PluginNodeBackwardsInvocation
 from core.plugin.backwards_invocation.tool import PluginToolBackwardsInvocation
 from core.plugin.entities.request import (
+    RequestFetchAppInfo,
     RequestInvokeApp,
     RequestInvokeEncrypt,
     RequestInvokeLLM,
         return BaseBackwardsInvocationResponse(data={"url": url}).model_dump()
 
 
+class PluginFetchAppInfoApi(Resource):
+    @setup_required
+    @plugin_inner_api_only
+    @get_user_tenant
+    @plugin_data(payload_type=RequestFetchAppInfo)
+    def post(self, user_model: Account | EndUser, tenant_model: Tenant, payload: RequestFetchAppInfo):
+        return BaseBackwardsInvocationResponse(
+            data=PluginAppBackwardsInvocation.fetch_app_info(payload.app_id, tenant_model.id)
+        ).model_dump()
+
+
 api.add_resource(PluginInvokeLLMApi, "/invoke/llm")
 api.add_resource(PluginInvokeTextEmbeddingApi, "/invoke/text-embedding")
 api.add_resource(PluginInvokeRerankApi, "/invoke/rerank")
 api.add_resource(PluginInvokeEncryptApi, "/invoke/encrypt")
 api.add_resource(PluginInvokeSummaryApi, "/invoke/summary")
 api.add_resource(PluginUploadFileRequestApi, "/upload/file/request")
+api.add_resource(PluginFetchAppInfoApi, "/fetch/app/info")

api/controllers/service_api/app/app.py

 from flask_restful import Resource, marshal_with  # type: ignore
 
 from controllers.common import fields
-from controllers.common import helpers as controller_helpers
 from controllers.service_api import api
 from controllers.service_api.app.error import AppUnavailableError
 from controllers.service_api.wraps import validate_app_token
+from core.app.app_config.common.parameters_mapping import get_parameters_from_feature_dict
 from models.model import App, AppMode
 from services.app_service import AppService
 
 
             user_input_form = features_dict.get("user_input_form", [])
 
-        return controller_helpers.get_parameters_from_feature_dict(
-            features_dict=features_dict, user_input_form=user_input_form
-        )
+        return get_parameters_from_feature_dict(features_dict=features_dict, user_input_form=user_input_form)
 
 
 class AppMetaApi(Resource):

api/controllers/web/app.py

 from flask_restful import marshal_with  # type: ignore
 
 from controllers.common import fields
-from controllers.common import helpers as controller_helpers
 from controllers.web import api
 from controllers.web.error import AppUnavailableError
 from controllers.web.wraps import WebApiResource
+from core.app.app_config.common.parameters_mapping import get_parameters_from_feature_dict
 from models.model import App, AppMode
 from services.app_service import AppService
 
 
             user_input_form = features_dict.get("user_input_form", [])
 
-        return controller_helpers.get_parameters_from_feature_dict(
-            features_dict=features_dict, user_input_form=user_input_form
-        )
+        return get_parameters_from_feature_dict(features_dict=features_dict, user_input_form=user_input_form)
 
 
 class AppMeta(WebApiResource):

api/core/app/app_config/common/parameters_mapping/__init__.py

+from collections.abc import Mapping
+from typing import Any
+
+from configs import dify_config
+from constants import DEFAULT_FILE_NUMBER_LIMITS
+
+
+def get_parameters_from_feature_dict(
+    *, features_dict: Mapping[str, Any], user_input_form: list[dict[str, Any]]
+) -> Mapping[str, Any]:
+    """
+    Mapping from feature dict to webapp parameters
+    """
+    return {
+        "opening_statement": features_dict.get("opening_statement"),
+        "suggested_questions": features_dict.get("suggested_questions", []),
+        "suggested_questions_after_answer": features_dict.get("suggested_questions_after_answer", {"enabled": False}),
+        "speech_to_text": features_dict.get("speech_to_text", {"enabled": False}),
+        "text_to_speech": features_dict.get("text_to_speech", {"enabled": False}),
+        "retriever_resource": features_dict.get("retriever_resource", {"enabled": False}),
+        "annotation_reply": features_dict.get("annotation_reply", {"enabled": False}),
+        "more_like_this": features_dict.get("more_like_this", {"enabled": False}),
+        "user_input_form": user_input_form,
+        "sensitive_word_avoidance": features_dict.get(
+            "sensitive_word_avoidance", {"enabled": False, "type": "", "configs": []}
+        ),
+        "file_upload": features_dict.get(
+            "file_upload",
+            {
+                "image": {
+                    "enabled": False,
+                    "number_limits": DEFAULT_FILE_NUMBER_LIMITS,
+                    "detail": "high",
+                    "transfer_methods": ["remote_url", "local_file"],
+                }
+            },
+        ),
+        "system_parameters": {
+            "image_file_size_limit": dify_config.UPLOAD_IMAGE_FILE_SIZE_LIMIT,
+            "video_file_size_limit": dify_config.UPLOAD_VIDEO_FILE_SIZE_LIMIT,
+            "audio_file_size_limit": dify_config.UPLOAD_AUDIO_FILE_SIZE_LIMIT,
+            "file_size_limit": dify_config.UPLOAD_FILE_SIZE_LIMIT,
+            "workflow_file_upload_limit": dify_config.WORKFLOW_FILE_UPLOAD_LIMIT,
+        },
+    }

api/core/plugin/backwards_invocation/app.py

 from typing import Optional, Union
 
 from controllers.service_api.wraps import create_or_update_end_user_for_user_id
+from core.app.app_config.common.parameters_mapping import get_parameters_from_feature_dict
 from core.app.apps.advanced_chat.app_generator import AdvancedChatAppGenerator
 from core.app.apps.agent_chat.app_generator import AgentChatAppGenerator
 from core.app.apps.chat.app_generator import ChatAppGenerator
 
 
 class PluginAppBackwardsInvocation(BaseBackwardsInvocation):
+    @classmethod
+    def fetch_app_info(cls, app_id: str, tenant_id: str) -> Mapping:
+        """
+        Fetch app info
+        """
+        app = cls._get_app(app_id, tenant_id)
+
+        """Retrieve app parameters."""
+        if app.mode in {AppMode.ADVANCED_CHAT.value, AppMode.WORKFLOW.value}:
+            workflow = app.workflow
+            if workflow is None:
+                raise ValueError("unexpected app type")
+
+            features_dict = workflow.features_dict
+            user_input_form = workflow.user_input_form(to_old_structure=True)
+        else:
+            app_model_config = app.app_model_config
+            if app_model_config is None:
+                raise ValueError("unexpected app type")
+
+            features_dict = app_model_config.to_dict()
+
+            user_input_form = features_dict.get("user_input_form", [])
+
+        return {
+            "data": get_parameters_from_feature_dict(features_dict=features_dict, user_input_form=user_input_form),
+        }
+
     @classmethod
     def invoke_app(
         cls,

api/core/plugin/entities/request.py

 
     filename: str
     mimetype: str
+
+
+class RequestFetchAppInfo(BaseModel):
+    """
+    Request to fetch app info
+    """
+
+    app_id: str