feat: implement error handling in dynamic select options API and update response structure

api/controllers/console/workspace/plugin.py

@@ -518,6 +518,7 @@ class PluginFetchDynamicSelectOptionsApi(Resource):
         parser.add_argument("provider_type", type=str, required=True, location="args")
         args = parser.parse_args()
 
+        try:
             options = PluginParameterService.get_dynamic_select_options(
                 tenant_id,
                 user_id,
@@ -527,6 +528,8 @@ class PluginFetchDynamicSelectOptionsApi(Resource):
                 args["parameter"],
                 args["provider_type"],
             )
+        except PluginDaemonClientSideError as e:
+            raise ValueError(e)
 
         return jsonable_encoder({"options": options})
 

api/core/plugin/entities/plugin_daemon.py

@@ -1,4 +1,4 @@
-from collections.abc import Mapping
+from collections.abc import Mapping, Sequence
 from datetime import datetime
 from enum import StrEnum
 from typing import Any, Generic, Optional, TypeVar
@@ -9,6 +9,7 @@ from core.agent.plugin_entities import AgentProviderEntityWithPlugin
 from core.model_runtime.entities.model_entities import AIModelEntity
 from core.model_runtime.entities.provider_entities import ProviderEntity
 from core.plugin.entities.base import BasePluginEntity
+from core.plugin.entities.parameters import PluginParameterOption
 from core.plugin.entities.plugin import PluginDeclaration, PluginEntity
 from core.tools.entities.common_entities import I18nObject
 from core.tools.entities.tool_entities import ToolProviderEntityWithPlugin
@@ -186,3 +187,7 @@ class PluginOAuthCredentialsResponse(BaseModel):
 class PluginListResponse(BaseModel):
     list: list[PluginEntity]
     total: int
+
+
+class PluginDynamicSelectOptionsResponse(BaseModel):
+    options: Sequence[PluginParameterOption] = Field(description="The options of the dynamic select.")

api/core/plugin/impl/dynamic_select.py

@@ -1,7 +1,8 @@
-from collections.abc import Mapping, Sequence
+from collections.abc import Mapping
 from typing import Any
 
-from core.plugin.entities.parameters import PluginParameterOption
+from core.plugin.entities.plugin import GenericProviderID
+from core.plugin.entities.plugin_daemon import PluginDynamicSelectOptionsResponse
 from core.plugin.impl.base import BasePluginClient
 
 
@@ -15,18 +16,18 @@ class DynamicSelectClient(BasePluginClient):
         action: str,
         credentials: Mapping[str, Any],
         parameter: str,
-    ) -> Sequence[PluginParameterOption]:
+    ) -> PluginDynamicSelectOptionsResponse:
         """
         Fetch dynamic select options for a plugin parameter.
         """
-        return self._request_with_plugin_daemon_response(
+        response = self._request_with_plugin_daemon_response_stream(
             "POST",
             f"plugin/{tenant_id}/dispatch/dynamic_select/fetch_parameter_options",
-            list[PluginParameterOption],
+            PluginDynamicSelectOptionsResponse,
             data={
                 "user_id": user_id,
                 "data": {
-                    "provider": provider,
+                    "provider": GenericProviderID(provider).provider_name,
                     "credentials": credentials,
                     "provider_action": action,
                     "parameter": parameter,
@@ -37,3 +38,8 @@ class DynamicSelectClient(BasePluginClient):
                 "Content-Type": "application/json",
             },
         )
+
+        for options in response:
+            return options
+
+        raise ValueError("Plugin service returned no options")

api/services/plugin/plugin_parameter_service.py

@@ -36,6 +36,19 @@ class PluginParameterService:
 
         match provider_type:
             case "tool":
+                provider_controller = ToolManager.get_builtin_provider(provider, tenant_id)
+                # init tool configuration
+                tool_configuration = ProviderConfigEncrypter(
+                    tenant_id=tenant_id,
+                    config=[x.to_basic_provider_config() for x in provider_controller.get_credentials_schema()],
+                    provider_type=provider_controller.provider_type.value,
+                    provider_identity=provider_controller.entity.identity.name,
+                )
+
+                # check if credentials are required
+                if not provider_controller.need_credentials:
+                    credentials = {}
+                else:
                     # fetch credentials from db
                     with Session(db.engine) as session:
                         db_record = (
@@ -50,20 +63,12 @@ class PluginParameterService:
                     if db_record is None:
                         raise ValueError(f"Builtin provider {provider} not found when fetching credentials")
 
-                credentials = db_record.credentials
-                provider_controller = ToolManager.get_builtin_provider(provider, tenant_id)
-                # init tool configuration
-                tool_configuration = ProviderConfigEncrypter(
-                    tenant_id=tenant_id,
-                    config=[x.to_basic_provider_config() for x in provider_controller.get_credentials_schema()],
-                    provider_type=provider_controller.provider_type.value,
-                    provider_identity=provider_controller.entity.identity.name,
-                )
-
-                credentials = tool_configuration.decrypt(credentials)
+                    credentials = tool_configuration.decrypt(db_record.credentials)
             case _:
                 raise ValueError(f"Invalid provider type: {provider_type}")
 
-        return DynamicSelectClient().fetch_dynamic_select_options(
-            tenant_id, user_id, plugin_id, provider, action, credentials, parameter
+        return (
+            DynamicSelectClient()
+            .fetch_dynamic_select_options(tenant_id, user_id, plugin_id, provider, action, credentials, parameter)
+            .options
         )