dify
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287
dify/api/controllers/web/message.py
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287
dify/api/controllers/web/message.py
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import logging
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from flask_restx import fields, marshal_with, reqparse
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from flask_restx.inputs import int_range
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from werkzeug.exceptions import InternalServerError, NotFound
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from controllers.web import web_ns
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from controllers.web.error import (
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AppMoreLikeThisDisabledError,
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AppSuggestedQuestionsAfterAnswerDisabledError,
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CompletionRequestError,
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NotChatAppError,
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NotCompletionAppError,
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ProviderModelCurrentlyNotSupportError,
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ProviderNotInitializeError,
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ProviderQuotaExceededError,
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)
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from controllers.web.wraps import WebApiResource
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from core.app.entities.app_invoke_entities import InvokeFrom
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from core.errors.error import ModelCurrentlyNotSupportError, ProviderTokenNotInitError, QuotaExceededError
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from core.model_runtime.errors.invoke import InvokeError
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from fields.conversation_fields import message_file_fields
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from fields.message_fields import agent_thought_fields, feedback_fields, retriever_resource_fields
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from fields.raws import FilesContainedField
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from libs import helper
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from libs.helper import TimestampField, uuid_value
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from models.model import AppMode
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from services.app_generate_service import AppGenerateService
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from services.errors.app import MoreLikeThisDisabledError
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from services.errors.conversation import ConversationNotExistsError
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from services.errors.message import (
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FirstMessageNotExistsError,
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MessageNotExistsError,
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SuggestedQuestionsAfterAnswerDisabledError,
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)
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from services.message_service import MessageService
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logger = logging.getLogger(__name__)
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@web_ns.route("/messages")
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class MessageListApi(WebApiResource):
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message_fields = {
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"id": fields.String,
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"conversation_id": fields.String,
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"parent_message_id": fields.String,
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"inputs": FilesContainedField,
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"query": fields.String,
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"answer": fields.String(attribute="re_sign_file_url_answer"),
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"message_files": fields.List(fields.Nested(message_file_fields)),
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"feedback": fields.Nested(feedback_fields, attribute="user_feedback", allow_null=True),
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"retriever_resources": fields.List(fields.Nested(retriever_resource_fields)),
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"created_at": TimestampField,
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"agent_thoughts": fields.List(fields.Nested(agent_thought_fields)),
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"metadata": fields.Raw(attribute="message_metadata_dict"),
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"status": fields.String,
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"error": fields.String,
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}
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message_infinite_scroll_pagination_fields = {
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"limit": fields.Integer,
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"has_more": fields.Boolean,
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"data": fields.List(fields.Nested(message_fields)),
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}
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@web_ns.doc("Get Message List")
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@web_ns.doc(description="Retrieve paginated list of messages from a conversation in a chat application.")
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@web_ns.doc(
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params={
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"conversation_id": {"description": "Conversation UUID", "type": "string", "required": True},
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"first_id": {"description": "First message ID for pagination", "type": "string", "required": False},
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"limit": {
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"description": "Number of messages to return (1-100)",
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"type": "integer",
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"required": False,
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"default": 20,
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},
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}
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)
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@web_ns.doc(
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responses={
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200: "Success",
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400: "Bad Request",
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401: "Unauthorized",
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403: "Forbidden",
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404: "Conversation Not Found or Not a Chat App",
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500: "Internal Server Error",
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}
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)
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@marshal_with(message_infinite_scroll_pagination_fields)
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def get(self, app_model, end_user):
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app_mode = AppMode.value_of(app_model.mode)
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if app_mode not in {AppMode.CHAT, AppMode.AGENT_CHAT, AppMode.ADVANCED_CHAT}:
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raise NotChatAppError()
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parser = (
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reqparse.RequestParser()
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.add_argument("conversation_id", required=True, type=uuid_value, location="args")
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.add_argument("first_id", type=uuid_value, location="args")
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.add_argument("limit", type=int_range(1, 100), required=False, default=20, location="args")
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)
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args = parser.parse_args()
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try:
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return MessageService.pagination_by_first_id(
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app_model, end_user, args["conversation_id"], args["first_id"], args["limit"]
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)
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except ConversationNotExistsError:
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raise NotFound("Conversation Not Exists.")
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except FirstMessageNotExistsError:
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raise NotFound("First Message Not Exists.")
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@web_ns.route("/messages/<uuid:message_id>/feedbacks")
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class MessageFeedbackApi(WebApiResource):
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feedback_response_fields = {
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"result": fields.String,
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}
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@web_ns.doc("Create Message Feedback")
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@web_ns.doc(description="Submit feedback (like/dislike) for a specific message.")
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@web_ns.doc(params={"message_id": {"description": "Message UUID", "type": "string", "required": True}})
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@web_ns.doc(
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params={
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"rating": {
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"description": "Feedback rating",
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"type": "string",
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"enum": ["like", "dislike"],
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"required": False,
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},
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"content": {"description": "Feedback content/comment", "type": "string", "required": False},
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}
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)
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@web_ns.doc(
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responses={
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200: "Feedback submitted successfully",
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400: "Bad Request",
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401: "Unauthorized",
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403: "Forbidden",
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404: "Message Not Found",
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500: "Internal Server Error",
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}
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)
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@marshal_with(feedback_response_fields)
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def post(self, app_model, end_user, message_id):
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message_id = str(message_id)
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parser = (
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reqparse.RequestParser()
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.add_argument("rating", type=str, choices=["like", "dislike", None], location="json")
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.add_argument("content", type=str, location="json", default=None)
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)
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args = parser.parse_args()
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try:
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MessageService.create_feedback(
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app_model=app_model,
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message_id=message_id,
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user=end_user,
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rating=args.get("rating"),
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content=args.get("content"),
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)
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except MessageNotExistsError:
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raise NotFound("Message Not Exists.")
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return {"result": "success"}
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@web_ns.route("/messages/<uuid:message_id>/more-like-this")
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class MessageMoreLikeThisApi(WebApiResource):
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@web_ns.doc("Generate More Like This")
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@web_ns.doc(description="Generate a new completion similar to an existing message (completion apps only).")
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@web_ns.doc(
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params={
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"message_id": {"description": "Message UUID", "type": "string", "required": True},
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"response_mode": {
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"description": "Response mode",
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"type": "string",
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"enum": ["blocking", "streaming"],
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"required": True,
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},
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}
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)
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@web_ns.doc(
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responses={
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200: "Success",
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400: "Bad Request - Not a completion app or feature disabled",
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401: "Unauthorized",
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403: "Forbidden",
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404: "Message Not Found",
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500: "Internal Server Error",
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}
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)
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def get(self, app_model, end_user, message_id):
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if app_model.mode != "completion":
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raise NotCompletionAppError()
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message_id = str(message_id)
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parser = reqparse.RequestParser().add_argument(
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"response_mode", type=str, required=True, choices=["blocking", "streaming"], location="args"
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)
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args = parser.parse_args()
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streaming = args["response_mode"] == "streaming"
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try:
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response = AppGenerateService.generate_more_like_this(
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app_model=app_model,
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user=end_user,
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message_id=message_id,
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invoke_from=InvokeFrom.WEB_APP,
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streaming=streaming,
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)
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return helper.compact_generate_response(response)
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except MessageNotExistsError:
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raise NotFound("Message Not Exists.")
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except MoreLikeThisDisabledError:
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raise AppMoreLikeThisDisabledError()
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except ProviderTokenNotInitError as ex:
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raise ProviderNotInitializeError(ex.description)
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except QuotaExceededError:
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raise ProviderQuotaExceededError()
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except ModelCurrentlyNotSupportError:
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raise ProviderModelCurrentlyNotSupportError()
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except InvokeError as e:
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raise CompletionRequestError(e.description)
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except ValueError as e:
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raise e
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except Exception:
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logger.exception("internal server error.")
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raise InternalServerError()
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@web_ns.route("/messages/<uuid:message_id>/suggested-questions")
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class MessageSuggestedQuestionApi(WebApiResource):
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suggested_questions_response_fields = {
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"data": fields.List(fields.String),
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}
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@web_ns.doc("Get Suggested Questions")
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@web_ns.doc(description="Get suggested follow-up questions after a message (chat apps only).")
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@web_ns.doc(params={"message_id": {"description": "Message UUID", "type": "string", "required": True}})
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@web_ns.doc(
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responses={
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200: "Success",
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400: "Bad Request - Not a chat app or feature disabled",
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401: "Unauthorized",
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403: "Forbidden",
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404: "Message Not Found or Conversation Not Found",
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500: "Internal Server Error",
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}
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)
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@marshal_with(suggested_questions_response_fields)
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def get(self, app_model, end_user, message_id):
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app_mode = AppMode.value_of(app_model.mode)
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if app_mode not in {AppMode.CHAT, AppMode.AGENT_CHAT, AppMode.ADVANCED_CHAT}:
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raise NotCompletionAppError()
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message_id = str(message_id)
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try:
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questions = MessageService.get_suggested_questions_after_answer(
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app_model=app_model, user=end_user, message_id=message_id, invoke_from=InvokeFrom.WEB_APP
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)
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# questions is a list of strings, not a list of Message objects
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# so we can directly return it
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except MessageNotExistsError:
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raise NotFound("Message not found")
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except ConversationNotExistsError:
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raise NotFound("Conversation not found")
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except SuggestedQuestionsAfterAnswerDisabledError:
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raise AppSuggestedQuestionsAfterAnswerDisabledError()
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except ProviderTokenNotInitError as ex:
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raise ProviderNotInitializeError(ex.description)
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except QuotaExceededError:
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raise ProviderQuotaExceededError()
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except ModelCurrentlyNotSupportError:
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raise ProviderModelCurrentlyNotSupportError()
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except InvokeError as e:
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raise CompletionRequestError(e.description)
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except Exception:
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logger.exception("internal server error.")
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raise InternalServerError()
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return {"data": questions}
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