forked from open-webui/open-webui
fix: rag
This commit is contained in:
Timothy J. Baek
parent
88d324b52d
commit
8df6b137cb
2 changed files with 120 additions and 98 deletions
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@ -95,3 +95,89 @@ def rag_template(template: str, context: str, query: str):
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template = re.sub(r"\[query\]", query, template)
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return template
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def rag_messages(docs, messages, template, k, embedding_function):
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print(docs)
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last_user_message_idx = None
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for i in range(len(messages) - 1, -1, -1):
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if messages[i]["role"] == "user":
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last_user_message_idx = i
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break
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user_message = messages[last_user_message_idx]
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if isinstance(user_message["content"], list):
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# Handle list content input
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content_type = "list"
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query = ""
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for content_item in user_message["content"]:
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if content_item["type"] == "text":
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query = content_item["text"]
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break
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elif isinstance(user_message["content"], str):
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# Handle text content input
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content_type = "text"
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query = user_message["content"]
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else:
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# Fallback in case the input does not match expected types
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content_type = None
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query = ""
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relevant_contexts = []
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for doc in docs:
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context = None
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try:
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if doc["type"] == "collection":
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context = query_collection(
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collection_names=doc["collection_names"],
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query=query,
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k=k,
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embedding_function=embedding_function,
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)
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else:
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context = query_doc(
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collection_name=doc["collection_name"],
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query=query,
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k=k,
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embedding_function=embedding_function,
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)
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except Exception as e:
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print(e)
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context = None
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relevant_contexts.append(context)
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context_string = ""
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for context in relevant_contexts:
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if context:
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context_string += " ".join(context["documents"][0]) + "\n"
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ra_content = rag_template(
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template=template,
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context=context_string,
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query=query,
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)
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if content_type == "list":
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new_content = []
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for content_item in user_message["content"]:
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if content_item["type"] == "text":
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# Update the text item's content with ra_content
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new_content.append({"type": "text", "text": ra_content})
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else:
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# Keep other types of content as they are
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new_content.append(content_item)
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new_user_message = {**user_message, "content": new_content}
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else:
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new_user_message = {
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**user_message,
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"content": ra_content,
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}
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messages[last_user_message_idx] = new_user_message
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return messages
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132
backend/main.py
132
backend/main.py
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@ -28,7 +28,7 @@ from typing import List
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from utils.utils import get_admin_user
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from apps.rag.utils import query_doc, query_collection, rag_template
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from apps.rag.utils import rag_messages
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from config import (
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WEBUI_NAME,
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@ -60,19 +60,6 @@ app.state.MODEL_FILTER_LIST = MODEL_FILTER_LIST
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origins = ["*"]
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app.add_middleware(
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CORSMiddleware,
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allow_origins=origins,
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allow_credentials=True,
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allow_methods=["*"],
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allow_headers=["*"],
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)
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@app.on_event("startup")
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async def on_startup():
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await litellm_app_startup()
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class RAGMiddleware(BaseHTTPMiddleware):
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async def dispatch(self, request: Request, call_next):
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@ -91,98 +78,33 @@ class RAGMiddleware(BaseHTTPMiddleware):
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# Example: Add a new key-value pair or modify existing ones
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# data["modified"] = True # Example modification
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if "docs" in data:
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docs = data["docs"]
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print(docs)
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last_user_message_idx = None
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for i in range(len(data["messages"]) - 1, -1, -1):
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if data["messages"][i]["role"] == "user":
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last_user_message_idx = i
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break
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user_message = data["messages"][last_user_message_idx]
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if isinstance(user_message["content"], list):
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# Handle list content input
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content_type = "list"
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query = ""
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for content_item in user_message["content"]:
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if content_item["type"] == "text":
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query = content_item["text"]
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break
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elif isinstance(user_message["content"], str):
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# Handle text content input
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content_type = "text"
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query = user_message["content"]
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else:
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# Fallback in case the input does not match expected types
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content_type = None
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query = ""
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relevant_contexts = []
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for doc in docs:
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context = None
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try:
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if doc["type"] == "collection":
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context = query_collection(
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collection_names=doc["collection_names"],
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query=query,
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k=rag_app.state.TOP_K,
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embedding_function=rag_app.state.sentence_transformer_ef,
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)
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else:
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context = query_doc(
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collection_name=doc["collection_name"],
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query=query,
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k=rag_app.state.TOP_K,
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embedding_function=rag_app.state.sentence_transformer_ef,
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)
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except Exception as e:
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print(e)
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context = None
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relevant_contexts.append(context)
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context_string = ""
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for context in relevant_contexts:
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if context:
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context_string += " ".join(context["documents"][0]) + "\n"
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ra_content = rag_template(
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template=rag_app.state.RAG_TEMPLATE,
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context=context_string,
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query=query,
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data = {**data}
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data["messages"] = rag_messages(
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data["docs"],
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data["messages"],
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rag_app.state.RAG_TEMPLATE,
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rag_app.state.TOP_K,
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rag_app.state.sentence_transformer_ef,
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)
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if content_type == "list":
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new_content = []
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for content_item in user_message["content"]:
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if content_item["type"] == "text":
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# Update the text item's content with ra_content
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new_content.append({"type": "text", "text": ra_content})
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else:
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# Keep other types of content as they are
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new_content.append(content_item)
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new_user_message = {**user_message, "content": new_content}
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else:
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new_user_message = {
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**user_message,
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"content": ra_content,
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}
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data["messages"][last_user_message_idx] = new_user_message
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del data["docs"]
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print(data["messages"])
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modified_body_bytes = json.dumps(data).encode("utf-8")
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# Create a new request with the modified body
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scope = request.scope
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scope["body"] = modified_body_bytes
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request = Request(scope, receive=lambda: self._receive(modified_body_bytes))
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# Replace the request body with the modified one
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request._body = modified_body_bytes
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# Set custom header to ensure content-length matches new body length
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request.headers.__dict__["_list"] = [
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(b"content-length", str(len(modified_body_bytes)).encode("utf-8")),
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*[
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(k, v)
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for k, v in request.headers.raw
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if k.lower() != b"content-length"
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],
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]
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response = await call_next(request)
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return response
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@ -194,6 +116,15 @@ class RAGMiddleware(BaseHTTPMiddleware):
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app.add_middleware(RAGMiddleware)
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app.add_middleware(
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CORSMiddleware,
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allow_origins=origins,
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allow_credentials=True,
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allow_methods=["*"],
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allow_headers=["*"],
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)
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@app.middleware("http")
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async def check_url(request: Request, call_next):
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start_time = int(time.time())
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@ -204,6 +135,11 @@ async def check_url(request: Request, call_next):
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return response
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@app.on_event("startup")
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async def on_startup():
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await litellm_app_startup()
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app.mount("/api/v1", webui_app)
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app.mount("/litellm/api", litellm_app)
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