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warp_pipe.py
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warp_pipe.py
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import json
import asyncio
import time
import uvicorn
from fastapi import FastAPI, HTTPException, Request, Depends
from fastapi.responses import StreamingResponse
from fastapi.middleware.cors import CORSMiddleware
import config_manager
config_manager.init_config()
import request_manager
import adapter_ollama
import adapter_groq
import adapter_openai
import adapter_mistral
import adapter_anthropic
import adapter_together
import adapter_lmstudio
ROUTE_DB = {
"OLLAMA": adapter_ollama.process_request,
"GROQ": adapter_groq.process_request,
"OPENAI": adapter_openai.process_request,
"MISTRAL": adapter_mistral.process_request,
"ANTHROPIC":adapter_anthropic.process_request,
"TOGETHER": adapter_together.process_request,
"LMSTUDIO": adapter_lmstudio.process_request
}
def get_adapter_route(provider):
return ROUTE_DB.get(provider, None)
app = FastAPI()
# Set up CORS middleware
app.add_middleware(
CORSMiddleware,
allow_origins=config_manager.APP_CONFIG["allowed_origins"],
allow_credentials=True,
allow_methods=["*"], # Or specify methods e.g., ["GET", "POST"]
allow_headers=["*"], # Or specify headers
)
def split_string_by_length(text, end):
return [text[i:i+end] for i in range(0,len(text),end)]
# OpenAI has a very specific chunk setup it needs and various apis evaluate it differently
# so it has to match EXACTLY... let's do that globally.
def generate_response_chunks(response_data):
response_chunks = []
chat_id = response_data['id']
created_time = int(time.time())
selected_model = response_data['model']
system_fingerprint = "warp-pipe-001"
# TODO - Actually chunk this out so it streams all pretty.
response_message = response_data['choices'][0]['message']
response_content = response_message['content']
# First chunk has no content
first_response_message = response_message
first_response_message['content'] = ""
i_chunk = {
'id':chat_id,
'object':'chat.completion.chunk',
'created':created_time,
'model':selected_model,
'system_fingerprint':system_fingerprint,
'choices':[{
"index":0,
"delta":first_response_message,
"logprobs":None,
"finish_reason":None
}]}
response_chunks.append(json.dumps(i_chunk))
if response_content and len(response_content) > 1:
c_content = split_string_by_length(response_content,4096)
for cc in c_content:
c_chunk = {
'id':chat_id,
'object':'chat.completion.chunk',
'created':created_time,
'model':selected_model,
'system_fingerprint':system_fingerprint,
'choices':[{
"index":0,
"delta":{"content":cc},
"logprobs":None,
"finish_reason":None
}
]
}
response_chunks.append(json.dumps(c_chunk))
# Yup - it does this.
final_chunk = {"id":chat_id,"object":"chat.completion.chunk","created":created_time,"model":selected_model,"system_fingerprint":system_fingerprint,"choices":[{"index":0,"delta":{},"logprobs":None,"finish_reason":"stop"}]}
response_chunks.append(json.dumps(final_chunk))
# It also does this.
response_chunks.append("[DONE]")
return response_chunks
async def stream_response_data(response_data):
response_chunks = generate_response_chunks(response_data)
print("Response Chunks")
for rc in response_chunks:
print(f"data: {rc}\n\n")
for chunk in response_chunks:
yield f"data: {chunk}\n\n"
#await asyncio.sleep(0.1)
# Dependency for API key authorization
async def verify_api_key(request: Request):
global ERROR_AUTH_RESPONSE
global API_KEYS
if config_manager.APP_CONFIG["auth_enforcement_enabled"]:
authorization: str = request.headers.get("Authorization")
if not authorization:
raise HTTPException(status_code=401, detail=request_manager.ERROR_AUTH_RESPONSE)
token_type, _, api_key = authorization.partition(' ')
if token_type.lower() != "bearer" or api_key not in API_KEYS:
raise HTTPException(status_code=401, detail=request_manager.ERROR_AUTH_RESPONSE)
async def get_header_info(request_headers):
header_info = {
"llm_provider": request_headers.get("LLM_PROVIDER", config_manager.APP_CONFIG["default_provider"]).upper(),
}
# Provider Auth Passthrough
provider_auth = request_headers.get("PROVIDER_AUTH","")
if provider_auth == "":
provider_auth = request_headers.get("Authorization", None)
auth_skip_list = ["Bearer", "Bearer ", "Bearer sk-xxx"]
if provider_auth in auth_skip_list:
provider_auth = ""
else:
provider_auth = provider_auth.replace("Bearer ","")
if provider_auth != "":
header_info["provider_auth"] = provider_auth
if "MAX_CONTEXT" in request_headers:
header_info["max_context"] = request_headers["MAX_CONTEXT"]
return header_info
@app.post("/v1/chat/completions")
async def handle_completions(request: Request,_=Depends(verify_api_key)):
header_info = await get_header_info(request.headers)
process_request = get_adapter_route(header_info['llm_provider'])
if process_request is None:
raise HTTPException(status_code=400, detail=request_manager.ERROR_PROVIDER_RESPONSE)
try:
request_body = await request.json()
except:
raise HTTPException(status_code=400, detail=request_manager.ERROR_BAD_REQUEST)
stream_response = request_body.get("stream", False)
# Assuming non-streaming fetch from the provider
response = await process_request(request.url.path, header_info, request_body)
if response.success is False:
raise HTTPException(status_code=response.status_code, detail=response.body)
if stream_response:
# Create a StreamingResponse from an async generator
return StreamingResponse(stream_response_data(response.body),media_type='text/event-stream')
else:
# If not streaming, return the response normally
return response.body
# -- EMBEDDINGS ROUTING ---
@app.post("/v1/embeddings")
async def get_embeddings(request: Request,_=Depends(verify_api_key)):
header_info = await get_header_info(request.headers)
process_request = get_adapter_route(header_info['llm_provider'])
if process_request is None:
raise HTTPException(status_code=400, detail=request_manager.ERROR_PROVIDER_RESPONSE)
try:
request_body = await request.json()
except:
raise HTTPException(status_code=400, detail=request_manager.ERROR_BAD_REQUEST)
response = await process_request(request.url.path, header_info, request_body)
if response.success is False:
raise HTTPException(status_code=response.status_code, detail=response.body)
return response.body
# --- MODELS ROUTING ---
# List all available models.
@app.get("/v1/models")
async def get_models(request: Request, _=Depends(verify_api_key)):
header_info = await get_header_info(request.headers)
process_request = get_adapter_route(header_info['llm_provider'])
if process_request is None:
raise HTTPException(status_code=400, detail=request_manager.ERROR_PROVIDER_RESPONSE)
response = await process_request(request.url.path, header_info, None)
if response.success is False:
raise HTTPException(status_code=response.status_code, detail=response.body)
return response.body
# Get information about a specific model.
@app.get("/v1/models/{model_id}")
async def get_model(request: Request, model_id: str, _=Depends(verify_api_key)):
header_info = await get_header_info(request.headers)
process_request = get_adapter_route(header_info['llm_provider'])
if process_request is None:
raise HTTPException(status_code=400, detail=request_manager.ERROR_PROVIDER_RESPONSE)
response = await process_request(request.url.path, header_info, None)
if response.success is False:
raise HTTPException(status_code=response.status_code, detail=response.body)
return response.body
if __name__ == "__main__":
uvicorn.run(app, host=config_manager.APP_CONFIG['host'], port=config_manager.APP_CONFIG['port'])