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"""FastAPI app creation, logger configuration and main API routes."""
import logging
from fastapi import Depends, FastAPI, Request
from fastapi.middleware.cors import CORSMiddleware
from injector import Injector
from llama_index.core.callbacks import CallbackManager
from llama_index.core.callbacks.global_handlers import create_global_handler
from llama_index.core.settings import Settings as LlamaIndexSettings
from private_gpt.server.chat.chat_router import chat_router
from private_gpt.server.chunks.chunks_router import chunks_router
from private_gpt.server.completions.completions_router import completions_router
from private_gpt.server.embeddings.embeddings_router import embeddings_router
from private_gpt.server.health.health_router import health_router
from private_gpt.server.ingest.ingest_router import ingest_router
from private_gpt.settings.settings import Settings
logger = logging.getLogger(__name__)
def create_app(root_injector: Injector) -> FastAPI:
# Start the API
async def bind_injector_to_request(request: Request) -> None:
request.state.injector = root_injector
app = FastAPI(dependencies=[Depends(bind_injector_to_request)])
app.include_router(completions_router)
app.include_router(chat_router)
app.include_router(chunks_router)
app.include_router(ingest_router)
app.include_router(embeddings_router)
app.include_router(health_router)
# Add LlamaIndex simple observability
global_handler = create_global_handler("simple")
LlamaIndexSettings.callback_manager = CallbackManager([global_handler])
settings = root_injector.get(Settings)
if settings.server.cors.enabled:
logger.debug("Setting up CORS middleware")
app.add_middleware(
CORSMiddleware,
allow_credentials=settings.server.cors.allow_credentials,
allow_origins=settings.server.cors.allow_origins,
allow_origin_regex=settings.server.cors.allow_origin_regex,
allow_methods=settings.server.cors.allow_methods,
allow_headers=settings.server.cors.allow_headers,
)
if settings.ui.enabled:
logger.debug("Importing the UI module")
try:
from private_gpt.ui.ui import PrivateGptUi
except ImportError as e:
raise ImportError(
"UI dependencies not found, install with `poetry install --extras ui`"
) from e
ui = root_injector.get(PrivateGptUi)
ui.mount_in_app(app, settings.ui.path)
return app
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