mirror of
https://github.com/deepset-ai/haystack.git
synced 2025-07-25 09:50:14 +00:00
935689e630
* Add more env vars to the streamlit ui * Add some more questions to the random ones * Relax a statuscode check and rename env vars * Make query error message more descriptive * Add log message * Align docker-compose with and without GPU * Typo in pipeline filename * Remove prefix from var in docker_compose * Align docker-compose.yml and add small sleep to the initialized poller to prevent spamming * Fix the name of the dockerfile used to build the GPU image
102 lines
3.5 KiB
Python
102 lines
3.5 KiB
Python
import logging
|
|
import time
|
|
from pathlib import Path
|
|
|
|
from fastapi import APIRouter
|
|
|
|
import haystack
|
|
from haystack.pipelines.base import Pipeline
|
|
from rest_api.config import PIPELINE_YAML_PATH, QUERY_PIPELINE_NAME
|
|
from rest_api.config import LOG_LEVEL, CONCURRENT_REQUEST_PER_WORKER
|
|
from rest_api.schema import QueryRequest, QueryResponse
|
|
from rest_api.controller.utils import RequestLimiter
|
|
|
|
|
|
logging.getLogger("haystack").setLevel(LOG_LEVEL)
|
|
logger = logging.getLogger("haystack")
|
|
|
|
from pydantic import BaseConfig
|
|
|
|
BaseConfig.arbitrary_types_allowed = True
|
|
|
|
router = APIRouter()
|
|
|
|
|
|
PIPELINE = Pipeline.load_from_yaml(Path(PIPELINE_YAML_PATH), pipeline_name=QUERY_PIPELINE_NAME)
|
|
# TODO make this generic for other pipelines with different naming
|
|
RETRIEVER = PIPELINE.get_node(name="Retriever")
|
|
DOCUMENT_STORE = RETRIEVER.document_store if RETRIEVER else None
|
|
logging.info(f"Loaded pipeline nodes: {PIPELINE.graph.nodes.keys()}")
|
|
|
|
concurrency_limiter = RequestLimiter(CONCURRENT_REQUEST_PER_WORKER)
|
|
logging.info("Concurrent requests per worker: {CONCURRENT_REQUEST_PER_WORKER}")
|
|
|
|
|
|
@router.get("/initialized")
|
|
def check_status():
|
|
"""
|
|
This endpoint can be used during startup to understand if the
|
|
server is ready to take any requests, or is still loading.
|
|
|
|
The recommended approach is to call this endpoint with a short timeout,
|
|
like 500ms, and in case of no reply, consider the server busy.
|
|
"""
|
|
return True
|
|
|
|
|
|
@router.get("/hs_version")
|
|
def haystack_version():
|
|
return {"hs_version": haystack.__version__}
|
|
|
|
|
|
@router.post("/query", response_model=QueryResponse, response_model_exclude_none=True)
|
|
def query(request: QueryRequest):
|
|
with concurrency_limiter.run():
|
|
result = _process_request(PIPELINE, request)
|
|
return result
|
|
|
|
|
|
def _process_request(pipeline, request) -> QueryResponse:
|
|
start_time = time.time()
|
|
|
|
params = request.params or {}
|
|
|
|
# format global, top-level filters (e.g. "params": {"filters": {"name": ["some"]}})
|
|
if "filters" in params.keys():
|
|
params["filters"] = _format_filters(params["filters"])
|
|
|
|
# format targeted node filters (e.g. "params": {"Retriever": {"filters": {"value"}}})
|
|
for key, value in params.items():
|
|
if "filters" in params[key].keys():
|
|
params[key]["filters"] = _format_filters(params[key]["filters"])
|
|
|
|
result = pipeline.run(query=request.query, params=params,debug=request.debug)
|
|
end_time = time.time()
|
|
logger.info({"request": request.dict(), "response": result, "time": f"{(end_time - start_time):.2f}"})
|
|
|
|
return result
|
|
|
|
|
|
def _format_filters(filters):
|
|
"""
|
|
Adjust filters to compliant format:
|
|
Put filter values into a list and remove filters with null value.
|
|
"""
|
|
new_filters = {}
|
|
if filters is None:
|
|
logger.warning(f"Request with deprecated filter format ('\"filters\": null'). "
|
|
f"Remove empty filters from params to be compliant with future versions")
|
|
else:
|
|
for key, values in filters.items():
|
|
if values is None:
|
|
logger.warning(f"Request with deprecated filter format ('{key}: null'). "
|
|
f"Remove null values from filters to be compliant with future versions")
|
|
continue
|
|
elif not isinstance(values, list):
|
|
logger.warning(f"Request with deprecated filter format ('{key}': {values}). "
|
|
f"Change to '{key}':[{values}]' to be compliant with future versions")
|
|
values = [values]
|
|
|
|
new_filters[key] = values
|
|
return new_filters
|