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Configuration error
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# pylint: disable=missing-timeout
from typing import List, Dict, Any, Tuple, Optional
import os
import logging
from time import sleep
import requests
import streamlit as st
API_ENDPOINT = os.getenv("API_ENDPOINT", "http://localhost:8000")
STATUS = "initialized"
HS_VERSION = "hs_version"
DOC_REQUEST = "query"
DOC_FEEDBACK = "feedback"
DOC_UPLOAD = "file-upload"
def haystack_is_ready():
"""
Used to show the "Haystack is loading..." message
"""
url = f"{API_ENDPOINT}/{STATUS}"
try:
if requests.get(url).status_code < 400:
return True
except Exception as e:
logging.exception(e)
sleep(1) # To avoid spamming a non-existing endpoint at startup
return False
def haystack_version():
"""
Get the Haystack version from the REST API
"""
url = f"{API_ENDPOINT}/{HS_VERSION}"
return requests.get(url, timeout=0.1).json()["hs_version"]
def query(query, filters={}, top_k_reader=5, top_k_retriever=5) -> Tuple[List[Dict[str, Any]], Dict[str, str]]:
"""
Send a query to the REST API and parse the answer.
Returns both a ready-to-use representation of the results and the raw JSON.
"""
url = f"{API_ENDPOINT}/{DOC_REQUEST}"
params = {"filters": filters, "Retriever": {"top_k": top_k_retriever}, "Reader": {"top_k": top_k_reader}}
req = {"query": query, "params": params}
response_raw = requests.post(url, json=req)
if response_raw.status_code >= 400 and response_raw.status_code != 503:
raise Exception(f"{vars(response_raw)}")
response = response_raw.json()
if "errors" in response:
raise Exception(", ".join(response["errors"]))
# Format response
results = []
answers = response["answers"]
for answer in answers:
if answer.get("answer", None):
results.append(
{
"context": "..." + answer["context"] + "...",
"answer": answer.get("answer", None),
"source": answer["meta"]["name"],
"relevance": round(answer["score"] * 100, 2),
"document": [doc for doc in response["documents"] if doc["id"] in answer["document_ids"]][0],
"offset_start_in_doc": answer["offsets_in_document"][0]["start"],
"_raw": answer,
}
)
else:
results.append(
{
"context": None,
"answer": None,
"document": None,
"relevance": round(answer["score"] * 100, 2),
"_raw": answer,
}
)
return results, response
def send_feedback(query, answer_obj, is_correct_answer, is_correct_document, document) -> None:
"""
Send a feedback (label) to the REST API
"""
url = f"{API_ENDPOINT}/{DOC_FEEDBACK}"
req = {
"query": query,
"document": document,
"is_correct_answer": is_correct_answer,
"is_correct_document": is_correct_document,
"origin": "user-feedback",
"answer": answer_obj,
}
response_raw = requests.post(url, json=req)
if response_raw.status_code >= 400:
raise ValueError(f"An error was returned [code {response_raw.status_code}]: {response_raw.json()}")
def upload_doc(file):
url = f"{API_ENDPOINT}/{DOC_UPLOAD}"
files = [("files", file)]
response = requests.post(url, files=files).json()
return response
def get_backlink(result) -> Tuple[Optional[str], Optional[str]]:
if result.get("document", None):
doc = result["document"]
if isinstance(doc, dict):
if doc.get("meta", None):
if isinstance(doc["meta"], dict):
if doc["meta"].get("url", None) and doc["meta"].get("title", None):
return doc["meta"]["url"], doc["meta"]["title"]
return None, None
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