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// _ _
// __ _____ __ ___ ___ __ _| |_ ___
// \ \ /\ / / _ \/ _` \ \ / / |/ _` | __/ _ \
// \ V V / __/ (_| |\ V /| | (_| | || __/
// \_/\_/ \___|\__,_| \_/ |_|\__,_|\__\___|
//
// Copyright © 2016 - 2024 Weaviate B.V. All rights reserved.
//
// CONTACT: [email protected]
//
package clients
import (
"bytes"
"context"
"encoding/json"
"fmt"
"io"
"net/http"
"time"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"github.com/weaviate/weaviate/entities/additional"
"github.com/weaviate/weaviate/modules/qna-transformers/ent"
)
type qna struct {
origin string
httpClient *http.Client
logger logrus.FieldLogger
}
func New(origin string, timeout time.Duration, logger logrus.FieldLogger) *qna {
return &qna{
origin: origin,
httpClient: &http.Client{Timeout: timeout},
logger: logger,
}
}
func (q *qna) Answer(ctx context.Context,
text, question string,
) (*ent.AnswerResult, error) {
body, err := json.Marshal(answersInput{
Text: text,
Question: question,
})
if err != nil {
return nil, errors.Wrapf(err, "marshal body")
}
req, err := http.NewRequestWithContext(ctx, "POST", q.url("/answers/"),
bytes.NewReader(body))
if err != nil {
return nil, errors.Wrap(err, "create POST request")
}
res, err := q.httpClient.Do(req)
if err != nil {
return nil, errors.Wrap(err, "send POST request")
}
defer res.Body.Close()
bodyBytes, err := io.ReadAll(res.Body)
if err != nil {
return nil, errors.Wrap(err, "read response body")
}
var resBody answersResponse
if err := json.Unmarshal(bodyBytes, &resBody); err != nil {
return nil, errors.Wrap(err, "unmarshal response body")
}
if res.StatusCode > 399 {
return nil, errors.Errorf("fail with status %d: %s", res.StatusCode,
resBody.Error)
}
return &ent.AnswerResult{
Text: resBody.Text,
Question: resBody.Question,
Answer: resBody.Answer,
Certainty: resBody.Certainty,
Distance: additional.CertaintyToDistPtr(resBody.Certainty),
}, nil
}
func (q *qna) url(path string) string {
return fmt.Sprintf("%s%s", q.origin, path)
}
type answersInput struct {
Text string `json:"text"`
Question string `json:"question"`
}
type answersResponse struct {
answersInput `json:"answersInput"`
Answer *string `json:"answer"`
Certainty *float64 `json:"certainty"`
Distance *float64 `json:"distance"`
Error string `json:"error"`
}
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