milvus/internal/util/function/rerank/tei_rerank_provider.go
junjiejiangjjj f1ce84996d
enhance: refactor model service configuration and environment variables (#44036)
- Add enable configuration for all model service providers
- Migrate environment variables from MILVUSAI_* to MILVUS_* prefix with
backward compatibility
- Unify model service enable/disable logic using configuration
- Add tests for environment variable parsing with fallback support

#35856

Signed-off-by: junjie.jiang <junjie.jiang@zilliz.com>
2025-08-26 10:49:52 +08:00

98 lines
3.1 KiB
Go

/*
* # Licensed to the LF AI & Data foundation under one
* # or more contributor license agreements. See the NOTICE file
* # distributed with this work for additional information
* # regarding copyright ownership. The ASF licenses this file
* # to you under the Apache License, Version 2.0 (the
* # "License"); you may not use this file except in compliance
* # with the License. You may obtain a copy of the License at
* #
* # http://www.apache.org/licenses/LICENSE-2.0
* #
* # Unless required by applicable law or agreed to in writing, software
* # distributed under the License is distributed on an "AS IS" BASIS,
* # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* # See the License for the specific language governing permissions and
* # limitations under the License.
*/
package rerank
import (
"context"
"fmt"
"strconv"
"strings"
"github.com/milvus-io/milvus-proto/go-api/v2/commonpb"
"github.com/milvus-io/milvus/internal/util/credentials"
"github.com/milvus-io/milvus/internal/util/function/models"
"github.com/milvus-io/milvus/internal/util/function/models/tei"
)
type teiProvider struct {
baseProvider
client *tei.TEIClient
params map[string]any
}
func newTeiProvider(params []*commonpb.KeyValuePair, conf map[string]string, credentials *credentials.Credentials) (modelProvider, error) {
apiKey, _, err := models.ParseAKAndURL(credentials, params, conf, "")
if err != nil {
return nil, err
}
var endpoint string
// TEI default client batch size
maxBatch := 32
truncateParams := map[string]any{}
for _, param := range params {
switch strings.ToLower(param.Key) {
case models.EndpointParamKey:
endpoint = param.Value
case models.MaxClientBatchSizeParamKey:
if maxBatch, err = parseMaxBatch(param.Value); err != nil {
return nil, err
}
case models.TruncateParamKey:
if teiTrun, err := strconv.ParseBool(param.Value); err != nil {
return nil, fmt.Errorf("Rerank params error, %s: %s is not bool type", models.TruncateParamKey, param.Value)
} else {
truncateParams[models.TruncateParamKey] = teiTrun
}
case models.TruncationDirectionParamKey:
if truncationDirection := param.Value; truncationDirection != "Left" && truncationDirection != "Right" {
return nil, fmt.Errorf("[%s param's value: %s] is not invalid, only supports [Left/Right]", models.TruncationDirectionParamKey, param.Value)
} else {
truncateParams[models.TruncationDirectionParamKey] = truncationDirection
}
default:
}
}
client, err := tei.NewTEIClient(apiKey, endpoint)
if err != nil {
return nil, err
}
provider := teiProvider{
baseProvider: baseProvider{batchSize: maxBatch},
client: client,
params: truncateParams,
}
return &provider, nil
}
func (provider *teiProvider) rerank(ctx context.Context, query string, docs []string) ([]float32, error) {
rerankResp, err := provider.client.Rerank(query, docs, provider.params, 30)
if err != nil {
return nil, err
}
scores := make([]float32, len(docs))
for i, result := range *rerankResp {
scores[i] = result.Score
}
return scores, nil
}