mirror of
https://gitee.com/milvus-io/milvus.git
synced 2025-12-06 17:18:35 +08:00
d8efe8a6fb
issue: #44363 --------- Signed-off-by: PjJinchen <6268414+pj1987111@users.noreply.github.com>
87 lines
2.7 KiB
Go
87 lines
2.7 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"
|
|
"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/ali"
|
|
)
|
|
|
|
type aliProvider struct {
|
|
baseProvider
|
|
client *ali.AliDashScopeRerank
|
|
url string
|
|
modelName string
|
|
params map[string]any
|
|
}
|
|
|
|
func newAliProvider(params []*commonpb.KeyValuePair, conf map[string]string, credentials *credentials.Credentials) (modelProvider, error) {
|
|
apiKey, url, err := models.ParseAKAndURL(credentials, params, conf, models.DashscopeAKEnvStr)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if url == "" {
|
|
url = "https://dashscope.aliyuncs.com/api/v1/services/rerank/text-rerank/text-rerank"
|
|
}
|
|
client := ali.NewAliDashScopeRerank(apiKey)
|
|
var modelName string
|
|
truncateParams := map[string]any{}
|
|
maxBatch := 128
|
|
for _, param := range params {
|
|
switch strings.ToLower(param.Key) {
|
|
case models.ModelNameParamKey:
|
|
modelName = param.Value
|
|
case models.MaxClientBatchSizeParamKey:
|
|
if maxBatch, err = parseMaxBatch(param.Value); err != nil {
|
|
return nil, err
|
|
}
|
|
default:
|
|
}
|
|
}
|
|
if modelName == "" {
|
|
return nil, fmt.Errorf("ali rerank model name is required")
|
|
}
|
|
provider := aliProvider{
|
|
baseProvider: baseProvider{batchSize: maxBatch},
|
|
client: client,
|
|
url: url,
|
|
modelName: modelName,
|
|
params: truncateParams,
|
|
}
|
|
return &provider, nil
|
|
}
|
|
|
|
func (provider *aliProvider) rerank(ctx context.Context, query string, docs []string) ([]float32, error) {
|
|
rerankResp, err := provider.client.Rerank(provider.url, provider.modelName, query, docs, provider.params, 30)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
scores := make([]float32, len(docs))
|
|
for i, rerankResult := range rerankResp.Output.Results {
|
|
scores[i] = rerankResult.RelevanceScore
|
|
}
|
|
return scores, nil
|
|
}
|