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f3d7e47227
https://github.com/milvus-io/milvus/issues/35856 Signed-off-by: junjiejiangjjj <junjie.jiang@zilliz.com>
99 lines
3.0 KiB
Go
99 lines
3.0 KiB
Go
/*
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* # Licensed to the LF AI & Data foundation under one
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* # or more contributor license agreements. See the NOTICE file
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* # distributed with this work for additional information
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* # regarding copyright ownership. The ASF licenses this file
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* # to you under the Apache License, Version 2.0 (the
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* # "License"); you may not use this file except in compliance
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* # with the License. You may obtain a copy of the License at
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* #
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* # http://www.apache.org/licenses/LICENSE-2.0
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* #
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* # Unless required by applicable law or agreed to in writing, software
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* # distributed under the License is distributed on an "AS IS" BASIS,
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* # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* # See the License for the specific language governing permissions and
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* # limitations under the License.
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*/
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package rerank
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import (
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"context"
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"fmt"
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"strconv"
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"strings"
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"github.com/milvus-io/milvus-proto/go-api/v2/commonpb"
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"github.com/milvus-io/milvus/internal/util/credentials"
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"github.com/milvus-io/milvus/internal/util/function/models"
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"github.com/milvus-io/milvus/internal/util/function/models/cohere"
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)
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type cohereProvider struct {
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baseProvider
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cohereClient *cohere.CohereClient
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url string
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modelName string
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params map[string]any
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}
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func newCohereProvider(params []*commonpb.KeyValuePair, conf map[string]string, credentials *credentials.Credentials) (modelProvider, error) {
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apiKey, url, err := models.ParseAKAndURL(credentials, params, conf, models.CohereAIAKEnvStr)
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if err != nil {
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return nil, err
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}
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if url == "" {
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url = "https://api.cohere.com/v2/rerank"
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}
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cohereClient, err := cohere.NewCohereClient(apiKey)
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if err != nil {
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return nil, err
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}
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var modelName string
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modelParams := map[string]any{}
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maxBatch := 128
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for _, param := range params {
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switch strings.ToLower(param.Key) {
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case models.ModelNameParamKey:
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modelName = param.Value
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case models.MaxClientBatchSizeParamKey:
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if maxBatch, err = parseMaxBatch(param.Value); err != nil {
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return nil, err
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}
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case models.MaxTKsPerDocParamKey:
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maxTokensPerDoc, err := strconv.Atoi(param.Value)
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if err != nil {
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return nil, fmt.Errorf("[%s param's value: %s] is not a valid number", models.MaxTKsPerDocParamKey, param.Value)
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} else {
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modelParams[models.MaxTKsPerDocParamKey] = maxTokensPerDoc
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}
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default:
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}
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}
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if modelName == "" {
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return nil, fmt.Errorf("cohere rerank model name is required")
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}
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provider := cohereProvider{
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baseProvider: baseProvider{batchSize: maxBatch},
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cohereClient: cohereClient,
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url: url,
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modelName: modelName,
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params: nil,
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}
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return &provider, nil
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}
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func (provider *cohereProvider) rerank(ctx context.Context, query string, docs []string) ([]float32, error) {
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rerankResp, err := provider.cohereClient.Rerank(provider.url, provider.modelName, query, docs, nil, 30)
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if err != nil {
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return nil, err
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}
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scores := make([]float32, len(docs))
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for i, result := range rerankResp.Results {
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scores[i] = result.RelevanceScore
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}
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return scores, nil
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}
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