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101 lines
3.3 KiB
Go
101 lines
3.3 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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"strings"
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"github.com/milvus-io/milvus-proto/go-api/v3/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/huggingface"
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"github.com/milvus-io/milvus/pkg/v3/util/merr"
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)
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type huggingFaceProvider struct {
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baseProvider
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client *huggingface.Client
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modelName string
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hfProvider string
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timeoutMs int64
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}
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func newHuggingFaceProvider(params []*commonpb.KeyValuePair, conf map[string]string, credentials *credentials.Credentials, extraInfo *models.ModelExtraInfo) (ModelProvider, error) {
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apiKey, url, err := models.ParseAKAndURL(credentials, params, conf, models.HuggingFaceAKEnvStr, extraInfo)
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if err != nil {
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return nil, err
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}
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client, err := huggingface.NewClient(apiKey, url)
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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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hfProvider := huggingface.DefaultHFProvider
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maxBatch := 32
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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.HuggingFaceProviderParamKey:
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hfProvider = 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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default:
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}
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}
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if modelName == "" {
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return nil, merr.WrapErrParameterMissingMsg("huggingface rerank model name is required")
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}
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if hfProvider == "" {
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return nil, merr.WrapErrParameterInvalidMsg("huggingface rerank hf_provider cannot be empty")
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}
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provider := huggingFaceProvider{
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baseProvider: baseProvider{batchSize: maxBatch},
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client: client,
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modelName: modelName,
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hfProvider: hfProvider,
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timeoutMs: models.ResolveTimeoutMs(params),
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}
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return &provider, nil
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}
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func (provider *huggingFaceProvider) Rerank(_ context.Context, query string, docs []string) ([]float32, error) {
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scores := make([]float32, 0, len(docs))
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for i := 0; i < len(docs); i += provider.batchSize {
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end := i + provider.batchSize
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if end > len(docs) {
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end = len(docs)
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}
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resp, err := provider.client.SentenceSimilarity(provider.hfProvider, provider.modelName, query, docs[i:end], provider.timeoutMs)
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if err != nil {
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return nil, err
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}
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if len(*resp) != end-i {
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return nil, merr.WrapErrFunctionFailedMsg("get rerank scores failed, the number of docs and scores does not match docs:[%d], scores:[%d]", end-i, len(*resp))
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}
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scores = append(scores, (*resp)...)
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}
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return scores, nil
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}
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