116 lines
3.2 KiB
Go
116 lines
3.2 KiB
Go
/*
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* Copyright 2025 coze-dev Authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* 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 ark
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import (
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"context"
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"errors"
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"fmt"
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"math"
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"net/http"
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"github.com/cloudwego/eino-ext/components/embedding/ark"
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"github.com/cloudwego/eino/components/embedding"
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"github.com/volcengine/volcengine-go-sdk/service/arkruntime/model"
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contract "github.com/coze-dev/coze-studio/backend/infra/contract/embedding"
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"github.com/coze-dev/coze-studio/backend/pkg/errorx"
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"github.com/coze-dev/coze-studio/backend/pkg/lang/slices"
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"github.com/coze-dev/coze-studio/backend/types/errno"
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)
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func NewArkEmbedder(ctx context.Context, config *ark.EmbeddingConfig, dimensions int64) (contract.Embedder, error) {
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emb, err := ark.NewEmbedder(ctx, config)
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if err != nil {
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return nil, err
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}
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return &embWrap{dims: dimensions, Embedder: emb}, nil
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}
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type embWrap struct {
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dims int64
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embedding.Embedder
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}
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func (d embWrap) EmbedStrings(ctx context.Context, texts []string, opts ...embedding.Option) ([][]float64, error) {
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resp := make([][]float64, 0, len(texts))
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for _, part := range slices.Chunks(texts, 100) {
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partResult, err := d.Embedder.EmbedStrings(ctx, part, opts...)
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if err != nil {
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return nil, err
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}
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normed, err := d.slicedNormL2(partResult)
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if err != nil {
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var (
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apiErr = &model.APIError{}
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reqErr = &model.RequestError{}
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)
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if errors.As(err, &apiErr) {
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if apiErr.HTTPStatusCode >= http.StatusInternalServerError ||
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apiErr.HTTPStatusCode == http.StatusTooManyRequests {
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return nil, err
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}
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} else if errors.As(err, &reqErr) {
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if reqErr.HTTPStatusCode >= http.StatusInternalServerError {
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return nil, err
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}
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}
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return nil, errorx.WrapByCode(err, errno.ErrKnowledgeNonRetryableCode)
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}
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resp = append(resp, normed...)
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}
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return resp, nil
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}
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func (d embWrap) EmbedStringsHybrid(ctx context.Context, texts []string, opts ...embedding.Option) ([][]float64, []map[int]float64, error) {
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return nil, nil, fmt.Errorf("[arkEmbedder] EmbedStringsHybrid not support")
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}
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func (d embWrap) Dimensions() int64 {
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return d.dims
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}
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func (d embWrap) SupportStatus() contract.SupportStatus {
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return contract.SupportDense
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}
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func (d embWrap) slicedNormL2(vectors [][]float64) ([][]float64, error) {
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if len(vectors) == 0 {
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return vectors, nil
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}
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if curDims := len(vectors[0]); curDims < int(d.dims) {
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return nil, fmt.Errorf("[slicedNormL2] got dims=%d less than %d", curDims, d.dims)
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}
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result := make([][]float64, len(vectors))
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for i, vec := range vectors {
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sliced := vec[:d.dims]
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sumSq := 0.0
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for _, v := range sliced {
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sumSq += v * v
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}
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norm := math.Sqrt(sumSq)
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r := make([]float64, len(sliced))
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for j, v := range sliced {
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r[j] = v / norm
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}
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result[i] = r
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}
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return result, nil
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}
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