github.com/weaviate/weaviate@v1.24.6/usecases/modulecomponents/arguments/nearImage/searcher.go (about)

     1  //                           _       _
     2  // __      _____  __ ___   ___  __ _| |_ ___
     3  // \ \ /\ / / _ \/ _` \ \ / / |/ _` | __/ _ \
     4  //  \ V  V /  __/ (_| |\ V /| | (_| | ||  __/
     5  //   \_/\_/ \___|\__,_| \_/ |_|\__,_|\__\___|
     6  //
     7  //  Copyright © 2016 - 2024 Weaviate B.V. All rights reserved.
     8  //
     9  //  CONTACT: hello@weaviate.io
    10  //
    11  
    12  package nearImage
    13  
    14  import (
    15  	"context"
    16  	"fmt"
    17  	"time"
    18  
    19  	"github.com/pkg/errors"
    20  	"github.com/weaviate/weaviate/entities/modulecapabilities"
    21  	"github.com/weaviate/weaviate/entities/moduletools"
    22  )
    23  
    24  type Searcher struct {
    25  	vectorizer imgVectorizer
    26  }
    27  
    28  func NewSearcher(vectorizer imgVectorizer) *Searcher {
    29  	return &Searcher{vectorizer}
    30  }
    31  
    32  type imgVectorizer interface {
    33  	VectorizeImage(ctx context.Context,
    34  		id, image string, cfg moduletools.ClassConfig) ([]float32, error)
    35  }
    36  
    37  func (s *Searcher) VectorSearches() map[string]modulecapabilities.VectorForParams {
    38  	vectorSearches := map[string]modulecapabilities.VectorForParams{}
    39  	vectorSearches["nearImage"] = s.vectorForNearImageParam
    40  	return vectorSearches
    41  }
    42  
    43  func (s *Searcher) vectorForNearImageParam(ctx context.Context, params interface{},
    44  	className string,
    45  	findVectorFn modulecapabilities.FindVectorFn,
    46  	cfg moduletools.ClassConfig,
    47  ) ([]float32, error) {
    48  	return s.vectorFromNearImageParam(ctx, params.(*NearImageParams), className, findVectorFn, cfg)
    49  }
    50  
    51  func (s *Searcher) vectorFromNearImageParam(ctx context.Context,
    52  	params *NearImageParams, className string, findVectorFn modulecapabilities.FindVectorFn,
    53  	cfg moduletools.ClassConfig,
    54  ) ([]float32, error) {
    55  	// find vector for given search query
    56  	searchID := fmt.Sprintf("search_%v", time.Now().UnixNano())
    57  	vector, err := s.vectorizer.VectorizeImage(ctx, searchID, params.Image, cfg)
    58  	if err != nil {
    59  		return nil, errors.Errorf("vectorize image: %v", err)
    60  	}
    61  
    62  	return vector, nil
    63  }