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| 1 | +/* |
| 2 | + * Copyright 2023 Dgraph Labs, Inc. and Contributors |
| 3 | + * |
| 4 | + * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | + * you may not use this file except in compliance with the License. |
| 6 | + * You may obtain a copy of the License at |
| 7 | + * |
| 8 | + * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | + * |
| 10 | + * Unless required by applicable law or agreed to in writing, software |
| 11 | + * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | + * See the License for the specific language governing permissions and |
| 14 | + * limitations under the License. |
| 15 | + */ |
| 16 | + |
| 17 | +package dgraphtest |
| 18 | + |
| 19 | +import ( |
| 20 | + "encoding/json" |
| 21 | + "fmt" |
| 22 | + "math/rand" |
| 23 | + "strings" |
| 24 | + |
| 25 | + "github.com/dgraph-io/dgo/v230/protos/api" |
| 26 | +) |
| 27 | + |
| 28 | +func GenerateRandomVector(size int) []float32 { |
| 29 | + vector := make([]float32, size) |
| 30 | + for i := 0; i < size; i++ { |
| 31 | + vector[i] = rand.Float32() * 10 |
| 32 | + } |
| 33 | + return vector |
| 34 | +} |
| 35 | + |
| 36 | +func formatVector(label string, vector []float32, index int) string { |
| 37 | + vectorString := fmt.Sprintf(`"[%s]"`, strings.Trim(strings.Join(strings.Fields(fmt.Sprint(vector)), ", "), "[]")) |
| 38 | + return fmt.Sprintf("<0x%x> <%s> %s . \n", index+10, label, vectorString) |
| 39 | +} |
| 40 | + |
| 41 | +func GenerateRandomVectors(lowerLimit, uppermLimit, vectorSize int, label string) (string, [][]float32) { |
| 42 | + var builder strings.Builder |
| 43 | + var vectors [][]float32 |
| 44 | + // builder.WriteString("`") |
| 45 | + for i := lowerLimit; i < uppermLimit; i++ { |
| 46 | + randomVector := GenerateRandomVector(vectorSize) |
| 47 | + vectors = append(vectors, randomVector) |
| 48 | + formattedVector := formatVector(label, randomVector, i) |
| 49 | + builder.WriteString(formattedVector) |
| 50 | + } |
| 51 | + |
| 52 | + return builder.String(), vectors |
| 53 | +} |
| 54 | + |
| 55 | +func (gc *GrpcClient) QueryMultipleVectorsUsingSimilarTo(vector []float32, pred string, topK int) ([][]float32, error) { |
| 56 | + vectorQuery := fmt.Sprintf(` |
| 57 | + { |
| 58 | + vector(func: similar_to(%v, %v, "%v")) { |
| 59 | + uid |
| 60 | + %v |
| 61 | + } |
| 62 | + }`, pred, topK, vector, pred) |
| 63 | + resp, err := gc.Query(vectorQuery) |
| 64 | + |
| 65 | + if err != nil { |
| 66 | + return [][]float32{}, err |
| 67 | + } |
| 68 | + |
| 69 | + return UnmarshalVectorResp(resp) |
| 70 | +} |
| 71 | + |
| 72 | +func (gc *GrpcClient) QuerySingleVectorsUsingUid(uid, pred string) ([][]float32, error) { |
| 73 | + vectorQuery := fmt.Sprintf(` |
| 74 | + { |
| 75 | + vector(func: uid(%v)) { |
| 76 | + uid |
| 77 | + %v |
| 78 | + } |
| 79 | + }`, uid[1:len(uid)-1], pred) |
| 80 | + |
| 81 | + resp, err := gc.Query(vectorQuery) |
| 82 | + if err != nil { |
| 83 | + return [][]float32{}, err |
| 84 | + } |
| 85 | + |
| 86 | + return UnmarshalVectorResp(resp) |
| 87 | +} |
| 88 | + |
| 89 | +func UnmarshalVectorResp(resp *api.Response) ([][]float32, error) { |
| 90 | + type Data struct { |
| 91 | + Vector []struct { |
| 92 | + UID string `json:"uid"` |
| 93 | + ProjectDescriptionV []float32 `json:"project_discription_v"` |
| 94 | + } `json:"vector"` |
| 95 | + } |
| 96 | + var data Data |
| 97 | + if err := json.Unmarshal([]byte(resp.Json), &data); err != nil { |
| 98 | + return nil, err |
| 99 | + } |
| 100 | + |
| 101 | + var vectors [][]float32 |
| 102 | + for _, item := range data.Vector { |
| 103 | + vectors = append(vectors, item.ProjectDescriptionV) |
| 104 | + } |
| 105 | + return vectors, nil |
| 106 | +} |
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