casibase/embedding/ernie.go

// Copyright 2023 The casbin Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package embedding

import (
	"context"

	ernie "github.com/anhao/go-ernie"
)

type ErnieEmbeddingProvider struct {
	subType   string
	apiKey    string
	secretKey string
}

func NewErnieEmbeddingProvider(subType string, apiKey string, secretKey string) (*ErnieEmbeddingProvider, error) {
	return &ErnieEmbeddingProvider{subType: subType, apiKey: apiKey, secretKey: secretKey}, nil
}

func (e *ErnieEmbeddingProvider) QueryVector(text string, ctx context.Context) ([]float32, error) {
	client := ernie.NewDefaultClient(e.apiKey, e.secretKey)
	request := ernie.EmbeddingRequest{Input: []string{text}}
	embeddings, err := client.CreateEmbeddings(ctx, request)
	if err != nil {
		return nil, err
	}

	return float64ToFloat32(embeddings.Data[0].Embedding), nil
}