You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
127 lines
3.5 KiB
Go
127 lines
3.5 KiB
Go
/*
|
|
* Copyright 2024 CloudWeGo Authors
|
|
*
|
|
* 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 main
|
|
|
|
import (
|
|
"context"
|
|
"os"
|
|
"strings"
|
|
|
|
"github.com/cloudwego/eino-ext/components/model/openai"
|
|
"github.com/cloudwego/eino-ext/components/retriever/volc_vikingdb"
|
|
"github.com/cloudwego/eino/components/model"
|
|
"github.com/cloudwego/eino/components/retriever"
|
|
"github.com/cloudwego/eino/flow/retriever/multiquery"
|
|
|
|
"github.com/cloudwego/eino-examples/internal/logs"
|
|
)
|
|
|
|
func main() {
|
|
|
|
openAIAPIKey := os.Getenv("OPENAI_API_KEY")
|
|
openAIBaseURL := os.Getenv("OPENAI_BASE_URL")
|
|
openAIModelName := os.Getenv("OPENAI_MODEL_NAME")
|
|
|
|
vikingDBHost := os.Getenv("VIKING_DB_HOST")
|
|
vikingDBRegion := os.Getenv("VIKING_DB_REGION")
|
|
vikingDBAK := os.Getenv("VIKING_DB_AK")
|
|
vikingDBSK := os.Getenv("VIKING_DB_SK")
|
|
|
|
ctx := context.Background()
|
|
vk, err := newVikingDBRetriever(ctx, vikingDBHost, vikingDBRegion, vikingDBAK, vikingDBSK)
|
|
if err != nil {
|
|
logs.Errorf("newVikingDBRetriever failed, err=%v", err)
|
|
return
|
|
}
|
|
|
|
llm, err := newChatModel(ctx, openAIBaseURL, openAIAPIKey, openAIModelName)
|
|
if err != nil {
|
|
logs.Errorf("newChatModel failed, err=%v", err)
|
|
return
|
|
}
|
|
|
|
// rewrite query by llm
|
|
mqr, err := multiquery.NewRetriever(ctx, &multiquery.Config{
|
|
RewriteLLM: llm,
|
|
RewriteTemplate: nil, // use default
|
|
QueryVar: "", // use default
|
|
LLMOutputParser: nil, // use default
|
|
MaxQueriesNum: 3,
|
|
OrigRetriever: vk,
|
|
FusionFunc: nil, // use default fusion, just deduplicate by doc id
|
|
})
|
|
if err != nil {
|
|
logs.Errorf("NewMultiQueryRetriever failed, err=%v", err)
|
|
return
|
|
}
|
|
|
|
resp, err := mqr.Retrieve(ctx, "tourist attraction")
|
|
if err != nil {
|
|
logs.Errorf("Multi-Query Retrieve failed, err=%v", err)
|
|
return
|
|
}
|
|
|
|
logs.Infof("Multi-Query Retrieve success, docs=%v", resp)
|
|
|
|
// rewrite query by custom method
|
|
mqr, err = multiquery.NewRetriever(ctx, &multiquery.Config{
|
|
RewriteHandler: func(ctx context.Context, query string) ([]string, error) {
|
|
return strings.Split(query, "\n"), nil
|
|
},
|
|
MaxQueriesNum: 3,
|
|
OrigRetriever: vk,
|
|
FusionFunc: nil, // use default fusion, just deduplicate by doc id
|
|
})
|
|
if err != nil {
|
|
logs.Errorf("NewMultiQueryRetriever failed, err=%v", err)
|
|
return
|
|
}
|
|
|
|
resp, err = mqr.Retrieve(ctx, "tourist attraction")
|
|
if err != nil {
|
|
logs.Errorf("Multi-Query Retrieve failed, err=%v", err)
|
|
return
|
|
}
|
|
|
|
logs.Infof("Multi-Query Retrieve success, docs=%v", resp)
|
|
}
|
|
|
|
func newChatModel(ctx context.Context, baseURL, apiKey, modelName string) (model.ChatModel, error) {
|
|
|
|
return openai.NewChatModel(ctx, &openai.ChatModelConfig{
|
|
BaseURL: baseURL,
|
|
APIKey: apiKey,
|
|
Model: modelName,
|
|
})
|
|
}
|
|
|
|
func newVikingDBRetriever(ctx context.Context, host, region, ak, sk string) (retriever.Retriever, error) {
|
|
|
|
baseTopK := 5
|
|
return volc_vikingdb.NewRetriever(ctx, &volc_vikingdb.RetrieverConfig{
|
|
Host: host,
|
|
Region: region,
|
|
AK: ak,
|
|
SK: sk,
|
|
EmbeddingConfig: volc_vikingdb.EmbeddingConfig{
|
|
UseBuiltin: true,
|
|
},
|
|
Index: "3", // index version, replace if needed
|
|
TopK: &baseTopK,
|
|
})
|
|
}
|