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Go

/*
* Copyright 2025 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 model
import (
"context"
"log"
"os"
"strings"
"github.com/cloudwego/eino-ext/components/model/ark"
"github.com/cloudwego/eino-ext/components/model/openai"
"github.com/cloudwego/eino/components/model"
arkModel "github.com/volcengine/volcengine-go-sdk/service/arkruntime/model"
)
func NewChatModel() model.ToolCallingChatModel {
modelType := strings.ToLower(os.Getenv("MODEL_TYPE"))
// Create Ark ChatModel when MODEL_TYPE is "ark"
if modelType == "ark" {
cm, err := ark.NewChatModel(context.Background(), &ark.ChatModelConfig{
// Add Ark-specific configuration from environment variables
APIKey: os.Getenv("ARK_API_KEY"),
Model: os.Getenv("ARK_MODEL"),
BaseURL: os.Getenv("ARK_BASE_URL"),
Thinking: &arkModel.Thinking{
Type: arkModel.ThinkingTypeDisabled,
},
})
if err != nil {
log.Fatalf("ark.NewChatModel failed: %v", err)
}
return cm
}
// Create OpenAI ChatModel (default)
cm, err := openai.NewChatModel(context.Background(), &openai.ChatModelConfig{
APIKey: os.Getenv("OPENAI_API_KEY"),
Model: os.Getenv("OPENAI_MODEL"),
BaseURL: os.Getenv("OPENAI_BASE_URL"),
ByAzure: func() bool {
return os.Getenv("OPENAI_BY_AZURE") == "true"
}(),
})
if err != nil {
log.Fatalf("openai.NewChatModel failed: %v", err)
}
return cm
}