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Go

/*
* Copyright 2026 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"
"log"
"os"
"path/filepath"
"time"
clc "github.com/cloudwego/eino-ext/callbacks/cozeloop"
"github.com/cloudwego/eino/adk"
"github.com/cloudwego/eino/callbacks"
"github.com/coze-dev/cozeloop-go"
adkstore "github.com/cloudwego/eino-examples/adk/common/store"
"github.com/cloudwego/eino-examples/quickstart/chatwitheino/mem"
"github.com/cloudwego/eino-examples/quickstart/chatwitheino/server"
)
func main() {
ctx := context.Background()
// setup cozeloop tracing (optional)
// COZELOOP_WORKSPACE_ID=your workspace id
// COZELOOP_API_TOKEN=your token
cozeloopApiToken := os.Getenv("COZELOOP_API_TOKEN")
cozeloopWorkspaceID := os.Getenv("COZELOOP_WORKSPACE_ID")
if cozeloopApiToken != "" && cozeloopWorkspaceID != "" {
client, err := cozeloop.NewClient(
cozeloop.WithAPIToken(cozeloopApiToken),
cozeloop.WithWorkspaceID(cozeloopWorkspaceID),
)
if err != nil {
log.Fatalf("cozeloop.NewClient failed: %v", err)
}
defer func() {
time.Sleep(5 * time.Second)
client.Close(ctx)
}()
callbacks.AppendGlobalHandlers(clc.NewLoopHandler(client))
}
agent, err := buildAgent(ctx)
if err != nil {
log.Fatalf("failed to build agent: %v", err)
}
runner := adk.NewRunner(ctx, adk.RunnerConfig{
Agent: agent,
EnableStreaming: true,
CheckPointStore: adkstore.NewInMemoryStore(),
})
sessionDir := os.Getenv("SESSION_DIR")
if sessionDir == "" {
sessionDir = "./data/sessions"
}
workspaceDir := os.Getenv("WORKSPACE_DIR")
if workspaceDir == "" {
workspaceDir = "./data/workspace"
}
store, err := mem.NewStore(sessionDir)
if err != nil {
log.Fatalf("failed to create session store: %v", err)
}
port := os.Getenv("PORT")
if port == "" {
port = "8080"
}
projectRoot := os.Getenv("PROJECT_ROOT")
if projectRoot == "" {
// Default: the directory from which the binary is run.
// Override with PROJECT_ROOT=/path/to/repo to give the agent full codebase access.
if cwd, err := os.Getwd(); err == nil {
projectRoot = cwd
}
}
if abs, err := filepath.Abs(projectRoot); err == nil {
projectRoot = abs
}
log.Printf("project root: %s", projectRoot)
// EXAMPLES_DIR points to the root of the eino-examples repository.
// Defaults to PROJECT_ROOT/examples if that directory exists, otherwise PROJECT_ROOT.
examplesDir := os.Getenv("EXAMPLES_DIR")
if examplesDir == "" {
candidate := filepath.Join(projectRoot, "examples")
if fi, err := os.Stat(candidate); err == nil && fi.IsDir() {
examplesDir = candidate
} else {
examplesDir = projectRoot
}
}
if abs, err := filepath.Abs(examplesDir); err == nil {
examplesDir = abs
}
log.Printf("examples dir: %s", examplesDir)
srv := server.New(server.Config{
Runner: runner,
Store: store,
WorkspaceDir: workspaceDir,
ProjectRoot: projectRoot,
ExamplesDir: examplesDir,
Port: port,
})
log.Printf("starting server on http://localhost:%s", port)
srv.Spin()
}