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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 main
import (
"bytes"
"context"
"fmt"
"os"
"os/exec"
"runtime"
"github.com/cloudwego/eino-examples/adk/multiagent/deep/params"
)
type LocalOperator struct{}
func (l *LocalOperator) ReadFile(ctx context.Context, path string) (string, error) {
b, err := os.ReadFile(path)
if err != nil {
return err.Error(), nil
}
return string(b), nil
}
func (l *LocalOperator) WriteFile(ctx context.Context, path string, content string) error {
return os.WriteFile(path, []byte(content), 0666)
}
func (l *LocalOperator) IsDirectory(ctx context.Context, path string) (bool, error) {
return true, nil
}
func (l *LocalOperator) Exists(ctx context.Context, path string) (bool, error) {
return true, nil
}
func (l *LocalOperator) RunCommand(ctx context.Context, command string) (string, error) {
wd, ok := params.GetTypedContextParams[string](ctx, params.WorkDirSessionKey)
if !ok {
return "", fmt.Errorf("work dir not found")
}
var shellCmd []string
switch runtime.GOOS {
case "windows":
shellCmd = []string{"cmd.exe", "/C", command}
default:
shellCmd = []string{"/bin/sh", "-c", command}
}
cmd := exec.CommandContext(ctx, shellCmd[0], shellCmd[1:]...)
cmd.Dir = wd
outBuf := new(bytes.Buffer)
errBuf := new(bytes.Buffer)
cmd.Stdout = outBuf
cmd.Stderr = errBuf
err := cmd.Run()
if err != nil {
return fmt.Sprintf("internal error:\ncommand: %v\n\nexec error: %v", cmd.String(), errBuf.String()), nil
}
return outBuf.String(), nil
}