forgejo-federation/modules/process/manager_exec.go

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// Copyright 2022 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package process
import (
"bytes"
"context"
"io"
"os/exec"
"time"
)
// Exec a command and use the default timeout.
func (pm *Manager) Exec(desc, cmdName string, args ...string) (string, string, error) {
return pm.ExecDir(DefaultContext, -1, "", desc, cmdName, args...)
}
// ExecTimeout a command and use a specific timeout duration.
func (pm *Manager) ExecTimeout(timeout time.Duration, desc, cmdName string, args ...string) (string, string, error) {
return pm.ExecDir(DefaultContext, timeout, "", desc, cmdName, args...)
}
// ExecDir a command and use the default timeout.
func (pm *Manager) ExecDir(ctx context.Context, timeout time.Duration, dir, desc, cmdName string, args ...string) (string, string, error) {
return pm.ExecDirEnv(ctx, timeout, dir, desc, nil, cmdName, args...)
}
// ExecDirEnv runs a command in given path and environment variables, and waits for its completion
// up to the given timeout (or DefaultTimeout if -1 is given).
// Returns its complete stdout and stderr
// outputs and an error, if any (including timeout)
func (pm *Manager) ExecDirEnv(ctx context.Context, timeout time.Duration, dir, desc string, env []string, cmdName string, args ...string) (string, string, error) {
return pm.ExecDirEnvStdIn(ctx, timeout, dir, desc, env, nil, cmdName, args...)
}
// ExecDirEnvStdIn runs a command in given path and environment variables with provided stdIN, and waits for its completion
// up to the given timeout (or DefaultTimeout if timeout <= 0 is given).
// Returns its complete stdout and stderr
// outputs and an error, if any (including timeout)
func (pm *Manager) ExecDirEnvStdIn(ctx context.Context, timeout time.Duration, dir, desc string, env []string, stdIn io.Reader, cmdName string, args ...string) (string, string, error) {
if timeout <= 0 {
timeout = 60 * time.Second
}
stdOut := new(bytes.Buffer)
stdErr := new(bytes.Buffer)
ctx, _, finished := pm.AddContextTimeout(ctx, timeout, desc)
defer finished()
cmd := exec.CommandContext(ctx, cmdName, args...)
cmd.Dir = dir
cmd.Env = env
cmd.Stdout = stdOut
cmd.Stderr = stdErr
if stdIn != nil {
cmd.Stdin = stdIn
}
if err := cmd.Start(); err != nil {
return "", "", err
}
err := cmd.Wait()
if err != nil {
err = &Error{
PID: GetPID(ctx),
Description: desc,
Err: err,
CtxErr: ctx.Err(),
Stdout: stdOut.String(),
Stderr: stdErr.String(),
}
}
return stdOut.String(), stdErr.String(), err
}