// UploadBinaries is intended to create a temporary directory on a remote server,
// upload binaries to the temporary location and return path to the directory.
// The tempoary directory will be removed before the program exits
func UploadBinaries(conf *sshconf.Config, pathbins ...string) (string, error) {
c, err := ssh.NewSshConn(conf)
if err != nil {
return "", FormatError(err)
}
defer c.ConnClose()
dir, errout, err := c.Run("mktemp -d --suffix _deployer_bin")
if err != nil {
return "", FormatError(fmt.Errorf("%s [%v]", errout, err))
}
dir = strings.TrimSpace(dir)
for _, src := range pathbins {
dst := filepath.Join(dir, filepath.Base(src))
if err := c.Upload(src, dst); err != nil {
return "", FormatError(err)
}
if _, errout, err := c.Run("chmod 755 " + dst); err != nil {
return "", FormatError(fmt.Errorf("%s [%v]", errout, err))
}
}
return dir, nil
}
// RunFunc is a generic solution for running appropriate commands
// on local or remote host
func RunFunc(config *sshconf.Config) func(string) (string, error) {
if config == nil {
return func(command string) (string, error) {
var stderr bytes.Buffer
var stdout bytes.Buffer
c := exec.Command("/bin/bash", "-c", command)
c.Stderr = &stderr
c.Stdout = &stdout
if err := c.Start(); err != nil {
return "", FormatError(err)
}
if err := c.Wait(); err != nil {
return "", fmt.Errorf("executing %s : %s [%s]", command, stderr.String(), err)
}
return strings.TrimSpace(stdout.String()), nil
}
}
return func(command string) (string, error) {
c, err := ssh.NewSshConn(config)
if err != nil {
return "", FormatError(err)
}
defer c.ConnClose()
var cmd string
if strings.TrimSpace(config.User) == "root" {
cmd = command
} else {
//IMPORTANT! Make sure that "Defaults !requiretty" is set in sudoers on remote system
cmd = "sudo " + command
}
outstr, errstr, err := c.Run(cmd)
if err != nil {
return "", fmt.Errorf("executing %s : %s [%s]", cmd, errstr, err)
}
return strings.TrimSpace(outstr), nil
}
}