consul/test/integration/consul-container/libs/utils/docker.go

42 lines
829 B
Go

// Copyright (c) HashiCorp, Inc.
// SPDX-License-Identifier: MPL-2.0
package utils
import (
"bytes"
"fmt"
"io"
"os"
"os/exec"
)
// DockerExec simply shell out to the docker CLI binary on your host.
func DockerExec(args []string, stdout io.Writer) error {
return cmdExec("docker", "docker", args, stdout, "")
}
func cmdExec(name, binary string, args []string, stdout io.Writer, dir string) error {
if binary == "" {
panic("binary named " + name + " was not detected")
}
var errWriter bytes.Buffer
if stdout == nil {
stdout = os.Stdout
}
cmd := exec.Command(binary, args...)
if dir != "" {
cmd.Dir = dir
}
cmd.Stdout = stdout
cmd.Stderr = &errWriter
cmd.Stdin = nil
if err := cmd.Run(); err != nil {
return fmt.Errorf("could not invoke %q: %v : %s", name, err, errWriter.String())
}
return nil
}