func initDocker() error {
if !(util.CmdExists("docker-machine") && util.CmdExists("docker")) {
return errors.New("docker not installed")
}
if status := string(util.Command("docker-machine", "status", "default").Output()); status != "Running" {
log.Println("docker-machine start ...")
if err := util.Command("docker-machine", "start", "default").Run(); err != nil {
return err
}
}
if os.Getenv("DOCKER_HOST") == "" || os.Getenv("DOCKER_CERT_PATH") == "" || os.Getenv("DOCKER_TLS_VERIFY") == "" {
os.Setenv("SHELL", "/bin/bash")
envSettings := strings.Split(string(util.Command("docker-machine", "env", "default").Output()), "\n")
for _, line := range envSettings {
line = strings.TrimSpace(line)
if line == "" || strings.HasPrefix(line, "#") {
continue
}
line = strings.TrimPrefix(line, "export ")
keyVal := strings.Split(line, "=")
os.Setenv(keyVal[0], keyVal[1])
}
}
return nil
}
func dockerImageExists(image string) (bool, error) {
cmd := util.Command("docker", "images", "--quiet=true", image)
if len(cmd.Output()) > 0 && cmd.Err() == nil {
return true, nil
}
return false, cmd.Err()
}
func dockerRun(args []string) (string, error) {
args = append([]string{"run"}, args...)
cmd := util.Command("docker", args...)
containerID := string(cmd.Output())
if cmd.Err() != nil {
return "", cmd.Err()
}
return containerID, nil
}
func dockerPS(filter string) (string, error) {
args := []string{
"ps",
"--all=true",
"--no-trunc=true",
"--quiet=true",
"--filter=" + filter,
}
cmd := util.Command("docker", args...)
containerID := string(cmd.Output())
if cmd.Err() != nil {
return "", cmd.Err()
}
if containerID == "" {
return "", fmt.Errorf("cannot find container with condition %s", filter)
}
return containerID, nil
}
func (c *Container) ports() (map[int]int, error) {
result := make(map[int]int)
cmd := util.Command("docker", "port", c.ID)
out := cmd.Output()
lines := bytes.Split(out, []byte("\n"))
for _, line := range lines {
m := rxPortMapping.FindSubmatch(line)
if len(m) != 3 {
return nil, fmt.Errorf("unexpected input %s", string(line))
}
from, err := strconv.Atoi(string(m[1]))
if err != nil {
return nil, err
}
to, err := strconv.Atoi(string(m[2]))
if err != nil {
return nil, err
}
result[from] = to
}
return result, nil
}
func (c *Container) Command(cmd string, args ...string) *util.Cmd {
args = append([]string{"exec", c.ID, cmd}, args...)
return util.Command("docker", args...)
}
func (c *Container) Log() string {
return string(util.Command("docker", "logs", c.ID).Output())
}
func (c *Container) Remove() error {
return util.Command("docker", "rm", c.ID).Run()
}
func (c *Container) Kill() error {
return util.Command("docker", "kill", c.ID).Run()
}
func dockerStart(id string) error {
return util.Command("docker", "start", id).Run()
}
func dockerPull(image string) error {
return util.Command("docker", "pull", image).Run()
}
func (c Container) ip() (string, error) {
out := util.Command("docker-machine", "ip", "default").Output()
return string(bytes.TrimSpace(out)), nil
}