func RunDockerContainer(cmd string) {
herokuClient := HttpClient()
request := MakeRequest(appName, "config-vars", "")
resp, err := herokuClient.Do(request)
if err != nil {
panic("do request")
}
herokuEnv, err := ioutil.ReadAll(resp.Body)
if err != nil {
panic("read response")
}
fmt.Println("Heroku Env:", string(herokuEnv))
cwd, _ := os.Getwd()
dClient, err := dockerClient.NewClient("unix:///var/run/docker.sock")
if err != nil {
panic("new client")
}
var config docker.Config
exposedPorts := make(map[docker.Port]struct{})
exposedPorts["80"] = struct{}{}
volumes := make(map[string]struct{})
volumes["/app"] = struct{}{}
config.Volumes = volumes
config.ExposedPorts = exposedPorts
config.Cmd = []string{"/bin/bash", "-c", cmd}
config.Env = []string{"PORT=80"}
config.Image = "heroku-runtime"
config.WorkingDir = "/app"
container, err := dClient.CreateContainer(dockerClient.CreateContainerOptions{}, &config)
if err != nil {
panic("create container")
}
err = dClient.StartContainer(container.ID, &docker.HostConfig{Binds: []string{cwd + "/app:/app"}})
if err != nil {
panic("start container")
}
fmt.Fprintf(os.Stdout, "%s\n", container.ID)
}
func (c App) Attach(user string, ws *websocket.Conn) revel.Result {
config := docker.Config{}
config.Cmd = []string{"/bin/bash"}
config.Image = "workshops:" + c.Params.Values.Get("image")
config.Tty = true
config.AttachStdin = true
config.AttachStdout = true
config.OpenStdin = true
config.StdinOnce = true
container, err := c.DockerClient.CreateContainer(&config)
if err != nil {
fmt.Println(err.Error())
c.Response.Status = 500
return c.RenderText(err.Error())
}
id := container.ShortID()
err = c.DockerClient.StartContainer(id)
if err != nil {
fmt.Println(err.Error())
c.Response.Status = 500
return c.RenderText(err.Error())
}
endpoint := "ws://127.0.0.1:4243/v1.5/containers/" + id + "/attach/ws?logs=1&stderr=1&stdout=1&stream=1&stdin=1"
containerWs, err := websocket.Dial(endpoint, "", "http://localhost")
if err != nil {
fmt.Println(err.Error())
c.Response.Status = 500
return c.RenderText(err.Error())
}
finished := make(chan bool)
go func() {
defer containerWs.Close()
buf := make([]byte, 40*1024)
for {
n, err := containerWs.Read(buf)
if err != nil {
break
}
if n != 0 {
ws.Write(buf[0:n])
}
}
finished <- true
}()
go func() {
defer ws.Close()
defer containerWs.Close()
buf := make([]byte, 40*1024)
for {
n, err := ws.Read(buf)
if err != nil {
break
}
if n != 0 {
containerWs.Write(buf[0:n])
}
}
finished <- true
}()
<-finished
<-finished
return c.RenderText("OK")
}