Golang ssh.WaitForTCP函数代码示例

func sshAvailableFunc(h *Host) func() bool {
	return func() bool {
		log.Debug("Getting to WaitForSSH function...")
		hostname, err := h.Driver.GetSSHHostname()
		if err != nil {
			log.Debugf("Error getting IP address waiting for SSH: %s", err)
			return false
		}
		port, err := h.Driver.GetSSHPort()
		if err != nil {
			log.Debugf("Error getting SSH port: %s", err)
			return false
		}
		if err := ssh.WaitForTCP(fmt.Sprintf("%s:%d", hostname, port)); err != nil {
			log.Debugf("Error waiting for TCP waiting for SSH: %s", err)
			return false
		}
		cmd, err := h.GetSSHCommand("exit 0")
		if err != nil {
			log.Debugf("Error getting ssh command 'exit 0' : %s", err)
			return false
		}
		if err := cmd.Run(); err != nil {
			log.Debugf("Error running ssh command 'exit 0' : %s", err)
			return false
		}
		return true
	}
}

func (d *Driver) Start() error {
	if err := vbm("startvm", d.MachineName, "--type", "headless"); err != nil {
		return err
	}
	log.Infof("Waiting for VM to start...")
	return ssh.WaitForTCP(fmt.Sprintf("localhost:%d", d.SSHPort))
}

func (d *Driver) Create() error {
	log.Infof("Creating SSH key...")
	key, err := d.createSSHKey()
	if err != nil {
		return err
	}

	spec := d.buildHostSpec()
	spec.SshKeys = []*SshKey{key}

	id, err := d.getClient().VirtualGuest().Create(spec)
	if err != nil {
		return fmt.Errorf("Error creating host: %q", err)
	}
	d.Id = id
	d.getIp()
	d.waitForStart()
	d.waitForSetupTransactions()
	ssh.WaitForTCP(d.IPAddress + ":22")

	cmd, err := drivers.GetSSHCommandFromDriver(d, "sudo apt-get update && DEBIAN_FRONTEND=noninteractive sudo apt-get install -yq curl")
	if err != nil {
		return err

	}
	if err := cmd.Run(); err != nil {
		return err

	}

	return nil
}

func sshAvailableFunc(d Driver) func() bool {
	return func() bool {
		log.Debug("Getting to WaitForSSH function...")
		hostname, err := d.GetSSHHostname()
		if err != nil {
			log.Debugf("Error getting IP address waiting for SSH: %s", err)
			return false
		}
		port, err := d.GetSSHPort()
		if err != nil {
			log.Debugf("Error getting SSH port: %s", err)
			return false
		}
		if err := ssh.WaitForTCP(fmt.Sprintf("%s:%d", hostname, port)); err != nil {
			log.Debugf("Error waiting for TCP waiting for SSH: %s", err)
			return false
		}

		if _, err := RunSSHCommandFromDriver(d, "exit 0"); err != nil {
			log.Debugf("Error getting ssh command 'exit 0' : %s", err)
			return false
		}
		return true
	}
}

func (driver *Driver) waitForSSH() error {
	log.Infof("Waiting for SSH...")
	err := ssh.WaitForTCP(fmt.Sprintf("%s:%v", driver.getHostname(), driver.SSHPort))
	if err != nil {
		return err
	}

	return nil
}

func (d *Driver) waitForSSHServer() error {
	ip, err := d.GetIP()
	if err != nil {
		return err
	}
	log.WithFields(log.Fields{
		"MachineId": d.MachineId,
		"IP":        ip,
	}).Debug("Waiting for the SSH server to be started...")
	return ssh.WaitForTCP(fmt.Sprintf("%s:%d", ip, d.SSHPort))
}

func (d *Driver) wait() error {
	log.Infof("Waiting for host to start...")
	for {
		ip, _ := d.GetIP()
		if ip != "" {
			break
		}
		time.Sleep(1 * time.Second)
	}
	log.Infof("Got IP, waiting for SSH")
	ip, err := d.GetIP()
	if err != nil {
		return err
	}
	return ssh.WaitForTCP(fmt.Sprintf("%s:22", ip))
}

func (d *Driver) Start() error {
	s, err := d.GetState()
	if err != nil {
		return err
	}

	if s == state.Stopped {
		// check network to re-create if needed
		if err := d.setupHostOnlyNetwork(d.MachineName); err != nil {
			return fmt.Errorf("Error setting up host only network on machine start: %s", err)
		}
	}

	switch s {
	case state.Stopped, state.Saved:
		d.SSHPort, err = setPortForwarding(d.MachineName, 1, "ssh", "tcp", 22, d.SSHPort)
		if err != nil {
			return err
		}
		if err := vbm("startvm", d.MachineName, "--type", "headless"); err != nil {
			return err
		}
		log.Infof("Starting VM...")
	case state.Paused:
		if err := vbm("controlvm", d.MachineName, "resume", "--type", "headless"); err != nil {
			return err
		}
		log.Infof("Resuming VM ...")
	default:
		log.Infof("VM not in restartable state")
	}

	addr, err := d.GetSSHHostname()
	if err := ssh.WaitForTCP(fmt.Sprintf("%s:%d", addr, d.SSHPort)); err != nil {
		return err
	}

	// Bail if we don't get an IP from DHCP after a given number of seconds.
	if err := utils.WaitForSpecific(d.hostOnlyIpAvailable, 5, 4*time.Second); err != nil {
		return err
	}

	return err
}

func (d *Driver) wait(timeout time.Duration) (err error) {
	log.Infof("Waiting for VM to start...")

	ctx, cancel := context.WithTimeout(context.Background(), timeout)
	defer cancel()

	out := make(chan error, 1)
	go func(ctx context.Context, out chan<- error) {
		var ip string
		for {
			ip, _ = d.GetIP()
			if ip != "" {
				break
			}
			if t, ok := ctx.Deadline(); ok && time.Now().After(t) {
				out <- fmt.Errorf("Wait GetIP timed out")
				return
			}
			time.Sleep(1 * time.Second)
		}

		port, err := d.GetSSHPort()
		if err != nil {
			out <- err
			return
		}

		addr := fmt.Sprintf("%s:%d", ip, port)
		log.Infof("Got VM address(%v), Now waiting for SSH", addr)
		out <- ssh.WaitForTCP(addr)
	}(ctx, out)

	select {
	case err := <-out:
		return err
	case <-ctx.Done():
		return fmt.Errorf("Wait for VM to start timed out: %v", ctx.Err())
	}

	return nil
}

func (d *Driver) Start() error {
	s, err := d.GetState()
	if err != nil {
		return err
	}

	switch s {
	case state.Stopped, state.Saved:
		if err := vbm("startvm", d.MachineName, "--type", "headless"); err != nil {
			return err
		}
		log.Infof("Waiting for VM to start...")
	case state.Paused:
		if err := vbm("controlvm", d.MachineName, "resume", "--type", "headless"); err != nil {
			return err
		}
		log.Infof("Resuming VM ...")
	default:
		log.Infof("VM not in restartable state")
	}

	return ssh.WaitForTCP(fmt.Sprintf("localhost:%d", d.SSHPort))
}

func (d *Driver) Create() error {
	if err := d.setUserSubscription(); err != nil {
		return err
	}

	log.Info("Creating Azure machine...")
	vmConfig, err := vmClient.CreateAzureVMConfiguration(d.MachineName, d.Size, d.Image, d.Location)
	if err != nil {
		return err
	}

	log.Debug("Generating certificate for Azure...")
	if err := d.generateCertForAzure(); err != nil {
		return err
	}

	log.Debug("Adding Linux provisioning...")
	vmConfig, err = vmClient.AddAzureLinuxProvisioningConfig(vmConfig, d.GetSSHUsername(), d.UserPassword, d.azureCertPath(), d.SSHPort)
	if err != nil {
		return err
	}

	log.Debug("Authorizing ports...")
	if err := d.addDockerEndpoint(vmConfig); err != nil {
		return err
	}

	log.Debug("Creating VM...")
	if err := vmClient.CreateAzureVM(vmConfig, d.MachineName, d.Location); err != nil {
		return err
	}

	log.Info("Waiting for SSH...")
	log.Debugf("Host: %s SSH Port: %d", d.getHostname(), d.SSHPort)
	return ssh.WaitForTCP(fmt.Sprintf("%s:%d", d.getHostname(), d.SSHPort))
}

func (d *Driver) uploadKeyPair() error {

	ipAddr := d.IPAddress
	port, _ := d.GetSSHPort()
	tcpAddr := fmt.Sprintf("%s:%d", ipAddr, port)

	ssh.WaitForTCP(tcpAddr)

	auth := ssh.Auth{
		Passwords: []string{d.SSHPassword},
	}

	sshClient, err := ssh.NewClient(d.GetSSHUsername(), ipAddr, port, &auth)

	if err != nil {
		return err
	}

	command := fmt.Sprintf("mkdir -p ~/.ssh; echo '%s' > ~/.ssh/authorized_keys", string(d.PublicKey))

	log.Debugf("Upload the public key with command: %s", command)

	output, err := sshClient.Output(command)

	log.Debugf("Upload command err, output: %v: %s", err, output)

	if err != nil {
		return err
	}

	log.Debugf("Upload the public key with command: %s", command)

	fixRoutingRules(sshClient)

	return nil
}

func (d *Driver) Create() error {
	d.setDropletNameIfNotSet()

	log.Infof("Creating SSH key...")

	key, err := d.createSSHKey()
	if err != nil {
		return err
	}

	d.SSHKeyID = key.ID

	log.Infof("Creating Digital Ocean droplet...")

	client := d.getClient()

	createRequest := &godo.DropletCreateRequest{
		Image:   d.Image,
		Name:    d.DropletName,
		Region:  d.Region,
		Size:    d.Size,
		SSHKeys: []interface{}{d.SSHKeyID},
	}

	newDroplet, _, err := client.Droplets.Create(createRequest)
	if err != nil {
		return err
	}

	d.DropletID = newDroplet.Droplet.ID

	for {
		newDroplet, _, err = client.Droplets.Get(d.DropletID)
		if err != nil {
			return err
		}
		for _, network := range newDroplet.Droplet.Networks.V4 {
			if network.Type == "public" {
				d.IPAddress = network.IPAddress
			}
		}

		if d.IPAddress != "" {
			break
		}

		time.Sleep(1 * time.Second)
	}

	log.Debugf("Created droplet ID %d, IP address %s",
		newDroplet.Droplet.ID,
		d.IPAddress)

	log.Infof("Waiting for SSH...")

	if err := ssh.WaitForTCP(fmt.Sprintf("%s:%d", d.IPAddress, 22)); err != nil {
		return err
	}

	log.Debugf("HACK: Downloading version of Docker with identity auth...")

	cmd, err := d.GetSSHCommand("stop docker")
	if err != nil {
		return err
	}
	if err := cmd.Run(); err != nil {
		return err
	}

	cmd, err = d.GetSSHCommand("curl -sS https://ehazlett.s3.amazonaws.com/public/docker/linux/docker-1.4.1-136b351e-identity > /usr/bin/docker")
	if err != nil {
		return err
	}
	if err := cmd.Run(); err != nil {
		return err
	}

	log.Debugf("Updating /etc/default/docker to use identity auth...")

	cmd, err = d.GetSSHCommand("echo 'export DOCKER_OPTS=\"--auth=identity --host=tcp://0.0.0.0:2376\"' >> /etc/default/docker")
	if err != nil {
		return err
	}
	if err := cmd.Run(); err != nil {
		return err
	}

	log.Debugf("Adding key to authorized-keys.d...")

	if err := drivers.AddPublicKeyToAuthorizedHosts(d, "/.docker/authorized-keys.d"); err != nil {
		return err
	}

	cmd, err = d.GetSSHCommand("start docker")
	if err != nil {
		return err
	}
	if err := cmd.Run(); err != nil {
		return err
	}
//.........这里部分代码省略.........

func (d *Driver) waitForSSH() error {
	log.Infof("Waiting for SSH...")
	return ssh.WaitForTCP(fmt.Sprintf("%s:%v", d.getHostname(), d.SSHPort))
}

//.........这里部分代码省略.........
	vapptemplate, err := cati.GetVAppTemplate()
	if err != nil {
		return err
	}

	// Create a new empty vApp
	vapp := govcloudair.NewVApp(p)

	log.Infof("Creating a new vApp: %s...", d.MachineName)
	// Compose the vApp with ComposeVApp
	task, err := vapp.ComposeVApp(net, vapptemplate, d.MachineName, "Container Host created with Docker Host")
	if err != nil {
		return err
	}

	// Wait for the creation to be completed
	if err = task.WaitTaskCompletion(); err != nil {
		return err
	}

	task, err = vapp.ChangeCPUcount(d.CPUCount)
	if err != nil {
		return err
	}

	if err = task.WaitTaskCompletion(); err != nil {
		return err
	}

	task, err = vapp.ChangeMemorySize(d.MemorySize)
	if err != nil {
		return err
	}

	if err = task.WaitTaskCompletion(); err != nil {
		return err
	}

	sshCustomScript := "echo \"" + strings.TrimSpace(key) + "\" > /root/.ssh/authorized_keys"

	task, err = vapp.RunCustomizationScript(d.MachineName, sshCustomScript)
	if err != nil {
		return err
	}

	if err = task.WaitTaskCompletion(); err != nil {
		return err
	}

	task, err = vapp.PowerOn()
	if err != nil {
		return err
	}

	log.Infof("Waiting for the VM to power on and run the customization script...")

	if err = task.WaitTaskCompletion(); err != nil {
		return err
	}

	log.Infof("Creating NAT and Firewall Rules on %s...", d.EdgeGateway)
	task, err = edge.Create1to1Mapping(vapp.VApp.Children.VM[0].NetworkConnectionSection.NetworkConnection.IPAddress, d.PublicIP, d.MachineName)
	if err != nil {
		return err
	}

	if err = task.WaitTaskCompletion(); err != nil {
		return err
	}

	log.Infof("Waiting for SSH...")

	if err := ssh.WaitForTCP(fmt.Sprintf("%s:%d", d.PublicIP, d.SSHPort)); err != nil {
		return err
	}

	connTest := "ping -c 3 www.google.com >/dev/null 2>&1 && ( echo \"Connectivity and DNS tests passed.\" ) || ( echo \"Connectivity and DNS tests failed, trying to add Nameserver to resolv.conf\"; echo \"nameserver 8.8.8.8\" >> /etc/resolv.conf )"

	log.Debugf("Connectivity and DNS sanity test...")
	cmd, err := drivers.GetSSHCommandFromDriver(d, connTest)
	if err != nil {
		return err
	}

	if err := cmd.Run(); err != nil {
		return err
	}

	log.Debugf("Disconnecting from vCloud Air...")

	if err = p.Disconnect(); err != nil {
		return err
	}

	// Set VAppID with ID of the created VApp
	d.VAppID = vapp.VApp.ID

	return nil

}