mirror of https://github.com/docker/docs.git
71 lines
1.5 KiB
Go
71 lines
1.5 KiB
Go
package drivers
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import (
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"fmt"
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"github.com/docker/machine/libmachine/log"
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"github.com/docker/machine/libmachine/mcnutils"
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"github.com/docker/machine/libmachine/ssh"
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)
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func GetSSHClientFromDriver(d Driver) (ssh.Client, error) {
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addr, err := d.GetSSHHostname()
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if err != nil {
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return nil, err
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}
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port, err := d.GetSSHPort()
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if err != nil {
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return nil, err
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}
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auth := &ssh.Auth{
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Keys: []string{d.GetSSHKeyPath()},
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}
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client, err := ssh.NewClient(d.GetSSHUsername(), addr, port, auth)
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return client, err
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}
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func RunSSHCommandFromDriver(d Driver, command string) (string, error) {
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client, err := GetSSHClientFromDriver(d)
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if err != nil {
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return "", err
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}
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log.Debugf("About to run SSH command:\n%s", command)
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output, err := client.Output(command)
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log.Debugf("SSH cmd err, output: %v: %s", err, output)
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if err != nil {
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returnedErr := fmt.Errorf(`Something went wrong running an SSH command!
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command : %s
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err : %v
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output : %s
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`, command, err, output)
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return "", returnedErr
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}
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return output, nil
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}
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func sshAvailableFunc(d Driver) func() bool {
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return func() bool {
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log.Debug("Getting to WaitForSSH function...")
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if _, err := RunSSHCommandFromDriver(d, "exit 0"); err != nil {
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log.Debugf("Error getting ssh command 'exit 0' : %s", err)
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return false
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}
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return true
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}
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}
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func WaitForSSH(d Driver) error {
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// Try to dial SSH for 30 seconds before timing out.
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if err := mcnutils.WaitFor(sshAvailableFunc(d)); err != nil {
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return fmt.Errorf("Too many retries waiting for SSH to be available. Last error: %s", err)
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}
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return nil
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}
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