124 lines
3.2 KiB
Go
124 lines
3.2 KiB
Go
package openstack
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import (
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"errors"
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"fmt"
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"log"
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"time"
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"github.com/mitchellh/multistep"
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"github.com/rackspace/gophercloud"
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"github.com/rackspace/gophercloud/openstack/compute/v2/extensions/floatingip"
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"github.com/rackspace/gophercloud/openstack/compute/v2/servers"
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"golang.org/x/crypto/ssh"
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)
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// CommHost looks up the host for the communicator.
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func CommHost(
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client *gophercloud.ServiceClient,
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sshinterface string) func(multistep.StateBag) (string, error) {
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return func(state multistep.StateBag) (string, error) {
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s := state.Get("server").(*servers.Server)
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// If we have a specific interface, try that
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if sshinterface != "" {
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if addr := sshAddrFromPool(s, sshinterface); addr != "" {
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log.Printf("[DEBUG] Using IP address %s from specified interface %s for SSH", addr, sshinterface)
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return addr, nil
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}
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}
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// If we have a floating IP, use that
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ip := state.Get("access_ip").(*floatingip.FloatingIP)
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if ip != nil && ip.IP != "" {
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log.Printf("[DEBUG] Using floating IP %s for SSH", ip.IP)
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return ip.IP, nil
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}
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if s.AccessIPv4 != "" {
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log.Printf("[DEBUG] Using AccessIPv4 %s for SSH", s.AccessIPv4)
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return s.AccessIPv4, nil
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}
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// Try to get it from the requested interface
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if addr := sshAddrFromPool(s, sshinterface); addr != "" {
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log.Printf("[DEBUG] Using IP address %s for SSH", addr)
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return addr, nil
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}
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s, err := servers.Get(client, s.ID).Extract()
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if err != nil {
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return "", err
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}
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state.Put("server", s)
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time.Sleep(1 * time.Second)
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return "", errors.New("couldn't determine IP address for server")
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}
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}
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// SSHConfig returns a function that can be used for the SSH communicator
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// config for connecting to the instance created over SSH using the generated
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// private key.
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func SSHConfig(username string) func(multistep.StateBag) (*ssh.ClientConfig, error) {
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return func(state multistep.StateBag) (*ssh.ClientConfig, error) {
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privateKey := state.Get("privateKey").(string)
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signer, err := ssh.ParsePrivateKey([]byte(privateKey))
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if err != nil {
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return nil, fmt.Errorf("Error setting up SSH config: %s", err)
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}
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return &ssh.ClientConfig{
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User: username,
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Auth: []ssh.AuthMethod{
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ssh.PublicKeys(signer),
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},
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}, nil
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}
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}
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func sshAddrFromPool(s *servers.Server, desired string) string {
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// Get all the addresses associated with this server. This
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// was taken directly from Terraform.
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for pool, networkAddresses := range s.Addresses {
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// If we have an SSH interface specified, skip it if no match
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if desired != "" && pool != desired {
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log.Printf(
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"[INFO] Skipping pool %s, doesn't match requested %s",
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pool, desired)
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continue
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}
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elements, ok := networkAddresses.([]interface{})
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if !ok {
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log.Printf(
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"[ERROR] Unknown return type for address field: %#v",
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networkAddresses)
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continue
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}
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for _, element := range elements {
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var addr string
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address := element.(map[string]interface{})
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if address["OS-EXT-IPS:type"] == "floating" {
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addr = address["addr"].(string)
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} else {
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if address["version"].(float64) == 6 {
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addr = fmt.Sprintf("[%s]", address["addr"].(string))
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} else {
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addr = address["addr"].(string)
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}
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}
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if addr != "" {
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log.Printf("[DEBUG] Detected address: %s", addr)
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return addr
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}
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}
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}
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return ""
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}
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