140 lines
3.8 KiB
Go
140 lines
3.8 KiB
Go
package ecs
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import (
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"fmt"
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"io/ioutil"
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"os"
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"runtime"
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"github.com/denverdino/aliyungo/common"
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"github.com/denverdino/aliyungo/ecs"
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"github.com/hashicorp/packer/packer"
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"github.com/mitchellh/multistep"
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)
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type StepConfigAlicloudKeyPair struct {
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Debug bool
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SSHAgentAuth bool
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DebugKeyPath string
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TemporaryKeyPairName string
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KeyPairName string
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PrivateKeyFile string
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RegionId string
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keyName string
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}
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func (s *StepConfigAlicloudKeyPair) Run(state multistep.StateBag) multistep.StepAction {
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ui := state.Get("ui").(packer.Ui)
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if s.PrivateKeyFile != "" {
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ui.Say("Using existing SSH private key")
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privateKeyBytes, err := ioutil.ReadFile(s.PrivateKeyFile)
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if err != nil {
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state.Put("error", fmt.Errorf(
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"Error loading configured private key file: %s", err))
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return multistep.ActionHalt
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}
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state.Put("keyPair", s.KeyPairName)
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state.Put("privateKey", string(privateKeyBytes))
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return multistep.ActionContinue
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}
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if s.SSHAgentAuth && s.KeyPairName == "" {
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ui.Say("Using SSH Agent with key pair in source image")
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return multistep.ActionContinue
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}
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if s.SSHAgentAuth && s.KeyPairName != "" {
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ui.Say(fmt.Sprintf("Using SSH Agent for existing key pair %s", s.KeyPairName))
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state.Put("keyPair", s.KeyPairName)
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return multistep.ActionContinue
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}
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if s.TemporaryKeyPairName == "" {
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ui.Say("Not using temporary keypair")
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state.Put("keyPair", "")
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return multistep.ActionContinue
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}
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client := state.Get("client").(*ecs.Client)
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ui.Say(fmt.Sprintf("Creating temporary keypair: %s", s.TemporaryKeyPairName))
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keyResp, err := client.CreateKeyPair(&ecs.CreateKeyPairArgs{
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KeyPairName: s.TemporaryKeyPairName,
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RegionId: common.Region(s.RegionId),
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})
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if err != nil {
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state.Put("error", fmt.Errorf("Error creating temporary keypair: %s", err))
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return multistep.ActionHalt
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}
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// Set the keyname so we know to delete it later
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s.keyName = s.TemporaryKeyPairName
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// Set some state data for use in future steps
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state.Put("keyPair", s.keyName)
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state.Put("privateKey", keyResp.PrivateKeyBody)
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// If we're in debug mode, output the private key to the working
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// directory.
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if s.Debug {
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ui.Message(fmt.Sprintf("Saving key for debug purposes: %s", s.DebugKeyPath))
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f, err := os.Create(s.DebugKeyPath)
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if err != nil {
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state.Put("error", fmt.Errorf("Error saving debug key: %s", err))
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return multistep.ActionHalt
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}
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defer f.Close()
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// Write the key out
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if _, err := f.Write([]byte(keyResp.PrivateKeyBody)); err != nil {
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state.Put("error", fmt.Errorf("Error saving debug key: %s", err))
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return multistep.ActionHalt
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}
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// Chmod it so that it is SSH ready
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if runtime.GOOS != "windows" {
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if err := f.Chmod(0600); err != nil {
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state.Put("error", fmt.Errorf("Error setting permissions of debug key: %s", err))
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return multistep.ActionHalt
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}
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}
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}
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return multistep.ActionContinue
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}
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func (s *StepConfigAlicloudKeyPair) Cleanup(state multistep.StateBag) {
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// If no key name is set, then we never created it, so just return
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// If we used an SSH private key file, do not go about deleting
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// keypairs
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if s.PrivateKeyFile != "" || (s.KeyPairName == "" && s.keyName == "") {
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return
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}
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client := state.Get("client").(*ecs.Client)
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ui := state.Get("ui").(packer.Ui)
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// Remove the keypair
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ui.Say("Deleting temporary keypair...")
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err := client.DeleteKeyPairs(&ecs.DeleteKeyPairsArgs{
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RegionId: common.Region(s.RegionId),
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KeyPairNames: "[\"" + s.keyName + "\"]",
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})
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if err != nil {
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ui.Error(fmt.Sprintf(
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"Error cleaning up keypair. Please delete the key manually: %s", s.keyName))
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}
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// Also remove the physical key if we're debugging.
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if s.Debug {
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if err := os.Remove(s.DebugKeyPath); err != nil {
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ui.Error(fmt.Sprintf(
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"Error removing debug key '%s': %s", s.DebugKeyPath, err))
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}
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}
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}
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