1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
package common
import (
"context"
"fmt"
"log"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/service/ec2"
"github.com/hashicorp/packer/helper/multistep"
"github.com/hashicorp/packer/packer"
)
type StepCreateEncryptedAMICopy struct {
image *ec2.Image
KeyID string
EncryptBootVolume bool
Name string
AMIMappings []BlockDevice
}
func (s *StepCreateEncryptedAMICopy) Run(ctx context.Context, state multistep.StateBag) multistep.StepAction {
ec2conn := state.Get("ec2").(*ec2.EC2)
ui := state.Get("ui").(packer.Ui)
kmsKeyId := s.KeyID
// Encrypt boot not set, so skip step
if !s.EncryptBootVolume {
if kmsKeyId != "" {
log.Printf("Ignoring KMS Key ID: %s, encrypted=false", kmsKeyId)
}
return multistep.ActionContinue
}
ui.Say("Creating Encrypted AMI Copy")
amis := state.Get("amis").(map[string]string)
var region, id string
if amis != nil {
for region, id = range amis {
break // There is only ever one region:ami pair in this map
}
}
ui.Say(fmt.Sprintf("Copying AMI: %s(%s)", region, id))
if kmsKeyId != "" {
ui.Say(fmt.Sprintf("Encrypting with KMS Key ID: %s", kmsKeyId))
}
copyOpts := &ec2.CopyImageInput{
Name: &s.Name, // Try to overwrite existing AMI
SourceImageId: aws.String(id),
SourceRegion: aws.String(region),
Encrypted: aws.Bool(true),
KmsKeyId: aws.String(kmsKeyId),
}
copyResp, err := ec2conn.CopyImage(copyOpts)
if err != nil {
err := fmt.Errorf("Error copying AMI: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
// Wait for the copy to become ready
ui.Say("Waiting for AMI copy to become ready...")
if err := WaitUntilAMIAvailable(ctx, ec2conn, *copyResp.ImageId); err != nil {
err := fmt.Errorf("Error waiting for AMI Copy: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
// Get the encrypted AMI image, we need the new snapshot id's
encImagesResp, err := ec2conn.DescribeImages(&ec2.DescribeImagesInput{ImageIds: []*string{aws.String(*copyResp.ImageId)}})
if err != nil {
err := fmt.Errorf("Error searching for AMI: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
encImage := encImagesResp.Images[0]
var encSnapshots []string
for _, blockDevice := range encImage.BlockDeviceMappings {
if blockDevice.Ebs != nil && blockDevice.Ebs.SnapshotId != nil {
encSnapshots = append(encSnapshots, *blockDevice.Ebs.SnapshotId)
}
}
// Get the unencrypted AMI image
unencImagesResp, err := ec2conn.DescribeImages(&ec2.DescribeImagesInput{ImageIds: []*string{aws.String(id)}})
if err != nil {
err := fmt.Errorf("Error searching for AMI: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
unencImage := unencImagesResp.Images[0]
// Remove unencrypted AMI
ui.Say("Deregistering unencrypted AMI")
deregisterOpts := &ec2.DeregisterImageInput{ImageId: aws.String(id)}
if _, err := ec2conn.DeregisterImage(deregisterOpts); err != nil {
ui.Error(fmt.Sprintf("Error deregistering AMI, may still be around: %s", err))
return multistep.ActionHalt
}
// Remove associated unencrypted snapshot(s)
ui.Say("Deleting unencrypted snapshots")
snapshots := state.Get("snapshots").(map[string][]string)
OuterLoop:
for _, blockDevice := range unencImage.BlockDeviceMappings {
if blockDevice.Ebs != nil && blockDevice.Ebs.SnapshotId != nil {
// If this packer run didn't create it, then don't delete it
for _, origDevice := range s.AMIMappings {
if origDevice.SnapshotId == *blockDevice.Ebs.SnapshotId {
ui.Message(fmt.Sprintf("Keeping Snapshot ID: %s", *blockDevice.Ebs.SnapshotId))
continue OuterLoop
}
}
ui.Message(fmt.Sprintf("Deleting Snapshot ID: %s", *blockDevice.Ebs.SnapshotId))
deleteSnapOpts := &ec2.DeleteSnapshotInput{
SnapshotId: aws.String(*blockDevice.Ebs.SnapshotId),
}
if _, err := ec2conn.DeleteSnapshot(deleteSnapOpts); err != nil {
ui.Error(fmt.Sprintf("Error deleting snapshot, may still be around: %s", err))
return multistep.ActionHalt
}
}
}
// Replace original AMI ID with Encrypted ID in state
amis[region] = *copyResp.ImageId
snapshots[region] = encSnapshots
state.Put("amis", amis)
state.Put("snapshots", snapshots)
imagesResp, err := ec2conn.DescribeImages(&ec2.DescribeImagesInput{ImageIds: []*string{copyResp.ImageId}})
if err != nil {
err := fmt.Errorf("Error searching for AMI: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
s.image = imagesResp.Images[0]
return multistep.ActionContinue
}
func (s *StepCreateEncryptedAMICopy) Cleanup(state multistep.StateBag) {
if s.image == nil {
return
}
_, cancelled := state.GetOk(multistep.StateCancelled)
_, halted := state.GetOk(multistep.StateHalted)
if !cancelled && !halted {
return
}
ec2conn := state.Get("ec2").(*ec2.EC2)
ui := state.Get("ui").(packer.Ui)
ui.Say("Deregistering the AMI because cancellation or error...")
deregisterOpts := &ec2.DeregisterImageInput{ImageId: s.image.ImageId}
if _, err := ec2conn.DeregisterImage(deregisterOpts); err != nil {
ui.Error(fmt.Sprintf("Error deregistering AMI, may still be around: %s", err))
return
}
}
|
