forked from hashicorp/packer
-
Notifications
You must be signed in to change notification settings - Fork 0
/
step_run_source_instance.go
310 lines (259 loc) · 9.01 KB
/
step_run_source_instance.go
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
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
package common
import (
"context"
"encoding/base64"
"fmt"
"io/ioutil"
"log"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/service/ec2"
retry "github.com/hashicorp/packer/common"
"github.com/hashicorp/packer/helper/communicator"
"github.com/hashicorp/packer/helper/multistep"
"github.com/hashicorp/packer/packer"
"github.com/hashicorp/packer/template/interpolate"
)
type StepRunSourceInstance struct {
AssociatePublicIpAddress bool
AvailabilityZone string
BlockDevices BlockDevices
Comm *communicator.Config
Ctx interpolate.Context
Debug bool
EbsOptimized bool
EnableT2Unlimited bool
ExpectedRootDevice string
IamInstanceProfile string
InstanceInitiatedShutdownBehavior string
InstanceType string
IsRestricted bool
SourceAMI string
SubnetId string
Tags TagMap
UserData string
UserDataFile string
VolumeTags TagMap
instanceId string
}
func (s *StepRunSourceInstance) Run(ctx context.Context, state multistep.StateBag) multistep.StepAction {
ec2conn := state.Get("ec2").(*ec2.EC2)
securityGroupIds := aws.StringSlice(state.Get("securityGroupIds").([]string))
ui := state.Get("ui").(packer.Ui)
userData := s.UserData
if s.UserDataFile != "" {
contents, err := ioutil.ReadFile(s.UserDataFile)
if err != nil {
state.Put("error", fmt.Errorf("Problem reading user data file: %s", err))
return multistep.ActionHalt
}
userData = string(contents)
}
// Test if it is encoded already, and if not, encode it
if _, err := base64.StdEncoding.DecodeString(userData); err != nil {
log.Printf("[DEBUG] base64 encoding user data...")
userData = base64.StdEncoding.EncodeToString([]byte(userData))
}
ui.Say("Launching a source AWS instance...")
image, ok := state.Get("source_image").(*ec2.Image)
if !ok {
state.Put("error", fmt.Errorf("source_image type assertion failed"))
return multistep.ActionHalt
}
s.SourceAMI = *image.ImageId
if s.ExpectedRootDevice != "" && *image.RootDeviceType != s.ExpectedRootDevice {
state.Put("error", fmt.Errorf(
"The provided source AMI has an invalid root device type.\n"+
"Expected '%s', got '%s'.",
s.ExpectedRootDevice, *image.RootDeviceType))
return multistep.ActionHalt
}
var instanceId string
ui.Say("Adding tags to source instance")
if _, exists := s.Tags["Name"]; !exists {
s.Tags["Name"] = "Packer Builder"
}
ec2Tags, err := s.Tags.EC2Tags(s.Ctx, *ec2conn.Config.Region, state)
if err != nil {
err := fmt.Errorf("Error tagging source instance: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
volTags, err := s.VolumeTags.EC2Tags(s.Ctx, *ec2conn.Config.Region, state)
if err != nil {
err := fmt.Errorf("Error tagging volumes: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
runOpts := &ec2.RunInstancesInput{
ImageId: &s.SourceAMI,
InstanceType: &s.InstanceType,
UserData: &userData,
MaxCount: aws.Int64(1),
MinCount: aws.Int64(1),
IamInstanceProfile: &ec2.IamInstanceProfileSpecification{Name: &s.IamInstanceProfile},
BlockDeviceMappings: s.BlockDevices.BuildLaunchDevices(),
Placement: &ec2.Placement{AvailabilityZone: &s.AvailabilityZone},
EbsOptimized: &s.EbsOptimized,
}
if s.EnableT2Unlimited {
creditOption := "unlimited"
runOpts.CreditSpecification = &ec2.CreditSpecificationRequest{CpuCredits: &creditOption}
}
// Collect tags for tagging on resource creation
var tagSpecs []*ec2.TagSpecification
if len(ec2Tags) > 0 {
runTags := &ec2.TagSpecification{
ResourceType: aws.String("instance"),
Tags: ec2Tags,
}
tagSpecs = append(tagSpecs, runTags)
}
if len(volTags) > 0 {
runVolTags := &ec2.TagSpecification{
ResourceType: aws.String("volume"),
Tags: volTags,
}
tagSpecs = append(tagSpecs, runVolTags)
}
// If our region supports it, set tag specifications
if len(tagSpecs) > 0 && !s.IsRestricted {
runOpts.SetTagSpecifications(tagSpecs)
ec2Tags.Report(ui)
volTags.Report(ui)
}
if s.Comm.SSHKeyPairName != "" {
runOpts.KeyName = &s.Comm.SSHKeyPairName
}
if s.SubnetId != "" && s.AssociatePublicIpAddress {
runOpts.NetworkInterfaces = []*ec2.InstanceNetworkInterfaceSpecification{
{
DeviceIndex: aws.Int64(0),
AssociatePublicIpAddress: &s.AssociatePublicIpAddress,
SubnetId: &s.SubnetId,
Groups: securityGroupIds,
DeleteOnTermination: aws.Bool(true),
},
}
} else {
runOpts.SubnetId = &s.SubnetId
runOpts.SecurityGroupIds = securityGroupIds
}
if s.ExpectedRootDevice == "ebs" {
runOpts.InstanceInitiatedShutdownBehavior = &s.InstanceInitiatedShutdownBehavior
}
runResp, err := ec2conn.RunInstances(runOpts)
if err != nil {
err := fmt.Errorf("Error launching source instance: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
instanceId = *runResp.Instances[0].InstanceId
// Set the instance ID so that the cleanup works properly
s.instanceId = instanceId
ui.Message(fmt.Sprintf("Instance ID: %s", instanceId))
ui.Say(fmt.Sprintf("Waiting for instance (%v) to become ready...", instanceId))
describeInstance := &ec2.DescribeInstancesInput{
InstanceIds: []*string{aws.String(instanceId)},
}
if err := ec2conn.WaitUntilInstanceRunningWithContext(ctx, describeInstance); err != nil {
err := fmt.Errorf("Error waiting for instance (%s) to become ready: %s", instanceId, err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
r, err := ec2conn.DescribeInstances(describeInstance)
if err != nil || len(r.Reservations) == 0 || len(r.Reservations[0].Instances) == 0 {
err := fmt.Errorf("Error finding source instance.")
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
instance := r.Reservations[0].Instances[0]
if s.Debug {
if instance.PublicDnsName != nil && *instance.PublicDnsName != "" {
ui.Message(fmt.Sprintf("Public DNS: %s", *instance.PublicDnsName))
}
if instance.PublicIpAddress != nil && *instance.PublicIpAddress != "" {
ui.Message(fmt.Sprintf("Public IP: %s", *instance.PublicIpAddress))
}
if instance.PrivateIpAddress != nil && *instance.PrivateIpAddress != "" {
ui.Message(fmt.Sprintf("Private IP: %s", *instance.PrivateIpAddress))
}
}
state.Put("instance", instance)
// If we're in a region that doesn't support tagging on instance creation,
// do that now.
if s.IsRestricted {
ec2Tags.Report(ui)
// Retry creating tags for about 2.5 minutes
err = retry.Retry(0.2, 30, 11, func(_ uint) (bool, error) {
_, err := ec2conn.CreateTags(&ec2.CreateTagsInput{
Tags: ec2Tags,
Resources: []*string{instance.InstanceId},
})
if err == nil {
return true, nil
}
if awsErr, ok := err.(awserr.Error); ok {
if awsErr.Code() == "InvalidInstanceID.NotFound" {
return false, nil
}
}
return true, err
})
if err != nil {
err := fmt.Errorf("Error tagging source instance: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
// Now tag volumes
volumeIds := make([]*string, 0)
for _, v := range instance.BlockDeviceMappings {
if ebs := v.Ebs; ebs != nil {
volumeIds = append(volumeIds, ebs.VolumeId)
}
}
if len(volumeIds) > 0 && s.VolumeTags.IsSet() {
ui.Say("Adding tags to source EBS Volumes")
volumeTags, err := s.VolumeTags.EC2Tags(s.Ctx, *ec2conn.Config.Region, state)
if err != nil {
err := fmt.Errorf("Error tagging source EBS Volumes on %s: %s", *instance.InstanceId, err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
volumeTags.Report(ui)
_, err = ec2conn.CreateTags(&ec2.CreateTagsInput{
Resources: volumeIds,
Tags: volumeTags,
})
if err != nil {
err := fmt.Errorf("Error tagging source EBS Volumes on %s: %s", *instance.InstanceId, err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
}
}
return multistep.ActionContinue
}
func (s *StepRunSourceInstance) Cleanup(state multistep.StateBag) {
ec2conn := state.Get("ec2").(*ec2.EC2)
ui := state.Get("ui").(packer.Ui)
// Terminate the source instance if it exists
if s.instanceId != "" {
ui.Say("Terminating the source AWS instance...")
if _, err := ec2conn.TerminateInstances(&ec2.TerminateInstancesInput{InstanceIds: []*string{&s.instanceId}}); err != nil {
ui.Error(fmt.Sprintf("Error terminating instance, may still be around: %s", err))
return
}
if err := WaitUntilInstanceTerminated(aws.BackgroundContext(), ec2conn, s.instanceId); err != nil {
ui.Error(err.Error())
}
}
}