/
launchInstances.go
181 lines (175 loc) · 5.85 KB
/
launchInstances.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
package amipublisher
import (
"errors"
"strconv"
"time"
"github.com/Cloud-Foundations/Dominator/lib/awsutil"
"github.com/Cloud-Foundations/Dominator/lib/constants"
"github.com/Cloud-Foundations/Dominator/lib/log"
libtags "github.com/Cloud-Foundations/Dominator/lib/tags"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/ec2"
)
func launchInstances(targets awsutil.TargetList, skipList awsutil.TargetList,
imageSearchTags, vpcSearchTags, subnetSearchTags,
securityGroupSearchTags libtags.Tags, instanceType string,
rootVolumeSize uint, sshKeyName string, tags map[string]string,
replaceInstances bool, logger log.Logger) ([]InstanceResult, error) {
if imageSearchTags["Name"] == "" {
return nil, errors.New("no image Name search tag")
}
resultsChannel := make(chan InstanceResult, 1)
numTargets, err := awsutil.ForEachTarget(targets, skipList,
func(awsService *ec2.EC2, account, region string, logger log.Logger) {
instanceId, privateIp, err := launchInstanceInTarget(awsService,
imageSearchTags, vpcSearchTags, subnetSearchTags,
securityGroupSearchTags, instanceType, rootVolumeSize,
sshKeyName, tags, replaceInstances, logger)
if err != nil {
logger.Println(err)
}
resultsChannel <- InstanceResult{
awsutil.Target{account, region},
instanceId,
privateIp,
err,
}
},
logger)
// Collect results.
results := make([]InstanceResult, 0, numTargets)
for i := 0; i < numTargets; i++ {
result := <-resultsChannel
if result.AccountName == "" || result.Region == "" {
continue
}
results = append(results, result)
}
return results, err
}
func launchInstanceInTarget(awsService *ec2.EC2,
imageSearchTags, vpcSearchTags, subnetSearchTags,
securityGroupSearchTags libtags.Tags,
instanceType string, rootVolumeSize uint, sshKeyName string,
tags libtags.Tags, replaceInstances bool,
logger log.Logger) (string, string, error) {
oldInstances, err := getInstances(awsService, tags["Name"])
if err != nil {
return "", "", err
}
if len(oldInstances) > 0 {
if !replaceInstances {
return "", "", nil
}
}
image, err := findImage(awsService, imageSearchTags)
if err != nil {
return "", "", err
}
if image == nil {
// TODO(rgooch): Create bootstrap image (for unpackers only).
return "", "", errors.New("no image found")
}
instance, err := launchInstance(awsService, image, rootVolumeSize, tags,
vpcSearchTags, subnetSearchTags, securityGroupSearchTags, instanceType,
sshKeyName)
if err != nil {
return "", "", err
}
instanceId := aws.StringValue(instance.InstanceId)
privateIp := aws.StringValue(instance.PrivateIpAddress)
logger.Printf("launched: %s with private IP: %s\n", instanceId, privateIp)
err = awsService.WaitUntilInstanceRunning(&ec2.DescribeInstancesInput{
InstanceIds: aws.StringSlice([]string{instanceId}),
})
if err != nil {
if err := libTerminateInstances(awsService, instanceId); err != nil {
logger.Printf("error terminating: %s\n", err)
}
return "", "", err
}
logger.Printf("running: %s, connecting...\n", instanceId)
address := privateIp + ":" + strconv.Itoa(constants.ImageUnpackerPortNumber)
retryUntil := time.Now().Add(time.Minute * 10)
srpcClient, err := connectToUnpacker(address, retryUntil, logger)
if err != nil {
if err := libTerminateInstances(awsService, instanceId); err != nil {
logger.Printf("error terminating: %s\n", err)
}
return "", "", err
}
srpcClient.Close()
if len(oldInstances) > 0 {
ids := getInstanceIds(oldInstances)
if err := libTerminateInstances(awsService, ids...); err != nil {
logger.Printf("error terminating: %s\n", err)
} else {
logger.Println("terminated old instance(s): ", ids)
}
}
return instanceId, privateIp, nil
}
func launchInstancesForImages(resources []Resource,
vpcSearchTags, subnetSearchTags, securityGroupSearchTags libtags.Tags,
instanceType string, rootVolumeSize uint, sshKeyName string,
tags map[string]string, logger log.Logger) ([]InstanceResult, error) {
resultsChannel := make(chan InstanceResult, 1)
err := forEachResource(resources, false,
func(session *session.Session, awsService *ec2.EC2, resource Resource,
logger log.Logger) error {
instanceId, privateIp, err := launchInstanceForImage(awsService,
resource, vpcSearchTags, subnetSearchTags,
securityGroupSearchTags, instanceType, rootVolumeSize,
sshKeyName, tags, logger)
if err != nil {
logger.Println(err)
}
resultsChannel <- InstanceResult{
awsutil.Target{resource.AccountName, resource.Region},
instanceId,
privateIp,
err,
}
return err
},
logger)
// Collect results.
results := make([]InstanceResult, 0, len(resources))
for i := 0; i < len(resources); i++ {
result := <-resultsChannel
if result.AccountName == "" || result.Region == "" {
continue
}
results = append(results, result)
}
return results, err
}
func launchInstanceForImage(awsService *ec2.EC2, resource Resource,
vpcSearchTags, subnetSearchTags,
securityGroupSearchTags libtags.Tags,
instanceType string, rootVolumeSize uint, sshKeyName string,
tags libtags.Tags, logger log.Logger) (string, string, error) {
instance, err := launchInstance(awsService,
&ec2.Image{ImageId: aws.String(resource.AmiId)},
rootVolumeSize,
tags, vpcSearchTags, subnetSearchTags, securityGroupSearchTags,
instanceType, sshKeyName)
if err != nil {
return "", "", err
}
instanceId := aws.StringValue(instance.InstanceId)
privateIp := aws.StringValue(instance.PrivateIpAddress)
logger.Printf("launched: %s with private IP: %s\n", instanceId, privateIp)
if err := createTags(awsService, instanceId, tags); err != nil {
return "", "", nil
}
err = awsService.WaitUntilInstanceRunning(&ec2.DescribeInstancesInput{
InstanceIds: aws.StringSlice([]string{instanceId}),
})
if err != nil {
return "", "", err
}
logger.Printf("running: %s: \n", instanceId)
return instanceId, privateIp, nil
}