/
aws.go
237 lines (211 loc) · 6.09 KB
/
aws.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
package state
import (
"context"
"encoding/json"
"fmt"
"strings"
"time"
aws_sdk "github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/credentials"
"github.com/aws/aws-sdk-go/aws/credentials/stscreds"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/dynamodb"
"github.com/aws/aws-sdk-go/service/dynamodb/dynamodbattribute"
"github.com/aws/aws-sdk-go/service/dynamodb/dynamodbiface"
"github.com/aws/aws-sdk-go/service/s3"
"github.com/aws/aws-sdk-go/service/s3/s3iface"
"github.com/camptocamp/terraboard/config"
"github.com/camptocamp/terraboard/internal/terraform/states/statefile"
log "github.com/sirupsen/logrus"
)
// AWS is a state provider type, leveraging S3 and DynamoDB
type AWS struct {
svc s3iface.S3API
dynamoSvc dynamodbiface.DynamoDBAPI
bucket string
dynamoTable string
keyPrefix string
fileExtension []string
noLocks bool
noVersioning bool
}
// NewAWS creates an AWS object
func NewAWS(aws config.AWSConfig, bucket config.S3BucketConfig, noLocks, noVersioning bool) *AWS {
if bucket.Bucket == "" {
return nil
}
sess := session.Must(session.NewSession())
awsConfig := aws_sdk.NewConfig()
var creds *credentials.Credentials
if len(aws.APPRoleArn) > 0 {
log.Debugf("Using %s role", aws.APPRoleArn)
creds = stscreds.NewCredentials(sess, aws.APPRoleArn, func(p *stscreds.AssumeRoleProvider) {
if aws.ExternalID != "" {
p.ExternalID = aws_sdk.String(aws.ExternalID)
}
})
} else {
if aws.AccessKey == "" || aws.SecretAccessKey == "" {
log.Fatal("Missing AccessKey or SecretAccessKey for AWS provider. Please check your configuration and retry")
}
creds = credentials.NewStaticCredentials(aws.AccessKey, aws.SecretAccessKey, aws.SessionToken)
}
awsConfig.WithCredentials(creds)
if e := aws.Endpoint; e != "" {
awsConfig.WithEndpoint(e)
}
if e := aws.Region; e != "" {
awsConfig.WithRegion(e)
}
awsConfig.S3ForcePathStyle = &bucket.ForcePathStyle
return &AWS{
svc: s3.New(sess, awsConfig),
bucket: bucket.Bucket,
keyPrefix: bucket.KeyPrefix,
fileExtension: bucket.FileExtension,
dynamoSvc: dynamodbiface.DynamoDBAPI(dynamodb.New(sess, awsConfig)),
dynamoTable: aws.DynamoDBTable,
noLocks: noLocks,
noVersioning: noVersioning,
}
}
// NewAWSCollection instantiate all needed AWS objects configurated by the user and return a slice
func NewAWSCollection(c *config.Config) []*AWS {
var awsInstances []*AWS
for _, aws := range c.AWS {
for _, bucket := range aws.S3 {
if awsInstance := NewAWS(aws, bucket, c.Provider.NoLocks, c.Provider.NoVersioning); awsInstance != nil {
awsInstances = append(awsInstances, awsInstance)
}
}
}
return awsInstances
}
// GetLocks returns a map of locks by State path
func (a *AWS) GetLocks() (locks map[string]LockInfo, err error) {
if a.noLocks {
locks = make(map[string]LockInfo)
return
}
if a.dynamoTable == "" {
err = fmt.Errorf("no dynamoDB table provided, not getting locks")
return
}
results, err := a.dynamoSvc.Scan(&dynamodb.ScanInput{
TableName: &a.dynamoTable,
})
if err != nil {
return locks, err
}
var lockList []Lock
err = dynamodbattribute.UnmarshalListOfMaps(results.Items, &lockList)
if err != nil {
return locks, err
}
locks = make(map[string]LockInfo)
infoPrefix := fmt.Sprintf("%s/", a.bucket)
for _, lock := range lockList {
if lock.Info != "" {
var info LockInfo
err = json.Unmarshal([]byte(lock.Info), &info)
if err != nil {
return locks, err
}
locks[strings.TrimPrefix(info.Path, infoPrefix)] = info
}
}
return
}
// GetStates returns a slice of State files in the S3 bucket
func (a *AWS) GetStates() (states []string, err error) {
truncatedListing := true
var keys []string
log.WithFields(log.Fields{
"bucket": a.bucket,
"prefix": a.keyPrefix,
}).Debug("Listing states from S3")
params := s3.ListObjectsV2Input{
Bucket: aws_sdk.String(a.bucket),
Prefix: &a.keyPrefix,
}
for truncatedListing {
result, err := a.svc.ListObjectsV2(¶ms)
if err != nil {
return states, err
}
for _, obj := range result.Contents {
for _, ext := range a.fileExtension {
if strings.HasSuffix(*obj.Key, ext) {
keys = append(keys, *obj.Key)
}
}
}
params.ContinuationToken = result.NextContinuationToken
truncatedListing = *result.IsTruncated
}
states = keys
log.WithFields(log.Fields{
"bucket": a.bucket,
"prefix": a.keyPrefix,
"states": len(states),
}).Debug("Found states from S3")
return states, nil
}
// GetState retrieves a single State from the S3 bucket
func (a *AWS) GetState(st, versionID string) (sf *statefile.File, err error) {
log.WithFields(log.Fields{
"path": st,
"version_id": versionID,
}).Info("Retrieving state from S3")
input := &s3.GetObjectInput{
Bucket: aws_sdk.String(a.bucket),
Key: aws_sdk.String(st),
}
if versionID != "" && !a.noVersioning {
input.VersionId = &versionID
}
result, err := a.svc.GetObjectWithContext(context.Background(), input)
if err != nil {
log.WithFields(log.Fields{
"path": st,
"version_id": versionID,
"error": err,
}).Error("Error retrieving state from S3")
errObj := make(map[string]string)
errObj["error"] = fmt.Sprintf("State file not found: %v", st)
errObj["details"] = fmt.Sprintf("%v", err)
j, _ := json.Marshal(errObj)
return sf, fmt.Errorf("%s", string(j))
}
defer result.Body.Close()
sf, err = statefile.Read(result.Body)
if sf == nil || err != nil {
return sf, fmt.Errorf("Failed to find state: %v", err)
}
return
}
// GetVersions returns a slice of Version objects
func (a *AWS) GetVersions(state string) (versions []Version, err error) {
versions = []Version{}
if a.noVersioning {
versions = append(versions, Version{
ID: state,
LastModified: time.Now(),
})
return
}
result, err := a.svc.ListObjectVersions(&s3.ListObjectVersionsInput{
Bucket: aws_sdk.String(a.bucket),
Prefix: aws_sdk.String(state),
})
if err != nil {
return
}
for _, v := range result.Versions {
versions = append(versions, Version{
ID: *v.VersionId,
LastModified: *v.LastModified,
})
}
return
}