/
cf_s3bucket_cleanup.go
153 lines (137 loc) · 3.47 KB
/
cf_s3bucket_cleanup.go
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package main
import (
"flag"
"strings"
"time"
"github.com/allanliu/easylogger"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/cloudformation"
"github.com/aws/aws-sdk-go/service/cloudformation/cloudformationiface"
"github.com/aws/aws-sdk-go/service/s3"
"github.com/aws/aws-sdk-go/service/s3/s3iface"
)
var (
awsRegion = flag.String(
"aws-region",
"us-east-1",
"AWS region",
)
bucketFilter = flag.String(
"bucket-filter",
"exhibitors3bucket",
"Search critieria for buckets that fall under CF",
)
)
type cfS3BucketCleanup struct {
cfSVC cloudformationiface.CloudFormationAPI
s3SVC s3iface.S3API
stacks []*cloudformation.StackSummary
bucketFilter string
}
func getSessionConfigs() (*session.Session, *aws.Config) {
return session.New(), &aws.Config{Region: awsRegion}
}
func (c *cfS3BucketCleanup) getAllCfStackNames() {
params := &cloudformation.ListStacksInput{
StackStatusFilter: []*string{
aws.String(cloudformation.StackStatusCreateComplete),
},
}
resp, err := c.cfSVC.ListStacks(params)
easylogger.LogFatal(err)
c.stacks = resp.StackSummaries
}
func checkStackBucketbyName(bucketName string, stackName string) bool {
return strings.Contains(bucketName, stackName)
}
func isCloudformationBucket(bucketName string, bucketFilter string) bool {
return strings.Contains(bucketName, bucketFilter)
}
func checkStackBucketbyDate(bucketDate time.Time, stackDate time.Time) bool {
diff := stackDate.Sub(bucketDate).Seconds()
return diff < 60 && diff > -60
}
func (c *cfS3BucketCleanup) isBucketDeletable(bucket *s3.Bucket) bool {
for _, stack := range c.stacks {
if checkStackBucketbyName(*bucket.Name, *stack.StackName) &&
checkStackBucketbyDate(
*bucket.CreationDate,
*stack.CreationTime,
) {
return false
}
}
return true
}
func (c *cfS3BucketCleanup) getBucketContents(bucket *s3.Bucket) []*s3.Object {
resp, err := c.s3SVC.ListObjects(
&s3.ListObjectsInput{
Bucket: bucket.Name,
},
)
easylogger.LogFatal(err)
return resp.Contents
}
func getObjectIDStruct(objects []*s3.Object) []*s3.ObjectIdentifier {
var result []*s3.ObjectIdentifier
for _, object := range objects {
result = append(
result,
&s3.ObjectIdentifier{
Key: object.Key,
},
)
}
return result
}
func isBucketEmpty(objects []*s3.Object) bool {
return len(objects) <= 0
}
func (c *cfS3BucketCleanup) emptyBucket(
bucket *s3.Bucket,
objects []*s3.Object,
) []*s3.Error {
resp, err := c.s3SVC.DeleteObjects(
&s3.DeleteObjectsInput{
Bucket: bucket.Name,
Delete: &s3.Delete{
Objects: getObjectIDStruct(objects),
},
},
)
easylogger.LogFatal(err)
if resp.Errors == nil {
return []*s3.Error{}
}
return resp.Errors
}
func (c *cfS3BucketCleanup) removeUnusedCFBuckets() []*s3.Error {
var (
errors = []*s3.Error{}
objects []*s3.Object
)
resp, err := c.s3SVC.ListBuckets(&s3.ListBucketsInput{})
easylogger.LogFatal(err)
for _, bucket := range resp.Buckets {
if isCloudformationBucket(*bucket.Name, c.bucketFilter) &&
c.isBucketDeletable(bucket) {
easylogger.Log("This bucket is to be deleted: ", *bucket.Name)
objects = c.getBucketContents(bucket)
if !isBucketEmpty(objects) {
errs := c.emptyBucket(bucket, objects)
if len(errs) > 0 {
errors = append(errors, errs...)
continue
}
}
_, err := c.s3SVC.DeleteBucket(
&s3.DeleteBucketInput{
Bucket: bucket.Name,
},
)
easylogger.LogFatal(err)
}
}
return errors
}