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deleteBuckets.go
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/
deleteBuckets.go
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package main
import (
"fmt"
"log"
"sync"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/service/s3"
)
type bucketDeleteStatus struct {
friendlyName string
name string
region string
deleted bool
err error
}
func (b *broker) deleteBuckets(buckets map[string]Bucket) (map[string]Bucket, []error) {
var (
delWG sync.WaitGroup
)
deletedBuckets := make(map[string]Bucket)
statusChan := make(chan bucketDeleteStatus)
delWG.Add(len(buckets))
go func() {
delWG.Wait()
close(statusChan)
}()
//Delete buckets concurrently. Sequentially is too slow for more than about 6 buckets.
for friendlyName, bucket := range buckets {
go func(friendlyName string, bucket Bucket) {
defer delWG.Done()
log.Printf("Deleting bucket %s\n", bucket.name)
status := bucketDeleteStatus{
friendlyName: friendlyName,
region: bucket.region,
name: bucket.name,
deleted: true,
err: nil,
}
if _, err := b.s3client.DeleteBucket(bucket.name); err != nil {
if awsErr, ok := err.(awserr.Error); ok {
if awsErr.Code() == s3.ErrCodeNoSuchBucket {
statusChan <- status
return
}
}
status.deleted = false
status.err = err
statusChan <- status
return
}
statusChan <- status
return
}(friendlyName, bucket)
}
var errors []error
for status := range statusChan {
if status.err != nil {
errors = append(errors, fmt.Errorf("Error deleting bucket %s: %s", status.name, status.err.Error()))
}
if status.deleted {
deletedBuckets[status.friendlyName] = Bucket{
name: status.name,
region: status.region,
}
}
}
if len(errors) > 0 {
return deletedBuckets, errors
}
return deletedBuckets, nil
}