Alex Csengery
3c325fd008
This feature allows you to specify the n latest backups to keep in the bucket.
53 lines
1.3 KiB
Go
53 lines
1.3 KiB
Go
package pruner
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import (
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"backup-tool/helpers"
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"context"
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"github.com/minio/minio-go/v7"
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"log"
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"sort"
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)
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func PruneFiles(bucket, endpoint string, keep int) error {
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ctx := context.Background()
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accessKeyID, secretAccessKey, err := helpers.GetCredentials()
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if err != nil {
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return err
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}
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client, err := helpers.CreateClient(accessKeyID, secretAccessKey, endpoint)
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if err != nil {
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return err
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}
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err = helpers.VerifyBucket(client, ctx, bucket)
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if err != nil {
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return err
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}
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var objects []minio.ObjectInfo
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for obj := range client.ListObjects(ctx, bucket, minio.ListObjectsOptions{}) {
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objects = append(objects, obj)
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}
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if len(objects) < keep {
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return nil
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}
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sort.Sort(BucketObjects(objects)) // last modified object will be at position 0
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for _, object := range objects[keep:] {
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err := client.RemoveObject(ctx, bucket, object.Key, minio.RemoveObjectOptions{})
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if err != nil {
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log.Printf("error deleting object %q: %s", object.Key, err.Error())
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} else {
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log.Printf("deleted object %q", object.Key)
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}
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}
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return nil
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}
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type BucketObjects []minio.ObjectInfo
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func (b BucketObjects) Len() int { return len(b) }
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func (b BucketObjects) Swap(i, j int) { b[i], b[j] = b[j], b[i] }
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func (b BucketObjects) Less(i, j int) bool { return b[i].LastModified.After(b[j].LastModified) } // return newest object first in list
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