1	/*
     2	Copyright 2011 The Perkeep Authors
     3	
     4	Licensed under the Apache License, Version 2.0 (the "License");
     5	you may not use this file except in compliance with the License.
     6	You may obtain a copy of the License at
     7	
     8	     http://www.apache.org/licenses/LICENSE-2.0
     9	
    10	Unless required by applicable law or agreed to in writing, software
    11	distributed under the License is distributed on an "AS IS" BASIS,
    12	WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13	See the License for the specific language governing permissions and
    14	limitations under the License.
    15	*/
    16	
    17	package s3
    18	
    19	import (
    20		"context"
    21	
    22		"github.com/aws/aws-sdk-go/aws"
    23		"github.com/aws/aws-sdk-go/service/s3"
    24		"github.com/aws/aws-sdk-go/service/s3/s3manager"
    25		"perkeep.org/pkg/blob"
    26	)
    27	
    28	// maxDeleteBatch is the maximum value allowed for the s3 'DeleteObjects' call
    29	const maxDeleteBatch = 1000
    30	
    31	func (sto *s3Storage) RemoveBlobs(ctx context.Context, blobs []blob.Ref) error {
    32		toDelete := make([]s3manager.BatchDeleteObject, 0, len(blobs))
    33		for _, blob := range blobs {
    34			toDelete = append(toDelete, s3manager.BatchDeleteObject{
    35				Object: &s3.DeleteObjectInput{
    36					Bucket: &sto.bucket,
    37					Key:    aws.String(sto.dirPrefix + blob.String()),
    38				},
    39			})
    40		}
    41	
    42		batchDeleter := s3manager.NewBatchDeleteWithClient(sto.client)
    43		batchDeleter.BatchSize = maxDeleteBatch
    44	
    45		return batchDeleter.Delete(ctx, &s3manager.DeleteObjectsIterator{
    46			Objects: toDelete,
    47		})
    48	}