DeleteMultipleObjectsNonVersionedBucketTest.cs

// Copyright 2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: MIT-0 (For details, see https://github.com/awsdocs/amazon-s3-developer-guide/blob/master/LICENSE-SAMPLECODE.)

using Amazon.S3;
using Amazon.S3.Model;
using System;
using System.Collections.Generic;
using System.Threading.Tasks;

namespace Amazon.DocSamples.S3
{
    class DeleteMultipleObjectsNonVersionedBucketTest
    {
        private const string bucketName = "*** versioning-enabled bucket name ***";
        // Specify your bucket region (an example region is shown).
        private static readonly RegionEndpoint bucketRegion = RegionEndpoint.USWest2;
        private static IAmazonS3 s3Client;

        public static void Main()
        {
            s3Client = new AmazonS3Client(bucketRegion);
            MultiObjectDeleteAsync().Wait();
        }

        static async Task MultiObjectDeleteAsync()
        {
            // Create sample objects (for subsequent deletion).
            var keysAndVersions = await PutObjectsAsync(3);

            // a. multi-object delete by specifying the key names and version IDs.
            DeleteObjectsRequest multiObjectDeleteRequest = new DeleteObjectsRequest
            {
                BucketName = bucketName,
                Objects = keysAndVersions // This includes the object keys and null version IDs.
            };
            // You can add specific object key to the delete request using the .AddKey.
            // multiObjectDeleteRequest.AddKey("TickerReference.csv", null);
            try
            {
                DeleteObjectsResponse response = await s3Client.DeleteObjectsAsync(multiObjectDeleteRequest);
                Console.WriteLine("Successfully deleted all the {0} items", response.DeletedObjects.Count);
            }
            catch (DeleteObjectsException e)
            {
                PrintDeletionErrorStatus(e);
            }
        }

        private static void PrintDeletionErrorStatus(DeleteObjectsException e)
        {
            // var errorResponse = e.ErrorResponse;
            DeleteObjectsResponse errorResponse = e.Response;
            Console.WriteLine("x {0}", errorResponse.DeletedObjects.Count);

            Console.WriteLine("No. of objects successfully deleted = {0}", errorResponse.DeletedObjects.Count);
            Console.WriteLine("No. of objects failed to delete = {0}", errorResponse.DeleteErrors.Count);

            Console.WriteLine("Printing error data...");
            foreach (DeleteError deleteError in errorResponse.DeleteErrors)
            {
                Console.WriteLine("Object Key: {0}\t{1}\t{2}", deleteError.Key, deleteError.Code, deleteError.Message);
            }
        }

        static async Task<List<KeyVersion>> PutObjectsAsync(int number)
        {
            List<KeyVersion> keys = new List<KeyVersion>();
            for (int i = 0; i < number; i++)
            {
                string key = "ExampleObject-" + new System.Random().Next();
                PutObjectRequest request = new PutObjectRequest
                {
                    BucketName = bucketName,
                    Key = key,
                    ContentBody = "This is the content body!",
                };

                PutObjectResponse response = await s3Client.PutObjectAsync(request);
                KeyVersion keyVersion = new KeyVersion
                {
                    Key = key,
                    // For non-versioned bucket operations, we only need object key.
                    // VersionId = response.VersionId
                };
                keys.Add(keyVersion);
            }
            return keys;
        }
    }
}