CopyObjectMetadata.cs

/*
 * MinIO .NET Library for Amazon S3 Compatible Cloud Storage, (C) 2018-2021 MinIO, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

using Minio.DataModel;
using Minio.DataModel.Args;

namespace Minio.Examples.Cases;

internal static class CopyObjectMetadata
{
    // Copy object from one bucket to another
    public static async Task Run(IMinioClient minio,
        string fromBucketName = "from-bucket-name",
        string fromObjectName = "from-object-name",
        string destBucketName = "dest-bucket",
        string destObjectName = "to-object-name")
    {
        try
        {
            Console.WriteLine("Running example for API: CopyObjectAsync");

            // Optionally pass copy conditions to replace metadata on destination object with custom metadata
            var copyCond = new CopyConditions();
            copyCond.SetReplaceMetadataDirective();

            // set custom metadata
            var metadata = new Dictionary<string, string>
                (StringComparer.Ordinal) { { "Content-Type", "application/css" }, { "Mynewkey", "my-new-value" } };

            var copySourceObjectArgs = new CopySourceObjectArgs()
                .WithBucket(fromBucketName)
                .WithObject(fromObjectName)
                .WithCopyConditions(copyCond);
            var copyObjectArgs = new CopyObjectArgs()
                .WithBucket(destBucketName)
                .WithObject(destObjectName)
                .WithHeaders(metadata)
                .WithCopyObjectSource(copySourceObjectArgs);
            await minio.CopyObjectAsync(copyObjectArgs).ConfigureAwait(false);

            Console.WriteLine(
                $"Copied object {fromObjectName} from bucket {fromBucketName} to bucket {destBucketName}");
            Console.WriteLine();
        }
        catch (Exception e)
        {
            Console.WriteLine($"[Bucket]  Exception: {e}");
        }
    }
}