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66 lines
2.8 KiB
66 lines
2.8 KiB
/*
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* MinIO .NET Library for Amazon S3 Compatible Cloud Storage, (C) 2017-2021 MinIO, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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using Minio.DataModel.Args;
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namespace Minio.Examples.Cases;
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internal static class GetPartialObject
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{
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// Get object in a bucket for a particular offset range. Dotnet SDK currently
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// requires both start offset and end
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public static async Task Run(IMinioClient minio,
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string bucketName = "my-bucket-name",
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string objectName = "my-object-name",
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string fileName = "my-file-name")
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{
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try
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{
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Console.WriteLine("Running example for API: GetObjectAsync");
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// Check whether the object exists using StatObjectAsync(). If the object is not found,
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// StatObjectAsync() will throw an exception.
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var statObjectArgs = new StatObjectArgs()
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.WithBucket(bucketName)
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.WithObject(objectName);
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_ = await minio.StatObjectAsync(statObjectArgs).ConfigureAwait(false);
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// Get object content starting at byte position 1024 and length of 4096
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var getObjectArgs = new GetObjectArgs()
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.WithBucket(bucketName)
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.WithObject(objectName)
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.WithOffsetAndLength(1024L, 4096L)
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.WithCallbackStream(async (stream, cancellationToken) =>
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{
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var fileStream = File.Create(fileName);
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await stream.CopyToAsync(fileStream, cancellationToken).ConfigureAwait(false);
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await fileStream.DisposeAsync().ConfigureAwait(false);
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var writtenInfo = new FileInfo(fileName);
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var file_read_size = writtenInfo.Length;
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// Uncomment to print the file on output console
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// stream.CopyTo(Console.OpenStandardOutput());
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Console.WriteLine(
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$"Successfully downloaded object with requested offset and length {writtenInfo.Length} into file");
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stream.Dispose();
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});
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_ = await minio.GetObjectAsync(getObjectArgs).ConfigureAwait(false);
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Console.WriteLine();
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}
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catch (Exception e)
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{
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Console.WriteLine($"[Bucket] Exception: {e}");
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}
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}
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}
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