public MatrixCalculation GetCalculation(string id)
{
var ms = new MemoryStream();
Task.WaitAll(_client.GetObjectAsync(_bucketName, id, (e) => e.CopyTo(ms)));
return(JsonConvert.DeserializeObject <MatrixCalculation>(Encoding.UTF8.GetString(ms.ToArray())));
}
/// <summary>
/// 获取文件
/// </summary>
/// <param name="bucketName"></param>
/// <param name="objectName"></param>
/// <param name="callback"></param>
/// <param name="cancellationToken"></param>
/// <returns></returns>
public async Task GetObjectAsync(string bucketName, string objectName, Action <Stream> callback, CancellationToken cancellationToken = default)
{
if (string.IsNullOrEmpty(bucketName))
{
throw new ArgumentNullException(nameof(bucketName));
}
if (string.IsNullOrEmpty(objectName))
{
throw new ArgumentNullException(nameof(objectName));
}
await _client.GetObjectAsync(bucketName, objectName, (stream) =>
{
callback(stream);
}, null, cancellationToken);
}
private async static Task CopyObject_Test1(MinioClient minio)
{
Console.Out.WriteLine("Test1: CopyObjectsAsync");
string bucketName = GetRandomName(15);
string objectName = GetRandomName(10);
string destBucketName = GetRandomName(15);
string destObjectName = GetRandomName(10);
string fileName = CreateFile(1 * MB);
await Setup_Test(minio, bucketName);
await Setup_Test(minio, destBucketName);
await minio.PutObjectAsync(bucketName,
objectName,
fileName);
await minio.CopyObjectAsync(bucketName, objectName, destBucketName, destObjectName);
string outFileName = "outFileName";
await minio.GetObjectAsync(destBucketName, destObjectName, outFileName);
File.Delete(outFileName);
await minio.RemoveObjectAsync(bucketName, objectName);
await minio.RemoveObjectAsync(destBucketName, destObjectName);
await TearDown(minio, bucketName);
await TearDown(minio, destBucketName);
File.Delete(fileName);
Console.Out.WriteLine("Test1: CopyObjectsAsync Complete");
}
public async Task <string> RestoreLatestBackupToTempLocation(CancellationToken cancellationToken)
{
Trace.TraceInformation("MinioBackupManager: Download backup async called.");
var lastBackupBlob = (await this.GetBackupBlobs(true)).First();
Trace.TraceInformation("MinioBackupManager: Downloading {0}", lastBackupBlob.Key);
string downloadId = Guid.NewGuid().ToString("N");
string zipPath = Path.Combine(this.PartitionTempDirectory, string.Format("{0}_Backup.zip", downloadId));
await EnsureBucket();
await minio.GetObjectAsync(bucketName, lastBackupBlob.Key, zipPath);
string restorePath = Path.Combine(this.PartitionTempDirectory, downloadId);
ZipFile.ExtractToDirectory(zipPath, restorePath);
FileInfo zipInfo = new FileInfo(zipPath);
zipInfo.Delete();
Trace.TraceInformation("MinioBackupManager: Downloaded {0} in to {1}", lastBackupBlob.Key, restorePath);
return(restorePath);
}
/// <summary>
/// 获取文件
/// </summary>
/// <param name="objectName"></param>
/// <param name="filePath"></param>
/// <param name="cancellationToken"></param>
/// <param name="bucketName"></param>
/// <returns></returns>
public async Task GetObjectAsync(string objectName, string filePath, CancellationToken cancellationToken = default, string bucketName = default)
{
if (bucketName.IsNull())
{
bucketName = _config.BucketName;
}
CheckParams(bucketName, objectName);
string dir = Path.GetDirectoryName(filePath);
if (!string.IsNullOrEmpty(dir) && !Directory.Exists(dir))
{
Directory.CreateDirectory(dir);
}
try
{
// 创建OssClient实例。
var client = new MinioClient(_config.EndPoint, _config.AccessKey, _config.SecretKey);
await client.GetObjectAsync(bucketName, objectName, filePath, null, cancellationToken);
}
catch (Exception ex)
{
_logger.LogError("MinIO OSS获取文件异常：{@ex}", ex);
throw ex;
}
}
// Download object from bucket into local file
public async static Task Run(MinioClient minio,
string bucketName = "my-bucket-name",
string objectName = "my-object-name",
string fileName = "local-filename",
ServerSideEncryption sse = null)
{
try
{
Console.WriteLine("Running example for API: GetObjectAsync");
File.Delete(fileName);
GetObjectArgs args = new GetObjectArgs()
.WithBucket(bucketName)
.WithObject(objectName)
.WithFile(fileName)
.WithServerSideEncryption(sse);
await minio.GetObjectAsync(args).ConfigureAwait(false);
Console.WriteLine($"Downloaded the file {fileName} from bucket {bucketName}");
Console.WriteLine();
}
catch (Exception e)
{
Console.WriteLine($"[Bucket] Exception: {e}");
}
}
public async Task <IActionResult> DownloadUploadFile(string FileName)
{
FileStreamResult fileStreamResult = null;
try
{
await Task.Run(async() =>
{
bool found = await minio.BucketExistsAsync(bucketName);
if (found)
{
//如果找不到对象，将引发异常，
await minio.StatObjectAsync(bucketName, FileName);
//从桶中获取对象的流
await minio.GetObjectAsync(bucketName, FileName,
(stream) =>
{
fileStreamResult = File(stream, "application/octet-stream");
});
}
}
);
return(fileStreamResult);
}
catch (MinioException e)
{
Console.Out.WriteLine("Error occurred: " + e);
}
return(fileStreamResult);
}
public async Task TestInvalidObjectNameError()
{
var badName = new string('A', 260);
var bucketName = Guid.NewGuid().ToString("N");
var minio = new MinioClient("play.min.io", "Q3AM3UQ867SPQQA43P2F", "zuf+tfteSlswRu7BJ86wekitnifILbZam1KYY3TG");
try
{
await minio.MakeBucketAsync(bucketName);
var ex = await Assert.ThrowsExceptionAsync <InvalidObjectNameException>(
() => minio.StatObjectAsync(bucketName, badName));
Assert.AreEqual(ex.Response.Code, "InvalidObjectName");
ex = await Assert.ThrowsExceptionAsync <InvalidObjectNameException>(
() => minio.GetObjectAsync(bucketName, badName, s => { }));
Assert.AreEqual(ex.Response.Code, "InvalidObjectName");
}
finally
{
await minio.RemoveBucketAsync(bucketName);
}
}
// Get object in a bucket
public async static Task Run(MinioClient minio,
string bucketName = "my-bucket-name",
string objectName = "my-object-name",
string versionId = "my-version-id",
string fileName = "my-file-name")
{
try
{
if (string.IsNullOrEmpty(versionId))
{
Console.WriteLine("Version ID is empty or not assigned");
return;
}
Console.WriteLine("Running example for API: GetObjectAsync with Version ID");
GetObjectArgs args = new GetObjectArgs()
.WithBucket(bucketName)
.WithObject(objectName)
.WithVersionId(versionId)
.WithFile(fileName);
await minio.GetObjectAsync(args);
Console.WriteLine($"Downloaded the file {fileName} for object {objectName} with version {versionId} in bucket {bucketName}");
Console.WriteLine();
}
catch (Exception e)
{
Console.WriteLine($"[Bucket] Exception: {e}");
}
}
public T Get(string key)
{
try
{
using (System.IO.MemoryStream ms = new System.IO.MemoryStream())
{
//lock (_lockconnections)
//{
client.GetObjectAsync(this.Bucket, fixKey(key), m => m.CopyTo(ms)).Wait();
//}
if (typeof(T) == typeof(byte[]))
{
return(ms.ToArray() as T);
}
else
{
string json = Encoding.UTF8.GetString(ms.ToArray());
return(Newtonsoft.Json.JsonConvert.DeserializeObject <T>(json));
}
}
}
catch (Exception e)
{
ESTraceLogger.Error($"AWS_S3CacheProvider: get record {fixKey(key)} error {e.Message}", e);
return(null);
}
}
public async Task Get(string objectName, Action <Stream> reader, CancellationToken cancellationToken = default)
{
var tsc = new TaskCompletionSource <Unit>();
await _client.GetObjectAsync(_bucketName, objectName, async s =>
{
try
{
if (cancellationToken.IsCancellationRequested)
{
tsc.SetCanceled();
return;
}
reader(s);
if (cancellationToken.IsCancellationRequested)
{
tsc.SetCanceled();
return;
}
tsc.SetResult(Unit.Default);
}
catch (Exception ex)
{
tsc.SetException(ex);
}
}, cancellationToken : cancellationToken);
await tsc.Task;
}
public async Task TestRetryPolicyOnFailure()
{
var client = new MinioClient("play.min.io",
"Q3AM3UQ867SPQQA43P2F",
"zuf+tfteSlswRu7BJ86wekitnifILbZam1KYY3TG").WithSSL();
int invokeCount = 0;
var retryCount = 3;
client.WithRetryPolicy(
async(callback) =>
{
Exception exception = null;
for (int i = 0; i < retryCount; i++)
{
invokeCount++;
try
{
return(await callback());
}
catch (BucketNotFoundException ex)
{
exception = ex;
}
}
throw exception;
});
await Assert.ThrowsExceptionAsync <BucketNotFoundException>(
() => client.GetObjectAsync(Guid.NewGuid().ToString(), "aa", s => { }));
Assert.AreEqual(invokeCount, retryCount);
}
// Get object in a bucket for a particular offset range. Dotnet SDK currently
// requires both start offset and end
public async static Task Run(MinioClient minio,
string bucketName = "my-bucket-name",
string objectName = "my-object-name",
string fileName = "my-file-name")
{
try
{
Console.Out.WriteLine("Running example for API: GetObjectAsync");
// Check whether the object exists using StatObjectAsync(). If the object is not found,
// StatObjectAsync() will throw an exception.
await minio.StatObjectAsync(bucketName, objectName);
// Get object content starting at byte position 1024 and length of 4096
await minio.GetObjectAsync(bucketName, objectName, 1024L, 4096L,
(stream) =>
{
var fileStream = File.Create(fileName);
stream.CopyTo(fileStream);
fileStream.Dispose();
FileInfo writtenInfo = new FileInfo(fileName);
long file_read_size = writtenInfo.Length;
// Uncommment to print the file on output console
// stream.CopyTo(Console.OpenStandardOutput());
Console.WriteLine("Successfully downloaded object with requested offset and length {0} into file", writtenInfo.Length);
stream.Dispose();
});
Console.Out.WriteLine();
}
catch (Exception e)
{
Console.WriteLine("[Bucket] Exception: {0}", e);
}
}
/// <inheritdoc />
/// <summary>
/// Retrieves a single file from the specified bucket in Minio.
/// </summary>
/// <param name="fileName">A string, name fo the file which is stored.</param>
/// <returns>A Task, of type stream which contains the content of the file retrieved.</returns>
public async Task <Stream> RetrieveFile(string fileName)
{
Log.Information($"Retrieving file: {fileName}, from bucket: {_configurationSettings.Value.BucketName}.");
Stream returnStream = null;
// Check whether the object exists using statObject().
// If the object is not found, statObject() throws an exception,
// else it means that the object exists.
// Execution is successful.
try
{
await _minioClient.StatObjectAsync(_configurationSettings.Value.BucketName, fileName);
}
catch (Exception exception)
{
if (exception.Message.Contains("Not found"))
{
return(null);
}
}
// Get input stream to have content of 'fileName' from 'bucketName'
await _minioClient.GetObjectAsync(_configurationSettings.Value.BucketName, fileName,
(stream) =>
{
stream.CopyTo(returnStream);
});
returnStream.Seek(0, SeekOrigin.Begin);
Log.Information("Successfully retrieved file.");
return(returnStream);
}
async Task <string> GetJournalContent(UserJournal journalItem)
{
if (journalItem == null)
{
return(null);
}
using (MemoryStream outFile = new MemoryStream())
{
var journalIdentifier = journalItem.S3Path;
try
{
var stats = await _minioClient.StatObjectAsync("journal-limpet", journalIdentifier);
await _minioClient.GetObjectAsync("journal-limpet", journalIdentifier,
0, stats.Size,
cb =>
{
cb.CopyTo(outFile);
}
);
outFile.Seek(0, SeekOrigin.Begin);
var journalContent = ZipManager.Unzip(outFile.ToArray());
return(journalContent);
}
catch (ObjectNotFoundException)
{
return(null);
}
}
}
public async Task <ImageInfo> GetAsync(string fileName)
{
await using var memoryStream = new MemoryStream();
var extension = Path.GetExtension(fileName);
if (string.IsNullOrWhiteSpace(extension))
{
throw new ArgumentException("File extension is empty");
}
var exists = await BlobExistsAsync(fileName);
if (!exists)
{
_logger.LogWarning($"Blob {fileName} not exist.");
return(null);
}
await _client.GetObjectAsync(_bucketName, fileName, stream =>
{
stream?.CopyTo(memoryStream);
});
var arr = memoryStream.ToArray();
var fileType = extension.Replace(".", string.Empty);
var imageInfo = new ImageInfo
{
ImageBytes = arr,
ImageExtensionName = fileType
};
return(imageInfo);
}
// Get object in a bucket
public async static Task Run(MinioClient minio,
string bucketName = "my-bucket-name",
string objectName = "my-object-name",
string versionId = "my-version-id",
string fileName = "my-file-name",
string matchEtag = null,
DateTime modifiedSince = default(DateTime))
{
try
{
string withVersionId = (string.IsNullOrEmpty(versionId))?"":" with Version ID";
Console.WriteLine("Running example for API: GetObjectAsync" + withVersionId);
GetObjectArgs args = new GetObjectArgs()
.WithBucket(bucketName)
.WithObject(objectName)
.WithVersionId(versionId)
.WithFile(fileName)
.WithMatchETag(matchEtag)
.WithModifiedSince(modifiedSince);
await minio.GetObjectAsync(args);
Console.WriteLine($"Downloaded the file {fileName} for object {objectName} with given query parameters in bucket {bucketName}");
Console.WriteLine();
}
catch (Exception e)
{
Console.WriteLine($"[Bucket] Exception: {e}");
}
}
public Task GetObjectAsync(string bucketName, string objectName, Action <Stream> callback, CancellationToken cancellationToken = default)
{
if (string.IsNullOrEmpty(bucketName))
{
throw new ArgumentNullException(nameof(bucketName));
}
objectName = FormatObjectName(objectName);
GetObjectArgs args = new GetObjectArgs()
.WithBucket(bucketName)
.WithObject(objectName)
.WithCallbackStream((stream) =>
{
callback(stream);
});
return(_client.GetObjectAsync(args, cancellationToken));
}
private async static Task PutObject_Tester(MinioClient minio, string bucketName, string objectName, string fileName = null, string contentType = "application/octet-stream", long size = 0)
{
try
{
byte[] bs = File.ReadAllBytes(fileName);
System.IO.MemoryStream filestream = new System.IO.MemoryStream(bs);
long file_write_size = filestream.Length;
long file_read_size = 0;
string tempFileName = "tempfiletosavestream";
if (size == 0)
{
size = filestream.Length;
}
if (filestream.Length < (5 * MB))
{
Console.Out.WriteLine("Test1: PutobjectAsync: PutObjectAsync with Stream");
}
else
{
Console.Out.WriteLine("Test1: PutobjectAsync: PutObjectAsync with Stream and MultiPartUpload");
}
await minio.PutObjectAsync(bucketName,
objectName,
filestream,
size,
contentType);
await minio.GetObjectAsync(bucketName, objectName,
(stream) =>
{
var fileStream = File.Create(tempFileName);
stream.CopyTo(fileStream);
fileStream.Dispose();
FileInfo writtenInfo = new FileInfo(tempFileName);
file_read_size = writtenInfo.Length;
Assert.AreEqual(file_read_size, file_write_size);
File.Delete(tempFileName);
});
ObjectStat statObject = await minio.StatObjectAsync(bucketName, objectName);
Assert.IsNotNull(statObject);
Assert.AreEqual(statObject.ObjectName, objectName);
Assert.AreEqual(statObject.Size, file_read_size);
Assert.AreEqual(statObject.ContentType, contentType);
await minio.RemoveObjectAsync(bucketName, objectName);
}
catch (Exception e)
{
Console.WriteLine("[Bucket] Exception: {0}", e);
Assert.Fail();
}
}
/// <summary>
/// 下载特定对象为流
/// </summary>
/// <param name="bucketName">桶名称</param>
/// <param name="objectName">对象名称</param>
/// <returns></returns>
public async Task <Stream> GetObjectAsync(string bucketName, string objectName)
{
try
{
Stream outStream = null;
await _minioClient.StatObjectAsync(bucketName, objectName);
await _minioClient.GetObjectAsync(bucketName, objectName, (stream) =>
{
outStream = stream;
});
return(outStream);
}
catch (Exception ex)
{
throw ex;
}
}
public async Task <byte[]> GetBlob(string bucketName, string blobName)
{
using (var ms = new MemoryStream())
{
return(await _client.GetObjectAsync(bucketName, blobName, (stream) =>
{
stream.CopyTo(ms);
}).ContinueWith(tsk => ms.ToArray()));
}
}
// TODO: OBJECT OPERATIONS
//Downloads an object as a stream.
public Task GetObjectAsStreamAsync(string bucketName, string objectName, Action <Stream> callback, ServerSideEncryption sse = null, CancellationToken cancellationToken = default(CancellationToken))
{
try
{
// Check whether the object exists using statObject().
// If the object is not found, statObject() throws an exception,
// else it means that the object exists.
// Execution is successful.
var taskStatObject = minio.StatObjectAsync(bucketName, objectName);
Task.WaitAll(taskStatObject);
// Get input stream to have content of 'my-objectname' from 'my-bucketname'
var taskGetObject = minio.GetObjectAsync(bucketName, objectName,
callback, sse, cancellationToken);
return(taskGetObject);
}
catch (MinioException e)
{
throw;
}
}
public async Task <byte[]> GetObject(long id)
{
var model = _context.ReportPdfBucket.Find(id);
var result = new byte[] { };
await _minioClient.GetObjectAsync(BUCKET_NAME, $"{model.HashIdEmployee}/{model.FileName}{EXTENSION_FILE}", stream =>
{
result = stream.ReadAsBytes();
});
return(result);
}
private static void ReceiveMessage(ConnectionFactory factory)
{
using (var connection = factory.CreateConnection())
using (var channel = connection.CreateModel())
{
channel.QueueDeclare(queue: "URL",
durable: false,
exclusive: false,
autoDelete: false,
arguments: null);
var consumer = new EventingBasicConsumer(channel);
consumer.Received += async(model, ea) =>
{
var body = ea.Body.ToArray();
var message = Encoding.UTF8.GetString(body);
var split = message.Split(' ');
var urlParseResult = split[0].Split('/');
string bucketName = urlParseResult[3];
string fileName = urlParseResult[4].Split('?')[0];
var filePath = "Incoming/" + fileName;
//Extract incoming file path if exists
if (split.Length > 1)
{
filePath = split[1];
}
Console.WriteLine("Message Received!");
var minioClient = new MinioClient(MinIOEndpoint,
MinIOAccessKey,
MinIOSecretKey
).WithSSL();
// Check whether the object exists using statObject().
await minioClient.StatObjectAsync(bucketName, fileName);
var exePath = Path.GetDirectoryName(System.Reflection
.Assembly.GetExecutingAssembly().CodeBase);
using (FileStream outputFileStream = new FileStream(filePath, FileMode.Create))
{
// Get input stream to have content of 'my-objectname' from 'my-bucketname'
await minioClient.GetObjectAsync(bucketName, fileName,
(stream) =>
{
stream.CopyTo(outputFileStream);
});
}
};
channel.BasicConsume(queue: "URL",
autoAck: true,
consumer: consumer);
Console.WriteLine(" Listening to the Messages!");
Thread.Sleep(10);
}
}
public async Task <byte[]> GetAsync(string bucketName, string objectName)
{
byte[] result = null;
await _client.GetObjectAsync(bucketName, objectName,
stream =>
{
result = stream.ReadAsBytes();
});
return(result);
}
private async Task <(string, string)> GetInputDataFromBucket(MinioClient client, string calcUuid, CancellationToken cancelToken)
{
var vxString = string.Empty;
var ecnString = string.Empty;
var vxFileNameInBucket = PumpConsts.VxFilePrefix + calcUuid + PumpConsts.DataFileExtension;
var ecnFileNameInBucket = PumpConsts.EcnFilePrefix + calcUuid + PumpConsts.DataFileExtension;
await Task.WhenAll(
client.GetObjectAsync(PumpConsts.MinioBucketName, vxFileNameInBucket, x =>
{
vxString = GetString(x);
}, cancellationToken: cancelToken),
client.GetObjectAsync(PumpConsts.MinioBucketName, ecnFileNameInBucket, x =>
{
ecnString = GetString(x);
}, cancellationToken: cancelToken)
);
return(vxString, ecnString);
}
private async static Task CopyObject_Test3(MinioClient minio)
{
Console.Out.WriteLine("Test3: CopyObjectsAsync");
// Test CopyConditions where matching ETag is found
string bucketName = GetRandomName(15);
string objectName = GetRandomName(10);
string destBucketName = GetRandomName(15);
string destObjectName = GetRandomName(10);
string fileName = CreateFile(1 * MB);
await Setup_Test(minio, bucketName);
await Setup_Test(minio, destBucketName);
await minio.PutObjectAsync(bucketName,
objectName,
fileName);
ObjectStat stats = await minio.StatObjectAsync(bucketName, objectName);
CopyConditions conditions = new CopyConditions();
conditions.SetMatchETag(stats.ETag);
try
{
await minio.CopyObjectAsync(bucketName, objectName, destBucketName, destObjectName, conditions);
}
catch (MinioException)
{
Assert.Fail();
}
string outFileName = "outFileName";
ObjectStat dstats = await minio.StatObjectAsync(destBucketName, destObjectName);
Assert.IsNotNull(dstats);
Assert.AreEqual(dstats.ETag, stats.ETag);
Assert.AreEqual(dstats.ObjectName, destObjectName);
await minio.GetObjectAsync(destBucketName, destObjectName, outFileName);
File.Delete(outFileName);
await minio.RemoveObjectAsync(bucketName, objectName);
await minio.RemoveObjectAsync(destBucketName, destObjectName);
await TearDown(minio, bucketName);
await TearDown(minio, destBucketName);
File.Delete(fileName);
Console.Out.WriteLine("Test3: CopyObjectsAsync Complete");
}
private async Task <string> GetObject(string objectName, CancellationToken cancellationToken)
{
var json = "";
await _client.GetObjectAsync(_bucket, objectName, stream =>
{
using (var streamReader = new StreamReader(stream))
{
json = streamReader.ReadToEnd();
}
}, cancellationToken);
return(json);
}
public async Task <IActionResult> GetAttachementFile(
[FromRoute, EmailAddress, Required] string receiverAddress,
[FromRoute, Required] Guid?fileGuid)
{
var memoryStream = new MemoryStream();
await _minio.GetObjectAsync("test", "Exercise-2-Container.zip", stream =>
{
stream.CopyTo(memoryStream);
});
memoryStream.Position = 0;
return(File(memoryStream, "application/octet-stream", "test.zip"));
}
private async Task <bool> ObjectExistsAsync(MinioClient client, string bucket, string objectName)
{
try
{
await client.GetObjectAsync("bucket", objectName, stream => { });
return(true);
}
catch (ObjectNotFoundException e)
{
return(false);
}
}