public static async Task MainSync(string key, string filePath)
{
// create the AWS S3 client
ECSS3Client s3 = ECSS3Factory.getS3Client();
// part size for chunking in multi-part
long partSize = 1024 * 1024 * 8; // 8 MB
// list of upload part response objects for each part that is uploaded
IEnumerable <PartETag> partETags = new List <PartETag>();
// Step 1: Initialize
InitiateMultipartUploadRequest initRequest = new InitiateMultipartUploadRequest()
{
BucketName = ECSS3Factory.S3_BUCKET,
Key = key,
};
// call initialize method -obtain upload id to be used for subsequent parts.
InitiateMultipartUploadResponse initResponse = s3.InitiateMultipartUpload(initRequest);
// get the file and file length
fileSize = new FileInfo(filePath).Length;
Console.WriteLine(string.Format("Starting multi-part upload for object {0}/{1} with file path {2} and size {3} in {4} MB size chunks",
ECSS3Factory.S3_BUCKET, key, filePath, Convert.ToString(fileSize), partSize / 1024 / 1024));
try
{
// STEP 2: generate list of parts to be uploaded
long filePosition = 0;
// the parts list representing each chunk to be uploaded
List <UploadPartRequest> parts = new List <UploadPartRequest>();
for (int i = 1; filePosition < fileSize; i++)
{
// get the size of the chunk. Note - the last part can be less than the chunk size
partSize = Math.Min(partSize, (fileSize - filePosition));
// create request to upload a part
UploadPartRequest uploadRequest = new UploadPartRequest()
{
BucketName = ECSS3Factory.S3_BUCKET,
Key = key,
UploadId = initResponse.UploadId,
PartNumber = i,
FilePosition = filePosition,
FilePath = filePath,
PartSize = partSize
};
parts.Add(uploadRequest);
filePosition = filePosition += partSize;
}
// generate query to simultaneously upload chunks
IEnumerable <Task <PartETag> > uploadTasksQuery =
from part in parts select ProcessChunk(part);
// execute the upload query
List <Task <PartETag> > uploadTasks = uploadTasksQuery.ToList();
//
// Can do other work here while waiting ...
Console.WriteLine("Waiting for completion of multi-part upload");
//
//
// wait here for the query to complete
partETags = await Task.WhenAll(uploadTasks);
// STEP 3: complete the mpu
CompleteMultipartUploadRequest compRequest = new CompleteMultipartUploadRequest()
{
BucketName = ECSS3Factory.S3_BUCKET,
Key = key,
UploadId = initResponse.UploadId,
PartETags = partETags.ToList()
};
s3.CompleteMultipartUpload(compRequest);
}
catch (Exception e)
{
s3.AbortMultipartUpload(new AbortMultipartUploadRequest()
{
BucketName = ECSS3Factory.S3_BUCKET,
Key = key,
UploadId = initResponse.UploadId
});
Console.WriteLine(e);
}
}
public static void Main(string[] args)
{
// create the ECS S3 client
ECSS3Client s3 = ECSS3Factory.getS3Client();
// retrieve the object key/value from user
Console.Write("Enter the object key: ");
string key = Console.ReadLine();
Console.Write("Enter the file location: ");
string filePath = Console.ReadLine();
// grab the start time of upload
DateTime startDate = DateTime.Now;
// part size for chunking in multi-part
long partSize = 1024 * 1024 * 8; // 2 MB
// list of upload part response objects for each part that is uploaded
List <PartETag> partETags = new List <PartETag>();
// Step 1: Initialize
InitiateMultipartUploadRequest initRequest = new InitiateMultipartUploadRequest()
{
BucketName = ECSS3Factory.S3_BUCKET,
Key = key,
};
InitiateMultipartUploadResponse initResponse = s3.InitiateMultipartUpload(initRequest);
// get the file and file length
long contentLength = new FileInfo(filePath).Length;
Console.WriteLine(string.Format("Starting multi-part upload for object {0}/{1} with file path {2} and size {3} in {4} MB size chunks",
ECSS3Factory.S3_BUCKET, key, filePath, Convert.ToString(contentLength), partSize / 1024 / 1024));
try
{
// Step 2: Upload parts
long filePosition = 0;
for (int i = 1; filePosition < contentLength; i++)
{
// get the size of the chunk. Note - the last part can be less than the chunk size
partSize = Math.Min(partSize, (contentLength - filePosition));
Console.WriteLine(string.Format("Sending chunk {0} starting at position {1}", i, filePosition));
// create request to upload a part
UploadPartRequest uploadRequest = new UploadPartRequest()
{
BucketName = ECSS3Factory.S3_BUCKET,
Key = key,
UploadId = initResponse.UploadId,
PartNumber = i,
FilePosition = filePosition,
FilePath = filePath,
PartSize = partSize
};
UploadPartResponse partResponse = s3.UploadPart(uploadRequest);
PartETag eTagPart = new PartETag(partResponse.PartNumber, partResponse.ETag);
partETags.Add(eTagPart);
filePosition = filePosition += partSize;
}
// Step 3: complete
Console.WriteLine("Waiting for completion of multi-part upload");
CompleteMultipartUploadRequest compRequest = new CompleteMultipartUploadRequest()
{
BucketName = ECSS3Factory.S3_BUCKET,
Key = key,
UploadId = initResponse.UploadId,
PartETags = partETags
};
s3.CompleteMultipartUpload(compRequest);
}
catch (Exception e)
{
s3.AbortMultipartUpload(new AbortMultipartUploadRequest()
{
BucketName = ECSS3Factory.S3_BUCKET,
Key = key,
UploadId = initResponse.UploadId
});
Console.WriteLine(e);
}
// grab the end time of upload
DateTime endDate = DateTime.Now;
Console.WriteLine(string.Format("Completed multi-part upload for object {0}/{1} with file path: {2}", ECSS3Factory.S3_BUCKET, key, filePath));
Console.WriteLine(string.Format("Process took: {0} seconds.", (endDate - startDate).TotalSeconds.ToString()));
Console.ReadLine();
}
