public BlobBufferedIns(GcsReqParmas reqParams)
{
this.blob = GcsService.Instance().GetBlob(reqParams.Bucket, reqParams.Blob);
this.blobSize = (long)this.blob.Size;
this.numOfBlobBtsLeft = this.blobSize;
this.fullBlobPath = reqParams.BlobFullPath;
this.dwLocalBufferSize = (int)Math.Min(Constants.BLOB_BUFFERED_INS_DOWNLOAD_SIZE * 2, this.blobSize);
}
public BlobBufferedOus(GcsReqParmas reqParams)
{
this.blob = GcsService.Instance().CreateEmptyBlob(reqParams.Bucket, reqParams.Blob);
this.reqParmas = reqParams;
this.fullBlobPath = reqParams.BlobFullPath;
this.centralBuffer = new byte[centralBufferSize];
this.localFileSize = (0 != reqParams.LocalFileSize) ? reqParams.LocalFileSize : 0;
this.uploadUri = GcsService.Instance().InitializeResumableUploader(reqParams.Bucket, reqParams.Blob);
}
public void SetGcsProperties()
{
GcsService gcsService = GcsService.Instance();
this.pathType = GcsPathType.INVALID;
try
{
if ("/".Equals(this.FullPath))
{
/* root directory : /:*/
this.pathType = GcsPathType.ROOT;
return;
}
/* validate the bucket name */
if (!this.Bucket.Equals("") && Uri.CheckHostName(this.Bucket) == 0)
{
return;
}
if (!this.Bucket.Equals("") && this.Blob.Equals(""))
{
/* bucket: /bucket */
Bucket bucket = gcsService.GetBucket(this.Bucket);
if (null != bucket)
{
this.pathType = GcsPathType.BUCKET;
this.Created = bucket.TimeCreated;
this.Updated = bucket.Updated;
this.Size = 0L;
}
}
else if (!this.Bucket.Equals("") && !this.Blob.Equals(""))
{
Google.Apis.Storage.v1.Data.Object blob = gcsService.GetBlob(this.Bucket, this.Blob);
if (null != blob && !blob.Name.EndsWith("/"))
{
/* blob: /container/folder/file1 */
this.pathType = GcsPathType.BLOB;
this.Created = blob.TimeCreated;
this.Updated = blob.Updated;
this.Size = blob.Size;
}
else if (gcsService.SubDirExists(this.Bucket, this.Blob))
{
/* virtual directory : /container/folder/ */
this.pathType = GcsPathType.SUBDIR;
}
}
//Utils.WriteLine("pathType:" + this.pathType);
}
catch (Exception ex)
{
Logger.Log(Logger.Level.Error, ex.Message);
}
}
/// <summary>
/// Singleton
/// </summary>
public static GcsService Instance()
{
if (instance == null)
{
lock (SyncRoot)
{
if (instance == null)
{
instance = new GcsService();
}
}
}
return(instance);
}
private int UploadBlobChunk(byte[] rawData, int offset, int length)
{
int dataUploadedThisChunk = 0;
try
{
byte[] targetData = new byte[length];
Buffer.BlockCopy(rawData, 0, targetData, 0, length);
GcsService.Instance().UploadBlobChunk(this.uploadUri, targetData, totalDataUploaded, length);
/* update the chunk counter */
chunkNumber++;
dataUploadedThisChunk = length;
targetData = null;
} catch (Exception ex) {
String errMessage = "Unexpected exception occurred when uploading to the blob : "
+ this.fullBlobPath + ", No. of chunk: " + chunkNumber + "." + ex.Message;
throw new BlobBufferedOusException(errMessage);
}
//Console.WriteLine(String.Format("Uploading to {0} , blockId: {1}, size: {2}", fullBlobPath, chunkNumber, length));
return(dataUploadedThisChunk);
}
private byte[] DownloadBlobChunk(long offset, int len)
{
long bytesDownloaded = 0;
byte[] dwLocalBuffer;
if (isBlobEOF)
{
return(null);
}
/* how much to read (only last chunk may be smaller) */
len = Math.Min((int)(blobSize - offset), len);
dwLocalBuffer = GcsService.Instance().DownloadByteRange(this.blob.Bucket, this.blob.Name, offset, offset + len - 1);
bytesDownloaded = dwLocalBuffer.Length;
numOfBlobBtsLeft = blobSize - offset - bytesDownloaded;
blobOffset = (offset + bytesDownloaded);
if (numOfBlobBtsLeft <= 0)
{
this.isBlobEOF = true;
}
Utils.WriteLine(String.Format("Downloaded from {0} , size of this chunk : {1}, " +
"total downloaded size: {2}, TID: {3}",
fullBlobPath, bytesDownloaded, blobOffset, ", TID: " + Thread.CurrentThread.ManagedThreadId));
return(dwLocalBuffer);
}
