public void Log <TState>(LogLevel logLevel, EventId eventId, TState state, Exception exception, Func <TState, Exception, string> formatter)
{
if (!IsEnabled(logLevel))
{
return;
}
var task = Task.Factory.StartNew(() =>
{
var date = DateTime.UtcNow.ToString("o");
var ex = exception != null ? exception.ToString().Replace(Environment.NewLine, " ") : string.Empty;
var entry = $"[{date}]\t{logLevel.ToString()}\t{CategoryName}\t{state.ToString()}\t{ex}" + Environment.NewLine;
if (!AppendBlob.Exists())
{
AppendBlob.CreateOrReplace();
}
try
{
using (var stream = new MemoryStream(Encoding.UTF8.GetBytes(entry)))
{
AppendBlob.AppendBlock(stream);
}
}
catch (Exception)
{
throw;
}
});
}
static void Main(string[] args)
{
int oneKB = 1024; //1 kb
int blockSize = 512; //kb
int nrBlocks = 10;
int nrDirectories = 5;
int nrSubFolders = 1;
int nrFilesPerDirectory = 10;
//Create Folder Structure
CreateFolderStructure(oneKB, blockSize, nrDirectories, nrSubFolders, nrFilesPerDirectory);
//Show Folder Structure and list files in each directory
ShowFolderStructure("testappendblobs");
//create a new blob to append to.
var blob = new AppendBlob("testappendblobs", "appendfile.bin", connectionstring);
//Write To an Append Blob
WriteToAppendBlob(oneKB, blockSize, nrBlocks, blob);
//Show Properties from Blob
ReadPropertiesFromBlob(blob);
//Read bytes from AppendBlob
ReadBytesFromAppendBlob(oneKB, blockSize, blob);
//Delete the blob
DeleteAppendBlob(blob);
Console.WriteLine("Press any key");
Console.ReadLine();
}
private static void ReadPropertiesFromBlob(AppendBlob blob)
{
var filesizetask = blob.GetBlobProperties();
var fileProperties = filesizetask.Result;
Console.WriteLine($"File is of type {fileProperties.BlobType} and has length {fileProperties.Length / 1024} kb and last modified at {fileProperties.LastModified}.");
}
public string PeekLastAppendBlob(string containerName, string blobName)
{
lock (AppendBlob)
{
if (AppendBlob.TryGetValue(new KeyValuePair <string, string>(containerName, blobName), out var payload))
{
return(Encoding.UTF8.GetString(payload));
}
}
return(null);
}
private static void ReadBytesFromAppendBlob(int oneKB, int blockSize, AppendBlob blobStream)
{
Console.WriteLine("/n/n");
Console.WriteLine("Start reading a byte at every 1024 bytes");
var filesizetask = blobStream.GetBlobProperties();
var fileProperties = filesizetask.Result;
for (int b = 0; b < fileProperties.Length; b += blockSize * oneKB)
{
byte[] bytesArray = null;
var bytesRead = blobStream.Read(out bytesArray, b, oneKB);
Console.WriteLine($"First 5 byte from position {b} had value {bytesArray[0]},{bytesArray[1]},{bytesArray[2]},{bytesArray[3]},{bytesArray[4]}");
}
}
private static void CreateFolderStructure(int oneKB, int blockSize, int nrDirectories, int nrSubFolders, int nrFilesPerDirectory)
{
for (var d = 0; d < nrDirectories; d++)
{
for (var f = 0; f < nrFilesPerDirectory; f++)
{
var filename = $"Folder{d}/file{f}.bin";
var bStream = new AppendBlob("testappendblobs", filename, connectionstring);
var oneKb = GetRandomBytes(blockSize * oneKB);
bStream.Write(oneKb, 0, oneKb.Length);
}
for (var s = 0; s < nrSubFolders; s++)
{
for (var f = 0; f < nrFilesPerDirectory; f++)
{
var filename = $"Folder{d}/Folder{d}-{s}/file{f}.bin";
var bStream = new AppendBlob("testappendblobs", filename, connectionstring);
var oneKb = GetRandomBytes(blockSize * oneKB);
bStream.Write(oneKb, 0, oneKb.Length);
}
}
}
}
private static void DeleteAppendBlob(AppendBlob blob)
{
Console.WriteLine("Delete the blob");
blob.Remove();
}
private static void WriteToAppendBlob(int oneKB, int blockSize, int nrBlocks, AppendBlob blobStream)
{
Console.WriteLine("Writing data to test2.bin./n/n");
Console.WriteLine($"nrBlocks;blockSize;Seconds;kbits/sec");
var t0 = DateTime.Now;
for (int i = 0; i < nrBlocks; i++)
{
var bytes = GetRandomBytes(blockSize * oneKB);
blobStream.Write(bytes, 0, bytes.Length);
}
var t1 = DateTime.Now;
var delta = t1 - t0;
Console.WriteLine($"{nrBlocks};{blockSize};{delta.TotalSeconds};{(blockSize * 8 * nrBlocks) / delta.TotalSeconds}");
}
