public async Task<CloudAppendBlob> GetBlobReference(String shardingKey, String containerName, String streamId, CancellationToken token, StreamOptions streamOptions)
{
var client = _hydra.CreateBlobClient(shardingKey);
var account = client.Credentials.AccountName;
var container = client.GetContainerReference(containerName);
var semaphore = GetSemaphore(account, containerName, streamId);
if (await semaphore.WaitAsync(TimeSpan.FromSeconds(5), token))
{
try
{
if (streamOptions.CreateContainer && !GetContainerExists(account, containerName))
{
await container.CreateIfNotExistsAsync(token);
SetContainerExists(account, containerName);
}
var blob = container.GetAppendBlobReference(streamId);
if (streamOptions.CreateBlob && !GetStreamExists(account, containerName, streamId) && !await blob.ExistsAsync(token))
{
await blob.CreateOrReplaceAsync(token);
SetStreamExists(account, containerName, streamId);
}
return blob;
}
finally
{
semaphore.Release();
}
}
throw new TimeoutException("Unable to get blob reference");
}
public async Task<String[]> ReadEventsAsync(String shardingKey, String streamId, StreamOptions options = default(StreamOptions), CancellationToken token = default(CancellationToken))
{
var streamOptions = options ?? new StreamOptions();
var blob = await _streamContainer.GetBlobReference(shardingKey, Container, streamId, token, streamOptions);
var content = await blob.DownloadTextAsync(Encoding.UTF8, null, null, null, token);
return content.Split(new[] { DelimiterString }, StringSplitOptions.None);
}
public async Task WriteEventAsync(String shardingKey, String streamId, String eventData, StreamOptions options = default(StreamOptions), CancellationToken token = default(CancellationToken))
{
var dataBuilder = new StringBuilder(eventData);
var streamOptions = options ?? new StreamOptions();
var blob = await _streamContainer.GetBlobReference(shardingKey, Container, streamId, token, streamOptions);
if (streamOptions.AppendDelimeter)
{
dataBuilder.Append(DelimiterString);
}
using (var dataStream = new MemoryStream(Encoding.UTF8.GetBytes(dataBuilder.ToString())))
{
await blob.AppendBlockAsync(dataStream, null, token);
}
}
public async Task <CloudAppendBlob> GetBlobReference(string shardingKey, string containerName, string streamId, CancellationToken token, StreamOptions streamOptions)
{
var client = _hydra.CreateBlobClient(shardingKey);
var account = client.Credentials.AccountName;
var container = client.GetContainerReference(containerName);
var semaphore = GetSemaphore(account, containerName, streamId);
if (await semaphore.WaitAsync(TimeSpan.FromSeconds(5), token))
{
try
{
if (streamOptions.CreateContainer && !GetContainerExists(account, containerName))
{
await container.CreateIfNotExistsAsync(BlobContainerPublicAccessType.Off, null, null, token);
SetContainerExists(account, containerName);
}
var blob = container.GetAppendBlobReference(streamId);
if (streamOptions.CreateBlob && !GetStreamExists(account, containerName, streamId) && !await blob.ExistsAsync(null, null, token))
{
await blob.CreateOrReplaceAsync(null, null, null, token);
SetStreamExists(account, containerName, streamId);
}
return(blob);
}
finally
{
semaphore.Release();
}
}
throw new TimeoutException("Unable to get blob reference");
}
public async Task <string[]> ReadEventsAsync(string shardingKey, string streamId, StreamOptions options = default(StreamOptions), CancellationToken token = default(CancellationToken))
{
var streamOptions = options ?? new StreamOptions();
var blob = await _streamContainer.GetBlobReference(shardingKey, Container, streamId, token, streamOptions);
var content = await blob.DownloadTextAsync(Encoding.UTF8, null, null, null, token);
return(content.Split(new[] { DelimiterString }, StringSplitOptions.None));
}
public async Task WriteEventAsync(string shardingKey, string streamId, string eventData, StreamOptions options = default(StreamOptions), CancellationToken token = default(CancellationToken))
{
var dataBuilder = new StringBuilder(eventData);
var streamOptions = options ?? new StreamOptions();
var blob = await _streamContainer.GetBlobReference(shardingKey, Container, streamId, token, streamOptions);
if (streamOptions.AppendDelimeter)
{
dataBuilder.Append(DelimiterString);
}
using (var dataStream = new MemoryStream(Encoding.UTF8.GetBytes(dataBuilder.ToString())))
{
await blob.AppendBlockAsync(dataStream, null, null, null, null, token);
}
}
