public async Task Set(string key, byte[] value, TimeSpan?expireIn)
{
await _semaphore.WaitAsync();
var keyBytes = Encoding.UTF8.GetBytes(key);
var request = new MemcachedRequest(Enums.Opcode.Set, keyBytes, NextOpaque, value, TypeCode.Object, expireIn);
await CommandWithNoResult(request);
}
public async Task Delete(string key)
{
await _semaphore.WaitAsync();
var keyBytes = Encoding.UTF8.GetBytes(key);
var request = new MemcachedRequest(Enums.Opcode.Delete, keyBytes, NextOpaque);
await CommandWithNoResult(request);
}
public async Task <byte[]> Get(string key)
{
await _semaphore.WaitAsync();
var keyBytes = Encoding.UTF8.GetBytes(key);
var request = new MemcachedRequest(Enums.Opcode.Get, keyBytes, NextOpaque);
return(await CommandWithResult(request));
}
private async Task <MemcachedResponse> ExecuteCommand(MemcachedRequest request)
{
await _protocolWriter.WriteAsync(_memcachedMessageWriter, request);
var result = await _protocolReader.ReadAsync(_memcachedMessageReader);
_protocolReader.Advance();
return(result.Message);
}
private async Task CommandWithNoResult(MemcachedRequest request)
{
try
{
var result = await ExecuteCommand(request);
if (result.Header.ResponseStatus != ResponseStatus.NoError)
{
throw new Exception(result.Header.ResponseStatus.ToString());
}
}
finally
{
_semaphore.Release();
}
}
private async Task <byte[]> CommandWithResult(MemcachedRequest request)
{
try
{
var result = await ExecuteCommand(request);
if (result.Header.ResponseStatus == ResponseStatus.NoError)
{
return(result.Data.ToArray());
}
else
{
throw new Exception(result.Header.ResponseStatus.ToString());
}
}
finally
{
_semaphore.Release();
}
}
