private async Task ReconnectAsync(bool isReconnect)
{
var connectAttempter = new Attempter(3);
while (connectAttempter.Attempt())
{
this.mpcConnectionReporter?.Connecting(isReconnect, connectAttempter.CurrentAttempt);
await this.DisconnectAsync(false);
this.tcpClient = new TcpClient();
await this.tcpClient.ConnectAsync(this.server.Address, this.server.Port);
if (this.tcpClient.Connected)
{
this.mpcConnectionReporter?.ConnectionAccepted(isReconnect, connectAttempter.CurrentAttempt);
break;
}
}
this.networkStream = this.tcpClient.GetStream();
using (var reader = new StreamReader(this.networkStream, Encoding, true, 512, true))
{
var firstLine = await reader.ReadLineAsync();
if (!firstLine.StartsWith(Constants.FirstLinePrefix))
{
await this.DisconnectAsync(false);
throw new MpcConnectException("Response of mpd does not start with \"" + Constants.FirstLinePrefix + "\".");
}
this.Version = firstLine.Substring(Constants.FirstLinePrefix.Length);
this.mpcConnectionReporter?.Connected(isReconnect, connectAttempter.CurrentAttempt, firstLine);
}
}
public void Attempt_Then_ResultsShouldEqualExpectedResults()
{
var expectedResults = new[] { true, true, false };
var testee = new Attempter(2);
var results = new List <bool>();
foreach (var ignored in expectedResults)
{
results.Add(testee.Attempt());
}
results.Should().Equal(expectedResults);
}
private void RefreshBuildStatus(object state)
{
var attempter = new Attempter(5);
var cancellationToken = this.cancellationTokenSource.Token;
try
{
while (!cancellationToken.IsCancellationRequested)
{
try
{
var currentBuildStatus = this.GetStatus(this.buildTypeId);
if (currentBuildStatus.HasPendingBuild != this.lastBuildStatus.HasPendingBuild ||
currentBuildStatus.LastBuildStatus != this.lastBuildStatus.LastBuildStatus)
{
this.BuildStatusChanged?.Invoke(this, currentBuildStatus);
}
this.lastBuildStatus = currentBuildStatus;
attempter.Reset(5);
this.manualResetEvent.WaitOne(this.refreshInterval);
}
catch (OperationCanceledException)
{
throw;
}
catch (Exception e)
{
if (!attempter.Attempt())
{
this.teamCityBuildStatusProviderReporter?.RefreshBuildStatusFailed(attempter.MaxAttempts, e);
this.manualResetEvent.WaitOne(TimeSpan.FromSeconds(20));
attempter.Reset();
}
else
{
this.manualResetEvent.WaitOne(this.refreshInterval);
}
}
}
}
catch (OperationCanceledException)
{
}
}
/// <summary>
/// Sends the command asynchronously.
/// </summary>
/// <typeparam name="TResponse">The response type.</typeparam>
/// <param name="mpcCommand">The MPC command.</param>
/// <returns>
/// The send task.
/// </returns>
public async Task <IMpdMessage <TResponse> > SendAsync <TResponse>(IMpcCommand <TResponse> mpcCommand)
{
if (this.tcpClient == null)
{
await this.ReconnectAsync(true);
}
if (mpcCommand == null)
{
throw new CommandNullException();
}
Exception lastException = null;
IReadOnlyList <string> response = new List <string>();
var sendAttempter = new Attempter(3);
var commandText = mpcCommand.Serialize();
this.mpcConnectionReporter?.Sending(commandText);
while (sendAttempter.Attempt())
{
try
{
using (var writer = new StreamWriter(this.networkStream, Encoding, 512, true)
{
NewLine = "\n"
})
{
await writer.WriteLineAsync(commandText);
await writer.FlushAsync();
}
response = await this.ReadResponseAsync();
if (response.Any())
{
lastException = null;
break;
}
throw new EmptyResponseException(commandText);
}
catch (Exception exception)
{
lastException = exception;
this.mpcConnectionReporter?.SendException(commandText, sendAttempter.CurrentAttempt, exception);
await this.ReconnectAsync(true);
this.mpcConnectionReporter?.RetrySend(commandText, sendAttempter.CurrentAttempt);
}
}
if (lastException != null)
{
try
{
await this.DisconnectAsync(false);
}
catch (Exception)
{
}
return(new ErrorMpdMessage <TResponse>(mpcCommand, new ErrorMpdResponse <TResponse>(lastException)));
}
return(new MpdMessage <TResponse>(mpcCommand, true, response));
}