internal ClusteredServiceAgent(ClusteredServiceContainer.Context ctx)
{
this.ctx = ctx;
archiveCtx = ctx.ArchiveContext();
aeron = ctx.Aeron();
shouldCloseResources = ctx.OwnsAeronClient();
service = ctx.ClusteredService();
recordingLog = ctx.RecordingLog();
idleStrategy = ctx.IdleStrategy();
serviceId = ctx.ServiceId();
epochClock = ctx.EpochClock();
markFile = ctx.MarkFile();
var channel = ctx.ServiceControlChannel();
var streamId = ctx.ServiceControlStreamId();
serviceControlPublisher = new ServiceControlPublisher(aeron.AddPublication(channel, streamId));
serviceControlAdapter = new ServiceControlAdapter(aeron.AddSubscription(channel, streamId), this);
}
/// <summary>
/// Set the <seealso cref="Service.RecordingLog"/> for the log terms and snapshots.
/// </summary>
/// <param name="recordingLog"> to use. </param>
/// <returns> this for a fluent API. </returns>
public Context RecordingLog(RecordingLog recordingLog)
{
this.recordingLog = recordingLog;
return(this);
}
public void Conclude()
{
if (null == threadFactory)
{
threadFactory = new DefaultThreadFactory();
}
if (null == idleStrategySupplier)
{
idleStrategySupplier = Configuration.IdleStrategySupplier(null);
}
if (null == epochClock)
{
epochClock = new SystemEpochClock();
}
if (null == errorHandler)
{
throw new InvalidOperationException("Error handler must be supplied");
}
if (null == aeron)
{
aeron = Adaptive.Aeron.Aeron.Connect(
new Aeron.Aeron.Context()
.AeronDirectoryName(aeronDirectoryName)
.ErrorHandler(countedErrorHandler.OnError)
.EpochClock(epochClock));
if (null == errorCounter)
{
errorCounter = aeron.AddCounter(SYSTEM_COUNTER_TYPE_ID,
"Cluster errors - service " + serviceId);
}
ownsAeronClient = true;
}
if (null == errorCounter)
{
throw new InvalidOperationException("Error counter must be supplied");
}
if (null == countedErrorHandler)
{
countedErrorHandler = new CountedErrorHandler(errorHandler, errorCounter);
if (ownsAeronClient)
{
aeron.Ctx().ErrorHandler(countedErrorHandler.OnError);
}
}
if (null == archiveContext)
{
archiveContext = new AeronArchive.Context()
.ControlRequestChannel(AeronArchive.Configuration.LocalControlChannel())
.ControlResponseChannel(AeronArchive.Configuration.LocalControlChannel())
.ControlRequestStreamId(AeronArchive.Configuration.LocalControlStreamId());
}
archiveContext
.AeronClient(aeron)
.OwnsAeronClient(false)
.Lock(new NoOpLock());
if (deleteDirOnStart)
{
if (null != clusteredServiceDir)
{
IoUtil.Delete(clusteredServiceDir, true);
}
else
{
IoUtil.Delete(new DirectoryInfo(Configuration.ClusteredServiceDirName()), true);
}
}
if (null == clusteredServiceDir)
{
clusteredServiceDir = new DirectoryInfo(clusteredServiceDirectoryName);
}
if (!clusteredServiceDir.Exists)
{
Directory.CreateDirectory(clusteredServiceDir.FullName);
}
if (null == recordingLog)
{
recordingLog = new RecordingLog(clusteredServiceDir);
}
if (null == shutdownSignalBarrier)
{
shutdownSignalBarrier = new ShutdownSignalBarrier();
}
if (null == terminationHook)
{
terminationHook = () => shutdownSignalBarrier.Signal();
}
if (null == clusteredService)
{
string className = Config.GetProperty(Configuration.SERVICE_CLASS_NAME_PROP_NAME);
if (null == className)
{
throw new InvalidOperationException("Either a ClusteredService instance or class name for the service must be provided");
}
clusteredService = (IClusteredService)Activator.CreateInstance(Type.GetType(className));
}
ConcludeMarkFile();
}