private MediaDriver(MediaDriverConfig config)
{
Config = config;
_isRunning = true;
_processExitHandler = OnCurrentDomainOnProcessExit;
AppDomain.CurrentDomain.ProcessExit += _processExitHandler;
if (!Config.UseActiveIfPresent && IsDriverActive(config.Dir, config.DriverTimeout))
{
for (int i = 0; i < 12; i++) // 20% more max
{
Thread.Sleep(config.DriverTimeout / 10);
if (!IsDriverActive(config.Dir, config.DriverTimeout))
{
break;
}
if (i == 11)
{
var errorMsg =
$"Cannot start media driver: there is an active driver in the directory {config.Dir}";
_log.Error(errorMsg);
throw new InvalidOperationException(errorMsg);
}
}
}
if (!IsDriverActive(config.Dir, config.DriverTimeout))
{
StartEmbedded(config);
}
if (!IsDriverActive(config.Dir, config.DriverTimeout))
{
throw new Exception("Cannot start media driver");
}
// Client stream id should be unique per machine, not per media driver.
// Temp is ok, we only need to avoid same stream id among concurrently
// running clients (within 10 seconds), not forever. If a machine
// restarts and cleans temp there are no other running client and
// we could start from 0 again.
var dirPath =
Path.Combine(Path.GetTempPath(), "aeron_client_counters"); // any name, but do not start with 'aeron-'
Directory.CreateDirectory(dirPath);
_clientCountersFile =
new FixedSizeDirectFile(Path.Combine(dirPath, MediaDriverConfig.ClientCountersFileName));
}
private void StartEmbedded(MediaDriverConfig config)
{
if (!Environment.Is64BitProcess)
{
throw new InvalidOperationException("Embedded Aeron Media Driver is not supported on 32 bits");
}
_log.Info($"Aeron Media Driver: {AeronVersionFull()}");
_log.Info($"Using embedded C media driver at dir: {config.Dir}");
if (AeronDriverContextInit(out _ctx) < 0)
{
throw new MediaDriverException($"AeronDriverContextInit: ({AeronErrcode()}) {AeronErrmsg()}");
}
if (AeronDriverContextSetDirDeleteOnStart(_ctx, config.DirDeleteOnStart) < 0)
{
throw new MediaDriverException(
$"AeronDriverContextSetDirDeleteOnStart: ({AeronErrcode()}) {AeronErrmsg()}");
}
if (AeronDriverContextSetDirDeleteOnShutdown(_ctx, config.DirDeleteOnShutdown) < 0)
{
throw new MediaDriverException(
$"AeronDriverContextSetDirDeleteOnShutdown: ({AeronErrcode()}) {AeronErrmsg()}");
}
if (AeronDriverContextSetDirWarnIfExists(_ctx, false) < 0)
{
throw new MediaDriverException(
$"AeronDriverContextSetDirWarnIfExists: ({AeronErrcode()}) {AeronErrmsg()}");
}
Directory.CreateDirectory(config.Dir);
if (AeronDriverContextSetDir(_ctx, config.Dir) < 0)
{
throw new MediaDriverException($"AeronDriverContextSetDir: ({AeronErrcode()}) {AeronErrmsg()}");
}
if (AeronDriverContextSetDriverTimeoutMs(_ctx, (ulong)config.DriverTimeout) < 0)
{
throw new MediaDriverException(
$"AeronDriverContextSetDriverTimeoutMs: ({AeronErrcode()}) {AeronErrmsg()}");
}
if (AeronDriverContextSetTermBufferSparseFile(_ctx, false) < 0)
{
throw new MediaDriverException(
$"AeronDriverContextSetTermBufferSparseFile: ({AeronErrcode()}) {AeronErrmsg()}");
}
if (AeronDriverContextSetTermBufferLength(_ctx, (IntPtr)config.TermBufferLength) < 0)
{
throw new MediaDriverException(
$"AeronDriverContextSetTermBufferLength: ({AeronErrcode()}) {AeronErrmsg()}");
}
if (AeronDriverContextSetCountersBufferLength(_ctx, (IntPtr)(10 * 1024 * 1024)) < 0)
{
throw new MediaDriverException(
$"AeronDriverContextSetCountersBufferLength: ({AeronErrcode()}) {AeronErrmsg()}");
}
if (AeronDriverContextSetSocketSoSndbuf(_ctx, (IntPtr)config.SocketSoSndBuf) < 0)
{
throw new MediaDriverException(
$"AeronDriverContextSetSocketSoSndbuf: ({AeronErrcode()}) {AeronErrmsg()}");
}
if (AeronDriverContextSetClientLivenessTimeoutNs(_ctx,
(ulong)(Debugger.IsAttached ? 120 * 60 : 30) * 1_000_000_000) < 0)
{
throw new MediaDriverException(
$"AeronDriverContextSetClientLivenessTimeoutNs: ({AeronErrcode()}) {AeronErrmsg()}");
}
if (AeronDriverContextSetSocketSoRcvbuf(_ctx, (IntPtr)config.SocketSoRcvBuf) < 0)
{
throw new MediaDriverException(
$"AeronDriverContextSetSocketSoRcvbuf: ({AeronErrcode()}) {AeronErrmsg()}");
}
if (AeronDriverContextSetRcvInitialWindowLength(_ctx, (IntPtr)config.RcvInitialWindowLength) < 0)
{
throw new MediaDriverException(
$"AeronDriverContextSetRcvInitialWindowLength: ({AeronErrcode()}) {AeronErrmsg()}");
}
if (AeronDriverContextSetThreadingMode(_ctx, config.ThreadingMode) < 0)
{
throw new MediaDriverException($"AeronDriverContextSetDir: ({AeronErrcode()}) {AeronErrmsg()}");
}
_log.Info($"Threading mode: {AeronDriverContextGetThreadingMode(_ctx):G}");
if (AeronDriverContextSetSenderIdleStrategy(_ctx, config.SenderIdleStrategy.Name) < 0)
{
throw new MediaDriverException(
$"AeronDriverContextSetSenderIdleStrategy: ({AeronErrcode()}) {AeronErrmsg()}");
}
_log.Info($"SenderIdleStrategy: {AeronDriverContextGetSenderIdleStrategy(_ctx)}");
if (AeronDriverContextSetReceiverIdleStrategy(_ctx, config.ReceiverIdleStrategy.Name) < 0)
{
throw new MediaDriverException(
$"AeronDriverContextSetReceiverIdleStrategy: ({AeronErrcode()}) {AeronErrmsg()}");
}
_log.Info($"ReceiverIdleStrategy: {AeronDriverContextGetReceiverIdleStrategy(_ctx)}");
if (AeronDriverContextSetConductorIdleStrategy(_ctx, config.ConductorIdleStrategy.Name) < 0)
{
throw new MediaDriverException(
$"AeronDriverContextSetConductorIdleStrategy: ({AeronErrcode()}) {AeronErrmsg()}");
}
_log.Info($"ConductorIdleStrategy: {AeronDriverContextGetConductorIdleStrategy(_ctx)}");
if (AeronDriverContextSetSharednetworkIdleStrategy(_ctx, config.SharedNetworkIdleStrategy.Name) < 0)
{
throw new MediaDriverException(
$"AeronDriverContextSetConductorIdleStrategy: ({AeronErrcode()}) {AeronErrmsg()}");
}
_log.Info($"SharednetworkIdleStrategy: {AeronDriverContextGetSharednetworkIdleStrategy(_ctx)}");
if (AeronDriverContextSetSharedIdleStrategy(_ctx, config.SharedIdleStrategy.Name) < 0)
{
throw new MediaDriverException(
$"AeronDriverContextSetSharedIdleStrategy: ({AeronErrcode()}) {AeronErrmsg()}");
}
_log.Info($"SharedIdleStrategy: {AeronDriverContextGetSharedIdleStrategy(_ctx)}");
if (AeronDriverInit(out _driver, _ctx) < 0)
{
throw new MediaDriverException($"AeronDriverInit: ({AeronErrcode()}) {AeronErrmsg()}");
}
if (AeronDriverStart(_driver, false) < 0)
{
throw new MediaDriverException($"AeronDriverStart: ({AeronErrcode()}) {AeronErrmsg()}");
}
_ownDriver = true;
Thread.Sleep(500);
}
public static MediaDriver Start(MediaDriverConfig config)
{
return(new MediaDriver(config));
}