/// <remarks>Never run a cell process entry point more than once per AppDomain.</remarks>
public void Run(CellDefinition cellDefinition, IDeploymentReader deploymentReader, ApplicationEnvironment environment)
{
// Load Assemblies into AppDomain
var assemblies = deploymentReader.GetAssembliesAndSymbols(cellDefinition.Assemblies).ToList();
var loader = new AssemblyLoader();
loader.LoadAssembliesIntoAppDomain(assemblies, environment);
// Create the EntryPoint
var entryPointTypeName = cellDefinition.EntryPointTypeName;
if (string.IsNullOrEmpty(entryPointTypeName))
{
entryPointTypeName = "Lokad.Cloud.Services.AppEntryPoint.EntryPoint, Lokad.Cloud.Services.AppEntryPoint";
}
var entryPointType = Type.GetType(entryPointTypeName);
if (entryPointType == null)
{
throw new InvalidOperationException("Type " + entryPointTypeName + " not found.");
}
_appEntryPoint = (IApplicationEntryPoint)Activator.CreateInstance(entryPointType);
var settings = string.IsNullOrEmpty(cellDefinition.SettingsXml) ? new XElement("Settings") : XElement.Parse(cellDefinition.SettingsXml);
// Run
_appEntryPoint.Run(settings, deploymentReader, environment, _externalCancellationTokenSource.Token);
}
void Run()
{
var cancellationToken = _cancellationTokenSource.Token;
_thread = new Thread(() =>
{
var currentRoundStartTime = DateTimeOffset.UtcNow - FloodFrequencyThreshold;
while (!cancellationToken.IsCancellationRequested)
{
var observer = _hostContext.Observer;
var lastRoundStartTime = currentRoundStartTime;
currentRoundStartTime = DateTimeOffset.UtcNow;
var identity = _hostContext.GetNewCellLifeIdentity(_solutionName, _cellName, _deployment);
AppDomain domain = AppDomain.CreateDomain("LokadCloudServiceRuntimeCell_" + identity.UniqueCellInstanceName, null, AppDomain.CurrentDomain.SetupInformation);
try
{
try
{
_entryPoint = (CellAppDomainEntryPoint)domain.CreateInstanceAndUnwrap(
Assembly.GetExecutingAssembly().FullName,
typeof(CellAppDomainEntryPoint).FullName);
}
catch (Exception exception)
{
// Fatal Error
observer.TryNotify(() => new CellFatalErrorRestartedEvent(identity, exception));
cancellationToken.WaitHandle.WaitOne(DelayWhenFlooding);
continue;
}
// Forward cancellation token to AppDomain-internal cancellation token source
var registration = cancellationToken.Register(_entryPoint.Cancel);
var environment = new ApplicationEnvironment(_hostContext, identity, _deployment, _cellDefinition.Assemblies, _sendCommand);
try
{
observer.TryNotify(() => new CellStartedEvent(identity));
_entryPoint.Run(_cellDefinition, _hostContext.DeploymentReader, environment);
}
catch (ThreadAbortException exception)
{
Thread.ResetAbort();
observer.TryNotify(() => new CellAbortedEvent(identity, exception));
}
catch (Exception exception)
{
if (cancellationToken.IsCancellationRequested)
{
observer.TryNotify(() => new CellAbortedEvent(identity, exception));
}
else
{
_entryPoint = null;
if ((DateTimeOffset.UtcNow - lastRoundStartTime) < FloodFrequencyThreshold)
{
observer.TryNotify(() => new CellExceptionRestartedEvent(identity, exception, true));
cancellationToken.WaitHandle.WaitOne(DelayWhenFlooding);
}
else
{
observer.TryNotify(() => new CellExceptionRestartedEvent(identity, exception, false));
}
}
}
finally
{
RemotingServices.Disconnect(environment);
_entryPoint = null;
observer.TryNotify(() => new CellStoppedEvent(identity));
registration.Dispose();
}
}
catch (Exception exception)
{
// Fatal Error
observer.TryNotify(() => new CellFatalErrorRestartedEvent(identity, exception));
cancellationToken.WaitHandle.WaitOne(DelayWhenFlooding);
continue;
}
finally
{
AppDomain.Unload(domain);
}
}
});
_thread.Name = "Lokad.Cloud AppHost Cell (" + _cellName + ")";
_thread.Start();
}
/// <remarks>Never run a cell process entry point more than once per AppDomain.</remarks>
public void Run(CellDefinition cellDefinition, IDeploymentReader deploymentReader, ApplicationEnvironment environment)
{
// Load Assemblies into AppDomain
var assemblies = deploymentReader.GetAssembliesAndSymbols(cellDefinition.Assemblies).ToList();
var loader = new AssemblyLoader();
loader.LoadAssembliesIntoAppDomain(assemblies, environment);
// Create the EntryPoint
var entryPointTypeName = cellDefinition.EntryPointTypeName;
if (string.IsNullOrEmpty(entryPointTypeName))
{
entryPointTypeName = "Lokad.Cloud.Services.AppEntryPoint.EntryPoint, Lokad.Cloud.Services.AppEntryPoint";
}
var entryPointType = Type.GetType(entryPointTypeName);
if (entryPointType == null)
{
throw new InvalidOperationException("Type " + entryPointTypeName + " not found.");
}
_appEntryPoint = (IApplicationEntryPoint)Activator.CreateInstance(entryPointType);
var settings = string.IsNullOrEmpty(cellDefinition.SettingsXml) ? new XElement("Settings") : XElement.Parse(cellDefinition.SettingsXml);
// Run
_appEntryPoint.Run(settings, deploymentReader, environment, _externalCancellationTokenSource.Token);
}
void Run()
{
var cancellationToken = _cancellationTokenSource.Token;
_thread = new Thread(() =>
{
var currentRoundStartTime = DateTimeOffset.UtcNow - FloodFrequencyThreshold;
while (!cancellationToken.IsCancellationRequested)
{
var observer = _hostContext.Observer;
var lastRoundStartTime = currentRoundStartTime;
currentRoundStartTime = DateTimeOffset.UtcNow;
var identity = _hostContext.GetNewCellLifeIdentity(_solutionName, _cellName, _deployment);
AppDomain domain = AppDomain.CreateDomain("LokadCloudServiceRuntimeCell_" + identity.UniqueCellInstanceName, null, AppDomain.CurrentDomain.SetupInformation);
try
{
try
{
_entryPoint = (CellAppDomainEntryPoint)domain.CreateInstanceAndUnwrap(
Assembly.GetExecutingAssembly().FullName,
typeof(CellAppDomainEntryPoint).FullName);
}
catch (Exception exception)
{
// Fatal Error
observer.TryNotify(() => new CellFatalErrorRestartedEvent(identity, exception));
cancellationToken.WaitHandle.WaitOne(DelayWhenFlooding);
continue;
}
// Forward cancellation token to AppDomain-internal cancellation token source
var registration = cancellationToken.Register(_entryPoint.Cancel);
var environment = new ApplicationEnvironment(_hostContext, identity, _deployment, _cellDefinition.Assemblies, _sendCommand);
try
{
observer.TryNotify(() => new CellStartedEvent(identity));
_entryPoint.Run(_cellDefinition, _hostContext.DeploymentReader, environment);
}
catch (ThreadAbortException exception)
{
Thread.ResetAbort();
observer.TryNotify(() => new CellAbortedEvent(identity, exception));
}
catch (Exception exception)
{
if (cancellationToken.IsCancellationRequested)
{
observer.TryNotify(() => new CellAbortedEvent(identity, exception));
}
else
{
_entryPoint = null;
if ((DateTimeOffset.UtcNow - lastRoundStartTime) < FloodFrequencyThreshold)
{
observer.TryNotify(() => new CellExceptionRestartedEvent(identity, exception, true));
cancellationToken.WaitHandle.WaitOne(DelayWhenFlooding);
}
else
{
observer.TryNotify(() => new CellExceptionRestartedEvent(identity, exception, false));
}
}
}
finally
{
RemotingServices.Disconnect(environment);
_entryPoint = null;
observer.TryNotify(() => new CellStoppedEvent(identity));
registration.Dispose();
}
}
catch (Exception exception)
{
// Fatal Error
observer.TryNotify(() => new CellFatalErrorRestartedEvent(identity, exception));
cancellationToken.WaitHandle.WaitOne(DelayWhenFlooding);
continue;
}
finally
{
AppDomain.Unload(domain);
}
}
});
_thread.Name = "Lokad.Cloud AppHost Cell (" + _cellName + ")";
_thread.Start();
}
