/// <summary>
/// Run the hosted runtime, blocking the calling thread.
/// </summary>
/// <returns>True if the worker stopped as planned (e.g. due to updated assemblies)</returns>
public bool Run(Maybe<ICloudConfigurationSettings> externalRoleConfiguration)
{
_stoppedWaitHandle.Reset();
// IoC Setup
var builder = new ContainerBuilder();
builder.RegisterModule(new CloudModule());
if (externalRoleConfiguration.HasValue)
{
builder.RegisterModule(new CloudConfigurationModule(externalRoleConfiguration.Value));
}
else
{
builder.RegisterModule(new CloudConfigurationModule());
}
builder.Register(typeof (Runtime)).FactoryScoped();
// Run
using (var container = builder.Build())
{
var log = container.Resolve<ILog>();
_runtime = null;
try
{
_runtime = container.Resolve<Runtime>();
_runtime.RuntimeContainer = container;
// runtime endlessly keeps pinging queues for pending work
_runtime.Execute();
log.Log(LogLevel.Warn, "Runtime host stopped execution.");
}
catch (TypeLoadException typeLoadEx)
{
log.Log(LogLevel.Error, typeLoadEx, string.Format(
"Type {0} could not be loaded (service: {1}).",
typeLoadEx.TypeName,
GetServiceInExecution(_runtime)));
}
catch (FileLoadException fileLoadEx)
{
// Tentatively: referenced assembly is missing
log.Log(LogLevel.Error, fileLoadEx, string.Format(
"Could not load assembly probably due to a missing reference assembly (service: {0}).",
GetServiceInExecution(_runtime)));
}
catch (SecurityException securityEx)
{
// Tentatively: assembly cannot be loaded due to security config
log.Log(LogLevel.Error, securityEx, string.Format(
"Could not load assembly {0} probably due to security configuration (service: {1}).",
securityEx.FailedAssemblyInfo,
GetServiceInExecution(_runtime)));
}
catch (TriggerRestartException)
{
log.Log(LogLevel.Warn, "Runtime host was triggered to stop execution.");
return true;
}
catch (ThreadInterruptedException)
{
log.Log(LogLevel.Warn, "Runtime host interrupted execution.");
}
catch (ThreadAbortException)
{
log.Log(LogLevel.Warn, "Runtime host aborted execution.");
Thread.ResetAbort();
}
catch (Exception ex)
{
// Generic exception
log.Log(LogLevel.Error, ex, string.Format(
"An unhandled exception occurred (service: {0}).",
GetServiceInExecution(_runtime)));
}
finally
{
_stoppedWaitHandle.Set();
_runtime = null;
}
return false;
}
}
static string GetServiceInExecution(Runtime runtime)
{
string service;
return runtime == null || String.IsNullOrEmpty(service = runtime.ServiceInExecution)
? "unknown"
: service;
}
/// <summary>
/// Run the hosted runtime, blocking the calling thread.
/// </summary>
/// <returns>True if the worker stopped as planned (e.g. due to updated assemblies)</returns>
public bool Run(CloudConfigurationSettings settings)
{
_stoppedWaitHandle.Reset();
// Runtime IoC Setup
var runtimeBuilder = new ContainerBuilder();
runtimeBuilder.RegisterModule(new CloudModule());
runtimeBuilder.RegisterInstance(settings);
runtimeBuilder.RegisterType<Runtime>().InstancePerDependency();
// Run
using (var runtimeContainer = runtimeBuilder.Build())
{
var environment = runtimeContainer.Resolve<IEnvironment>();
var log = runtimeContainer.Resolve<ILog>();
AppDomain.CurrentDomain.UnhandledException += (sender, e) => log.TryErrorFormat(
e.ExceptionObject as Exception,
"Runtime Host: An unhandled {0} exception occurred on worker {1} in a background thread. The Runtime Host will be restarted: {2}.",
e.ExceptionObject.GetType().Name, environment.Host.WorkerName, e.IsTerminating);
_runtime = null;
try
{
_runtime = runtimeContainer.Resolve<Runtime>();
_runtime.RuntimeContainer = runtimeContainer;
// runtime endlessly keeps pinging queues for pending work
_runtime.Execute();
log.TryDebugFormat("Runtime Host: Runtime has stopped cleanly on worker {0}.",
environment.Host.WorkerName);
}
catch (TypeLoadException typeLoadException)
{
log.TryErrorFormat(typeLoadException, "Runtime Host: Type {0} could not be loaded. The Runtime Host will be restarted.",
typeLoadException.TypeName);
}
catch (FileLoadException fileLoadException)
{
// Tentatively: referenced assembly is missing
log.TryFatal("Runtime Host: Could not load assembly probably due to a missing reference assembly. The Runtime Host will be restarted.", fileLoadException);
}
catch (SecurityException securityException)
{
// Tentatively: assembly cannot be loaded due to security config
log.TryFatalFormat(securityException, "Runtime Host: Could not load assembly {0} probably due to security configuration. The Runtime Host will be restarted.",
securityException.FailedAssemblyInfo);
}
catch (TriggerRestartException)
{
log.TryDebugFormat("Runtime Host: Triggered to stop execution on worker {0}. The Role Instance will be recycled and the Runtime Host restarted.",
environment.Host.WorkerName);
return true;
}
catch (ThreadAbortException)
{
Thread.ResetAbort();
log.TryDebugFormat("Runtime Host: execution was aborted on worker {0}. The Runtime is stopping.", environment.Host.WorkerName);
}
catch (Exception ex)
{
// Generic exception
log.TryErrorFormat(ex, "Runtime Host: An unhandled {0} exception occurred on worker {1}. The Runtime Host will be restarted.",
ex.GetType().Name, environment.Host.WorkerName);
}
finally
{
_stoppedWaitHandle.Set();
_runtime = null;
}
return false;
}
}