public void Initialize()
{
configurationProvider = new Mock <IConfigurationProvider>();
configurationProvider.Setup(cp => cp.GetSetting(It.IsAny <string>()))
.Returns("avalue");
configurationProvider.Setup(cp => cp.CacheDuration)
.Returns(60);
configuration = new CloudConfigurationSettings(configurationProvider.Object);
}
/// <summary>IoC constructor.</summary>
public Runtime(CloudStorageProviders storage, IEnvironment environment, CloudConfigurationSettings settings, ILog log, ICloudRuntimeObserver observer = null)
{
_storage = storage;
_environment = environment;
_log = log;
_observer = observer;
_settings = settings;
}
/// <summary>IoC constructor.</summary>
public Runtime(CloudStorageProviders storage, IEnvironment environment, CloudConfigurationSettings settings, ILog log, ICloudRuntimeObserver observer = null)
{
_storage = storage;
_environment = environment;
_log = log;
_observer = observer;
_settings = settings;
}
/// <summary>IoC constructor.</summary>
public Runtime(RuntimeProviders runtimeProviders, ICloudEnvironment environment, CloudConfigurationSettings settings, ICloudRuntimeObserver observer = null)
{
_runtimeProviders = runtimeProviders;
_runtimeFinalizer = runtimeProviders.RuntimeFinalizer;
_environment = environment;
_log = runtimeProviders.Log;
_observer = observer;
_settings = settings;
}
/// <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()
{
var settings = new CloudConfigurationSettings
{
DataConnectionString = RoleEnvironment.GetConfigurationSettingValue("DataConnectionString"),
SelfManagementSubscriptionId = RoleEnvironment.GetConfigurationSettingValue("SelfManagementSubscriptionId"),
SelfManagementCertificateThumbprint = RoleEnvironment.GetConfigurationSettingValue("SelfManagementCertificateThumbprint")
};
// The trick is to load this same assembly in another domain, then
// instantiate this same class and invoke Run
var domain = AppDomain.CreateDomain("WorkerDomain", null, AppDomain.CurrentDomain.SetupInformation);
bool restartForAssemblyUpdate;
try
{
_isolatedInstance = (SingleRuntimeHost)domain.CreateInstanceAndUnwrap(
Assembly.GetExecutingAssembly().FullName,
typeof(SingleRuntimeHost).FullName);
// This never throws, unless something went wrong with IoC setup and that's fine
// because it is not possible to execute the worker
restartForAssemblyUpdate = _isolatedInstance.Run(settings);
}
finally
{
_isolatedInstance = null;
// If this throws, it's because something went wrong when unloading the AppDomain
// The exception correctly pulls down the entire worker process so that no AppDomains are
// left in memory
AppDomain.Unload(domain);
}
return(restartForAssemblyUpdate);
}
/// <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()
{
var settings = new CloudConfigurationSettings
{
DataConnectionString = RoleEnvironment.GetConfigurationSettingValue("DataConnectionString"),
SelfManagementSubscriptionId = RoleEnvironment.GetConfigurationSettingValue("SelfManagementSubscriptionId"),
SelfManagementCertificateThumbprint = RoleEnvironment.GetConfigurationSettingValue("SelfManagementCertificateThumbprint")
};
// The trick is to load this same assembly in another domain, then
// instantiate this same class and invoke Run
var domain = AppDomain.CreateDomain("WorkerDomain", null, AppDomain.CurrentDomain.SetupInformation);
bool restartForAssemblyUpdate;
try
{
_isolatedInstance = (SingleRuntimeHost)domain.CreateInstanceAndUnwrap(
Assembly.GetExecutingAssembly().FullName,
typeof(SingleRuntimeHost).FullName);
// This never throws, unless something went wrong with IoC setup and that's fine
// because it is not possible to execute the worker
restartForAssemblyUpdate = _isolatedInstance.Run(settings);
}
finally
{
_isolatedInstance = null;
// If this throws, it's because something went wrong when unloading the AppDomain
// The exception correctly pulls down the entire worker process so that no AppDomains are
// left in memory
AppDomain.Unload(domain);
}
return restartForAssemblyUpdate;
}
/// <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);
}
}
/// <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;
}
}
