// Do the full runtime intitialization. This includes static initialization. // This mainly means: // - indexing the functions // - spinning up the listeners (so connecting to the services) private static async Task <JobHostContext> CreateJobHostContextAsync(this JobHostConfiguration config, JobHost host, CancellationToken shutdownToken, CancellationToken cancellationToken) { // If we already initialized the services, get the previous initialization so that // we don't double-execute the extension Initialize() methods. var partialInit = config.TakeOwnershipOfPartialInitialization(); var services = partialInit ?? config.CreateStaticServices(); FunctionExecutor functionExecutor = services.GetService <FunctionExecutor>(); IFunctionIndexProvider functionIndexProvider = services.GetService <IFunctionIndexProvider>(); ITriggerBindingProvider triggerBindingProvider = services.GetService <ITriggerBindingProvider>(); IBindingProvider bindingProvider = services.GetService <IBindingProvider>(); SingletonManager singletonManager = services.GetService <SingletonManager>(); IJobActivator activator = services.GetService <IJobActivator>(); IHostIdProvider hostIdProvider = services.GetService <IHostIdProvider>(); INameResolver nameResolver = services.GetService <INameResolver>(); IExtensionRegistry extensions = services.GetExtensions(); IStorageAccountProvider storageAccountProvider = services.GetService <IStorageAccountProvider>(); ILoggerFactory loggerFactory = services.GetService <ILoggerFactory>(); IFunctionResultAggregatorFactory aggregatorFactory = services.GetService <IFunctionResultAggregatorFactory>(); IAsyncCollector <FunctionInstanceLogEntry> functionEventCollector = null; // Create the aggregator if all the pieces are configured IAsyncCollector <FunctionInstanceLogEntry> aggregator = null; if (loggerFactory != null && aggregatorFactory != null && config.Aggregator.IsEnabled) { aggregator = aggregatorFactory.Create(config.Aggregator.BatchSize, config.Aggregator.FlushTimeout, loggerFactory); } IQueueConfiguration queueConfiguration = services.GetService <IQueueConfiguration>(); var blobsConfiguration = config.Blobs; TraceWriter trace = services.GetService <TraceWriter>(); IAsyncCollector <FunctionInstanceLogEntry> registeredFunctionEventCollector = services.GetService <IAsyncCollector <FunctionInstanceLogEntry> >(); if (registeredFunctionEventCollector != null && aggregator != null) { // If there are both an aggregator and a registered FunctionEventCollector, wrap them in a composite functionEventCollector = new CompositeFunctionEventCollector(new[] { registeredFunctionEventCollector, aggregator }); } else { // Otherwise, take whichever one is null (or use null if both are) functionEventCollector = aggregator ?? registeredFunctionEventCollector; } IWebJobsExceptionHandler exceptionHandler = services.GetService <IWebJobsExceptionHandler>(); if (exceptionHandler != null) { exceptionHandler.Initialize(host); } bool hasFastTableHook = services.GetService <IAsyncCollector <FunctionInstanceLogEntry> >() != null; bool noDashboardStorage = config.DashboardConnectionString == null; // Only testing will override these interfaces. IHostInstanceLoggerProvider hostInstanceLoggerProvider = services.GetService <IHostInstanceLoggerProvider>(); IFunctionInstanceLoggerProvider functionInstanceLoggerProvider = services.GetService <IFunctionInstanceLoggerProvider>(); IFunctionOutputLoggerProvider functionOutputLoggerProvider = services.GetService <IFunctionOutputLoggerProvider>(); if (hostInstanceLoggerProvider == null && functionInstanceLoggerProvider == null && functionOutputLoggerProvider == null) { if (hasFastTableHook && noDashboardStorage) { var loggerProvider = new FastTableLoggerProvider(trace); hostInstanceLoggerProvider = loggerProvider; functionInstanceLoggerProvider = loggerProvider; functionOutputLoggerProvider = loggerProvider; } else { var loggerProvider = new DefaultLoggerProvider(storageAccountProvider, trace); hostInstanceLoggerProvider = loggerProvider; functionInstanceLoggerProvider = loggerProvider; functionOutputLoggerProvider = loggerProvider; } } using (CancellationTokenSource combinedCancellationSource = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken, shutdownToken)) { CancellationToken combinedCancellationToken = combinedCancellationSource.Token; await WriteSiteExtensionManifestAsync(combinedCancellationToken); IStorageAccount dashboardAccount = await storageAccountProvider.GetDashboardAccountAsync(combinedCancellationToken); IHostInstanceLogger hostInstanceLogger = await hostInstanceLoggerProvider.GetAsync(combinedCancellationToken); IFunctionInstanceLogger functionInstanceLogger = await functionInstanceLoggerProvider.GetAsync(combinedCancellationToken); IFunctionOutputLogger functionOutputLogger = await functionOutputLoggerProvider.GetAsync(combinedCancellationToken); if (functionExecutor == null) { functionExecutor = new FunctionExecutor(functionInstanceLogger, functionOutputLogger, exceptionHandler, trace, functionEventCollector, loggerFactory); services.AddService(functionExecutor); } if (functionIndexProvider == null) { functionIndexProvider = new FunctionIndexProvider(services.GetService <ITypeLocator>(), triggerBindingProvider, bindingProvider, activator, functionExecutor, extensions, singletonManager, trace, loggerFactory); // Important to set this so that the func we passed to DynamicHostIdProvider can pick it up. services.AddService <IFunctionIndexProvider>(functionIndexProvider); } IFunctionIndex functions = await functionIndexProvider.GetAsync(combinedCancellationToken); IListenerFactory functionsListenerFactory = new HostListenerFactory(functions.ReadAll(), singletonManager, activator, nameResolver, trace, loggerFactory); IFunctionExecutor hostCallExecutor; IListener listener; HostOutputMessage hostOutputMessage; string hostId = await hostIdProvider.GetHostIdAsync(cancellationToken); if (string.Compare(config.HostId, hostId, StringComparison.OrdinalIgnoreCase) != 0) { // if this isn't a static host ID, provide the HostId on the config // so it is accessible config.HostId = hostId; } if (dashboardAccount == null) { hostCallExecutor = new ShutdownFunctionExecutor(shutdownToken, functionExecutor); IListener factoryListener = new ListenerFactoryListener(functionsListenerFactory); IListener shutdownListener = new ShutdownListener(shutdownToken, factoryListener); listener = shutdownListener; hostOutputMessage = new DataOnlyHostOutputMessage(); } else { string sharedQueueName = HostQueueNames.GetHostQueueName(hostId); IStorageQueueClient dashboardQueueClient = dashboardAccount.CreateQueueClient(); IStorageQueue sharedQueue = dashboardQueueClient.GetQueueReference(sharedQueueName); IListenerFactory sharedQueueListenerFactory = new HostMessageListenerFactory(sharedQueue, queueConfiguration, exceptionHandler, trace, loggerFactory, functions, functionInstanceLogger, functionExecutor); Guid hostInstanceId = Guid.NewGuid(); string instanceQueueName = HostQueueNames.GetHostQueueName(hostInstanceId.ToString("N")); IStorageQueue instanceQueue = dashboardQueueClient.GetQueueReference(instanceQueueName); IListenerFactory instanceQueueListenerFactory = new HostMessageListenerFactory(instanceQueue, queueConfiguration, exceptionHandler, trace, loggerFactory, functions, functionInstanceLogger, functionExecutor); HeartbeatDescriptor heartbeatDescriptor = new HeartbeatDescriptor { SharedContainerName = HostContainerNames.Hosts, SharedDirectoryName = HostDirectoryNames.Heartbeats + "/" + hostId, InstanceBlobName = hostInstanceId.ToString("N"), ExpirationInSeconds = (int)HeartbeatIntervals.ExpirationInterval.TotalSeconds }; IStorageBlockBlob blob = dashboardAccount.CreateBlobClient() .GetContainerReference(heartbeatDescriptor.SharedContainerName) .GetBlockBlobReference(heartbeatDescriptor.SharedDirectoryName + "/" + heartbeatDescriptor.InstanceBlobName); IRecurrentCommand heartbeatCommand = new UpdateHostHeartbeatCommand(new HeartbeatCommand(blob)); IEnumerable <MethodInfo> indexedMethods = functions.ReadAllMethods(); Assembly hostAssembly = GetHostAssembly(indexedMethods); string displayName = hostAssembly != null?hostAssembly.GetName().Name : "Unknown"; hostOutputMessage = new DataOnlyHostOutputMessage { HostInstanceId = hostInstanceId, HostDisplayName = displayName, SharedQueueName = sharedQueueName, InstanceQueueName = instanceQueueName, Heartbeat = heartbeatDescriptor, WebJobRunIdentifier = WebJobRunIdentifier.Current }; hostCallExecutor = CreateHostCallExecutor(instanceQueueListenerFactory, heartbeatCommand, exceptionHandler, shutdownToken, functionExecutor); IListenerFactory hostListenerFactory = new CompositeListenerFactory(functionsListenerFactory, sharedQueueListenerFactory, instanceQueueListenerFactory); listener = CreateHostListener(hostListenerFactory, heartbeatCommand, exceptionHandler, shutdownToken); // Publish this to Azure logging account so that a web dashboard can see it. await LogHostStartedAsync(functions, hostOutputMessage, hostInstanceLogger, combinedCancellationToken); } functionExecutor.HostOutputMessage = hostOutputMessage; IEnumerable <FunctionDescriptor> descriptors = functions.ReadAllDescriptors(); int descriptorsCount = descriptors.Count(); ILogger startupLogger = loggerFactory?.CreateLogger(LogCategories.Startup); if (config.UsingDevelopmentSettings) { string msg = "Development settings applied"; trace.Verbose(msg); startupLogger?.LogDebug(msg); } if (descriptorsCount == 0) { string msg = string.Format("No job functions found. Try making your job classes and methods public. {0}", Constants.ExtensionInitializationMessage); trace.Warning(msg, Host.TraceSource.Indexing); startupLogger?.LogWarning(msg); } else { StringBuilder functionsTrace = new StringBuilder(); functionsTrace.AppendLine("Found the following functions:"); foreach (FunctionDescriptor descriptor in descriptors) { functionsTrace.AppendLine(descriptor.FullName); } string msg = functionsTrace.ToString(); trace.Info(msg, Host.TraceSource.Indexing); startupLogger?.LogInformation(msg); } return(new JobHostContext(functions, hostCallExecutor, listener, trace, functionEventCollector, loggerFactory)); } }