/// <summary>
/// Initializes a new instance of the <see cref="LoadSheddingValidator"/> class.
/// </summary>
/// <param name="loadSheddingOptions">
/// The load shedding options.
/// </param>
/// <param name="hostEnvironmentStatistics">
/// The host environment statistics.
/// </param>
public LoadSheddingValidator(
IOptions <LoadSheddingOptions> loadSheddingOptions,
IHostEnvironmentStatistics hostEnvironmentStatistics
)
{
_loadSheddingOptions = loadSheddingOptions.Value;
_hostEnvironmentStatistics = hostEnvironmentStatistics;
}
public PlacementTestGrainBase(
OverloadDetector overloadDetector,
TestHooksHostEnvironmentStatistics hostEnvironmentStatistics,
IOptions <LoadSheddingOptions> loadSheddingOptions)
{
this.overloadDetector = overloadDetector;
this.hostEnvironmentStatistics = hostEnvironmentStatistics;
this.loadSheddingOptions = loadSheddingOptions.Value;
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="loadSheddingLimit"></param>
/// <param name="getNodeConfig">The method used to get the current node configuration.</param>
private LoadShedQueueFlowController(int loadSheddingLimit, LoadSheddingOptions options)
{
this.options = options;
if (loadSheddingLimit < 0 || loadSheddingLimit > 100)
{
throw new ArgumentOutOfRangeException(nameof(loadSheddingLimit), "Value must be between 0-100");
}
this.loadSheddingLimit = loadSheddingLimit != 0 ? loadSheddingLimit : int.MaxValue;
}
/// <summary>
/// Creates a flow controller triggered when the CPU reaches a percentage of the cluster load shedding limit.
/// This is intended to reduce queue read rate prior to causing the silo to shed load.
/// Note: Triggered only when load shedding is enabled.
/// </summary>
/// <param name="options">The silo satistics options.</param>
/// <param name="percentOfSiloSheddingLimit">Percentage of load shed limit which triggers a reduction of queue read rate.</param>
/// <returns></returns>
public static IQueueFlowController CreateAsPercentOfLoadSheddingLimit(LoadSheddingOptions options, int percentOfSiloSheddingLimit = LoadSheddingOptions.DEFAULT_LOAD_SHEDDING_LIMIT)
{
if (percentOfSiloSheddingLimit < 0.0 || percentOfSiloSheddingLimit > 100.0)
{
throw new ArgumentOutOfRangeException(nameof(percentOfSiloSheddingLimit), "Percent value must be between 0-100");
}
// Start shedding before silo reaches shedding limit.
return(new LoadShedQueueFlowController((int)(options.LoadSheddingLimit * (percentOfSiloSheddingLimit / 100.0)), options));
}
public TestHooksSystemTarget(
ISiloHost host,
ILocalSiloDetails siloDetails,
ILoggerFactory loggerFactory,
TestHooksHostEnvironmentStatistics hostEnvironmentStatistics,
IOptions <LoadSheddingOptions> loadSheddingOptions)
: base(Constants.TestHooksSystemTargetId, siloDetails.SiloAddress, loggerFactory)
{
this.host = host;
this.hostEnvironmentStatistics = hostEnvironmentStatistics;
this.loadSheddingOptions = loadSheddingOptions.Value;
this.consistentRingProvider = this.host.Services.GetRequiredService <IConsistentRingProvider>();
}
public TestHooksSystemTarget(
IServiceProvider serviceProvider,
ILocalSiloDetails siloDetails,
ILoggerFactory loggerFactory,
ISiloStatusOracle siloStatusOracle,
TestHooksHostEnvironmentStatistics hostEnvironmentStatistics,
IOptions <LoadSheddingOptions> loadSheddingOptions)
: base(Constants.TestHooksSystemTargetType, siloDetails.SiloAddress, loggerFactory)
{
this.serviceProvider = serviceProvider;
this.siloStatusOracle = siloStatusOracle;
this.hostEnvironmentStatistics = hostEnvironmentStatistics;
this.loadSheddingOptions = loadSheddingOptions.Value;
this.consistentRingProvider = this.serviceProvider.GetRequiredService <IConsistentRingProvider>();
}
public EventHubAdapterReceiver(EventHubPartitionSettings settings,
Func <string, IStreamQueueCheckpointer <string>, ILoggerFactory, ITelemetryProducer, IEventHubQueueCache> cacheFactory,
Func <string, Task <IStreamQueueCheckpointer <string> > > checkpointerFactory,
ILoggerFactory loggerFactory,
IQueueAdapterReceiverMonitor monitor,
LoadSheddingOptions loadSheddingOptions,
ITelemetryProducer telemetryProducer,
Func <EventHubPartitionSettings, string, ILogger, ITelemetryProducer, IEventHubReceiver> eventHubReceiverFactory = null)
{
if (settings == null)
{
throw new ArgumentNullException(nameof(settings));
}
if (cacheFactory == null)
{
throw new ArgumentNullException(nameof(cacheFactory));
}
if (checkpointerFactory == null)
{
throw new ArgumentNullException(nameof(checkpointerFactory));
}
if (loggerFactory == null)
{
throw new ArgumentNullException(nameof(loggerFactory));
}
if (monitor == null)
{
throw new ArgumentNullException(nameof(monitor));
}
if (loadSheddingOptions == null)
{
throw new ArgumentNullException(nameof(loadSheddingOptions));
}
if (telemetryProducer == null)
{
throw new ArgumentNullException(nameof(telemetryProducer));
}
this.settings = settings;
this.cacheFactory = cacheFactory;
this.checkpointerFactory = checkpointerFactory;
this.loggerFactory = loggerFactory;
this.logger = this.loggerFactory.CreateLogger($"{this.GetType().FullName}.{settings.Hub.Path}.{settings.Partition}");
this.monitor = monitor;
this.telemetryProducer = telemetryProducer;
this.loadSheddingOptions = loadSheddingOptions;
this.eventHubReceiverFactory = eventHubReceiverFactory == null ? EventHubAdapterReceiver.CreateReceiver : eventHubReceiverFactory;
}
internal SiloPerformanceMetrics(
IHostEnvironmentStatistics hostEnvironmentStatistics,
IAppEnvironmentStatistics appEnvironmentStatistics,
ILoggerFactory loggerFactory,
IOptions <LoadSheddingOptions> loadSheddingOptions)
{
this.loggerFactory = loggerFactory;
this.hostEnvironmentStatistics = hostEnvironmentStatistics;
this.appEnvironmentStatistics = appEnvironmentStatistics;
reportFrequency = TimeSpan.Zero;
overloadLatched = false;
overloadValue = false;
this.logger = loggerFactory.CreateLogger <SiloPerformanceMetrics>();
this.loadSheddingOptions = loadSheddingOptions.Value;
StringValueStatistic.FindOrCreate(StatisticNames.RUNTIME_IS_OVERLOADED, () => IsOverloaded.ToString());
}
/// <summary>
/// Creates a flow controller triggered when the CPU reaches the specified limit.
/// Note: Triggered only when load shedding is enabled.
/// </summary>
/// <param name="loadSheddingLimit">Percentage of CPU which triggers queue read rate reduction</param>
/// <param name="options">The silo satistics options.</param>
/// <returns></returns>
public static IQueueFlowController CreateAsPercentageOfCPU(int loadSheddingLimit, LoadSheddingOptions options)
{
if (loadSheddingLimit < 0 || loadSheddingLimit > 100)
{
throw new ArgumentOutOfRangeException(nameof(loadSheddingLimit), "Value must be between 0-100");
}
return(new LoadShedQueueFlowController(loadSheddingLimit, options));
}
