private static IStructuredLogger CreateNLogAdapter(OperationContext operationContext, DistributedCacheServiceArguments arguments)
{
Contract.RequiresNotNull(arguments.Configuration.LoggingSettings);
// This is done for performance. See: https://github.com/NLog/NLog/wiki/performance#configure-nlog-to-not-scan-for-assemblies
NLog.Config.ConfigurationItemFactory.Default = new NLog.Config.ConfigurationItemFactory(typeof(NLog.ILogger).GetTypeInfo().Assembly);
// This is needed for dependency ingestion. See: https://github.com/NLog/NLog/wiki/Dependency-injection-with-NLog
// The issue is that we need to construct a log, which requires access to both our config and the host. It
// seems too much to put it into the AzureBlobStorageLogTarget itself, so we do it here.
var defaultConstructor = NLog.Config.ConfigurationItemFactory.Default.CreateInstance;
NLog.Config.ConfigurationItemFactory.Default.CreateInstance = type =>
{
if (type == typeof(AzureBlobStorageLogTarget))
{
var log = CreateAzureBlobStorageLogAsync(operationContext, arguments, arguments.Configuration.LoggingSettings.Configuration).Result;
var target = new AzureBlobStorageLogTarget(log);
return(target);
}
return(defaultConstructor(type));
};
NLog.Targets.Target.Register <AzureBlobStorageLogTarget>(nameof(AzureBlobStorageLogTarget));
// This is done in order to allow our logging configuration to access key telemetry information.
var telemetryFieldsProvider = arguments.TelemetryFieldsProvider;
NLog.LayoutRenderers.LayoutRenderer.Register("APEnvironment", _ => telemetryFieldsProvider.APEnvironment);
NLog.LayoutRenderers.LayoutRenderer.Register("APCluster", _ => telemetryFieldsProvider.APCluster);
NLog.LayoutRenderers.LayoutRenderer.Register("APMachineFunction", _ => telemetryFieldsProvider.APMachineFunction);
NLog.LayoutRenderers.LayoutRenderer.Register("MachineName", _ => telemetryFieldsProvider.MachineName);
NLog.LayoutRenderers.LayoutRenderer.Register("ServiceName", _ => telemetryFieldsProvider.ServiceName);
NLog.LayoutRenderers.LayoutRenderer.Register("ServiceVersion", _ => telemetryFieldsProvider.ServiceVersion);
NLog.LayoutRenderers.LayoutRenderer.Register("Stamp", _ => telemetryFieldsProvider.Stamp);
NLog.LayoutRenderers.LayoutRenderer.Register("Ring", _ => telemetryFieldsProvider.Ring);
NLog.LayoutRenderers.LayoutRenderer.Register("ConfigurationId", _ => telemetryFieldsProvider.ConfigurationId);
NLog.LayoutRenderers.LayoutRenderer.Register("CacheVersion", _ => Utilities.Branding.Version);
NLog.LayoutRenderers.LayoutRenderer.Register("Role", _ => GlobalInfoStorage.GetGlobalInfo(GlobalInfoKey.LocalLocationStoreRole));
NLog.LayoutRenderers.LayoutRenderer.Register("BuildId", _ => GlobalInfoStorage.GetGlobalInfo(GlobalInfoKey.BuildId));
// Follows ISO8601 without timezone specification.
// See: https://kusto.azurewebsites.net/docs/query/scalar-data-types/datetime.html
// See: https://docs.microsoft.com/en-us/dotnet/standard/base-types/standard-date-and-time-format-strings?view=netframework-4.8#the-round-trip-o-o-format-specifier
var processStartTimeUtc = SystemClock.Instance.UtcNow.ToString("o", System.Globalization.CultureInfo.InvariantCulture);
NLog.LayoutRenderers.LayoutRenderer.Register("ProcessStartTimeUtc", _ => processStartTimeUtc);
var configuration = new NLog.Config.XmlLoggingConfiguration(arguments.Configuration.LoggingSettings.NLogConfigurationPath);
return(new NLogAdapter(operationContext.TracingContext.Logger, configuration));
}
private void LogMachinePerformanceStatistics(OperationContext context)
{
var machineStatistics = _performanceCollector.GetMachinePerformanceStatistics();
// Tracing a few things as metrics.
Tracer.TrackMetric(context, $"MachinePerf_{nameof(machineStatistics.ProcessThreadCount)}", machineStatistics.ProcessThreadCount);
Tracer.TrackMetric(context, $"MachinePerf_{nameof(machineStatistics.ThreadPoolWorkerThreads)}", machineStatistics.ThreadPoolWorkerThreads);
Tracer.Info(context, "MachinePerformanceStatistics: " + machineStatistics.ToTracingString());
if (GlobalInfoStorage.GetGlobalInfo(GlobalInfoKey.LocalLocationStoreRole) == "Master")
{
machineStatistics.CollectMetrics((name, value) =>
{
context.TrackMetric(name, value, "CacheMasterPerfStats");
});
}
}
