public AppInsightsLoggerProvider(
IConfiguration config,
ILogger logger)
{
_config = config;
_logger = logger;
Client = new TelemetryClient();
var appInsightsLoggingConfig = new AppInsightsLoggingConfig();
config.GetSection(AppInsightsLoggingConfig.ApplicationInsightsSection).Bind(appInsightsLoggingConfig);
Client.InstrumentationKey = appInsightsLoggingConfig.InstrumentationKey;
// Load in the level map
var change = config.GetReloadToken();
change.RegisterChangeCallback(ConfigUpdated, null);
LoadConfiguration(_logger);
}
/// <summary>
/// Initialize AppInsights pipeline: read config and enable sinks for logging
/// </summary>
/// <param name="config"></param>
/// <param name="initaInitializers"></param>
/// <returns></returns>
public static async Task Initialize(IConfiguration config, ILogger logger, IServiceProvider serviceProvider)
{
// AppInsights Config
var configAppInsights = config.GetSection(AppInsightsLoggingConfig.ApplicationInsightsSection);
var appInsightsLoggingConfig = new AppInsightsLoggingConfig();
configAppInsights.Bind(appInsightsLoggingConfig);
// >>>>> Use the custom in-memory pipeline publishing channel
// Config for InMemoryPublishingChannel
var configInMemoryPublishingChannel = configAppInsights
.GetSection(AppInsightsLoggingConfig.InMemoryPublishingChannelSection);
TelemetryConfiguration.Active.TelemetryChannel =
new InMemoryPublishingChannel(
configInMemoryPublishingChannel,
logger,
new Uri(appInsightsLoggingConfig.TelemetryServiceEndpoint),
CoreConstants.CustomPipelineKey);
// >>>>> Add each ITelemetryInitializer loaded from config via Reflection and calling Factory for ITelemetryInitializer
var telemetryInitializerSection = configAppInsights.GetSection(AppInsightsLoggingConfig.TelemetryInitializer);
foreach (var initializerEntry in telemetryInitializerSection.GetChildren())
{
var initializerEntryConfig = new AssemblyInfoConfig();
initializerEntry.Bind(initializerEntryConfig);
ITelemetryInitializerFactory factory;
try
{
// Using Reflection, get the ITelemetryInitializerFactory interface
var factoryType = Type.GetType(initializerEntryConfig.ClassAssembly, throwOnError: true);
factory = Activator.CreateInstance(factoryType) as ITelemetryInitializerFactory;
ITelemetryInitializer telemetryInitializer = await factory.CreateInitializer(initializerEntry, logger, serviceProvider);
TelemetryConfiguration.Active.TelemetryInitializers.Add(telemetryInitializer);
}
catch (Exception e)
{
logger?.LogError(0, e, nameof(Initialize));
}
}
// >>>>> Set up a custom app insights pipeline: add custom sinks
var aiClientBuilder = TelemetryConfiguration.Active.TelemetryProcessorChainBuilder;
// Get list from Config of IProcessorSinks, add them to the TelemetryProcessorChainBuilder
var processorSinksSection = configAppInsights.GetSection(AppInsightsLoggingConfig.TelemetryProcessorSinks);
foreach (var sinkSection in processorSinksSection.GetChildren())
{
var sinkConfig = new AssemblyInfoConfig();
sinkSection.Bind(sinkConfig);
ITelemetryProcessorSinkFactory factory;
try
{
// Using Reflection, get the ITelemetryProcessorSinkFactory interface
var factoryType = Type.GetType(sinkConfig.ClassAssembly, throwOnError: true);
factory = Activator.CreateInstance(factoryType) as ITelemetryProcessorSinkFactory;
await factory.UseProcessorSink(sinkSection, logger, aiClientBuilder);
}
catch (Exception e)
{
logger?.LogError(0, e, nameof(Initialize));
}
}
// Update the ai client configuration
aiClientBuilder.Build();
}