/// <summary>
/// Creates an instance of the <see cref="AgentManager"/> class./>
/// </summary>
/// <remarks>
/// The agent should be constructed as early as possible in order to perform
/// initialization of the logging system.
/// </remarks>
private AgentManager()
{
_container = AgentServices.GetContainer();
AgentServices.RegisterServices(_container);
// Resolve IConfigurationService (so that it starts listening to config changes) before loading newrelic.config
_container.Resolve <IConfigurationService>();
var config = ConfigurationLoader.Initialize();
LoggerBootstrapper.ConfigureLogger(config.LogConfig);
AssertAgentEnabled(config);
EventBus <KillAgentEvent> .Subscribe(OnShutdownAgent);
//Initialize the extensions loader with extensions folder based on the the install path
ExtensionsLoader.Initialize(AgentInstallConfiguration.InstallPathExtensionsDirectory);
// Resolve all services once we've ensured that the agent is enabled
// The AgentApiImplementation needs to be resolved before the WrapperService, because
// resolving the WrapperService triggers an agent connect but it doesn't instantiate
// the CustomEventAggregator, so we need to resolve the AgentApiImplementation to
// get the CustomEventAggregator instantiated before the connect process is triggered.
// If that doesn't happen the CustomEventAggregator will not start its harvest timer
// when the agent connect response comes back. The agent DI, startup, and connect
// process really needs to be refactored so that it's more explicit in its behavior.
var agentApi = _container.Resolve <IAgentApi>();
_wrapperService = _container.Resolve <IWrapperService>();
//We need to attempt to auto start the agent once all services have resolved
_container.Resolve <IConnectionManager>().AttemptAutoStart();
AgentServices.StartServices(_container);
// Setup the internal API first so that AgentApi can use it.
InternalApi.SetAgentApiImplementation(agentApi);
AgentApi.SetSupportabilityMetricCounters(_container.Resolve <IApiSupportabilityMetricCounters>());
Initialize();
_isInitialized = true;
}