/// <summary>
/// Creates an engine with the specified application state and service provider.
/// </summary>
/// <param name="applicationState">The state of the application (or <c>null</c> for an empty application state).</param>
/// <param name="configuration">The application configuration.</param>
/// <param name="serviceCollection">The service collection (or <c>null</c> for an empty default service collection).</param>
public Engine(ApplicationState applicationState, IConfiguration configuration, IServiceCollection serviceCollection)
{
_pipelines = new PipelineCollection(this);
ApplicationState = applicationState ?? new ApplicationState(null, null, null);
Settings = new ReadOnlyConfigurationSettings(configuration ?? new ConfigurationRoot(Array.Empty <IConfigurationProvider>()));
_serviceScope = GetServiceScope(serviceCollection);
_logger = Services.GetRequiredService <ILogger <Engine> >();
DocumentFactory = new DocumentFactory(Settings);
_diagnosticsTraceListener = new DiagnosticsTraceListener(_logger);
System.Diagnostics.Trace.Listeners.Add(_diagnosticsTraceListener);
}
/// <summary>
/// Creates an engine with the specified application state, configuration, and service provider.
/// </summary>
/// <param name="applicationState">The state of the application (or <c>null</c> for an empty application state).</param>
/// <param name="serviceCollection">The service collection (or <c>null</c> for an empty default service collection).</param>
/// <param name="configurationOverrides">Values that should override configuration values.</param>
/// <param name="configuration">The application configuration.</param>
public Engine(ApplicationState applicationState, IServiceCollection serviceCollection, IConfiguration configuration, IDictionary <string, object> configurationOverrides)
{
_pipelines = new PipelineCollection(this);
ApplicationState = applicationState ?? new ApplicationState(null, null, null);
ScriptHelper = new ScriptHelper(this);
Settings = new ReadOnlyConfigurationSettings(
this,
configuration ?? new ConfigurationRoot(Array.Empty <IConfigurationProvider>()),
configurationOverrides);
_serviceScope = GetServiceScope(serviceCollection);
_logger = Services.GetRequiredService <ILogger <Engine> >();
DocumentFactory = new DocumentFactory(this, Settings);
_diagnosticsTraceListener = new DiagnosticsTraceListener(_logger);
System.Diagnostics.Trace.Listeners.Add(_diagnosticsTraceListener);
// Add the service-based pipelines as late as possible so other services have been configured
AddServicePipelines();
}
