/// <summary>
/// Initializes a new <see cref="MessageJournalConsumer"/> with the specified configuration
/// and services
/// </summary>
/// <remarks>
/// Message journal consumers created with this constructor use an internal <see cref="Bus"/>
/// instance based on the <see cref="LoopbackTransportService"/> and <see cref="VirtualMessageQueueingService"/>
/// to minimize overhead of message processing.
/// </remarks>
/// <param name="configuration">The bus configuration</param>
/// <param name="options">(Optional) Options to customize the behavior of the message journal consumer</param>
/// <exception cref="ArgumentNullException">Thrown if any of the parameters are <c>null</c></exception>
public MessageJournalConsumer(IPlatibusConfiguration configuration, MessageJournalConsumerOptions options)
{
if (configuration == null)
{
throw new ArgumentNullException(nameof(configuration));
}
_diagnosticService = configuration.DiagnosticService;
_messageJournal = configuration.MessageJournal ?? throw new ConfigurationErrorsException("Message journal is required");
_bus = InitBus(configuration);
var myOptions = options ?? new MessageJournalConsumerOptions();
_filter = myOptions.Filter;
_batchSize = myOptions.BatchSize > 0
? myOptions.BatchSize
: MessageJournalConsumerOptions.DefaultBatchSize;
_rethrowExceptions = myOptions.RethrowExceptions;
_haltAtEndOfJournal = myOptions.HaltAtEndOfJournal;
_pollingInterval = myOptions.PollingInterval > TimeSpan.Zero
? myOptions.PollingInterval
: MessageJournalConsumerOptions.DefaultPollingInterval;
_progress = myOptions.Progress;
}
/// <summary>
/// Initializes a new <see cref="MessageJournalConsumer"/> with the specified configuration
/// and services
/// </summary>
/// <param name="bus">A configured and initialized bus instance that will be used to handle
/// incoming messages</param>
/// <param name="messageJournal">The message journal from which entries will be consumed</param>
/// <param name="options">(Optional) Options to customize the behavior of the message journal consumer</param>
/// <exception cref="ArgumentNullException">Thrown if any of the parameters are <c>null</c></exception>
public MessageJournalConsumer(IBus bus, IMessageJournal messageJournal, MessageJournalConsumerOptions options)
{
if (bus == null)
{
throw new ArgumentNullException(nameof(bus));
}
_diagnosticService = DiagnosticService.DefaultInstance;
_messageJournal = messageJournal ?? throw new ConfigurationErrorsException("Message journal is required");
_bus = Task.FromResult(bus);
var myOptions = options ?? new MessageJournalConsumerOptions();
_filter = myOptions.Filter;
_batchSize = myOptions.BatchSize > 0
? myOptions.BatchSize
: MessageJournalConsumerOptions.DefaultBatchSize;
_rethrowExceptions = myOptions.RethrowExceptions;
_haltAtEndOfJournal = myOptions.HaltAtEndOfJournal;
_pollingInterval = myOptions.PollingInterval > TimeSpan.Zero
? myOptions.PollingInterval
: MessageJournalConsumerOptions.DefaultPollingInterval;
_progress = myOptions.Progress;
}
