/// <summary>
/// Sets the <see cref="Status"/> property and raised the <see cref="StatusChanged"/> event
/// </summary>
/// <param name="requestId">The requestId of the recovery request which caused the change or a null reference</param>
/// <param name="newStatus">The <see cref="ProducerRecoveryStatus"/> specifying the new status</param>
/// <remarks>Should be used only within locking</remarks>
private void SetStatusAndRaiseEvent(long?requestId, ProducerRecoveryStatus newStatus)
{
var oldStatus = Status;
if (Status == newStatus)
{
ExecutionLog.LogDebug($"{Producer.Name}: Attempting to set status to an existing value {Status}. Aborting ...");
return;
}
ExecutionLog.LogInformation($"{Producer.Name} Status changed from {oldStatus} to {newStatus}.");
Status = newStatus;
_producer.SetProducerDown(newStatus != ProducerRecoveryStatus.Completed);
Task.Run(() =>
{
try
{
_semaphoreStatusChange.Wait();
StatusChanged?.Invoke(this, new TrackerStatusChangeEventArgs(requestId, oldStatus, newStatus));
}
catch (Exception ex)
{
ExecutionLog.LogError(ex, $"{Producer.Name} Status change event failed.");
}
finally
{
_semaphoreStatusChange.ReleaseSafe();
}
});
}
/// <summary>
/// Initializes a new instance of the <see cref="ProducerRecoveryManager"/> class
/// </summary>
/// <param name="producer">A <see cref="IProducer"/> for which status is tracked</param>
/// <param name="recoveryOperation">A <see cref="IRecoveryOperation"/> used to issue and track recovery operations</param>
/// <param name="timestampTracker">A <see cref="ITimestampTracker"/> used to track message timings</param>
internal ProducerRecoveryManager(IProducer producer, IRecoveryOperation recoveryOperation, ITimestampTracker timestampTracker)
{
Guard.Argument(producer, nameof(producer)).NotNull();
Guard.Argument(recoveryOperation, nameof(recoveryOperation)).NotNull();
Guard.Argument(timestampTracker, nameof(timestampTracker)).NotNull();
Producer = producer;
_producer = (Producer)producer;
_recoveryOperation = recoveryOperation;
_timestampTracker = timestampTracker;
Status = ProducerRecoveryStatus.NotStarted;
}
/// <summary>
/// Initializes a new instance of the <see cref="ProducerRecoveryManager"/> class
/// </summary>
/// <param name="producer">A <see cref="IProducer"/> for which status is tracked</param>
/// <param name="recoveryOperation">A <see cref="IRecoveryOperation"/> used to issue and track recovery operations</param>
/// <param name="timestampTracker">A <see cref="ITimestampTracker"/> used to track message timings</param>
internal ProducerRecoveryManager(IProducer producer, IRecoveryOperation recoveryOperation, ITimestampTracker timestampTracker)
{
Contract.Requires(producer != null);
Contract.Requires(recoveryOperation != null);
Contract.Requires(timestampTracker != null);
Producer = producer;
_producer = (Producer)producer;
_recoveryOperation = recoveryOperation;
_timestampTracker = timestampTracker;
Status = ProducerRecoveryStatus.NotStarted;
}
/// <summary>
/// Initializes a new instance of the <see cref="ProducerRecoveryManager"/> class
/// </summary>
/// <param name="producer">A <see cref="IProducer"/> for which status is tracked</param>
/// <param name="recoveryOperation">A <see cref="IRecoveryOperation"/> used to issue and track recovery operations</param>
/// <param name="timestampTracker">A <see cref="ITimestampTracker"/> used to track message timings</param>
/// <param name="minIntervalBetweenRecoveryRequests">The minimal interval between recovery requests initiated by alive messages (seconds)</param>
internal ProducerRecoveryManager(IProducer producer, IRecoveryOperation recoveryOperation, ITimestampTracker timestampTracker, int minIntervalBetweenRecoveryRequests)
{
Guard.Argument(producer, nameof(producer)).NotNull();
Guard.Argument(recoveryOperation, nameof(recoveryOperation)).NotNull();
Guard.Argument(timestampTracker, nameof(timestampTracker)).NotNull();
Producer = producer;
_producer = (Producer)producer;
_recoveryOperation = recoveryOperation;
_timestampTracker = timestampTracker;
_minIntervalBetweenRecoveryRequests = minIntervalBetweenRecoveryRequests;
Status = ProducerRecoveryStatus.NotStarted;
_lastRecoveryMessage = DateTime.Now;
_connectionDownTimestamp = DateTime.MinValue;
}
/// <summary>
/// Sets the <see cref="Status"/> property and raised the <see cref="StatusChanged"/> event
/// </summary>
/// <param name="requestId">The requestId of the recovery request which caused the change or a null reference</param>
/// <param name="newStatus">The <see cref="ProducerRecoveryStatus"/> specifying the new status</param>
/// <remarks>Should be used only within locking</remarks>
private void SetStatusAndRaiseEvent(long?requestId, ProducerRecoveryStatus newStatus)
{
var oldStatus = Status;
if (Status == newStatus)
{
ExecutionLog.LogDebug($"{Producer.Name}: Attempting to set status to an existing value {Status}. Aborting ...");
return;
}
ExecutionLog.LogInformation($"{Producer.Name} Status changed from {Status} to {newStatus}.");
Status = newStatus;
_producer.SetProducerDown(newStatus != ProducerRecoveryStatus.Completed);
Task.Run(() =>
{
StatusChanged?.Invoke(this, new TrackerStatusChangeEventArgs(requestId, oldStatus, newStatus));
});
}
/// <summary>
/// Initializes a new instance of the <see cref="TrackerStatusChangeEventArgs"/> class.
/// </summary>
/// <param name="requestId">
/// The <see cref="long"/> specifying the id of the requestId of the recovery operation which caused this change,
/// or a null reference if the change was not by a recovery request.
/// </param>
/// <param name="oldStatus">The <see cref="ProducerRecoveryStatus"/> specifying the status of the tracker before the change.</param>
/// <param name="newStatus">The <see cref="ProducerRecoveryStatus"/> specifying the status of the tracker after the change.</param>
public TrackerStatusChangeEventArgs(long?requestId, ProducerRecoveryStatus oldStatus, ProducerRecoveryStatus newStatus)
{
RequestId = requestId;
OldStatus = oldStatus;
NewStatus = newStatus;
}
