/// <summary>
/// Configures circuit breaker.
/// </summary>
private void ConfigureCircuitBreaker()
{
void OnBreak(Exception exception, TimeSpan timespan)
{
//recreate secondary sender
if (SecondaryClient == null)
{
SecondaryClient = CreateClient(_secondaryServiceBusConnectionString);
}
//kill primary sender
PrimaryClient.CloseAsync().ConfigureAwait(false).GetAwaiter().GetResult();
PrimaryClient = null;
_logger?.LogWarning(exception, "Switched from primary to secondary service bus sender");
}
void OnHalfOpen()
{
//recreate primary sender
if (PrimaryClient == null)
{
PrimaryClient = CreateClient(_primaryServiceBusConnectionString);
}
//kill secondary
SecondaryClient.CloseAsync().ConfigureAwait(false).GetAwaiter().GetResult();
SecondaryClient = null;
_logger?.LogWarning("Switched back from secondary to primary service bus sender");
}
void OnReset()
{
_logger?.LogInformation("Circuit breaker was reset.");
}
_circuitBreaker = Policy
.Handle <Exception>()
.CircuitBreakerAsync(ExceptionsAllowedBeforeBreaking, TimeSpan.FromMilliseconds(TimeOutIfBreaksInMilliseconds), OnBreak, OnReset, OnHalfOpen);
}
/// <summary>
/// Cleans up (un)managed resources.
/// </summary>
/// <param name="disposing"></param>
protected virtual void Dispose(bool disposing)
{
PrimaryClient?.CloseAsync().ConfigureAwait(false).GetAwaiter().GetResult();
SecondaryClient?.CloseAsync().ConfigureAwait(false).GetAwaiter().GetResult();
}
