/// <summary>
/// Initializes a new instance of the <see cref="KinesisFirehoseSink"/> class.
/// </summary>
/// <param name="context">The <see cref="IPlugInContext"/> that contains configuration info, logger, metrics etc.</param>
/// <param name="failoverSink">The <see cref="FailoverSink{AmazonKinesisFirehoseClient}"/> that defines failover sink class.</param>
/// <param name="failoverSinkRegionStrategy">The <see cref="FailoverStrategy{AmazonKinesisFirehoseClient}"/> that defines failover sink region selection strategy.</param>
public KinesisFirehoseSink(
IPlugInContext context,
FailoverSink <AmazonKinesisFirehoseClient> failoverSink,
FailoverStrategy <AmazonKinesisFirehoseClient> failoverSinkRegionStrategy)
: this(context, failoverSinkRegionStrategy.GetPrimaryRegionClient()) // Setup Kinesis Firehose Client with Primary Region
{
// Parse or default
// Max wait interval between failback retry
if (!int.TryParse(_config[ConfigConstants.MAX_FAILBACK_RETRY_INTERVAL_IN_MINUTES], out _maxFailbackRetryIntervalInMinutes))
{
_maxFailbackRetryIntervalInMinutes = ConfigConstants.DEFAULT_MIN_WAIT_BEFORE_REGION_FAILBACK_RETRY_IN_MINUTES;
}
else if (_maxFailbackRetryIntervalInMinutes < ConfigConstants.DEFAULT_MIN_WAIT_BEFORE_REGION_FAILBACK_RETRY_IN_MINUTES)
{
throw new ArgumentException(String.Format("Invalid \"{0}\" value, please provide positive integer greator than \"{1}\".",
ConfigConstants.MAX_FAILBACK_RETRY_INTERVAL_IN_MINUTES, ConfigConstants.DEFAULT_MIN_WAIT_BEFORE_REGION_FAILBACK_RETRY_IN_MINUTES));
}
// Failover Sink
_failoverSink = failoverSink;
_failoverSinkEnabled = true;
// Failover Sink Region Strategy
_failoverSinkRegionStrategy = failoverSinkRegionStrategy;
// Setup Primary Region Failback Timer
_primaryRegionFailbackTimer = new System.Timers.Timer(_maxFailbackRetryIntervalInMinutes * 60 * 1000);
_primaryRegionFailbackTimer.Elapsed += new ElapsedEventHandler(FailbackToPrimaryRegion);
_primaryRegionFailbackTimer.AutoReset = true;
_primaryRegionFailbackTimer.Start();
}
/// <inheritdoc/>
public TAWSClient FailbackToPrimaryRegion(Throttle throttle)
{
_logger?.LogDebug($"FailoverSink id {Id} is trying to fail back to primary region.");
// Setup client with Primary Region
var client = _failoverSinkRegionStrategy.GetPrimaryRegionClient();
if (client is not null)
{
// Reset Throttle
throttle.SetSuccess();
_logger?.LogInformation($"FailoverSink id {Id} failed back successfully to primary region {_failoverSinkRegionStrategy.GetCurrentRegion().Region.SystemName}.");
return(client);
}
else
{
_logger?.LogDebug($"FailoverSink id {Id} fail back to primary region unsuccessful, primary region currently is down or in use.");
}
return(null);
}
