private void OnMessage(object sender, EventSource.MessageReceivedEventArgs e)
{
try
{
HandleMessage(e.EventName, e.Message.Data);
}
catch (JsonReadException ex)
{
_log.Error("LaunchDarkly service request failed or received invalid data: {0}",
LogValues.ExceptionSummary(ex));
var errorInfo = new DataSourceStatus.ErrorInfo
{
Kind = DataSourceStatus.ErrorKind.InvalidData,
Message = ex.Message,
Time = DateTime.Now
};
_updateSink.UpdateStatus(DataSourceState.Interrupted, errorInfo);
_eventSource.Restart(false);
}
catch (Exception ex)
{
LogHelpers.LogException(_log, "Unexpected error in stream processing", ex);
}
}
private string DescribeErrorCount(DataSourceStatus.ErrorInfo errorInfo, int count)
{
var errorDesc = errorInfo.StatusCode > 0 ?
string.Format("{0}({1})", errorInfo.Kind.Identifier(), errorInfo.StatusCode) :
errorInfo.Kind.Identifier();
return(string.Format("{0} ({1} {2})", errorDesc, count, count == 1 ? "time" : "times"));
}
private void OnMessage(object sender, EventSource.MessageReceivedEventArgs e)
{
try
{
HandleMessage(e.EventName, e.Message.DataUtf8Bytes.Data);
// The way the PreferDataAsUtf8Bytes option works in EventSource is that if the
// stream really is using UTF-8 encoding, the event data is passed to us directly
// in Message.DataUtf8Bytes as a byte array and does not need to be converted to
// a string. If the stream is for some reason using a different encoding, then
// EventSource reads the data as a string (automatically converted by .NET from
// whatever the encoding was), and then calling Message.DataUtf8Bytes converts
// that to UTF-8 bytes.
}
catch (JsonReadException ex)
{
_log.Error("LaunchDarkly service request failed or received invalid data: {0}",
LogValues.ExceptionSummary(ex));
var errorInfo = new DataSourceStatus.ErrorInfo
{
Kind = DataSourceStatus.ErrorKind.InvalidData,
Message = ex.Message,
Time = DateTime.Now
};
_dataSourceUpdates.UpdateStatus(DataSourceState.Interrupted, errorInfo);
_es.Restart(false);
}
catch (StreamStoreException)
{
if (!_storeStatusMonitoringEnabled)
{
if (!_lastStoreUpdateFailed)
{
_log.Warn("Restarting stream to ensure that we have the latest data");
}
_es.Restart(false);
}
_lastStoreUpdateFailed = true;
}
catch (Exception ex)
{
LogHelpers.LogException(_log, "Unexpected error in stream processing", ex);
_es.Restart(false);
}
}
private void RecordError(DataSourceStatus.ErrorInfo?newError)
{
if (!newError.HasValue)
{
return;
}
// Accumulate how many times each kind of error has occurred during the outage - use just the basic
// properties as the key so the map won't expand indefinitely
var basicErrorInfo = new DataSourceStatus.ErrorInfo
{
Kind = newError.Value.Kind,
StatusCode = newError.Value.StatusCode
};
if (_errorCounts.TryGetValue(basicErrorInfo, out var count))
{
_errorCounts[basicErrorInfo] = count + 1;
}
else
{
_errorCounts[basicErrorInfo] = 1;
}
}
