public void Send <K, V>(string topic, K key, V value, Headers headers, long timestamp, ISerDes <K> keySerializer, ISerDes <V> valueSerializer)
{
var k = key != null?keySerializer.Serialize(key, new SerializationContext(MessageComponentType.Key, topic, headers)) : null;
var v = value != null?valueSerializer.Serialize(value, new SerializationContext(MessageComponentType.Value, topic, headers)) : null;
try
{
producer?.Produce(
topic,
new Message <byte[], byte[]> {
Key = k, Value = v
},
(report) =>
{
if (report.Error.IsError)
{
StringBuilder sb = new StringBuilder();
sb.AppendLine($"{logPrefix}Error encountered sending record to topic {topic} for task {id} due to:");
sb.AppendLine($"{logPrefix}Error Code : {report.Error.Code.ToString()}");
sb.AppendLine($"{logPrefix}Message : {report.Error.Reason}");
if (IsFatalError(report))
{
sb.AppendLine($"{logPrefix}Written offsets would not be recorded and no more records would be sent since this is a fatal error.");
log.Error(sb.ToString());
throw new StreamsException(sb.ToString());
}
else if (IsRecoverableError(report))
{
sb.AppendLine($"{logPrefix}Written offsets would not be recorded and no more records would be sent since the producer is fenced, indicating the task may be migrated out");
log.Error(sb.ToString());
throw new TaskMigratedException(sb.ToString());
}
else
{
if (configuration.ProductionExceptionHandler(report) == ExceptionHandlerResponse.FAIL)
{
sb.AppendLine($"{logPrefix}Exception handler choose to FAIL the processing, no more records would be sent.");
log.Error(sb.ToString());
throw new ProductionException(sb.ToString());
}
else
{
sb.AppendLine($"{logPrefix}Exception handler choose to CONTINUE processing in spite of this error but written offsets would not be recorded.");
log.Error(sb.ToString());
}
}
}
else if (report.Status == PersistenceStatus.NotPersisted || report.Status == PersistenceStatus.PossiblyPersisted)
{
log.Warn($"{logPrefix}Record not persisted or possibly persisted: (timestamp {report.Message.Timestamp.UnixTimestampMs}) topic=[{topic}] partition=[{report.Partition}] offset=[{report.Offset}]. May config Retry configuration, depends your use case.");
}
else if (report.Status == PersistenceStatus.Persisted)
{
log.Debug($"{logPrefix}Record persisted: (timestamp {report.Message.Timestamp.UnixTimestampMs}) topic=[{topic}] partition=[{report.Partition}] offset=[{report.Offset}]");
}
});
}catch (ProduceException <byte[], byte[]> produceException)
{
if (IsRecoverableError(produceException.Error))
{
throw new TaskMigratedException($"Producer got fenced trying to send a record [{logPrefix}] : {produceException.Message}");
}
else
{
throw new StreamsException($"Error encountered trying to send record to topic {topic} [{logPrefix}] : {produceException.Message}");
}
}
}