How to use

getSystemName

method

in

org.apache.samza.sql.interfaces.SqlIOConfig

SqlIOConfig inputSystemStreamConfig = ioResolver.fetchSourceInfo(source);
newConfig.put(String.format(CFG_FMT_SAMZA_STREAM_SYSTEM, inputSystemStreamConfig.getStreamId()),
  inputSystemStreamConfig.getSystemName());
newConfig.putAll(inputSystemStreamConfig.getConfig());
SqlIOConfig outputSystemStreamConfig = ioResolver.fetchSinkInfo(sink);
newConfig.put(String.format(CFG_FMT_SAMZA_STREAM_SYSTEM, outputSystemStreamConfig.getStreamId()),
  outputSystemStreamConfig.getSystemName());
newConfig.putAll(outputSystemStreamConfig.getConfig());

SqlIOConfig inputSystemStreamConfig = ioResolver.fetchSourceInfo(source);
newConfig.put(String.format(CFG_FMT_SAMZA_STREAM_SYSTEM, inputSystemStreamConfig.getStreamName()),
  inputSystemStreamConfig.getSystemName());
newConfig.putAll(inputSystemStreamConfig.getConfig());
SqlIOConfig outputSystemStreamConfig = ioResolver.fetchSinkInfo(sink);
newConfig.put(String.format(CFG_FMT_SAMZA_STREAM_SYSTEM, outputSystemStreamConfig.getStreamName()),
  outputSystemStreamConfig.getSystemName());
newConfig.putAll(outputSystemStreamConfig.getConfig());

 void translate(final TableScan tableScan, final TranslatorContext context,
   Map<String, DelegatingSystemDescriptor> systemDescriptors, Map<String, MessageStream<KV<Object, Object>>> inputMsgStreams) {
  StreamApplicationDescriptor streamAppDesc = context.getStreamAppDescriptor();
  List<String> tableNameParts = tableScan.getTable().getQualifiedName();
  String sourceName = SqlIOConfig.getSourceFromSourceParts(tableNameParts);

  Validate.isTrue(relMsgConverters.containsKey(sourceName), String.format("Unknown source %s", sourceName));
  SqlIOConfig sqlIOConfig = systemStreamConfig.get(sourceName);
  final String systemName = sqlIOConfig.getSystemName();
  final String streamName = sqlIOConfig.getStreamName();
  final String source = sqlIOConfig.getSource();

  KVSerde<Object, Object> noOpKVSerde = KVSerde.of(new NoOpSerde<>(), new NoOpSerde<>());
  DelegatingSystemDescriptor
    sd = systemDescriptors.computeIfAbsent(systemName, DelegatingSystemDescriptor::new);
  GenericInputDescriptor<KV<Object, Object>> isd = sd.getInputDescriptor(streamName, noOpKVSerde);

  MessageStream<KV<Object, Object>> inputStream = inputMsgStreams.computeIfAbsent(source, v -> streamAppDesc.getInputStream(isd));
  MessageStream<SamzaSqlRelMessage> samzaSqlRelMessageStream = inputStream.map(new ScanMapFunction(sourceName, queryId));
  context.registerMessageStream(tableScan.getId(), samzaSqlRelMessageStream);
 }
}

 private void sendToOutputStream(String queryLogicalId, String logicalOpId, String sinkStream, StreamApplicationDescriptor appDesc, TranslatorContext translatorContext, RelNode node, int queryId) {
  SqlIOConfig sinkConfig = sqlConfig.getOutputSystemStreamConfigsBySource().get(sinkStream);
  MessageStream<SamzaSqlRelMessage> stream = translatorContext.getMessageStream(node.getId());
  MessageStream<KV<Object, Object>> outputStream = stream.map(new OutputMapFunction(queryLogicalId, logicalOpId, sinkStream, queryId));
  Optional<TableDescriptor> tableDescriptor = sinkConfig.getTableDescriptor();
  if (!tableDescriptor.isPresent()) {
   KVSerde<Object, Object> noOpKVSerde = KVSerde.of(new NoOpSerde<>(), new NoOpSerde<>());
   String systemName = sinkConfig.getSystemName();
   DelegatingSystemDescriptor
     sd = systemDescriptors.computeIfAbsent(systemName, DelegatingSystemDescriptor::new);
   GenericOutputDescriptor<KV<Object, Object>> osd = sd.getOutputDescriptor(sinkConfig.getStreamId(), noOpKVSerde);
   OutputStream stm = outputMsgStreams.computeIfAbsent(sinkConfig.getSource(), v -> appDesc.getOutputStream(osd));
   outputStream.sendTo(stm);
  } else {
   Table outputTable = appDesc.getTable(tableDescriptor.get());
   if (outputTable == null) {
    String msg = "Failed to obtain table descriptor of " + sinkConfig.getSource();
    throw new SamzaException(msg);
   }
   outputStream.sendTo(outputTable);
  }
 }
}

final String systemName = sqlIOConfig.getSystemName();
final String streamId = sqlIOConfig.getStreamId();
final String source = sqlIOConfig.getSource();

final String systemName = sinkConfig.getSystemName();
final String streamName = sinkConfig.getStreamName();
final String source = sinkConfig.getSource();

 private void sendToOutputStream(StreamApplicationDescriptor appDesc, TranslatorContext context, RelNode node, int queryId) {
  SqlIOConfig sinkConfig = sqlConfig.getOutputSystemStreamConfigsBySource().get(SamzaSqlApplicationConfig.SAMZA_SYSTEM_LOG);
  MessageStream<SamzaSqlRelMessage> stream = context.getMessageStream(node.getId());
  MessageStream<KV<Object, Object>> outputStream = stream.map(new OutputMapFunction(SamzaSqlApplicationConfig.SAMZA_SYSTEM_LOG, queryId));
  Optional<TableDescriptor> tableDescriptor = sinkConfig.getTableDescriptor();
  if (!tableDescriptor.isPresent()) {
   KVSerde<Object, Object> noOpKVSerde = KVSerde.of(new NoOpSerde<>(), new NoOpSerde<>());
   String systemName = sinkConfig.getSystemName();
   DelegatingSystemDescriptor
     sd = systemDescriptors.computeIfAbsent(systemName, DelegatingSystemDescriptor::new);
   GenericOutputDescriptor<KV<Object, Object>> osd = sd.getOutputDescriptor(sinkConfig.getStreamName(), noOpKVSerde);
   if (OutputMapFunction.logOutputStream == null) {
    OutputMapFunction.logOutputStream = appDesc.getOutputStream(osd);
   }
   outputStream.sendTo(OutputMapFunction.logOutputStream);
  } else {
   Table outputTable = appDesc.getTable(tableDescriptor.get());
   if (outputTable == null) {
    String msg = "Failed to obtain table descriptor of " + sinkConfig.getSource();
    throw new SamzaException(msg);
   }
   outputStream.sendTo(outputTable);
  }
 }
}