public GGMonitoredSourceInfo buildGGMonitoredSourceInfo(
LogicalSourceStaticConfig sourceConfig, PhysicalSourceStaticConfig pConfig)
throws DatabusException, InvalidConfigException {
// udpate partition mapping
PartitionFunction partitionFunction =
GGEventGenerationFactory.buildPartitionFunction(sourceConfig);
_partitionFunctionHashMap.put((int) sourceConfig.getId(), partitionFunction);
EventSourceStatistics statisticsBean = new EventSourceStatistics(sourceConfig.getName());
GGMonitoredSourceInfo sourceInfo =
new GGMonitoredSourceInfo(sourceConfig.getId(), sourceConfig.getName(), statisticsBean);
registerMbeans(sourceInfo);
return sourceInfo;
}
@Override
public void run() {
ConcurrentAppendableCompositeFileInputStream compositeInputStream = null;
try {
if (_xmlCallback == null) _xmlCallback = new HandleXmlCallback();
String xmlDir = GGEventGenerationFactory.uriToGGDir(_pConfig.getUri());
String xmlPrefix = GGEventGenerationFactory.uriToXmlPrefix(_pConfig.getUri());
File file = new File(xmlDir);
if (!file.exists() || !file.isDirectory()) {
_log.fatal(
"Unable to load the directory: "
+ xmlDir
+ " it doesn't seem to be a valid directory");
throw new DatabusException("Invalid trail file directory");
}
boolean parseError = false;
do {
try {
_log.info(
"Using xml directory : " + xmlDir + " and using the xml Prefix : " + xmlPrefix);
compositeInputStream = locateScnInTrailFile(xmlDir, xmlPrefix);
compositeInputStream.setGGParserStats(_ggParserStats);
_log.info("Attempting to start the parser...");
// Not a retry, first time the producer is started, in which case, start the eventBuffer
// with the appropriate scn
if (!parseError) {
_log.info("Starting dbusEventBuffer with _scn : " + _startPrevScn.get());
getEventBuffer().start(_startPrevScn.get());
} else {
_log.warn(
"Umm, looks like the parser had failed, this is an retry attempt using _scn: "
+ _scn.get());
_log.info("CompositeInputStream used:" + compositeInputStream);
}
StaxBuilder builder =
new StaxBuilder(
_schemaRegistryService,
wrapStreamWithXmlTags(compositeInputStream),
_pConfig,
_xmlCallback);
if (_log.isDebugEnabled())
_log.debug("CompositeInputStream used:" + compositeInputStream);
_parser = builder.getParser();
builder
.processXml(); // --> The call doesn't return after this (it starts processing the
// xml trail files), unless a shutdown is requested or an exception
// is thrown.
parseError =
false; // --> If this code path is executed, then the shutdown has been requested
} catch (XMLStreamException e) {
_ggParserStats.addParsingError();
// If the parser was in the middle of execution and an shutdown was issued, then an
// xmlstream exception is expected.
if (_shutdownRequested) {
parseError = false;
} else {
_log.error("Error while parsing the xml, will retry loading the parser", e);
_log.info("Last scn seen before the crash: " + _scn.get());
_log.info("CompositeInputStream used:" + compositeInputStream);
parseError = true;
}
} finally {
if (compositeInputStream != null) compositeInputStream.close();
}
} while (parseError); // TODO && retry count (add config to control number of retires)
} catch (RuntimeException e) {
_log.info("CompositeInputStream used:" + compositeInputStream);
_log.error("Error while parsing data, compositeInputStream shutting down the relay", e);
_currentState = GoldenGateEventProducer.State.SHUTDOWN;
throw e;
} catch (Exception e) {
_log.info("CompositeInputStream used:" + compositeInputStream);
_log.error("Error while parsing data, compositeInputStream shutting down the relay", e);
_currentState = GoldenGateEventProducer.State.SHUTDOWN;
return;
}
}