private boolean initializeDataSource(DataSourceVO<?> vo) {
synchronized (runningDataSources) {
// If the data source is already running, just quit.
if (isDataSourceRunning(vo.getId())) return false;
// Ensure that the data source is enabled.
Assert.isTrue(vo.isEnabled());
// Create and initialize the runtime version of the data source.
DataSourceRT dataSource = vo.createDataSourceRT();
dataSource.initialize();
// Add it to the list of running data sources.
runningDataSources.add(dataSource);
// Add the enabled points to the data source.
List<DataPointVO> dataSourcePoints = new DataPointDao().getDataPoints(vo.getId(), null);
for (DataPointVO dataPoint : dataSourcePoints) {
if (dataPoint.isEnabled()) startDataPoint(dataPoint);
}
LOG.info("Data source '" + vo.getName() + "' initialized");
return true;
}
}
public void saveDataSource(DataSourceVO<?> vo) {
// If the data source is running, stop it.
stopDataSource(vo.getId());
// In case this is a new data source, we need to save to the database first so that it has a
// proper id.
new DataSourceDao().saveDataSource(vo);
// If the data source is enabled, start it.
if (vo.isEnabled()) {
if (initializeDataSource(vo)) startDataSourcePolling(vo);
}
}
//
// Lifecycle
public synchronized void initialize(boolean safe) {
if (started) throw new ShouldNeverHappenException("RuntimeManager already started");
// Set the started indicator to true.
started = true;
// Get the RTM defs from modules
List<RuntimeManagerDefinition> defs =
ModuleRegistry.getDefinitions(RuntimeManagerDefinition.class);
Collections.sort(
defs,
new Comparator<RuntimeManagerDefinition>() {
@Override
public int compare(RuntimeManagerDefinition def1, RuntimeManagerDefinition def2) {
return def1.getInitializationPriority() - def2.getInitializationPriority();
}
});
// Start everything with priority up to and including 4.
int rtmdIndex = startRTMDefs(defs, safe, 0, 4);
// Initialize data sources that are enabled. Start by organizing all enabled data sources by
// start priority.
DataSourceDao dataSourceDao = new DataSourceDao();
List<DataSourceVO<?>> configs = dataSourceDao.getDataSources();
Map<DataSourceDefinition.StartPriority, List<DataSourceVO<?>>> priorityMap =
new HashMap<DataSourceDefinition.StartPriority, List<DataSourceVO<?>>>();
for (DataSourceVO<?> config : configs) {
if (config.isEnabled()) {
if (safe) {
config.setEnabled(false);
dataSourceDao.saveDataSource(config);
} else if (config.getDefinition() != null) {
List<DataSourceVO<?>> priorityList =
priorityMap.get(config.getDefinition().getStartPriority());
if (priorityList == null) {
priorityList = new ArrayList<DataSourceVO<?>>();
priorityMap.put(config.getDefinition().getStartPriority(), priorityList);
}
priorityList.add(config);
}
}
}
// Initialize the prioritized data sources. Start the polling later.
List<DataSourceVO<?>> pollingRound = new ArrayList<DataSourceVO<?>>();
for (DataSourceDefinition.StartPriority startPriority :
DataSourceDefinition.StartPriority.values()) {
List<DataSourceVO<?>> priorityList = priorityMap.get(startPriority);
if (priorityList != null) {
for (DataSourceVO<?> config : priorityList) {
if (initializeDataSource(config)) pollingRound.add(config);
}
}
}
// Tell the data sources to start polling. Delaying the polling start gives the data points a
// chance to
// initialize such that point listeners in meta points and set point handlers can run properly.
for (DataSourceVO<?> config : pollingRound) startDataSourcePolling(config);
// Run everything else.
rtmdIndex = startRTMDefs(defs, safe, rtmdIndex, Integer.MAX_VALUE);
// Start the publishers that are enabled
PublisherDao publisherDao = new PublisherDao();
List<PublisherVO<? extends PublishedPointVO>> publishers = publisherDao.getPublishers();
for (PublisherVO<? extends PublishedPointVO> vo : publishers) {
if (vo.isEnabled()) {
if (safe) {
vo.setEnabled(false);
publisherDao.savePublisher(vo);
} else startPublisher(vo);
}
}
// Schedule the Backup Task if necessary
// No way to set the default value for Bools in SystemSettingsDao so must do here
if (SystemSettingsDao.getBooleanValue(SystemSettingsDao.BACKUP_ENABLED, true)) {
BackupWorkItem.schedule();
}
}