private void unregisterDataSource(String dsName) {
CarbonDataSource cds = this.getDataSource(dsName);
if (cds == null) {
return;
}
if (log.isDebugEnabled()) {
log.debug("Unregistering data source: " + dsName);
}
this.unregisterJNDI(cds.getDSMInfo());
this.dataSources.remove(dsName);
}
/**
* Unregisters and deletes the data source from the repository.
*
* @param dsName The data source name
*/
public void deleteDataSource(String dsName) throws DataSourceException {
if (log.isDebugEnabled()) {
log.debug("Deleting data source: " + dsName);
}
CarbonDataSource cds = this.getDataSource(dsName);
if (cds == null) {
throw new DataSourceException("Data source does not exist: " + dsName);
}
if (cds.getDSMInfo().isSystem()) {
throw new DataSourceException("System data sources cannot be deleted: " + dsName);
}
this.removePersistedDataSource(dsName);
this.unregisterDataSource(dsName);
this.notifyClusterDSChange(dsName);
}
private synchronized void registerDataSource(DataSourceMetaInfo dsmInfo)
throws DataSourceException {
/* if a data source is already registered with the given name, unregister it first */
CarbonDataSource currentCDS = this.getDataSource(dsmInfo.getName());
if (currentCDS != null) {
/* if the data source is a system data source, throw exception */
if (dsmInfo.isSystem()) {
throw new DataSourceException(
"System datasource " + dsmInfo.getName() + "can not be updated.");
}
this.unregisterDataSource(currentCDS.getDSMInfo().getName());
}
if (log.isDebugEnabled()) {
log.debug("Registering data source: " + dsmInfo.getName());
}
Object dsObject = null;
boolean isDataSourceFactoryReference = false;
DataSourceStatus dsStatus;
try {
JNDIConfig jndiConfig = dsmInfo.getJndiConfig();
if (jndiConfig != null) {
isDataSourceFactoryReference = jndiConfig.isUseDataSourceFactory();
}
dsObject = this.createDataSourceObject(dsmInfo, isDataSourceFactoryReference);
this.registerJNDI(dsmInfo, dsObject);
dsStatus = new DataSourceStatus(DataSourceStatusModes.ACTIVE, null);
} catch (Exception e) {
String msg =
"Error in registering data source: " + dsmInfo.getName() + " - " + e.getMessage();
log.error(msg, e);
dsStatus = new DataSourceStatus(DataSourceStatusModes.ERROR, msg);
}
/* Creating DataSource object , if dsObject is a Reference */
if (isDataSourceFactoryReference) {
dsObject = this.createDataSourceObject(dsmInfo, false);
}
CarbonDataSource cds = new CarbonDataSource(dsmInfo, dsStatus, dsObject);
this.dataSources.put(cds.getDSMInfo().getName(), cds);
}
private synchronized void updateDataSource(String dsName, boolean unregister)
throws DataSourceException {
String dsmPath = DataSourceConstants.DATASOURCES_REPOSITORY_BASE_PATH + "/" + dsName;
try {
DataSourceMetaInfo dsmInfo = this.getDataSourceMetaInfoFromRegistryPath(dsmPath);
CarbonDataSource currentCDS = this.getDataSource(dsName);
DataSourceMetaInfo currentDsmInfo = null;
if (currentCDS != null) {
currentDsmInfo = currentCDS.getDSMInfo();
}
if (unregister) {
this.unregisterDataSource(dsName);
} else {
if (DataSourceUtils.nullAllowEquals(dsmInfo, currentDsmInfo)) {
if (log.isDebugEnabled()) {
log.debug("No update change for data source: " + dsName);
}
return;
}
if (dsmInfo != null) {
this.registerDataSource(dsmInfo);
} else {
this.unregisterDataSource(dsName);
}
}
} catch (Exception e) {
throw new DataSourceException(
"Error in updating data source '"
+ dsName
+ "' from registry [remove:"
+ unregister
+ "]: "
+ e.getMessage(),
e);
}
}