/**
* Adds a new data source to the repository.
*
* @param dsmInfo The meta information of the data source to be added.
*/
public void addDataSource(DataSourceMetaInfo dsmInfo) throws DataSourceException {
if (log.isDebugEnabled()) {
log.debug("Adding data source: " + dsmInfo.getName());
}
if (!dsmInfo.isSystem()) {
this.persistDataSource(dsmInfo);
}
this.registerDataSource(dsmInfo);
if (!dsmInfo.isSystem()) {
this.notifyClusterDSChange(dsmInfo.getName());
}
}
private void persistDataSource(DataSourceMetaInfo dsmInfo) throws DataSourceException {
try {
Element element =
DataSourceUtils.convertDataSourceMetaInfoToElement(dsmInfo, this.getDSMMarshaller());
DataSourceUtils.secureSaveElement(element);
Resource resource = this.getRegistry().newResource();
resource.setContentStream(DataSourceUtils.elementToInputStream(element));
this.getRegistry()
.put(
DataSourceConstants.DATASOURCES_REPOSITORY_BASE_PATH + "/" + dsmInfo.getName(),
resource);
} catch (Exception e) {
throw new DataSourceException(
"Error in persisting data source: " + dsmInfo.getName() + " - " + e.getMessage(), e);
}
}
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);
}
/**
* Tests Connection of the data source
*
* @param dsmInfo The meta information of the data source to be tested.
*/
public boolean testDataSourceConnection(DataSourceMetaInfo dsmInfo) throws DataSourceException {
if (log.isDebugEnabled()) {
log.debug("Testing connection of data source: " + dsmInfo.getName());
}
DataSourceReader dsReader =
DataSourceManager.getInstance().getDataSourceReader(dsmInfo.getDefinition().getType());
try {
return dsReader.testDataSourceConnection(
DataSourceUtils.elementToString(
(Element) dsmInfo.getDefinition().getDsXMLConfiguration()));
} catch (DataSourceException e) {
log.error(e.getMessage(), e);
throw e;
}
}
private Object createDataSourceObject(DataSourceMetaInfo dsmInfo, boolean isUseDataSourceFactory)
throws DataSourceException {
DataSourceReader dsReader =
DataSourceManager.getInstance().getDataSourceReader(dsmInfo.getDefinition().getType());
if (dsReader == null) {
throw new DataSourceException(
"A data source reader cannot be found for the type '"
+ dsmInfo.getDefinition().getType()
+ "'");
}
/* sets the current data source's (tenantId + ":" + name) as a thread local value
* so it can be read by data source readers */
DataSourceUtils.setCurrentDataSourceId(this.getTenantId() + ":" + dsmInfo.getName());
return dsReader.createDataSource(
DataSourceUtils.elementToString((Element) dsmInfo.getDefinition().getDsXMLConfiguration()),
isUseDataSourceFactory);
}