/**
* Executes ETL based on a specified configuration.
*
* @param indicator progress indicator to use.
* @return execution statistics for ETL execution.
* @throws EtlExecutorException if ETL fails.
*/
@ThreadSafe
public ExecutionStatistics execute(final ProgressIndicator indicator)
throws EtlExecutorException {
EtlContext ctx = null;
JmxEtlManager etlManager = null;
try {
ctx = prepare(indicator);
if (jmxEnabled) {
etlManager = new JmxEtlManager(ctx);
etlManager.register();
}
execute(ctx);
ctx.getProgressCallback().step(5, "Commiting transactions");
commitAll(ctx);
} catch (Throwable e) {
if (ctx != null) {
rollbackAll(ctx);
}
throw new EtlExecutorException(e);
} finally {
if (ctx != null) {
closeAll(ctx);
ctx.getStatisticsBuilder().etlComplete();
ctx.getProgressCallback().complete();
}
if (etlManager != null) {
etlManager.unregister();
}
}
return ctx.getStatisticsBuilder().getStatistics();
}
private void execute(final EtlContext ctx) {
final ProgressCallback oldProgress = ctx.getProgressCallback();
final ProgressCallback p = oldProgress.fork(85, 100);
final ProgressCallback p2 = p.fork(100);
ctx.setProgressCallback(p2);
ctx.session.execute(ctx);
p.complete();
ctx.setProgressCallback(oldProgress);
}
/**
* Prepares the scripts context.
*
* @param indicator progress indicator to use.
* @return prepared scripts context.
*/
protected EtlContext prepare(final ProgressIndicator indicator) {
EtlContext ctx = new EtlContext(!suppressStatistics);
ctx.getStatisticsBuilder().etlStarted();
ctx.setBaseURL(configuration.getDocumentUrl());
ctx.setProgressCallback(new ProgressCallback(100, indicator));
final ProgressCallback progress = ctx.getProgressCallback();
progress.step(1, "Initializing properties");
ctx.setProperties(configuration.getParameters());
ctx.setProgressCallback(progress.fork(9, 100));
ctx.session = new Session(configuration, ctx);
ctx.getProgressCallback().complete();
ctx.setProgressCallback(progress); // Restoring
return ctx;
}
