Examples with GetPreviousValues org.apache.nifi.admin.service.action.GetPreviousValues used on opensource projects

Example 1 with GetPreviousValues

use of org.apache.nifi.admin.service.action.GetPreviousValues in project nifi by apache.

the class StandardAuditService method getPreviousValues.

@Override
public Map<String, List<PreviousValue>> getPreviousValues(String componentId) {
    Transaction transaction = null;
    Map<String, List<PreviousValue>> previousValues = null;
    readLock.lock();
    try {
        // start the transaction
        transaction = transactionBuilder.start();
        // seed the accounts
        GetPreviousValues getActions = new GetPreviousValues(componentId);
        previousValues = transaction.execute(getActions);
        // commit the transaction
        transaction.commit();
    } catch (TransactionException | DataAccessException te) {
        rollback(transaction);
        throw new AdministrationException(te);
    } catch (Throwable t) {
        rollback(transaction);
        throw t;
    } finally {
        closeQuietly(transaction);
        readLock.unlock();
    }
    return previousValues;
}