/*
 * Copyright 2019 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.kie.kogito.services.uow;

import java.util.function.Supplier;

import org.kie.kogito.process.ProcessInstanceExecutionException;
import org.kie.kogito.uow.UnitOfWork;
import org.kie.kogito.uow.UnitOfWorkManager;

public class UnitOfWorkExecutor {

    private UnitOfWorkExecutor() {

    }

    public static <T> T executeInUnitOfWork(UnitOfWorkManager uowManager, Supplier<T> supplier) {
        T result = null;
        UnitOfWork uow = uowManager.newUnitOfWork();

        try {
            uow.start();

            result = supplier.get();
            uow.end();

            return result;
        } catch (ProcessInstanceExecutionException e) {
            uow.end();

            throw e;
        } catch (Exception e) {
            uow.abort();
            if (e instanceof RuntimeException) {
                throw (RuntimeException) e;
            } else {
                throw new RuntimeException(e);
            }
        }

    }
}
