CloudSlang/cs-actions

/*
 * (c) Copyright 2024 Open Text
 * This program and the accompanying materials
 * are made available under the terms of the Apache License v2.0 which accompany this distribution.
 *
 * The Apache License is available 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.
 */
/*
 * Copyright 2024 Open Text
 * This program and the accompanying materials
 * are made available under the terms of the Apache License v2.0 which accompany this distribution.
 *
 * The Apache License is available 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 io.cloudslang.content.vmware.commons.utils;

import java.util.concurrent.*;

import static io.cloudslang.content.vmware.commons.utils.Constants.EXCEPTION_TIMED_OUT;

public class ExecutionTimeout {

    public static void runWithTimeout(final Runnable runnable, long timeout, TimeUnit timeUnit) throws Exception {
        runWithTimeout(new Callable<Object>() {
            @Override
            public Object call() throws Exception {
                runnable.run();
                return null;
            }
        }, timeout, timeUnit);
    }

    public static <T> T runWithTimeout(Callable<T> callable, long timeout, TimeUnit timeUnit) throws Exception {
        final ExecutorService executor = Executors.newSingleThreadExecutor();
        final Future<T> future = executor.submit(callable);
        executor.shutdown(); // This does not cancel the already-scheduled task.
        try {
            return future.get(timeout, timeUnit);
        }
        catch (TimeoutException e) {
            future.cancel(true);
            throw new TimeoutException(EXCEPTION_TIMED_OUT + timeout + " " + timeUnit.toString().toLowerCase());
        }
        catch (ExecutionException e) {
            //unwrap the root cause
            Throwable t = e.getCause();
            if (t instanceof Error) {
                throw (Error) t;
            } else if (t instanceof Exception) {
                throw (Exception) t;
            } else {
                throw new IllegalStateException(t);
            }
        }
    }
}