/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.jooby.internal.aws;
import static javaslang.API.$;
import static javaslang.API.Case;
import static javaslang.API.Match;
import static javaslang.Predicates.instanceOf;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.Arrays;
import java.util.Optional;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javaslang.control.Try.CheckedRunnable;
public class AwsShutdownSupport implements CheckedRunnable {
/** The logging system. */
private final Logger log = LoggerFactory.getLogger(getClass());
private Object dep;
public AwsShutdownSupport(final Object dep) {
this.dep = dep;
}
@Override
public void run() throws Throwable {
if (dep == null) {
return;
}
try {
Optional<Method> shutdown = Arrays.stream(dep.getClass().getMethods())
.filter(m -> m.getName().startsWith("shutdown")
&& m.getParameterCount() == 0
&& Modifier.isPublic(m.getModifiers()))
.findFirst();
if (shutdown.isPresent()) {
log.debug("stopping {}", dep);
shutdown.get().invoke(dep);
} else {
log.debug("no shutdown method found for: {}", dep);
}
} catch (InvocationTargetException ex) {
throw Match(ex.getTargetException()).of(
Case(instanceOf(Exception.class), x -> x),
Case($(), x -> new IllegalStateException("shutdown result in error", x)));
} finally {
dep = null;
}
}
}