org.dizitart.no2.NitriteShutDownHook Maven / Gradle / Ivy
/*
*
* Copyright 2017-2018 Nitrite author or authors.
*
* 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.dizitart.no2;
import lombok.extern.slf4j.Slf4j;
/**
* A JVM shutdown hook to close database properly before exiting for good.
*
* @author Anindya Chatterjee.
*/
@Slf4j
class NitriteShutDownHook extends Thread {
private Nitrite db;
NitriteShutDownHook(Nitrite db) {
this.db = db;
}
@Override
public void run() {
if (db != null && !db.isClosed()) {
try {
db.close();
} catch (Throwable t) {
// close the db immediately and discards
// any unsaved changes to avoid corruption
log.error("Error while database shutdown", t);
db.closeImmediately();
}
}
}
}