org.owasp.dependencycheck.utils.WriteLockCleanupHook Maven / Gradle / Ivy
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dependency-check-core is the engine and reporting tool used to identify and report if there are any known, publicly disclosed vulnerabilities in the scanned project's dependencies. The engine extracts meta-data from the dependencies and uses this to do fuzzy key-word matching against the Common Platfrom Enumeration (CPE), if any CPE identifiers are found the associated Common Vulnerability and Exposure (CVE) entries are added to the generated report.
/*
* This file is part of dependency-check-core.
*
* 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.
*
* Copyright (c) 2017 Jeremy Long. All Rights Reserved.
*/
package org.owasp.dependencycheck.utils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* A cleanup hook that will register with the JVM to remove the WriteLock file
* during an unexpected shutdown.
*
* @author Jeremy Long
*/
public class WriteLockCleanupHook extends WriteLockShutdownHook {
/**
* A reference to the lock file.
*/
private WriteLock lock;
/**
* The logger.
*/
private static final Logger LOGGER = LoggerFactory.getLogger(WriteLockCleanupHook.class);
/**
* Add the shutdown hook.
*
* @param lock the lock object
*/
@Override
public void add(WriteLock lock) {
this.lock = lock;
Runtime.getRuntime().addShutdownHook(this);
}
/**
* Removes the shutdown hook.
*/
@Override
public void remove() {
try {
Runtime.getRuntime().removeShutdownHook(this);
} catch (IllegalStateException ex) {
LOGGER.trace("ignore as we are likely shutting down", ex);
}
}
/**
* Releases the custom h2 lock file used by dependency-check.
*/
@Override
public void run() {
if (lock != null) {
lock.close();
lock = null;
}
}
}