io.netty.handler.codec.http.multipart.DeleteFileOnExitHook Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
/*
* Copyright 2020 The Netty Project
*
* The Netty Project 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:
*
* https://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.netty.handler.codec.http.multipart;
import java.io.File;
import java.util.Collections;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
/**
* DeleteFileOnExitHook.
*/
final class DeleteFileOnExitHook {
private static final Set FILES = Collections.newSetFromMap(new ConcurrentHashMap());
private DeleteFileOnExitHook() {
}
static {
// DeleteOnExitHook must be the last shutdown hook to be invoked.
// Application shutdown hooks may add the first file to the
// delete on exit list and cause the DeleteOnExitHook to be
// registered during shutdown in progress.
Runtime.getRuntime().addShutdownHook(new Thread() {
@Override
public void run() {
runHook();
}
});
}
/**
* Remove from the pool to reduce space footprint.
*
* @param file tmp file path
*/
public static void remove(String file) {
FILES.remove(file);
}
/**
* Add to the hook and clean up when the program exits.
*
* @param file tmp file path
*/
public static void add(String file) {
FILES.add(file);
}
/**
* Check in the hook files.
*
* @param file target file
* @return true or false
*/
public static boolean checkFileExist(String file) {
return FILES.contains(file);
}
/**
* Clean up all the files.
*/
static void runHook() {
for (String filename : FILES) {
new File(filename).delete();
}
}
}