com.google.gerrit.server.plugins.PluginScannerThread Maven / Gradle / Ivy
// Copyright (C) 2012 The Android Open Source Project
//
// 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 com.google.gerrit.server.plugins;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
class PluginScannerThread extends Thread {
private final CountDownLatch done = new CountDownLatch(1);
private final PluginLoader loader;
private final long checkFrequencyMillis;
PluginScannerThread(PluginLoader loader, long checkFrequencyMillis) {
this.loader = loader;
this.checkFrequencyMillis = checkFrequencyMillis;
setDaemon(true);
setName("PluginScanner");
}
@Override
public void run() {
for (; ; ) {
try {
if (done.await(checkFrequencyMillis, TimeUnit.MILLISECONDS)) {
return;
}
} catch (InterruptedException e) {
// Ignored
}
loader.rescan();
}
}
void end() {
done.countDown();
try {
join();
} catch (InterruptedException e) {
// Ignored
}
}
}