/*
* The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
* (the "License"). You may not use this work except in compliance with the License, which is
* available at www.apache.org/licenses/LICENSE-2.0
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
* either express or implied, as more fully set forth in the License.
*
* See the NOTICE file distributed with this work for information regarding copyright ownership.
*/
package alluxio.master.file.meta;
import org.junit.rules.TestRule;
import org.junit.runner.Description;
import org.junit.runners.model.Statement;
import org.powermock.reflect.Whitebox;
/**
* Rule for temporarily setting the TTL (time to live) checking interval.
*/
public final class TtlIntervalRule implements TestRule {
private final long mIntervalMs;
/**
* @param intervalMs the global checking interval (in ms) to temporarily set
*/
public TtlIntervalRule(long intervalMs) {
mIntervalMs = intervalMs;
}
@Override
public Statement apply(final Statement statement, Description description) {
return new Statement() {
@Override
public void evaluate() throws Throwable {
long previousValue = TtlBucket.getTtlIntervalMs();
Whitebox.setInternalState(TtlBucket.class, "sTtlIntervalMs", mIntervalMs);
try {
statement.evaluate();
} finally {
Whitebox.setInternalState(TtlBucket.class, "sTtlIntervalMs", previousValue);
}
}
};
}
}