com.aliyun.auth.credentials.utils.OneCallerBlocks Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of aliyun-java-auth Show documentation

The newest version!

package com.aliyun.auth.credentials.utils;

import java.util.concurrent.atomic.AtomicBoolean;

public class OneCallerBlocks implements RefreshCachedSupplier.PrefetchStrategy {
    private final AtomicBoolean currentlyRefreshing = new AtomicBoolean(false);

    @Override
    public void prefetch(Runnable valueUpdater) {
        if (currentlyRefreshing.compareAndSet(false, true)) {
            try {
                valueUpdater.run();
            } finally {
                currentlyRefreshing.set(false);
            }
        }
    }
}