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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.zookeeper;

import com.yahoo.security.tls.TlsContext;

import javax.net.ssl.SSLContext;
import java.util.function.Supplier;

/**
 * Provider for Vespa {@link SSLContext} instance to Zookeeper.
 *
 * @author bjorncs
 */
public class VespaSslContextProvider implements Supplier {

    private static TlsContext tlsContext;

    @Override
    public SSLContext get() {
        synchronized (VespaSslContextProvider.class) {
            if (tlsContext == null) throw new IllegalStateException("Vespa TLS is not enabled");
            return tlsContext.context();
        }
    }

    static synchronized void set(TlsContext ctx) {
        if (tlsContext != null) tlsContext.close();
        tlsContext = ctx;
    }

}