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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.container.jdisc.messagebus;
import com.yahoo.component.AbstractComponent;
import com.yahoo.messagebus.network.Network;
import com.yahoo.messagebus.network.NetworkMultiplexer;
import com.yahoo.messagebus.network.rpc.RPCNetwork;
import com.yahoo.messagebus.network.rpc.RPCNetworkParams;
import com.yahoo.messagebus.shared.NullNetwork;
import com.yahoo.yolean.concurrent.Memoized;
import java.util.concurrent.atomic.AtomicReference;
/**
* Holds a reference to a singleton {@link NetworkMultiplexer}.
*
* @author jonmv
*/
public class NetworkMultiplexerHolder extends AbstractComponent {
private final AtomicReference<RPCNetworkParams> params = new AtomicReference<>();
private final Memoized<NetworkMultiplexer, RuntimeException> net = new Memoized<>(() -> NetworkMultiplexer.shared(newNetwork(params.get())),
NetworkMultiplexer::disown);
/** Get the singleton RPCNetworkAdapter, creating it if this hasn't yet been done. */
public NetworkMultiplexer get(RPCNetworkParams params) {
this.params.set(params);
return net.get();
}
private static Network newNetwork(RPCNetworkParams params) {
return params.getSlobroksConfig() != null && params.getSlobroksConfig().slobrok().isEmpty()
? new NullNetwork() // For LocalApplication, test setup.
: new RPCNetwork(params);
}
@Override
public void deconstruct() {
net.close();
}
}
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