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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.config;
import com.yahoo.jrt.Request;
import com.yahoo.jrt.RequestWaiter;
import com.yahoo.jrt.Spec;
import com.yahoo.jrt.Supervisor;
import com.yahoo.jrt.Target;
import java.time.Duration;
import java.util.Objects;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* A JRT connection to a config server or config proxy.
*
* @author Gunnar Gauslaa Bergem
* @author hmusum
*/
public class JRTConnection implements Connection {
private final static Logger logger = Logger.getLogger(JRTConnection.class.getName());
private final String address;
private final Supervisor supervisor;
private Target target;
public JRTConnection(String address, Supervisor supervisor) {
this.address = address;
this.supervisor = supervisor;
}
@Override
public void invokeAsync(Request request, Duration jrtTimeout, RequestWaiter requestWaiter) {
getTarget().invokeAsync(request, jrtTimeout, requestWaiter);
}
@Override
public void invokeSync(Request request, Duration jrtTimeout) {
getTarget().invokeSync(request, jrtTimeout);
}
public String getAddress() {
return address;
}
/**
* This is synchronized to avoid multiple ConfigInstances creating new targets simultaneously, if
* the existing target is null, invalid or has not yet been initialized.
*
* @return The existing target, or a new one if invalid or null.
*/
public synchronized Target getTarget() {
if (target == null || !target.isValid()) {
if (target != null) // Don't log the first time
logger.log(Level.INFO, "Connecting to " + address);
target = supervisor.connect(new Spec(address));
}
return target;
}
@Override
public String toString() {
return address;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
JRTConnection that = (JRTConnection) o;
return address.equals(that.address);
}
@Override
public int hashCode() {
return Objects.hash(address);
}
}
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