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grpclb: add GrpclbLoadBalancerFactory2

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Kun Zhang 2017-01-25 17:44:13 -08:00 committed by Kun Zhang
parent 0e6cf9971b
commit 5bfac218f3
1 changed files with 67 additions and 0 deletions
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grpclb/src/main/java/io/grpc/grpclb/GrpclbLoadBalancerFactory2.java Normal file
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/*
* Copyright 2017, Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
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* distribution.
*
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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package io.grpc.grpclb;
import io.grpc.ExperimentalApi;
import io.grpc.LoadBalancer2;
import io.grpc.PickFirstBalancerFactory2;
import io.grpc.util.RoundRobinLoadBalancerFactory2;
/**
* A factory for {@link LoadBalancer2}s that uses the GRPCLB protocol.
*
* <p><strong>TECHNICAL PREVIEW: </strong>The name of this class is temporary. It will be renamed to
* {@code GrpclbLoadBalancerFactory} during <a href="https://github.com/grpc/grpc-java/issues/2656">
* transition to LBv2</a>. You should use it only if you want to experiment the LBv2 code path.
*
* <p><b>Experimental:</b>This only works with the GRPCLB load-balancer service, which is not
* available yet. Right now it's only good for internal testing.
*/
@ExperimentalApi("https://github.com/grpc/grpc-java/issues/1782")
public class GrpclbLoadBalancerFactory2 extends LoadBalancer2.Factory {
private static final GrpclbLoadBalancerFactory2 instance = new GrpclbLoadBalancerFactory2();
private GrpclbLoadBalancerFactory2() {
}
public static GrpclbLoadBalancerFactory2 getInstance() {
return instance;
}
@Override
public LoadBalancer2 newLoadBalancer(LoadBalancer2.Helper helper) {
return new GrpclbLoadBalancer2(
helper, PickFirstBalancerFactory2.getInstance(),
RoundRobinLoadBalancerFactory2.getInstance());
}
}