/*
Copyright (c) 2013 LinkedIn Corp.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package com.linkedin.d2.balancer;
import java.util.HashMap;
import java.util.Map;
import com.linkedin.d2.balancer.strategies.LoadBalancerStrategy;
import com.linkedin.d2.balancer.strategies.LoadBalancerStrategyFactory;
import com.linkedin.d2.balancer.strategies.degrader.DegraderLoadBalancerStrategyFactoryV2;
import com.linkedin.d2.balancer.strategies.degrader.DegraderLoadBalancerStrategyFactoryV2_1;
import com.linkedin.d2.balancer.strategies.degrader.DegraderLoadBalancerStrategyFactoryV3;
import com.linkedin.d2.balancer.strategies.random.RandomLoadBalancerStrategyFactory;
import com.linkedin.d2.balancer.zkfs.ZKFSComponentFactory;
import com.linkedin.d2.balancer.zkfs.ZKFSLoadBalancer;
import com.linkedin.d2.balancer.zkfs.ZKFSTogglingLoadBalancerFactoryImpl;
/**
* Implementation of {@link LoadBalancerWithFacilitiesFactory} interface, which creates
* instance of {@link ZKFSLoadBalancer}.
*/
public class ZKFSLoadBalancerWithFacilitiesFactory implements LoadBalancerWithFacilitiesFactory
{
@Override
public LoadBalancerWithFacilities create(D2ClientConfig config)
{
return new ZKFSLoadBalancer(config.zkHosts,
(int) config.zkSessionTimeoutInMs,
(int) config.zkStartupTimeoutInMs,
createLoadBalancerFactory(config),
config.flagFile,
config.basePath,
config.shutdownAsynchronously,
config.isSymlinkAware);
}
private ZKFSLoadBalancer.TogglingLoadBalancerFactory createLoadBalancerFactory(D2ClientConfig config)
{
final ZKFSTogglingLoadBalancerFactoryImpl.ComponentFactory loadBalancerComponentFactory;
if (config.componentFactory == null)
{
loadBalancerComponentFactory = new ZKFSComponentFactory();
}
else
{
loadBalancerComponentFactory = config.componentFactory;
}
final Map<String, LoadBalancerStrategyFactory<? extends LoadBalancerStrategy>> loadBalancerStrategyFactories =
createDefaultLoadBalancerStrategyFactories();
return new ZKFSTogglingLoadBalancerFactoryImpl(loadBalancerComponentFactory,
config.lbWaitTimeout,
config.lbWaitUnit,
config.basePath,
config.fsBasePath,
config.clientFactories,
loadBalancerStrategyFactories,
config.d2ServicePath,
config.sslContext,
config.sslParameters,
config.isSSLEnabled,
config.clientServicesConfig);
}
private Map<String, LoadBalancerStrategyFactory<? extends LoadBalancerStrategy>> createDefaultLoadBalancerStrategyFactories()
{
final Map<String, LoadBalancerStrategyFactory<? extends LoadBalancerStrategy>> loadBalancerStrategyFactories =
new HashMap<String, LoadBalancerStrategyFactory<? extends LoadBalancerStrategy>>();
final RandomLoadBalancerStrategyFactory randomStrategyFactory = new RandomLoadBalancerStrategyFactory();
final DegraderLoadBalancerStrategyFactoryV2 degraderStrategyFactoryV2 = new DegraderLoadBalancerStrategyFactoryV2();
final DegraderLoadBalancerStrategyFactoryV3 degraderStrategyFactoryV3 = new DegraderLoadBalancerStrategyFactoryV3();
final DegraderLoadBalancerStrategyFactoryV2_1 degraderStrategyFactoryV2_1 = new DegraderLoadBalancerStrategyFactoryV2_1();
loadBalancerStrategyFactories.put("random", randomStrategyFactory);
loadBalancerStrategyFactories.put("degrader", degraderStrategyFactoryV2);
loadBalancerStrategyFactories.put("degraderV2", degraderStrategyFactoryV2);
loadBalancerStrategyFactories.put("degraderV3", degraderStrategyFactoryV3);
loadBalancerStrategyFactories.put("degraderV2_1", degraderStrategyFactoryV2_1);
return loadBalancerStrategyFactories;
}
}