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This OSGi bundle wraps ${pkgArtifactId} ${pkgVersion} jar file.
/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you 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 org.elasticsearch.index.store;
import org.elasticsearch.common.inject.AbstractModule;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.util.Callback;
import org.elasticsearch.env.ShardLock;
import org.elasticsearch.index.shard.ShardId;
import org.elasticsearch.index.store.distributor.Distributor;
import org.elasticsearch.index.store.distributor.LeastUsedDistributor;
import org.elasticsearch.index.store.distributor.RandomWeightedDistributor;
/**
*
*/
public class StoreModule extends AbstractModule {
public static final String DISTIBUTOR_KEY = "index.store.distributor";
public static final String LEAST_USED_DISTRIBUTOR = "least_used";
public static final String RANDOM_WEIGHT_DISTRIBUTOR = "random";
private final Settings settings;
private final IndexStore indexStore;
private final ShardLock lock;
private final Store.OnClose closeCallback;
private Class distributor;
public StoreModule(Settings settings, IndexStore indexStore, ShardLock lock, Store.OnClose closeCallback) {
this.indexStore = indexStore;
this.settings = settings;
this.lock = lock;
this.closeCallback = closeCallback;
}
public void setDistributor(Class distributor) {
this.distributor = distributor;
}
@Override
protected void configure() {
bind(DirectoryService.class).to(indexStore.shardDirectory()).asEagerSingleton();
bind(Store.class).asEagerSingleton();
bind(ShardLock.class).toInstance(lock);
bind(Store.OnClose.class).toInstance(closeCallback);
if (distributor == null) {
distributor = loadDistributor(settings);
}
bind(Distributor.class).to(distributor).asEagerSingleton();
}
private Class loadDistributor(Settings settings) {
final Class distributor;
final String type = settings.get(DISTIBUTOR_KEY);
if ("least_used".equals(type)) {
distributor = LeastUsedDistributor.class;
} else if ("random".equals(type)) {
distributor = RandomWeightedDistributor.class;
} else {
distributor = settings.getAsClass(DISTIBUTOR_KEY, LeastUsedDistributor.class,
"org.elasticsearch.index.store.distributor.", "Distributor");
}
return distributor;
}
}