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/*
* 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.cluster.allocation;
import org.elasticsearch.cluster.ClusterModule;
import org.elasticsearch.cluster.routing.allocation.allocator.BalancedShardsAllocator;
import org.elasticsearch.cluster.routing.allocation.allocator.ShardsAllocator;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.test.ESIntegTestCase;
import org.elasticsearch.test.ESIntegTestCase.ClusterScope;
import java.io.IOException;
import static org.elasticsearch.common.settings.Settings.settingsBuilder;
import static org.elasticsearch.test.ESIntegTestCase.*;
import static org.hamcrest.Matchers.instanceOf;
@ClusterScope(scope= Scope.TEST, numDataNodes =0)
public class ShardsAllocatorModuleIT extends ESIntegTestCase {
public void testLoadDefaultShardsAllocator() throws IOException {
assertAllocatorInstance(Settings.Builder.EMPTY_SETTINGS, BalancedShardsAllocator.class);
}
public void testLoadByShortKeyShardsAllocator() throws IOException {
Settings build = settingsBuilder().put(ClusterModule.SHARDS_ALLOCATOR_TYPE_KEY, "even_shard") // legacy just to make sure we don't barf
.build();
assertAllocatorInstance(build, BalancedShardsAllocator.class);
build = settingsBuilder().put(ClusterModule.SHARDS_ALLOCATOR_TYPE_KEY, ClusterModule.BALANCED_ALLOCATOR).build();
assertAllocatorInstance(build, BalancedShardsAllocator.class);
}
private void assertAllocatorInstance(Settings settings, Class<? extends ShardsAllocator> clazz) throws IOException {
while (cluster().size() != 0) {
internalCluster().stopRandomDataNode();
}
internalCluster().startNode(settings);
ShardsAllocator instance = internalCluster().getInstance(ShardsAllocator.class);
assertThat(instance, instanceOf(clazz));
}
}
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