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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;
import org.elasticsearch.action.admin.indices.create.CreateIndexClusterStateUpdateRequest;
import org.elasticsearch.cluster.metadata.IndexTemplateFilter;
import org.elasticsearch.cluster.metadata.IndexTemplateMetaData;
import org.elasticsearch.cluster.node.DiscoveryNode;
import org.elasticsearch.cluster.routing.ShardRouting;
import org.elasticsearch.cluster.routing.allocation.RoutingAllocation;
import org.elasticsearch.cluster.routing.allocation.allocator.BalancedShardsAllocator;
import org.elasticsearch.cluster.routing.allocation.allocator.ShardsAllocator;
import org.elasticsearch.cluster.routing.allocation.decider.AllocationDecider;
import org.elasticsearch.cluster.routing.allocation.decider.AllocationDeciders;
import org.elasticsearch.cluster.routing.allocation.decider.EnableAllocationDecider;
import org.elasticsearch.cluster.service.ClusterService;
import org.elasticsearch.common.inject.ModuleTestCase;
import org.elasticsearch.common.settings.ClusterSettings;
import org.elasticsearch.common.settings.IndexScopedSettings;
import org.elasticsearch.common.settings.Setting;
import org.elasticsearch.common.settings.Setting.Property;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.settings.SettingsModule;
import org.elasticsearch.plugins.ClusterPlugin;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
public class ClusterModuleTests extends ModuleTestCase {
private ClusterService clusterService = new ClusterService(Settings.EMPTY,
new ClusterSettings(Settings.EMPTY, ClusterSettings.BUILT_IN_CLUSTER_SETTINGS), null);
static class FakeAllocationDecider extends AllocationDecider {
protected FakeAllocationDecider(Settings settings) {
super(settings);
}
}
static class FakeShardsAllocator implements ShardsAllocator {
@Override
public void allocate(RoutingAllocation allocation) {
// noop
}
@Override
public Map<DiscoveryNode, Float> weighShard(RoutingAllocation allocation, ShardRouting shard) {
return new HashMap<>();
}
}
static class FakeIndexTemplateFilter implements IndexTemplateFilter {
@Override
public boolean apply(CreateIndexClusterStateUpdateRequest request, IndexTemplateMetaData template) {
return false;
}
}
public void testRegisterClusterDynamicSettingDuplicate() {
try {
new SettingsModule(Settings.EMPTY, EnableAllocationDecider.CLUSTER_ROUTING_ALLOCATION_ENABLE_SETTING);
} catch (IllegalArgumentException e) {
assertEquals(e.getMessage(),
"Cannot register setting [" + EnableAllocationDecider.CLUSTER_ROUTING_ALLOCATION_ENABLE_SETTING.getKey() + "] twice");
}
}
public void testRegisterClusterDynamicSetting() {
SettingsModule module = new SettingsModule(Settings.EMPTY,
Setting.boolSetting("foo.bar", false, Property.Dynamic, Property.NodeScope));
assertInstanceBinding(module, ClusterSettings.class, service -> service.hasDynamicSetting("foo.bar"));
}
public void testRegisterIndexDynamicSettingDuplicate() {
try {
new SettingsModule(Settings.EMPTY, EnableAllocationDecider.INDEX_ROUTING_ALLOCATION_ENABLE_SETTING);
} catch (IllegalArgumentException e) {
assertEquals(e.getMessage(),
"Cannot register setting [" + EnableAllocationDecider.INDEX_ROUTING_ALLOCATION_ENABLE_SETTING.getKey() + "] twice");
}
}
public void testRegisterIndexDynamicSetting() {
SettingsModule module = new SettingsModule(Settings.EMPTY,
Setting.boolSetting("index.foo.bar", false, Property.Dynamic, Property.IndexScope));
assertInstanceBinding(module, IndexScopedSettings.class, service -> service.hasDynamicSetting("index.foo.bar"));
}
public void testRegisterAllocationDeciderDuplicate() {
IllegalArgumentException e = expectThrows(IllegalArgumentException.class, () ->
new ClusterModule(Settings.EMPTY, clusterService,
Collections.singletonList(new ClusterPlugin() {
@Override
public Collection<AllocationDecider> createAllocationDeciders(Settings settings, ClusterSettings clusterSettings) {
return Collections.singletonList(new EnableAllocationDecider(settings, clusterSettings));
}
})));
assertEquals(e.getMessage(),
"Cannot specify allocation decider [" + EnableAllocationDecider.class.getName() + "] twice");
}
public void testRegisterAllocationDecider() {
ClusterModule module = new ClusterModule(Settings.EMPTY, clusterService,
Collections.singletonList(new ClusterPlugin() {
@Override
public Collection<AllocationDecider> createAllocationDeciders(Settings settings, ClusterSettings clusterSettings) {
return Collections.singletonList(new FakeAllocationDecider(settings));
}
}));
assertTrue(module.allocationDeciders.stream().anyMatch(d -> d.getClass().equals(FakeAllocationDecider.class)));
}
public void testRegisterShardsAllocator() {
Settings settings = Settings.builder().put(ClusterModule.SHARDS_ALLOCATOR_TYPE_SETTING.getKey(), "custom").build();
ClusterModule module = new ClusterModule(settings, clusterService, Collections.emptyList());
module.registerShardsAllocator("custom", FakeShardsAllocator.class);
assertBinding(module, ShardsAllocator.class, FakeShardsAllocator.class);
}
public void testRegisterShardsAllocatorAlreadyRegistered() {
ClusterModule module = new ClusterModule(Settings.EMPTY, clusterService, Collections.emptyList());
try {
module.registerShardsAllocator(ClusterModule.BALANCED_ALLOCATOR, FakeShardsAllocator.class);
} catch (IllegalArgumentException e) {
assertEquals(e.getMessage(), "Can't register the same [shards_allocator] more than once for [balanced]");
}
}
public void testUnknownShardsAllocator() {
Settings settings = Settings.builder().put(ClusterModule.SHARDS_ALLOCATOR_TYPE_SETTING.getKey(), "dne").build();
ClusterModule module = new ClusterModule(settings, clusterService, Collections.emptyList());
assertBindingFailure(module, "Unknown [shards_allocator]");
}
public void testEvenShardsAllocatorBackcompat() {
Settings settings = Settings.builder()
.put(ClusterModule.SHARDS_ALLOCATOR_TYPE_SETTING.getKey(), ClusterModule.EVEN_SHARD_COUNT_ALLOCATOR).build();
ClusterModule module = new ClusterModule(settings, clusterService, Collections.emptyList());
assertBinding(module, ShardsAllocator.class, BalancedShardsAllocator.class);
}
public void testRegisterIndexTemplateFilterDuplicate() {
ClusterModule module = new ClusterModule(Settings.EMPTY, clusterService, Collections.emptyList());
try {
module.registerIndexTemplateFilter(FakeIndexTemplateFilter.class);
module.registerIndexTemplateFilter(FakeIndexTemplateFilter.class);
} catch (IllegalArgumentException e) {
assertEquals(e.getMessage(),
"Can't register the same [index_template_filter] more than once for [" + FakeIndexTemplateFilter.class.getName() + "]");
}
}
public void testRegisterIndexTemplateFilter() {
ClusterModule module = new ClusterModule(Settings.EMPTY, clusterService, Collections.emptyList());
module.registerIndexTemplateFilter(FakeIndexTemplateFilter.class);
assertSetMultiBinding(module, IndexTemplateFilter.class, FakeIndexTemplateFilter.class);
}
}
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