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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.health;
import org.elasticsearch.Version;
import org.elasticsearch.action.support.IndicesOptions;
import org.elasticsearch.cluster.ClusterName;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.cluster.metadata.IndexMetaData;
import org.elasticsearch.cluster.metadata.IndexNameExpressionResolver;
import org.elasticsearch.cluster.metadata.MetaData;
import org.elasticsearch.cluster.routing.IndexRoutingTable;
import org.elasticsearch.cluster.routing.RoutingTable;
import org.elasticsearch.common.io.stream.BytesStreamOutput;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.test.ESTestCase;
import org.hamcrest.Matchers;
import java.io.IOException;
import static org.hamcrest.CoreMatchers.allOf;
import static org.hamcrest.CoreMatchers.equalTo;
import static org.hamcrest.Matchers.*;
public class ClusterStateHealthTests extends ESTestCase {
private final IndexNameExpressionResolver indexNameExpressionResolver = new IndexNameExpressionResolver(Settings.EMPTY);
public void testClusterHealth() throws IOException {
RoutingTableGenerator routingTableGenerator = new RoutingTableGenerator();
RoutingTableGenerator.ShardCounter counter = new RoutingTableGenerator.ShardCounter();
RoutingTable.Builder routingTable = RoutingTable.builder();
MetaData.Builder metaData = MetaData.builder();
for (int i = randomInt(4); i >= 0; i--) {
int numberOfShards = randomInt(3) + 1;
int numberOfReplicas = randomInt(4);
IndexMetaData indexMetaData = IndexMetaData
.builder("test_" + Integer.toString(i))
.settings(settings(Version.CURRENT))
.numberOfShards(numberOfShards)
.numberOfReplicas(numberOfReplicas)
.build();
IndexRoutingTable indexRoutingTable = routingTableGenerator.genIndexRoutingTable(indexMetaData, counter);
metaData.put(indexMetaData, true);
routingTable.add(indexRoutingTable);
}
ClusterState clusterState = ClusterState.builder(ClusterName.DEFAULT).metaData(metaData).routingTable(routingTable.build()).build();
String[] concreteIndices = indexNameExpressionResolver.concreteIndices(clusterState, IndicesOptions.strictExpand(), (String[]) null);
ClusterStateHealth clusterStateHealth = new ClusterStateHealth(clusterState, concreteIndices);
logger.info("cluster status: {}, expected {}", clusterStateHealth.getStatus(), counter.status());
clusterStateHealth = maybeSerialize(clusterStateHealth);
assertClusterHealth(clusterStateHealth, counter);
}
public void testValidations() throws IOException {
RoutingTableGenerator routingTableGenerator = new RoutingTableGenerator();
IndexMetaData indexMetaData = IndexMetaData
.builder("test")
.settings(settings(Version.CURRENT))
.numberOfShards(2)
.numberOfReplicas(2)
.build();
RoutingTableGenerator.ShardCounter counter = new RoutingTableGenerator.ShardCounter();
IndexRoutingTable indexRoutingTable = routingTableGenerator.genIndexRoutingTable(indexMetaData, counter);
indexMetaData = IndexMetaData.builder("test").settings(settings(Version.CURRENT)).numberOfShards(2).numberOfReplicas(3).build();
ClusterIndexHealth indexHealth = new ClusterIndexHealth(indexMetaData, indexRoutingTable);
assertThat(indexHealth.getValidationFailures(), Matchers.hasSize(2));
RoutingTable.Builder routingTable = RoutingTable.builder();
MetaData.Builder metaData = MetaData.builder();
metaData.put(indexMetaData, true);
routingTable.add(indexRoutingTable);
ClusterState clusterState = ClusterState.builder(ClusterName.DEFAULT).metaData(metaData).routingTable(routingTable.build()).build();
String[] concreteIndices = indexNameExpressionResolver.concreteIndices(clusterState, IndicesOptions.strictExpand(), (String[]) null);
ClusterStateHealth clusterStateHealth = new ClusterStateHealth(clusterState, concreteIndices);
clusterStateHealth = maybeSerialize(clusterStateHealth);
// currently we have no cluster level validation failures as index validation issues are reported per index.
assertThat(clusterStateHealth.getValidationFailures(), Matchers.hasSize(0));
}
ClusterStateHealth maybeSerialize(ClusterStateHealth clusterStateHealth) throws IOException {
if (randomBoolean()) {
BytesStreamOutput out = new BytesStreamOutput();
clusterStateHealth.writeTo(out);
StreamInput in = StreamInput.wrap(out.bytes());
clusterStateHealth = ClusterStateHealth.readClusterHealth(in);
}
return clusterStateHealth;
}
private void assertClusterHealth(ClusterStateHealth clusterStateHealth, RoutingTableGenerator.ShardCounter counter) {
assertThat(clusterStateHealth.getStatus(), equalTo(counter.status()));
assertThat(clusterStateHealth.getActiveShards(), equalTo(counter.active));
assertThat(clusterStateHealth.getActivePrimaryShards(), equalTo(counter.primaryActive));
assertThat(clusterStateHealth.getInitializingShards(), equalTo(counter.initializing));
assertThat(clusterStateHealth.getRelocatingShards(), equalTo(counter.relocating));
assertThat(clusterStateHealth.getUnassignedShards(), equalTo(counter.unassigned));
assertThat(clusterStateHealth.getValidationFailures(), empty());
assertThat(clusterStateHealth.getActiveShardsPercent(), is(allOf(greaterThanOrEqualTo(0.0), lessThanOrEqualTo(100.0))));
}
}
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