/*
* Licensed to Crate under one or more contributor license agreements.
* See the NOTICE file distributed with this work for additional
* information regarding copyright ownership. Crate 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.
*
* However, if you have executed another commercial license agreement
* with Crate these terms will supersede the license and you may use the
* software solely pursuant to the terms of the relevant commercial
* agreement.
*/
package io.crate.operation.reference.sys.check.node;
import org.elasticsearch.cluster.service.ClusterService;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.inject.Singleton;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.gateway.GatewayService;
@Singleton
public class RecoveryExpectedNodesSysCheck extends AbstractSysNodeCheck {
private final Settings settings;
static final int ID = 1;
private static final String DESCRIPTION = "The value of the cluster setting 'gateway.expected_nodes' " +
"must be equal to the maximum/expected number of master and data nodes in the cluster.";
@Inject
public RecoveryExpectedNodesSysCheck(ClusterService clusterService, Settings settings) {
super(ID, DESCRIPTION, Severity.HIGH, clusterService);
this.settings = settings;
}
@Override
public boolean validate() {
return validate(clusterService.state().nodes().getMasterAndDataNodes().size(),
GatewayService.EXPECTED_NODES_SETTING.get(settings)
);
}
protected boolean validate(int dataAndMaster, int expectedNodes) {
return dataAndMaster == 1 || dataAndMaster == expectedNodes;
}
}