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* 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
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package org.elasticsearch.action.support.master;
import org.elasticsearch.action.ActionResponse;
import org.elasticsearch.action.support.ActionFilters;
import org.elasticsearch.cluster.metadata.IndexNameExpressionResolver;
import org.elasticsearch.cluster.service.ClusterService;
import org.elasticsearch.common.settings.Setting;
import org.elasticsearch.common.settings.Setting.Property;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.TransportService;
import java.util.function.Supplier;
/**
* A base class for read operations that needs to be performed on the master node.
* Can also be executed on the local node if needed.
*/
public abstract class TransportMasterNodeReadAction<Request extends MasterNodeReadRequest<Request>, Response extends ActionResponse>
extends TransportMasterNodeAction<Request, Response> {
public static final Setting<Boolean> FORCE_LOCAL_SETTING =
Setting.boolSetting("action.master.force_local", false, Property.NodeScope);
private final boolean forceLocal;
protected TransportMasterNodeReadAction(Settings settings, String actionName, TransportService transportService,
ClusterService clusterService, ThreadPool threadPool, ActionFilters actionFilters,
IndexNameExpressionResolver indexNameExpressionResolver, Supplier<Request> request) {
this(settings, actionName, true, transportService, clusterService, threadPool, actionFilters, indexNameExpressionResolver,request);
}
protected TransportMasterNodeReadAction(Settings settings, String actionName, boolean checkSizeLimit, TransportService transportService,
ClusterService clusterService, ThreadPool threadPool, ActionFilters actionFilters,
IndexNameExpressionResolver indexNameExpressionResolver, Supplier<Request> request) {
super(settings, actionName, checkSizeLimit, transportService, clusterService, threadPool, actionFilters,
indexNameExpressionResolver,request);
this.forceLocal = FORCE_LOCAL_SETTING.get(settings);
}
@Override
protected final boolean localExecute(Request request) {
return forceLocal || request.local();
}
}