org.elasticsearch.action.main.TransportMainAction Maven / Gradle / Ivy

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/*
 * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 * or more contributor license agreements. Licensed under the Elastic License
 * 2.0 and the Server Side Public License, v 1; you may not use this file except
 * in compliance with, at your election, the Elastic License 2.0 or the Server
 * Side Public License, v 1.
 */

package org.elasticsearch.action.main;

import org.elasticsearch.Build;
import org.elasticsearch.Version;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.support.ActionFilters;
import org.elasticsearch.action.support.HandledTransportAction;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.cluster.service.ClusterService;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.node.Node;
import org.elasticsearch.tasks.Task;
import org.elasticsearch.transport.TransportService;

public class TransportMainAction extends HandledTransportAction {

    private final String nodeName;
    private final ClusterService clusterService;

    @Inject
    public TransportMainAction(Settings settings, TransportService transportService,
                               ActionFilters actionFilters, ClusterService clusterService) {
        super(MainAction.NAME, transportService, actionFilters, MainRequest::new);
        this.nodeName = Node.NODE_NAME_SETTING.get(settings);
        this.clusterService = clusterService;
    }

    @Override
    protected void doExecute(Task task, MainRequest request, ActionListener listener) {
        ClusterState clusterState = clusterService.state();
        listener.onResponse(
            new MainResponse(nodeName, Version.CURRENT, clusterState.getClusterName(),
                    clusterState.metadata().clusterUUID(), Build.CURRENT));
    }
}