org.elasticsearch.action.support.master.info.TransportClusterInfoAction 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.support.master.info;

import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.ActionResponse;
import org.elasticsearch.action.support.ActionFilters;
import org.elasticsearch.action.support.master.TransportMasterNodeReadAction;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.cluster.block.ClusterBlockException;
import org.elasticsearch.cluster.block.ClusterBlockLevel;
import org.elasticsearch.cluster.metadata.IndexNameExpressionResolver;
import org.elasticsearch.cluster.service.ClusterService;
import org.elasticsearch.common.io.stream.Writeable;
import org.elasticsearch.tasks.Task;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.TransportService;

public abstract class TransportClusterInfoAction, Response extends ActionResponse> extends
    TransportMasterNodeReadAction {

    public TransportClusterInfoAction(
        String actionName,
        TransportService transportService,
        ClusterService clusterService,
        ThreadPool threadPool,
        ActionFilters actionFilters,
        Writeable.Reader request,
        IndexNameExpressionResolver indexNameExpressionResolver,
        Writeable.Reader response
    ) {
        super(
            actionName,
            transportService,
            clusterService,
            threadPool,
            actionFilters,
            request,
            indexNameExpressionResolver,
            response,
            ThreadPool.Names.SAME
        );
    }

    @Override
    protected ClusterBlockException checkBlock(Request request, ClusterState state) {
        return state.blocks()
            .indicesBlockedException(ClusterBlockLevel.METADATA_READ, indexNameExpressionResolver.concreteIndexNames(state, request));
    }

    @Override
    protected final void masterOperation(
        Task task,
        final Request request,
        final ClusterState state,
        final ActionListener listener
    ) {
        String[] concreteIndices = indexNameExpressionResolver.concreteIndexNames(state, request);
        doMasterOperation(task, request, concreteIndices, state, listener);
    }

    protected abstract void doMasterOperation(
        Task task,
        Request request,
        String[] concreteIndices,
        ClusterState state,
        ActionListener listener
    );
}