TransportTypesExistsAction.java

/*
 * Licensed to ElasticSearch and Shay Banon 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.action.admin.indices.exists.types;

import com.google.common.collect.ImmutableMap;
import org.elasticsearch.ElasticSearchException;
import org.elasticsearch.action.support.master.TransportMasterNodeOperationAction;
import org.elasticsearch.cluster.ClusterService;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.cluster.block.ClusterBlockException;
import org.elasticsearch.cluster.block.ClusterBlockLevel;
import org.elasticsearch.cluster.metadata.MappingMetaData;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.TransportService;

/**
 * Types exists transport action.
 */
public class TransportTypesExistsAction extends TransportMasterNodeOperationAction<TypesExistsRequest, TypesExistsResponse> {

    @Inject
    public TransportTypesExistsAction(Settings settings, TransportService transportService, ClusterService clusterService,
                                      ThreadPool threadPool) {
        super(settings, transportService, clusterService, threadPool);
    }

    @Override
    protected String executor() {
        return ThreadPool.Names.MANAGEMENT;
    }

    @Override
    protected String transportAction() {
        return TypesExistsAction.NAME;
    }

    @Override
    protected TypesExistsRequest newRequest() {
        return new TypesExistsRequest();
    }

    @Override
    protected TypesExistsResponse newResponse() {
        return new TypesExistsResponse();
    }

    @Override
    protected ClusterBlockException checkBlock(TypesExistsRequest request, ClusterState state) {
        return state.blocks().indicesBlockedException(ClusterBlockLevel.METADATA, request.indices());
    }

    @Override
    protected TypesExistsResponse masterOperation(TypesExistsRequest request, ClusterState state) throws ElasticSearchException {
        String[] concreteIndices = state.metaData().concreteIndices(request.indices(), request.ignoreIndices(), false);
        if (concreteIndices.length == 0) {
            return new TypesExistsResponse(false);
        }

        for (String concreteIndex : concreteIndices) {
            if (!state.metaData().hasConcreteIndex(concreteIndex)) {
                return new TypesExistsResponse(false);
            }

            ImmutableMap<String, MappingMetaData> mappings = state.metaData().getIndices().get(concreteIndex).mappings();
            if (mappings.isEmpty()) {
                return new TypesExistsResponse(false);
            }

            for (String type : request.types()) {
                if (!mappings.containsKey(type)) {
                    return new TypesExistsResponse(false);
                }
            }
        }

        return new TypesExistsResponse(true);
    }
}