GetWarmerRequestBuilder.java

/*
 * Licensed to Luca Cavanna (the "Author") under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. Elastic Search 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.shell.client.builders.indices;

import org.elasticsearch.action.ActionFuture;
import org.elasticsearch.action.admin.cluster.state.ClusterStateRequest;
import org.elasticsearch.action.admin.cluster.state.ClusterStateResponse;
import org.elasticsearch.client.Client;
import org.elasticsearch.cluster.metadata.IndexMetaData;
import org.elasticsearch.cluster.metadata.MetaData;
import org.elasticsearch.common.regex.Regex;
import org.elasticsearch.common.xcontent.ToXContent;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.search.warmer.IndexWarmersMetaData;
import org.elasticsearch.shell.client.builders.AbstractRequestBuilderJsonOutput;
import org.elasticsearch.shell.json.JsonToString;
import org.elasticsearch.shell.json.StringToJson;

import java.io.IOException;

/**
 * @author Luca Cavanna
 *
 * Request builder for (get) warmer API
 */
@SuppressWarnings("unused")
public class GetWarmerRequestBuilder<JsonInput, JsonOutput> extends AbstractRequestBuilderJsonOutput<ClusterStateRequest, ClusterStateResponse, JsonInput, JsonOutput> {

    private String name;

    public GetWarmerRequestBuilder(Client client, JsonToString<JsonInput> jsonToString, StringToJson<JsonOutput> stringToJson) {
        super(client, new ClusterStateRequest(), jsonToString, stringToJson);
        this.request.filterAll().filterMetaData(false).listenerThreaded(false);
    }

    public GetWarmerRequestBuilder<JsonInput, JsonOutput> indices(String... indices) {
        this.request.filteredIndices(indices);
        return this;
    }

    public GetWarmerRequestBuilder<JsonInput, JsonOutput> name(String name) {
        this.name = name;
        return this;
    }

    @Override
    protected ActionFuture<ClusterStateResponse> doExecute(ClusterStateRequest request) {
        return client.admin().cluster().state(request);
    }

    @Override
    protected XContentBuilder toXContent(ClusterStateRequest request, ClusterStateResponse response, XContentBuilder builder) throws IOException {

        MetaData metaData = response.getState().metaData();

        builder.startObject();

        for (IndexMetaData indexMetaData : metaData) {
            IndexWarmersMetaData warmers = indexMetaData.custom(IndexWarmersMetaData.TYPE);
            if (warmers == null) {
                continue;
            }

            boolean foundOne = false;
            for (IndexWarmersMetaData.Entry entry : warmers.entries()) {
                if (name == null || Regex.simpleMatch(name, entry.name())) {
                    foundOne = true;
                    break;
                }
            }

            if (foundOne) {
                builder.startObject(indexMetaData.index(), XContentBuilder.FieldCaseConversion.NONE);
                builder.startObject(IndexWarmersMetaData.TYPE, XContentBuilder.FieldCaseConversion.NONE);
                for (IndexWarmersMetaData.Entry entry : warmers.entries()) {
                    if (name == null || Regex.simpleMatch(name, entry.name())) {
                        IndexWarmersMetaData.FACTORY.toXContent(entry, builder, ToXContent.EMPTY_PARAMS);
                    }
                }
                builder.endObject();
                builder.endObject();
            }
        }

        builder.endObject();
        return builder;
    }
}