TransportClient.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;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.elasticsearch.cluster.node.DiscoveryNode;
import org.elasticsearch.common.collect.ImmutableList;
import org.elasticsearch.common.transport.TransportAddress;
import org.elasticsearch.shell.dump.DumpRestorer;
import org.elasticsearch.shell.dump.DumpSaver;
import org.elasticsearch.shell.json.JsonToString;
import org.elasticsearch.shell.json.StringToJson;

/**
 * @author Luca Cavanna
 *
 * Represents an elasticsearch transport client within the shell
 * @param <JsonInput> the shell native object that represents a json object received as input from the shell
 * @param <JsonOutput> the shell native object that represents a json object that we give as output to the shell
 */
public class TransportClient<JsonInput, JsonOutput>
        extends AbstractClient<org.elasticsearch.client.transport.TransportClient, JsonInput, JsonOutput> {

    protected TransportClient(org.elasticsearch.client.transport.TransportClient client, JsonToString<JsonInput> jsonToString,
                              StringToJson<JsonOutput> stringToJson, DumpSaver<JsonInput> dumpSaver, DumpRestorer dumpRestorer) {
        super(client, jsonToString, stringToJson, dumpSaver, dumpRestorer);
    }

    @Override
    public void close() throws IOException {
        client().close();
    }

    public List<String> connectedNodes() {
        ImmutableList<DiscoveryNode> discoveryNodes = client().connectedNodes();
        List<String> nodes = new ArrayList<String>();
        for (DiscoveryNode discoveryNode : discoveryNodes) {
            TransportAddress address = discoveryNode.address();
            if (address != null) {
                nodes.add(address.toString());
            }
        }
        return nodes;
    }

    @Override
    protected String asString() {
        return "Transport client connected to " + connectedNodes();
    }
}