TestIndex_02_Create.java

package es_02_index;

import org.elasticsearch.action.admin.indices.alias.Alias;
import org.elasticsearch.action.support.ActiveShardCount;
import org.elasticsearch.client.IndicesClient;
import org.elasticsearch.client.RequestOptions;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.client.indices.CreateIndexRequest;
import org.elasticsearch.client.indices.CreateIndexResponse;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.unit.TimeValue;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

/**
 * 创建索引
 *
 * @author : qinyingjie
 * @version : 2.2.0
 * @date : 2023/5/13 11:06
 */
@SpringBootTest
@RunWith(SpringRunner.class)
public class TestIndex_02_Create {
    @Autowired
    private RestHighLevelClient client;

    //创建索引
    @Test
    public void testCreateIndex() throws IOException {
//        PUT /my_index
//        {
//            "settings": {
//            "number_of_shards": 1,
//                    "number_of_replicas": 1
//        },
//            "mappings": {
//            "properties": {
//                "field1":{
//                    "type": "text"
//                },
//                "field2":{
//                    "type": "text"
//                }
//            }
//        },
//            "aliases": {
//            "default_index": {}
//        }
//        }
        //创建索引对象
        CreateIndexRequest createIndexRequest = new CreateIndexRequest("itheima_book");
        //设置参数
        createIndexRequest.settings(Settings.builder().put("number_of_shards", "1").put("number_of_replicas", "0"));
        //指定映射
        Map<String, Object> message = new HashMap<>();
        message.put("type", "text");
        Map<String, Object> properties = new HashMap<>();
        properties.put("message", message);
        Map<String, Object> mapping = new HashMap<>();
        mapping.put("properties", properties);
        createIndexRequest.mapping(mapping);
        //设置别名
        createIndexRequest.alias(new Alias("itheima_index_new"));
        // 额外参数
        //设置超时时间
        createIndexRequest.setTimeout(TimeValue.timeValueMinutes(2));
        //设置主节点超时时间
        createIndexRequest.setMasterTimeout(TimeValue.timeValueMinutes(1));
        //在创建索引API返回响应之前等待的活动分片副本的数量，以int形式表示
        createIndexRequest.waitForActiveShards(ActiveShardCount.from(2));
        createIndexRequest.waitForActiveShards(ActiveShardCount.DEFAULT);
        //操作索引的客户端
        IndicesClient indices = client.indices();
        //执行创建索引库
        CreateIndexResponse createIndexResponse = indices.create(createIndexRequest, RequestOptions.DEFAULT);
        //得到响应（全部）
        boolean acknowledged = createIndexResponse.isAcknowledged();
        //得到响应 指示是否在超时前为索引中的每个分片启动了所需数量的碎片副本
        boolean shardsAcknowledged = createIndexResponse.isShardsAcknowledged();
        System.out.println("acknowledged:" + acknowledged);
        System.out.println("shardsAcknowledged:" + shardsAcknowledged);
    }
}