ES Rest-high-API简单操作(代码存档)

作者: K__3f8b | 来源:发表于2021-01-12 16:51 被阅读0次

ES
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XP自动扫雷
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spring data elasticsearch基本操作
JavaScript 和ECMAScript有什么区别？
小程序里使用es7的async await语法
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JavaScript宏观任务和微观任务
React-Native(Navigator)

依赖

<dependency>
    <groupId>org.elasticsearch.client</groupId>
    <artifactId>elasticsearch-rest-high-level-client</artifactId>
    <version>6.8.4</version>
</dependency>

配置文件 config.properties

# Elasticsearch配置
Elasticsearch.host=192.168.1.101
Elasticsearch.port=9200
Elasticsearch.scheme=http

工具类 ESUtil

package com.wuzhou.utils;

import com.alibaba.fastjson.JSON;
import org.apache.http.HttpHost;
import org.elasticsearch.action.admin.indices.delete.DeleteIndexRequest;
import org.elasticsearch.action.bulk.BulkRequest;
import org.elasticsearch.action.bulk.BulkResponse;
import org.elasticsearch.action.delete.DeleteRequest;
import org.elasticsearch.action.delete.DeleteResponse;
import org.elasticsearch.action.index.IndexRequest;
import org.elasticsearch.action.index.IndexResponse;
import org.elasticsearch.action.support.master.AcknowledgedResponse;
import org.elasticsearch.action.update.UpdateRequest;
import org.elasticsearch.action.update.UpdateResponse;
import org.elasticsearch.client.*;
import org.elasticsearch.client.indices.CreateIndexRequest;
import org.elasticsearch.client.indices.CreateIndexResponse;
import org.elasticsearch.common.xcontent.XContentType;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.index.reindex.BulkByScrollResponse;
import org.elasticsearch.index.reindex.DeleteByQueryRequest;

import java.io.IOException;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.Properties;

/**
 * 使用Java High Level REST Client(待补全)
 * <p>
 * https://www.elastic.co/guide/en/elasticsearch/client/java-rest/6.8/java-rest-high-put-mapping.html
 *
 * @author Y_Kevin
 * @date 2021-01-05 16:06
 */
public class ESUtil {

  /**
   * 获取Elasticsearch配置信息
   */
  private final Properties properties = PropertiesUtil.load("config.properties");
  private final String ES_HOST = properties.getProperty("Elasticsearch.host");
  private final int ES_HTTP_PORT = Integer.parseInt(properties.getProperty("Elasticsearch.port"));
  private final String ES_SCHEME = properties.getProperty("Elasticsearch.scheme");
  private final RestHighLevelClient restClient = null;

  /**
   * 自定义 RequestOptions 或者直接使用默认的 RequestOptions.DEFAULT
   * See <a href="https://www.elastic.co/guide/en/elasticsearch/client/java-rest/6.8/java-rest-low-usage-requests.html#java-rest-low-usage-request-options"></a>
   */
  private static final RequestOptions COMMON_OPTIONS;

  static {
    RequestOptions.Builder builder = RequestOptions.DEFAULT.toBuilder();
    //builder.addHeader("Authorization", "Bearer " + TOKEN);
    //builder.setHttpAsyncResponseConsumerFactory(
    //      new HttpAsyncResponseConsumerFactory
    //              .HeapBufferedResponseConsumerFactory(30 * 1024 * 1024 * 1024));
    COMMON_OPTIONS = builder.build();
  }

  /**
   * 获取客户端
   * See <a href="https://www.elastic.co/guide/en/elasticsearch/client/java-rest/6.8/java-rest-high-getting-started-initialization.html">Initialization</a>
   *
   * @return RestHighLevelClient
   */
  public RestHighLevelClient getRestClient() {
    if (restClient == null) {
      HttpHost httpHost = new HttpHost(ES_HOST, ES_HTTP_PORT, ES_SCHEME);
      RestClientBuilder builder = RestClient.builder(httpHost);
      return new RestHighLevelClient(builder);
    } else {
      return restClient;
    }
  }

  /**
   * 关闭客户端
   *
   * @param restClient 客户端
   */
  public void closeClient(RestHighLevelClient restClient) {
    if (!Objects.isNull(restClient)) {
      try {
        restClient.close();
      } catch (IOException e) {
        e.printStackTrace();
      }
    }
  }

  /**
   * 创建索引
   * See <a href="https://www.elastic.co/guide/en/elasticsearch/client/java-rest/6.8/java-rest-high-create-index.html">Create Index API</a>
   *
   * @param indexName 索引名称
   * @param mapping   映射规则
   * @throws IOException
   */
  public void createMappings(String indexName, Map<String, Object> mapping) throws IOException {
    // 获取客户端
    RestHighLevelClient restClient = getRestClient();
    CreateIndexRequest createRequest = new CreateIndexRequest(indexName);
    createRequest.mapping(mapping);
    //提交
    CreateIndexResponse createIndexResponse = restClient.indices().create(createRequest, COMMON_OPTIONS);
    System.out.println("创建完成！==》" + createIndexResponse.isAcknowledged());
    // 关闭客户端
    closeClient(restClient);
  }

  /**
   * 删除索引
   * See <a href="https://www.elastic.co/guide/en/elasticsearch/client/java-rest/6.8/java-rest-high-delete-index.html">Delete Index API</a>
   *
   * @param indexName 索引名称
   * @throws IOException
   */
  public void deleteIndex(String indexName) throws IOException {
    // 获取客户端
    RestHighLevelClient restClient = getRestClient();
    DeleteIndexRequest deleteIndexRequest = new DeleteIndexRequest(indexName);
    // 提交
    AcknowledgedResponse deleteIndexResponse = restClient.indices().delete(deleteIndexRequest, COMMON_OPTIONS);
    System.out.println("删除完成！==》" + deleteIndexResponse.isAcknowledged());
    // 关闭客户端
    closeClient(restClient);
  }

  /**
   * 插入一条
   * See <a href="https://www.elastic.co/guide/en/elasticsearch/client/java-rest/6.8/java-rest-high-document-index.html">Index API</a>
   *
   * @param indexName 索引名称
   * @param source    数据
   * @throws IOException
   */
  public void addOneDoc(String indexName, Object source) throws IOException {
    // 获取客户端
    RestHighLevelClient restClient = getRestClient();
    IndexRequest indexRequest = new IndexRequest(indexName);
    // 如果只使用 JSON.toJSONString ，如果source存在List，List只有第一个被解析
    String jsonString = JSON.toJSONString(JSON.toJSON(source));
    indexRequest.source(jsonString, XContentType.JSON).type("_doc");
    // 提交
    IndexResponse indexResponse = restClient.index(indexRequest, COMMON_OPTIONS);
    System.out.println("单条插入完成！==》" + indexResponse.getResult());
    // 关闭客户端
    closeClient(restClient);
  }

  /**
   * 批量插入
   * See <a href="https://www.elastic.co/guide/en/elasticsearch/client/java-rest/6.8/java-rest-high-document-bulk.html">Bulk API</a>
   *
   * @param indexName 索引名称
   * @param list      数据
   * @throws IOException
   */
  public void addBatchDoc(String indexName, List<Object> list) throws IOException {
    // 获取客户端
    RestHighLevelClient restClient = getRestClient();

    BulkRequest bulkRequest = new BulkRequest();
    for (Object source : list) {
      // 如果只使用 JSON.toJSONString ，如果source存在List，List只有第一个被解析
      String jsonString = JSON.toJSONString(JSON.toJSON(source));
      bulkRequest.add(new IndexRequest(indexName).source(jsonString, XContentType.JSON).type("_doc"));
    }
    // 提交
    BulkResponse bulkResponse = restClient.bulk(bulkRequest, COMMON_OPTIONS);
    System.out.println("多条插入完成！==》" + bulkResponse.status());
    // 关闭客户端
    closeClient(restClient);
  }

  /**
   * 单条Doc删除
   * See <a href="https://www.elastic.co/guide/en/elasticsearch/client/java-rest/6.8/java-rest-high-document-delete.html">Delete API</a>
   *
   * @param indexName 索引名称
   * @param id        DocID
   * @throws IOException
   */
  public void deleteDoc(String indexName, String id) throws IOException {
    // 获取客户端
    RestHighLevelClient restClient = getRestClient();
    DeleteRequest deleteRequest = new DeleteRequest(indexName, "_doc", id);
    // 提交
    DeleteResponse deleteResponse = restClient.delete(deleteRequest, COMMON_OPTIONS);
    System.out.println("单条Doc删除完成！==》" + deleteResponse.status());
    // 关闭客户端
    closeClient(restClient);
  }

  /**
   * 按条件删除
   * See <a href="https://www.elastic.co/guide/en/elasticsearch/client/java-rest/6.8/java-rest-high-document-delete-by-query.html">Delete By Query API</a>
   *
   * @param indexName 索引名称
   * @throws IOException
   */
  public void deleteDocByQuery(String fieldName, String value, String... indexName) throws IOException {
    // 获取客户端
    RestHighLevelClient restClient = getRestClient();
    DeleteByQueryRequest deleteByQueryRequest = new DeleteByQueryRequest(indexName);
    deleteByQueryRequest.setQuery(QueryBuilders.termQuery(fieldName, value));
    // 提交
    BulkByScrollResponse bulkResponse = restClient.deleteByQuery(deleteByQueryRequest, COMMON_OPTIONS);
    System.out.println("条件查询Doc删除完成！==》" + bulkResponse.getStatus());
    // 关闭客户端
    closeClient(restClient);
  }

  /**
   * 按删除全部 (在条件删除上修改条件参数)
   * See <a href="https://www.elastic.co/guide/en/elasticsearch/client/java-rest/6.8/java-rest-high-document-delete-by-query.html">Delete By Query API</a>
   *
   * @param indexName 索引名称
   * @throws IOException
   */
  public void deleteAllDoc(String... indexName) throws IOException {
    // 获取客户端
    RestHighLevelClient restClient = getRestClient();
    DeleteByQueryRequest deleteByQueryRequest = new DeleteByQueryRequest(indexName);
    // 删除所有
    deleteByQueryRequest.setQuery(QueryBuilders.matchAllQuery());
    // 提交
    BulkByScrollResponse bulkResponse = restClient.deleteByQuery(deleteByQueryRequest, COMMON_OPTIONS);
    System.out.println("Doc全部删除完成！==》" + bulkResponse.getTotal());
    // 关闭客户端
    closeClient(restClient);
  }

  /**
   * 修改
   * See <a href="https://www.elastic.co/guide/en/elasticsearch/client/java-rest/6.8/java-rest-high-document-update.html">Update API</a>
   */
  public void updateDoc(String fieldName, String id) throws IOException {
    // 获取客户端
    RestHighLevelClient restClient = getRestClient();
    UpdateRequest updateRequest = new UpdateRequest(fieldName, "_doc", id);
    // 修改内容
      
    // 提交
    UpdateResponse updateResponse = restClient.update(updateRequest, COMMON_OPTIONS);
    System.out.println("Doc修改完成！==》" + updateResponse.status());
    // 关闭客户端
    closeClient(restClient);
  }

  /**
   * 查找
   * See <a href="https://www.elastic.co/guide/en/elasticsearch/client/java-rest/6.8/java-rest-high-search.html">Search API</a>
   */
  public void search() {
  }
}

工具类Scala版

package com.wuzhou.utils

import java.util.{Objects, Properties}
import com.alibaba.fastjson.JSON
import com.alibaba.fastjson.serializer.SerializerFeature
import org.apache.http.HttpHost
import org.elasticsearch.action.bulk.{BulkRequest, BulkResponse}
import org.elasticsearch.action.index.{IndexRequest, IndexResponse}
import org.elasticsearch.client.{RequestOptions, RestClient, RestClientBuilder, RestHighLevelClient}
import org.elasticsearch.common.xcontent.XContentType

/**
 * @author Y_Kevin
 * @date 2021-01-06 16:52
 */
object EsUtil4Scala {

    /**
     * 获取Elasticsearch配置信息
     */
    private val properties: Properties = PropertiesUtil.load("config.properties")
    private val ES_HOST: String = properties.getProperty("Elasticsearch.host")
    private val ES_HTTP_PORT: Int = properties.getProperty("Elasticsearch.port").toInt
    private val ES_SCHEME: String = properties.getProperty("Elasticsearch.scheme")
    private val restClient: RestHighLevelClient = null

    /**
     * 获取客户端
     *
     * @return RestHighLevelClient
     */
    def getRestClient: RestHighLevelClient = {
        if (restClient == null) {
            val httpHost: HttpHost = new HttpHost(ES_HOST, ES_HTTP_PORT, ES_SCHEME)
            val builder: RestClientBuilder = RestClient.builder(httpHost)
            new RestHighLevelClient(builder)
        } else {
            restClient
        }
    }

    /**
     * 关闭客户端
     *
     * @param restClient 客户端
     */
    def closeClient(restClient: RestHighLevelClient): Unit = {
        if (!Objects.isNull(restClient)) {
            try {
                restClient.close()
            } catch {
                case e: Exception =>
                    e.printStackTrace()
            }
        }
    }

    /**
     * 插入一条
     *
     * @param indexName 索引名称
     * @param source    数据
     */
    def addOneDoc(indexName: String, source: Object): Unit = {
        // 获取客户端
        val restClient: RestHighLevelClient = getRestClient
        val indexRequest: IndexRequest = new IndexRequest(indexName)
        println("source===>" + source)
        // 如果只使用 JSON.toJSONString ，如果source存在List，List只有第一个被解析
        val jsonString: String = JSON.toJSONString(JSON.toJSON(source), SerializerFeature.EMPTY: _*)
        println("jsonString===>" + jsonString)
        indexRequest.source(jsonString, XContentType.JSON).`type`("_doc")
        //      indexRequest.source(source, XContentType.JSON).`type`("_doc")
        // 提交
        val indexResponse: IndexResponse = restClient.index(indexRequest, RequestOptions.DEFAULT)
        println("单条插入完成！==》" + indexResponse.getResult)
        // 关闭客户端
        closeClient(restClient)
    }

    /**
     * 批量插入
     *
     * @param indexName 索引名称
     * @param list      数据
     */
    def addBatchDoc(indexName: String, list: List[Object]): Unit = {
        // 获取客户端
        val restClient: RestHighLevelClient = getRestClient

        val bulkRequest: BulkRequest = new BulkRequest()
        for (source <- list) {
            // 如果只使用 JSON.toJSONString ，如果source存在List，List只有第一个被解析
            val jsonString: String = JSON.toJSONString(JSON.toJSON(source), SerializerFeature.EMPTY: _*)
            bulkRequest.add(new IndexRequest(indexName).source(jsonString, XContentType.JSON).`type`("_doc"))
        }
        // 提交
        val bulkResponse: BulkResponse = restClient.bulk(bulkRequest, RequestOptions.DEFAULT)
        println("多条插入完成！==》" + bulkResponse.status())
        // 关闭客户端
        closeClient(restClient)
    }
}

测试类 (映射)

package com.wuzhou;

import com.wuzhou.domin.KeyShip3;
import com.wuzhou.domin.Ship3;
import com.wuzhou.utils.ESUtil;
import org.junit.Test;

import java.io.IOException;
import java.sql.Timestamp;
import java.util.*;

/**
 * @author Y_Kevin
 * @date 2021-01-05 16:25
 */
public class ESTest {

  /**
   * 测试创建 Ship 实体类映射
   *
   * @throws IOException
   */
  @Test
  public void createOriginalIndex() throws IOException {
    Map<String, Object> mapping = new HashMap<>();
    Map<String, Object> properties = new HashMap<>();

    Map<String, String> ts = new HashMap<>();
    ts.put("type", "long");
    properties.put("ts", ts);
    Map<String, String> shipname = new HashMap<>();
    shipname.put("type", "text");
    properties.put("shipname", shipname);
    Map<String, String> lon = new HashMap<>();
    lon.put("type", "float");
    properties.put("lon", lon);
    Map<String, String> lat = new HashMap<>();
    lat.put("type", "float");
    properties.put("lat", lat);
    Map<String, String> turn = new HashMap<>();
    turn.put("type", "float");
    properties.put("turn", turn);
    Map<String, String> speed = new HashMap<>();
    speed.put("type", "float");
    properties.put("speed", speed);
    Map<String, String> course = new HashMap<>();
    course.put("type", "float");
    properties.put("course", course);
    Map<String, String> heading = new HashMap<>();
    heading.put("type", "long");
    properties.put("heading", heading);
    Map<String, String> status_text = new HashMap<>();
    status_text.put("type", "text");
    properties.put("status_text", status_text);
    Map<String, String> accuracy = new HashMap<>();
    accuracy.put("type", "boolean");
    properties.put("accuracy", accuracy);
    Map<String, String> shiptype_text = new HashMap<>();
    shiptype_text.put("type", "text");
    properties.put("shiptype_text", shiptype_text);
    Map<String, String> category = new HashMap<>();
    category.put("type", "text");
    properties.put("category", category);
    Map<String, String> mmsi = new HashMap<>();
    mmsi.put("type", "text");
    properties.put("mmsi", mmsi);

    mapping.put("properties", properties);

    ESUtil util = new ESUtil();
    util.createMappings("ship_original", mapping);
  }

  /**
   * 测试创建 与 mmsi为 key Ship为value的映射
   *
   * @throws IOException
   */
  @Test
  public void createGroupIndex() throws IOException {
    Map<String, Object> mapping = new HashMap<>();
    Map<String, Object> properties = new HashMap<>();

    Map<String, String> key_mmsi = new HashMap<>();
    key_mmsi.put("type", "text");
    properties.put("key_mmsi", key_mmsi);

    Map<String, Object> ships = new HashMap<>();
    Map<String, Object> shipProperties = new HashMap<>();

    Map<String, String> ts = new HashMap<>();
    ts.put("type", "long");
    shipProperties.put("ts", ts);
    Map<String, String> shipname = new HashMap<>();
    shipname.put("type", "text");
    shipProperties.put("shipname", shipname);
    Map<String, String> lon = new HashMap<>();
    lon.put("type", "float");
    shipProperties.put("lon", lon);
    Map<String, String> lat = new HashMap<>();
    lat.put("type", "float");
    shipProperties.put("lat", lat);
    Map<String, String> turn = new HashMap<>();
    turn.put("type", "float");
    shipProperties.put("turn", turn);
    Map<String, String> speed = new HashMap<>();
    speed.put("type", "float");
    shipProperties.put("speed", speed);
    Map<String, String> course = new HashMap<>();
    course.put("type", "float");
    shipProperties.put("course", course);
    Map<String, String> heading = new HashMap<>();
    heading.put("type", "long");
    shipProperties.put("heading", heading);
    Map<String, String> status_text = new HashMap<>();
    status_text.put("type", "text");
    shipProperties.put("status_text", status_text);
    Map<String, String> accuracy = new HashMap<>();
    accuracy.put("type", "boolean");
    shipProperties.put("accuracy", accuracy);
    Map<String, String> shiptype_text = new HashMap<>();
    shiptype_text.put("type", "text");
    shipProperties.put("shiptype_text", shiptype_text);
    Map<String, String> category = new HashMap<>();
    category.put("type", "text");
    shipProperties.put("category", category);
    Map<String, String> mmsi = new HashMap<>();
    mmsi.put("type", "text");
    shipProperties.put("mmsi", mmsi);

    ships.put("properties", shipProperties);
    properties.put("shipList", ships);
    mapping.put("properties", properties);

    ESUtil util = new ESUtil();
    util.createMappings("ship_group_by_mmsi", mapping);
  }

  @Test
  public void deleteIndex() throws IOException {
    ESUtil util = new ESUtil();
    //util.deleteIndex("ship_group_by_mmsi");
    util.deleteIndex("ship_original");
  }

  @Test
  public void addOneDocShip() throws IOException {
    ESUtil util = new ESUtil();
    Ship3 ship = new Ship3(new Timestamp(1521053005000000L), "",
            121.540085f, 31.39545f, 0.0f,
            9.2f, 273.0f, 273,
            "机动航行", false, "不明",
            "B", "412351040");
    util.addOneDoc("ship_original", ship);
  }

  @Test
  public void addBatchDocShip() throws IOException {
    ESUtil util = new ESUtil();
    List<Object> list = new ArrayList<>();

    Ship3 ship = new Ship3(new Timestamp(1521053005000000L), "",
            121.540085f, 31.39545f, 0.0f,
            9.2f, 273.0f, 273,
            "机动航行", false, "不明",
            "B", "412351040");
    list.add(ship);
    list.add(ship);
    list.add(ship);

    util.addBatchDoc("ship_original", list);
  }

  @Test
  public void addOneDocKeyShip() throws IOException {
    ESUtil util = new ESUtil();
    Ship3 ship = new Ship3(new Timestamp(1521053005000000L), "",
            121.540085f, 31.39545f, 0.0f,
            9.2f, 273.0f, 273,
            "机动航行", false, "不明",
            "B", "412351040");
    List<Ship3> list = new ArrayList<>();
    list.add(ship);
    list.add(ship);
    list.add(ship);

    KeyShip3 keyShip = new KeyShip3();
    keyShip.setKey_mmsi("412351040");
    keyShip.setShipList(list);

    util.addOneDoc("ship_group_by_mmsi", keyShip);
  }

  @Test
  public void addBatchDocKeyShip() throws IOException {
    ESUtil util = new ESUtil();
    List<Object> list = new ArrayList<>();

    Ship3 ship = new Ship3(new Timestamp(1521053005000000L), "",
            121.540085f, 31.39545f, 0.0f,
            9.2f, 273.0f, 273,
            "机动航行", false, "不明",
            "B", "412351040");
    List<Ship3> ships = new ArrayList<>();
    ships.add(ship);
    ships.add(ship);
    ships.add(ship);

    KeyShip3 keyShip = new KeyShip3();
    keyShip.setKey_mmsi("412351040");
    keyShip.setShipList(ships);

    list.add(keyShip);
    keyShip.setKey_mmsi("412351040");
    list.add(keyShip);

    util.addBatchDoc("ship_group_by_mmsi", list);
  }

  @Test
  public void deleteDoc() throws IOException {
    ESUtil util = new ESUtil();
    //util.deleteDoc("ship_group_by_mmsi", "j0ZW23YBfaU9GHb6SWvX");
    util.deleteDoc("ship_original", "lEbj2nYBfaU9GHb6zD8C");
  }

  @Test
  public void deleteDocByQuery() throws IOException {
    ESUtil util = new ESUtil();
    util.deleteDocByQuery("key_mmsi", "412351041", "ship_original");
  }

  @Test
  public void deleteAllDoc() throws IOException {
    ESUtil util = new ESUtil();
    util.deleteAllDoc("ship_original");
  }
}

192.168.1.101:9200/ship_original/_search

192.168.1.101:9200/ship_original

192.168.1.101:9200/_cat/indices

192.168.1.101:5601/app/kibana#/dev_tools/console?_g=()

ES与Spark交互 (Spark2.3.2)

文档

https://www.elastic.co/guide/en/elasticsearch/hadoop/current/install.html

https://www.elastic.co/guide/en/elasticsearch/hadoop/6.8/spark.html

https://www.elastic.co/guide/en/elasticsearch/hadoop/current/configuration.html#configuration-serialization

依赖

<dependency>
    <groupId>org.elasticsearch</groupId>
    <artifactId>elasticsearch-spark-20_2.11</artifactId>
    <version>6.8.4</version>
</dependency>

配置 + 使用

// 创建配置对象
val sparkConf: SparkConf = new SparkConf()
sparkConf.setMaster("local[*]")
sparkConf.setAppName("test")
sparkConf.set("spark.eventLog.enabled", "true")
sparkConf.set("es.index.auto.create", "true")
sparkConf.set("es.nodes", "192.168.5.53")
sparkConf.set("es.port", "9200")
sparkConf.set("es.batch.size.entries", "100000")
sparkConf.set("es.batch.size.bytes", "300mb")
sparkConf.set("es.batch.write.refresh", "fasle")
// 创建SparkSQL的环境对象
val sparkSession: SparkSession = SparkSession.builder().config(sparkConf).getOrCreate()
val sparkContext: SparkContext = sparkSession.sparkContext

val dataFrame: DataFrame = sparkSession.sql(sql)

import org.elasticsearch.spark.sql._
// 使用ES-SparkAPI将原数据存进ES  （ship_original）为index
dataFrame.saveToEs("ship_original/_doc")

ES
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配置文件 config.properties

工具类 ESUtil

工具类Scala版

测试类 (映射)

ES与Spark交互 (Spark2.3.2)

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