Java整合InfluxDB

<dependency>
   <groupId>org.influxdb</groupId>
   <artifactId>influxdb-java</artifactId>
   <version>2.23</version>
</dependency>

package world.xuewei;
import org.influxdb.InfluxDB;
import org.influxdb.InfluxDBFactory;
import org.influxdb.dto.BatchPoints;
import org.influxdb.dto.Point;
import org.influxdb.dto.Query;
import org.influxdb.dto.QueryResult;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import java.util.Date;
import java.util.List;
import java.util.concurrent.TimeUnit;
public class InfluxConnTest {
    private InfluxDB influxDB;
    @Before
    public void getConnection() {
        influxDB = InfluxDBFactory.connect("http://ip:port", "username", "password");
    }
    @After
    public void closeConnection() {
        influxDB.close();
    }
    /**
     * 库的基本操作
     */
    @Test
    public void testDataBase() {
        // 创建一个库 create database 库名
        influxDB.query(new Query("create database logs"));
        // 使用一个库
        influxDB.setDatabase("history");
        // 查询存在那些库
        QueryResult queryResult = influxDB.query(new Query("show databases"));
        System.out.println(queryResult);
        // 删除一个库
        influxDB.query(new Query("drop database logs"));
        // 判断库是否存在 需要使用 query 查询,查询之后再结果中进行判断处理
        boolean logs = influxDB.databaseExists("logs"); // 已过时
        QueryResult result = influxDB.query(new Query("show databases"));
        List<QueryResult.Result> results = result.getResults();
        results.forEach(res -> {
            List<QueryResult.Series> series = res.getSeries();
            for (QueryResult.Series value : series) {
                List<List<Object>> values = value.getValues();
                values.forEach(System.out::println);
            }
        });
    }
    /**
     * 表的基本操作
     */
    @Test
    public void testMeasurement() {
        // 查看所有表
        QueryResult queryResult = influxDB.query(new Query("show measurements"));
        System.out.println(queryResult);
        // 删除一个表
        influxDB.query(new Query("drop measurement test"));
    }
    /**
     * 插入单条数据
     */
    @Test
    public void testInsert() {
        influxDB.setDatabase("history");
        Point point = Point.measurement("actual")
                .tag("id", "10")
                .tag("origin", "slave")
                .addField("cpu", 25.0)
                .addField("wind", 19.0)
                .addField("power", 34.2)
                .time(new Date().getTime(), TimeUnit.MILLISECONDS) // 不指定时间的话默认生成
                .build();
        influxDB.write(point);
    }
    /**
     * 插入批量数据
     */
    @Test
    public void testBatchInsert() {
        influxDB.setDatabase("history");
        Point point = Point.measurement("actual")
                .tag("id", "10")
                .tag("origin", "slave")
                .addField("cpu", 25.0)
                .addField("wind", 19.0)
                .addField("power", 34.2)
                .time(new Date().getTime(), TimeUnit.MILLISECONDS)
                .build();
        influxDB.write(BatchPoints.builder().points(point).build());
    }
    /**
     * 查询数据
     */
    @Test
    public void testQuery() {
        influxDB.setDatabase("history");
        QueryResult queryResult = influxDB.query(new Query(" select * from actual"));
        System.out.println(queryResult);
        List<QueryResult.Result> results = queryResult.getResults();
        for (QueryResult.Result result : results) {
            List<QueryResult.Series> series = result.getSeries();
            for (QueryResult.Series serie : series) {
                List<String> columns = serie.getColumns();
                List<List<Object>> values = serie.getValues();
                for (int i = 0; i < values.size(); i++) {
                    List<Object> points = values.get(i);
                    for (int j = 0; j < points.size(); j++) {
                        System.out.println("column: " + columns.get(j) + " value: " + points.get(j));
                    }
                    System.out.println("=======================================");
                }
            }
        }
    }
    /**
     * 保留策略
     */
    @Test
    public void testPolicy() {
        // 选择一个库
        influxDB.setDatabase("history");
        // 查询当前库策略
        QueryResult queryResult = influxDB.query(new Query("show retention policies"));
        System.out.println(queryResult);
        // 创建一个保留策略
        influxDB.query(new Query("create retention policy history_policy on history duration 168h   replication 1 shard duration 168h default"));
        // 查询当前库策略
        QueryResult queryResult1 = influxDB.query(new Query("show retention policies"));
        System.out.println(queryResult1);
        // 修改默认策略
        influxDB.query(new Query("alter retention policy autogen on history default "));
        // 删除策略
        influxDB.query(new Query("drop retention policy history_policy on history"));
        // 查询当前库策略
        QueryResult queryResult2 = influxDB.query(new Query("show retention policies"));
        System.out.println(queryResult2);
    }
}