influxdb产生实时数据
开发工具：idea 简历maven工程
org.influxdb
influxdb-java
2.17
com.github.javafaker
javafaker
1.0.2
java工程钟创立两个java文件，目录结构如下
influxDBConnection文件中添加如下代码
package com.influx;
import org.influxdb.InfluxDB;
import org.influxdb.InfluxDBFactory;
import org.influxdb.dto.*;
import java.util.List;
import java.util.Map;
import java.util.concurrent.TimeUnit;
public class InfluxDBConnection {
// 用户名
private String username;
// 密码
private String password;
// 连接地址
private String openurl;
// 数据库
private String database;
// 保留策略
private String retentionPolicy;
private InfluxDB influxDB;
public InfluxDBConnection(String username, String password, String openurl, String database,
String retentionPolicy) {
this.username = username;
this.password = password;
this.openurl = openurl;
this.database = database;
this.retentionPolicy = retentionPolicy == null || retentionPolicy.equals("") ? "autogen" : retentionPolicy;
influxDbBuild();
}
/**
* 创建数据库
*
* @param dbName
*/
@SuppressWarnings("deprecation")
public void createDB(String dbName) {
influxDB.createDatabase(dbName);
}
/**
* 删除数据库
*
* @param dbName
*/
@SuppressWarnings("deprecation")
public void deleteDB(String dbName) {
influxDB.deleteDatabase(dbName);
}
/**
* 测试连接是否正常
*
* @return true 正常
*/
public boolean ping() {
boolean isConnected = false;
Pong pong;
try {
pong = influxDB.ping();
if (pong != null) {
isConnected = true;
}
} catch (Exception e) {
e.printStackTrace();
}
return isConnected;
}
/**
* 连接时序数据库 ，若不存在则创建
*
* @return
*/
public InfluxDB influxDbBuild() {
if (influxDB == null) {
influxDB = InfluxDBFactory.connect(openurl, username, password);
}
try {
// if (!influxDB.databaseExists(database)) {
// influxDB.createDatabase(database);
// }
} catch (Exception e) {
// 该数据库可能设置动态代理，不支持创建数据库
// e.printStackTrace();
} finally {
influxDB.setRetentionPolicy(retentionPolicy);
}
influxDB.setLogLevel(InfluxDB.LogLevel.NONE);
return influxDB;
}
/**
* 创建自定义保留策略
*
* @param policyName
* 策略名
* @param duration
* 保存天数
* @param replication
* 保存副本数量
* @param isDefault
* 是否设为默认保留策略
*/
public void createRetentionPolicy(String policyName, String duration, int replication, Boolean isDefault) {
String sql = String.format("CREATE RETENTION POLICY \"%s\" ON \"%s\" DURATION %s REPLICATION %s ", policyName,
database, duration, replication);
if (isDefault) {
sql = sql + " DEFAULT";
}
this.query(sql);
}
/**
* 创建默认的保留策略
*
* @param ：default，保存天数：30天，保存副本数量：1
* 设为默认保留策略
*/
public void createDefaultRetentionPolicy() {
String command = String.format("CREATE RETENTION POLICY \"%s\" ON \"%s\" DURATION %s REPLICATION %s DEFAULT",
"default", database, "30d", 1);
this.query(command);
}
/**
* 查询
*
* @param command
* 查询语句
* @return
*/
public QueryResult query(String command) {
return influxDB.query(new Query(command, database));
}
/**
* 插入
*
* @param measurement
* 表
* @param tags
* 标签
* @param fields
* 字段
*/
public void insert(String measurement, Map tags, Map fields, long time,
TimeUnit timeUnit) {
Point.Builder builder = Point.measurement(measurement);
builder.tag(tags);
builder.fields(fields);
if (0 != time) {
builder.time(time, timeUnit);
}
influxDB.write(database, retentionPolicy, builder.build());
}
/**
* 批量写入测点
*
* @param batchPoints
*/
public void batchInsert(BatchPoints batchPoints) {
influxDB.write(batchPoints);
// influxDB.enableGzip();
// influxDB.enableBatch(2000,100,TimeUnit.MILLISECONDS);
// influxDB.disableGzip();
// influxDB.disableBatch();
}
/**
* 批量写入数据
*
* @param database
* 数据库
* @param retentionPolicy
* 保存策略
* @param consistency
* 一致性
* @param records
* 要保存的数据（调用BatchPoints.lineProtocol()可得到一条record）
*/
public void batchInsert(final String database, final String retentionPolicy, final InfluxDB.ConsistencyLevel consistency,
final List records) {
influxDB.write(database, retentionPolicy, consistency, records);
}
/**
* 删除
*
* @param command
* 删除语句
* @return 返回错误信息
*/
public String deleteMeasurementData(String command) {
QueryResult result = influxDB.query(new Query(command, database));
return result.getError();
}
/**
* 关闭数据库
*/
public void close() {
influxDB.close();
}
/**
* 构建Point
*
* @param measurement
* @param time
* @param fields
* @return
*/
public Point pointBuilder(String measurement, long time, Map tags, Map fields) {
Point point = Point.measurement(measurement).time(time, TimeUnit.MILLISECONDS).tag(tags).fields(fields).build();
return point;
}
}
InfluxDBManager中编写数据写入代码
package com.influx;
import com.github.javafaker.Faker;
import com.mysql.cj.x.protobuf.MysqlxDatatypes;
import org.influxdb.InfluxDB;
import org.influxdb.dto.QueryResult;
import java.util.HashMap;
import java.util.Locale;
import java.util.concurrent.TimeUnit;
public class InfluxDBManager {
public static void main(String[] args) throws InterruptedException {
//这一行代码数据库名，表名，ip地址，还有持久策略要根据每个人实际情况填写
InfluxDBConnection influxDBConnection = new InfluxDBConnection("influx", "influx", "http://192.168.224.129:8086", "influxdb", "influx_retention");
Faker faker = new Faker(new Locale("zh-CN"));
String[] areas = {"南","北","东","西"};
Integer[] altitudes = new Integer[]{500,800,1000,1500};
int k = 1;
while(true){
System.out.println("当前是第轮插入数据:"+ k);
int al_intdex = (int)Math.floor(Math.random() * altitudes.length);
int ar_index = (int)Math.floor(Math.random() * areas.length);
HashMap hashMap = new HashMap();
hashMap.put("altitude", altitudes[al_intdex].toString());
hashMap.put("area", areas[ar_index].toString());
HashMap stringObjectHashMap = new HashMap();
stringObjectHashMap.put("temperature", faker.number().numberBetween(10,30));
stringObjectHashMap.put("humidity", faker.number().numberBetween(10,30));
influxDBConnection.insert("weather", hashMap, stringObjectHashMap, System.currentTimeMillis(), TimeUnit.MILLISECONDS);
Thread.sleep(faker.number().numberBetween(500,1000));
k++;
}
}
}