前言
每年天猫双十一购物节，都会有一块巨大的实时作战大屏，展现当前的销售情况。这种炫酷的页面背后，其实有着非常强大的技术支撑，而这种场景其实就是实时报表分析。
1、业务需求概述
模拟交易订单数据，发送至分布式消息队列Kafka，实时消费交易订单数据进行分析处理，业务流程图如下所示：
实时从Kafka消费交易订单数据，按照不同维度实时统计【销售订单额】，最终报表Report结果存储MySQL数据库；
二 项目代码
1.模拟交易数据
编写程序，实时产生交易订单数据，使用Json4J类库转换数据为JSON字符，发送Kafka Topic中，代码如下：
// =================================== 订单实体类 ================================= package cn.itcast.spark.mock/**
- 订单实体类（Case Class）
- @param orderId 订单ID
- @param userId 用户ID
- @param orderTime 订单日期时间
- @param ip 下单IP地址
- @param orderMoney 订单金额
- @param orderStatus 订单状态
*/
case class OrderRecord(
orderId: String,
userId: String,
orderTime: String,
ip: String,
orderMoney: Double,
orderStatus: Int
)// ================================== 模拟订单数据 ==================================
package cn.itcast.spark.mockimport java.util.Properties
import org.apache.commons.lang3.time.FastDateFormat
import org.apache.kafka.clients.producer.{KafkaProducer, ProducerRecord}
import org.apache.kafka.common.serialization.StringSerializer
import org.json4s.jackson.Jsonimport scala.util.Random
/**
- 模拟生产订单数据，发送到Kafka Topic中
Topic中每条数据Message类型为String，以JSON格式数据发送- 数据转换：
将Order类实例对象转换为JSON格式字符串数据（可以使用json4s类库）*/
object MockOrderProducer {def main(args: Array[String]): Unit = { var producer: KafkaProducer[String, String] = null try { // 1. Kafka Client Producer 配置信息 val props = new Properties() props.put("bootstrap.servers", "node1.itcast.cn:9092") props.put("acks", "1") props.put("retries", "3") props.put("key.serializer", classOf[StringSerializer].getName) props.put("value.serializer", classOf[StringSerializer].getName) // 2. 创建KafkaProducer对象，传入配置信息 producer = new KafkaProducer[String, String](props) // 随机数实例对象 val random: Random = new Random() // 订单状态：订单打开 0，订单取消 1，订单关闭 2，订单完成 3 val allStatus =Array(0, 1, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) while(true){ // 每次循环 模拟产生的订单数目 val batchNumber: Int = random.nextInt(1) + 5 (1 to batchNumber).foreach{number => val currentTime: Long = System.currentTimeMillis() val orderId: String = s"${getDate(currentTime)}%06d".format(number) val userId: String = s"${1 + random.nextInt(5)}%08d".format(random.nextInt(1000)) val orderTime: String = getDate(currentTime, format="yyyy-MM-dd HH:mm:ss.SSS") val orderMoney: String = s"${5 + random.nextInt(500)}.%02d".format(random.nextInt(100)) val orderStatus: Int = allStatus(random.nextInt(allStatus.length)) // 3. 订单记录数据 val orderRecord: OrderRecord = OrderRecord( orderId, userId, orderTime, getRandomIp, orderMoney.toDouble, orderStatus ) // 转换为JSON格式数据 val orderJson = new Json(org.json4s.DefaultFormats).write(orderRecord) println(orderJson) // 4. 构建ProducerRecord对象 val record = new ProducerRecord[String, String]("orderTopic", orderJson) // 5. 发送数据：def send(messages: KeyedMessage[K,V]*), 将数据发送到Topic producer.send(record) } Thread.sleep(random.nextInt(100) + 500) } }catch { case e: Exception => e.printStackTrace() }finally { if(null != producer) producer.close() } } /**=================获取当前时间=================*/ def getDate(time: Long, format: String = "yyyyMMddHHmmssSSS"): String = { val fastFormat: FastDateFormat = FastDateFormat.getInstance(format) val formatDate: String = fastFormat.format(time) // 格式化日期 formatDate } /**================= 获取随机IP地址 =================*/ def getRandomIp: String = { // ip范围 val range: Array[(Int, Int)] = Array( (607649792,608174079), //36.56.0.0-36.63.255.255 (1038614528,1039007743), //61.232.0.0-61.237.255.255 (1783627776,1784676351), //106.80.0.0-106.95.255.255 (2035023872,2035154943), //121.76.0.0-121.77.255.255 (2078801920,2079064063), //123.232.0.0-123.235.255.255 (-1950089216,-1948778497),//139.196.0.0-139.215.255.255 (-1425539072,-1425014785),//171.8.0.0-171.15.255.255 (-1236271104,-1235419137),//182.80.0.0-182.92.255.255 (-770113536,-768606209),//210.25.0.0-210.47.255.255 (-569376768,-564133889) //222.16.0.0-222.95.255.255 ) // 随机数：IP地址范围下标 val random = new Random() val index = random.nextInt(10) val ipNumber: Int = range(index)._1 + random.nextInt(range(index)._2 - range(index)._1) // 转换Int类型IP地址为IPv4格式 number2IpString(ipNumber) } /**=================将Int类型IPv4地址转换为字符串类型=================*/ def number2IpString(ip: Int): String = { val buffer: Array[Int] = new Array[Int](4) buffer(0) = (ip >> 24) & 0xff buffer(1) = (ip >> 16) & 0xff buffer(2) = (ip >> 8) & 0xff buffer(3) = ip & 0xff // 返回IPv4地址 buffer.mkString(".") }
}
2.创建Maven模块
创建Maven模块，加入相关依赖，具体内如如下：
<repositories>
<repository>
<id>aliyun</id>
<url>http://maven.aliyun.com/nexus/content/groups/public/</url>
</repository>
<repository>
<id>cloudera</id>
<url>https://repository.cloudera.com/artifactory/cloudera-repos/</url>
</repository>
<repository>
<id>jboss</id>
<url>http://repository.jboss.com/nexus/content/groups/public</url>
</repository>
</repositories><properties> <scala.version>2.11.12</scala.version> <scala.binary.version>2.11</scala.binary.version> <spark.version>2.4.5</spark.version> <hadoop.version>2.6.0-cdh5.16.2</hadoop.version> <kafka.version>2.0.0</kafka.version> <mysql.version>8.0.19</mysql.version> </properties> <dependencies> <!-- 依赖Scala语言 --> <dependency> <groupId>org.scala-lang</groupId> <artifactId>scala-library</artifactId> <version>${scala.version}</version> </dependency> <!-- Spark Core 依赖 --> <dependency> <groupId>org.apache.spark</groupId> <artifactId>spark-core_${scala.binary.version}</artifactId> <version>${spark.version}</version> </dependency> <!-- Spark SQL 依赖 --> <dependency> <groupId>org.apache.spark</groupId> <artifactId>spark-sql_${scala.binary.version}</artifactId> <version>${spark.version}</version> </dependency> <!-- Structured Streaming + Kafka 依赖 --> <dependency> <groupId>org.apache.spark</groupId> <artifactId>spark-sql-kafka-0-10_${scala.binary.version}</artifactId> <version>${spark.version}</version> </dependency> <!-- Hadoop Client 依赖 --> <dependency> <groupId>org.apache.hadoop</groupId> <artifactId>hadoop-client</artifactId> <version>${hadoop.version}</version> </dependency> <!-- Kafka Client 依赖 --> <dependency> <groupId>org.apache.kafka</groupId> <artifactId>kafka-clients</artifactId> <version>2.0.0</version> </dependency> <!-- 根据ip转换为省市区 --> <dependency> <groupId>org.lionsoul</groupId> <artifactId>ip2region</artifactId> <version>1.7.2</version> </dependency> <!-- MySQL Client 依赖 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>${mysql.version}</version> </dependency> <!-- JSON解析库：fastjson --> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.47</version> </dependency> </dependencies> <build> <outputDirectory>target/classes</outputDirectory> <testOutputDirectory>target/test-classes</testOutputDirectory> <resources> <resource> <directory>${project.basedir}/src/main/resources</directory> </resource> </resources> <!-- Maven 编译的插件 --> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.0</version> <configuration> <source>1.8</source> <target>1.8</target> <encoding>UTF-8</encoding> </configuration> </plugin> <plugin> <groupId>net.alchim31.maven</groupId> <artifactId>scala-maven-plugin</artifactId> <version>3.2.0</version> <executions> <execution> <goals> <goal>compile</goal> <goal>testCompile</goal> </goals> </execution> </executions> </plugin> </plugins> </build></code></pre></div></div><h4 id="3nnid" name="%E9%A1%B9%E7%9B%AE%E7%BB%93%E6%9E%84%E5%A6%82%E4%B8%8B:">项目结构如下:</h4><figure class=""><div class="rno-markdown-img-url" style="text-align:center"><div class="rno-markdown-img-url-inner" style="width:49.49%"><div style="width:100%"><img src="https://cdn.static.attains.cn/app/developer-bbs/upload/1723345258131983949.png" /></div><div class="figure-desc">在这里插入图片描述</div></div></div></figure><h3 id="8tehc" name="3.%E6%A0%B8%E5%BF%83%E4%BB%A3%E7%A0%81">3.核心代码</h3><p>RealTimeOrderReport.java</p><div class="rno-markdown-code"><div class="rno-markdown-code-toolbar"><div class="rno-markdown-code-toolbar-info"><div class="rno-markdown-code-toolbar-item is-type"><span class="is-m-hidden">代码语言：</span>javascript</div></div><div class="rno-markdown-code-toolbar-opt"><div class="rno-markdown-code-toolbar-copy"><i class="icon-copy"></i><span class="is-m-hidden">复制</span></div></div></div><div class="developer-code-block"><pre class="prism-token token line-numbers language-javascript"><code class="language-javascript" style="margin-left:0">package cn.itcast.spark.reportimport java.util.concurrent.TimeUnit
import org.apache.spark.sql._
import org.apache.spark.sql.functions._
import org.apache.spark.sql.streaming.{OutputMode, Trigger}
import org.apache.spark.sql.expressions.{UserDefinedAggregateFunction, UserDefinedFunction}
import org.apache.spark.sql.types.{DataType, DataTypes}
import org.lionsoul.ip2region.{DataBlock, DbConfig, DbSearcher}def printToConsole(dataFrame: DataFrame) = { dataFrame.writeStream .format("console") .outputMode(OutputMode.Update()) .option("numRows","50") .option("truncate","false") .start() } def main(args: Array[String]): Unit = { //1.获取spark实例对象 val spark: SparkSession = SparkSession.builder() .appName("isDemo") .master("local[3]") .config("spark.sql.shuffle.partitions", "3") .getOrCreate() import spark.implicits._ val dataFrame: DataFrame = spark.readStream .format("kafka") .option("kafka.bootstrap.servers", "node1.itcast.cn:9092") .option("subscribe", "orderTopic") .load() .selectExpr("CAST (value AS STRING)")// printToConsole(dataFrame)
val ip_to_region: UserDefinedFunction = udf((ip: String) => {
// 1. 创建DbSearch对象，指定数据字典文件位置
val dbSearcher = new DbSearcher(new DbConfig(), "src/main/dataset/ip2region.db")
// 2. 传递IP地址，解析获取数据
val dataBlock: DataBlock = dbSearcher.btreeSearch(ip)
// 3. 获取解析省份和城市
val region: String = dataBlock.getRegion
//println(region) // 中国|0|海南省|海口市|教育网
val Array(_, _, pronvice, city, _) = region.split("\|")
(pronvice, city)
})
val frame: DataFrame = dataFrame
.select(
get_json_object("value", ".ip").as("ip"),
get_json_object("value", ".orderMoney")
.cast(DataTypes.createDecimalType(10, 2))
.as("money"),
get_json_object("value", ".orderStatus").as("status")
)
.filter($"status" === 0)
.withColumn("region", ip_to_region($"ip"))
.select(
$"region._1".as("province"),
$"region._2".as("city"),
$"money"
)// printToConsole(frame)
// /**
// * 订单实体类（Case Class）
// * @param orderId 订单ID
// * @param userId 用户ID
// * @param orderTime 订单日期时间
// * @param ip 下单IP地址
// * @param orderMoney 订单金额
// * @param orderStatus 订单状态
// */
//// printToConsole(dframe)
//SELECT "国家" as type, SUM(money) as totalMoney FROM tmp_view
//SELECT province as type, SUM(money) as totalMoney FROM tmp_view GROUP BY province
//SELECT city as type, SUM(money) as totalMoney FROM (SELECT * FROM tmp_view WHERE city in ("北京市", "上海市", "深圳市", "广州市", "杭州市", "成都市", "南京市", "武汉市", "西安市"))t GROUP BY t.city
frame.createOrReplaceTempView("tmp_view")
val f: DataFrame = spark.sql(
"""
|SELECT "国家" as type, SUM(money) as totalMoney FROM tmp_view
""".stripMargin)
val f2: DataFrame = spark.sql(
"""
|SELECT province as type, SUM(money) as totalMoney FROM tmp_view GROUP BY province
""".stripMargin)
val f3: DataFrame = spark.sql(
"""
|SELECT city as type, SUM(money) as totalMoney FROM (SELECT * FROM tmp_view WHERE city in ("北京市", "上海市", "深圳市", "广州市", "杭州市", "成都市", "南京市", "武汉市", "西安市"))t GROUP BY t.city
""".stripMargin)
// printToConsole(f3)
saveToMySQL(f,"total")
saveToMySQL(f2,"totalprovince")
saveToMySQL(f3,"totalcity")spark.streams.awaitAnyTermination() } def saveToMySQL(streamDF:DataFrame,reportType:String)={ streamDF.writeStream .outputMode(OutputMode.Complete()) .queryName(s"${reportType}") .foreachBatch((batchDF:DataFrame,batchId:Long)=>{ batchDF.coalesce(1) .write.mode(SaveMode.Overwrite) .format("jdbc") .option("url","jdbc:mysql://node1.itcast.cn:3306/?serverTimezone=UTC&characterEncoding=utf8&useUnicode=true") .option("driver","com.mysql.cj.jdbc.Driver") .option("user","root") .option("password","123456") .option("dbtable",s"db_spark.tb_order${reportType}") .save() } ) .option("checkpointLocation", s"datas/spark/structured-ckpt-${System.currentTimeMillis()}") .start() }
}
OrderRecord.scala
package cn.itcast.spark.mock
/**
- 订单实体类（Case Class）
- @param orderId 订单ID
- @param userId 用户ID
- @param orderTime 订单日期时间
- @param ip 下单IP地址
- @param orderMoney 订单金额
@param orderStatus 订单状态
*/
case class OrderRecord(
orderId: String,
userId: String,
orderTime: String,
ip: String,
orderMoney: Double,
orderStatus: Int
)
总结
总结：
实时报表分析是近年来很多公司采用的报表统计方案之一，其中最主要的应用就是实时大屏展示。利用流式计算实时得出结果直接被推送到前端应用，实时显示出重要指标的变换情况。
最典型的案例便是淘宝双十一活动，每年双十一购物节，除疯狂购物外，最引人注目的就是双十一大屏不停跳跃的成交总额。在整个计算链路中包括从天猫交易下单购买到数据采集，数据计算，数据校验，最终落到双十一大屏上展示的全链路时间压缩在5秒以内，顶峰计算性能高达数三十万笔订单/秒，通过多条链路流计算备份确保万无一失。
这次的双十一实时报表分析实战主要用SQL编写,尚未用DSL编写,这是有待完善的地方.