Scala定时任务启动例子

Scala定时任务启动例子

Scala代码

package com.scala.test

import java.time.LocalDateTime
import java.util.concurrent.Executors
import scala.concurrent.duration._
import org.apache.spark.sql.SparkSession

object TimingTaskTest {
  def main(args: Array[String]): Unit = {
    val spark = SparkSession.builder()
      .appName("TimingTaskTest")
      .master("local[*]") // Replace with your Spark cluster configuration
      .getOrCreate()

    val scheduler = Executors.newScheduledThreadPool(5)

    // Define the task to be executed
    val task = new Runnable {
      def run(): Unit = {
        // Print the current time
        val currentTime = LocalDateTime.now().toLocalTime
        println(s"定时任务：Current time: $currentTime")

        // Add your logic here to perform the daily job
        // ...
      }
    }

    // Calculate the initial delay until the next 16:40:00
    val initialDelay = {
      val now = LocalDateTime.now()
      val targetTime = now.withHour(18).withMinute(36).withSecond(0)
      val delay = java.time.Duration.between(now, targetTime).toMillis.millis
      if (delay > 0.millis) delay else 1.day + delay
    }

    // Schedule the task to run every day at 16:40:00
    scheduler.scheduleAtFixedRate(task, initialDelay.toMillis, 1.day.toMillis, java.util.concurrent.TimeUnit.MILLISECONDS)
    println("End")
  }
}

控制台输出：

End
定时任务：Current time: 18:36:00.254