Scala Level类代码示例

//设置package包名称以及导入依赖的类
package com.twitter.finagle.builder

import com.twitter.finagle.{Failure, RequestException}
import java.io.IOException
import java.util.logging.{Level, Logger}
import org.junit.runner.RunWith
import org.mockito.Matchers.{any, eq => mockitoEq}
import org.mockito.Mockito.{never, verify}
import org.scalatest.FunSuite
import org.scalatest.junit.JUnitRunner
import org.scalatest.mock.MockitoSugar

@RunWith(classOf[JUnitRunner])
class SourceTrackingMonitorTest extends FunSuite with MockitoSugar {
  test("handles unrolling properly") {
    val logger = mock[Logger]
    val monitor = new SourceTrackingMonitor(logger, "qux")
    val e = new Exception
    val f1 = new Failure("foo", Some(e), sources = Map(Failure.Source.Service -> "tweet"))
    val f2 = new Failure("bar", Some(f1))
    val exc = new RequestException(f2)
    exc.serviceName = "user"
    monitor.handle(exc)
    verify(logger).log(
      Level.SEVERE,
      "The 'qux' service " +
        Seq("user", "tweet").mkString(" on behalf of ") +
        " threw an exception",
      exc
    )
  }

  test("logs IOExceptions at Level.FINE") {
    val logger = mock[Logger]
    val ioEx = new IOException("hi")
    val monitor = new SourceTrackingMonitor(logger, "umm")
    monitor.handle(ioEx)
    verify(logger).log(mockitoEq(Level.FINE), any(), mockitoEq(ioEx))
  }

  test("logs Failure.rejected at Level.FINE") {
    val logger = mock[Logger]
    val monitor = new SourceTrackingMonitor(logger, "umm")
    val rejected = Failure.rejected("try again")
    monitor.handle(rejected)

    verify(logger).log(mockitoEq(Level.FINE), any(), mockitoEq(rejected))
    verify(logger, never()).log(mockitoEq(Level.WARNING), any(), mockitoEq(rejected))
  }
} 

//设置package包名称以及导入依赖的类
package delorean

import java.nio.file._
import java.util.logging.{Level, Logger}

import delorean.FileOps.{getCurrentPitstop, getTempPitstopFileLocation}

object Delorean {
    val logger: Logger = Logger.getLogger(this.getClass.getName)

    def main(args: Array[String]): Unit = {
        val start: Long = System.currentTimeMillis()
        configureLogger()
        logger.fine(s"Length of Arguments = ${args.length}")

        // Call to configuration singleton to prepare the configuration map
        Configuration

        if (Files.exists(Paths.get(TIME_MACHINE))) deleteTempFileIfNotNeeded()

        if (args.length == 0) Usage("full")
        else ParseOption(args.toList)
        val end: Long = System.currentTimeMillis()
        val timeTaken = end - start
        println(s"Time taken: $timeTaken ms")
    }

    // Because of file stream not getting closed, the temp file which should have been deleted ideally is not getting deleted.
    // This will make sure we will delete it based on the modified Times
    def deleteTempFileIfNotNeeded(): Unit = {
        val lastPitstop = PITSTOPS_FOLDER + getCurrentPitstop
        val tempFile = getTempPitstopFileLocation

        if (lastPitstop.nonEmpty && tempFile.nonEmpty) {
            val lastPitstopTime = Files.getLastModifiedTime(Paths.get(lastPitstop))
            val tempFileTime = Files.getLastModifiedTime(Paths.get(tempFile))

            lastPitstopTime compareTo tempFileTime match {
                case 1 ? Files.delete(Paths.get(getTempPitstopFileLocation))
                case _ ?
            }
        }
    }

    def configureLogger(): Unit = {
        val rootLogger: Logger = Logger.getLogger("")
        rootLogger.getHandlers.foreach(handler ? handler.setLevel(Level.FINEST))
        System.getenv("DELOREAN_LOG_LEVEL") match {
            case "INFO" ? rootLogger.setLevel(Level.INFO)
            case "FINE" ? rootLogger.setLevel(Level.FINE)
            case _ ? rootLogger.setLevel(Level.SEVERE)
        }
    }
} 

//设置package包名称以及导入依赖的类
package subscrobbler

import java.util.logging.Level

import de.umass.lastfm.Caller
import de.umass.lastfm.Chart

object LastFmConnection {
    val apiRootUrlHttps:String = "https://ws.audioscrobbler.com/2.0/"
    val apiRootUrlHttp:String = "http://ws.audioscrobbler.com/2.0/"
    
    private def check(): Boolean = {
        !Chart.getTopTracks(Conf.key).isEmpty
    }
    
    def init(): Unit = {
        val inst = Caller.getInstance()
        inst.setApiRootUrl(apiRootUrlHttps)
        inst.setUserAgent(Conf.userAgent)
        inst.getLogger.setLevel(
            if (Conf.dbgFlag) Level.ALL
            else Level.OFF)

        if (!check()) {
            Caller.getInstance().setApiRootUrl(apiRootUrlHttp)
            if (!check()) {
                throw new Error("No response from ws.audioscrobbler.com/2.0")
            }
        }
    }
} 

//设置package包名称以及导入依赖的类
package com.twitter.finagle.mysql.integration

import com.twitter.finagle.Mysql
import com.twitter.finagle.mysql._
import com.twitter.util.NonFatal
import java.io.{File, FileInputStream}
import java.net.{ServerSocket, BindException}
import java.util.logging.{Level, Logger}
import java.util.Properties

trait IntegrationClient {
  private val logger = Logger.getLogger("integration-client")

  // Check if default mysql port is available.
  val isPortAvailable = try {
    val socket = new ServerSocket(3306)
    socket.close()
    true
  } catch {
    case e: BindException => false
  }

  val propFile = new File(System.getProperty("user.home") +
    "/.finagle-mysql/integration-test.properties")

  val p = new Properties
  val propFileExists = try {
    val fis = new FileInputStream(propFile)
    p.load(fis)
    fis.close()
    true
  } catch {
    case NonFatal(e) =>
      logger.log(Level.WARNING, "Error loading integration.properties, skipping integration test")
      false
  }

  // It's likely that we can run this test
  // if a mysql instance is running and a valid
  // properties file is found which contains
  // mysql credentials.
  val isAvailable = !isPortAvailable && propFileExists

  protected def configureClient(username: String, password: String, db: String) = Mysql.client
    .withCredentials(username, password)
    .withDatabase(db)

  val client: Option[Client with Cursors] = if (isAvailable) {
    logger.log(Level.INFO, "Attempting to connect to mysqld @ localhost:3306")
    val username = p.getProperty("username", "<user>")
    val password = p.getProperty("password", null)
    val db = p.getProperty("db", "test")
    Some(configureClient(username, password, db)
      .newRichClient("localhost:3306"))
  } else {
    None
  }
} 

//设置package包名称以及导入依赖的类
package com.twitter.finagle.util

import java.util.concurrent.ConcurrentLinkedQueue
import java.util.concurrent.atomic.AtomicInteger
import java.util.logging.{Logger, Level}

trait Chan[-T] {
  def !(elem: T)
  def close()
}


trait Proc[-T] extends Chan[T] {
  private[this] val q = new ConcurrentLinkedQueue[T]
  private[this] val nq = new AtomicInteger(0)
  @volatile private[this] var closed = false

  def close() { closed = true }

  def !(elem: T) {
    q.offer(elem)
    if (nq.getAndIncrement() == 0)
      do {
        val elem = q.poll()
        // Swallow exceptions as these would cause
        // unbounded queue growth.
        if (!closed) {
          try receiver(elem) catch {
             case exc: Throwable =>
               Logger.getLogger("").log(Level.WARNING, "Exception thrown in proc", exc)
           }
        }
      } while (nq.decrementAndGet() > 0)
  }

  def receive: T => Unit
  private[this] val receiver = receive
}

object Proc {
  def apply[T](iteratee: T => Unit): Proc[T] = new Proc[T] {
    def receive = iteratee
  }

  val nil: Proc[Any] = new Proc[Any] { def receive = Function.const(()) }
} 

//设置package包名称以及导入依赖的类
package com.twitter.finagle.builder

import com.twitter.finagle.{Failure, SourcedException}
import com.twitter.logging.HasLogLevel
import com.twitter.util.Monitor
import java.io.IOException
import java.util.logging.{Level, Logger}


class SourceTrackingMonitor(logger: Logger, which: String) extends Monitor {
  def handle(exc: Throwable): Boolean = {
    // much like ChannelStatsHandler.exceptionCaught,
    // we don't want these noisy IOExceptions leaking into the logs.
    val level = exc match {
      case _: IOException => Level.FINE
      case f: HasLogLevel => f.logLevel
      case _ => Level.SEVERE
    }
    val unrolled = unrollCauses(exc)
    val msg = if (unrolled.isEmpty)
      s"The '$which' service threw an exception"
    else
      s"The '$which' service ${unrolled.mkString(" on behalf of ")} threw an exception"

    logger.log(level, msg, exc)
    false
  }

  private[this] def unrollCauses(exc: Throwable, res: Seq[String] = Nil): Seq[String] = exc match {
    case null => res.reverse
    case se: SourcedException => unrollCauses(se.getCause, se.serviceName +: res)
    case fail: Failure => fail.getSource(Failure.Source.Service) match {
      case Some(name) => unrollCauses(fail.getCause, name.toString +: res)
      case _ => unrollCauses(fail.getCause, res)
    }
    case _ => unrollCauses(exc.getCause, res)
  }
} 

//设置package包名称以及导入依赖的类
package com.twitter.finagle.mux.lease.exp

import java.util.logging.Level

private[lease] object GarbageCollector {
  private val log = java.util.logging.Logger.getLogger("GarbageCollector")

  val forceNewGc: () => Unit = try {
    // This is a method present in Twitter's JVMs to force
    // a minor collection.
    val meth = Class.forName("com.twitter.hotspot.System").getMethod("minorGc")
    log.log(Level.INFO, "Found com.twitter.hotspot.System.minorGc")
    () => meth.invoke(null)
  } catch {
    case exc: ClassNotFoundException =>
      log.log(
        Level.INFO,
        "Failed to resolve com.twitter.hotspot.System; falling "+
          "back to full GC",
        exc)
      () => System.gc()
  }
} 

//设置package包名称以及导入依赖的类
package com.twitter.finagle.netty4.http.handler

import com.twitter.finagle.http.Fields
import com.twitter.util.StorageUnit
import io.netty.buffer.ByteBufHolder
import io.netty.channel.{ChannelFutureListener, ChannelHandlerContext, ChannelInboundHandlerAdapter}
import io.netty.handler.codec.http._
import java.util.logging.{Level, Logger}

private object PayloadSizeHandler {
  def mk413(v: HttpVersion): FullHttpResponse = {
    val resp = new DefaultFullHttpResponse(v, HttpResponseStatus.REQUEST_ENTITY_TOO_LARGE)
    resp.headers().set(Fields.Connection, "close")
    resp.headers().set(Fields.ContentLength, "0")
    resp
  }
}


private[http] class PayloadSizeHandler(limit: StorageUnit, log: Option[Logger])
  extends ChannelInboundHandlerAdapter {

  def this(limit: StorageUnit) = this(limit, None)

  private[this] val limitBytes = limit.inBytes

  // we don't worry about thread-safety because netty guarantees that reads are
  // serialized and on the same-thread.
  private[this] var discarding = false

  import PayloadSizeHandler.mk413

  override def channelRead(ctx: ChannelHandlerContext, msg: Any): Unit = msg match {
    case http: HttpMessage if HttpUtil.getContentLength(http, -1) > limitBytes =>
      discarding = true
      if (http.isInstanceOf[ByteBufHolder]) {
        http.asInstanceOf[ByteBufHolder].release()
      }
      ctx.writeAndFlush(mk413(http.protocolVersion))
        .addListener(ChannelFutureListener.CLOSE)

      log match {
        case Some(l) if l.isLoggable(Level.FINE) =>
          l.log(Level.FINE, s"rejected an oversize payload (${HttpUtil.getContentLength(http)} bytes) from ${ctx.channel.remoteAddress}")
        case _ =>
      }

    // the session is doomed so we reject chunks
    case chunk: HttpContent if discarding =>
      chunk.release()

    case _ =>
      super.channelRead(ctx, msg)
  }
} 

//设置package包名称以及导入依赖的类
package com.twitter.finagle.thrift

import com.twitter.finagle.{Status, ServiceProxy, Service, WriteException, ServiceException}
import java.util.logging.{Logger, Level}
import org.apache.thrift.TApplicationException
import org.apache.thrift.protocol.{TProtocolFactory, TMessageType}
import org.apache.thrift.transport.TMemoryInputTransport
import com.twitter.util.Future


class ValidateThriftService(
  self: Service[ThriftClientRequest, Array[Byte]],
  protocolFactory: TProtocolFactory
) extends ServiceProxy[ThriftClientRequest, Array[Byte]](self)
{
  @volatile private[this] var isValid = true

  override def apply(req: ThriftClientRequest) =
    if (!isValid) Future.exception(WriteException(InvalidThriftConnectionException()))
    else self(req) onSuccess { bytes =>
      if (!req.oneway && !isResponseValid(bytes)) {
        isValid = false
        Logger.getLogger("finagle-thrift").log(Level.WARNING,
          "Thrift connection was invalidated!")
      }
    }

  override def status = 
    if (!isValid) Status.Closed 
    else self.status
  
  private def isResponseValid(bytes: Array[Byte]) = try {
    val memoryTransport = new TMemoryInputTransport(bytes)
    val iprot = protocolFactory.getProtocol(memoryTransport)
    val reply = iprot.readMessageBegin()
    reply.`type` != TMessageType.EXCEPTION || {
      val exc = TApplicationException.read(iprot)
      iprot.readMessageEnd()
      exc.getType == TApplicationException.INTERNAL_ERROR ||
        exc.getType == TApplicationException.UNKNOWN_METHOD
    }
  } catch {
    case exc: Throwable =>
      Logger.getLogger("finagle-thrift").log(Level.WARNING,
        "Exception while validating connection", exc)
      false
  }
} 

//设置package包名称以及导入依赖的类
package polyite

import java.util.logging.Logger
import polyite.schedule.DomainCoeffInfo
import polyite.config.ConfigRand
import polyite.schedule.Schedule
import polyite.schedule.ScheduleUtils
import java.util.logging.Level
import polyite.schedule.Dependence
import polyite.config.Config
import polyite.config.MinimalConfig.NumGeneratorsLimit
import polyite.config.MinimalConfig.NumGeneratorsLimit

object MainRandScheds {

  val myLogger : Logger = Logger.getLogger("")

  def main(args : Array[String]) : Unit = {

    def buildRandSchedGen(s : ScopInfo) : ((DomainCoeffInfo, Set[Dependence],
        Int, Set[Schedule], NumGeneratorsLimit, NumGeneratorsLimit, ConfigRand) => Set[Schedule]) = {
      ScheduleUtils.genRandSchedules
    }

    try {
    MainUtil.runRandExpl[ConfigRand](args, ConfigRand.loadAndValidateConfig,
      buildRandSchedGen)
    } catch {
      case t : Throwable => {
        val logger : Logger = Logger.getLogger("")
        logger.log(Level.SEVERE, "Unhandled throwable", t)
      }
    }
  }
} 

//设置package包名称以及导入依赖的类
package polyite

import polyite.evolution.SelectionStrategies
import java.util.logging.Logger
import java.util.logging.Level

object Main {
  def main(args : Array[String]) {
    try {
    MainUtil.runGA(args, SelectionStrategies.takeKBestSchedules)
    } catch {
      case t : Throwable => {
        val logger : Logger = Logger.getLogger("")
        logger.log(Level.SEVERE, "Unhandled throwable", t)
      }
    }
  }
} 

//设置package包名称以及导入依赖的类
package polyite

import java.util.logging.Logger
import polyite.schedule.DomainCoeffInfo
import polyite.config.ConfigRand
import polyite.schedule.Schedule
import polyite.schedule.ScheduleUtils
import polyite.schedule.CoeffSpaceLeTSeEStyle
import polyite.config.ConfigRandLeTSeEStyle
import java.util.logging.Level
import polyite.schedule.Dependence
import polyite.config.MinimalConfig.NumGeneratorsLimit

object MainRandSchedsLeTSeE {

  val myLogger : Logger = Logger.getLogger("")

  def main(args : Array[String]) : Unit = {

    def buildRandSchedGen(s : ScopInfo) : ((DomainCoeffInfo, Set[Dependence], Int, Set[Schedule], NumGeneratorsLimit, NumGeneratorsLimit, ConfigRandLeTSeEStyle) => Set[Schedule]) = {
      return {
        (domInfo : DomainCoeffInfo, deps : Set[Dependence], numScheds : Int, basis : Set[Schedule], maxNumRays : NumGeneratorsLimit, maxNumLines : NumGeneratorsLimit, conf : ConfigRandLeTSeEStyle) =>
          {
            CoeffSpaceLeTSeEStyle.genRandSchedules(s)(domInfo, deps, numScheds, basis, conf) match {
              case None => {
                myLogger.warning("The search space is empty.")
                throw new RuntimeException()
              }
              case Some(scheds) => scheds
            }
          }
      }
    }

    try {
      MainUtil.runRandExpl[ConfigRandLeTSeEStyle](args,
        ConfigRandLeTSeEStyle.loadAndValidateConfig, buildRandSchedGen)
    } catch {
      case t : Throwable => {
        val logger : Logger = Logger.getLogger("")
        logger.log(Level.SEVERE, "Unhandled throwable", t)
      }
    }
  }
} 

//设置package包名称以及导入依赖的类
package dbpedia.dataparsers

import java.util.logging.{Level, Logger}

import dbpedia.config.GeoCoordinateParserConfig
import dbpedia.dataparsers.coordinate.{Latitude, Longitude, SingleGeoCoordinate}
import dbpedia.dataparsers.util.Language
import dbpedia.dataparsers.util.wikiparser.Node

import scala.language.reflectiveCalls
import scala.util.control.ControlThrowable


class SingleGeoCoordinateParser(context : { def language : Language }) extends DataParser
{
    private val logger = Logger.getLogger(classOf[GeoCoordinateParser].getName)
    private val language = context.language.wikiCode
    
    private val lonHemLetterMap = GeoCoordinateParserConfig.longitudeLetterMap.getOrElse(language,GeoCoordinateParserConfig.longitudeLetterMap("en"))
    private val latHemLetterMap = GeoCoordinateParserConfig.latitudeLetterMap.getOrElse(language,GeoCoordinateParserConfig.latitudeLetterMap("en"))
    
	private val lonHemRegex = lonHemLetterMap.keySet.mkString("|")
	private val LongitudeRegex = ("""([0-9]{1,2})/([0-9]{1,2})/([0-9]{0,2}(?:.[0-9]{1,2})?)[/]?[\s]?("""+ lonHemRegex +""")""").r
	
	private val latHemRegex = latHemLetterMap.keySet.mkString("|")
	private val LatitudeRegex = ("""([0-9]{1,2})/([0-9]{1,2})/([0-9]{0,2}(?:.[0-9]{1,2})?)[/]?[\s]?("""+ latHemRegex +""")""").r
	

    override def parse(node : Node) : Option[SingleGeoCoordinate] =
    {
        try
        {
            for( text <- StringParser.parse(node);
                 coordinate <- parseSingleCoordinate(text) )
            {
                return Some(coordinate)
            }
        }
        catch
        {
            case ex : ControlThrowable => throw ex
            case ex : Exception => logger.log(Level.FINE, "Could not extract coordinates", ex)
        }

        None
    }

    
    def parseSingleCoordinate(coordStr : String) : Option[SingleGeoCoordinate] = 
    {
    	coordStr match {
    	  case LatitudeRegex(latDeg, latMin, latSec, latHem) => Some(new Latitude(latDeg.toDouble, latMin.toDouble, ("0"+latSec).toDouble, latHemLetterMap.getOrElse(latHem,"N")))
    	  case LongitudeRegex(lonDeg, lonMin, lonSec, lonHem) => Some(new Longitude(lonDeg.toDouble, lonMin.toDouble, ("0"+lonSec).toDouble, lonHemLetterMap.getOrElse(lonHem,"E")))
    	  case _ => None
    	}
    }
        
} 

//设置package包名称以及导入依赖的类
package models

import java.util.concurrent.{Executors, TimeUnit}
import java.util.logging.{Level, Logger}

//TODO write tests and move to its own file
trait Listener[T]{

  
  @volatile private var lastMessage: Option[T] = None

  private val logger = Logger.getLogger(getClass.getName)

  protected def update(value: T) {
    if(scheduled) {
      lastMessage = Some(value)
    } else {
      val time = System.currentTimeMillis() - lastUpdateTime
      if (time > maxFrequency) {
        onUpdate(value)
        lastUpdateTime = System.currentTimeMillis()
      } else {
        scheduled = true
        lastMessage = Some(value)
        delayedUpdate(maxFrequency)
      }
    }
  }

  protected def onUpdate(value: T)

  private def delayedUpdate(delay: Long) {
    Listener.executor.schedule(new Runnable {
      def run() {
        try {
          scheduled = false
          lastUpdateTime = System.currentTimeMillis()
          onUpdate(lastMessage.get)
        } catch {
          case ex: Exception => logger.log(Level.WARNING, "Error on update", ex)
        }
      }
    }, delay, TimeUnit.MILLISECONDS)
  }
}

object Listener {
  private val executor = Executors.newScheduledThreadPool(1)
} 

//设置package包名称以及导入依赖的类
package models

import de.fuberlin.wiwiss.silk.runtime.task.ValueTask
import java.util.logging.Level
import de.fuberlin.wiwiss.silk.runtime.task.HasStatus
import de.fuberlin.wiwiss.silk.runtime.task.TaskStatus

abstract class TaskStatusListener(task: HasStatus) extends Listener[TaskStatus] {
  task.onUpdate(Listener)

  private object Listener extends (TaskStatus => Unit) {
    def apply(status: TaskStatus) {
      update(status)
    }
  }
}

abstract class TaskDataListener[T](userData: TaskData[T]) extends Listener[T] {
  userData.onUpdate(Listener)

  private object Listener extends (T => Unit) {
    def apply(value: T) {
      update(value)
    }
  }
}


abstract class CurrentTaskStatusListener[TaskType <: HasStatus](taskHolder: TaskData[TaskType]) extends Listener[TaskStatus] with HasStatus {

  //Deactivate logging
  statusLogLevel = Level.FINEST
  progressLogLevel = Level.FINEST

  //Listen to changes of the current task
  taskHolder.onUpdate(Listener)

  //Set current task
  @volatile protected var task = taskHolder()

  //Listen to changes of the status of the current task.
  task.onUpdate(StatusListener)
  updateStatus(task.status)

  private object Listener extends (TaskType => Unit) {
    def apply(newTask: TaskType) {
      task = newTask
      task.onUpdate(StatusListener)
    }
  }

  private object StatusListener extends (TaskStatus => Unit) {
    def apply(status: TaskStatus) {
      update(status)
      updateStatus(status)
    }
  }
}