ujes/engine/src/main/scala/com/webank/wedatasphere/linkis/engine/log/LogHelper.scala

/*
 * Copyright 2019 WeBank
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.webank.wedatasphere.linkis.engine.log

import java.util
import java.util.List

import com.webank.wedatasphere.linkis.engine.conf.EngineConfiguration
import com.webank.wedatasphere.linkis.scheduler.listener.LogListener
import org.slf4j.LoggerFactory

/**
  * created by enjoyyin on 2019/4/26
  * Description:
  */
object LogHelper {

  private val logger = LoggerFactory.getLogger(getClass)
  val logCache = new MountLogCache(EngineConfiguration.ENGINE_LOG_CACHE_NUM.getValue)
  private var logListener:LogListener = _

  def setLogListener(logListener: LogListener):Unit = this.logListener = logListener

  def pushAllRemainLogs():Unit = {
    logger.info(s"start to push all remain logs")
    Thread.sleep(30)
    //logCache.synchronized{
      if (logListener == null){
        logger.warn("logListener is null, can not push remain logs")
        //return
      }else{
        var logs:util.List[String] = null
        logCache.synchronized{
          logs = logCache.getRemain
        }
        if (logs != null && logs.size > 0) {
          val sb: StringBuilder = new StringBuilder
          import scala.collection.JavaConversions._
          logs map (log => log + "\n") foreach sb.append
          logger.info(s"remain logs is ${sb.toString()}")
          logListener.onLogUpdate(null, sb.toString)
        }
      }
    logger.info("end to push all remain logs")
   // }
//    if (sendAppender == null){
//      logger.error("SendAppender has not been initialized")
//    }else{
//      val logCache = sendAppender.getLogCache
//      val logListener = SendAppender.getLogListener
//      logCache.synchronized{
//        val logs: util.List[String] = logCache.getRemain
//        if (logs.size > 0) {
//          val sb: StringBuilder = new StringBuilder
//          import scala.collection.JavaConversions._
//          logs map (log => log + "\n") foreach sb.append
//          logListener.onLogUpdate(null, sb.toString)
//        }
//      }
//    }
  }
}