| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you 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.cloud.consoleproxy; |
| |
| import java.io.File; |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.apache.log4j.Logger; |
| |
| /** |
| * |
| * ConsoleProxyGCThread does house-keeping work for the process, it helps cleanup log files, |
| * recycle idle client sessions without front-end activities and report client stats to external |
| * management software |
| */ |
| public class ConsoleProxyGCThread extends Thread { |
| private static final Logger s_logger = Logger.getLogger(ConsoleProxyGCThread.class); |
| |
| private final static int MAX_SESSION_IDLE_SECONDS = 180; |
| |
| private final Map<String, ConsoleProxyClient> connMap; |
| private final Set<String> removedSessionsSet; |
| private long lastLogScan = 0; |
| |
| public ConsoleProxyGCThread(Map<String, ConsoleProxyClient> connMap, Set<String> removedSet) { |
| this.connMap = connMap; |
| this.removedSessionsSet = removedSet; |
| } |
| |
| private void cleanupLogging() { |
| if (lastLogScan != 0 && System.currentTimeMillis() - lastLogScan < 3600000) |
| return; |
| |
| lastLogScan = System.currentTimeMillis(); |
| |
| File logDir = new File("./logs"); |
| File files[] = logDir.listFiles(); |
| if (files != null) { |
| for (File file : files) { |
| if (System.currentTimeMillis() - file.lastModified() >= 86400000L) { |
| try { |
| file.delete(); |
| } catch (Throwable e) { |
| s_logger.info("[ignored]" |
| + "failed to delete file: " + e.getLocalizedMessage()); |
| } |
| } |
| } |
| } |
| } |
| |
| @Override |
| public void run() { |
| |
| boolean bReportLoad = false; |
| long lastReportTick = System.currentTimeMillis(); |
| |
| while (true) { |
| cleanupLogging(); |
| bReportLoad = false; |
| |
| if (s_logger.isDebugEnabled()) { |
| s_logger.debug(String.format("connMap=%s, removedSessions=%s", connMap, removedSessionsSet)); |
| } |
| Set<String> e = connMap.keySet(); |
| Iterator<String> iterator = e.iterator(); |
| while (iterator.hasNext()) { |
| String key; |
| ConsoleProxyClient client; |
| |
| synchronized (connMap) { |
| key = iterator.next(); |
| client = connMap.get(key); |
| } |
| |
| long seconds_unused = (System.currentTimeMillis() - client.getClientLastFrontEndActivityTime()) / 1000; |
| if (seconds_unused < MAX_SESSION_IDLE_SECONDS) { |
| continue; |
| } |
| |
| synchronized (connMap) { |
| connMap.remove(key); |
| bReportLoad = true; |
| } |
| |
| // close the server connection |
| s_logger.info("Dropping " + client + " which has not been used for " + seconds_unused + " seconds"); |
| client.closeClient(); |
| } |
| |
| if (bReportLoad || System.currentTimeMillis() - lastReportTick > 5000) { |
| // report load changes |
| ConsoleProxyClientStatsCollector collector = new ConsoleProxyClientStatsCollector(connMap); |
| collector.setRemovedSessions(new ArrayList<>(removedSessionsSet)); |
| String loadInfo = collector.getStatsReport(); |
| ConsoleProxy.reportLoadInfo(loadInfo); |
| lastReportTick = System.currentTimeMillis(); |
| synchronized (removedSessionsSet) { |
| removedSessionsSet.clear(); |
| } |
| |
| if (s_logger.isDebugEnabled()) { |
| s_logger.debug("Report load change : " + loadInfo); |
| } |
| } |
| |
| try { |
| Thread.sleep(5000); |
| } catch (InterruptedException ex) { |
| s_logger.debug("[ignored] Console proxy was interrupted during GC."); |
| } |
| } |
| } |
| } |