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/*******************************************************************************
* ============LICENSE_START==================================================
* * org.onap.dmaap
* * ===========================================================================
* * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
* * ===========================================================================
* * 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.
* * ============LICENSE_END====================================================
* *
* * ECOMP is a trademark and service mark of AT&T Intellectual Property.
* *
******************************************************************************/
package com.att.research.datarouter.node;
import java.util.*;
import java.util.regex.*;
import java.io.*;
import java.nio.file.*;
import java.text.*;
/**
* Cleanup of old log files.
* <p>
* Periodically scan the log directory for log files that are older than
* the log file retention interval, and delete them. In a future release,
* This class will also be responsible for uploading events logs to the
* log server to support the log query APIs.
*/
public class LogManager extends TimerTask {
private NodeConfigManager config;
private Matcher isnodelog;
private Matcher iseventlog;
private Uploader worker;
private String uploaddir;
private String logdir;
private class Uploader extends Thread implements DeliveryQueueHelper {
public long getInitFailureTimer() { return(10000L); }
public double getFailureBackoff() { return(2.0); }
public long getMaxFailureTimer() { return(150000L); }
public long getExpirationTimer() { return(604800000L); }
public int getFairFileLimit() { return(10000); }
public long getFairTimeLimit() { return(86400000); }
public String getDestURL(DestInfo dest, String fileid) {
return(config.getEventLogUrl());
}
public void handleUnreachable(DestInfo dest) {}
public boolean handleRedirection(DestInfo dest, String location, String fileid) { return(false); }
public boolean isFollowRedirects() { return(false); }
public String getFeedId(String subid) { return(null); }
private DeliveryQueue dq;
public Uploader() {
dq = new DeliveryQueue(this, new DestInfo("LogUpload", uploaddir, null, null, null, config.getMyName(), config.getMyAuth(), false, false));
setDaemon(true);
setName("Log Uploader");
start();
}
private synchronized void snooze() {
try {
wait(10000);
} catch (Exception e) {
}
}
private synchronized void poke() {
notify();
}
public void run() {
while (true) {
scan();
dq.run();
snooze();
}
}
private void scan() {
long threshold = System.currentTimeMillis() - config.getLogRetention();
File dir = new File(logdir);
String[] fns = dir.list();
Arrays.sort(fns);
String lastqueued = "events-000000000000.log";
String curlog = StatusLog.getCurLogFile();
curlog = curlog.substring(curlog.lastIndexOf('/') + 1);
try {
Writer w = new FileWriter(uploaddir + "/.meta");
w.write("POST\tlogdata\nContent-Type\ttext/plain\n");
w.close();
BufferedReader br = new BufferedReader(new FileReader(uploaddir + "/.lastqueued"));
lastqueued = br.readLine();
br.close();
} catch (Exception e) {
}
for (String fn: fns) {
if (!isnodelog.reset(fn).matches()) {
if (!iseventlog.reset(fn).matches()) {
continue;
}
if (lastqueued.compareTo(fn) < 0 && curlog.compareTo(fn) > 0) {
lastqueued = fn;
try {
String pid = config.getPublishId();
Files.createLink(Paths.get(uploaddir + "/" + pid), Paths.get(logdir + "/" + fn));
Files.createLink(Paths.get(uploaddir + "/" + pid + ".M"), Paths.get(uploaddir + "/.meta"));
} catch (Exception e) {
}
}
}
File f = new File(dir, fn);
if (f.lastModified() < threshold) {
f.delete();
}
}
try {
(new File(uploaddir + "/.meta")).delete();
Writer w = new FileWriter(uploaddir + "/.lastqueued");
w.write(lastqueued + "\n");
w.close();
} catch (Exception e) {
}
}
}
/**
* Construct a log manager
* <p>
* The log manager will check for expired log files every 5 minutes
* at 20 seconds after the 5 minute boundary. (Actually, the
* interval is the event log rollover interval, which
* defaults to 5 minutes).
*/
public LogManager(NodeConfigManager config) {
this.config = config;
try {
isnodelog = Pattern.compile("node\\.log\\.\\d{8}").matcher("");
iseventlog = Pattern.compile("events-\\d{12}\\.log").matcher("");
} catch (Exception e) {}
logdir = config.getLogDir();
uploaddir = logdir + "/.spool";
(new File(uploaddir)).mkdirs();
long now = System.currentTimeMillis();
long intvl = StatusLog.parseInterval(config.getEventLogInterval(), 300000);
long when = now - now % intvl + intvl + 20000L;
config.getTimer().scheduleAtFixedRate(this, when - now, intvl);
worker = new Uploader();
}
/**
* Trigger check for expired log files and log files to upload
*/
public void run() {
worker.poke();
}
}
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