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Heritrix3JobMonitorThread.java
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Heritrix3JobMonitorThread.java
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package dk.netarkivet.harvester.webinterface.servlet;
import java.io.File;
import java.io.FilenameFilter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.TreeMap;
import org.netarchivesuite.heritrix3wrapper.Heritrix3Wrapper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import dk.netarkivet.harvester.datamodel.HarvestChannelDAO;
import dk.netarkivet.harvester.datamodel.JobDAO;
import dk.netarkivet.harvester.datamodel.RunningJobsInfoDAO;
import dk.netarkivet.harvester.harvesting.monitor.HarvestMonitor;
public class Heritrix3JobMonitorThread implements Runnable {
/** The logger for this class. */
private static final Logger LOG = LoggerFactory.getLogger(Heritrix3JobMonitorThread.class);
protected NASEnvironment environment;
protected static HarvestMonitor harvestMonitor;
protected static JobDAO jobDAO;
protected static RunningJobsInfoDAO runningJobsInfoDAO;
protected static HarvestChannelDAO harvestChannelDAO;
static {
harvestMonitor = HarvestMonitor.getInstance();
jobDAO = JobDAO.getInstance();
runningJobsInfoDAO = RunningJobsInfoDAO.getInstance();
harvestChannelDAO = HarvestChannelDAO.getInstance();
}
public Thread thread;
public boolean bExit = false;
public Map<Long, Heritrix3JobMonitor> runningJobMonitorMap = new TreeMap<Long, Heritrix3JobMonitor>();
public Map<Long, Heritrix3JobMonitor> filterJobMonitorMap = new TreeMap<Long, Heritrix3JobMonitor>();
public Set<Heritrix3Wrapper> h3WrapperSet = new HashSet<Heritrix3Wrapper>();
public Set<String> h3HostPortSet = new HashSet<String>();
public List<String> h3HostnamePortEnabledList = new ArrayList<String>();
public List<String> h3HostnamePortDisabledList = new ArrayList<String>();
public Heritrix3JobMonitorThread(NASEnvironment environment) {
this.environment = environment;
}
public synchronized void start() {
if (thread == null || !thread.isAlive()) {
thread = new Thread(this, "Heritrix3 Job Monitor Thread");
thread.start();
}
}
@Override
public void run() {
Map<Long, Heritrix3JobMonitor> tmpJobMonitorMap;
Iterator<Heritrix3JobMonitor> jobmonitorIter;
byte[] tmpBuf = new byte[1024 * 1024];
try {
LOG.info("CrawlLog Thread started.");
//File tmpFolder = new File("/tmp/");
File tmpFolder = environment.tempPath;;
File[] oldFiles = tmpFolder.listFiles(new FilenameFilter() {
@Override
public boolean accept(File dir, String name) {
if (name.startsWith("crawllog-")) {
if (name.endsWith(".log") || name.endsWith(".idx")) {
return true;
}
}
return false;
}
});
Map<String, File> oldFilesMap = new HashMap<String, File>();
File tmpFile;
for (int i=0; i<oldFiles.length; ++i) {
tmpFile = oldFiles[i];
oldFilesMap.put(tmpFile.getName(), tmpFile);
};
List<File> oldFilesList = new ArrayList<File>();
while (!bExit) {
@SuppressWarnings("unchecked")
Set<Long> runningJobs = harvestMonitor.getRunningJobs();
Iterator<Long> jobidIter = runningJobs.iterator();
Heritrix3JobMonitor jobmonitor;
synchronized (runningJobMonitorMap) {
filterJobMonitorMap.clear();
while (jobidIter.hasNext()) {
long jobId = jobidIter.next();
jobmonitor = runningJobMonitorMap.remove(jobId);
if (jobmonitor == null) {
try {
// New H3 job.
jobmonitor = Heritrix3WrapperManager.getJobMonitor(jobId, environment);
} catch (IOException e) {
}
}
filterJobMonitorMap.put(jobId, jobmonitor);
}
tmpJobMonitorMap = filterJobMonitorMap;
filterJobMonitorMap = runningJobMonitorMap;
runningJobMonitorMap = tmpJobMonitorMap;
}
jobmonitorIter = filterJobMonitorMap.values().iterator();
while (jobmonitorIter.hasNext()) {
jobmonitor = jobmonitorIter.next();
jobmonitor.cleanup(oldFilesList);
}
jobmonitorIter = runningJobMonitorMap.values().iterator();
while (jobmonitorIter.hasNext()) {
jobmonitor = jobmonitorIter.next();
if (oldFilesMap != null) {
oldFilesMap.remove(jobmonitor.logFile.getName());
oldFilesMap.remove(jobmonitor.idxFile.getName());
}
if (!jobmonitor.bInitialized) {
jobmonitor.init();
}
checkH3HostnamePort(jobmonitor);
isH3HostnamePortEnabled(jobmonitor);
if (jobmonitor.bPull) {
jobmonitor.updateCrawlLog(tmpBuf);
}
}
if (oldFilesMap != null) {
oldFilesList.addAll(oldFilesMap.values());
oldFilesMap = null;
}
int idx = 0;
while (idx < oldFilesList.size()) {
if (oldFilesList.get(idx).delete()) {
idx++;
} else {
oldFilesList.remove(idx);
}
}
try {
Thread.sleep(60 * 1000);
} catch (InterruptedException e) {
}
}
LOG.info("CrawlLog Thread stopped.");
} catch (Throwable t) {
LOG.error("CrawlLog Thread stopped unexpectedly!.", t);
}
}
public Heritrix3JobMonitor getRunningH3Job(long jobId) {
Heritrix3JobMonitor h3Job;
synchronized (runningJobMonitorMap) {
h3Job = runningJobMonitorMap.get(jobId);
}
return h3Job;
}
public List<Heritrix3JobMonitor> getRunningH3Jobs() {
List<Heritrix3JobMonitor> h3JobsList = new LinkedList<Heritrix3JobMonitor>();
synchronized (runningJobMonitorMap) {
h3JobsList.addAll(runningJobMonitorMap.values());
}
return h3JobsList;
}
public void checkH3HostnamePort(Heritrix3JobMonitor jobmonitor) {
Heritrix3Wrapper h3wrapper = jobmonitor.h3wrapper;
if (jobmonitor.h3HostnamePort == null && h3wrapper != null) {
synchronized (h3HostPortSet) {
jobmonitor.h3HostnamePort = h3wrapper.hostname + ":" + h3wrapper.port;
if (!h3HostPortSet.contains(jobmonitor.h3HostnamePort)) {
h3HostPortSet.add(jobmonitor.h3HostnamePort);
updateH3HostnamePortFilter();
}
}
}
}
public boolean isH3HostnamePortEnabled(Heritrix3JobMonitor jobmonitor) {
synchronized (h3HostnamePortEnabledList) {
// TODO Not ideal to do contains on a list. But its fairly short.
jobmonitor.bPull = h3HostnamePortEnabledList.contains(jobmonitor.h3HostnamePort);
}
return jobmonitor.bPull;
}
public void updateH3HostnamePortFilter() {
String h3HostnamePort;
List<String> enabledList = new LinkedList<String>();
List<String> disabledList = new LinkedList<String>();
synchronized (h3HostPortSet) {
Iterator<String> iter = h3HostPortSet.iterator();
while (iter.hasNext()) {
h3HostnamePort = iter.next();
if (environment.isH3HostnamePortEnabled(h3HostnamePort)) {
enabledList.add(h3HostnamePort);
} else {
disabledList.add(h3HostnamePort);
}
}
}
synchronized (h3HostnamePortEnabledList) {
h3HostnamePortEnabledList.clear();
h3HostnamePortEnabledList.addAll(enabledList);
Collections.sort(h3HostnamePortEnabledList);
}
synchronized (h3HostnamePortDisabledList) {
h3HostnamePortDisabledList.clear();
h3HostnamePortDisabledList.addAll(disabledList);
Collections.sort(h3HostnamePortDisabledList);
}
}
}