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XLT (Xceptance LoadTest) is an extensive load and performance test tool developed and maintained by Xceptance.
/*
* Copyright (c) 2005-2023 Xceptance Software Technologies GmbH
*
* 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.xceptance.xlt.mastercontroller;
import java.io.BufferedWriter;
import java.io.File;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicLong;
import org.apache.commons.vfs2.FileObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.xceptance.common.util.zip.ZipUtils;
import com.xceptance.xlt.agentcontroller.AgentController;
import com.xceptance.xlt.agentcontroller.AgentStatus;
import com.xceptance.xlt.agentcontroller.TestResultAmount;
import com.xceptance.xlt.agentcontroller.TestUserStatus;
import com.xceptance.xlt.common.XltConstants;
import com.xceptance.xlt.util.FailedAgentControllerCollection;
import com.xceptance.xlt.util.ProgressBar;
import com.xceptance.xlt.util.XltPropertiesImpl;
public class ResultDownloader
{
private static final Logger LOG = LoggerFactory.getLogger(ResultDownloader.class);
private final ThreadPoolExecutor downloadExecutor;
private final File testResultsDir;
private final File tempDirectory;
private final FailedAgentControllerCollection failedAgentControllers;
private final ProgressBar progress;
private final List agentControllers;
public ResultDownloader(final ThreadPoolExecutor downloadExecutor, final File testResultsDir, final File tempDirectory,
final ArrayList agentControllers, final ProgressBar progress)
{
this.downloadExecutor = downloadExecutor;
this.testResultsDir = testResultsDir;
this.tempDirectory = tempDirectory;
this.progress = progress;
this.agentControllers = agentControllers;
failedAgentControllers = new FailedAgentControllerCollection();
}
/**
* @progresscount 7 ac + 4
*/
public boolean download(final TestResultAmount testResultAmount, final boolean compressedTimerFiles)
{
// download test configuration
final boolean testConfigDownloaded = getRemoteTestConfig();
// update time data
boolean timeDataUpdated = false;
if (testConfigDownloaded)
{
final FileObject testPropFile = MasterController.getTestPropertyFile(testResultsDir);
if (testPropFile != null)
{
timeDataUpdated = updateTimeData(testPropFile);
}
}
// archive results
archiveResults(testResultAmount);
// download and unzip archives
final boolean resultsDownloaded = downloadResults(compressedTimerFiles);
// We have downloaded results from at least 1 agent controller.
// AND
// We have successfully unzipped the test configuration and set up start/end time.
return resultsDownloaded && testConfigDownloaded && timeDataUpdated;
}
/**
* @progresscount 3
*/
private boolean getRemoteTestConfig()
{
// download remote test configuration
final Set tempTestConfigs = downloadTestConfig();
// unzip downloaded configuration and clean up downloaded files
final boolean unzipped = unzipTestConfig(tempTestConfigs);
return unzipped;
}
/**
* @progresscount 1
*/
private Set downloadTestConfig()
{
final Set tempTestConfigs = Collections.synchronizedSet(new HashSet());
final CountDownLatch latch = new CountDownLatch(agentControllers.size());
final AtomicBoolean callFailed = new AtomicBoolean();
for (final AgentController agentController : agentControllers)
{
downloadExecutor.execute(new Runnable()
{
@Override
public void run()
{
// if test config was not downloaded yet
LOG.info(agentController + ": Download test configuration");
try
{
if (tempTestConfigs.isEmpty())
{
tempTestConfigs.add(downloadConfiguration(agentController));
LOG.info(agentController + ": Download test configuration OK");
}
}
catch (final Exception e)
{
failedAgentControllers.add(agentController, e);
LOG.error("Failed downloading test configuration", e);
callFailed.set(true);
}
finally
{
latch.countDown();
}
}
});
}
try
{
latch.await();
}
catch (final InterruptedException e)
{
LOG.error("Waiting for download of test configuration has failed", e);
}
finally
{
if (callFailed.get())
{
removeFailedControllers();
}
}
if (!tempTestConfigs.isEmpty())
{
progress.increaseCount();
}
return tempTestConfigs;
}
private void removeFailedControllers()
{
final Iterator it = agentControllers.iterator();
final Set failed = failedAgentControllers.getAgentControllers();
while (it.hasNext())
{
final AgentController ac = it.next();
if (failed.contains(ac))
{
it.remove();
LOG.debug(ac.getName() + ": Removed from list of used controllers.");
}
}
}
/**
* @progresscount 2
*/
private boolean unzipTestConfig(final Set tempTestConfigs)
{
// unzip
LOG.debug("Unzipping test configuration ...");
boolean unzipped = false;
for (final File tempTestConfigFile : tempTestConfigs)
{
try
{
ZipUtils.unzipFile(tempTestConfigFile, testResultsDir);
LOG.debug("Finished unzipping of test configuration");
unzipped = true;
break;
}
catch (final IOException ioe)
{
}
}
progress.increaseCount();
// clean up downloaded test config files
LOG.debug("Clean up ... ");
for (final File tempTestConfigFile : tempTestConfigs)
{
org.apache.commons.io.FileUtils.deleteQuietly(tempTestConfigFile);
}
progress.increaseCount();
return unzipped;
}
/**
* @progresscount ac
*/
private boolean getTimeData(final AtomicLong startDate, final AtomicLong elapsedTime)
{
LOG.info("Query earliest start date and highest elapsed time");
final CountDownLatch latch = new CountDownLatch(agentControllers.size());
final AtomicBoolean callFailed = new AtomicBoolean();
for (final AgentController agentController : agentControllers)
{
downloadExecutor.execute(new Runnable()
{
@Override
public void run()
{
try
{
long earliestTestUserStartDate = Long.MAX_VALUE;
long highestTestUserElapsedTime = 0L;
final Set agentStatuses = agentController.getAgentStatus();
if (agentStatuses != null)
{
for (final AgentStatus agentStatus : agentStatuses)
{
for (final TestUserStatus testUserStatus : agentStatus.getTestUserStatusList())
{
// start date
{
final long userStartDate = testUserStatus.getStartDate();
if (userStartDate < earliestTestUserStartDate)
{
earliestTestUserStartDate = userStartDate;
}
}
// elapsed time
{
final long userElapsedTime = testUserStatus.getElapsedTime();
if (userElapsedTime > highestTestUserElapsedTime)
{
highestTestUserElapsedTime = userElapsedTime;
}
}
}
}
}
// update global earliest test user start date
synchronized (startDate)
{
if (earliestTestUserStartDate < startDate.get())
{
startDate.set(earliestTestUserStartDate);
}
}
// update highest test user elapsed time
synchronized (elapsedTime)
{
if (highestTestUserElapsedTime > elapsedTime.get())
{
elapsedTime.set(highestTestUserElapsedTime);
}
}
}
catch (final Exception e)
{
failedAgentControllers.add(agentController, e);
callFailed.set(true);
}
finally
{
progress.increaseCount();
latch.countDown();
}
}
});
}
boolean finished = true;
try
{
latch.await();
}
catch (final InterruptedException e)
{
LOG.error("Waiting retrieving time data has failed", e);
finished = false;
}
finally
{
if (callFailed.get())
{
removeFailedControllers();
}
}
return finished;
}
/**
* @progresscount ac
*/
private void archiveResults(final TestResultAmount testResultAmount)
{
LOG.info("Archive results");
final AtomicBoolean callFailed = new AtomicBoolean();
final CountDownLatch latch = new CountDownLatch(agentControllers.size());
for (final AgentController agentController : agentControllers)
{
downloadExecutor.execute(new Runnable()
{
@Override
public void run()
{
try
{
LOG.debug("Archive results at " + agentController);
agentController.archiveAgentResults(testResultAmount);
}
catch (final Exception e)
{
failedAgentControllers.add(agentController, e);
LOG.debug("Archive results FAILED at " + agentController);
callFailed.set(true);
}
finally
{
latch.countDown();
progress.increaseCount();
}
}
});
}
try
{
latch.await();
}
catch (final InterruptedException e)
{
LOG.error("Failure");
}
finally
{
if (callFailed.get())
{
removeFailedControllers();
}
}
}
/**
* @progresscount 5 * ac
*/
private boolean downloadResults(final boolean compressedTimerFiles)
{
LOG.debug("Download results");
try
{
return Poll.poll(downloadExecutor, new Poll.AgentControllerPollingTask()
{
@Override
public boolean call(final AgentController agentController) throws Exception
{
if (agentController.isArchiveAvailable())
{
// download the archive
LOG.debug("Downloading results from " + agentController);
downloadTestResults(agentController, compressedTimerFiles);
LOG.debug("Downloading results from " + agentController + " OK");
return true;
}
return false;
}
}, agentControllers, failedAgentControllers, progress);
}
finally
{
removeFailedControllers();
}
}
/**
* @progresscount ac + 1
*/
private boolean updateTimeData(final FileObject testPropFile)
{
// earliest start date and highest elapsed time of test users over all agent controllers
final AtomicLong startDate = new AtomicLong(Long.MAX_VALUE);
final AtomicLong elapsedTime = new AtomicLong(0);
// get start date and elapsed time
final boolean downloadedTimeData = getTimeData(startDate, elapsedTime);
final long totalRampUpPeriod = getTotalRampUpPeriod();
// update test config
LOG.debug("Set start date and elapsed time to test configuration ...");
boolean timeDataUpdated = false;
try
{
if (downloadedTimeData && testPropFile.exists() && testPropFile.isFile())
{
final long startTime = startDate.get();
final long elapsed = elapsedTime.get();
// don't update test config when no time data available
if (startTime > 0L && startTime < Long.MAX_VALUE)
{
try (var w = new BufferedWriter(new OutputStreamWriter(testPropFile.getContent().getOutputStream(true),
StandardCharsets.ISO_8859_1)))
{
w.newLine();
w.newLine();
w.write("# start date / elapsed time / total ramp-up time (AUTOMATICALLY INSERTED)");
w.newLine();
w.write(XltConstants.LOAD_TEST_START_DATE + " = " + startTime);
w.newLine();
w.write(XltConstants.LOAD_TEST_ELAPSED_TIME + " = " + elapsed);
w.newLine();
w.write(XltConstants.LOAD_TEST_RAMP_UP_PERIOD + " = " + totalRampUpPeriod);
w.newLine();
}
}
timeDataUpdated = true;
}
}
catch (IOException e)
{
LOG.error("Failed adding runtime information to file '" + testPropFile.getPublicURIString() + "'.", e);
}
progress.increaseCount();
return timeDataUpdated;
}
/**
* Returns the total time it takes for all active test scenarios to finish their ramp-up.
*
* @return the total ramp-up time [ms]
*/
private long getTotalRampUpPeriod()
{
// recreate load profile from the config files
final File configDir = new File(testResultsDir, XltConstants.CONFIG_DIR_NAME);
final XltPropertiesImpl properties = TestLoadProfileConfiguration.readProperties(configDir.getParentFile(), configDir);
final TestLoadProfileConfiguration loadProfileConfig = new TestLoadProfileConfiguration(properties);
return loadProfileConfig.getTotalRampUpPeriod() * 1_000L;
}
/**
* Downloads the test results from the specified agent controller to the given directory.
*
* @param testResultsDir
* the target directory
* @param agentController
* the target agent controller
* @throws java.io.IOException
* if an I/O error occurs
* @progresscount 4
*/
private void downloadTestResults(final AgentController agentController, final boolean compressedTimerFiles) throws IOException
{
/** agentID, downloadedZipFile */
final Map downloadedZipFiles = new HashMap();
/*
* download
*/
{
LOG.info("Downloading test results files from " + agentController);
/** agentID : remoteFileName */
final Map remoteZipFileNames = agentController.getAgentResultsArchives();
progress.increaseCount();
final String tempResultsPrefix = "testresults-";
for (final Map.Entry remoteAgentResultFile : remoteZipFileNames.entrySet())
{
final String agentID = remoteAgentResultFile.getKey();
final String remoteZipFileName = remoteAgentResultFile.getValue();
final File zipFile = File.createTempFile(tempResultsPrefix + agentID + "-", ".zip", tempDirectory);
zipFile.deleteOnExit();
agentController.getFileManager().downloadFile(zipFile, remoteZipFileName);
downloadedZipFiles.put(agentID, zipFile);
}
progress.increaseCount();
}
/*
* unzip
*/
{
LOG.debug("Unzipping test results files ...");
for (final Map.Entry downloadedZipFile : downloadedZipFiles.entrySet())
{
final String agentID = downloadedZipFile.getKey();
final File zipFile = downloadedZipFile.getValue();
final File agentResultsDir = new File(testResultsDir, agentID);
LOG.debug("Unzipping '" + zipFile + "' to '" + agentResultsDir + "' ...");
ZipUtils.unzipFile(zipFile, agentResultsDir, compressedTimerFiles);
}
progress.increaseCount();
}
/*
* cleanup
*/
{
LOG.debug("cleanup agent controller test results archive files ...");
agentController.archiveDownloadDone();
LOG.debug("cleanup master controller test results archive files ...");
for (final File zipFile : downloadedZipFiles.values())
{
org.apache.commons.io.FileUtils.deleteQuietly(zipFile);
}
LOG.info("Finished downloading test results files from " + agentController);
progress.increaseCount();
}
}
/**
* Downloads the test configuration from the given agent controller and returns the downloaded file.
*
* @param agentController
* the agent controller
* @return downloaded test configuration archive
* @throws java.io.IOException
* thrown if download/extraction of test configuration has failed
* @progresscount 0
*/
private File downloadConfiguration(final AgentController agentController) throws IOException
{
LOG.debug("Archiving test configuration ...");
final String remoteZipFileName = agentController.archiveTestConfig();
final File tempConfigZip = File.createTempFile("testconfig-", ".zip", tempDirectory);
tempConfigZip.deleteOnExit();
LOG.debug("Downloading test configuration archive ...");
if (remoteZipFileName != null)
{
agentController.getFileManager().downloadFile(tempConfigZip, remoteZipFileName);
}
return tempConfigZip;
}
public FailedAgentControllerCollection getFailedAgentControllerCollection()
{
return failedAgentControllers;
}
}
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