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* FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
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* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
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package jdk.jfr.tool;
import java.io.FileWriter;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import jdk.jfr.Event;
import jdk.jfr.Name;
import jdk.jfr.Recording;
import jdk.jfr.consumer.RecordedEvent;
import jdk.jfr.consumer.RecordingFile;
import jdk.jfr.internal.Repository;
import jdk.jfr.internal.SecuritySupport.SafePath;
import jdk.test.lib.Asserts;
import jdk.test.lib.process.OutputAnalyzer;
/**
* @ test
* @ summary Test jfr reconstruct
* @ key jfr
* @ requires vm . hasJFR
* @ library / test / lib / test / jdk
* @ modules jdk . jfr / jdk . jfr . internal
* @ run main / othervm jdk . jfr . tool . TestAssemble
*/
public class TestAssemble {
@Name("Correlation" )
static class CorrelationEvent extends Event {
int id;
}
private static int RECORDING_COUNT = 5 ;
@SuppressWarnings("resource" )
public static void main(String[] args) throws Throwable {
// Create some disk recordings
Recording[] recordings = new Recording[5 ];
for (int i = 0 ; i < RECORDING_COUNT; i++) {
Recording r = new Recording();
r.setToDisk(true );
r.start();
CorrelationEvent ce = new CorrelationEvent();
ce.id = i;
ce.commit();
r.stop();
recordings[i] = r;
}
Path dir = Paths.get("reconstruction-parts" );
Files.createDirectories(dir);
long expectedCount = 0 ;
for (int i = 0 ; i < RECORDING_COUNT; i++) {
Path tmp = dir.resolve("chunk-part-" + i + ".jfr" );
recordings[i].dump(tmp);
expectedCount += countEventInRecording(tmp);
}
SafePath repository = Repository.getRepository().getRepositoryPath();
Path destinationPath = Paths.get("reconstructed.jfr" );
String directory = repository.toString();
String destination = destinationPath.toAbsolutePath().toString();
// Test failure
OutputAnalyzer output = ExecuteHelper.jfr("assemble" );
output.shouldContain("too few arguments" );
output = ExecuteHelper.jfr("assemble" , directory);
output.shouldContain("too few arguments" );
output = ExecuteHelper.jfr("assemble" , "not-a-directory" , destination);
output.shouldContain("directory does not exist, not-a-directory" );
output = ExecuteHelper.jfr("assemble" , directory, "not-a-destination" );
output.shouldContain("filename must end with '.jfr'" );
output = ExecuteHelper.jfr("assemble" , "--wrongOption" , directory, destination);
output.shouldContain("too many arguments" );
FileWriter fw = new FileWriter(destination);
fw.write('d' );
fw.close();
output = ExecuteHelper.jfr("assemble" , directory, destination);
output.shouldContain("already exists" );
Files.delete (destinationPath);
// test success
output = ExecuteHelper.jfr("assemble" , directory, destination);
System.out.println(output.getOutput());
output.shouldContain("Finished." );
long reconstructedCount = countEventInRecording(destinationPath);
Asserts.assertEquals(expectedCount, reconstructedCount);
// Cleanup
for (int i = 0 ; i < RECORDING_COUNT; i++) {
recordings[i].close();
}
}
private static long countEventInRecording(Path file) throws IOException {
Integer lastId = -1 ;
try (RecordingFile rf = new RecordingFile(file)) {
long count = 0 ;
while (rf.hasMoreEvents()) {
RecordedEvent re = rf.readEvent();
if (re.getEventType().getName().equals("Correlation" )) {
Integer id = re.getValue("id" );
if (id < lastId) {
Asserts.fail("Expected chunk number to increase" );
}
lastId = id;
}
count++;
}
return count;
}
}
}
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(vorverarbeitet am 2026-06-10)
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