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* version 2 for more details ( a copy is included in the LICENSE file that
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package jdk.jfr.jcmd;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.time.Duration;
import java.time.Instant;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.time.ZoneOffset;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import jdk.jfr.Event;
import jdk.jfr.Recording;
import jdk.test.lib.Asserts;
import jdk.test.lib.process.OutputAnalyzer;
/**
* @ test
* @ summary The test verifies JFR . dump command
* @ key jfr
* @ requires vm . hasJFR
* @ library / test / lib / test / jdk
* @ run main / othervm jdk . jfr . jcmd . TestJcmdDumpLimited
*/
public class TestJcmdDumpLimited {
static class TestEvent extends Event {
int id;
int number;
}
static class TestRecording {
Instant time;
final Recording r;
Path path;
int size;
int total;
int id;
Instant now;
TestRecording(int id, int events) throws IOException, InterruptedException {
r = new Recording();
r.start();
for (int i = 0 ; i < events; i++) {
TestEvent event = new TestEvent();
event.id = id;
event.number = i;
event.commit();
if (i == events / 2 ) {
time = Instant.now();
}
}
r.stop();
Thread .sleep(1 );
path = Paths.get("dump-" + id + ".jfr" );
r.dump(path);
size = (int ) Files.size(path);
this .id = id;
this .now = Instant.now();
}
public void close() {
r.close();
}
}
private static long totalSize;
private static long lastFiveSize;
private static long firstFiveSize;
private static long middleSize;
private static long centerSize;
private static long lastSize;
private static Instant middle;
private static Instant centerLeft;
private static Instant centerRight;
public static void main(String[] args) throws Exception {
List<TestRecording> recs = new ArrayList<>();
for (int i = 0 ; i < 9 ; i++) {
recs.add(new TestRecording(i, 100 ));
}
int last = 0 ;
List<TestRecording> reversed = new ArrayList<>(recs);
Collections.reverse(reversed);
for (TestRecording r : reversed) {
r.total = r.size + last;
last += r.size;
}
for (TestRecording r : recs) {
System.out.println("Recording " + r.id + ": size=" + r.size + " (total=" + r.total + ", time=" + r.now + ")" );
}
centerLeft = recs.get(3 ).time;
middle = recs.get(4 ).time;
centerRight = recs.get(5 ).time;
totalSize = size(recs, 0 , 9 );
lastFiveSize = size(recs, 4 , 5 );
firstFiveSize = size(recs, 0 , 5 );
middleSize = size(recs, 4 , 1 );
centerSize = size(recs, 3 , 3 );
lastSize = size(recs, 8 , 1 );
testDump();
testDumpMaxSize();
testDumpMaxSizeSmall();
testDumpBegin();
testDumpEnd();
testDumpBeginEndInstant();
testDumpBeginEndLocalDateTime();
testDumpBeginEndLocalTime();
testDumpBeginEndSame();
testDumpMaxAge();
testDumpBeginEndRelative();
testDumpTooEarly();
testDumpTooLate();
testDumpBeginMaxAge();
TestDumpEndMaxage();
testDumpEndBegin();
testDumpInvalidTime();
}
private static int size(List<TestRecording> recs, int skip, int limit) {
return recs.stream().skip(skip).limit(limit).mapToInt(r -> r.size).sum();
}
private static void testDumpEndBegin() throws Exception {
Path testEndBegin = Paths.get("testEndBegin.jfr" );
OutputAnalyzer output = JcmdHelper.jcmd("JFR.dump" , "filename=" + testEndBegin.toFile().getAbsolutePath(), "begin=" + Instant.now(), "end=" + Instant.now().minusSeconds(200 ));
output.shouldContain("Dump failed, begin must precede end." );
assertMissingFile(testEndBegin);
}
private static void TestDumpEndMaxage() throws Exception {
Path testEndMaxAge = Paths.get("testEndMaxAge.jfr" );
OutputAnalyzer output = JcmdHelper.jcmd("JFR.dump" , "filename=" + testEndMaxAge.toFile().getAbsolutePath(), "end=" + Instant.now(), "maxage=2h" );
output.shouldContain("Dump failed, maxage can't be combined with begin or end." );
assertMissingFile(testEndMaxAge);
}
private static Path testDumpBeginMaxAge() throws Exception {
Path testBeginMaxAge = Paths.get("testBeginMaxAge.jfr" );
OutputAnalyzer output = JcmdHelper.jcmd("JFR.dump" , "filename=" + testBeginMaxAge.toFile().getAbsolutePath(), "begin=" + Instant.now().minusSeconds(100 ), "maxage=2h" );
output.shouldContain("Dump failed, maxage can't be combined with begin or end." );
assertMissingFile(testBeginMaxAge);
return testBeginMaxAge;
}
private static void testDumpTooLate() throws Exception {
Path missing = Paths.get("missing2.jfr" );
OutputAnalyzer output = JcmdHelper.jcmd("JFR.dump" , "filename=" + missing.toFile().getAbsolutePath(), "begin=" + Instant.now().plus(Duration.ofHours(1 )),
"end=" + Instant.now().plus(Duration.ofHours(2 )));
output.shouldContain("Dump failed. No data found in the specified interval." );
assertMissingFile(missing);
}
private static void testDumpTooEarly() throws Exception {
Path missing = Paths.get("missing.jfr" );
OutputAnalyzer output = JcmdHelper.jcmd("JFR.dump" , "filename=" + missing.toFile().getAbsolutePath(), "end=" + Instant.now().minus(Duration.ofHours(1 )));
output.shouldContain("Dump failed. No data found in the specified interval." );
assertMissingFile(missing);
}
private static void testDumpBeginEndRelative() throws IOException {
Path testBeginEndRelative = Paths.get("testBeginEndRelative.jfr" );
JcmdHelper.jcmd("JFR.dump" , "filename=" + testBeginEndRelative.toFile().getAbsolutePath(), "begin=-3h" , "end=-0s" );
Asserts.assertEquals(totalSize, Files.size(testBeginEndRelative), "Expected dump with begin=-3h end=0s to contain data from all recordings" );
Files.delete (testBeginEndRelative);
}
private static void testDumpMaxAge() throws IOException {
Path testMaxAge = Paths.get("testMaxAge.jfr" );
JcmdHelper.jcmd("JFR.dump" , "filename=" + testMaxAge.toFile().getAbsolutePath(), "maxage=2h" );
Asserts.assertEquals(totalSize, Files.size(testMaxAge), "Expected dump with maxage=2h to contain data from all recordings" );
Files.delete (testMaxAge);
}
private static void testDumpBeginEndSame() throws IOException {
Path testBeginEnd = Paths.get("testBeginEndSame.jfr" );
JcmdHelper.jcmd("JFR.dump" , "filename=" + testBeginEnd.toFile().getAbsolutePath(), "begin=" + middle, "end=" + middle);
Asserts.assertEquals(middleSize, Files.size(testBeginEnd), "Expected dump with begin=" + middle + "end=" + middle + " contain data from middle recording" );
Files.delete (testBeginEnd);
}
private static void testDumpBeginEndInstant() throws IOException {
Path testBeginEnd = Paths.get("testBeginEndInstant.jfr" );
JcmdHelper.jcmd("JFR.dump" , "filename=" + testBeginEnd.toFile().getAbsolutePath(), "begin=" + centerLeft, "end=" + centerRight);
Asserts.assertEquals(centerSize, Files.size(testBeginEnd), "Expected dump with begin=" + centerLeft + " end=" + centerRight + " contain data from the 'center'-recordings" );
Files.delete (testBeginEnd);
}
private static void testDumpBeginEndLocalDateTime() throws IOException {
LocalDateTime centerLeftLocal = LocalDateTime.ofInstant(centerLeft, ZoneOffset.systemDefault());
LocalDateTime centerRightLocal = LocalDateTime.ofInstant(centerRight, ZoneOffset.systemDefault());
Path testBeginEnd = Paths.get("testBeginEndLocalDateTime.jfr" );
JcmdHelper.jcmd("JFR.dump" , "filename=" + testBeginEnd.toFile().getAbsolutePath(), "begin=" + centerLeftLocal, "end=" + centerRightLocal);
Asserts.assertEquals(centerSize, Files.size(testBeginEnd), "Expected dump with begin=" + centerLeftLocal + " end=" + centerRightLocal + " contain data from the 'center'-recordings" );
Files.delete (testBeginEnd);
}
private static void testDumpBeginEndLocalTime() throws IOException {
LocalTime centerLeftLocal = LocalTime.ofInstant(centerLeft, ZoneOffset.systemDefault());
LocalTime centerRightLocal = LocalTime.ofInstant(centerRight, ZoneOffset.systemDefault());
Path testBeginEnd = Paths.get("testBeginEndLocalTime.jfr" );
JcmdHelper.jcmd("JFR.dump" , "filename=" + testBeginEnd.toFile().getAbsolutePath(), "begin=" + centerLeftLocal, "end=" + centerRightLocal);
Asserts.assertEquals(centerSize, Files.size(testBeginEnd), "Expected dump with begin=" + centerLeftLocal + " end=" + centerRightLocal + " contain data from the 'center'-recordings" );
Files.delete (testBeginEnd);
}
private static void testDumpEnd() throws IOException {
Path testEnd = Paths.get("testEnd.jfr" );
JcmdHelper.jcmd("JFR.dump" , "filename=" + testEnd.toFile().getAbsolutePath(), "end=" + middle);
Asserts.assertEquals(firstFiveSize, Files.size(testEnd), "Expected dump with end=" + middle + " to contain data from the five first recordings" );
Files.delete (testEnd);
}
private static void testDumpBegin() throws IOException {
Path testBegin = Paths.get("testBegin.jfr" );
JcmdHelper.jcmd("JFR.dump" , "filename=" + testBegin.toFile().getAbsolutePath(), "begin=" + middle);
Asserts.assertEquals(lastFiveSize, Files.size(testBegin), "Expected dump with begin=" + middle + " to contain data from the last five recordings" );
Files.delete (testBegin);
}
private static void testDumpMaxSize() throws IOException {
Path testMaxSize = Paths.get("testMaxSize.jfr" );
JcmdHelper.jcmd("JFR.dump" , "filename=" + testMaxSize.toFile().getAbsolutePath(), "maxsize=" + lastFiveSize);
Asserts.assertEquals(lastFiveSize, Files.size(testMaxSize), "Expected dump with maxsize=" + lastFiveSize + " to contain data from the last five recordings" );
Files.delete (testMaxSize);
}
private static void testDumpMaxSizeSmall() throws IOException {
Path testMaxSizeSmall = Paths.get("testMaxSizeSmall.jfr" );
JcmdHelper.jcmd("JFR.dump" , "filename=" + testMaxSizeSmall.toFile().getAbsolutePath(), "maxsize=1k" );
Asserts.assertEquals(lastSize, Files.size(testMaxSizeSmall), "Expected dump with maxsize=1k to contain data from the last recording" );
Files.delete (testMaxSizeSmall);
}
private static void testDump() throws IOException {
Path all = Paths.get("all.jfr" );
OutputAnalyzer output = JcmdHelper.jcmd("JFR.dump" , "filename=" + all.toFile().getAbsolutePath());
JcmdAsserts.assertRecordingDumpedToFile(output, all.toFile());
Asserts.assertEquals(totalSize, Files.size(all), "Expected dump to be sum of all recordings" );
Files.delete (all);
}
private static void testDumpInvalidTime() throws Exception {
Path invalidTime = Paths.get("invalidTime.jfr" );
OutputAnalyzer output = JcmdHelper.jcmd("JFR.dump" , "filename=" + invalidTime.toFile().getAbsolutePath(), "begin=4711" );
output.shouldContain("Dump failed, not a valid begin time." );
assertMissingFile(invalidTime);
}
private static void assertMissingFile(Path missing) throws Exception {
if (Files.exists(missing)) {
throw new Exception("Unexpected dumpfile found" );
}
}
}
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