AlbumenJ commented on code in PR #13358:
URL: https://github.com/apache/dubbo/pull/13358#discussion_r1393690057
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dubbo-common/src/test/java/org/apache/dubbo/common/utils/JVMUtilTest.java:
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@@ -16,4 +16,190 @@
*/
package org.apache.dubbo.common.utils;
-class JVMUtilTest {}
+import org.apache.dubbo.common.constants.CommonConstants;
+import org.apache.dubbo.common.logger.ErrorTypeAwareLogger;
+import org.apache.dubbo.common.logger.LoggerFactory;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.lang.management.LockInfo;
+import java.lang.management.ManagementFactory;
+import java.lang.management.MonitorInfo;
+import java.lang.management.ThreadInfo;
+import java.lang.management.ThreadMXBean;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import static java.lang.Thread.State.BLOCKED;
+import static java.lang.Thread.State.TIMED_WAITING;
+import static java.lang.Thread.State.WAITING;
+import static
org.apache.dubbo.common.constants.CommonConstants.DUBBO_JSTACK_MAXLINE;
+import static org.apache.dubbo.common.constants.CommonConstants.OS_NAME_KEY;
+import static org.apache.dubbo.common.constants.CommonConstants.OS_WIN_PREFIX;
+import static
org.apache.dubbo.common.constants.LoggerCodeConstants.COMMON_UNEXPECTED_CREATE_DUMP;
+import static org.apache.dubbo.common.utils.JVMUtil.jstack;
+
+class JVMUtilTest {
+
+ protected static final ErrorTypeAwareLogger logger =
LoggerFactory.getErrorTypeAwareLogger(JVMUtilTest.class);
+
+ @Test
+ void testPrintStackTraceWithSpecifiedDepth() {
+ test(10);
+ }
+
+ @Test
+ void testPrintStackTraceWithUnlimitedDepth() {
+ test(-1);
+ }
+
+ private void test(Integer depth) {
+ // read the old property, then set new property
+ String oldProperty = System.getProperty(DUBBO_JSTACK_MAXLINE);
+ System.setProperty(DUBBO_JSTACK_MAXLINE, depth.toString());
+
+ SimpleDateFormat sdf;
+ String os = System.getProperty(OS_NAME_KEY).toLowerCase();
+ // window system don't support ":" in file name
+ if (os.contains(OS_WIN_PREFIX)) {
+ sdf = new SimpleDateFormat("yyyy-MM-dd_HH-mm-ss .SSS");
+ } else {
+ sdf = new SimpleDateFormat("yyyy-MM-dd_HH:mm:ss .SSS");
+ }
+ String filename = String.format("Dubbo_JStack.log.%s", sdf.format(new
Date()));
+
+ try (FileOutputStream jStackStream = new FileOutputStream(new
File("/tmp", filename))) {
+ // output new stack trace
+ jstack(jStackStream);
+ } catch (Exception e) {
+ logger.error(COMMON_UNEXPECTED_CREATE_DUMP, "", "", "dump jStack
error", e);
+ }
+
+ // compare the depth between new trace and old trace
+ try {
+ byte[] encoded =
Files.readAllBytes(Paths.get(String.format("/tmp/%s", filename)));
+ String newOutput = new String(encoded, StandardCharsets.UTF_8);
+ int newStackDepth = calculateStackDepth(newOutput);
Review Comment:
Maybe we can decode the stack file with some tools to verify if it match the
standard output style.
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