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improve vmtool search class.

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This commit is contained in:
hengyunabc
2021-05-11 16:53:10 +08:00
parent 3170a92b56
commit fc707109b1
2 changed files with 10 additions and 66 deletions
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core/src/main/java/com/taobao/arthas/core/command/monitor200/VmToolCommand.java
+10 -4
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@@ -48,7 +48,9 @@ import arthas.VmTool;
+ " vmtool --action getInstances --className demo.MathGame\n"
+ " vmtool --action getInstances --className demo.MathGame --express 'instances.length'\n"
+ " vmtool --action getInstances --className demo.MathGame --express 'instances[0]'\n"
+ " vmtool --action getInstances --className demo.MathGame -x 2\n"
+ " vmtool --action getInstances --className java.lang.String --limit 10\n"
+ " vmtool --action getInstances --classLoaderClass org.springframework.boot.loader.LaunchedURLClassLoader --className org.springframework.context.ApplicationContext\n"
+ " vmtool --action forceGc\n"
+ Constants.WIKI + Constants.WIKI_HOME + "vmtool")
//@formatter:on
@@ -62,7 +64,7 @@ public class VmToolCommand extends AnnotatedCommand {
private String hashCode = null;
private String classLoaderClass;
/**
* default value 2
* default value 1
*/
private int expand;
@@ -107,8 +109,8 @@ public class VmToolCommand extends AnnotatedCommand {
}
@Option(shortName = "x", longName = "expand")
@Description("Expand level of object (2 by default)")
@DefaultValue("2")
@Description("Expand level of object (1 by default)")
@DefaultValue("1")
public void setExpand(int expand) {
this.expand = expand;
}
@@ -154,6 +156,10 @@ public class VmToolCommand extends AnnotatedCommand {
Instrumentation inst = process.session().getInstrumentation();
if (VmToolAction.getInstances.equals(action)) {
if (className == null) {
process.end(-1, "The className option cannot be empty!");
return;
}
ClassLoader classLoader = ClassLoader.getSystemClassLoader();
if (hashCode == null && classLoaderClass != null) {
List<ClassLoader> matchedClassLoaders = ClassLoaderUtils.getClassLoaderByClassName(inst,
@@ -177,7 +183,7 @@ public class VmToolCommand extends AnnotatedCommand {
}
List<Class<?>> matchedClasses = new ArrayList<Class<?>>(
SearchUtils.searchClass(inst, className, false, hashCode));
SearchUtils.searchClassOnly(inst, className, false, hashCode));
int matchedClassSize = matchedClasses.size();
if (matchedClassSize == 0) {
process.end(-1, "Can not find class by class name: " + className + ".");