mirror of https://github.com/alibaba/arthas.git
Merge branch 'master' of https://github.com/alibaba/arthas
earayu
6 years ago
commit
a66fe61c3c
@ -0,0 +1,129 @@
|
||||
classloader
|
||||
===========
|
||||
|
||||
Check the inheritance tree, urls and classes loading profiles of the class loaders.
|
||||
|
||||
It can be a great help for `ResourceNotFoundException` when you can use command `classloader`to specify a class loader to `getResources` and print all the urls of the valid resources.
|
||||
|
||||
### Options
|
||||
|
||||
|Name|Specification|
|
||||
|---:|:---|
|
||||
|[l]|count based on the class loader instance|
|
||||
|[t]|print all the inheritance structure of the class loaders|
|
||||
|[a]|list all the classes loaded by all the class loaders (use it with great caution since the output can be huge)|
|
||||
|`[c:]`|get the hashcode of the class loader|
|
||||
|`[c: r:]`|using class loader to search resource|
|
||||
|
||||
### Usage
|
||||
|
||||
* categorised by class loader
|
||||
|
||||
```s
|
||||
$ classloader
|
||||
name numberOfInstances loadedCountTotal
|
||||
com.taobao.pandora.service.loader.ModuleClassLoader 29 11659
|
||||
com.taobao.pandora.boot.loader.ReLaunchURLClassLoader 1 5308
|
||||
BootstrapClassLoader 1 3711
|
||||
com.taobao.arthas.agent.ArthasClassloader 2 2825
|
||||
sun.reflect.DelegatingClassLoader 332 332
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||||
java.net.URLClassLoader 1 285
|
||||
sun.misc.Launcher$AppClassLoader 1 77
|
||||
sun.misc.Launcher$ExtClassLoader 1 46
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||||
com.alibaba.fastjson.util.ASMClassLoader 2 3
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||||
org.jvnet.hk2.internal.DelegatingClassLoader 2 2
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||||
sun.reflect.misc.MethodUtil 1 1
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||||
Affect(row-cnt:11) cost in 66 ms.
|
||||
```
|
||||
|
||||
* Categorized by class loader instance
|
||||
|
||||
```sh
|
||||
$ classloader -l
|
||||
name loadedCount hash parent
|
||||
BootstrapClassLoader 3711 null null
|
||||
com.alibaba.fastjson.util.ASMClassLoader@3bbaa1b8 2 3bbaa1b8 monitor's ModuleClassLoader
|
||||
com.alibaba.fastjson.util.ASMClassLoader@5e255d0b 1 5e255d0b eagleeye-core's ModuleClassLoader
|
||||
com.taobao.arthas.agent.ArthasClassloader@4fa2d7e6 1795 4fa2d7e6 sun.misc.Launcher$ExtClassLoader@a38d7a3
|
||||
com.taobao.arthas.agent.ArthasClassloader@522400c2 1033 522400c2 sun.misc.Launcher$ExtClassLoader@a38d7a3
|
||||
com.taobao.pandora.boot.loader.ReLaunchURLClassLoader@1817d444 5308 1817d444 sun.misc.Launcher$AppClassLoader@14dad5dc
|
||||
tbsession's ModuleClassLoader 285 609cd4d8 null
|
||||
pandora-qos-service's ModuleClassLoader 267 2f8dad04 null
|
||||
pandora-framework's ModuleClassLoader 78 4009e306 null
|
||||
filesync-client's ModuleClassLoader 4 4b8ee4de null
|
||||
rocketmq-client's ModuleClassLoader 431 247bddad null
|
||||
eagleeye-core's ModuleClassLoader 451 1ba9117e null
|
||||
alimonitor-jmonitor's ModuleClassLoader 134 22fcf7ab null
|
||||
metaq-client's ModuleClassLoader 35 41a2befb null
|
||||
hsf-mock's ModuleClassLoader 3 2002fc1d null
|
||||
monitor's ModuleClassLoader 1427 131ef10 null
|
||||
spas-sdk-service's ModuleClassLoader 7 10d307f1 null
|
||||
vipserver-client's ModuleClassLoader 137 7a419da4 null
|
||||
metrics's ModuleClassLoader 146 696da30b null
|
||||
mtop-uncenter's ModuleClassLoader 922 79d8407f null
|
||||
spas-sdk-client's ModuleClassLoader 235 4944252c null
|
||||
live-profiler-pandora's ModuleClassLoader 1 6913c1fb null
|
||||
notify-tr-client's ModuleClassLoader 472 fba92d3 null
|
||||
ons-sdk's ModuleClassLoader 70 23348b5d null
|
||||
tair-plugin's ModuleClassLoader 1053 7c9d8e2 null
|
||||
tddl-client's ModuleClassLoader 2354 4988d8b8 null
|
||||
config-client's ModuleClassLoader 93 429bffaa null
|
||||
diamond-client's ModuleClassLoader 360 3d5c822d null
|
||||
pandolet's ModuleClassLoader 99 41e1e210 null
|
||||
hsf's ModuleClassLoader 1796 3232a28a null
|
||||
acl.plugin's ModuleClassLoader 379 67080771 null
|
||||
buc.sso.client.plugin's ModuleClassLoader 195 13b6aecc null
|
||||
unitrouter's ModuleClassLoader 64 7e5afaa6 null
|
||||
switch's ModuleClassLoader 104 24313fcc null
|
||||
hsf-notify-client's ModuleClassLoader 57 4d0f2471 null
|
||||
java.net.URLClassLoader@7ec7ffd3 285 7ec7ffd3 sun.misc.Launcher$ExtClassLoader@a38d7a3
|
||||
javax.management.remote.rmi.NoCallStackClassLoader@53f65459 1 53f65459 null
|
||||
javax.management.remote.rmi.NoCallStackClassLoader@2833cc44 1 2833cc44 null
|
||||
org.jvnet.hk2.internal.DelegatingClassLoader@72cda8ee 1 72cda8ee monitor's ModuleClassLoader
|
||||
org.jvnet.hk2.internal.DelegatingClassLoader@1f57f96d 1 1f57f96d monitor's ModuleClassLoader
|
||||
sun.misc.Launcher$AppClassLoader@14dad5dc 77 14dad5dc sun.misc.Launcher$ExtClassLoader@a38d7a3
|
||||
sun.misc.Launcher$ExtClassLoader@a38d7a3 46 a38d7a3 null
|
||||
sun.reflect.misc.MethodUtil@1201f221 1 1201f221 sun.misc.Launcher$AppClassLoader@14dad5dc
|
||||
```
|
||||
|
||||
* Check inheritance tree of the class loaders
|
||||
|
||||
```shell
|
||||
$ classloader -t
|
||||
+-BootstrapClassLoader
|
||||
+-unitrouter's ModuleClassLoader
|
||||
+-diamond-client's ModuleClassLoader
|
||||
+-sun.misc.Launcher$ExtClassLoader@548a102f
|
||||
| +-sun.misc.Launcher$AppClassLoader@14dad5dc
|
||||
| +-com.taobao.arthas.agent.AgentLauncher$1@334e6bb8
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||||
| | +-sun.reflect.DelegatingClassLoader@328b3a05
|
||||
| | +-sun.reflect.DelegatingClassLoader@73f44f24
|
||||
```
|
||||
|
||||
* Check the real urls of `URLClassLoader`
|
||||
|
||||
```shell
|
||||
$ classloader -c 5ffe9775
|
||||
file:/Users/hello/soft/taobao-tomcat-7.0.64/deploy/taobao-hsf.sar/lib/commons-lang-2.6.jar
|
||||
file:/Users/hello/soft/taobao-tomcat-7.0.64/deploy/taobao-hsf.sar/lib/log4j-1.2.16.jar
|
||||
file:/Users/hello/soft/taobao-tomcat-7.0.64/deploy/taobao-hsf.sar/lib/logger.api-0.1.4.jar
|
||||
file:/Users/hello/soft/taobao-tomcat-7.0.64/deploy/taobao-hsf.sar/lib/pandora.api-2.0.7-SNAPSHOT.jar
|
||||
file:/Users/hello/soft/taobao-tomcat-7.0.64/deploy/taobao-hsf.sar/lib/pandora.container-2.0.7-SNAPSHOT.jar
|
||||
file:/Users/hello/soft/taobao-tomcat-7.0.64/deploy/taobao-hsf.sar/lib/pandora.thirdcontainer-2.0.7-SNAPSHOT.jar
|
||||
file:/Users/hello/soft/taobao-tomcat-7.0.64/deploy/taobao-hsf.sar/lib/picocontainer-2.14.3.jar
|
||||
```
|
||||
|
||||
* Using class loader to search for resource
|
||||
|
||||
```shell
|
||||
$ classloader -c 226b143b -r META-INF/MANIFEST.MF
|
||||
jar:file:/Users/hello/.m2/repository/javax/enterprise/cdi-api/1.0/cdi-api-1.0.jar!/META-INF/MANIFEST.MF
|
||||
jar:file:/Users/hello/.m2/repository/javax/annotation/jsr250-api/1.0/jsr250-api-1.0.jar!/META-INF/MANIFEST.MF
|
||||
```
|
||||
|
||||
* Using class loader to look for `*.class` file
|
||||
|
||||
```shell
|
||||
$ classloader -c 1b6d3586 -r java/lang/String.class
|
||||
jar:file:/Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/rt.jar!/java/lang/String.class
|
||||
```
|
||||
@ -0,0 +1,40 @@
|
||||
dump
|
||||
===
|
||||
|
||||
Dump the bytecode the loaded classes to a specified directory.
|
||||
|
||||
### Options
|
||||
|
||||
|Name|Specification|
|
||||
|---:|:---|
|
||||
|*class-pattern*|pattern for the class name|
|
||||
|`[c:]`|hashcode of the class loader that loaded the class|
|
||||
|[E]|turn on regx matching while the default is wildcards matching|
|
||||
|
||||
### Usage
|
||||
|
||||
```shell
|
||||
$ dump -E org\.apache\.commons\.lang\.StringUtils
|
||||
HASHCODE CLASSLOADER LOCATION
|
||||
29505d69 +-tddl-client's ModuleClassLoader /Users/zhuyong/middleware/taobao-tomcat/output/build/bin/classdump/com.taobao.pandora
|
||||
.service.loader.ModuleClassLoader-29505d69/org.apache.commons.lang.StringUtils.class
|
||||
6e51ad67 +-java.net.URLClassLoader@6e51ad67 /Users/zhuyong/middleware/taobao-tomcat/output/build/bin/classdump/java.net.URLClassL
|
||||
+-sun.misc.Launcher$AppClassLoader@6951a712 oader-6e51ad67/org.apache.commons.lang.StringUtils.class
|
||||
+-sun.misc.Launcher$ExtClassLoader@6fafc4c2
|
||||
2bdd9114 +-pandora-qos-service's ModuleClassLoader /Users/zhuyong/middleware/taobao-tomcat/output/build/bin/classdump/com.taobao.pandora
|
||||
.service.loader.ModuleClassLoader-2bdd9114/org.apache.commons.lang.StringUtils.class
|
||||
544dc9ba +-com.taobao.tomcat.container.context.loader.AliWebappClassLoader /Users/zhuyong/middleware/taobao-tomcat/output/build/bin/classdump/com.taobao.tomcat.
|
||||
+-org.apache.catalina.loader.StandardClassLoader@2302e984 container.context.loader.AliWebappClassLoader-544dc9ba/org.apache.commons.lang.String
|
||||
+-sun.misc.Launcher$AppClassLoader@6951a712 Utils.class
|
||||
+-sun.misc.Launcher$ExtClassLoader@6fafc4c2
|
||||
22880c2b +-java.net.URLClassLoader@22880c2b /Users/zhuyong/middleware/taobao-tomcat/output/build/bin/classdump/java.net.URLClassL
|
||||
+-sun.misc.Launcher$AppClassLoader@6951a712 oader-22880c2b/org.apache.commons.lang.StringUtils.class
|
||||
+-sun.misc.Launcher$ExtClassLoader@6fafc4c2
|
||||
Affect(row-cnt:5) cost in 156 ms.
|
||||
$ dump -E org\.apache\.commons\.lang\.StringUtils -c 22880c2b
|
||||
HASHCODE CLASSLOADER LOCATION
|
||||
22880c2b +-java.net.URLClassLoader@22880c2b /Users/zhuyong/middleware/taobao-tomcat/output/build/bin/classdump/java.net.URLClassLoader-22880c2b/org
|
||||
+-sun.misc.Launcher$AppClassLoader@6951a712 .apache.commons.lang.StringUtils.class
|
||||
+-sun.misc.Launcher$ExtClassLoader@6fafc4c2
|
||||
Affect(row-cnt:1) cost in 67 ms.
|
||||
```
|
||||
@ -0,0 +1,24 @@
|
||||
getstatic
|
||||
=========
|
||||
|
||||
Check the static fields of classes conveniently as `getstatic class_name field_name`
|
||||
|
||||
Tip: if the *field* is a composite object, you can even use [`OGNL`](https://en.wikipedia.org/wiki/OGNL) to traverse, filter and access the internal properties of it.
|
||||
|
||||
E.g. suppose `n` is a `Map` and the key is a `Enum` then if you want to get the key with a specific `Enum` value - `STOP` or `a`, you can achieve it as:
|
||||
|
||||
```
|
||||
$ getstatic com.alibaba.arthas.Test n 'entrySet().iterator.{? #this.key.name()=="STOP"}'
|
||||
field: n
|
||||
@ArrayList[
|
||||
@Node[STOP=bbb],
|
||||
]
|
||||
Affect(row-cnt:1) cost in 68 ms.
|
||||
|
||||
|
||||
$ getstatic com.alibaba.arthas.Test m 'entrySet().iterator.{? #this.key=="a"}'
|
||||
field: m
|
||||
@ArrayList[
|
||||
@Node[a=aaa],
|
||||
]
|
||||
```
|
||||
@ -0,0 +1,158 @@
|
||||
jad
|
||||
===
|
||||
|
||||
De-compile specified loaded classes.
|
||||
|
||||
`jad` helps to *de-compile* the byte code in JVM to the source code to assist you to better understand the logic behind.
|
||||
|
||||
F.Y.I
|
||||
* the de-compiled code will be grammatically highlighted for readability in Arthas Console;
|
||||
* you have to understand there might be some trivial grammar errors but it won't affect the logic understanding.
|
||||
|
||||
### Options
|
||||
|
||||
|Name|Specification|
|
||||
|---:|:---|
|
||||
|*class-pattern*|pattern for the class name|
|
||||
|`[c:]`|hashcode of the class loader that loaded the class|
|
||||
|[E]|turn on regx matching while the default is wildcards matching|
|
||||
|
||||
### Usage
|
||||
|
||||
When several class loaders loaded the same class:
|
||||
1. `jad` to get the hashcode of the class loader;
|
||||
2. `jad -c <hashcode>` to get the de-compiled class loaded by the class loader.
|
||||
|
||||
```java
|
||||
$ jad org.apache.log4j.Logger
|
||||
|
||||
Found more than one class for: org.apache.log4j.Logger, Please use jad -c hashcode org.apache.log4j.Logger
|
||||
HASHCODE CLASSLOADER
|
||||
69dcaba4 +-monitor's ModuleClassLoader
|
||||
6e51ad67 +-java.net.URLClassLoader@6e51ad67
|
||||
+-sun.misc.Launcher$AppClassLoader@6951a712
|
||||
+-sun.misc.Launcher$ExtClassLoader@6fafc4c2
|
||||
2bdd9114 +-pandora-qos-service's ModuleClassLoader
|
||||
4c0df5f8 +-pandora-framework's ModuleClassLoader
|
||||
|
||||
Affect(row-cnt:0) cost in 38 ms.
|
||||
$ jad org.apache.log4j.Logger -c 69dcaba4
|
||||
|
||||
ClassLoader:
|
||||
+-monitor's ModuleClassLoader
|
||||
|
||||
Location:
|
||||
/Users/zhuyong/Downloads/taobao-hsf.sar/plugins/monitor/lib/log4j-1.2.14.jar
|
||||
|
||||
package org.apache.log4j;
|
||||
|
||||
import org.apache.log4j.spi.*;
|
||||
|
||||
public class Logger extends Category
|
||||
{
|
||||
private static final String FQCN;
|
||||
|
||||
protected Logger(String name)
|
||||
{
|
||||
super(name);
|
||||
}
|
||||
|
||||
public static Logger getLogger(String name)
|
||||
{
|
||||
return LogManager.getLogger(name);
|
||||
}
|
||||
|
||||
public static Logger getLogger(Class clazz)
|
||||
{
|
||||
return LogManager.getLogger(clazz.getName());
|
||||
}
|
||||
|
||||
public static Logger getRootLogger()
|
||||
{
|
||||
return LogManager.getRootLogger();
|
||||
}
|
||||
|
||||
public static Logger getLogger(String name, LoggerFactory factory)
|
||||
{
|
||||
return LogManager.getLogger(name, factory);
|
||||
}
|
||||
|
||||
public void trace(Object message)
|
||||
{
|
||||
if (repository.isDisabled(5000))
|
||||
{
|
||||
return;
|
||||
}
|
||||
if (Level.TRACE.isGreaterOrEqual(getEffectiveLevel()))
|
||||
{
|
||||
forcedLog(Logger.FQCN, Level.TRACE, message, null);
|
||||
}
|
||||
}
|
||||
|
||||
public void trace(Object message, Throwable t)
|
||||
{
|
||||
if (repository.isDisabled(5000))
|
||||
{
|
||||
return;
|
||||
}
|
||||
if (Level.TRACE.isGreaterOrEqual(getEffectiveLevel()))
|
||||
{
|
||||
forcedLog(Logger.FQCN, Level.TRACE, message, t);
|
||||
}
|
||||
}
|
||||
|
||||
public boolean isTraceEnabled()
|
||||
{
|
||||
if (repository.isDisabled(5000))
|
||||
{
|
||||
return false;
|
||||
}
|
||||
return Level.TRACE.isGreaterOrEqual(getEffectiveLevel());
|
||||
}
|
||||
|
||||
static
|
||||
{
|
||||
Logger.FQCN = Logger.class.getName();
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
Affect(row-cnt:1) cost in 190 ms.
|
||||
```
|
||||
|
||||
De-compile the specified method:
|
||||
|
||||
```sh
|
||||
$ jad com.taobao.container.web.arthas.rest.MetricsController directMetrics
|
||||
|
||||
ClassLoader:
|
||||
+-com.taobao.pandora.boot.loader.ReLaunchURLClassLoader@1817d444
|
||||
+-sun.misc.Launcher$AppClassLoader@14dad5dc
|
||||
+-sun.misc.Launcher$ExtClassLoader@a38d7a3
|
||||
|
||||
Location:
|
||||
/Users/zhuyong/middleware/tomcat-web/tomcat-web-web/target/classes/
|
||||
|
||||
private Map<String, Object> directMetrics(String ip, String[] metrics) {
|
||||
JSONObject obj;
|
||||
HashMap<String, Object> result = new HashMap<String, Object>();
|
||||
result.put("success", false);
|
||||
String metricUrl = "http://" + ip + ":8006/metrics/specific";
|
||||
String postBody = Arrays.stream(metrics).map(metric -> "metric=" + metric).collect(Collectors.joining("&"));
|
||||
HttpClientUtils.Response resp = HttpClientUtils.sendPostRequest((String)metricUrl, (String)postBody);
|
||||
if (resp.isSuccess() && (obj = JSON.parseObject(resp.getContent())).containsKey("success") && obj.getBoolean("success").booleanValue() && obj.containsKey("data")) {
|
||||
JSONArray dataArray = obj.getJSONArray("data");
|
||||
HashMap<String, Object> metricMap = new HashMap<String, Object>();
|
||||
for (Object aDataArray : dataArray) {
|
||||
JSONObject o = (JSONObject)aDataArray;
|
||||
metricMap.put(o.getString("metric"), o.get("value"));
|
||||
}
|
||||
result.put("data", metricMap);
|
||||
result.put("success", true);
|
||||
return result;
|
||||
}
|
||||
return result;
|
||||
}
|
||||
|
||||
Affect(row-cnt:1) cost in 1508 ms.
|
||||
```
|
||||
@ -0,0 +1,52 @@
|
||||
monitor
|
||||
=======
|
||||
|
||||
Monitor the `class-pattern` & `method-pattern` matched methods invoking traces.
|
||||
|
||||
F.Y.I
|
||||
|
||||
1. `monitor` is a persistent command, it never returns until `Ctrl+C` to manually stop it.
|
||||
2. the server runs the tasks in the background;
|
||||
3. injected code will become invalid automatically once the tasks being terminated;
|
||||
4. in theory, Arthas commands will not change any original behaviors.
|
||||
|
||||
### Properties monitored
|
||||
|
||||
|Property|Specification|
|
||||
|---:|:---|
|
||||
|timestamp|timestamp|
|
||||
|class|Java class|
|
||||
|method|constructor and regular methods|
|
||||
|total|calling times|
|
||||
|success|success count|
|
||||
|fail|failure count|
|
||||
|rt|average RT|
|
||||
|fail-rate|failure ratio|
|
||||
|
||||
### Parameters
|
||||
|
||||
|Name|Specification|
|
||||
|---:|:---|
|
||||
|*class-pattern*|pattern for the class name|
|
||||
|*method-pattern*|pattern for the method name|
|
||||
|[E]|turn on regx matching while the default is wildcards matching|
|
||||
|`[c:]`|cycle of output with default value: `120 s`|
|
||||
|
||||
### Usage
|
||||
|
||||
```shell
|
||||
$ monitor -c 5 com.alibaba.sample.petstore.web.store.module.screen.ItemList execute
|
||||
Press Ctrl+C to abort.
|
||||
Affect(class-cnt:1 , method-cnt:1) cost in 36 ms.
|
||||
timestamp class method total success fail rt fail-rate
|
||||
-----------------------------------------------------------------------------------------------------------------------------------
|
||||
2015-12-17 10:56:40 com.alibaba.sample.petstore.web.store.module.screen.ItemList execute 10 10 0 2.00 0.00%
|
||||
|
||||
timestamp class method total success fail rt fail-rate
|
||||
-----------------------------------------------------------------------------------------------------------------------------------
|
||||
2015-12-17 10:56:45 com.alibaba.sample.petstore.web.store.module.screen.ItemList execute 11 11 0 2.18 0.00%
|
||||
|
||||
timestamp class method total success fail rt fail-rate
|
||||
-----------------------------------------------------------------------------------------------------------------------------------
|
||||
2015-12-17 10:56:50 com.alibaba.sample.petstore.web.store.module.screen.ItemList execute 0 0 0 0.00 0.00%
|
||||
```
|
||||
@ -0,0 +1,26 @@
|
||||
redefine
|
||||
========
|
||||
|
||||
Load the external `*.class` files and *re-define* the JVM-loaded classes.
|
||||
|
||||
Reference: [Instrumentation#redefineClasses](https://docs.oracle.com/javase/8/docs/api/java/lang/instrument/Instrumentation.html#redefineClasses-java.lang.instrument.ClassDefinition...-)
|
||||
|
||||
F.Y.I
|
||||
|
||||
1. Re-defined classes cannot be restores any more;
|
||||
2. Re-definition can fail (like adding a new field); for more information, please refer to JDK documentation
|
||||
|
||||
### Options
|
||||
|
||||
|Name|Specification|
|
||||
|---:|:---|
|
||||
|[c:]|hashcode of the class loader|
|
||||
|[p:]|absolute path of the external `*.class` (multiple paths supported)|
|
||||
|
||||
|
||||
### Usage
|
||||
|
||||
```
|
||||
redefine -p /tmp/Test.class
|
||||
redefine -c 327a647b -p /tmp/Test.class /tmp/Test\$Inner.class
|
||||
```
|
||||
@ -0,0 +1,68 @@
|
||||
sc
|
||||
==
|
||||
|
||||
Check the profiles of the loaded classes.
|
||||
|
||||
Abbreviated from “Search-Class”; with the help of this command, you can search out all the loaded classes in JVM. Supported options are: `[d]`、`[E]`、`[f]` and `[x:]`.
|
||||
|
||||
Options
|
||||
-------
|
||||
|
||||
### Specification
|
||||
|
||||
|Name|Specification|
|
||||
|---:|:---|
|
||||
|*class-pattern*|pattern for the class name|
|
||||
|*method-pattern*|pattern for the method name|
|
||||
|[d]|print the details of the current class including the source file, class declaration, the class loaders and the like.<br/>F.Y.I if a class is loaded by several class loaders, then the class will be printed several times|
|
||||
|[E]|turn on regx matching while the default is wildcards matching|
|
||||
|[f]|print the fields info of the current class, which should be used along with `-d`|
|
||||
|[x:]|the depth to print the static fields, whose default is `0` - directly invoke the `toString()`|
|
||||
|
||||
Tip:
|
||||
1. *class-patten* supports full qualified class name (e.g. com.taobao.test.AAA and com/taobao/test/AAA)
|
||||
2. `sc` turned on the `sub-class` matching in default mode, if you do want to hide the `sub-class` please just turn it off via `options disable-sub-class true`.
|
||||
|
||||
### Usage
|
||||
|
||||
Check the static fields of a class using `sc -df class-name`
|
||||
|
||||
```shell
|
||||
$ sc -df org.apache.commons.lang.StringUtils
|
||||
|
||||
class-info org.apache.commons.lang.StringUtils
|
||||
code-source /Users/zhuyong/middleware/citrus-sample/petstore/web/target/petstore/WEB-INF/lib/commons-lang-2.4.jar
|
||||
name org.apache.commons.lang.StringUtils
|
||||
isInterface false
|
||||
isAnnotation false
|
||||
isEnum false
|
||||
isAnonymousClass false
|
||||
isArray false
|
||||
isLocalClass false
|
||||
isMemberClass false
|
||||
isPrimitive false
|
||||
isSynthetic false
|
||||
simple-name StringUtils
|
||||
modifier public
|
||||
annotation
|
||||
interfaces
|
||||
super-class +-java.lang.Object
|
||||
class-loader +-com.taobao.tomcat.container.context.loader.AliWebappClassLoader
|
||||
+-org.apache.catalina.loader.StandardClassLoader@1d44eef3
|
||||
+-sun.misc.Launcher$AppClassLoader@57a462c9
|
||||
+-sun.misc.Launcher$ExtClassLoader@6951a712
|
||||
fields modifier final,public,static
|
||||
type java.lang.String
|
||||
name EMPTY
|
||||
value
|
||||
|
||||
modifier final,public,static
|
||||
type int
|
||||
name INDEX_NOT_FOUND
|
||||
value -1
|
||||
|
||||
modifier final,private,static
|
||||
type int
|
||||
name PAD_LIMIT
|
||||
value 8192
|
||||
```
|
||||
@ -0,0 +1,89 @@
|
||||
sm
|
||||
==
|
||||
|
||||
Check the method profile of the loaded classes;
|
||||
|
||||
Abbreviated from “Search-Method”, with which you can search out all methods profiles of the loaded classes.
|
||||
|
||||
F.Y.I
|
||||
`sm` only shows the methods declared in the current class; methods declared in ancestors will not be presented.
|
||||
|
||||
### Options
|
||||
|
||||
|Name|Specification|
|
||||
|---:|:---|
|
||||
|*class-pattern*|pattern for class name|
|
||||
|*method-pattern*|pattern for method name|
|
||||
|[d]|print the details of the method|
|
||||
|[E]|turn the regex matching on while the default mode is wildcards matching|
|
||||
|
||||
### Usage
|
||||
|
||||
```
|
||||
$ sm org.apache.catalina.connector.Connector
|
||||
org.apache.catalina.connector.Connector-><init>
|
||||
org.apache.catalina.connector.Connector->setProperty
|
||||
org.apache.catalina.connector.Connector->getProperty
|
||||
org.apache.catalina.connector.Connector->toString
|
||||
org.apache.catalina.connector.Connector->resume
|
||||
org.apache.catalina.connector.Connector->getScheme
|
||||
org.apache.catalina.connector.Connector->getProtocol
|
||||
org.apache.catalina.connector.Connector->getPort
|
||||
org.apache.catalina.connector.Connector->setService
|
||||
org.apache.catalina.connector.Connector->setPort
|
||||
org.apache.catalina.connector.Connector->getService
|
||||
org.apache.catalina.connector.Connector->getAttribute
|
||||
org.apache.catalina.connector.Connector->setAttribute
|
||||
org.apache.catalina.connector.Connector->getLocalPort
|
||||
org.apache.catalina.connector.Connector->pause
|
||||
org.apache.catalina.connector.Connector->setProtocol
|
||||
org.apache.catalina.connector.Connector->initInternal
|
||||
org.apache.catalina.connector.Connector->setSecure
|
||||
org.apache.catalina.connector.Connector->getSecure
|
||||
org.apache.catalina.connector.Connector->startInternal
|
||||
org.apache.catalina.connector.Connector->stopInternal
|
||||
org.apache.catalina.connector.Connector->setScheme
|
||||
org.apache.catalina.connector.Connector->createRequest
|
||||
org.apache.catalina.connector.Connector->getDomainInternal
|
||||
org.apache.catalina.connector.Connector->getProtocolHandler
|
||||
org.apache.catalina.connector.Connector->setURIEncoding
|
||||
org.apache.catalina.connector.Connector->findSslHostConfigs
|
||||
org.apache.catalina.connector.Connector->destroyInternal
|
||||
org.apache.catalina.connector.Connector->getObjectNameKeyProperties
|
||||
org.apache.catalina.connector.Connector->getAllowTrace
|
||||
org.apache.catalina.connector.Connector->setAllowTrace
|
||||
org.apache.catalina.connector.Connector->getAsyncTimeout
|
||||
org.apache.catalina.connector.Connector->setAsyncTimeout
|
||||
org.apache.catalina.connector.Connector->getEnableLookups
|
||||
org.apache.catalina.connector.Connector->setEnableLookups
|
||||
org.apache.catalina.connector.Connector->getMaxCookieCount
|
||||
...
|
||||
|
||||
```
|
||||
|
||||
```sh
|
||||
$ sm org.apache.catalina.connector.Connector -d
|
||||
declaring-class org.apache.catalina.connector.Connector
|
||||
constructor-name <init>
|
||||
modifier public
|
||||
annotation
|
||||
parameters
|
||||
exceptions
|
||||
|
||||
declaring-class org.apache.catalina.connector.Connector
|
||||
constructor-name <init>
|
||||
modifier public
|
||||
annotation
|
||||
parameters java.lang.String
|
||||
exceptions
|
||||
|
||||
declaring-class org.apache.catalina.connector.Connector
|
||||
method-name setProperty
|
||||
modifier public
|
||||
annotation
|
||||
parameters java.lang.String
|
||||
java.lang.String
|
||||
return boolean
|
||||
exceptions
|
||||
......
|
||||
```
|
||||
@ -0,0 +1,122 @@
|
||||
sysprop
|
||||
=======
|
||||
|
||||
Check the JVM system properties.
|
||||
|
||||
### Usage
|
||||
|
||||
```
|
||||
USAGE:
|
||||
sysprop [-h] [property-name] [property-value]
|
||||
|
||||
SUMMARY:
|
||||
Display, and change all the system properties.
|
||||
|
||||
EXAMPLES:
|
||||
sysprop
|
||||
sysprop file.encoding
|
||||
sysprop production.mode true
|
||||
|
||||
WIKI:
|
||||
https://alibaba.github.io/arthas/sysprop
|
||||
|
||||
OPTIONS:
|
||||
-h, --help this help
|
||||
<property-name> property name
|
||||
<property-value> property value
|
||||
```
|
||||
|
||||
#### Check all properties
|
||||
|
||||
|
||||
```
|
||||
$ sysprop
|
||||
KEY VALUE
|
||||
-------------------------------------------------------------------------------------------------------------------------------------
|
||||
java.runtime.name Java(TM) SE Runtime Environment
|
||||
sun.boot.library.path /Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Contents/Home/jre/lib
|
||||
java.vm.version 25.51-b03
|
||||
user.country.format CN
|
||||
gopherProxySet false
|
||||
java.vm.vendor Oracle Corporation
|
||||
java.vendor.url http://java.oracle.com/
|
||||
path.separator :
|
||||
java.vm.name Java HotSpot(TM) 64-Bit Server VM
|
||||
file.encoding.pkg sun.io
|
||||
user.country US
|
||||
sun.java.launcher SUN_STANDARD
|
||||
sun.os.patch.level unknown
|
||||
java.vm.specification.name Java Virtual Machine Specification
|
||||
user.dir /private/var/tmp
|
||||
java.runtime.version 1.8.0_51-b16
|
||||
java.awt.graphicsenv sun.awt.CGraphicsEnvironment
|
||||
java.endorsed.dirs /Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Contents/Home/jre/lib/endors
|
||||
ed
|
||||
os.arch x86_64
|
||||
java.io.tmpdir /var/folders/2c/tbxwzs4s4sbcvh7frbcc7n000000gn/T/
|
||||
line.separator
|
||||
|
||||
java.vm.specification.vendor Oracle Corporation
|
||||
os.name Mac OS X
|
||||
sun.jnu.encoding UTF-8
|
||||
java.library.path /Users/wangtao/Library/Java/Extensions:/Library/Java/Extensions:/Network/Libra
|
||||
ry/Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java:.
|
||||
sun.nio.ch.bugLevel
|
||||
java.specification.name Java Platform API Specification
|
||||
java.class.version 52.0
|
||||
sun.management.compiler HotSpot 64-Bit Tiered Compilers
|
||||
os.version 10.12.6
|
||||
user.home /Users/wangtao
|
||||
user.timezone Asia/Shanghai
|
||||
java.awt.printerjob sun.lwawt.macosx.CPrinterJob
|
||||
file.encoding UTF-8
|
||||
java.specification.version 1.8
|
||||
user.name wangtao
|
||||
java.class.path .
|
||||
java.vm.specification.version 1.8
|
||||
sun.arch.data.model 64
|
||||
java.home /Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Contents/Home/jre
|
||||
sun.java.command Test
|
||||
java.specification.vendor Oracle Corporation
|
||||
user.language en
|
||||
awt.toolkit sun.lwawt.macosx.LWCToolkit
|
||||
java.vm.info mixed mode
|
||||
java.version 1.8.0_51
|
||||
java.ext.dirs /Users/wangtao/Library/Java/Extensions:/Library/Java/JavaVirtualMachines/jdk1.
|
||||
8.0_51.jdk/Contents/Home/jre/lib/ext:/Library/Java/Extensions:/Network/Library
|
||||
/Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java
|
||||
sun.boot.class.path /Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Contents/Home/jre/lib/resour
|
||||
ces.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Contents/Home/jre/li
|
||||
b/rt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Contents/Home/jre/l
|
||||
ib/sunrsasign.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Contents/H
|
||||
ome/jre/lib/jsse.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Content
|
||||
s/Home/jre/lib/jce.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Conte
|
||||
nts/Home/jre/lib/charsets.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_51.jd
|
||||
k/Contents/Home/jre/lib/jfr.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_51.
|
||||
jdk/Contents/Home/jre/classes
|
||||
java.vendor Oracle Corporation
|
||||
file.separator /
|
||||
java.vendor.url.bug http://bugreport.sun.com/bugreport/
|
||||
sun.cpu.endian little
|
||||
sun.io.unicode.encoding UnicodeBig
|
||||
sun.cpu.isalist
|
||||
```
|
||||
|
||||
#### Check a single property
|
||||
|
||||
Tip: `tab` auto-completion supported
|
||||
|
||||
```
|
||||
$ sysprop java.version
|
||||
java.version=1.8.0_51
|
||||
```
|
||||
|
||||
#### Modify a single property
|
||||
|
||||
```
|
||||
$ sysprop user.country
|
||||
user.country=US
|
||||
$ sysprop user.country CN
|
||||
Successfully changed the system property.
|
||||
user.country=CN
|
||||
```
|
||||
Loading…
Reference in New Issue