options

options在线教程

全局开关

名称默认值描述
unsafefalse是否支持对系统级别的类进行增强，打开该开关可能导致把JVM搞挂，请慎重选择！
dumpfalse是否支持被增强了的类dump到外部文件中，如果打开开关，class文件会被dump到/${application working dir}/arthas-class-dump/目录下，具体位置详见控制台输出
batch-re-transformtrue是否支持批量对匹配到的类执行retransform操作
json-formatfalse是否支持json化的输出
disable-sub-classfalse是否禁用子类匹配，默认在匹配目标类的时候会默认匹配到其子类，如果想精确匹配，可以关闭此开关
support-default-methodtrue是否支持匹配到default method，默认会查找interface，匹配里面的default method。参考 #1105
save-resultfalse是否打开执行结果存日志功能，打开之后所有命令的运行结果都将保存到~/logs/arthas-cache/result.log中
job-timeout1d异步后台任务的默认超时时间，超过这个时间，任务自动停止；比如设置 1d, 2h, 3m, 25s，分别代表天、小时、分、秒
print-parent-fieldstrue是否打印在parent class里的filed

查看所有的options

  1. $ options
  2.  LEVEL  TYPE  NAME         VALUE  SUMMARY             DESCRIPTION
  3. --------------------------------------------------------------------------------------------
  4.  0      bool  unsafe       false  Option to support   This option enables to proxy function
  5.         ean                       system-level class  ality of JVM classes. Due to serious
  6.                                                       security risk a JVM crash is possibly
  7.                                                        be introduced. Do not activate it un
  8.                                                       less you are able to manage.
  9.  1      bool  dump         false  Option to dump the  This option enables the enhanced clas
  10.         ean                        enhanced classes   ses to be dumped to external file for
  11.                                                        further de-compilation and analysis.
  12.  1      bool  batch-re-tr  true   Option to support   This options enables to reTransform c
  13.         ean   ansform             batch reTransform   lasses with batch mode.
  14.                                   Class
  15.  2      bool  json-format  false  Option to support   This option enables to format object
  16.         ean                       JSON format of obj  output with JSON when -x option selec
  17.                                   ect output          ted.
  18.  1      bool  disable-sub  false  Option to control   This option disable to include sub cl
  19.         ean   -class              include sub class   ass when matching class.
  20.                                   when class matchin
  21.                                   g
  22.  1      bool  save-result  false  Option to print co  This option enables to save each comm
  23.         ean                       mmand's result to   and's result to log file, which path
  24.                                   log file            is ${user.home}/logs/arthas-cache/res
  25.                                                       ult.log.
  26.  2      Stri  job-timeout  1d     Option to job time  This option setting job timeout,The u
  27.         ng                        out                 nit can be d, h, m, s for day, hour,
  28.                                                       minute, second. 1d is one day in defa
  29.                                                       ult
  30.  1      bool  print-paren  true   Option to print al  This option enables print files in pa
  31.         ean   t-fields            l fileds in parent  rent class, default value true.
  32.                                    class

获取option的值

  1. $ options json-format
  2.  LEVEL  TYPE  NAME         VALUE  SUMMARY             DESCRIPTION
  3. --------------------------------------------------------------------------------------------
  4.  2      bool  json-format  false  Option to support   This option enables to format object
  5.         ean                       JSON format of obj  output with JSON when -x option selec
  6.                                   ect output          ted.

默认情况下json-format为false，如果希望watch/tt等命令结果以json格式输出，则可以设置json-format为true。

设置指定的option

例如，想打开执行结果存日志功能，输入如下命令即可：

  1. $ options save-result true                                                                                         
  2.  NAME         BEFORE-VALUE  AFTER-VALUE                                                                            
  3. ----------------------------------------                                                                           
  4.  save-result  false         true