profiler 命令需要增加测试，检查文档里的使用说明 #2961
Description
升级 async-profiler 版本之后，增加了很多选项。导致实际上有的选项可能根本不工作，或者文档的内容不对。
比如 profiler start --loop 1h -f /var/log/profile-%t.jfr 在 4.0.4 版本会失败。
2024-11-26 16:46:54 [arthas-command-execute] ERROR c.t.a.c.s.system.impl.ProcessImpl -Error during processing the command:
com.taobao.middleware.cli.CLIException: Cannot inject value for option 'loop'
at com.taobao.middleware.cli.annotations.CLIConfigurator.inject(CLIConfigurator.java:257)
at com.taobao.arthas.core.shell.command.impl.AnnotatedCommandImpl.process(AnnotatedCommandImpl.java:81)
at com.taobao.arthas.core.shell.command.impl.AnnotatedCommandImpl.access$100(AnnotatedCommandImpl.java:18)
at com.taobao.arthas.core.shell.command.impl.AnnotatedCommandImpl$ProcessHandler.handle(AnnotatedCommandImpl.java:111)
at com.taobao.arthas.core.shell.command.impl.AnnotatedCommandImpl$ProcessHandler.handle(AnnotatedCommandImpl.java:108)
at com.taobao.arthas.core.shell.system.impl.ProcessImpl$CommandProcessTask.run(ProcessImpl.java:385)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.reflect.InvocationTargetException: null
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.taobao.middleware.cli.annotations.CLIConfigurator.inject(CLIConfigurator.java:254)
... 12 common frames omitted
Caused by: java.lang.NullPointerException: null
at com.taobao.arthas.core.command.monitor200.ProfilerCommand.setLoop(ProfilerCommand.java:527)
... 17 common frames omitted
没有考虑 action 可能是 null 。
根本原因是 cli 在注入配置时，获取到的 methods 顺序可能是随机的。
The elements in the returned array are not sorted and are not in any particular order.
public static void inject(CommandLine cli, Object object) throws CLIException {
final List<Method> methods = ReflectionUtils.getSetterMethods(object.getClass());
for (Method method : methods) {
Option option = method.getAnnotation(Option.class);
Argument argument = method.getAnnotation(Argument.class);
if (option != null) {
String name = option.longName();
if (name == null) {
name = option.shortName();
}
try {
Object injected = getOptionValue(method, name, cli);
if (injected != null) {
method.setAccessible(true);
method.invoke(object, injected);
}
} catch (Exception e) {
throw new CLIException("Cannot inject value for option '" + name + "'", e);
}
}