You could create this kind of scenario, yes, definitely. My question is, SkyWalking's agent technology is for resolving tracing and metrics collection, which related to RPC related methods mostly, and only very few parameter types or methods. You are keeping changing codes, but not randomly, and if the method is not matching for instrumentation declaration, SkyWalking agent core will automatically ignore it already.
Why still you are facing `invoke error`? If you define instrumentation only by class name and method name, yes, for some internal codes, maybe. But why don't you provide more accurate match rules? Sheng Wu 吴晟 Twitter, wusheng1108 Li BingLong(智能平台) <[email protected]> 于2020年12月28日周一 下午10:36写道： > It is a real case in our inner project "http-server" which is build using > netty. > Usually we add one or more class to add a new future.Then update the > version, Gray released. > > Recently, I resolve the netty conflict using maven shade plugin and update > the version.All version not equal to the target version will using > different instrumentation. > I think this logic is very difficult to express by the witness class. > > On the other hand, If people have to use the Uranus project to find a > witness, It's a little more expensive to resolve the problem. > Think about this: If I have a runtime method invoke error,Why should I use > a witness class to resolve it? > > > 在 2020/12/28 下午8:18，“Sheng Wu”<[email protected]> 写入: > > Hi > > I am not sure whether this is a real case. Is there really existing > case 2 > versions including 100% the same codes? > There is a project created by the community called, uranus, which you > could > find on the website. > https://skywalking.apache.org/docs/ > > This is a tool to help on locating witness class. > > Sheng Wu 吴晟 > Twitter, wusheng1108 > > > Li BingLong(智能平台) <[email protected]> 于2020年12月28日周一 > 下午7:33写道： > > > Sometimes its too difficult to find a witness class. > > Maybe the version 2 has all class in version 1.How can I define a > > instrumentation if I want the version 1 to be instrument? > > In my opinion,we usually want to instrument a specified method. If we > > dont have other ways,some code about a method may be a good “witness > > code”other than witness class. > > > >
