Add an agent plugin to support tomcat10.x(#7420)

[yswdqz]

Add an agent plugin to support tomcat10.x

• Add a test case for the new plugin, refer to the doc

• Add a component id in the component-libraries.yml——(Already exists)

• Add a logo in the UI repo——(Already exists)

• If this pull request closes/resolves/fixes an existing issue, replace the issue number. Close Add plugin for Tomcat 10(Jakarta) skywalking#7420.

• Update the CHANGES log.

[yswdqz]

I couldn't find a more suitable way to configure witness class, most of the changes in tomcat10 are about javax to jakarta. So I can only think of a combination of jakarta.servlet.http.HttpServletResponse, org.apache.catalina.core.StandardHostValve to configure witness classes.
If it is OK, I am ready to open CI.

[wu-sheng]

javax and jakarta are good points.

[yswdqz]

I don't know why some checks were not successful. Please give me some advice.

[wu-sheng]

You should add an HTTP client here to call the doPost method. Then we could check whether you handle the context propagation correctly in the plugin.

[yswdqz]

How can I change this? I didn't understand.

[wu-sheng]

You need to change the case to
Tomcat(get) -> A HTTP client call -> Tomcat(post)

Then you would have two segments, with one reference created by post because its peer client gets traced too.

[wu-sheng]

I don't know why some checks were not successful. Please give me some advice.

I think that is just a stable CI's fault. It is not relative to your codes. I just rerun and passed.

[kezhenxu94]

I can confirm the image is with desired tomcat version 10.2.22

[yswdqz]

@kezhenxu94 The approved was dismissed, maybe need a new approve

[wu-sheng]

@kezhenxu94 The approved was dismissed, maybe need a new approve

Don't worry. Every time, you commit a new one, it would dismiss the previous approval.
Once you resolve all comments(change or don't need to change), the maintainer would approve again.
And we can see other reviewers had approved before, like this,

[wuwen5]

There are 2 tabs here, which should be indented with 4 spaces

[yswdqz]

It seems that there are still some problems in my expectedData.yaml. I will fix them tomorrow morning.

[lujiajing1126]

I don't think we need to check this method for Tomcat 10. According to the spec, getStutus is introduced from servlet API 3.0. But the jakarta migration happened from 4.0.2.

I cannot see the possibility that this method is missing here. @kezhenxu94 @yswdqz @wu-sheng

[wu-sheng]

Yes, I think it is safe to remove this.