Motivation:
Review code styles with some bots automatically.
Modifications:
Set up ReviewDog in GitHub Action to review code style.
Add more check rules to checkstyle plugin.
Result:
Obvious code styles can be reviewed and commented automatically.
### Motivation:
Reduce footprint when tagging spans with the deprecated API: `AbstractSpan#tag(String, String)`.
### Modifications:
- Adopt [prototype pattern](https://en.wikipedia.org/wiki/Prototype_pattern) to create `Tag`, prevent from creating too many `StringTag` instances and `GC`ed.
- Replace `AbstractSpan#tag(String, String)` with `AbstractSpan#tag(AbstractTag, String)`.
### Result:
- Footprint is reduced.
* POC: Intercept successfully.
* Refactor codes
* Build the new core
* Setup the new core.
* Push the javassist version to 3.23.2-GA, as it is the last version supports JDK 1.6 compile, according to https://github.com/jboss-javassist/javassist/blob/rel_3_23_2_ga/pom.xml#L149-L160
* Finish the all codes.
* Document updated for bootstrap instrumentation.
* Add a notice to document.
* Remove unexpected file.
* Set javassist version right. Add judge in core interceptors
* Fixe no log bridge implementation
Evan
kezhenxu94
吴晟 Wu Sheng
XiaoFu