* Add Mariadb JDBC plugin and provide tests

* Refactor component name

* Reformat plugin description and remove healthcheck span from the test
Co-authored-by: NEfe Kaptan <Efe.Kaptan@webtrekk.com>
Co-authored-by: Nzhang-wei <pknfe@outlook.com>
Co-authored-by: 吴晟 Wu Sheng <wu.sheng@foxmail.com>

* fix to get 'peer' in SingleServerConfig, this method to throw exception in 'org.apache.skywalking.apm.agent.core.context.TracingContext#createExitSpan' because 'peer' is null. in sw 6 version, this also one of  problem to throw  'NoSuchElementException'  in 'org.apache.skywalking.apm.agent.core.context.ContextManager#capture'

* Polishing
Co-authored-by: Ngui.cao <gui.cao@zhangmen.com>
Co-authored-by: Nhanfei <zifeihan@foxmail.com>
Co-authored-by: 吴晟 Wu Sheng <wu.sheng@foxmail.com>

* vertx web plugin re-impl attempt

* added license

* update test for new plugin structure

* got rid of registryItems

* remove unnecessary dependencies

* re-impl eventbus scenario

* more precise naming

* fix expected data

* removed unsupported versions and removed vertx caching (avoids permission error)

* rewrote to remove copied code

* Update plugins-test.3.yaml

* fixes issue of .vertx files remaining on v3.0.0

* only present in v3.0.0

* consistency

* add more supported versions

* track status code

* spelling fix

* track status code

* more correct naming

* reverts 213f5a69 (status code isn't sent at this point)

* made HttpServerResponseImplEndInstrumentation more strict based on version
added status code tracking
fixes issue not finishing async spans

* works 3.0.0,3.7.0

* increase compatibility

* 3.9.0 default

* versioned witness classes (advice from wu-sheng)
Co-authored-by: 吴晟 Wu Sheng <wu.sheng@foxmail.com>
Co-authored-by: Nzhang-wei <pknfe@outlook.com>

* Fix npe in afterMethod/handleMethodException of kafka/finagle plugins

* support v3 extension header
Co-authored-by: NMrproliu <mrproliu@lagou.com>
Co-authored-by: 吴晟 Wu Sheng <wu.sheng@foxmail.com>

Here are the list of changes we made in this pull request. Top 3 are the principle changes, others are following these principles.
1. New agent and mesh report protocol. 
2. New agent header protocol. 
3. Service register, instance register and network address register have been removed permanently.
4. Service traffic, instance traffic and network alias metrics are added to replace the service, instance and network address inventory.
5. Register process has been removed.
6. Metrics stream process supports insert only mode, especially for traffic entities.
7. Metrics stream process supports no-downsampling mode for traffic entities and network alias.
8. Remove all register mechanism and cache in the java agent.
9. Remove MONTH step in GraphQL query.
10. Update UI to remove MONTH step query, the max query range is 60 days now.
11. Simplify the TTL to metrics and record. And the unit has been formatted in Day unit. No specific TTL for ElasticSearch storage.
12. Buffer mechanism of trace receiver and mesh receiver has been removed due to no register.
13. New service id, instance id and endpoint id rules, including service relation, instance relation and endpoint relation id rules.
14. Java agent support `keep tracing` mode, meaning, agent generating tracing context even the backend is unconnected/unavailable.
15. Plugin test tool up to date, in order to support new protocol.
16. Plugin tests expected data files updated.
17. E2E tests updated.
18. Telemetry of Grafana config has been merged into one.
19. Documentation updates.
20. [TBD] InfluxDB storage implementation is not available, need @dmsolr to fix later, in order to reduce the master change block by this PR.

* up ui

* up ui

* fix elasticsearch-5.x-plugin on es6.x TransportClient error, Found class org.elasticsearch.common.transport.TransportAddress, but interface was expected
up elasticsearch-6.x-plugin support TransportClient

* fix elasticsearch-5.x-plugin on es6.x TransportClient error, Found class org.elasticsearch.common.transport.TransportAddress, but interface was expected
up elasticsearch-6.x-plugin support TransportClient

* fix elasticsearch-5.x-plugin on es6.x TransportClient error, Found class org.elasticsearch.common.transport.TransportAddress, but interface was expected
up elasticsearch-6.x-plugin support TransportClient

* const string witnesses
add some unit test
recommended to change ; to ,

* const string witnesses
add some unit test
recommended to change ; to ,

* up ES6.X test-plugin

* up es6.x test-plugin

* up es6.x test-plugin

* up es6.x test-plugin

* add DeleteIndexRequest

* up es6.x test-plugin

* remove TransportCaseController.java

* fix TransportActionNodeProxyExecuteMethodsInterceptorTest
Co-authored-by: Nyi.liang <yi.liang@zhangmen.cn>
Co-authored-by: 吴晟 Wu Sheng <wu.sheng@foxmail.com>
Co-authored-by: N梁懿 <liangyi@xforceplus.com>
Co-authored-by: Naderm <394102339@qq.com>

Co-authored-by: NMrproliu <mrproliu@lagou.com>
Co-authored-by: 吴晟 Wu Sheng <wu.sheng@foxmail.com>
Co-authored-by: Nkezhenxu94 <kezhenxu94@apache.org>

* Provide active HTTP parameter collection automatically in the profiling context

* Fix style check

* fix style error

* Add profile status, storage it into TracingContext. simplify to get profiling method

* Change the profile status field name in TracingContext

* Replace gone images

* resolve issues

* resole description issues
Co-authored-by: NMrproliu <mrproliu@lagou.com>
Co-authored-by: Nkezhenxu94 <kezhenxu94@163.com>

fix KafkaProducer CallbackInterceptor npe
Co-authored-by: Nhuangyongjie <huangyongjie@tigerbrokers>
Co-authored-by: 吴晟 Wu Sheng <wu.sheng@foxmail.com>

* [maven-release-plugin] prepare release v7.0.0

* [maven-release-plugin] prepare for next development iteration

* ClassCastException

* resttemplate 4.x scenario

* add support versions & fix expectedData format-
Co-authored-by: 吴晟 Wu Sheng <wu.sheng@foxmail.com>

fix the error of Struts2 plugin: java.lang.NoSuchMethodError: javax.servlet.http.HttpServletResponse.getStatus() (#4503)
Co-authored-by: 吴晟 Wu Sheng <wu.sheng@foxmail.com>

* Add finagle plugin (#4433)

* fix failed checks for pr(#4441)
* Add licenses for some files
* Update Supported doc
* Add finagle to test component-libraries.yml

* Add finagle automatic tests into CI

* Add comments

* update comments

* Remove CompatibilityChecker

* Move query-protocol submodule to the right version

* Remove `enhancedInstance.setSkyWalkingDynamicField` in `ClientTracingFilterInterceptor`.

* Update expectedData.yaml of finagle tests

* Use lazy ContextCarrier injection.

* Add comments for `ContextCarrierHelper`

* Fix ContextHolderFactory to avoid context pollution
Co-authored-by: Nhuangyongjie <huangyongjie@tigerbrokers>
Co-authored-by: 吴晟 Wu Sheng <wu.sheng@foxmail.com>

* 1.add es agent resthighlevelclient of ClusterClientInstrumentation.2.fix agent test removeOnExit parse error.

* Update configuration.yml

* revert removeOnExit param.
Co-authored-by: NDaming <zteny@foxmail.com>

Motivation:

Support Armeria 0.98.0 in its plugin.

Modifications:

Add an intercept point that is refactored in Armeria 0.98.

Result:

Now Armeria plugin supports 0.98.0, and 0.98.1

* extract duplicated method

* change while loop to if since once rs.next() return false, it will never return true for the following calls

* simplify if() return true; return false pattern

* fix compilation
Signed-off-by: Nliqiang.clq <liqiang.clq@alibaba-inc.com>

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.

[BUG]Fix the bug of port identification failure when connecting Oracle with Sid mode (JDBC: Oracle: thin: @ < host >: < port > / < Sid >) (#4320)

* [BUG]Fix the bug of port identification failure when connecting Oracle with Sid mode (JDBC: Oracle: thin: @ < host >: < port > / < Sid >)
Co-authored-by: 吴晟 Wu Sheng <wu.sheng@foxmail.com>

### 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.

* Enhance gRPC plugin
Co-authored-by: NKanro <higan@live.cn>
Co-authored-by: Nkezhenxu94 <kezhenxu94@163.com>
Co-authored-by: NGuoDuanLZ <739537111@qq.com>
Co-authored-by: 吴晟 Wu Sheng <wu.sheng@foxmail.com>

* Provide Avro plugin
* provide testcase for avro-plugin
Co-authored-by: Nkezhenxu94 <kezhenxu94@163.com>

* Drop support of protocol v1 (sw3)

* Remove versioning logic further

* Remove more version5-only classes

* Commit missing files

* Update submodule and address review comment

* Fix failed tests