* Update NacosConfigSender.java
* Update NacosDataSourceDemo.java
* fix(Nacos Demo): remoteAddress error

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

- The demo was unable to run and stop because of missing namesrv configuration, and now fixed.

* Add `@Spi` annotation as the general annotation for SPI definition.
* Add isDefault in @Spi, add loadDefaultInstance and improve loadFirstInstanceOrDefault method, improve test cases
* Add SpiLoaderException class for thrown when something goes wrong while loading Provider
* Rearrange packages of base SPI mechanism

NOTE: this PR contains breaking changes regarding API.

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

* Support customized origin parser in Apache Dubbo 2.7.x adapter
* Unify Dubbo callback registry (for fallback and origin parser) into DubboAdapterGlobalConfig
* Polish default fallback implementation (wrap exception with RpcResult rather than directly throw it out)

* Unify Dubbo callback registry (for fallback and origin parser) into DubboAdapterGlobalConfig
* Polish default fallback implementation (wrap exception with RpcResult rather than directly throw it out)

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

Signed-off-by: yunfeiyanggzq <yunfeiyang@buaa.edu.cn>

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

- One config per interceptor instead of the global config
- Polish document and demo

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

Introduce support through a customized client builder `SentinelApacheHttpClientBuilder`.

Signed-off-by: yunfeiyanggzq <yunfeiyang@buaa.edu.cn>

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

* Supplement missing javax.annotation-api to sentinel-cluster-server-envoy-rls and sentinel-demo-zuul2-gateway
* Upgrade mockito-core to 2.28.2 (up to date)

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

* Move the legacy JUL methods from LogBase to BaseJulLogger.
* Add a JavaLoggingAdapter as the general JUL adapter for the Logger SPI, which makes it convenient to use (as the default logger).
* Add LoggerSpiProvider to resolve Logger SPI.
* Polish the logback demo.

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

- also add demo for Zuul 2.x adapter

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

* There are two types of logger for command center and common modules specified by  annotation of `LogTarget`
* Add implementing examples in `sentinel-demo/sentinel-demo-log-logback`
* All implementations should support placeholder '{}'

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

* Improve async support for Dubbo 2.7.2 and above (not compatible with 2.7.0 and 2.7.1 due to the bad compatibility design of Dubbo Filter)

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

- Add sentinel-spring-webmvc-adapter module and demo

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

Bumps [netty-all](https://github.com/netty/netty) from 4.1.31.Final to 4.1.42.Final.

Signed-off-by: dependabot[bot] <support@github.com>

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

- Update the `GatewayParamParser` to support matching the request item.
- Update the internal logic of converting gateway rules to parameter flow rules. The unified mismatched parameters (`SentinelGatewayConstants.GATEWAY_NOT_MATCH_PARAM`) will be configured as an exception item with a large threshold (indicating always pass).
- Add a `GatewayRegexCache` to cache the compiled regex for performance.
- Constant rename: separate URL matching strategy from parameter matching strategy

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

- Add two attributes in DegradeRule: rtSlowRequestAmount and minRequestAmount

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

Signed-off-by: Eric Zhao <sczyh16@gmail.com>