feat: implement circuit breaker in enhance plugin, support listen config group, support refresh single config in refresh_context mode.

[shedfreewu]

PR Type

Feature.

Describe what this PR does for and how you did.

feat: implement circuit breaker in enhance plugin, support listen config group, support refresh single config in refresh_context mode.

Adding the issue link (#xxx) if possible.

Note

Checklist

• Add information of this PR to CHANGELOG.md in root of project.
• Add documentation in javadoc or comment below the PR if necessary.

Checklist (Optional)

• Will pull request to branch of 2023.
• Will pull request to branch of 2022.
• Will pull request to branch of 2021.
• Will pull request to branch of 2020.
• Will pull request to branch of hoxton.

[codecov]

Codecov Report

Attention: Patch coverage is 87.15753% with 75 lines in your changes missing coverage. Please review.

Project coverage is 66.91%. Comparing base (9b2d964) to head (29fffad).
Report is 1 commits behind head on 2021.

Files with missing lines	Patch %	Lines
...laris/config/adapter/PolarisConfigFileLocator.java	73.84%	8 Missing and 9 partials ⚠️
...nt/instrument/scg/EnhancedGatewayGlobalFilter.java	74.07%	3 Missing and 4 partials ⚠️
...dapter/PolarisRefreshAffectedContextRefresher.java	58.33%	3 Missing and 2 partials ⚠️
...com/tencent/cloud/plugin/protection/ExitUtils.java	50.00%	4 Missing and 1 partial ⚠️
.../polaris/circuitbreaker/PolarisCircuitBreaker.java	42.85%	4 Missing ⚠️
.../circuitbreaker/reporter/CircuitBreakerPlugin.java	87.50%	0 Missing and 4 partials ⚠️
...config/spring/annotation/SpringValueProcessor.java	92.72%	1 Missing and 3 partials ⚠️
...lient/EnhancedWebClientExchangeFilterFunction.java	80.95%	2 Missing and 2 partials ⚠️
...aker/reporter/ExceptionCircuitBreakerReporter.java	85.71%	1 Missing and 2 partials ⚠️
...gin/lossless/config/LosslessAutoConfiguration.java	84.21%	0 Missing and 3 partials ⚠️
... and 11 more

Additional details and impacted files

@@             Coverage Diff              @@
##               2021    #1490      +/-   ##
============================================
+ Coverage     66.73%   66.91%   +0.17%     
- Complexity       20       22       +2     
============================================
  Files           334      333       -1     
  Lines          7696     7837     +141     
  Branches        944      980      +36     
============================================
+ Hits           5136     5244     +108     
- Misses         2079     2124      +45     
+ Partials        481      469      -12     

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The merge-base changed after approval.