reliability

Issue Description

Type: bug report or feature request

抱歉再问下，当前在GrpcServer注册SentinelGrpcServerIntercepter，想

1. 定制拦截器的资源Entry；
2. 动态定制限流的qps；
   这个可以怎么做呢
   看到该Intercepter源码里保护的资源是MethodName

I try to run an experiment with variables configured in "configuration"
"configuration":{ "waitTime": 3 }
There it´s defined as Number
Then I want to use this var in pauses

"pauses":{ "after": "${waitTime}"}

This results into an error that pauses needs a Number
Can it be fixed that variables can be uses also in "pauses" ?

Implement Message.InspectMsg and suitable overrides. This function should be invoked when a message is sent, but only when a debug flag is enabled in a lab load. Its purpose is to verify that the message

• belongs to a valid protocol
• matches its PSM's protocol (if sent by a PSM)
• has a valid signal for its protocol
• contains all parameters that are mandatory for its signal
• contains

Although it's not a high priority, we could get a more fancy and modern wheel.