How do I pass environment variables into sensitive parameters in Parameter Context

I'm aware that I can reference an environment variable using the expression language, e.g. ${MY_ENV}. However sensitive fields don't support expression language. Is there another/better approach?

Solution

You can add an EnvironmentVariableParameterProvider under ControllerSettings. Then you can create a ParameterContext with given environment variables and choose which of them are sensitive varaibles. If they're not listed, you may need to set them first and restart nifi.