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open-policy-agent

How to check if value is defined in rego?

I want to check if a variable is defined in OPA policy. 

> subject
1 error occurred: 1:1: rego_unsafe_var_error: var subject is unsafe

Is there a function to check if a variable is defined

Solution

  • You can use show command to show active module definition.

    
> show
package repl

b = 45534543

a = 3423

sites = [
    {"name": "prod"},
    {"name": "smoke1"},
    {"name": "dev"},
]

    You will find the list of defined variables here.