nicholasjackson/opa-rego-language
Rego is the declarative policy language used by Open Policy Agent (OPA). This tile covers writing and testing Rego policies for Kubernetes admission control, Terraform and infrastructure-as-code plan validation, Docker container authorization, HTTP API authorization, RBAC and role-based access control, data filtering, metadata annotations with opa inspect, and OPA policy testing with opa test.
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1.19xAverage score across 31 eval scenarios
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The risk profile of this skill
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Terraform: Module Security Group Validation
We use OPA to validate Terraform plans before they are applied. Write a Rego policy that checks security group descriptions across all modules in a plan — including child modules — to ensure no security group description contains the string "HTTP".
The plan structure to traverse is input.planned_values, not resource_changes. Resources can exist in the root module (planned_values.root_module.resources) or in child modules (planned_values.root_module.child_modules[*].resources).
Use the walk built-in to traverse the entire planned_values tree rather than accessing root and child modules separately.
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