Files
acdl/adapters
Jon Chery c80060878a feat(P56b): author 11 L1 module terraform subdirs + fix adapter output format
EXECUTE stage. Authors the remaining 11 L1 module terraform subdirs with
the full versions/variables/locals/main/outputs split. Defaults previously
hardcoded in the adapter move into locals.tf.

Simple single-resource modules (7):
- kms-key: aws_kms_key + alias (enable_key_rotation, deletion_window defaults)
- ecr: aws_ecr_repository (encryption_configuration from kms_key_arn, image_scanning)
- ecs-cluster: aws_ecs_cluster (name default)
- iam-role: aws_iam_role + inline_policy (assume_role_policy fallback, ECR/logs policy in locals.tf)
- rds: aws_db_instance (storage_encrypted, multi_az, kms_key_arn defaults)
- waf: aws_wafv2_web_acl (default_action, visibility_config, dynamic rules)
- uptime: aws_ecs_task_definition + aws_ecs_service (Fargate compat, container_definitions in locals.tf)

Multi-resource modules with intra-refs (4):
- vpc: aws_vpc + aws_subnet + aws_internet_gateway + aws_route_table (CIDR derivation in locals.tf)
- ecs-service: aws_ecs_task_definition + aws_ecs_service (Fargate compat, container_definitions, network_config in locals.tf)
- alb: aws_lb + aws_lb_target_group + aws_lb_listener (subnet/security_group list derivation in locals.tf)
- cloudfront: aws_cloudfront_distribution + aws_cloudfront_origin_access_control (OAC defaults in locals.tf)

Registry: terraform_dir added to all 11 remaining entries.

Adapter fix: stack output format uses separate 'from' + 'output' fields
(not 'from': 'rid.output'). Fixed _emit_root_output to read both fields.

6 previously-skipped tests unblocked (run_platform.sh --check-only now
resolves static-assets.yml through the new module-assembled adapter).
Removed skip markers. Fixed test assertion (aws_s3_bucket → module).

Regression: 461 passed, 0 skipped, 5 deselected (slow). All 12 modules
pass run_primitive_plan.sh --check-only. All 12 terraform/ subdirs pass
terraform init + validate standalone.

---ci---
project: acdl
phase: P56b
milestone: v1.11
status: execute
---/ci---
2026-07-28 16:07:57 +00:00
..

ACDL Adapters

Overview

Adapters translate the engine-agnostic Target Stack IR to engine-specific formats. The Terraform adapter is the primary adapter (IR → HCL). Policy adapters translate security tool output into normalized PolicyCheckResult records that the confidence signal consumes in an engine-agnostic way.

Existing Adapters

Adapter Path Input Output Purpose
Terraform adapter adapters/terraform/adapter.py Stack instance JSON Terraform HCL (main.tf, terraform.tf, providers.tf) Compiles IR to Terraform
Checkov adapter adapters/terraform/policy/checkov_adapter.py Checkov JSON PolicyCheckResult records Translates Checkov results
Wiz adapter adapters/wiz/wiz_adapter.py Wiz API issues JSON PolicyCheckResult records Translates Wiz security findings
Kyverno adapter adapters/kyverno/kyverno_adapter.py Kyverno PolicyReport JSON PolicyCheckResult records K8s-native policy translation

How to Write an Adapter

Terraform Adapter Extension

  1. Add a stack type → Terraform type mapping to TYPE_MAP.
  2. Add non-identity input mappings to INPUT_MAP.
  3. Add non-identity output mappings to OUTPUT_MAP.
  4. Add a specialized _emit_resource branch if the resource needs nested blocks (e.g. inline policies, rule sets).

Policy Adapter Pattern

  1. Define SEVERITY_MAP and RESULT_MAP dicts that translate the engine's native severity/result vocabulary to the PolicyCheckResult enums.
  2. Implement _to_pcr(raw_record, contract_id)PolicyCheckResult dict.
  3. Implement adapt(input_path, contract_id) → list of PolicyCheckResult dicts.
  4. Implement is_configured() → bool (env var check) so the platform can skip the adapter when credentials are absent.

How to Wire an Adapter

  • Terraform adapter — invoked by scripts/run_platform.sh Step 3 (terraform-plan).
  • Checkov adapter — invoked by scripts/run_platform.sh Step 5 (checkov).
  • Wiz / Kyverno adapters — optional Steps 5b/5c, run only when the relevant env vars are set.
  • All policy adapters output records that are validated against schemas/policy_check_result.schema.json.

Dependencies

  • jsonschema, pyyaml — used by all adapters for loading and validating inputs.
  • boto3 — used by the Wiz adapter for AWS API access.
  • checkov — used by the Checkov adapter to run policy scans.
  • No external deps for the Terraform adapter (pure Python).

How to Test Adapters

  • tests/test_adapter.py — Terraform adapter (TYPE_MAP, resource emission, refs, outputs).
  • tests/test_checkov_adapter.py — Checkov adapter.
  • tests/test_wiz_adapter.py — Wiz adapter.
  • tests/test_kyverno_adapter.py — Kyverno adapter.
  • All adapter tests load fixtures from tests/fixtures/ and use moto for AWS mocking.

Where to Write Tests

  • tests/test_<adapter_name>.py paired with tests/fixtures/<adapter>_fixture.json.

Adding a New Adapter

  1. Create adapters/<name>/<name>_adapter.py.
  2. Implement adapt() and (for policy adapters) is_configured().
  3. Add the adapter's engine name to the engine enum in schemas/policy_check_result.schema.json if it is a policy adapter.
  4. Write a test (tests/test_<name>_adapter.py) plus a fixture (tests/fixtures/<name>_fixture.json).
  5. Add it to scripts/run_platform.sh if it is invoked at runtime.
  6. Update this README.