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fix(misconf): do not erase variable type for child modules #7941

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@nikpivkin nikpivkin commented Nov 18, 2024

Description

Example config:

module "aws-rds" {
  source         = "terraform-aws-modules/rds/aws"
  version        = "~> 6.10.0"
  identifier     = "mydb"
  engine         = "postgres"
  family         = "postgres13"
  instance_class = "db.t4g.medium"
}

Before:

trivy conf -d . > log1.txt 2>&1
cat log1.txt |grep "Failed to expand"
2024-11-18T20:36:26+06:00       ERROR   [terraform evaluator] Failed to expand block. Invalid "for-each" argument. Must be known and iterable.  block="module.aws-rds.module.db_instance.dynamic.restore_to_point_in_time" value="cty.NilVal"
2024-11-18T20:36:26+06:00       ERROR   [terraform evaluator] Failed to expand block. Invalid "for-each" argument. Must be known and iterable.  block="module.aws-rds.module.db_instance.dynamic.s3_import" value="cty.NilVal"
2024-11-18T20:36:26+06:00       ERROR   [terraform evaluator] Failed to expand block. Invalid "for-each" argument. Must be known and iterable.  block="module.aws-rds.module.db_instance.dynamic.restore_to_point_in_time" value="cty.NilVal"
2024-11-18T20:36:26+06:00       ERROR   [terraform evaluator] Failed to expand block. Invalid "for-each" argument. Must be known and iterable.  block="module.aws-rds.module.db_instance.dynamic.s3_import" value="cty.NilVal"
2024-11-18T20:36:26+06:00       ERROR   [terraform evaluator] Failed to expand block. Invalid "for-each" argument. Must be known and iterable.  block="module.aws-rds.module.db_instance.dynamic.restore_to_point_in_time" value="cty.NilVal"
2024-11-18T20:36:26+06:00       ERROR   [terraform evaluator] Failed to expand block. Invalid "for-each" argument. Must be known and iterable.  block="module.aws-rds.module.db_instance.dynamic.s3_import" value="cty.NilVal"
2024-11-18T20:36:26+06:00       ERROR   [terraform evaluator] Failed to expand block. Invalid "for-each" argument. Must be known and iterable.  block="module.aws-rds.module.db_instance.dynamic.restore_to_point_in_time" value="cty.NilVal"
2024-11-18T20:36:26+06:00       ERROR   [terraform evaluator] Failed to expand block. Invalid "for-each" argument. Must be known and iterable.  block="module.aws-rds.module.db_instance.dynamic.s3_import" value="cty.NilVal"

After:

cat log2.txt |grep "Failed to expand"

Related issues

Checklist

  • I've read the guidelines for contributing to this repository.
  • I've followed the conventions in the PR title.
  • I've added tests that prove my fix is effective or that my feature works.
  • I've updated the documentation with the relevant information (if needed).
  • I've added usage information (if the PR introduces new options)
  • I've included a "before" and "after" example to the description (if the PR is a user interface change).

Signed-off-by: nikpivkin <nikita.pivkin@smartforce.io>
@nikpivkin nikpivkin marked this pull request as ready for review November 20, 2024 10:06
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fix(misconf): do not erase variable type for child modules
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