CodeBuild project resource does not detect updates to source.auth.resource

[camhux]

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Terraform Version

Terraform v0.11.8
+ provider.aws v1.40.0

Affected Resource(s)

• aws_codebuild_project

Terraform Configuration Files

resource "aws_codebuild_project" "example" {
    name = "example"

    service_role = "${aws_iam_role.example.arn}"

    artifacts {
        type = "NO_ARTIFACTS"
    }

    environment {
        compute_type = "BUILD_GENERAL1_SMALL"
        image = "aws/codebuild/ubuntu-base:14.04"
        type = "LINUX_CONTAINER"
    }

    source {
        type = "GITHUB_ENTERPRISE"
        location = "https://phony.git.com/not-real/dummy.git"

        auth {
            type = "OAUTH"
            resource = "token-1"
        }
    }
}

resource "aws_iam_role" "example" {
    assume_role_policy = <<POLICY
{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Principal": {
        "Service": "codebuild.amazonaws.com"
      },
      "Action": "sts:AssumeRole"
    }
  ]
}
POLICY
}

then update to:

resource "aws_codebuild_project" "example" {
  // ...

  source {
  // ...

    auth {
      type = "OAUTH"
      resource = "token-2"
    }
  }
}

Expected Behavior

• terraform plan should detect the change to aws_codebuild_project.example.source.auth.resource and output it as part of the plan.
• terraform apply should update the value of aws_codebuild_project.example.source.auth.resource from token-1 to token-2.

Actual Behavior

• terraform plan reports that infrastructure is up-to-date.
• terraform apply runs without issue. Inspecting the state subsequently with terraform show reveals token-1 as the known value of the auth resource.

Important Factoids

• The example uses source.type = "GITHUB_ENTERPRISE" to mirror the real-life situation in which I noticed this behavior. I don't know whether this is significant to the observed behavior.

Steps to Reproduce

1. Copy the full config from above into a fresh directory, configure an aws provider, and init + apply.
2. Make the described modification (or any modification to the source.auth.resource attribute).
3. Run terraform plan. Observe no changes detected.

References

• Possibly related: Codebuild artifacts packaging changes is not applied #2050

[github-actions]

Marking this issue as stale due to inactivity. This helps our maintainers find and focus on the active issues. If this issue receives no comments in the next 30 days it will automatically be closed. Maintainers can also remove the stale label.

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[ghost]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.

If you feel this issue should be reopened, we encourage creating a new issue linking back to this one for added context. Thanks!