Files
hunfabric/adrs/20260210-dataset-base-path.md
Julio Castillo 2eaa0d5e27 Add support for dynamic tags (#3897)
* Allow creation of dynamic tags

* Extend project factory and related modules to support dynamic values

* Extend folder and organization modules

* project and organization readme

* Simplify dynamic tag support and remove unnecessary restrictions

  • Schemas & Validations: Removed the restriction that forbade combining IAM fields with  allowed_values_regex  on tags. Updated validations in  project  and  organization  modules, and
  simplified all relevant JSON schemas.
  • Module Tag Bindings: Simplified the  tag_value  assignment in  folder ,  project ,  gcs ,  bigquery-dataset , and  kms  modules by removing the defensive  can(regex(...))  check and
  calling  templatestring  directly.
  • Outputs: Removed the  tags_dynamic  output from  project  and  organization  modules, as the same information is now available in  tag_keys .
  • Project Factory: Updated  tag_vars_projects  in  projects.tf  to use the native  namespaced_name  attribute and filtered manually for dynamic tags.

* fix(organization, project): fix linting and tests for dynamic tag support

- Align allowed_values_regex and description extraction in _tags_merged
  locals to use lookup() for consistency with other fields.
- Fix spacing in project context variable (alphabetical ordering).
- Update organization tags test to include the new cost_center tag key
  with allowed_values_regex.
- Update project tags test to include the new cost_center tag key and
  reflect the resolved allowed_values_regex on environment.

* refactor(gcs): refine tag bindings and fix context test

- Add _tag_bindings local to pre-resolve context references, enabling
  templatestring to receive a direct map reference (required by Terraform).
- Use var.context.tag_vars instead of the non-existent local.ctx.tag_vars.
- Fix HCL syntax in context.tfvars (escaped inner quotes).
- Update context test inventory to reflect 3 tag bindings including a
  dynamic value resolved via templatestring.

* refactor: align modules with tag binding context pattern

- Add _tag_bindings local + templatestring dance to cloud-run-v2,
  compute-vm, folder, kms modules (bigquery-dataset already had it)
- Exclude tag_vars from local.ctx in cloud-run-v2, compute-vm, folder,
  kms, project modules (bigquery-dataset already had it)
- Add tag_vars to context variable in cloud-run-v2, compute-vm modules
  (others already had it)
- Update all context tests with dynamic tag binding values using
  var.context.tag_vars

* docs: add module-level tftest.yaml test instructions to GEMINI.md

* docs: regenerate READMEs after tag-regex alignment

- Regenerate variable tables in 7 module READMEs to reflect
  line number shifts from prior tag-regex changes
- Add tag_vars exclusion to gcs ctx local
- Fix whitespace alignment in iam-service-account and
  project-factory tag_vars blocks
- Update tftest resource counts for organization and project
- Remove tags_dynamic from organization/project output tables

* fix(project-factory): update test inventory for tag_bindings module split

- Move tag binding address from folder-2 to folder-2-iam in test
  inventory (tag_bindings moved from creation to IAM modules)
- Update module instance count from 34 to 35
- Regenerate README tables after terraform fmt line shifts
- Apply terraform fmt to variables.tf

* refactor(project-factory): remove unnecessary depends_on from folder-iam modules

Folder IAM modules depend on their own folder creation modules, not
on module.projects. The explicit depends_on was leftover from an
earlier design.

* FAST stages

* Address review comments.

- FAST Stages:
  - Added tag_keys to output-files.tf in 0-org-setup to pass org tags via tfvars.
  - Sorted tag_keys and tag_values in output-files.tf.
  - Updated project-factory, networking, and security stages to use tag_keys.
  - Filtered tag_keys for dynamic tags only.
- Modules:
  - Excluded tag_vars from local.ctx in iam-service-account and organization.
  - Simplified tag_value in iam-service-account.
- Tests:
  - Updated test inventories for 0-org-setup and project-factory.

* Fix tf format

* Fix tfdoc

* docs: add ADR for templatestring vars convention and update status of base path ADR

* More tfdoc

* Update schemas

* Use endswith in context loop

* Address review

* Update FAST readmes

* Update last modules

* Terraform fmt

* Revert alloydb

* Fix whitespace

---------

Co-authored-by: Ludovico Magnocavallo <ludo@qix.it>
2026-04-24 20:45:45 +00:00

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3.4 KiB
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# Adopt a base path for datasets
**authors:** [Julio](https://github.com/juliocc) [Ludo](https://github.com/ludoo)
**date:** Feb 10, 2026
## Status
Implemented
## Context
This ADR provides a potential solution to two concurrent issues.
FAST stages still use the old per-factory path approach, which makes it harder to switch datasets.
```hcl
variable "factories_config" {
description = "Configuration for the resource factories or external data."
type = object({
billing_accounts = optional(string, "datasets/classic/billing-accounts")
cicd_workflows = optional(string)
defaults = optional(string, "datasets/classic/defaults.yaml")
folders = optional(string, "datasets/classic/folders")
observability = optional(string, "datasets/classic/observability")
organization = optional(string, "datasets/classic/organization")
project_templates = optional(string, "datasets/classic/templates")
projects = optional(string, "datasets/classic/projects")
})
nullable = false
default = {}
}
```
Project-level factories in the project factory module use relative paths based on the root module in scope, forcing users to embed paths in the YAML files.
```yaml
factories_config:
observability: datasets/classic/observability/iac-0
```
## Proposed Approach
The proposed approach changes the `factories_config` variable in FAST stages so that a new `dataset` attribute is added, and existing lower-level paths are moved to a `paths` attribute.
```hcl
variable "factories_config" {
description = "Configuration for the resource factories or external data."
type = object({
dataset = optional(string, "datasets/classic")
paths = optional(object({
billing_accounts = optional(string, "billing-accounts")
cicd_workflows = optional(string)
defaults = optional(string, "defaults.yaml")
folders = optional(string, "folders")
observability = optional(string, "observability")
organization = optional(string, "organization")
project_templates = optional(string, "templates")
projects = optional(string, "projects")
}), {})
})
nullable = false
default = {}
}
```
This allows one-line configuration of the dataset, while still providing a way to cancel out individual factories by omitting the path, or pointing to a non-existing folder. The base path will not be prepended for paths starting with `/` or `.`, to allow for different absolute or relative paths, and to also allow our testing framweork to inject fixtures.
On the project factory side, the `factories_config` variable will also change by adopting a "base path" and grouping existing attributes under a `paths` variable.
```hcl
variable "factories_config" {
description = "Path to folder with YAML resource description data files."
type = object({
base_path = "data"
paths = optional(object({
folders = optional(string)
project_templates = optional(string)
projects = optional(string)
budgets = optional(object({
billing_account_id = string
data = string
}))
}), {})
})
nullable = false
}
```
The lower level modules will not change interface, but the base path will be prepended by the project factory to in-project `factories_config` paths, to allow decoupling from the dataset and creating portable files.
```yaml
factories_config:
observability: observability/iac-0
```