feat(bundler): freeze the per-deployer bundle layout - #2475
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Closes scope items 1, 2, 8 and the layout half of 5 of #2113, which completes the issue and the last of the four surfaces ROADMAP section 1 freezes at v1. Integrator automation reads paths out of a bundle: a GitOps pipeline commits argocd/app-of-apps.yaml, an operator runs helm/deploy.sh, a script walks NNN-<component>/values.yaml. None of that was gated. The golden trees under pkg/bundler/deployer/*/testdata cover one deployer's rendering; nothing asserted the shape of a whole bundle, so a renamed root file or a changed directory convention shipped silently. TestBundleLayoutMatchesManifest renders a fixture recipe through all five deployers and compares each tree to a committed manifest. A removed or renamed path fails. An added one does not: a new file breaks nobody, so the manifest may lag until someone runs make bundle-layout-baseline, the same way the OpenAPI baseline may lag on additive change. The fixture matters more than it looks. Some emitted names are recipe-derived rather than layout -- flux writes one helmrepo-<host>.yaml per chart repository and helmfile one level-N.yaml per dependency depth -- so a baseline taken against the live catalog would churn on unrelated recipe edits, and a baseline that churns is one people regenerate without reading. testdata/layout/recipe.yaml is frozen, two components, trimmed to the fields that can influence the tree: 221 lines to 38, with all five trees byte-identical after trimming. TestBundleLayoutCoversEveryDeployer ties the frozen set to the deployer enum in the OpenAPI spec, in both directions. Without it a new deployer would ship an entirely ungated layout while every existing check stayed green -- the gate would look complete and cover less than it claims. No exceptions file here, unlike the other three frozen surfaces. The manifests are 7 to 12 lines, so a removal is a deleted line in a tiny file and glaring in review; the baseline refresh is the acknowledgement. An exceptions file would add machinery for a signal the diff already carries. That is a deliberate divergence, not an oversight. docs/user/bundling.md gains the canonical layout reference (item 8), including the distinction the trees do not show on their own: fixed names are contract, derived names are not, and callers should list the directory rather than hardcode a helmrepo-<host>.yaml. Verified by mutation: a manifest promising a path the bundle no longer emits fails; a bundle emitting a path the manifest lacks passes and logs; dropping a deployer from the frozen set reports it against the API enum. Regeneration is byte-identical. Signed-off-by: Mark Chmarny <mark@chmarny.com>
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Included review availability: Your plan provides up to 12 included reviews per hour; 8 remain after this review. 📝 WalkthroughWalkthroughAdds a frozen bundle recipe and committed file manifests for five deployers. Adds tests that compare generated paths with manifests, verify deployer parity with the OpenAPI enum, and enforce required structure and fixture components. Adds a Make target that regenerates manifests only after all renders succeed. Documents the layout contract and validation gate. Estimated code review effort: 3 (Moderate) | ~25 minutes Merge Risk: ⚪ Minimal · up to This change adds bundle-layout validation and supporting documentation without changing production behavior; no actionable merge-blocking risk remains beyond normal checks and review. Suggested reviewers: 🚥 Pre-merge checks | ✅ 4✅ Passed checks (4 passed)
✨ Finishing Touches📝 Generate docstrings
🧪 Generate unit tests (beta)
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In `@docs/user/bundling.md`:
- Around line 62-65: Update the Helmfile layout description to document its
actual Helmfile-specific tree, including per-component install.sh files and
excluding Helm’s root deploy.sh and recipe.yaml; remove the claim that Helmfile
matches the Helm layout while preserving the existing dependency-depth file
details.
In `@Makefile`:
- Line 376: Update the manifest-generation loop in the Makefile to write every
generated manifest into the temporary directory first, preserving the existing
filenames and content. After the loop completes successfully, replace the
committed manifests from that staged set; add an exit trap that removes the
temporary directory on failure or exit.
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Makefiledocs/contributor/tests.mddocs/user/bundling.mdpkg/bundler/layout_test.gopkg/bundler/testdata/layout/manifests/argocd-helm.txtpkg/bundler/testdata/layout/manifests/argocd.txtpkg/bundler/testdata/layout/manifests/flux.txtpkg/bundler/testdata/layout/manifests/helm.txtpkg/bundler/testdata/layout/manifests/helmfile.txtpkg/bundler/testdata/layout/recipe.yaml
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Two review findings. The layout reference claimed helmfile matches the helm layout. It does not: they share the per-component files, but helmfile writes helmfile.yaml where helm writes deploy.sh, and emits no recipe.yaml. An integrator following that sentence would hardcode two paths helmfile never produces. Replaced with the actual tree. While correcting it, worth being explicit about what the fixture does and does not freeze: level-N.yaml appears only for a recipe with dependencies, and the committed fixture is two dependency-free components, so those files are not in any manifest. The doc now says so rather than implying they are contract. make bundle-layout-baseline wrote each manifest in place as the loop ran, so a failure partway left a mixed old/new set -- worse than no refresh, because the manifests would then disagree with each other and with the bundler. All five are rendered under a temporary directory and copied over the committed files only after every deployer succeeds, with a trap to clean up. Verified by injecting a bogus deployer into the loop: the target exits non-zero and the committed manifests are byte-identical afterward. Signed-off-by: Mark Chmarny <mark@chmarny.com>
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…umeration A shell pipeline exits with the status of its LAST stage, so `find . -type f | sed | sort` reports success even when find fails, and set -e never fires. Reproduced: $ /bin/sh -e -c '(find /nonexistent | sed ... | sort) > out' find: /nonexistent: No such file or directory pipeline exit=0 file size: 0 bytes The target would have committed a truncated manifest, and that fails open in the worst direction. Paths missing from a manifest read as ADDITIONS, which this gate allows by design, so every omitted path silently loses its removal protection -- the gate keeps reporting success while protecting less. pipefail would fix it but is not portable to /bin/sh, since dash lacks it and SHELL is not overridden here. Each stage is now a separate simple command that set -e can catch. Verified by pointing find at a missing directory: the target exits non-zero and the committed manifests are untouched. Generation is only one way a bad manifest arrives; a hand edit or a bad merge is another, and TestBundleLayoutMatchesManifest only rejects a manifest that is entirely empty. TestBundleLayoutManifestsAreComplete asserts a structural floor per deployer -- the root files, the entry point, and a per-component file the fixture always produces. The demonstration is the point: with helm.txt truncated to four lines, the removal check reports zero failures because truncation is invisible to it, while the new guard names the missing paths. Signed-off-by: Mark Chmarny <mark@chmarny.com>
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Inline comments:
In `@pkg/bundler/layout_test.go`:
- Around line 274-286: The requiredPaths fixture must include stable NFD entries
for every applicable layout floor, not only helm. Update the argocd, flux, and
helmfile entries with the corresponding NFD paths: 002-nfd/application.yaml,
nfd/helmrelease.yaml, and 002-nfd/values.yaml, respectively.
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requiredPaths listed a second-component path for helm and forgot the other four deployers, so a manifest that dropped every nfd entry still passed everywhere but helm. Those paths then read as allowed additions and lost removal protection -- the exact fail-open the floor exists to prevent, reintroduced by maintaining the floor by hand. Adding four lines would have fixed today's instance and left the next one available, so the per-component half is now derived: every component the fixture declares must appear somewhere in each manifest. Which file it appears as differs by deployer (application.yaml, helmrelease.yaml, values.yaml), so the match is on the component name rather than a per-deployer filename that would need the same hand-maintenance that just failed. Root entries stay explicit, because they genuinely differ per deployer and are the paths integrator automation invokes. Verified by dropping every nfd entry from all five manifests: five failures, one per deployer. Under the previous version that reported one. Signed-off-by: Mark Chmarny <mark@chmarny.com>
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Inline comments:
In `@pkg/bundler/layout_test.go`:
- Line 331: Update the path check in the layout completeness test to match whole
component boundaries rather than arbitrary substrings, preventing names such as
foo from matching foobar. Add a regression case covering overlapping component
names and verify removal protection still fails when the exact component is
absent.
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strings.Contains let one component stand in for another whose name it contains. With components foo and foobar, dropping every foo path still matched foobar/values.yaml, so the completeness floor reported coverage it did not have -- the same fail-open it was added to close, one level down. Latent with today's fixture, which has no overlapping pair, and it would have arrived silently with the first one. Deriving the floor from the fixture is what makes that a real risk rather than a theoretical one: the set of names being matched is no longer fixed. Comparison is now per path segment, after stripping the NNN- ordering prefix four of the five deployers use and any file extension. That matches 002-nfd/values.yaml, nfd/helmrelease.yaml and templates/nfd.yaml without matching 002-nfd-extras/values.yaml. TestPathMentionsComponent pins the rule with the overlapping cases in both directions. Reverting the helper to strings.Contains fails three of them. Signed-off-by: Mark Chmarny <mark@chmarny.com>
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Summary
Freezes the per-deployer bundle tree. Closes scope items 1, 2, 8 and the layout half of 5 of #2113 — which completes that issue and the last of the four surfaces ROADMAP §1 freezes at v1.
Motivation / Context
Integrator automation reads paths out of a bundle: a GitOps pipeline commits
argocd/app-of-apps.yaml, an operator runshelm/deploy.sh, a script walksNNN-<component>/values.yaml. None of that was gated. The golden trees underpkg/bundler/deployer/*/testdatacover one deployer's rendering; nothing asserted the shape of a whole bundle, so a renamed root file or a changed directory convention would ship silently.Fixes: N/A
Related: #2113, #2370
Type of Change
Component(s) Affected
pkg/bundler)docs/)Implementation Notes
The fixture matters more than it looks
Some emitted names are recipe-derived rather than layout:
fluxwrites onehelmrepo-<host>.yamlper chart repository,helmfileonelevel-N.yamlper dependency depth. A baseline taken against the live catalog would churn on unrelated recipe edits — and a baseline that churns is one people regenerate without reading, which is the failure this gate exists to prevent.testdata/layout/recipe.yamlis frozen, two components, trimmed to the fields that can influence the tree: 221 lines → 38, with all five trees byte-identical after trimming. Determinism verified by generating twice per deployer.Coverage cannot silently shrink
TestBundleLayoutCoversEveryDeployerties the frozen set to theBundleDeployerenum in the OpenAPI spec, in both directions. Without it, adding a deployer would ship an entirely ungated layout while every existing check stayed green — the gate would look complete and cover less than it claims.Additive drift is allowed, deliberately
A removed or renamed path fails. An added one does not — a new file breaks nobody, so the manifest may lag until
make bundle-layout-baseline, the same way the OpenAPI baseline may lag on additive change. Additions are logged so the drift is visible.One deliberate divergence from the other three gates
No exceptions file here. The manifests are 7–12 lines, so a removal is a deleted line in a tiny file and glaring in review; the baseline refresh is the acknowledgement. An exceptions file would add machinery for a signal the diff already carries. Flagging it explicitly so it reads as a decision rather than an oversight — happy to add one if you'd rather have the uniformity.
Testing
Mutation-verified, each restored afterward:
helm no longer emits "deploy.sh.REMOVED"the API accepts deployer "helmfile" but its bundle layout is not frozenmake bundle-layout-baselineis idempotent — regeneration from an unchanged fixture is byte-identical.Risk Assessment
Test, fixtures, a make target and docs. No production code changes.
Note: a separate bug found while building this
Trimming the fixture to two components produced:
There is no cycle —
gpu-operatorhasdependencyRefs: [nfd, cert-manager, ...]and dropping those leaves a dangling edge. The comment atpkg/recipe/metadata.go:1581says the branch surfaces "cycle/missing-dependency", but the message names only the cycle, sending anyone who trims a recipe hunting for a loop that does not exist. Not fixed here — it belongs in its own issue rather than smuggled into a layout PR. Happy to file it.Checklist
make testwith-race)make lint)git commit -S)