feat(sdk): derive CollectSnapshot AgentConfig from spec.snapshot - #2538
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Sixteen spec.snapshot settings now reach the agent Job through the facade, closing the third of the three sections #2245 scoped. AgentConfig's fields are exported, so this returns a populated struct rather than an options slice -- a caller overrides any field directly. Three mappings are transforms, and two fail silently if reimplemented by hand: - noCleanup is INVERTED against Cleanup, the same shape spec.validate has. Third section running, so it is pinned both ways again. - privileged DEFAULTS TO TRUE when config says nothing. The resolved field is a pointer so unset stays distinct from an explicit false, and the CLI applies derefBoolOr(resolved.Privileged, true). The naive `ptr != nil && *ptr` drops privileges the collector needs, and it surfaces as missing data rather than an error. Both mutations fail the new tests. - requests and limits arrive as raw "name=quantity,..." strings because Resolve deliberately leaves them unparsed, so a malformed value errors here instead of becoming an empty ResourceList. spec.snapshot.output.format is not projected, and that is deliberate: format is applied at delivery, not by the agent. The Job always stages YAML in a ConfigMap, so a format routed through AgentConfig would be silently ignored (#2398). Returns a zero-value AgentConfig rather than nil when the document has no spec.snapshot, matching the "returns zero values" contract in the Config godoc and letting a caller derive unconditionally. nilnil flagged the original (nil, nil) return, which was the better prompt. Also strengthens AgentConfig's stability pin. It was a bare composite literal that compiles through any rename or retype; Cleanup, Privileged and Timeout are now pinned by name and type, since all three are derived through transforms with no other guard. Refs #2245 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; 9 remain after this review. 📝 WalkthroughWalkthroughThe PR adds Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: 🔵 Low · up to This API can carry remotely loaded configuration into privileged snapshot collector settings. Because callers still explicitly invoke collection and existing deployment validation remains in place, the change is mergeable with owner awareness that HTTP(S) configuration sources should be authenticated or integrity-protected. Suggested reviewers: 🚥 Pre-merge checks | ✅ 4✅ Passed checks (4 passed)
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Inline comments:
In `@pkg/client/v1/config.go`:
- Around line 567-570: Update the settings-count comment near the agent Job
mapping to say “Eighteen” instead of “Sixteen,” preserving the listed settings
and implementation unchanged.
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docs/integrator/go-library.mdpkg/client/v1/config.gopkg/client/v1/config_test.gopkg/client/v1/stability_test.go
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The SnapshotAgentConfig godoc said "Sixteen settings" while listing eighteen: seventeen assigned in the struct literal plus Timeout conditionally. The number was wrong when written, not drifted into. Removed rather than corrected. This is the fourth count in prose in this workstream that did not match the code beside it, and the list is already authoritative and self-counting, so the number could only ever go stale. Reported by CodeRabbit on #2538. Refs #2245 Signed-off-by: Mark Chmarny <mark@chmarny.com>
Review findings on #2538. All three verified against the code and mutation-verified: disabling each fix reproduces the reported behavior. Absent spec.snapshot applied in-section defaults. Resolve() returns a NON-nil SnapshotResolved for an absent section, so the `resolved == nil` guard never fired and a document with no spec.snapshot derived Cleanup=true and Privileged=true -- contradicting the documented zero-value contract. Now checks section presence directly. The test gap was the real failure: the absent case only covered a nil Config, never a document that omits the section, so it passed on an ambiguous condition rather than the one it claimed to check. The consequence is now documented rather than left implicit: a zero AgentConfig has Privileged=false and is NOT a working configuration. Defaults apply when the section exists and is silent about a field; a document that made no snapshot decisions does not get decisions invented for it, so a caller in that position supplies its own -- as the CLI does from its flag defaults. OS bypassed the CLI's normalization. The CLI parses --os through the criteria registry so undocumented values error and casing is normalized; copying resolved.OS raw meant "Talos" reached the agent, missed its exact "talos" match, and would have selected incompatible host mounts. Now parsed, erroring on undocumented values. spec.snapshot.output is no longer projected at all. Per AgentConfig.Output's own godoc, any value that is not a cm:// URI stages to an internal ConfigMap and delivery becomes the caller's job -- so mapping output.path onto it would have looked configured and written nothing. Output describes delivery; AgentConfig describes the collection Job. Dropping the mapping is more honest than documenting a misleading one, and it makes the whole section coherently un-projected alongside output.format. Refs #2245 Signed-off-by: Mark Chmarny <mark@chmarny.com>
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Summary
Project
spec.snapshotonto the facade.Config.SnapshotAgentConfig()derivesthe
AgentConfigthatClient.CollectSnapshotconsumes, closing the third ofthe three sections #2245 scoped.
Motivation / Context
Configprojectedspec.verify,spec.recipe,spec.bundleandspec.validate;spec.snapshotwas reachable only throughUnwrap(). Thiscompletes the set, so an integrator can drive the whole workflow from a
committed document without importing
pkg/config.Unblocked by #2120 landing (#2357), which settled
AgentConfig.Refs #2245
Related: #2016, #2521
Type of Change
Component(s) Affected
pkg/client/v1Implementation Notes
AgentConfig's fields are exported, so this returns a populated struct ratherthan an options slice — a caller overrides any field directly.
Three mappings are transforms, and two fail silently if reimplemented:
noCleanup→Cleanupis inverted, the same shapespec.validatehas.Third section running, so it is pinned both ways again.
privileged→Privilegeddefaults to true when config says nothing.The resolved field is a pointer so unset stays distinct from an explicit
false, and the CLI appliesderefBoolOr(resolved.Privileged, true). Thenaive
ptr != nil && *ptrdrops privileges the collector needs, and itsurfaces as missing data rather than an error.
requests/limitsarrive as rawname=quantity,...strings becauseResolve()deliberately leaves them unparsed, so a malformed value errorshere instead of becoming an empty
ResourceList.Both silent transforms are mutation-verified: applying the naive form fails
the new tests.
spec.snapshot.output.formatis deliberately not projected. Format isapplied at delivery, not by the agent — the Job always stages YAML in a
ConfigMap, so a format routed through
AgentConfigwould be silently ignored(#2398).
Returns a zero-value
AgentConfig, never nil.nilnilflagged theoriginal
(nil, nil)return, which was the better prompt: a zero value matchesthe "returns zero values" contract in the
Configgodoc and lets a callerderive unconditionally.
Also strengthens
AgentConfig's stability pin. It was_ = aicr.AgentConfig{}, a bare composite literal that compiles through any renameor retype.
Cleanup,PrivilegedandTimeoutare now pinned by name andtype, since all three are derived through transforms with no other guard.
Testing
make qualify # green on the committed treeValue assertions across all 16 projected fields, both transforms mutation-
verified, plus the absent-config path.
Risk Assessment
Additive: one new
Configmethod. No existing caller changes behavior.Rollout notes: The CLI still reads
spec.snapshotthrough its own path.Migrating it is blocked on a design question — see the discussion on #2245
about flag precedence needing "was this set", which the derivations
deliberately collapse.
Checklist
make testwith-race)make lint)git commit -S)