errors

type CandidateVerdict ¶

type CandidateVerdict struct {
	// Transformer is the candidate's FQN.
	Transformer string

	// Matched is the combined verdict of the unify and predicate rungs.
	Matched bool

	// MissingLabels are the required labels the predicate rung found
	// missing or divergent, in the build's order.
	MissingLabels []string
}

CandidateVerdict is one candidate the render build's demand walk reached for a component: whether it matched and, when the label predicate refused it, which required labels the component's matchLabels lacked or carried with a different value. A candidate the always-unify rung refused appears unmatched with no missing labels; its conflict is a UnifyRefusal on the render diagnostics. It is data, not an error.

type IdentityError ¶

type IdentityError struct {
	// Field names the mismatched identity field: "path" | "version".
	Field string

	// Declared is the value the artifact's metadata claims.
	Declared string

	// Fetched is the coordinate/tag the artifact was actually fetched by.
	Fetched string

	// Coordinate is the full fetched coordinate for context,
	// e.g. "opmodel.dev/catalogs/opm@v4 v4.0.1".
	Coordinate string
}

IdentityError reports a mismatch between an artifact's declared identity and the coordinate it was fetched by (0010 D11), including the version clause (D9): the kernel is the version label's verifier, never its source. It is emitted at the one library read site that holds both a fetched coordinate and decoded metadata: module acquire (the kernel's registry acquisition) returns it bare, so frontends route on it via errors.As. A platform's catalog builds are verified structurally by core instead (0019 D5: the registry key binds to the embedded catalog's modulePath), so no catalog read site produces it.

func (e IdentityError) Error() string

type OverSubscribedContract ¶

type OverSubscribedContract struct {
	// Key is the provider-fulfilled contract key (a resource or trait FQN).
	Key string

	// Catalogs are the registry keys whose transformers require Key: the
	// catalog module paths (path@major) core binds each entry's embedded
	// catalog identity to. Sorted, so the refusal is deterministic.
	Catalogs []string
}

OverSubscribedContract is one row of the single-provider guard: a contract key declared `fulfilment: "provider"` on a required demand of transformers from more than one of the platform's enabled registry entries (enhancement 0010 D32 as corrected by D37; enforced inside the render build since library-render-cutover). A platform must carry exactly one provider for such a key; two is a misconfigured platform, not an arbitration.

It is data, not an error; OverSubscribedContractsError is the gate cause.

type OverSubscribedContractsError ¶

type OverSubscribedContractsError struct {
	// Contracts is the over-subscription set, key-sorted.
	Contracts []OverSubscribedContract
}

OverSubscribedContractsError aggregates every over-subscription row into the one typed cause the fail-closed gate joins. It carries the diagnostics' rows unchanged and wraps nothing.

func (e *OverSubscribedContractsError) Error() string

type SkewError ¶

type SkewError struct {
	// Path is the major-qualified module path in skew.
	Path string

	// ModuleVersion is the build the instance module requires.
	ModuleVersion string

	// PlatformVersion is the build the platform module carries.
	PlatformVersion string
}

SkewError is the refuse-mode diagnostic for catalog version skew (enhancement 0019 D7/D18): the instance module's cue.mod requires a NEWER build of an OPM-namespace path than the platform module carries, and the caller configured the render to refuse rather than warn. The render stops before evaluation; the platform's build is what would have executed.

func (e *SkewError) Error() string

type TransformError ¶

type TransformError struct {
	Component   string
	Transformer string
	Cause       error
}

TransformError indicates transformer execution failed for one matched (component, transformer) pair. Unlike the verdict rows, it wraps a real cause: the CUE error the pair's output carried, or the kernel's own concreteness refusal.

func (e *TransformError) Error() string

func (e *TransformError) Unwrap() error

type UnifyRefusal ¶

type UnifyRefusal struct {
	// Component is the component whose bodies diverged.
	Component string

	// Transformer is the FQN of the candidate that was disqualified.
	Transformer string

	// Conflicts are the primitive FQNs at which the bodies conflicted, in
	// the build's order.
	Conflicts []string
}

UnifyRefusal is one row of the always-unify rung: a candidate transformer whose required primitive bodies conflict with the component's own bodies. It is data, not an error — the rung's verdicts are carried on the render diagnostics and aggregated into a gate cause, never raised on their own.

The conflict is reported as the FQNs it occurred at, not as a CUE error tree: the glue decides the verdict inside the build and a CUE error is not exportable from there (0019 D10).

type UnmatchedComponent ¶

type UnmatchedComponent struct {
	// Component is the component name.
	Component string

	// Candidates are the verdicts on every transformer the build evaluated
	// for the component, in transformer order. Empty when no transformer
	// was a candidate at all (the component's demands are then on the
	// unresolved rows).
	Candidates []CandidateVerdict
}

UnmatchedComponent is one component no transformer matched, with every candidate the demand walk reached for it. It is data, not an error; UnmatchedComponentsError is the gate cause.

type UnmatchedComponentsError ¶

type UnmatchedComponentsError struct {
	// Components is the unmatched set, in build order.
	Components []UnmatchedComponent
}

UnmatchedComponentsError is the render gate's refusal for components no transformer matched. It carries the diagnostics' rows unchanged, so a frontend can list which candidates were evaluated and why each was refused, and wraps nothing: a row is data, so there is no cause of another kind underneath. Reachable via errors.As from *kernel.RenderError.

func (e *UnmatchedComponentsError) Error() string

type UnresolvedDemand ¶

type UnresolvedDemand struct {
	// Component is the component whose demand went unresolved.
	Component string

	// FQN is the demanded contract key.
	FQN string

	// Kind is "resource" or "trait".
	Kind string

	// Alternatives is the same-base contract-key set the platform does
	// implement, in contract-key order (kube-aware apiVersion ladder,
	// D34/D4, applied inside the build). Empty when nothing implements the
	// contract.
	Alternatives []string

	// Disqualified carries, when candidates existed, the unify refusals that
	// disqualified them. Predicate-disqualified candidates contribute no
	// entry (there is no unify conflict to carry).
	Disqualified []UnifyRefusal

	// DefinedBy is the registry key (module path) of the enabled catalog
	// whose contract maps list the demanded key, read inside the build from
	// the platform's derived contract inventory (#contracts.definedBy,
	// enhancement 0015 D18) and never parsed off the FQN. Empty when no
	// enabled catalog lists it. Diagnostic only: its presence or absence
	// never changes whether the demand refuses.
	DefinedBy string
}

UnresolvedDemand is the structured diagnostic for a demanded contract key the platform does not resolve (0010 D28): the matcher index holds no candidate for it, or every candidate was disqualified (by unification or by predicate). Every declared resource is a required demand; a trait demand is unresolved only when its effective `optional` posture is load-bearing (a trait whose posture the catalog never stated is a build error, not a diagnostics row).

The D4 contract-key diagnostic is carried by Alternatives: empty means nothing on this platform implements the contract at any version; non-empty means the contract base is implemented at a different apiVersion only. DefinedBy carries the 0015 D18 arm beside it: which enabled catalog lists the demanded key in its contract maps, so the refusal can say "defined by this catalog and implemented by nothing" rather than "unknown".

It is data, not an error; UnresolvedDemandsError is the gate cause.

type UnresolvedDemandsError ¶

type UnresolvedDemandsError struct {
	// Demands is the full unresolved-demand set, in build order.
	Demands []UnresolvedDemand
}

UnresolvedDemandsError aggregates every unresolved demand of a render into the typed cause Render fails with through the fail-closed gate (D28). It carries the diagnostics' rows unchanged and wraps nothing: a row is data, so there is no cause of another kind underneath.

func (e *UnresolvedDemandsError) Error() string