Add production default pipeline modules

internal/modules/normalize/noop/normalizer.go

@@ -0,0 +1,89 @@
+package noop
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+
+	"gitea.maximumdirect.net/eric/notarius/internal/core/artifacts"
+	"gitea.maximumdirect.net/eric/notarius/internal/core/source"
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/contracts"
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/pipeline"
+)
+
+const Key = "noop"
+
+var _ contracts.Normalizer = (*Normalizer)(nil)
+
+type Normalizer struct{}
+
+func New() *Normalizer {
+	return &Normalizer{}
+}
+
+func (n *Normalizer) Key() string {
+	return Key
+}
+
+func (n *Normalizer) Normalize(ctx context.Context, req contracts.NormalizeRequest) (contracts.NormalizeResult, error) {
+	if n == nil {
+		return contracts.NormalizeResult{}, normalizerErrorf("normalizer must not be nil")
+	}
+	if ctx == nil {
+		return contracts.NormalizeResult{}, normalizerErrorf("context must not be nil")
+	}
+	if err := ctx.Err(); err != nil {
+		return contracts.NormalizeResult{}, normalizerErrorf("context error before normalize: %w", err)
+	}
+	return contracts.NormalizeResult{Candidates: cloneCandidates(req.Candidates)}, nil
+}
+
+func ModuleSpec() pipeline.ModuleSpec {
+	return pipeline.ModuleSpec{
+		Key:      Key,
+		Stage:    pipeline.StageNormalize,
+		Requires: []string{"merged"},
+		Provides: []string{"normalized"},
+	}
+}
+
+func Register(registry *pipeline.NormalizerRegistry) error {
+	return registry.RegisterWithSpec(ModuleSpec(), func() (contracts.Normalizer, error) {
+		return New(), nil
+	})
+}
+
+func cloneCandidates(candidates []artifacts.ArtifactCandidate) []artifacts.ArtifactCandidate {
+	if len(candidates) == 0 {
+		return nil
+	}
+
+	out := make([]artifacts.ArtifactCandidate, 0, len(candidates))
+	for _, candidate := range candidates {
+		out = append(out, artifacts.ArtifactCandidate{
+			Index:         candidate.Index,
+			ExtractorKey:  candidate.ExtractorKey,
+			ArtifactType:  candidate.ArtifactType,
+			SchemaVersion: candidate.SchemaVersion,
+			Payload:       append(json.RawMessage(nil), candidate.Payload...),
+			SourceRefs:    append([]source.SourceRef(nil), candidate.SourceRefs...),
+			Metadata:      cloneMetadata(candidate.Metadata),
+		})
+	}
+	return out
+}
+
+func cloneMetadata(metadata map[string]any) map[string]any {
+	if len(metadata) == 0 {
+		return nil
+	}
+	out := make(map[string]any, len(metadata))
+	for key, value := range metadata {
+		out[key] = value
+	}
+	return out
+}
+
+func normalizerErrorf(format string, args ...any) error {
+	return fmt.Errorf("noop normalizer: "+format, args...)
+}