Add pipeline module registries

internal/framework/pipeline/extractor_registry.go

@@ -2,7 +2,6 @@ package pipeline
 
 import (
 	"fmt"
-	"sort"
 	"strings"
 
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/contracts"
@@ -12,31 +11,44 @@ type ExtractorConstructor func() (contracts.Extractor, error)
 
 type ExtractorRegistry struct {
 	constructors map[string]ExtractorConstructor
+	specs        map[string]ModuleSpec
 }
 
 func NewExtractorRegistry() *ExtractorRegistry {
 	return &ExtractorRegistry{
 		constructors: make(map[string]ExtractorConstructor),
+		specs:        make(map[string]ModuleSpec),
 	}
 }
 
 func (r *ExtractorRegistry) Register(key string, constructor ExtractorConstructor) error {
+	return r.RegisterWithSpec(defaultModuleSpec(key, StageExtract), constructor)
+}
+
+func (r *ExtractorRegistry) RegisterWithSpec(spec ModuleSpec, constructor ExtractorConstructor) error {
 	if r == nil {
 		return fmt.Errorf("extractor registry must not be nil")
 	}
 
-	normalizedKey := strings.TrimSpace(key)
-	if normalizedKey == "" {
-		return fmt.Errorf("extractor key must not be empty")
+	normalizedSpec := normalizeModuleSpec(spec)
+	if err := validateModuleSpec("extractor", StageExtract, normalizedSpec); err != nil {
+		return err
 	}
 	if constructor == nil {
-		return fmt.Errorf("extractor constructor for %q must not be nil", normalizedKey)
+		return fmt.Errorf("extractor constructor for %q must not be nil", normalizedSpec.Key)
 	}
-	if _, ok := r.constructors[normalizedKey]; ok {
-		return fmt.Errorf("extractor %q is already registered", normalizedKey)
+	if _, ok := r.constructors[normalizedSpec.Key]; ok {
+		return fmt.Errorf("extractor %q is already registered", normalizedSpec.Key)
 	}
 
-	r.constructors[normalizedKey] = constructor
+	if r.constructors == nil {
+		r.constructors = make(map[string]ExtractorConstructor)
+	}
+	if r.specs == nil {
+		r.specs = make(map[string]ModuleSpec)
+	}
+	r.constructors[normalizedSpec.Key] = constructor
+	r.specs[normalizedSpec.Key] = cloneModuleSpec(normalizedSpec)
 	return nil
 }
 
@@ -69,15 +81,22 @@ func (r *ExtractorRegistry) Build(key string) (contracts.Extractor, error) {
 	return extractor, nil
 }
 
+func (r *ExtractorRegistry) Spec(key string) (ModuleSpec, bool) {
+	if r == nil {
+		return ModuleSpec{}, false
+	}
+
+	spec, ok := r.specs[strings.TrimSpace(key)]
+	if !ok {
+		return ModuleSpec{}, false
+	}
+	return cloneModuleSpec(spec), true
+}
+
 func (r *ExtractorRegistry) RegisteredKeys() []string {
 	if r == nil {
 		return nil
 	}
 
-	keys := make([]string, 0, len(r.constructors))
-	for key := range r.constructors {
-		keys = append(keys, key)
-	}
-	sort.Strings(keys)
-	return keys
+	return sortedRegistryKeys(r.constructors)
 }