103 lines
2.6 KiB
Go
103 lines
2.6 KiB
Go
package pipeline
|
|
|
|
import (
|
|
"fmt"
|
|
"strings"
|
|
|
|
"gitea.maximumdirect.net/eric/notarius/internal/framework/contracts"
|
|
)
|
|
|
|
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")
|
|
}
|
|
|
|
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", normalizedSpec.Key)
|
|
}
|
|
if _, ok := r.constructors[normalizedSpec.Key]; ok {
|
|
return fmt.Errorf("extractor %q is already registered", normalizedSpec.Key)
|
|
}
|
|
|
|
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
|
|
}
|
|
|
|
func (r *ExtractorRegistry) Build(key string) (contracts.Extractor, error) {
|
|
if r == nil {
|
|
return nil, fmt.Errorf("extractor registry must not be nil")
|
|
}
|
|
|
|
normalizedKey := strings.TrimSpace(key)
|
|
if normalizedKey == "" {
|
|
return nil, fmt.Errorf("extractor key must not be empty")
|
|
}
|
|
|
|
constructor, ok := r.constructors[normalizedKey]
|
|
if !ok {
|
|
return nil, fmt.Errorf("extractor %q is not registered", normalizedKey)
|
|
}
|
|
|
|
extractor, err := constructor()
|
|
if err != nil {
|
|
return nil, fmt.Errorf("build extractor %q: %w", normalizedKey, err)
|
|
}
|
|
if extractor == nil {
|
|
return nil, fmt.Errorf("extractor %q constructor returned nil", normalizedKey)
|
|
}
|
|
if extractor.Key() != normalizedKey {
|
|
return nil, fmt.Errorf("extractor %q returned key %q", normalizedKey, extractor.Key())
|
|
}
|
|
|
|
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
|
|
}
|
|
|
|
return sortedRegistryKeys(r.constructors)
|
|
}
|