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patrickandClaude Sonnet 5 b2bd1c4c1a
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API-22: modul endpunkt discovery
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-09-28 04:56:41 +00:00

54 lines
1.7 KiB
Go

// Package moduledirectory implementiert API-22: einen unauthentifizierten
// Discovery-Endpunkt, ueber den ein Client, der nur die Server-Grundadresse
// kennt, die tatsaechlichen Basis-Adressen der Fachmodule ermitteln kann.
// Die Modulliste kommt aus einer serverseitig gepflegten JSON-Datei (analog
// zu web/portal/config/modules.json aus SHL-02, aber server- statt
// clientseitig), damit neue Module ohne Codeaenderung ergaenzt werden koennen.
package moduledirectory
import (
"encoding/json"
"fmt"
"net/http"
"os"
)
// Module ist bewusst auf Key und BaseURL beschraenkt (Akzeptanzkriterium 3):
// keine Zugangsdaten, keine internen Pfade.
type Module struct {
Key string `json:"key"`
BaseURL string `json:"base_url"`
}
// LoadFile liest und validiert die Modulverzeichnis-Konfiguration.
func LoadFile(path string) ([]Module, error) {
data, err := os.ReadFile(path)
if err != nil {
return nil, fmt.Errorf("modulverzeichnis lesen: %w", err)
}
var modules []Module
if err := json.Unmarshal(data, &modules); err != nil {
return nil, fmt.Errorf("modulverzeichnis parsen: %w", err)
}
for _, m := range modules {
if m.Key == "" || m.BaseURL == "" {
return nil, fmt.Errorf("modulverzeichnis: key und base_url sind fuer jeden eintrag pflicht")
}
}
return modules, nil
}
type discoveryResponse struct {
Modules []Module `json:"modules"`
}
// Handler liefert die Modulliste unauthentifiziert aus (Akzeptanzkriterium 1).
func Handler(modules []Module) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode(discoveryResponse{Modules: modules})
}
}