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Das Pflichttest-Gate von workflow verweist nicht mehr auf die geloeschten Pakete (common hat ein eigenes Gate). Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
216 lines
7.0 KiB
Go
216 lines
7.0 KiB
Go
package moduleadapter
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import (
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"context"
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"encoding/json"
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"errors"
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"log"
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"net/http"
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"time"
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"github.com/jackc/pgx/v5/pgxpool"
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"gitea.perlbach24.de/scripte/nexarch/common/svcauth"
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)
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// TenantVerifier prueft einen vom aufrufenden Modul mitgelieferten
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// Tenant-Kontext unabhaengig gegen die Core-Tenant-Registry (TEN-01) -
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// ENG-06: Workflow vertraut dabei nicht der Angabe von DMS/Mail selbst
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// (Muster aus archive/internal/moduleadapter, RET-12).
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type TenantVerifier interface {
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VerifyTenant(ctx context.Context, tenantSlug string) (bool, error)
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}
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// Server bindet die Registrierungs-API an einen Postgres-Pool und
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// verlangt ein Service-Token bei jedem Aufruf (fail closed: ein leeres
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// oder falsches Token wird immer abgewiesen, Lehre aus RET-14/F-08).
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// ownTenantSlug bindet den Server an genau einen Mandanten (ENG-09
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// Akzeptanzkriterium 1/3): Ereignisse mit abweichendem Mandanten werden
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// abgelehnt statt verarbeitet.
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type Server struct {
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pool *pgxpool.Pool
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serviceToken string
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ownTenantSlug string
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tenants TenantVerifier
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}
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func NewServer(pool *pgxpool.Pool, serviceToken, ownTenantSlug string, tenants TenantVerifier) *Server {
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return &Server{pool: pool, serviceToken: serviceToken, ownTenantSlug: ownTenantSlug, tenants: tenants}
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}
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func (s *Server) RegisterRoutes(mux *http.ServeMux) {
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mux.HandleFunc("POST /register", s.requireAuth(s.handleRegister))
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mux.HandleFunc("POST /rollback", s.requireAuth(s.handleRollback))
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mux.HandleFunc("POST /deregister", s.requireAuth(s.handleDeregister))
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mux.HandleFunc("GET /registrations", s.requireAuth(s.handleList))
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mux.HandleFunc("POST /events", s.requireAuth(s.handlePublishEvent))
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}
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func (s *Server) requireAuth(next http.HandlerFunc) http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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got := r.Header.Get("X-Service-Token")
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if !svcauth.Equal(got, s.serviceToken) {
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writeError(w, http.StatusUnauthorized, "service-token fehlt oder ist ungueltig")
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return
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}
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next(w, r)
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}
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}
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// tenantValid prueft den mitgelieferten Tenant-Kontext unabhaengig von
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// der Angabe des registrierenden Moduls (ENG-06 Akzeptanzkriterium 1):
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// er muss zu dieser Server-Instanz passen UND von der Core-Tenant-
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// Registry als echter, gefuehrter Tenant bestaetigt werden. Ein
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// fehlgeschlagener Core-Aufruf gilt als ungueltig (fail closed), kein
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// stillschweigendes Durchwinken.
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func (s *Server) tenantValid(ctx context.Context, tenantSlug string) bool {
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if tenantSlug == "" || tenantSlug != s.ownTenantSlug {
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return false
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}
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if s.tenants == nil {
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return true
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}
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ok, err := s.tenants.VerifyTenant(ctx, tenantSlug)
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if err != nil {
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log.Printf("moduleadapter: tenant-registry-abgleich fehlgeschlagen tenant=%q: %v", tenantSlug, err)
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return false
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}
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return ok
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}
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type registerRequest struct {
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ModuleName string `json:"module_name"`
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ObjectType string `json:"object_type"`
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Triggers []string `json:"triggers"`
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TenantSlug string `json:"tenant_slug"`
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}
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func (s *Server) handleRegister(w http.ResponseWriter, r *http.Request) {
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var req registerRequest
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if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
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writeError(w, http.StatusBadRequest, "ungueltiger anfrage-koerper")
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return
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}
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if !s.tenantValid(r.Context(), req.TenantSlug) {
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log.Printf("moduleadapter: registrierung abgelehnt, unbekannter tenant-kontext modul=%s objekttyp=%s tenant=%q", req.ModuleName, req.ObjectType, req.TenantSlug)
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writeError(w, http.StatusForbidden, "unbekannter tenant-kontext")
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return
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}
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reg, err := Register(r.Context(), s.pool, req.ModuleName, req.ObjectType, req.Triggers)
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if errors.Is(err, ErrDuplicateTriggers) {
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writeError(w, http.StatusConflict, "registrierung unveraendert, keine neue version noetig")
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return
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}
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if err != nil {
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writeError(w, http.StatusBadRequest, err.Error())
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return
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}
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writeJSON(w, http.StatusOK, reg)
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}
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type rollbackRequest struct {
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ModuleName string `json:"module_name"`
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ObjectType string `json:"object_type"`
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ToVersion int `json:"to_version"`
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}
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func (s *Server) handleRollback(w http.ResponseWriter, r *http.Request) {
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var req rollbackRequest
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if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
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writeError(w, http.StatusBadRequest, "ungueltiger anfrage-koerper")
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return
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}
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reg, err := Rollback(r.Context(), s.pool, req.ModuleName, req.ObjectType, req.ToVersion)
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if errors.Is(err, ErrNotRegistered) {
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writeError(w, http.StatusNotFound, "objekttyp ist nicht registriert")
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return
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}
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if err != nil {
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writeError(w, http.StatusBadRequest, err.Error())
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return
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}
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writeJSON(w, http.StatusOK, reg)
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}
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type deregisterRequest struct {
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ModuleName string `json:"module_name"`
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ObjectType string `json:"object_type"`
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}
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func (s *Server) handleDeregister(w http.ResponseWriter, r *http.Request) {
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var req deregisterRequest
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if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
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writeError(w, http.StatusBadRequest, "ungueltiger anfrage-koerper")
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return
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}
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err := Deregister(r.Context(), s.pool, req.ModuleName, req.ObjectType)
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if errors.Is(err, ErrNotRegistered) {
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writeError(w, http.StatusNotFound, "objekttyp ist nicht registriert")
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return
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}
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if err != nil {
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writeError(w, http.StatusInternalServerError, "deregistrierung fehlgeschlagen")
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return
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}
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w.WriteHeader(http.StatusNoContent)
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}
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func (s *Server) handleList(w http.ResponseWriter, r *http.Request) {
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regs, err := ListRegistrations(r.Context(), s.pool)
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if err != nil {
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writeError(w, http.StatusInternalServerError, "registrierungen konnten nicht gelesen werden")
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return
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}
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writeJSON(w, http.StatusOK, regs)
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}
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type publishEventRequest struct {
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ModuleName string `json:"module_name"`
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ObjectType string `json:"object_type"`
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Trigger string `json:"trigger"`
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ObjectID string `json:"object_id"`
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TenantSlug string `json:"tenant_slug"`
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DedupeKey string `json:"dedupe_key"`
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Version int `json:"version"`
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OccurredAt time.Time `json:"occurred_at"`
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Payload json.RawMessage `json:"payload"`
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}
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func (s *Server) handlePublishEvent(w http.ResponseWriter, r *http.Request) {
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var req publishEventRequest
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if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
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writeError(w, http.StatusBadRequest, "ungueltiger anfrage-koerper")
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return
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}
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accepted, err := PublishEvent(r.Context(), s.pool, s.ownTenantSlug, Event{
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ModuleName: req.ModuleName,
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ObjectType: req.ObjectType,
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Trigger: req.Trigger,
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ObjectID: req.ObjectID,
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TenantSlug: req.TenantSlug,
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DedupeKey: req.DedupeKey,
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Version: req.Version,
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OccurredAt: req.OccurredAt,
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Payload: req.Payload,
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})
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if err != nil {
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writeError(w, http.StatusBadRequest, err.Error())
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return
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}
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if !accepted {
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writeError(w, http.StatusForbidden, "ereignis fuer fremden mandanten abgelehnt")
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return
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}
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w.WriteHeader(http.StatusAccepted)
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}
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func writeJSON(w http.ResponseWriter, status int, v any) {
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w.Header().Set("Content-Type", "application/json")
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w.WriteHeader(status)
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_ = json.NewEncoder(w).Encode(v)
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}
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func writeError(w http.ResponseWriter, status int, message string) {
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writeJSON(w, status, map[string]string{"error": message})
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}
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