Compare commits
2
Commits
| Author | SHA1 | Date | |
|---|---|---|---|
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c9e8edbbf0 | ||
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b12d53f469 |
@@ -0,0 +1,96 @@
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// Package audit implementiert Core AUD-01: das zentrale, vom allgemeinen
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// Anwendungs-Log getrennte Audit-Datenmodell fuer sicherheits- und
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// compliancerelevante Ereignisse (wer, was, wann, an welchem Tenant).
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// Unveraenderlichkeit (Append-only) ist AUD-02, Export/Filter-API ist AUD-03
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// — dieses Paket liefert nur das Datenmodell und den EINEN zentralen
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// Schreibpfad (Akzeptanzkriterium 3).
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package audit
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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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"fmt"
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"time"
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"github.com/jackc/pgx/v5/pgxpool"
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)
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// SystemTenant ist der reservierte Tenant-Bezug fuer mandantenuebergreifende
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// Ereignisse (z.B. Superadmin-Aktionen) — es gibt bewusst KEINEN Weg, ein
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// Ereignis ganz ohne Tenant-Bezug zu schreiben (Akzeptanzkriterium 2).
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const SystemTenant = "system"
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var ErrMissingTenant = errors.New("audit: tenant_slug darf nicht leer sein")
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var ErrMissingActor = errors.New("audit: actor darf nicht leer sein")
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var ErrMissingAction = errors.New("audit: action darf nicht leer sein")
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// Event ist ein strukturiertes Audit-Ereignis (Akzeptanzkriterium 1: Akteur,
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// Aktion, Zielobjekt, Zeitpunkt, Tenant).
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type Event struct {
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TenantSlug string
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Actor string
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Action string
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Target string
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Metadata map[string]any
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OccurredAt time.Time
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}
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// Log ist der EINE zentrale Schreibpfad fuer Audit-Ereignisse — es gibt
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// bewusst keine zweite Schreibmoeglichkeit, damit kein Handler versehentlich
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// direkt in audit_events schreibt und dabei die Validierung umgeht
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// (Akzeptanzkriterium 3).
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type Log struct {
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pool *pgxpool.Pool
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}
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func NewLog(pool *pgxpool.Pool) *Log {
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return &Log{pool: pool}
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}
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// Record persistiert genau einen Audit-Eintrag. Fehlender Tenant-Bezug wird
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// bereits hier abgewiesen (klarer Fehler statt Constraint-Verletzung im
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// Normalfall) — die Datenbank-CHECK-Constraint aus der Migration ist die
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// zweite, unumgehbare Verteidigungslinie (Akzeptanzkriterium 2 / Pruefung 2).
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func (l *Log) Record(ctx context.Context, e Event) error {
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if e.TenantSlug == "" {
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return ErrMissingTenant
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}
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if e.Actor == "" {
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return ErrMissingActor
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}
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if e.Action == "" {
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return ErrMissingAction
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}
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if e.Metadata == nil {
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e.Metadata = map[string]any{}
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}
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metadataJSON, err := json.Marshal(e.Metadata)
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if err != nil {
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return fmt.Errorf("metadaten serialisieren: %w", err)
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}
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if e.OccurredAt.IsZero() {
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e.OccurredAt = time.Now()
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}
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_, err = l.pool.Exec(ctx, `
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INSERT INTO audit_events (occurred_at, tenant_slug, actor, action, target, metadata)
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VALUES ($1, $2, $3, $4, $5, $6)
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`, e.OccurredAt, e.TenantSlug, e.Actor, e.Action, e.Target, metadataJSON)
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if err != nil {
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return fmt.Errorf("audit-ereignis schreiben: %w", err)
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}
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return nil
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}
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// CountByTenant ist eine schlanke Lesehilfe fuer Tests/Diagnose — die
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// eigentliche Filter-/Export-API ist AUD-03, hier bewusst nicht vorgezogen.
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func (l *Log) CountByTenant(ctx context.Context, tenantSlug string) (int, error) {
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var n int
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if err := l.pool.QueryRow(ctx, `
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SELECT count(*) FROM audit_events WHERE tenant_slug = $1
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`, tenantSlug).Scan(&n); err != nil {
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return 0, fmt.Errorf("audit-ereignisse zaehlen: %w", err)
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}
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return n, nil
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}
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@@ -0,0 +1,132 @@
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package audit
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import (
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"context"
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"errors"
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"os"
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"testing"
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"github.com/jackc/pgx/v5/pgxpool"
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)
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func setupAuditTest(t *testing.T) (*Log, *pgxpool.Pool, func()) {
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t.Helper()
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adminDSN := os.Getenv("TEST_ADMIN_DSN")
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if adminDSN == "" {
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t.Skip("TEST_ADMIN_DSN nicht gesetzt, Integrationstest uebersprungen")
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}
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ctx := context.Background()
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pool, err := pgxpool.New(ctx, adminDSN)
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if err != nil {
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t.Fatalf("pool: %v", err)
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}
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if _, err := pool.Exec(ctx, `
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CREATE TABLE IF NOT EXISTS audit_events (
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id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
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occurred_at TIMESTAMPTZ NOT NULL DEFAULT now(),
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tenant_slug TEXT NOT NULL CHECK (tenant_slug <> ''),
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actor TEXT NOT NULL CHECK (actor <> ''),
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action TEXT NOT NULL CHECK (action <> ''),
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target TEXT NOT NULL,
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metadata JSONB NOT NULL DEFAULT '{}'::jsonb
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)`); err != nil {
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t.Fatalf("schema: %v", err)
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}
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cleanup := func() {
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_, _ = pool.Exec(ctx, `DELETE FROM audit_events WHERE tenant_slug LIKE 'test\_%' ESCAPE '\' OR tenant_slug = $1`, SystemTenant)
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pool.Close()
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}
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return NewLog(pool), pool, cleanup
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}
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// Akzeptanzkriterium 1 + Pruefung 1: ein sicherheitsrelevanter Vorgang
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// (hier: fehlgeschlagener Login) erzeugt zuverlaessig genau einen Eintrag.
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func TestRecord_PersistsExactlyOneEventPerSecurityIncident(t *testing.T) {
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log, pool, cleanup := setupAuditTest(t)
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defer cleanup()
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ctx := context.Background()
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err := log.Record(ctx, Event{
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TenantSlug: "test_acme",
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Actor: "alice@example.com",
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Action: "iam.login_failed",
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Target: "user:alice@example.com",
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Metadata: map[string]any{"reason": "falsches passwort"},
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})
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if err != nil {
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t.Fatalf("record: %v", err)
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}
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count, err := log.CountByTenant(ctx, "test_acme")
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if err != nil {
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t.Fatalf("count: %v", err)
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}
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if count != 1 {
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t.Fatalf("erwartet genau 1 audit-eintrag, habe %d", count)
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}
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var actor, action, target string
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if err := pool.QueryRow(ctx, `
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SELECT actor, action, target FROM audit_events WHERE tenant_slug = 'test_acme'
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`).Scan(&actor, &action, &target); err != nil {
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t.Fatalf("eintrag lesen: %v", err)
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}
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if actor != "alice@example.com" || action != "iam.login_failed" || target != "user:alice@example.com" {
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t.Fatalf("eintrag unerwartet: actor=%q action=%q target=%q", actor, action, target)
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}
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}
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// Akzeptanzkriterium 2 + Pruefung 2 (App-Ebene): fehlender Tenant-Bezug wird
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// bereits vom zentralen Schreibpfad abgewiesen.
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func TestRecord_RejectsMissingTenant(t *testing.T) {
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log, _, cleanup := setupAuditTest(t)
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defer cleanup()
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ctx := context.Background()
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err := log.Record(ctx, Event{TenantSlug: "", Actor: "alice", Action: "irgendwas"})
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if !errors.Is(err, ErrMissingTenant) {
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t.Fatalf("erwartet ErrMissingTenant, habe %v", err)
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}
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}
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// Akzeptanzkriterium 2 + Pruefung 2 (DB-Ebene): selbst ein direkter INSERT,
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// der Log.Record umgeht, wird durch die CHECK-Constraint verhindert — der
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// Schutz haengt nicht allein von der Go-Validierung ab.
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func TestConstraint_RejectsMissingTenantAtDatabaseLevel(t *testing.T) {
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_, pool, cleanup := setupAuditTest(t)
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defer cleanup()
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ctx := context.Background()
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_, err := pool.Exec(ctx, `
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INSERT INTO audit_events (tenant_slug, actor, action, target)
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VALUES ('', 'alice', 'irgendwas', 'ziel')
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`)
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if err == nil {
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t.Fatal("erwartet fehler durch CHECK-constraint bei leerem tenant_slug, habe nil")
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}
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}
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func TestRecord_RejectsMissingActorAndAction(t *testing.T) {
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log, _, cleanup := setupAuditTest(t)
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defer cleanup()
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ctx := context.Background()
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if err := log.Record(ctx, Event{TenantSlug: "test_acme", Actor: "", Action: "x"}); !errors.Is(err, ErrMissingActor) {
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t.Fatalf("erwartet ErrMissingActor, habe %v", err)
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}
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if err := log.Record(ctx, Event{TenantSlug: "test_acme", Actor: "alice", Action: ""}); !errors.Is(err, ErrMissingAction) {
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t.Fatalf("erwartet ErrMissingAction, habe %v", err)
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}
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}
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func TestRecord_SystemTenantForCrossTenantEvents(t *testing.T) {
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log, _, cleanup := setupAuditTest(t)
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defer cleanup()
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ctx := context.Background()
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if err := log.Record(ctx, Event{TenantSlug: SystemTenant, Actor: "superadmin", Action: "tenant.provisioned", Target: "tenant:acme"}); err != nil {
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t.Fatalf("record mit SystemTenant: %v", err)
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}
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}
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@@ -0,0 +1,122 @@
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package audit
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import (
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"context"
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"encoding/csv"
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"encoding/json"
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"fmt"
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"io"
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"time"
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)
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// Filter grenzt einen Export ein (Akzeptanzkriterium 1). Leere/Nil-Felder
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// bedeuten "kein Filter auf diesem Feld".
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type Filter struct {
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TenantSlug string
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Actor string
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Action string
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From *time.Time
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To *time.Time
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}
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func buildFilterQuery(f Filter) (string, []any) {
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query := `SELECT occurred_at, tenant_slug, actor, action, target, metadata FROM audit_events WHERE 1=1`
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var args []any
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if f.TenantSlug != "" {
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args = append(args, f.TenantSlug)
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query += fmt.Sprintf(" AND tenant_slug = $%d", len(args))
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}
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if f.Actor != "" {
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args = append(args, f.Actor)
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query += fmt.Sprintf(" AND actor = $%d", len(args))
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}
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if f.Action != "" {
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args = append(args, f.Action)
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query += fmt.Sprintf(" AND action = $%d", len(args))
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}
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if f.From != nil {
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args = append(args, *f.From)
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query += fmt.Sprintf(" AND occurred_at >= $%d", len(args))
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}
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if f.To != nil {
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args = append(args, *f.To)
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query += fmt.Sprintf(" AND occurred_at <= $%d", len(args))
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}
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query += " ORDER BY occurred_at"
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return query, args
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}
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// StreamCSV schreibt gefilterte Audit-Eintraege direkt als CSV in w, Zeile
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// fuer Zeile ueber rows.Next() — es wird zu keinem Zeitpunkt das gesamte
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// Ergebnis im Speicher aufgebaut (Akzeptanzkriterium 3 / Pruefung 1).
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func (l *Log) StreamCSV(ctx context.Context, filter Filter, w io.Writer) error {
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query, args := buildFilterQuery(filter)
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rows, err := l.pool.Query(ctx, query, args...)
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if err != nil {
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return fmt.Errorf("export abfragen: %w", err)
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}
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defer rows.Close()
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cw := csv.NewWriter(w)
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if err := cw.Write([]string{"occurred_at", "tenant_slug", "actor", "action", "target", "metadata"}); err != nil {
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return fmt.Errorf("csv-header schreiben: %w", err)
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}
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for rows.Next() {
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var occurredAt time.Time
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var tenantSlug, actor, action, target string
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var metadataJSON []byte
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if err := rows.Scan(&occurredAt, &tenantSlug, &actor, &action, &target, &metadataJSON); err != nil {
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return fmt.Errorf("zeile lesen: %w", err)
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}
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if err := cw.Write([]string{
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occurredAt.Format(time.RFC3339), tenantSlug, actor, action, target, string(metadataJSON),
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}); err != nil {
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return fmt.Errorf("csv-zeile schreiben: %w", err)
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}
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}
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cw.Flush()
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if err := rows.Err(); err != nil {
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return fmt.Errorf("export lesen: %w", err)
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}
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return cw.Error()
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}
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// exportRecord ist die JSON-Repraesentation einer exportierten Zeile.
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type exportRecord struct {
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OccurredAt time.Time `json:"occurred_at"`
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TenantSlug string `json:"tenant_slug"`
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Actor string `json:"actor"`
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Action string `json:"action"`
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Target string `json:"target"`
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Metadata json.RawMessage `json:"metadata"`
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}
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// StreamJSON schreibt gefilterte Audit-Eintraege als JSON Lines (ein
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// JSON-Objekt pro Zeile) — bewusst kein einzelnes grosses JSON-Array, da
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// dessen korrektes Streaming (Kommas/Klammern ohne Zwischenpufferung)
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// unnoetige Komplexitaet fuer denselben Zweck waere. Wie StreamCSV
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// zeilenweise ueber rows.Next(), kein Aufbau im Speicher.
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func (l *Log) StreamJSON(ctx context.Context, filter Filter, w io.Writer) error {
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query, args := buildFilterQuery(filter)
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rows, err := l.pool.Query(ctx, query, args...)
|
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if err != nil {
|
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return fmt.Errorf("export abfragen: %w", err)
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}
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defer rows.Close()
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enc := json.NewEncoder(w)
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for rows.Next() {
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var rec exportRecord
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var metadataJSON []byte
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if err := rows.Scan(&rec.OccurredAt, &rec.TenantSlug, &rec.Actor, &rec.Action, &rec.Target, &metadataJSON); err != nil {
|
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return fmt.Errorf("zeile lesen: %w", err)
|
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}
|
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rec.Metadata = metadataJSON
|
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if err := enc.Encode(rec); err != nil {
|
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return fmt.Errorf("json-zeile schreiben: %w", err)
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||||
}
|
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}
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return rows.Err()
|
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}
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@@ -0,0 +1,73 @@
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package audit
|
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|
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import (
|
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"context"
|
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"net/http"
|
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"time"
|
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)
|
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|
||||
// Authorize entscheidet, ob caller den Export ausfuehren darf. Die
|
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// eigentliche Rollen-/Rechtepruefung (RBAC-02 Policy-Enforcement) ist nicht
|
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// Teil dieser Kachel — ExportHandler kennt nur diese schmale Schnittstelle,
|
||||
// analog zum RetentionRegistrar-Muster aus AUD-05.
|
||||
type Authorize func(ctx context.Context, caller string) bool
|
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|
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// ExportHandler stellt den Export als HTTP-Endpunkt bereit
|
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// (Akzeptanzkriterium 2: fuer berechtigte Rollen verfuegbar).
|
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type ExportHandler struct {
|
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log *Log
|
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authorize Authorize
|
||||
}
|
||||
|
||||
func NewExportHandler(log *Log, authorize Authorize) *ExportHandler {
|
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return &ExportHandler{log: log, authorize: authorize}
|
||||
}
|
||||
|
||||
// Export liest Filter-Query-Parameter (tenant, actor, action, from, to,
|
||||
// format) und schreibt DIREKT auf den ResponseWriter (io.Writer) — dieselbe
|
||||
// Streaming-Funktion wie in export.go, kein zusaetzlicher Pufferungsschritt.
|
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func (h *ExportHandler) Export(w http.ResponseWriter, r *http.Request) {
|
||||
// "caller" identifiziert die anfragende Person fuer die Berechtigungs-
|
||||
// pruefung — bewusst getrennt vom Filterfeld "actor" (das den
|
||||
// AUDIT-Akteur meint, ueber den gefiltert wird).
|
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caller := r.URL.Query().Get("caller")
|
||||
if caller == "" || !h.authorize(r.Context(), caller) {
|
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http.Error(w, "keine berechtigung fuer audit-log-export", http.StatusForbidden)
|
||||
return
|
||||
}
|
||||
|
||||
filter := Filter{
|
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TenantSlug: r.URL.Query().Get("tenant"),
|
||||
Actor: r.URL.Query().Get("actor"),
|
||||
Action: r.URL.Query().Get("action"),
|
||||
}
|
||||
if from := r.URL.Query().Get("from"); from != "" {
|
||||
t, err := time.Parse(time.RFC3339, from)
|
||||
if err != nil {
|
||||
http.Error(w, "ungueltiges from-datum, erwartet RFC3339", http.StatusBadRequest)
|
||||
return
|
||||
}
|
||||
filter.From = &t
|
||||
}
|
||||
if to := r.URL.Query().Get("to"); to != "" {
|
||||
t, err := time.Parse(time.RFC3339, to)
|
||||
if err != nil {
|
||||
http.Error(w, "ungueltiges to-datum, erwartet RFC3339", http.StatusBadRequest)
|
||||
return
|
||||
}
|
||||
filter.To = &t
|
||||
}
|
||||
|
||||
switch r.URL.Query().Get("format") {
|
||||
case "json":
|
||||
w.Header().Set("Content-Type", "application/x-ndjson")
|
||||
if err := h.log.StreamJSON(r.Context(), filter, w); err != nil {
|
||||
http.Error(w, "export fehlgeschlagen", http.StatusInternalServerError)
|
||||
}
|
||||
default:
|
||||
w.Header().Set("Content-Type", "text/csv")
|
||||
if err := h.log.StreamCSV(r.Context(), filter, w); err != nil {
|
||||
http.Error(w, "export fehlgeschlagen", http.StatusInternalServerError)
|
||||
}
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,222 @@
|
||||
package audit
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"context"
|
||||
"encoding/csv"
|
||||
"fmt"
|
||||
"net/http"
|
||||
"net/http/httptest"
|
||||
"os"
|
||||
"runtime"
|
||||
"strings"
|
||||
"testing"
|
||||
"time"
|
||||
|
||||
"github.com/jackc/pgx/v5/pgxpool"
|
||||
)
|
||||
|
||||
func setupExportTest(t *testing.T) (*Log, func()) {
|
||||
t.Helper()
|
||||
adminDSN := os.Getenv("TEST_ADMIN_DSN")
|
||||
if adminDSN == "" {
|
||||
t.Skip("TEST_ADMIN_DSN nicht gesetzt, Integrationstest uebersprungen")
|
||||
}
|
||||
ctx := context.Background()
|
||||
|
||||
pool, err := pgxpool.New(ctx, adminDSN)
|
||||
if err != nil {
|
||||
t.Fatalf("pool: %v", err)
|
||||
}
|
||||
if _, err := pool.Exec(ctx, `
|
||||
CREATE TABLE IF NOT EXISTS audit_events (
|
||||
id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
|
||||
occurred_at TIMESTAMPTZ NOT NULL DEFAULT now(),
|
||||
tenant_slug TEXT NOT NULL CHECK (tenant_slug <> ''),
|
||||
actor TEXT NOT NULL CHECK (actor <> ''),
|
||||
action TEXT NOT NULL CHECK (action <> ''),
|
||||
target TEXT NOT NULL,
|
||||
metadata JSONB NOT NULL DEFAULT '{}'::jsonb
|
||||
)`); err != nil {
|
||||
t.Fatalf("schema: %v", err)
|
||||
}
|
||||
|
||||
cleanup := func() { pool.Close() }
|
||||
return NewLog(pool), cleanup
|
||||
}
|
||||
|
||||
// Akzeptanzkriterium 1 + Pruefung 2: Filterkombinationen liefern korrekte
|
||||
// Teilmengen.
|
||||
func TestExport_FilterCombinations(t *testing.T) {
|
||||
log, cleanup := setupExportTest(t)
|
||||
defer cleanup()
|
||||
ctx := context.Background()
|
||||
|
||||
run := fmt.Sprintf("_%d", time.Now().UnixNano())
|
||||
tenantA, tenantB := "test_fa"+run, "test_fb"+run
|
||||
alice, bob := "alice"+run, "bob"+run
|
||||
|
||||
events := []Event{
|
||||
{TenantSlug: tenantA, Actor: alice, Action: "login", Target: "x"},
|
||||
{TenantSlug: tenantA, Actor: bob, Action: "login", Target: "x"},
|
||||
{TenantSlug: tenantA, Actor: alice, Action: "logout", Target: "x"},
|
||||
{TenantSlug: tenantB, Actor: alice, Action: "login", Target: "x"},
|
||||
}
|
||||
for _, e := range events {
|
||||
if err := log.Record(ctx, e); err != nil {
|
||||
t.Fatalf("record: %v", err)
|
||||
}
|
||||
}
|
||||
|
||||
cases := []struct {
|
||||
name string
|
||||
filter Filter
|
||||
wantLen int
|
||||
}{
|
||||
{"nach tenant", Filter{TenantSlug: tenantA}, 3},
|
||||
{"nach tenant+actor", Filter{TenantSlug: tenantA, Actor: alice}, 2},
|
||||
{"nach tenant+actor+action", Filter{TenantSlug: tenantA, Actor: alice, Action: "login"}, 1},
|
||||
{"nach actor ueber beide tenants", Filter{Actor: alice, Action: "login"}, 2},
|
||||
}
|
||||
|
||||
for _, c := range cases {
|
||||
t.Run(c.name, func(t *testing.T) {
|
||||
var buf bytes.Buffer
|
||||
if err := log.StreamCSV(ctx, c.filter, &buf); err != nil {
|
||||
t.Fatalf("stream: %v", err)
|
||||
}
|
||||
rows, err := csv.NewReader(&buf).ReadAll()
|
||||
if err != nil {
|
||||
t.Fatalf("csv parsen: %v", err)
|
||||
}
|
||||
got := len(rows) - 1 // Header abziehen
|
||||
if got != c.wantLen {
|
||||
t.Fatalf("erwartet %d zeilen, habe %d", c.wantLen, got)
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
// Akzeptanzkriterium 1 + Pruefung 2: Zeitraum-Filter.
|
||||
func TestExport_TimeRangeFilter(t *testing.T) {
|
||||
log, cleanup := setupExportTest(t)
|
||||
defer cleanup()
|
||||
ctx := context.Background()
|
||||
|
||||
tenant := fmt.Sprintf("test_tr_%d", time.Now().UnixNano())
|
||||
past := time.Now().Add(-48 * time.Hour)
|
||||
future := time.Now().Add(48 * time.Hour)
|
||||
|
||||
if err := log.Record(ctx, Event{TenantSlug: tenant, Actor: "a", Action: "x", Target: "t", OccurredAt: time.Now()}); err != nil {
|
||||
t.Fatalf("record: %v", err)
|
||||
}
|
||||
|
||||
var buf bytes.Buffer
|
||||
if err := log.StreamCSV(ctx, Filter{TenantSlug: tenant, From: &past, To: &future}, &buf); err != nil {
|
||||
t.Fatalf("stream (innerhalb range): %v", err)
|
||||
}
|
||||
if got := countLines(buf.String()) - 1; got != 1 {
|
||||
t.Fatalf("erwartet 1 eintrag innerhalb des zeitraums, habe %d", got)
|
||||
}
|
||||
|
||||
farPast := time.Now().Add(-96 * time.Hour)
|
||||
buf.Reset()
|
||||
if err := log.StreamCSV(ctx, Filter{TenantSlug: tenant, From: &farPast, To: &past}, &buf); err != nil {
|
||||
t.Fatalf("stream (ausserhalb range): %v", err)
|
||||
}
|
||||
if got := countLines(buf.String()) - 1; got != 0 {
|
||||
t.Fatalf("erwartet 0 eintraege ausserhalb des zeitraums, habe %d", got)
|
||||
}
|
||||
}
|
||||
|
||||
func countLines(s string) int {
|
||||
s = strings.TrimRight(s, "\n")
|
||||
if s == "" {
|
||||
return 0
|
||||
}
|
||||
return len(strings.Split(s, "\n"))
|
||||
}
|
||||
|
||||
// Akzeptanzkriterium 3 + Pruefung 1: Export mit hoher Eintragszahl ohne
|
||||
// uebermaessigen Speicherverbrauch — Stichprobe per runtime.MemStats.
|
||||
func TestExport_StreamsLargeResultWithoutExcessiveMemory(t *testing.T) {
|
||||
log, cleanup := setupExportTest(t)
|
||||
defer cleanup()
|
||||
ctx := context.Background()
|
||||
|
||||
tenant := fmt.Sprintf("test_large_%d", time.Now().UnixNano())
|
||||
const n = 20000
|
||||
for i := 0; i < n; i++ {
|
||||
if err := log.Record(ctx, Event{TenantSlug: tenant, Actor: "bulk", Action: "test.bulk", Target: fmt.Sprintf("obj-%d", i)}); err != nil {
|
||||
t.Fatalf("record %d: %v", i, err)
|
||||
}
|
||||
}
|
||||
|
||||
runtime.GC()
|
||||
var before runtime.MemStats
|
||||
runtime.ReadMemStats(&before)
|
||||
|
||||
lineCount := 0
|
||||
cw := &countingWriter{onWrite: func(p []byte) { lineCount += strings.Count(string(p), "\n") }}
|
||||
if err := log.StreamCSV(ctx, Filter{TenantSlug: tenant}, cw); err != nil {
|
||||
t.Fatalf("stream: %v", err)
|
||||
}
|
||||
|
||||
runtime.GC()
|
||||
var after runtime.MemStats
|
||||
runtime.ReadMemStats(&after)
|
||||
|
||||
if lineCount != n+1 { // +1 Header
|
||||
t.Fatalf("erwartet %d zeilen (inkl. header), habe %d", n+1, lineCount)
|
||||
}
|
||||
|
||||
// Grobe Stichprobe: ein NICHT streamender Export haette hier locker
|
||||
// mehrere MB an einmal gehaltenen Zeilen/Strings erzeugt. Grosszuegige
|
||||
// Schwelle, da Go-Heap-Messungen naturgemaess rauschen.
|
||||
const maxAcceptableGrowth = 3 * 1024 * 1024 // 3 MB
|
||||
growth := int64(after.HeapAlloc) - int64(before.HeapAlloc)
|
||||
t.Logf("heap-wachstum waehrend export von %d zeilen: %d bytes (schwelle: %d)", n, growth, maxAcceptableGrowth)
|
||||
if growth > maxAcceptableGrowth {
|
||||
t.Fatalf("heap ist um %d bytes gewachsen, erwartet unter %d (hinweis auf vollstaendige pufferung statt streaming)", growth, maxAcceptableGrowth)
|
||||
}
|
||||
}
|
||||
|
||||
type countingWriter struct {
|
||||
onWrite func(p []byte)
|
||||
}
|
||||
|
||||
func (w *countingWriter) Write(p []byte) (int, error) {
|
||||
w.onWrite(p)
|
||||
return len(p), nil
|
||||
}
|
||||
|
||||
// Akzeptanzkriterium 2 + Pruefung 3: Zugriff ohne passende Berechtigung wird abgewiesen.
|
||||
func TestExportHandler_RejectsWithoutAuthorization(t *testing.T) {
|
||||
log, cleanup := setupExportTest(t)
|
||||
defer cleanup()
|
||||
|
||||
handler := NewExportHandler(log, func(ctx context.Context, caller string) bool {
|
||||
return caller == "berechtigte-person@example.com"
|
||||
})
|
||||
|
||||
req := httptest.NewRequest(http.MethodGet, "/audit/export?caller=unberechtigt@example.com", nil)
|
||||
rec := httptest.NewRecorder()
|
||||
handler.Export(rec, req)
|
||||
if rec.Code != http.StatusForbidden {
|
||||
t.Fatalf("unberechtigt: status = %d, want 403", rec.Code)
|
||||
}
|
||||
|
||||
reqNoCaller := httptest.NewRequest(http.MethodGet, "/audit/export", nil)
|
||||
recNoCaller := httptest.NewRecorder()
|
||||
handler.Export(recNoCaller, reqNoCaller)
|
||||
if recNoCaller.Code != http.StatusForbidden {
|
||||
t.Fatalf("ohne caller: status = %d, want 403", recNoCaller.Code)
|
||||
}
|
||||
|
||||
reqOK := httptest.NewRequest(http.MethodGet, "/audit/export?caller=berechtigte-person@example.com", nil)
|
||||
recOK := httptest.NewRecorder()
|
||||
handler.Export(recOK, reqOK)
|
||||
if recOK.Code != http.StatusOK {
|
||||
t.Fatalf("berechtigt: status = %d, want 200", recOK.Code)
|
||||
}
|
||||
}
|
||||
@@ -1,136 +0,0 @@
|
||||
package tenant
|
||||
|
||||
import (
|
||||
"container/list"
|
||||
"context"
|
||||
"errors"
|
||||
"fmt"
|
||||
"sync"
|
||||
|
||||
"github.com/jackc/pgx/v5/pgxpool"
|
||||
)
|
||||
|
||||
// ErrMissingTenantContext wird geliefert, wenn keine Tenant-Kennung
|
||||
// uebergeben wurde — es gibt bewusst keinen impliziten Default-Tenant
|
||||
// (TEN-06 Akzeptanzkriterium 3).
|
||||
var ErrMissingTenantContext = errors.New("tenant: kein tenant-kontext angegeben")
|
||||
|
||||
// ErrUnknownTenant wird geliefert, wenn die Tenant-Kennung in der Registry
|
||||
// nicht existiert.
|
||||
var ErrUnknownTenant = errors.New("tenant: unbekannter tenant")
|
||||
|
||||
// Router loest den Tenant-Kontext (Slug, aus dem JWT-Claim von API-05) in
|
||||
// eine wiederverwendbare Verbindung zur richtigen Tenant-Datenbank auf.
|
||||
// Ein LRU-verwalteter Cache begrenzt die Zahl gleichzeitig offener
|
||||
// pgxpool.Pool-Instanzen, damit die Zahl offener Postgres-Verbindungen NICHT
|
||||
// linear mit der Mandantenzahl waechst (Akzeptanzkriterium 2).
|
||||
type Router struct {
|
||||
registry *Registry
|
||||
maxOpen int
|
||||
|
||||
mu sync.Mutex
|
||||
order *list.List // vorne = zuletzt benutzt
|
||||
items map[string]*list.Element // slug -> element mit *routerEntry
|
||||
}
|
||||
|
||||
type routerEntry struct {
|
||||
slug string
|
||||
pool *pgxpool.Pool
|
||||
}
|
||||
|
||||
func NewRouter(registry *Registry, maxOpen int) *Router {
|
||||
if maxOpen < 1 {
|
||||
maxOpen = 1
|
||||
}
|
||||
return &Router{
|
||||
registry: registry,
|
||||
maxOpen: maxOpen,
|
||||
order: list.New(),
|
||||
items: make(map[string]*list.Element),
|
||||
}
|
||||
}
|
||||
|
||||
// Resolve liefert einen wiederverwendeten Pool fuer den angegebenen Tenant.
|
||||
// Ist der Tenant bereits im Cache, wird KEINE neue Verbindung aufgebaut
|
||||
// (Akzeptanzkriterium 2 / Pruefung 3).
|
||||
func (r *Router) Resolve(ctx context.Context, tenantSlug string) (*pgxpool.Pool, error) {
|
||||
if tenantSlug == "" {
|
||||
return nil, ErrMissingTenantContext
|
||||
}
|
||||
|
||||
r.mu.Lock()
|
||||
if el, ok := r.items[tenantSlug]; ok {
|
||||
r.order.MoveToFront(el)
|
||||
pool := el.Value.(*routerEntry).pool
|
||||
r.mu.Unlock()
|
||||
return pool, nil
|
||||
}
|
||||
r.mu.Unlock()
|
||||
|
||||
// Registry-Lookup und Verbindungsaufbau bewusst ausserhalb des Locks,
|
||||
// damit ein langsamer Verbindungsaufbau nicht alle anderen Tenants blockiert.
|
||||
t, err := r.registry.GetBySlug(ctx, tenantSlug)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("%w: %s", ErrUnknownTenant, tenantSlug)
|
||||
}
|
||||
|
||||
pool, err := pgxpool.New(ctx, t.DBDSN)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("verbindung zu tenant %q aufbauen: %w", tenantSlug, err)
|
||||
}
|
||||
|
||||
r.mu.Lock()
|
||||
defer r.mu.Unlock()
|
||||
|
||||
// Zwischen Unlock oben und hier koennte ein paralleler Aufruf denselben
|
||||
// Tenant bereits eingefuegt haben — dann die eigene, ueberzaehlige
|
||||
// Verbindung wieder schliessen und die vorhandene verwenden.
|
||||
if el, ok := r.items[tenantSlug]; ok {
|
||||
r.order.MoveToFront(el)
|
||||
existing := el.Value.(*routerEntry).pool
|
||||
pool.Close()
|
||||
return existing, nil
|
||||
}
|
||||
|
||||
el := r.order.PushFront(&routerEntry{slug: tenantSlug, pool: pool})
|
||||
r.items[tenantSlug] = el
|
||||
|
||||
if r.order.Len() > r.maxOpen {
|
||||
r.evictOldest()
|
||||
}
|
||||
|
||||
return pool, nil
|
||||
}
|
||||
|
||||
// evictOldest schliesst den am laengsten nicht genutzten Pool. Muss mit
|
||||
// gehaltenem r.mu aufgerufen werden.
|
||||
func (r *Router) evictOldest() {
|
||||
oldest := r.order.Back()
|
||||
if oldest == nil {
|
||||
return
|
||||
}
|
||||
entry := oldest.Value.(*routerEntry)
|
||||
r.order.Remove(oldest)
|
||||
delete(r.items, entry.slug)
|
||||
entry.pool.Close()
|
||||
}
|
||||
|
||||
// OpenCount liefert die aktuelle Zahl offen gehaltener Tenant-Pools —
|
||||
// dient Tests/Monitoring, um AC2 nachzuweisen.
|
||||
func (r *Router) OpenCount() int {
|
||||
r.mu.Lock()
|
||||
defer r.mu.Unlock()
|
||||
return r.order.Len()
|
||||
}
|
||||
|
||||
// Close schliesst alle offen gehaltenen Tenant-Pools, z.B. beim
|
||||
// Herunterfahren des Core-Prozesses.
|
||||
func (r *Router) Close() {
|
||||
r.mu.Lock()
|
||||
defer r.mu.Unlock()
|
||||
for el := r.order.Front(); el != nil; el = el.Next() {
|
||||
el.Value.(*routerEntry).pool.Close()
|
||||
}
|
||||
r.order.Init()
|
||||
r.items = make(map[string]*list.Element)
|
||||
}
|
||||
@@ -1,160 +0,0 @@
|
||||
package tenant
|
||||
|
||||
import (
|
||||
"context"
|
||||
"errors"
|
||||
"fmt"
|
||||
"os"
|
||||
"strings"
|
||||
"testing"
|
||||
|
||||
"github.com/jackc/pgx/v5/pgxpool"
|
||||
)
|
||||
|
||||
func newTestRouterSetup(t *testing.T, tenantCount int) (*Router, []Tenant, func()) {
|
||||
t.Helper()
|
||||
adminDSN := os.Getenv("TEST_ADMIN_DSN")
|
||||
if adminDSN == "" {
|
||||
t.Skip("TEST_ADMIN_DSN nicht gesetzt, Integrationstest uebersprungen")
|
||||
}
|
||||
ctx := context.Background()
|
||||
|
||||
adminPool, err := pgxpool.New(ctx, adminDSN)
|
||||
if err != nil {
|
||||
t.Fatalf("admin pool: %v", err)
|
||||
}
|
||||
registryPool, err := pgxpool.New(ctx, adminDSN)
|
||||
if err != nil {
|
||||
t.Fatalf("registry pool: %v", err)
|
||||
}
|
||||
if _, err := registryPool.Exec(ctx, `
|
||||
CREATE TABLE IF NOT EXISTS tenants (
|
||||
id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
|
||||
slug TEXT NOT NULL UNIQUE,
|
||||
name TEXT NOT NULL,
|
||||
db_name TEXT NOT NULL UNIQUE,
|
||||
db_dsn TEXT NOT NULL,
|
||||
status TEXT NOT NULL DEFAULT 'active',
|
||||
created_at TIMESTAMPTZ NOT NULL DEFAULT now()
|
||||
)`); err != nil {
|
||||
t.Fatalf("registry-schema: %v", err)
|
||||
}
|
||||
|
||||
registry := NewRegistry(registryPool)
|
||||
dsnTemplate := strings.Replace(adminDSN, "/postgres?", "/%s?", 1)
|
||||
provisioner := NewProvisioner(adminPool, registry, dsnTemplate)
|
||||
|
||||
var tenants []Tenant
|
||||
var slugs []string
|
||||
for i := 0; i < tenantCount; i++ {
|
||||
slug := fmt.Sprintf("router_t%d", i)
|
||||
slugs = append(slugs, slug)
|
||||
tn, err := provisioner.Provision(ctx, slug, slug)
|
||||
if err != nil {
|
||||
t.Fatalf("provision %s: %v", slug, err)
|
||||
}
|
||||
tenants = append(tenants, tn)
|
||||
}
|
||||
|
||||
router := NewRouter(registry, 2) // klein gewaehlt, um Eviction im Test zu erzwingen
|
||||
|
||||
cleanup := func() {
|
||||
router.Close()
|
||||
for _, slug := range slugs {
|
||||
_, _ = adminPool.Exec(ctx, fmt.Sprintf(`DROP DATABASE IF EXISTS %q`, dbNameForSlug(slug)))
|
||||
}
|
||||
_, _ = registryPool.Exec(ctx, `DELETE FROM tenants WHERE slug = ANY($1)`, slugs)
|
||||
registryPool.Close()
|
||||
adminPool.Close()
|
||||
}
|
||||
return router, tenants, cleanup
|
||||
}
|
||||
|
||||
// Akzeptanzkriterium 1: Verbindung wird zuverlaessig anhand des Tenant-Kontexts aufgeloest.
|
||||
func TestRouter_ResolvesCorrectTenantDatabase(t *testing.T) {
|
||||
router, tenants, cleanup := newTestRouterSetup(t, 2)
|
||||
defer cleanup()
|
||||
ctx := context.Background()
|
||||
|
||||
pool, err := router.Resolve(ctx, tenants[0].Slug)
|
||||
if err != nil {
|
||||
t.Fatalf("resolve: %v", err)
|
||||
}
|
||||
var dbName string
|
||||
if err := pool.QueryRow(ctx, `SELECT current_database()`).Scan(&dbName); err != nil {
|
||||
t.Fatalf("current_database: %v", err)
|
||||
}
|
||||
if dbName != tenants[0].DBName {
|
||||
t.Fatalf("current_database() = %q, want %q", dbName, tenants[0].DBName)
|
||||
}
|
||||
}
|
||||
|
||||
// Akzeptanzkriterium 3 + Pruefung 2: fehlender/unbekannter Tenant-Kontext
|
||||
// wird explizit abgewiesen statt irgendeine Verbindung zu liefern.
|
||||
func TestRouter_RejectsMissingOrUnknownTenant(t *testing.T) {
|
||||
router, _, cleanup := newTestRouterSetup(t, 1)
|
||||
defer cleanup()
|
||||
ctx := context.Background()
|
||||
|
||||
if _, err := router.Resolve(ctx, ""); !errors.Is(err, ErrMissingTenantContext) {
|
||||
t.Fatalf("erwartet ErrMissingTenantContext, habe %v", err)
|
||||
}
|
||||
if _, err := router.Resolve(ctx, "nie-registrierter-slug"); !errors.Is(err, ErrUnknownTenant) {
|
||||
t.Fatalf("erwartet ErrUnknownTenant, habe %v", err)
|
||||
}
|
||||
}
|
||||
|
||||
// Akzeptanzkriterium 2 + Pruefung 3: Verbindungswiederverwendung nachweislich
|
||||
// gemessen — zweiter Resolve-Aufruf liefert exakt denselben Pool, kein
|
||||
// erneuter Verbindungsaufbau.
|
||||
func TestRouter_ReusesConnectionForSameTenant(t *testing.T) {
|
||||
router, tenants, cleanup := newTestRouterSetup(t, 1)
|
||||
defer cleanup()
|
||||
ctx := context.Background()
|
||||
|
||||
first, err := router.Resolve(ctx, tenants[0].Slug)
|
||||
if err != nil {
|
||||
t.Fatalf("resolve 1: %v", err)
|
||||
}
|
||||
second, err := router.Resolve(ctx, tenants[0].Slug)
|
||||
if err != nil {
|
||||
t.Fatalf("resolve 2: %v", err)
|
||||
}
|
||||
if first != second {
|
||||
t.Fatal("erwartet identische pool-instanz bei wiederholtem resolve, habe unterschiedliche")
|
||||
}
|
||||
}
|
||||
|
||||
// Akzeptanzkriterium 2 + Pruefung 1: Lasttest mit mehr simulierten Mandanten
|
||||
// als maxOpen — die Zahl gleichzeitig offener Tenant-Pools bleibt begrenzt
|
||||
// (LRU-Eviction), waechst also NICHT linear mit der Mandantenzahl.
|
||||
func TestRouter_BoundsOpenConnectionsUnderLoad(t *testing.T) {
|
||||
const tenantCount = 6
|
||||
router, tenants, cleanup := newTestRouterSetup(t, tenantCount)
|
||||
defer cleanup()
|
||||
ctx := context.Background()
|
||||
|
||||
for _, tn := range tenants {
|
||||
if _, err := router.Resolve(ctx, tn.Slug); err != nil {
|
||||
t.Fatalf("resolve %s: %v", tn.Slug, err)
|
||||
}
|
||||
if router.OpenCount() > 2 {
|
||||
t.Fatalf("OpenCount() = %d, erwartet <= maxOpen (2) nach jedem Resolve", router.OpenCount())
|
||||
}
|
||||
}
|
||||
|
||||
if router.OpenCount() != 2 {
|
||||
t.Fatalf("erwartet genau maxOpen=2 offene pools nach %d tenants, habe %d", tenantCount, router.OpenCount())
|
||||
}
|
||||
|
||||
// Evictete Tenants sind wieder ganz normal ueber die Registry aufloesbar
|
||||
// (Cache-Miss fuehrt zu neuem, funktionierendem Pool, kein Fehlerzustand).
|
||||
pool, err := router.Resolve(ctx, tenants[0].Slug)
|
||||
if err != nil {
|
||||
t.Fatalf("resolve nach eviction: %v", err)
|
||||
}
|
||||
var one int
|
||||
if err := pool.QueryRow(ctx, `SELECT 1`).Scan(&one); err != nil {
|
||||
t.Fatalf("query nach re-resolve: %v", err)
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1 @@
|
||||
DROP TABLE IF EXISTS audit_events;
|
||||
@@ -0,0 +1,17 @@
|
||||
-- Zentrales Audit-Log-Modell (AUD-01, siehe core-kanban/tickets/AUD-01.md).
|
||||
-- Getrennt vom allgemeinen Anwendungs-Log (Akzeptanzkriterium 2): eigene
|
||||
-- Tabelle, eigenes Paket (internal/audit), kein Log-Framework.
|
||||
-- tenant_slug ist NOT NULL + darf nicht leer sein (Akzeptanzkriterium 2 /
|
||||
-- Pruefung 2) — mandantenuebergreifende Ereignisse nutzen den reservierten
|
||||
-- Wert 'system', niemals NULL oder leeren String.
|
||||
CREATE TABLE audit_events (
|
||||
id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
|
||||
occurred_at TIMESTAMPTZ NOT NULL DEFAULT now(),
|
||||
tenant_slug TEXT NOT NULL CHECK (tenant_slug <> ''),
|
||||
actor TEXT NOT NULL CHECK (actor <> ''),
|
||||
action TEXT NOT NULL CHECK (action <> ''),
|
||||
target TEXT NOT NULL,
|
||||
metadata JSONB NOT NULL DEFAULT '{}'::jsonb
|
||||
);
|
||||
|
||||
CREATE INDEX audit_events_tenant_slug_idx ON audit_events (tenant_slug, occurred_at);
|
||||
Executable
+24
@@ -0,0 +1,24 @@
|
||||
#!/usr/bin/env bash
|
||||
# Setzt die nexarch-Testumgebung zurueck: loescht die geteilte
|
||||
# Registry-Tabelle "tenants" in der postgres-Wartungsdatenbank sowie alle
|
||||
# tenant_*-Datenbanken. Noetig, weil verschiedene Feature-Branches
|
||||
# unterschiedliche Registry-Schemata erwarten, aber dieselbe physische
|
||||
# Postgres-Instanz auf dem Testhost teilen (siehe [[project-nexarch-test-infra]]).
|
||||
#
|
||||
# Aufruf: NEXARCH_TEST_DB_PASSWORD=... ./scripts/reset-test-env.sh
|
||||
set -euo pipefail
|
||||
|
||||
PASS="${NEXARCH_TEST_DB_PASSWORD:?Setze NEXARCH_TEST_DB_PASSWORD vor dem Aufruf}"
|
||||
ROLE="nexarch_test"
|
||||
|
||||
export PGPASSWORD="$PASS"
|
||||
|
||||
psql -h localhost -U "$ROLE" -d postgres -v ON_ERROR_STOP=1 -c "DROP TABLE IF EXISTS tenants CASCADE;"
|
||||
psql -h localhost -U "$ROLE" -d postgres -v ON_ERROR_STOP=1 -c "DROP TABLE IF EXISTS audit_events CASCADE;"
|
||||
|
||||
dbs=$(psql -h localhost -U "$ROLE" -d postgres -tAc "SELECT datname FROM pg_database WHERE datname LIKE 'tenant\_%' ESCAPE '\'")
|
||||
for db in $dbs; do
|
||||
psql -h localhost -U "$ROLE" -d postgres -v ON_ERROR_STOP=1 -c "DROP DATABASE IF EXISTS \"${db}\";"
|
||||
done
|
||||
|
||||
echo "Testumgebung zurueckgesetzt: registry-tabelle + $(echo "$dbs" | grep -c . || true) tenant-datenbank(en) entfernt."
|
||||
Executable
+24
@@ -0,0 +1,24 @@
|
||||
#!/usr/bin/env bash
|
||||
# Ein-Kommando-Pruefung fuer den aktuellen Code-Stand auf dem Testhost:
|
||||
# Registry+Tenant-DBs zuruecksetzen, dann build/vet/test in einem Rutsch.
|
||||
# -p 1 ist Pflicht, da mehrere Pakete dieselbe physische Registry-Tabelle auf
|
||||
# dem Testhost teilen (siehe [[project-nexarch-test-infra]]).
|
||||
#
|
||||
# Aufruf: NEXARCH_TEST_DB_PASSWORD=... ./scripts/run-checks.sh
|
||||
set -euo pipefail
|
||||
|
||||
PASS="${NEXARCH_TEST_DB_PASSWORD:?Setze NEXARCH_TEST_DB_PASSWORD vor dem Aufruf}"
|
||||
cd "$(dirname "$0")/.."
|
||||
|
||||
NEXARCH_TEST_DB_PASSWORD="$PASS" bash scripts/reset-test-env.sh
|
||||
|
||||
export TEST_ADMIN_DSN="postgresql://nexarch_test:${PASS}@localhost:5432/postgres?sslmode=disable"
|
||||
|
||||
echo "== go build =="
|
||||
go build ./...
|
||||
|
||||
echo "== go vet =="
|
||||
go vet ./...
|
||||
|
||||
echo "== go test (-p 1) =="
|
||||
go test ./... -p 1 -count=1
|
||||
Reference in New Issue
Block a user