chore: move the go code into a subfolder

apps/api/cmd/mirror/auth.go

@@ -0,0 +1,95 @@
+package mirror
+
+import (
+	"context"
+	_ "embed"
+	"io"
+	"strconv"
+	"time"
+
+	"github.com/jackc/pgx/v5/stdlib"
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+	"github.com/zitadel/logging"
+
+	"github.com/zitadel/zitadel/internal/database"
+)
+
+func authCmd() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "auth",
+		Short: "mirrors the auth requests table from one database to another",
+		Long: `mirrors the auth requests table from one database to another
+ZITADEL needs to be initialized and set up with the --for-mirror flag
+Only auth requests are mirrored`,
+		Run: func(cmd *cobra.Command, args []string) {
+			config := mustNewMigrationConfig(viper.GetViper())
+			copyAuth(cmd.Context(), config)
+		},
+	}
+
+	cmd.Flags().BoolVar(&shouldReplace, "replace", false, "allow delete auth requests of defined instances before copy")
+
+	return cmd
+}
+
+func copyAuth(ctx context.Context, config *Migration) {
+	sourceClient, err := database.Connect(config.Source, false)
+	logging.OnError(err).Fatal("unable to connect to source database")
+	defer sourceClient.Close()
+
+	destClient, err := database.Connect(config.Destination, false)
+	logging.OnError(err).Fatal("unable to connect to destination database")
+	defer destClient.Close()
+
+	copyAuthRequests(ctx, sourceClient, destClient, config.MaxAuthRequestAge)
+}
+
+func copyAuthRequests(ctx context.Context, source, dest *database.DB, maxAuthRequestAge time.Duration) {
+	start := time.Now()
+
+	logging.Info("creating index on auth.auth_requests.change_date to speed up copy in source database")
+	_, err := source.ExecContext(ctx, "CREATE INDEX CONCURRENTLY IF NOT EXISTS auth_requests_change_date ON auth.auth_requests (change_date)")
+	logging.OnError(err).Fatal("unable to create index on auth.auth_requests.change_date")
+
+	sourceConn, err := source.Conn(ctx)
+	logging.OnError(err).Fatal("unable to acquire connection")
+	defer sourceConn.Close()
+
+	r, w := io.Pipe()
+	errs := make(chan error, 1)
+
+	go func() {
+		err = sourceConn.Raw(func(driverConn any) error {
+			conn := driverConn.(*stdlib.Conn).Conn()
+			_, err := conn.PgConn().CopyTo(ctx, w, "COPY (SELECT id, regexp_replace(request::TEXT, '\\\\u0000', '', 'g')::JSON request, code, request_type, creation_date, change_date, instance_id FROM auth.auth_requests "+instanceClause()+" AND change_date > NOW() - INTERVAL '"+strconv.FormatFloat(maxAuthRequestAge.Seconds(), 'f', -1, 64)+" seconds') TO STDOUT")
+			w.Close()
+			return err
+		})
+		errs <- err
+	}()
+
+	destConn, err := dest.Conn(ctx)
+	logging.OnError(err).Fatal("unable to acquire connection")
+	defer destConn.Close()
+
+	var affected int64
+	err = destConn.Raw(func(driverConn any) error {
+		conn := driverConn.(*stdlib.Conn).Conn()
+
+		if shouldReplace {
+			_, err := conn.Exec(ctx, "DELETE FROM auth.auth_requests "+instanceClause())
+			if err != nil {
+				return err
+			}
+		}
+
+		tag, err := conn.PgConn().CopyFrom(ctx, r, "COPY auth.auth_requests FROM STDIN")
+		affected = tag.RowsAffected()
+
+		return err
+	})
+	logging.OnError(err).Fatal("unable to copy auth requests to destination")
+	logging.OnError(<-errs).Fatal("unable to copy auth requests from source")
+	logging.WithFields("took", time.Since(start), "count", affected).Info("auth requests migrated")
+}