chore: move the go code into a subfolder

apps/api/cmd/mirror/mirror.go

@@ -0,0 +1,99 @@
+package mirror
+
+import (
+	"bytes"
+	_ "embed"
+	"strings"
+
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+	"github.com/zitadel/logging"
+
+	"github.com/zitadel/zitadel/cmd/key"
+)
+
+var (
+	instanceIDs   []string
+	isSystem      bool
+	shouldReplace bool
+)
+
+func New(configFiles *[]string) *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "mirror",
+		Short: "mirrors all data of ZITADEL from one database to another",
+		Long: `mirrors all data of ZITADEL from one database to another
+ZITADEL needs to be initialized and set up with --for-mirror
+
+The command does mirror all data needed and recomputes the projections.
+For more details call the help functions of the sub commands.
+
+Order of execution:
+1. mirror system tables
+2. mirror auth tables
+3. mirror event store tables
+4. recompute projections
+5. verify`,
+		PersistentPreRun: func(cmd *cobra.Command, args []string) {
+			err := viper.MergeConfig(bytes.NewBuffer(defaultConfig))
+			logging.OnError(err).Fatal("unable to read default config")
+
+			for _, file := range *configFiles {
+				viper.SetConfigFile(file)
+				err := viper.MergeInConfig()
+				logging.WithFields("file", file).OnError(err).Warn("unable to read config file")
+			}
+		},
+		Run: func(cmd *cobra.Command, args []string) {
+			config := mustNewMigrationConfig(viper.GetViper())
+			projectionConfig := mustNewProjectionsConfig(viper.GetViper())
+
+			masterKey, err := key.MasterKey(cmd)
+			logging.OnError(err).Fatal("unable to read master key")
+
+			copySystem(cmd.Context(), config)
+			copyAuth(cmd.Context(), config)
+			copyEventstore(cmd.Context(), config)
+
+			projections(cmd.Context(), projectionConfig, masterKey)
+		},
+	}
+
+	mirrorFlags(cmd)
+	cmd.Flags().BoolVar(&shouldIgnorePrevious, "ignore-previous", false, "ignores previous migrations of the events table")
+	cmd.Flags().BoolVar(&shouldReplace, "replace", false, `replaces all data of the following tables for the provided instances or all if the "--system"-flag is set:
+* system.assets
+* auth.auth_requests
+* eventstore.unique_constraints
+The flag should be provided if you want to execute the mirror command multiple times so that the static data are also mirrored to prevent inconsistent states.`)
+	migrateProjectionsFlags(cmd)
+
+	cmd.AddCommand(
+		eventstoreCmd(),
+		systemCmd(),
+		projectionsCmd(),
+		authCmd(),
+		verifyCmd(),
+	)
+
+	return cmd
+}
+
+func mirrorFlags(cmd *cobra.Command) {
+	cmd.PersistentFlags().StringSliceVar(&instanceIDs, "instance", nil, "id or comma separated ids of the instance(s) to migrate. Either this or the `--system`-flag must be set. Make sure to always use the same flag if you execute the command multiple times.")
+	cmd.PersistentFlags().BoolVar(&isSystem, "system", false, "migrates the whole system. Either this or the `--instance`-flag must be set. Make sure to always use the same flag if you execute the command multiple times.")
+	cmd.MarkFlagsOneRequired("system", "instance")
+	cmd.MarkFlagsMutuallyExclusive("system", "instance")
+}
+
+func instanceClause() string {
+	if isSystem {
+		return "WHERE instance_id <> ''"
+	}
+	for i := range instanceIDs {
+		instanceIDs[i] = "'" + instanceIDs[i] + "'"
+	}
+
+	// COPY does not allow parameters so we need to set them directly
+	return "WHERE instance_id IN (" + strings.Join(instanceIDs, ", ") + ")"
+}