migrate config to v5 (#1560)

* migrate config to v5

* change default version

node/config/migrate.go

@@ -15,7 +15,7 @@ var log = logging.Logger("cfg")
 
 // CurrentVersion is the config version expected by Boost.
 // We need to migrate the config file to this version.
-const CurrentVersion = 4
+const CurrentVersion = 5
 
 type migrateUpFn = func(cfgPath string) (string, error)
 
@@ -24,6 +24,7 @@ var migrations = []migrateUpFn{
 	v1Tov2, // index 1 => version 2
 	v2Tov3, // index 2 => version 3
 	v3Tov4, // index 3 => version 4
+	v4Tov5, // index 4 => version 5
 }
 
 // This struct is used to get the config file version

node/config/v4_to_v5.go

@@ -0,0 +1,28 @@
+package config
+
+import (
+	"fmt"
+)
+
+// Migrate from config version 4 to version 5
+func v4Tov5(cfgPath string) (string, error) {
+	cfg, err := FromFile(cfgPath, DefaultBoost())
+	if err != nil {
+		return "", fmt.Errorf("parsing config file %s: %w", cfgPath, err)
+	}
+
+	boostCfg, ok := cfg.(*Boost)
+	if !ok {
+		return "", fmt.Errorf("unexpected config type %T: expected *config.Boost", cfg)
+	}
+
+	// Update the Boost config version
+	boostCfg.ConfigVersion = 5
+
+	bz, err := ConfigUpdate(boostCfg, DefaultBoost(), true, false)
+	if err != nil {
+		return "", fmt.Errorf("applying configuration: %w", err)
+	}
+
+	return string(bz), nil
+}