migrate config to v7

Author: LexLuthr

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 = 6
+const CurrentVersion = 7
 
 type migrateUpFn = func(cfgPath string) (string, error)
 
@@ -26,6 +26,7 @@ var migrations = []migrateUpFn{
 	v3Tov4, // index 3 => version 4
 	v4Tov5, // index 4 => version 5
 	v5Tov6, // index 5 => version 6
+	v6Tov7, // index 6 => version 7
 }
 
 // This struct is used to get the config file version

node/config/v6_to_v7.go

@@ -0,0 +1,28 @@
+package config
+
+import (
+	"fmt"
+)
+
+// Migrate from config version 6 to version 7
+func v6Tov7(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 = 7
+
+	bz, err := ConfigUpdate(boostCfg, DefaultBoost(), true, false)
+	if err != nil {
+		return "", fmt.Errorf("applying configuration: %w", err)
+	}
+
+	return string(bz), nil
+}