refactor(securejsondata): extract to class

Extract from pluginsettings class so that the
securejsondata type can be used in the other
classes. Encrypt and decrypt functions
extracted too.

pkg/components/securejsondata/securejsondata.go

+package securejsondata
+
+import (
+	"github.com/grafana/grafana/pkg/setting"
+	"github.com/grafana/grafana/pkg/util"
+)
+
+type SecureJsonData map[string][]byte
+
+func (s SecureJsonData) Decrypt() map[string]string {
+	decrypted := make(map[string]string)
+	for key, data := range s {
+		decrypted[key] = string(util.Decrypt(data, setting.SecretKey))
+	}
+	return decrypted
+}
+
+func GetEncryptedJsonData(sjd map[string]string) SecureJsonData {
+	encrypted := make(SecureJsonData)
+	for key, data := range sjd {
+		encrypted[key] = util.Encrypt([]byte(data), setting.SecretKey)
+	}
+	return encrypted
+}

pkg/models/plugin_settings.go

@@ -4,8 +4,7 @@ import (
 	"errors"
 	"time"
 
-	"github.com/grafana/grafana/pkg/setting"
-	"github.com/grafana/grafana/pkg/util"
+	"github.com/grafana/grafana/pkg/components/securejsondata"
 )
 
 var (
@@ -19,23 +18,13 @@ type PluginSetting struct {
 	Enabled        bool
 	Pinned         bool
 	JsonData       map[string]interface{}
-	SecureJsonData SecureJsonData
+	SecureJsonData securejsondata.SecureJsonData
 	PluginVersion  string
 
 	Created time.Time
 	Updated time.Time
 }
 
-type SecureJsonData map[string][]byte
-
-func (s SecureJsonData) Decrypt() map[string]string {
-	decrypted := make(map[string]string)
-	for key, data := range s {
-		decrypted[key] = string(util.Decrypt(data, setting.SecretKey))
-	}
-	return decrypted
-}
-
 // ----------------------
 // COMMANDS
 
@@ -58,12 +47,8 @@ type UpdatePluginSettingVersionCmd struct {
 	OrgId         int64  `json:"-"`
 }
 
-func (cmd *UpdatePluginSettingCmd) GetEncryptedJsonData() SecureJsonData {
-	encrypted := make(SecureJsonData)
-	for key, data := range cmd.SecureJsonData {
-		encrypted[key] = util.Encrypt([]byte(data), setting.SecretKey)
-	}
-	return encrypted
+func (cmd *UpdatePluginSettingCmd) GetEncryptedJsonData() securejsondata.SecureJsonData {
+	return securejsondata.GetEncryptedJsonData(cmd.SecureJsonData)
 }
 
 // ---------------------