add ob configserver (#943)

tools/ob-configserver/lib/codec/json.go

@@ -0,0 +1,26 @@
+/**
+ * Copyright (c) 2021 OceanBase
+ * OceanBase CE is licensed under Mulan PubL v2.
+ * You can use this software according to the terms and conditions of the Mulan PubL v2.
+ * You may obtain a copy of Mulan PubL v2 at:
+ *          http://license.coscl.org.cn/MulanPubL-2.0
+ * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+ * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+ * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+ * See the Mulan PubL v2 for more details.
+ */
+
+package codec
+
+import (
+	"bytes"
+	"encoding/json"
+)
+
+func MarshalToJsonString(t interface{}) (string, error) {
+	bf := bytes.NewBufferString("")
+	jsonEncoder := json.NewEncoder(bf)
+	jsonEncoder.SetEscapeHTML(false)
+	err := jsonEncoder.Encode(t)
+	return bf.String(), err
+}