From d6f2e4d430e0a87908dc9499067c7a39467f6f77 Mon Sep 17 00:00:00 2001
From: kongfei605 <kongfei605@gmail.com>
Date: Fri, 16 Jun 2023 18:27:52 +0800
Subject: [PATCH] Appdynamics update (#544)

* add labels for appdynamics

* update configure for appdynamics

* snakecase update
---
 conf/input.appdynamics/app.toml |  2 +-
 pkg/stringx/strx.go             | 12 +++++++++---
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/conf/input.appdynamics/app.toml b/conf/input.appdynamics/app.toml
index d4c61e9b..eedb65eb 100644
--- a/conf/input.appdynamics/app.toml
+++ b/conf/input.appdynamics/app.toml
@@ -9,7 +9,7 @@
 # # 指定url_vars中哪些key 作为最终的label附加
 # url_var_label_keys= []
 
-# #从url中提取变量 
+# #从url中提取变量
 # url_label_key="instance"
 # url_label_value="{{.Host}}"
 # #自定义 http header
diff --git a/pkg/stringx/strx.go b/pkg/stringx/strx.go
index 10d8c260..2997d990 100644
--- a/pkg/stringx/strx.go
+++ b/pkg/stringx/strx.go
@@ -13,9 +13,15 @@ func SnakeCase(in string) string {
 		if runes[i] == '.' {
 			continue
 		}
-		if i > 0 && unicode.IsUpper(runes[i]) && ((i+1 < length && unicode.IsLower(runes[i+1])) || unicode.IsLower(runes[i-1])) {
-			if runes[i-1] != '_' {
-				out = append(out, '_')
+		if i > 0 {
+			if (runes[i] == '_' && runes[i-1] == '_') ||
+				(i == length-1 && runes[i] == '_') {
+				continue
+			}
+			if unicode.IsUpper(runes[i]) && ((i+1 < length && unicode.IsLower(runes[i+1])) || unicode.IsLower(runes[i-1])) {
+				if runes[i-1] != '_' {
+					out = append(out, '_')
+				}
 			}
 		}
 		out = append(out, unicode.ToLower(runes[i]))