From 7b932314e069eb851a3d03855a95271258eac982 Mon Sep 17 00:00:00 2001
From: "zhangxu19830126@gmail.com" <zhangxu19830126@gmail.com>
Date: Thu, 8 Feb 2018 14:03:44 +0800
Subject: [PATCH] dev: add multi extract exp support

---
 pkg/proxy/render.go | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/pkg/proxy/render.go b/pkg/proxy/render.go
index 8533bb54..20b70591 100644
--- a/pkg/proxy/render.go
+++ b/pkg/proxy/render.go
@@ -142,7 +142,19 @@ func (rd *render) extract(src jsoniter.Any) map[string]interface{} {
 }
 
 func extractValue(attr *metapb.RenderAttr, src jsoniter.Any, obj map[string]interface{}) {
-	obj[attr.Name] = src.Get(getPaths(attr.ExtractExp)...).GetInterface()
+	exps := strings.Split(attr.ExtractExp, ",")
+
+	if len(exps) == 1 {
+		obj[attr.Name] = src.Get(getPaths(attr.ExtractExp)...).GetInterface()
+		return
+	}
+
+	sub := make(map[string]interface{})
+	obj[attr.Name] = sub
+	for _, exp := range exps {
+		paths := getPaths(exp)
+		sub[paths[len(paths)-1].(string)] = src.Get(paths...).GetInterface()
+	}
 }
 
 func getPaths(attr string) []interface{} {