feat: cluster key rate limit enhancement (#1036)

plugins/wasm-go/extensions/cluster-key-rate-limit/utils.go

@@ -43,3 +43,17 @@ func reconvertHeaders(hs map[string][]string) [][2]string {
 	})
 	return ret
 }
+
+// extractCookieValueByKey 从cookie中提取key对应的value
+func extractCookieValueByKey(cookie string, key string) (value string) {
+	pairs := strings.Split(cookie, ";")
+	for _, pair := range pairs {
+		pair = strings.TrimSpace(pair)
+		kv := strings.Split(pair, "=")
+		if kv[0] == key {
+			value = kv[1]
+			break
+		}
+	}
+	return value
+}