From 904d06dffe96080e25245d1e2b98684286a73bb1 Mon Sep 17 00:00:00 2001
From: "jackdaw@loafle.com" <huidragon@gmail.com>
Date: Fri, 14 Apr 2017 17:14:42 +0900
Subject: [PATCH] .

---
 observer/const.go | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 observer/const.go

diff --git a/observer/const.go b/observer/const.go
new file mode 100644
index 0000000..e0b5faa
--- /dev/null
+++ b/observer/const.go
@@ -0,0 +1,15 @@
+package observer
+
+import "strconv"
+
+type KEY int
+func (k KEY) String() string {
+	return strconv.Itoa(int(k))
+}
+
+const (
+	ADD_CRAWLER = KEY(iota)
+	REMOVE_CRAWLER
+)
+
+