From cd44538901217b9e21fb59ba1ceded4926894320 Mon Sep 17 00:00:00 2001
From: Solomon Hykes <solomon@docker.com>
Date: Mon, 24 Mar 2014 18:16:27 -0700
Subject: [PATCH] beam/data: convenience Message.Get

Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
---
 beam/data/message.go | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/beam/data/message.go b/beam/data/message.go
index 382308f..b35d880 100644
--- a/beam/data/message.go
+++ b/beam/data/message.go
@@ -42,6 +42,18 @@ func (m Message) Del(k string) Message {
 	return Message(Encode(data))
 }
 
+func (m Message) Get(k string) []string {
+	data, err := Decode(string(m))
+	if err != nil {
+		return nil
+	}
+	v, exists := data[k]
+	if !exists {
+		return nil
+	}
+	return v
+}
+
 func (m Message) String() string {
 	return string(m)
 }