From 5ee75e2fa5875af79830c04a87443a28b1c448df Mon Sep 17 00:00:00 2001
From: Alex Dadgar <alex.dadgar@gmail.com>
Date: Tue, 23 Feb 2016 10:33:58 -0800
Subject: [PATCH] Limit the set of downloaders

---
 client/getter/getter.go | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/client/getter/getter.go b/client/getter/getter.go
index 91fe4fed5da..7dc1b7bd52a 100644
--- a/client/getter/getter.go
+++ b/client/getter/getter.go
@@ -19,6 +19,9 @@ var (
 	// and the lock is used to guard access to it.
 	getters map[string]gg.Getter
 	lock    sync.Mutex
+
+	// supported is the set of download schemes supported by Nomad
+	supported = []string{"http", "https", "s3"}
 )
 
 // getClient returns a client that is suitable for Nomad.
@@ -28,12 +31,12 @@ func getClient(src, dst string) *gg.Client {
 
 	// Return the pre-initialized client
 	if getters == nil {
-		getters = make(map[string]gg.Getter, len(gg.Getters))
-		for k, v := range gg.Getters {
-			getters[k] = v
+		getters = make(map[string]gg.Getter, len(supported))
+		for _, getter := range supported {
+			if impl, ok := gg.Getters[getter]; ok {
+				getters[getter] = impl
+			}
 		}
-
-		getters["file"] = &gg.FileGetter{Copy: true}
 	}
 
 	return &gg.Client{