From f048326300fc1d0eb778c96d25ad21314f35c998 Mon Sep 17 00:00:00 2001
From: Clint Shryock <clint@ctshryock.com>
Date: Tue, 22 Sep 2015 14:23:48 -0500
Subject: [PATCH] Rework client/fingerprint/fingerprint.go to use a slice and
 enforce ordering

---
 client/fingerprint/fingerprint.go | 32 ++++++++++++++++++++++---------
 1 file changed, 23 insertions(+), 9 deletions(-)

diff --git a/client/fingerprint/fingerprint.go b/client/fingerprint/fingerprint.go
index 3a4587105..b87c0d9db 100644
--- a/client/fingerprint/fingerprint.go
+++ b/client/fingerprint/fingerprint.go
@@ -8,21 +8,35 @@ import (
 	"github.com/hashicorp/nomad/nomad/structs"
 )
 
-// BuiltinFingerprints contains the built in registered fingerprints
-// which are available
-var BuiltinFingerprints = map[string]Factory{
-	"arch":    NewArchFingerprint,
-	"cpu":     NewCPUFingerprint,
-	"host":    NewHostFingerprint,
-	"memory":  NewMemoryFingerprint,
-	"storage": NewStorageFingerprint,
+// BuiltinFingerprints is a slice containing the key names of all regestered
+// fingerprints available, to provided an ordered iteration
+var BuiltinFingerprints = []string{
+	"arch",
+	"cpu",
+	"host",
+	"memory",
+	"storage",
+	"unix_network",
+	"aws_network",
+}
+
+// builtinFingerprintMap contains the built in registered fingerprints
+// which are available, corresponding to a key found in BuiltinFingerprints
+var builtinFingerprintMap = map[string]Factory{
+	"arch":         NewArchFingerprint,
+	"cpu":          NewCPUFingerprint,
+	"host":         NewHostFingerprint,
+	"memory":       NewMemoryFingerprint,
+	"storage":      NewStorageFingerprint,
+	"unix_network": NewUnixNetworkFingerprinter,
+	"aws_network":  NewAWSNetworkFingerprinter,
 }
 
 // NewFingerprint is used to instantiate and return a new fingerprint
 // given the name and a logger
 func NewFingerprint(name string, logger *log.Logger) (Fingerprint, error) {
 	// Lookup the factory function
-	factory, ok := BuiltinFingerprints[name]
+	factory, ok := builtinFingerprintMap[name]
 	if !ok {
 		return nil, fmt.Errorf("unknown fingerprint '%s'", name)
 	}