From f398708be21ec7423cc2d72f59a05b2f65a6fd59 Mon Sep 17 00:00:00 2001
From: Armon Dadgar <armon.dadgar@gmail.com>
Date: Mon, 22 Sep 2014 16:15:15 -0700
Subject: [PATCH] terraform: Adding flag for CreateBeforeDestroy

---
 terraform/graph.go      | 3 +++
 terraform/graph_test.go | 6 ++++++
 terraform/resource.go   | 1 +
 3 files changed, 10 insertions(+)

diff --git a/terraform/graph.go b/terraform/graph.go
index f375b1f4bb..9e766d4233 100644
--- a/terraform/graph.go
+++ b/terraform/graph.go
@@ -557,6 +557,9 @@ func graphAddDiff(g *depgraph.Graph, d *ModuleDiff) error {
 					Target: newN,
 				})
 
+				// Set the CreateBeforeDestroy flag on the old noun
+				rn.Resource.Flags |= FlagCreateBeforeDestroy
+
 			} else {
 				dep := &depgraph.Dependency{
 					Name:   newN.Name,
diff --git a/terraform/graph_test.go b/terraform/graph_test.go
index 710fb3417f..d52b3ea18f 100644
--- a/terraform/graph_test.go
+++ b/terraform/graph_test.go
@@ -704,6 +704,12 @@ func TestGraphAddDiff_createBeforeDestroy(t *testing.T) {
 		t.Fatalf("bad:\n\n%s\n\nexpected:\n\n%s", actual, expected)
 	}
 
+	// Verify the flag is set
+	r := g.Noun("aws_instance.bar")
+	if r.Meta.(*GraphNodeResource).Resource.Flags&FlagCreateBeforeDestroy == 0 {
+		t.Fatalf("missing FlagCreateBeforeDestroy")
+	}
+
 	// Verify that our original structure has not been modified
 	diffHash2 := checksumStruct(t, diff)
 	if diffHash != diffHash2 {
diff --git a/terraform/resource.go b/terraform/resource.go
index 0df27524a3..cd1e86bb11 100644
--- a/terraform/resource.go
+++ b/terraform/resource.go
@@ -47,6 +47,7 @@ const (
 	FlagTainted
 	FlagOrphan
 	FlagHasTainted
+	FlagCreateBeforeDestroy
 )
 
 // InstanceInfo is used to hold information about the instance and/or