From 691db584780a735a64e09309b1ade9ffdeb4a3a0 Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <mitchell.hashimoto@gmail.com>
Date: Thu, 12 Feb 2015 20:03:44 -0800
Subject: [PATCH] terraform: apply for orphans

---
 terraform/context_test.go     |  6 +++---
 terraform/eval_diff.go        | 14 ++++++++++++++
 terraform/transform_orphan.go | 35 +++++++++++++++++++++++++++++++++++
 3 files changed, 52 insertions(+), 3 deletions(-)

diff --git a/terraform/context_test.go b/terraform/context_test.go
index c097f1d5d5..6c3917f2ab 100644
--- a/terraform/context_test.go
+++ b/terraform/context_test.go
@@ -2948,8 +2948,7 @@ func TestContext2Apply_compute(t *testing.T) {
 	}
 }
 
-/*
-func TestContextApply_countDecrease(t *testing.T) {
+func TestContext2Apply_countDecrease(t *testing.T) {
 	m := testModule(t, "apply-count-dec")
 	p := testProvider("aws")
 	p.DiffFn = testDiffFn
@@ -2992,7 +2991,7 @@ func TestContextApply_countDecrease(t *testing.T) {
 			},
 		},
 	}
-	ctx := testContext(t, &ContextOpts{
+	ctx := testContext2(t, &ContextOpts{
 		Module: m,
 		Providers: map[string]ResourceProviderFactory{
 			"aws": testProviderFuncFixed(p),
@@ -3016,6 +3015,7 @@ func TestContextApply_countDecrease(t *testing.T) {
 	}
 }
 
+/*
 func TestContextApply_countDecreaseToOne(t *testing.T) {
 	m := testModule(t, "apply-count-dec-one")
 	p := testProvider("aws")
diff --git a/terraform/eval_diff.go b/terraform/eval_diff.go
index 3ec842567d..4fab4c2d8d 100644
--- a/terraform/eval_diff.go
+++ b/terraform/eval_diff.go
@@ -2,6 +2,7 @@ package terraform
 
 import (
 	"fmt"
+	"log"
 )
 
 // EvalCompareDiff is an EvalNode implementation that compares two diffs
@@ -20,7 +21,20 @@ func (n *EvalCompareDiff) Eval(
 	ctx EvalContext, args []interface{}) (interface{}, error) {
 	one, two := *n.One, *n.Two
 
+	// If either are nil, let them be empty
+	if one == nil {
+		one = new(InstanceDiff)
+		one.init()
+	}
+	if two == nil {
+		two = new(InstanceDiff)
+		two.init()
+	}
+
 	if !one.Same(two) {
+		log.Printf("[ERROR] %s: diff's didn't match", n.Info.Id)
+		log.Printf("[ERROR] %s: diff one: %#v", n.Info.Id, one)
+		log.Printf("[ERROR] %s: diff two: %#v", n.Info.Id, two)
 		return nil, fmt.Errorf(
 			"%s: diffs didn't match during apply. This is a bug with "+
 				"Terraform and should be reported.", n.Info.Id)
diff --git a/terraform/transform_orphan.go b/terraform/transform_orphan.go
index 6d446f41b6..e1c1f8a1e9 100644
--- a/terraform/transform_orphan.go
+++ b/terraform/transform_orphan.go
@@ -223,6 +223,41 @@ func (n *graphNodeOrphanResource) EvalTree() EvalNode {
 		},
 	})
 
+	// Apply
+	var provider ResourceProvider
+	seq.Nodes = append(seq.Nodes, &EvalOpFilter{
+		Ops: []walkOperation{walkApply},
+		Node: &EvalSequence{
+			Nodes: []EvalNode{
+				&EvalReadDiff{
+					Name: n.ResourceName,
+					Diff: &diff,
+				},
+				&EvalGetProvider{
+					Name:   n.ProvidedBy()[0],
+					Output: &provider,
+				},
+				&EvalReadState{
+					Name:   n.ResourceName,
+					Output: &state,
+				},
+				&EvalApply{
+					Info:     info,
+					State:    &state,
+					Diff:     &diff,
+					Provider: &provider,
+					Output:   &state,
+				},
+				&EvalWriteState{
+					Name:         n.ResourceName,
+					ResourceType: n.ResourceType,
+					Dependencies: n.DependentOn(),
+					State:        &state,
+				},
+			},
+		},
+	})
+
 	return seq
 }