Merge pull request #2506 from hashicorp/b-orphan-hook

terraform: orphans should call post-apply hook [GH-1938]

command/counthookaction_string.go

@@ -0,0 +1,16 @@
+// generated by stringer -type=countHookAction hook_count_action.go; DO NOT EDIT
+
+package command
+
+import "fmt"
+
+const _countHookAction_name = "countHookActionAddcountHookActionChangecountHookActionRemove"
+
+var _countHookAction_index = [...]uint8{0, 18, 39, 60}
+
+func (i countHookAction) String() string {
+	if i >= countHookAction(len(_countHookAction_index)-1) {
+		return fmt.Sprintf("countHookAction(%d)", i)
+	}
+	return _countHookAction_name[_countHookAction_index[i]:_countHookAction_index[i+1]]
+}

command/hook_count.go

@@ -24,14 +24,6 @@ type CountHook struct {
 	terraform.NilHook
 }
 
-type countHookAction byte
-
-const (
-	countHookActionAdd countHookAction = iota
-	countHookActionChange
-	countHookActionRemove
-)
-
 func (h *CountHook) Reset() {
 	h.Lock()
 	defer h.Unlock()

command/hook_count_action.go

@@ -0,0 +1,11 @@
+package command
+
+//go:generate stringer -type=countHookAction hook_count_action.go
+
+type countHookAction byte
+
+const (
+	countHookActionAdd countHookAction = iota
+	countHookActionChange
+	countHookActionRemove
+)

terraform/context_test.go

@@ -5889,6 +5889,57 @@ func TestContext2Apply_hook(t *testing.T) {
 	}
 }
 
+func TestContext2Apply_hookOrphan(t *testing.T) {
+	m := testModule(t, "apply-blank")
+	h := new(MockHook)
+	p := testProvider("aws")
+	p.ApplyFn = testApplyFn
+	p.DiffFn = testDiffFn
+
+	state := &State{
+		Modules: []*ModuleState{
+			&ModuleState{
+				Path: rootModulePath,
+				Resources: map[string]*ResourceState{
+					"aws_instance.bar": &ResourceState{
+						Type: "aws_instance",
+						Primary: &InstanceState{
+							ID: "bar",
+						},
+					},
+				},
+			},
+		},
+	}
+
+	ctx := testContext2(t, &ContextOpts{
+		Module: m,
+		State:  state,
+		Hooks:  []Hook{h},
+		Providers: map[string]ResourceProviderFactory{
+			"aws": testProviderFuncFixed(p),
+		},
+	})
+
+	if _, err := ctx.Plan(); err != nil {
+		t.Fatalf("err: %s", err)
+	}
+
+	if _, err := ctx.Apply(); err != nil {
+		t.Fatalf("err: %s", err)
+	}
+
+	if !h.PreApplyCalled {
+		t.Fatal("should be called")
+	}
+	if !h.PostApplyCalled {
+		t.Fatal("should be called")
+	}
+	if !h.PostStateUpdateCalled {
+		t.Fatalf("should call post state update")
+	}
+}
+
 func TestContext2Apply_idAttr(t *testing.T) {
 	m := testModule(t, "apply-idattr")
 	p := testProvider("aws")

terraform/test-fixtures/apply-blank/main.tf

@@ -0,0 +1 @@
+// Nothing!

terraform/transform_orphan.go

@@ -256,6 +256,7 @@ func (n *graphNodeOrphanResource) EvalTree() EvalNode {
 	})
 
 	// Apply
+	var err error
 	seq.Nodes = append(seq.Nodes, &EvalOpFilter{
 		Ops: []walkOperation{walkApply},
 		Node: &EvalSequence{
@@ -278,6 +279,7 @@ func (n *graphNodeOrphanResource) EvalTree() EvalNode {
 					Diff:     &diff,
 					Provider: &provider,
 					Output:   &state,
+					Error:    &err,
 				},
 				&EvalWriteState{
 					Name:         n.ResourceName,
@@ -286,6 +288,11 @@ func (n *graphNodeOrphanResource) EvalTree() EvalNode {
 					Dependencies: n.DependentOn(),
 					State:        &state,
 				},
+				&EvalApplyPost{
+					Info:  info,
+					State: &state,
+					Error: &err,
+				},
 				&EvalUpdateStateHook{},
 			},
 		},