decode legacy timeouts

The new decoder is more precise, and unpacks the timeout block into a
single map, which ResourceTimeout.ConfigDecode was updated to handle.
We however still need to work with legacy versions of terraform, with
the old decoder.

helper/schema/provider_test.go

@@ -278,7 +278,7 @@ func TestProviderValidate(t *testing.T) {
 	}
 }
 
-func TestProviderDiff_timeoutInvalidType(t *testing.T) {
+func TestProviderDiff_legacyTimeoutType(t *testing.T) {
 	p := &Provider{
 		ResourcesMap: map[string]*Resource{
 			"blah": &Resource{
@@ -308,6 +308,48 @@ func TestProviderDiff_timeoutInvalidType(t *testing.T) {
 		t.Fatalf("err: %s", err)
 	}
 
+	_, err = p.Diff(
+		&terraform.InstanceInfo{
+			Type: "blah",
+		},
+		nil,
+		terraform.NewResourceConfig(ic),
+	)
+	if err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestProviderDiff_invalidTimeoutType(t *testing.T) {
+	p := &Provider{
+		ResourcesMap: map[string]*Resource{
+			"blah": &Resource{
+				Schema: map[string]*Schema{
+					"foo": {
+						Type:     TypeInt,
+						Optional: true,
+					},
+				},
+				Timeouts: &ResourceTimeout{
+					Create: DefaultTimeout(10 * time.Minute),
+				},
+			},
+		},
+	}
+
+	invalidCfg := map[string]interface{}{
+		"foo": 42,
+		"timeouts": []interface{}{
+			map[string]interface{}{
+				"create": "40m",
+			},
+		},
+	}
+	ic, err := config.NewRawConfig(invalidCfg)
+	if err != nil {
+		t.Fatalf("err: %s", err)
+	}
+
 	_, err = p.Diff(
 		&terraform.InstanceInfo{
 			Type: "blah",

helper/schema/resource_timeout.go

@@ -63,7 +63,27 @@ func (t *ResourceTimeout) ConfigDecode(s *Resource, c *terraform.ResourceConfig)
 	}
 
 	if raw, ok := c.Config[TimeoutsConfigKey]; ok {
-		if timeoutValues, ok := raw.(map[string]interface{}); ok {
+		var rawTimeouts []map[string]interface{}
+		switch raw := raw.(type) {
+		case map[string]interface{}:
+			rawTimeouts = append(rawTimeouts, raw)
+		case []map[string]interface{}:
+			rawTimeouts = raw
+		case string:
+			if raw == config.UnknownVariableValue {
+				// Timeout is not defined in the config
+				// Defaults will be used instead
+				return nil
+			} else {
+				log.Printf("[ERROR] Invalid timeout value: %q", raw)
+				return fmt.Errorf("Invalid Timeout value found")
+			}
+		default:
+			log.Printf("[ERROR] Invalid timeout structure: %#v", raw)
+			return fmt.Errorf("Invalid Timeout structure found")
+		}
+
+		for _, timeoutValues := range rawTimeouts {
 			for timeKey, timeValue := range timeoutValues {
 				// validate that we're dealing with the normal CRUD actions
 				var found bool
@@ -108,14 +128,6 @@ func (t *ResourceTimeout) ConfigDecode(s *Resource, c *terraform.ResourceConfig)
 			}
 			return nil
 		}
-		if v, ok := raw.(string); ok && v == config.UnknownVariableValue {
-			// Timeout is not defined in the config
-			// Defaults will be used instead
-			return nil
-		}
-
-		log.Printf("[ERROR] Invalid timeout structure: %T", raw)
-		return fmt.Errorf("Invalid Timeout structure found")
 	}
 
 	return nil

helper/schema/resource_timeout_test.go

@@ -129,6 +129,45 @@ func TestResourceTimeout_ConfigDecode(t *testing.T) {
 	}
 }
 
+func TestResourceTimeout_legacyConfigDecode(t *testing.T) {
+	r := &Resource{
+		Timeouts: &ResourceTimeout{
+			Create: DefaultTimeout(10 * time.Minute),
+			Update: DefaultTimeout(5 * time.Minute),
+		},
+	}
+
+	raw, err := config.NewRawConfig(
+		map[string]interface{}{
+			"foo": "bar",
+			TimeoutsConfigKey: []map[string]interface{}{
+				{
+					"create": "2m",
+					"update": "1m",
+				},
+			},
+		})
+	if err != nil {
+		t.Fatalf("err: %s", err)
+	}
+	c := terraform.NewResourceConfig(raw)
+
+	timeout := &ResourceTimeout{}
+	err = timeout.ConfigDecode(r, c)
+	if err != nil {
+		t.Fatalf("Expected good timeout returned:, %s", err)
+	}
+
+	expected := &ResourceTimeout{
+		Create: DefaultTimeout(2 * time.Minute),
+		Update: DefaultTimeout(1 * time.Minute),
+	}
+
+	if !reflect.DeepEqual(timeout, expected) {
+		t.Fatalf("bad timeout decode.\nExpected:\n%#v\nGot:\n%#v\n", expected, timeout)
+	}
+}
+
 func TestResourceTimeout_DiffEncode_basic(t *testing.T) {
 	cases := []struct {
 		Timeout  *ResourceTimeout