providers/aws: use new diff package

builtin/providers/aws/diff.go

@@ -0,0 +1,33 @@
+package aws
+
+import (
+	"github.com/hashicorp/terraform/diff"
+)
+
+var diffBuilder *diff.LazyResourceMap
+
+func init() {
+	diffBuilder = &diff.LazyResourceMap{
+		Resources: map[string]diff.ResourceBuilderFactory{
+			"aws_instance": diffBuilder_aws_instance,
+		},
+	}
+}
+
+func diffBuilder_aws_instance() *diff.ResourceBuilder {
+	return &diff.ResourceBuilder{
+		CreateComputedAttrs: []string{
+			"public_dns",
+			"public_ip",
+			"private_dns",
+			"private_ip",
+		},
+
+		RequiresNewAttrs: []string{
+			"ami",
+			"availability_zone",
+			"instance_type",
+			"region",
+		},
+	}
+}

builtin/providers/aws/resource_provider.go

@@ -23,33 +23,7 @@ func (p *ResourceProvider) Configure(*terraform.ResourceConfig) error {
 func (p *ResourceProvider) Diff(
 	s *terraform.ResourceState,
 	c *terraform.ResourceConfig) (*terraform.ResourceDiff, error) {
-	diffMap.CreateAttrs([]string{
+	return nil, nil
-		"ami",
-		"availability_zone",
-		"instance_type",
-		"region",
-	})
-	diffMap.CreateComputedAttrs([]string{
-		"id",
-		"public_dns",
-		"public_ip",
-		"private_dns",
-		"private_ip",
-	})
-
-	return &terraform.ResourceDiff{
-		Attributes: map[string]*terraform.ResourceAttrDiff{
-			"id": &terraform.ResourceAttrDiff{
-				Old:         "",
-				NewComputed: true,
-				RequiresNew: true,
-			},
-			"created": &terraform.ResourceAttrDiff{
-				Old: "false",
-				New: "true",
-			},
-		},
-	}, nil
 }
 
 func (p *ResourceProvider) Resources() []terraform.ResourceType {