Merge pull request #1185 from hashicorp/f-remote-resource

Feature: Remote Modules

builtin/bins/provider-terraform/main.go

+package main
+
+import (
+	"github.com/hashicorp/terraform/builtin/providers/terraform"
+	"github.com/hashicorp/terraform/plugin"
+)
+
+func main() {
+	plugin.Serve(&plugin.ServeOpts{
+		ProviderFunc: terraform.Provider,
+	})
+}

builtin/bins/provider-terraform/main_test.go

+package main

builtin/providers/terraform/provider.go

+package terraform
+
+import (
+	"github.com/hashicorp/terraform/helper/schema"
+	"github.com/hashicorp/terraform/terraform"
+)
+
+// Provider returns a terraform.ResourceProvider.
+func Provider() terraform.ResourceProvider {
+	return &schema.Provider{
+		ResourcesMap: map[string]*schema.Resource{
+			"terraform_remote_state": resourceRemoteState(),
+		},
+	}
+}

builtin/providers/terraform/provider_test.go

+package terraform
+
+import (
+	"testing"
+
+	"github.com/hashicorp/terraform/helper/schema"
+	"github.com/hashicorp/terraform/terraform"
+)
+
+var testAccProviders map[string]terraform.ResourceProvider
+var testAccProvider *schema.Provider
+
+func init() {
+	testAccProvider = Provider().(*schema.Provider)
+	testAccProviders = map[string]terraform.ResourceProvider{
+		"terraform": testAccProvider,
+	}
+}
+
+func TestProvider(t *testing.T) {
+	if err := Provider().(*schema.Provider).InternalValidate(); err != nil {
+		t.Fatalf("err: %s", err)
+	}
+}
+
+func TestProvider_impl(t *testing.T) {
+	var _ terraform.ResourceProvider = Provider()
+}
+
+func testAccPreCheck(t *testing.T) {
+}

builtin/providers/terraform/resource_state.go

+package terraform
+
+import (
+	"log"
+	"time"
+
+	"github.com/hashicorp/terraform/helper/schema"
+	"github.com/hashicorp/terraform/state/remote"
+)
+
+func resourceRemoteState() *schema.Resource {
+	return &schema.Resource{
+		Create: resourceRemoteStateCreate,
+		Read:   resourceRemoteStateRead,
+		Delete: resourceRemoteStateDelete,
+
+		Schema: map[string]*schema.Schema{
+			"backend": &schema.Schema{
+				Type:     schema.TypeString,
+				Required: true,
+				ForceNew: true,
+			},
+
+			"config": &schema.Schema{
+				Type:     schema.TypeMap,
+				Optional: true,
+				ForceNew: true,
+			},
+
+			"output": &schema.Schema{
+				Type:     schema.TypeMap,
+				Computed: true,
+			},
+		},
+	}
+}
+
+func resourceRemoteStateCreate(d *schema.ResourceData, meta interface{}) error {
+	return resourceRemoteStateRead(d, meta)
+}
+
+func resourceRemoteStateRead(d *schema.ResourceData, meta interface{}) error {
+	backend := d.Get("backend").(string)
+	config := make(map[string]string)
+	for k, v := range d.Get("config").(map[string]interface{}) {
+		config[k] = v.(string)
+	}
+
+	// Create the client to access our remote state
+	log.Printf("[DEBUG] Initializing remote state client: %s", backend)
+	client, err := remote.NewClient(backend, config)
+	if err != nil {
+		return err
+	}
+
+	// Create the remote state itself and refresh it in order to load the state
+	log.Printf("[DEBUG] Loading remote state...")
+	state := &remote.State{Client: client}
+	if err := state.RefreshState(); err != nil {
+		return err
+	}
+
+	var outputs map[string]string
+	if !state.State().Empty() {
+		outputs = state.State().RootModule().Outputs
+	}
+
+	d.SetId(time.Now().UTC().String())
+	d.Set("output", outputs)
+	return nil
+}
+
+func resourceRemoteStateDelete(d *schema.ResourceData, meta interface{}) error {
+	d.SetId("")
+	return nil
+}

builtin/providers/terraform/resource_state_test.go

+package terraform
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/hashicorp/terraform/helper/resource"
+	"github.com/hashicorp/terraform/terraform"
+)
+
+func TestAccState_basic(t *testing.T) {
+	resource.Test(t, resource.TestCase{
+		PreCheck:  func() { testAccPreCheck(t) },
+		Providers: testAccProviders,
+		Steps: []resource.TestStep{
+			resource.TestStep{
+				Config: testAccState_basic,
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckStateValue(
+						"terraform_remote_state.foo", "foo", "bar"),
+				),
+			},
+		},
+	})
+}
+
+func testAccCheckStateValue(id, name, value string) resource.TestCheckFunc {
+	return func(s *terraform.State) error {
+		rs, ok := s.RootModule().Resources[id]
+		if !ok {
+			return fmt.Errorf("Not found: %s", id)
+		}
+		if rs.Primary.ID == "" {
+			return fmt.Errorf("No ID is set")
+		}
+
+		v := rs.Primary.Attributes["output."+name]
+		if v != value {
+			return fmt.Errorf(
+				"Value for %s is %s, not %s", name, v, value)
+		}
+
+		return nil
+	}
+}
+
+const testAccState_basic = `
+resource "terraform_remote_state" "foo" {
+	backend = "_local"
+
+	config {
+		path = "./test-fixtures/basic.tfstate"
+	}
+}`