Use standard AWS environment variables

builtin/providers/aws/provider.go

@@ -13,23 +13,32 @@ func Provider() terraform.ResourceProvider {
 	return &schema.Provider{
 		Schema: map[string]*schema.Schema{
 			"access_key": &schema.Schema{
-				Type:        schema.TypeString,
-				Required:    true,
-				DefaultFunc: schema.EnvDefaultFunc("AWS_ACCESS_KEY", nil),
+				Type:     schema.TypeString,
+				Required: true,
+				DefaultFunc: schema.MultiEnvDefaultFunc([]string{
+					"AWS_ACCESS_KEY",
+					"AWS_ACCESS_KEY_ID",
+				}, nil),
 				Description: descriptions["access_key"],
 			},
 
 			"secret_key": &schema.Schema{
-				Type:        schema.TypeString,
-				Required:    true,
-				DefaultFunc: schema.EnvDefaultFunc("AWS_SECRET_KEY", nil),
+				Type:     schema.TypeString,
+				Required: true,
+				DefaultFunc: schema.MultiEnvDefaultFunc([]string{
+					"AWS_SECRET_KEY",
+					"AWS_SECRET_ACCESS_KEY",
+				}, nil),
 				Description: descriptions["secret_key"],
 			},
 
 			"region": &schema.Schema{
-				Type:         schema.TypeString,
-				Required:     true,
-				DefaultFunc:  schema.EnvDefaultFunc("AWS_REGION", nil),
+				Type:     schema.TypeString,
+				Required: true,
+				DefaultFunc: schema.MultiEnvDefaultFunc([]string{
+					"AWS_REGION",
+					"AWS_DEFAULT_REGION",
+				}, nil),
 				Description:  descriptions["region"],
 				InputDefault: "us-east-1",
 			},

builtin/providers/aws/provider_test.go

@@ -30,14 +30,14 @@ func TestProvider_impl(t *testing.T) {
 }
 
 func testAccPreCheck(t *testing.T) {
-	if v := os.Getenv("AWS_ACCESS_KEY"); v == "" {
-		t.Fatal("AWS_ACCESS_KEY must be set for acceptance tests")
+	if v := os.Getenv("AWS_ACCESS_KEY_ID"); v == "" {
+		t.Fatal("AWS_ACCESS_KEY_ID must be set for acceptance tests")
 	}
-	if v := os.Getenv("AWS_SECRET_KEY"); v == "" {
-		t.Fatal("AWS_SECRET_KEY must be set for acceptance tests")
+	if v := os.Getenv("AWS_SECRET_ACCESS_KEY"); v == "" {
+		t.Fatal("AWS_SECRET_ACCESS_KEY must be set for acceptance tests")
 	}
-	if v := os.Getenv("AWS_REGION"); v == "" {
+	if v := os.Getenv("AWS_DEFAULT_REGION"); v == "" {
 		log.Println("[INFO] Test: Using us-west-2 as test region")
-		os.Setenv("AWS_REGION", "us-west-2")
+		os.Setenv("AWS_DEFAULT_REGION", "us-west-2")
 	}
 }

helper/schema/schema.go

@@ -174,6 +174,21 @@ func EnvDefaultFunc(k string, dv interface{}) SchemaDefaultFunc {
 	}
 }
 
+// MultiEnvDefaultFunc is a helper function that returns the value of the first
+// environment variable in the given list that returns a non-empty value. If
+// none of the environment variables return a value, the default value is
+// returned.
+func MultiEnvDefaultFunc(ks []string, dv interface{}) SchemaDefaultFunc {
+	return func() (interface{}, error) {
+		for _, k := range ks {
+			if v := os.Getenv(k); v != "" {
+				return v, nil
+			}
+		}
+		return dv, nil
+	}
+}
+
 // SchemaSetFunc is a function that must return a unique ID for the given
 // element. This unique ID is used to store the element in a hash.
 type SchemaSetFunc func(interface{}) int

helper/schema/schema_test.go

@@ -40,6 +40,63 @@ func TestEnvDefaultFunc(t *testing.T) {
 	}
 }
 
+func TestMultiEnvDefaultFunc(t *testing.T) {
+	keys := []string{
+		"TF_TEST_MULTI_ENV_DEFAULT_FUNC1",
+		"TF_TEST_MULTI_ENV_DEFAULT_FUNC2",
+	}
+	defer func() {
+		for _, k := range keys {
+			os.Unsetenv(k)
+		}
+	}()
+
+	// Test that the first key is returned first
+	f := MultiEnvDefaultFunc(keys, "42")
+	if err := os.Setenv(keys[0], "foo"); err != nil {
+		t.Fatalf("err: %s", err)
+	}
+
+	actual, err := f()
+	if err != nil {
+		t.Fatalf("err: %s", err)
+	}
+	if actual != "foo" {
+		t.Fatalf("bad: %#v", actual)
+	}
+
+	if err := os.Unsetenv(keys[0]); err != nil {
+		t.Fatalf("err: %s", err)
+	}
+
+	// Test that the second key is returned if the first one is empty
+	f = MultiEnvDefaultFunc(keys, "42")
+	if err := os.Setenv(keys[1], "foo"); err != nil {
+		t.Fatalf("err: %s", err)
+	}
+
+	actual, err = f()
+	if err != nil {
+		t.Fatalf("err: %s", err)
+	}
+	if actual != "foo" {
+		t.Fatalf("bad: %#v", actual)
+	}
+
+	if err := os.Unsetenv(keys[1]); err != nil {
+		t.Fatalf("err: %s", err)
+	}
+
+	// Test that the default value is returned when no keys are set
+	actual, err = f()
+	if err != nil {
+		t.Fatalf("err: %s", err)
+	}
+	if actual != "42" {
+		t.Fatalf("bad: %#v", actual)
+	}
+}
+
 func TestValueType_Zero(t *testing.T) {
 	cases := []struct {
 		Type  ValueType

website/Gemfile.lock

@@ -1,6 +1,6 @@
 GIT
   remote: git://github.com/hashicorp/middleman-hashicorp.git
-  revision: b82c2c2fdc244cd0bd529ff27cfab24e43f07708
+  revision: 30c15f93fb501041cff97c490b60ddc96c8314c9
   specs:
     middleman-hashicorp (0.1.0)
       bootstrap-sass (~> 3.2)
@@ -20,14 +20,18 @@ GIT
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (4.1.8)
+    activesupport (4.1.9)
       i18n (~> 0.6, >= 0.6.9)
       json (~> 1.7, >= 1.7.7)
       minitest (~> 5.1)
       thread_safe (~> 0.1)
       tzinfo (~> 1.1)
-    bootstrap-sass (3.3.1.0)
-      sass (~> 3.2)
+    autoprefixer-rails (5.0.0.2)
+      execjs
+      json
+    bootstrap-sass (3.3.3)
+      autoprefixer-rails (>= 5.0.0.1)
+      sass (>= 3.2.19)
     builder (3.2.2)
     celluloid (0.16.0)
       timers (~> 4.0.0)
@@ -37,14 +41,14 @@ GEM
       execjs
     coffee-script-source (1.8.0)
     commonjs (0.2.7)
-    compass (1.0.1)
+    compass (1.0.3)
       chunky_png (~> 1.2)
-      compass-core (~> 1.0.1)
+      compass-core (~> 1.0.2)
       compass-import-once (~> 1.0.5)
       rb-fsevent (>= 0.9.3)
       rb-inotify (>= 0.9)
       sass (>= 3.3.13, < 3.5)
-    compass-core (1.0.1)
+    compass-core (1.0.3)
       multi_json (~> 1.0)
       sass (>= 3.3.0, < 3.5)
     compass-import-once (1.0.5)
@@ -54,10 +58,10 @@ GEM
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
     erubis (2.7.0)
-    eventmachine (1.0.3)
+    eventmachine (1.0.4)
     execjs (2.2.2)
     ffi (1.9.6)
-    haml (4.0.5)
+    haml (4.0.6)
       tilt
     hike (1.2.3)
     hitimes (1.2.2)
@@ -66,12 +70,12 @@ GEM
     htmlcompressor (0.1.2)
     http_parser.rb (0.6.0)
     i18n (0.6.11)
-    json (1.8.1)
+    json (1.8.2)
     kramdown (1.5.0)
     less (2.6.0)
       commonjs (~> 0.2.7)
     libv8 (3.16.14.7)
-    listen (2.8.0)
+    listen (2.8.5)
       celluloid (>= 0.15.2)
       rb-fsevent (>= 0.9.3)
       rb-inotify (>= 0.9)
@@ -98,53 +102,53 @@ GEM
       rack-test (~> 0.6.2)
       thor (>= 0.15.2, < 2.0)
       tilt (~> 1.4.1, < 2.0)
-    middleman-livereload (3.3.4)
+    middleman-livereload (3.4.2)
       em-websocket (~> 0.5.1)
-      middleman-core (~> 3.2)
+      middleman-core (>= 3.3)
       rack-livereload (~> 0.3.15)
     middleman-minify-html (3.4.0)
       htmlcompressor (~> 0.1.0)
       middleman-core (>= 3.2)
-    middleman-sprockets (3.3.10)
-      middleman-core (~> 3.3)
+    middleman-sprockets (3.4.1)
+      middleman-core (>= 3.3)
       sprockets (~> 2.12.1)
       sprockets-helpers (~> 1.1.0)
-      sprockets-sass (~> 1.2.0)
+      sprockets-sass (~> 1.3.0)
     middleman-syntax (2.0.0)
       middleman-core (~> 3.2)
       rouge (~> 1.0)
-    minitest (5.4.3)
+    minitest (5.5.1)
     multi_json (1.10.1)
     padrino-helpers (0.12.4)
       i18n (~> 0.6, >= 0.6.7)
       padrino-support (= 0.12.4)
       tilt (~> 1.4.1)
     padrino-support (0.12.4)
       activesupport (>= 3.1)
-    rack (1.5.2)
+    rack (1.6.0)
     rack-contrib (1.2.0)
       rack (>= 0.9.1)
     rack-livereload (0.3.15)
       rack
-    rack-rewrite (1.5.0)
+    rack-rewrite (1.5.1)
     rack-ssl-enforcer (0.2.8)
-    rack-test (0.6.2)
+    rack-test (0.6.3)
       rack (>= 1.0)
     rb-fsevent (0.9.4)
     rb-inotify (0.9.5)
       ffi (>= 0.5.0)
-    redcarpet (3.2.0)
+    redcarpet (3.2.2)
     ref (1.0.5)
-    rouge (1.7.3)
-    sass (3.4.8)
+    rouge (1.7.7)
+    sass (3.4.10)
     sprockets (2.12.3)
       hike (~> 1.2)
       multi_json (~> 1.0)
       rack (~> 1.0)
       tilt (~> 1.1, != 1.3.0)
     sprockets-helpers (1.1.0)
       sprockets (~> 2.0)
-    sprockets-sass (1.2.0)
+    sprockets-sass (1.3.1)
       sprockets (~> 2.0)
       tilt (~> 1.1)
     therubyracer (0.12.1)
@@ -161,8 +165,8 @@ GEM
       hitimes
     tzinfo (1.2.2)
       thread_safe (~> 0.1)
-    uber (0.0.11)
-    uglifier (2.5.3)
+    uber (0.0.13)
+    uglifier (2.7.0)
       execjs (>= 0.3.0)
       json (>= 1.8.0)
 

website/source/docs/providers/aws/index.html.markdown

@@ -35,11 +35,10 @@ resource "aws_instance" "web" {
 The following arguments are supported:
 
 * `access_key` - (Required) This is the AWS access key. It must be provided, but
-  it can also be sourced from the `AWS_ACCESS_KEY` environment variable.
+  it can also be sourced from the `AWS_ACCESS_KEY_ID` environment variable.
 
 * `secret_key` - (Required) This is the AWS secret key. It must be provided, but
-  it can also be sourced from the `AWS_SECRET_KEY` environment variable.
+  it can also be sourced from the `AWS_SECRET_ACCESS_KEY` environment variable.
 
 * `region` - (Required) This is the AWS region. It must be provided, but
-  it can also be sourced from the `AWS_REGION` environment variables.
-
+  it can also be sourced from the `AWS_DEFAULT_REGION` environment variables.