setup show

DOCS.md

@@ -8,7 +8,7 @@ logo: terraform.svg
 image: quay.io/agari/agari-drone-terraform
 ---
 
-The Terraform plugin applies the infrastructure configuration contained within the repository. The below pipeline configuration demonstrates simple usage which will run a `validate`, `plan` and `apply`:
+The Terraform plugin applies the infrastructure configuration contained within the repository. The below pipeline configuration demonstrates simple usage which will run a `validate`, `show`, `plan` and `apply`:
 
 ```yaml
 pipeline:
@@ -33,9 +33,12 @@ Example of explicitly specifying `actions` to perform a dry run.
 pipeline:
   terraform:
     image: quay.io/agari/agari-drone-terraform:5
+    planfile: "../planshare.out"
+    difffile: "../diff.out"
 +   actions:
 +     - validate
 +     - plan
++     - show
 ```
 
 Example configuration passing secrets to terraform.  Please read

main.go

@@ -27,7 +27,7 @@ func main() {
 			Name:   "actions",
 			Usage:  "a list of actions to have terraform perform",
 			EnvVar: "PLUGIN_ACTIONS",
-			Value:  &cli.StringSlice{"validate", "plan", "apply"},
+			Value:  &cli.StringSlice{"validate", "plan", "show", "apply"},
 		},
 		cli.StringFlag{
 			Name:   "ca_cert",
@@ -43,6 +43,11 @@ func main() {
 			Usage:  "The absolute path to save the outfile eg: /tmp/myplan.tfout",
 			EnvVar: "PLUGIN_PLANFILE",
 		},
+		cli.StringFlag{
+			Name:   "difffile",
+			Usage:  "The absolute path to save the diff file to eg: /tmp/myplan.diff",
+			EnvVar: "PLUGIN_DIFFFILE",
+		},
 		cli.StringFlag{
 			Name:   "init_options",
 			Usage:  "options for the init command. See https://www.terraform.io/docs/commands/init.html",
@@ -152,6 +157,7 @@ func run(c *cli.Context) error {
 			RootDir:     c.String("root_dir"),
 			Parallelism: c.Int("parallelism"),
 			Planfile:    c.String("planfile"),
+			Difffile:    c.String("difffile"),
 			Targets:     c.StringSlice("targets"),
 			VarFiles:    c.StringSlice("var_files"),
 		},

plugin.go

@@ -29,6 +29,7 @@ type (
 		Sensitive   bool
 		RoleARN     string
 		Planfile    string
+		Difffile    string
 		RootDir     string
 		Parallelism int
 		Targets     []string
@@ -135,10 +136,12 @@ func (p Plugin) Exec() error {
 			commands = append(commands, tfPlan(p.Config, true))
 		case "apply":
 			commands = append(commands, tfApply(p.Config))
+		case "show":
+			commands = append(commands, tfShow(p.Config))
 		case "destroy":
 			commands = append(commands, tfDestroy(p.Config))
 		default:
-			return fmt.Errorf("valid actions are: validate, plan, apply, plan-destroy, destroy.  You provided %s", action)
+			return fmt.Errorf("valid actions are: validate, plan, show, apply, plan-destroy, destroy.  You provided %s", action)
 		}
 	}
 
@@ -259,6 +262,20 @@ func trace(cmd *exec.Cmd) {
 	fmt.Println("$", strings.Join(cmd.Args, " "))
 }
 
+func tfShow(config Config) *exec.Cmd {
+	args := []string{
+		"show",
+		"-no-color",
+	}
+	if config.Difffile != "" {
+		args = append(args, config.Difffile)
+	}
+	return exec.Command(
+		"terraform",
+		args...,
+	)
+}
+
 func tfApply(config Config) *exec.Cmd {
 	args := []string{
 		"apply",

plugin_test.go

@@ -27,6 +27,34 @@ func TestPlugin(t *testing.T) {
 		})
 	})
 
+	g.Describe("tfShow", func() {
+		g.It("Should return correct apply commands given the arguments", func() {
+			type args struct {
+				config Config
+			}
+
+			tests := []struct {
+				name string
+				args args
+				want *exec.Cmd
+			}{
+				{
+					"default",
+					args{config: Config{}},
+					exec.Command("terraform", "show", "-no-color"),
+				},
+				{
+					"with planfile",
+					args{config: Config{Difffile: "/tmp/plan.tfout"}},
+					exec.Command("terraform", "show", "-no-color", "/tmp/plan.tfout"),
+				},
+			}
+			for _, tt := range tests {
+				g.Assert(tfShow(tt.args.config)).Equal(tt.want)
+			}
+		})
+	})
+
 	g.Describe("tfApply", func() {
 		g.It("Should return correct apply commands given the arguments", func() {
 			type args struct {