allow the outpath to be a variable passed in

DOCS.md

@@ -171,6 +171,18 @@ pipeline:
 +   parallelism: 2
 ```
 
+You may want to specify the out directory of the plan file so you can pass it to builds further down the pipeline
+If you want to change Terraform's default outfile (currently plan.tfout in the cwd) then set the `plan_path` parameter.
+
+```diff
+pipeline:
+  terraform:
+    image: quay.io/agari/agari-drone-terraform:5
++   plan_path: /tmp/a.out
+```
+
+Destroying the service can be done by specifying `plan-destroy` and `destroy` actions. Keep in mind that Fastly won't allow a service with active version be destroyed. Use `force_destroy` option in the service definition for terraform to handle it.
+
 Destroying the service can be done by specifying `plan-destroy` and `destroy` actions. Keep in mind that Fastly won't allow a service with active version be destroyed. Use `force_destroy` option in the service definition for terraform to handle it.
 
 ```yaml

main.go

@@ -48,6 +48,11 @@ func main() {
 			Usage:  "The number of concurrent operations as Terraform walks its graph",
 			EnvVar: "PLUGIN_PARALLELISM",
 		},
+		cli.StringFlag{
+			Name:   "plan_path",
+			Usage:  "The absolute path to save the outfile eg: /tmp/myplan.tfout",
+			EnvVar: "PLAN_PATH",
+		},
 		cli.StringFlag{
 			Name:   "netrc.machine",
 			Usage:  "netrc machine",
@@ -146,6 +151,7 @@ func run(c *cli.Context) error {
 			RoleARN:     c.String("role_arn_to_assume"),
 			RootDir:     c.String("root_dir"),
 			Parallelism: c.Int("parallelism"),
+			PlanPath:    c.String("plan_path"),
 			Targets:     c.StringSlice("targets"),
 			VarFiles:    c.StringSlice("var_files"),
 		},

plugin.go

@@ -28,6 +28,7 @@ type (
 		Cacert      string
 		Sensitive   bool
 		RoleARN     string
+		PlanPath    string
 		RootDir     string
 		Parallelism int
 		Targets     []string
@@ -277,7 +278,11 @@ func tfApply(config Config) *exec.Cmd {
 	if config.InitOptions.LockTimeout != "" {
 		args = append(args, fmt.Sprintf("-lock-timeout=%s", config.InitOptions.LockTimeout))
 	}
-	args = append(args, "plan.tfout")
+	if config.PlanPath != "" {
+		args = append(args, config.PlanPath)
+	} else {
+		args = append(args, "plan.tfout")
+	}
 	return exec.Command(
 		"terraform",
 		args...,
@@ -316,6 +321,8 @@ func tfPlan(config Config, destroy bool) *exec.Cmd {
 
 	if destroy {
 		args = append(args, "-destroy")
+	} else if config.PlanPath != "" {
+		args = append(args, fmt.Sprintf("-out=%s", config.PlanPath))
 	} else {
 		args = append(args, "-out=plan.tfout")
 	}

plugin_test.go

@@ -43,6 +43,11 @@ func TestPlugin(t *testing.T) {
 					args{config: Config{}},
 					exec.Command("terraform", "apply", "plan.tfout"),
 				},
+				{
+					"with path",
+					args{config: Config{PlanPath: "/tmp/a.tfout"}},
+					exec.Command("terraform", "apply", "/tmp/a.tfout"),
+				},
 				{
 					"with parallelism",
 					args{config: Config{Parallelism: 5}},
@@ -123,6 +128,12 @@ func TestPlugin(t *testing.T) {
 					false,
 					exec.Command("terraform", "plan", "-out=plan.tfout"),
 				},
+				{
+					"with path",
+					args{config: Config{PlanPath: "/tmp/a.tfout"}},
+					false,
+					exec.Command("terraform", "plan", "-out=/tmp/a.tfout"),
+				},
 				{
 					"destroy",
 					args{config: Config{}},