From 1a806f04e21a5dc9f161461d11e0bc30c7698d14 Mon Sep 17 00:00:00 2001
From: Denis Fortin <denis.fortin@adevinta.com>
Date: Tue, 18 Aug 2020 10:14:17 +0200
Subject: [PATCH] terraform: Add parameter for plan file

Add terraform_plan parameter to be defined when using apply
command. It allows to specify a plan file to apply.

Change-Id: I2858317e4dd560030a367b2cd2ac43db5585152a
---
 roles/terraform/README.rst         | 4 ++++
 roles/terraform/defaults/main.yaml | 1 +
 roles/terraform/tasks/main.yaml    | 1 +
 3 files changed, 6 insertions(+)

diff --git a/roles/terraform/README.rst b/roles/terraform/README.rst
index 50a98a1ae..4bd0aaf2e 100644
--- a/roles/terraform/README.rst
+++ b/roles/terraform/README.rst
@@ -17,6 +17,10 @@ Run terraform command. Assumes the appropriate version of terraform has been ins
 
    String of extra command line options to pass to terraform.
 
+.. zuul:rolevar:: terraform_plan
+
+   Optional. Path to the plan file to use when using 'apply' command.
+
 .. zuul:rolevar:: terraform_workspace
 
    Name of the workspace to operate against.
diff --git a/roles/terraform/defaults/main.yaml b/roles/terraform/defaults/main.yaml
index d6caa23bc..e59581a22 100644
--- a/roles/terraform/defaults/main.yaml
+++ b/roles/terraform/defaults/main.yaml
@@ -1,5 +1,6 @@
 terraform_executable: "{{ ansible_user_dir }}/.local/bin/terraform"
 terraform_extra_args: ""
+terraform_plan: ""
 terraform_create_workspace: false
 terraform_purge_workspace: false
 terraform_comment: true
diff --git a/roles/terraform/tasks/main.yaml b/roles/terraform/tasks/main.yaml
index 6fe8038fc..2bc054d40 100644
--- a/roles/terraform/tasks/main.yaml
+++ b/roles/terraform/tasks/main.yaml
@@ -59,6 +59,7 @@
     -input=false
     {{ terraform_extra_args }}
     {% if terraform_command == 'apply' or terraform_command == 'destroy' %}-auto-approve{% endif %}
+    {{ terraform_plan }}
   args:
     chdir: "{{ zuul_work_dir }}"
   environment: