Add terraform wrapper

.gitlab-ci.yml

@@ -6,6 +6,7 @@ services:
   - docker:19.03.5-dind
 
 stages:
+  - lint
   - build
   - test
   - release
@@ -49,6 +50,14 @@ stages:
     TERRAFORM_BASE: "hashicorp/terraform:0.12.26"
     TERRAFORM_VERSION: "0.12"
 
+shell check:
+  stage: lint
+  image: koalaman/shellcheck-alpine:stable
+  before_script:
+    - shellcheck --version
+  script:
+    - shellcheck src/**/*.sh
+
 build 0.11:
   <<: *terraform011
   <<: *build

Dockerfile

@@ -3,5 +3,8 @@ FROM $BASE
 
 RUN apk add --no-cache jq
 
+COPY src/bin/gitlab-terraform.sh /usr/bin/gitlab-terraform
+RUN chmod +x /usr/bin/gitlab-terraform
+
 # Override ENTRYPOINT since hashicorp/terraform uses `terraform`
 ENTRYPOINT []

src/bin/gitlab-terraform.sh

+#!/bin/sh -e
+
+set -x
+
+case "${1}" in
+  "plan-json")
+    output="${2}"
+    shift 2
+    terraform show --json "${@}" | jq -r '([.resource_changes[]?.change.actions?]|flatten)|{"create":(map(select(.=="create"))|length),"update":(map(select(.=="update"))|length),"delete":(map(select(.=="delete"))|length)}' > "${output}"
+  ;;
+  *)
+    terraform "${@}"
+  ;;
+esac