Add Terragrunt integration and general parser (#24)

* - add kw parser
- add tg command methods

* - add plan_all parse output progress
- replace terra* command func cli params with **kw

* add tgbinary to ci

* - add tg shared doc string decorator
- separate some of the public methods tg_xxx() | tf_xxx()
- fix parse_args() styling

* - Rollback parse_args()
- Add tg global args to parse_args()
- Add tg global args decorator
- Add all param to tg_xxx methods

* - mv tg flags before tf flags for cli args
- add common tg args to tg methods

* - fix tg source module warning
- add output() fixture to tg test

Author: marshall7m

.ci/cloudbuild.test.yaml

@@ -23,7 +23,9 @@ steps:
         wget https://releases.hashicorp.com/terraform/${_TERRAFORM_VERSION}/terraform_${_TERRAFORM_VERSION}_linux_amd64.zip &&
         unzip terraform_${_TERRAFORM_VERSION}_linux_amd64.zip -d /builder/home/.local/bin &&
         rm terraform_${_TERRAFORM_VERSION}_linux_amd64.zip &&
-        chmod 755 /builder/home/.local/bin/terraform
+        wget -O /builder/home/.local/bin/terragrunt https://github.com/gruntwork-io/terragrunt/releases/download/v${_TERRAGRUNT_VERSION}/terragrunt_linux_amd64 &&
+        chmod 755 /builder/home/.local/bin/terraform &&
+        chmod 755 /builder/home/.local/bin/terragrunt
   # TODO(ludoo): split into two triggers with different filters
   - name: python:3.6-alpine
     id: test
@@ -36,6 +38,7 @@ steps:
 
 substitutions:
   _TERRAFORM_VERSION: 0.13.5
+  _TERRAGRUNT_VERSION: 0.28.2
 
 tags:
   - "ci"

test/fixtures/tg_apply_all/bar/terragrunt.hcl

@@ -0,0 +1,11 @@
+include {
+  path = find_in_parent_folders()
+}
+
+terraform {
+  source = "../..//apply"
+}
+
+inputs = {
+    names = ["bar"]
+}

test/fixtures/tg_apply_all/foo/terragrunt.hcl

@@ -0,0 +1,11 @@
+include {
+  path = find_in_parent_folders()
+}
+
+terraform {
+  source = "../..//apply"
+}
+
+inputs = {
+    names = ["foo"]
+}

test/fixtures/tg_apply_all/terragrunt.hcl

@@ -0,0 +1,11 @@
+terraform {
+  source = "..//apply"
+}
+
+generate "provider" {
+  path      = "provider.tf"
+  if_exists = "overwrite_terragrunt"
+  contents  = <<EOF
+provider "null" {}
+EOF
+}

test/test_tg_all.py

@@ -0,0 +1,28 @@
+# Copyright 2019 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import pytest
+import tftest
+
+import os
+import sys
+
+@pytest.fixture
+def output(fixtures_dir):
+  tf = tftest.TerraformTest('tg_apply_all', fixtures_dir, binary='terragrunt')
+  tf.setup()
+  tf.tg_apply(all=True, output=False)
+  yield tf.tg_output(all=True)
+
+# TODO: Add output test