DCD-686: Check for no-op when no manifest URL specified.

roles/restore_backups/.yamllint

@@ -0,0 +1,12 @@
+extends: default
+
+rules:
+  braces:
+    max-spaces-inside: 1
+    level: error
+  brackets:
+    max-spaces-inside: 1
+    level: error
+  line-length: disable
+  truthy: disable
+  trailing-spaces: false

roles/restore_backups/molecule/default/Dockerfile.j2

@@ -0,0 +1,14 @@
+# Molecule managed
+
+{% if item.registry is defined %}
+FROM {{ item.registry.url }}/{{ item.image }}
+{% else %}
+FROM {{ item.image }}
+{% endif %}
+
+RUN if [ $(command -v apt-get) ]; then apt-get update && apt-get install -y python sudo bash ca-certificates && apt-get clean; \
+    elif [ $(command -v dnf) ]; then dnf makecache && dnf --assumeyes install python sudo python-devel python*-dnf bash && dnf clean all; \
+    elif [ $(command -v yum) ]; then yum makecache fast && yum install -y python sudo yum-plugin-ovl bash && sed -i 's/plugins=0/plugins=1/g' /etc/yum.conf && yum clean all; \
+    elif [ $(command -v zypper) ]; then zypper refresh && zypper install -y python sudo bash python-xml && zypper clean -a; \
+    elif [ $(command -v apk) ]; then apk update && apk add --no-cache python sudo bash ca-certificates; \
+    elif [ $(command -v xbps-install) ]; then xbps-install -Syu && xbps-install -y python sudo bash ca-certificates && xbps-remove -O; fi

roles/restore_backups/molecule/default/molecule.yml

@@ -0,0 +1,36 @@
+---
+dependency:
+  name: galaxy
+driver:
+  name: docker
+lint:
+  name: yamllint
+platforms:
+  - name: amazon_linux2
+    image: amazonlinux:2
+    groups:
+      - aws_node_local
+    ulimits:
+      - nofile:262144:262144
+  - name: ubuntu_lts
+    image: ubuntu:bionic
+    groups:
+      - aws_node_local
+    ulimits:
+      - nofile:262144:262144
+provisioner:
+  name: ansible
+  options:
+    skip-tags: runtime_pkg
+  lint:
+    name: ansible-lint
+    options:
+      x: ["701"]
+  inventory:
+    links:
+      group_vars: ../../../../group_vars/
+verifier:
+  name: testinfra
+  lint:
+    name: flake8
+    enabled: false

roles/restore_backups/molecule/default/playbook.yml

@@ -0,0 +1,10 @@
+---
+- name: Converge
+  hosts: all
+  vars:
+    atl_backup_manifest_url: ''
+    atl_backup_home_restore_canary_path: '/tmp/canary.tmp'
+
+  roles:
+    # Should be no-op
+    - role: restore_backups

roles/restore_backups/molecule/default/tests/test_default.py

@@ -0,0 +1,10 @@
+import os
+
+import testinfra.utils.ansible_runner
+
+testinfra_hosts = testinfra.utils.ansible_runner.AnsibleRunner(
+    os.environ['MOLECULE_INVENTORY_FILE']).get_hosts('all')
+
+
+def test_no_canary_file(host):
+    assert not host.file('atl_backup_home_restore_canary_path').exists

roles/restore_backups/tasks/main.yml

@@ -133,4 +133,4 @@
       when: not restore_canary.stat.exists
 
 
-  when: atl_backup_manifest_url is defined and atl_backup_manifest_url != ''
+  when: atl_restore_required