Molecule testing for TripleO Strategy Plugins

For both tripleo_free and tripleo_linear, add molecule tests that will
execute a simple task (for now) and test the max_fail_percentage value
that is defined in the Ansible inventory.

We simulate a failure on one compute node, which shouldn't make the
playbook failing since we tolerate 50% of failure (we have 6 nodes and
one failure).

Change-Id: I97a0171f9e7ba08f020ac7cf224a9ff9f6a34d01

ansible-test-env.rc

@@ -2,6 +2,7 @@ export TRIPLEO_ANSIBLE_WORKPATH="$(dirname $(readlink -f ${BASH_SOURCE[0]}))"
 export ANSIBLE_STDOUT_CALLBACK=debug
 export ANSIBLE_ACTION_PLUGINS="${TRIPLEO_ANSIBLE_WORKPATH}/tripleo_ansible/roles.galaxy/config_template/action:${TRIPLEO_ANSIBLE_WORKPATH}/tripleo_ansible/ansible_plugins/action"
 export ANSIBLE_CALLBACK_PLUGINS="${TRIPLEO_ANSIBLE_WORKPATH}/tripleo_ansible/ansible_plugins/callback"
+export ANSIBLE_STRATEGY_PLUGINS="${TRIPLEO_ANSIBLE_WORKPATH}/tripleo_ansible/ansible_plugins/strategy"
 export ANSIBLE_FILTER_PLUGINS="${TRIPLEO_ANSIBLE_WORKPATH}/tripleo_ansible/ansible_plugins/filter"
 export ANSIBLE_LIBRARY="${TRIPLEO_ANSIBLE_WORKPATH}/tripleo_ansible/roles.galaxy/config_template/library:${TRIPLEO_ANSIBLE_WORKPATH}/tripleo_ansible/ansible_plugins/modules"
 export ANSIBLE_MODULE_UTILS="${TRIPLEO_ANSIBLE_WORKPATH}/tripleo_ansible/ansible_plugins/module_utils"

tripleo_ansible/ansible_plugins/tests/molecule/tripleo_strategies/ansible-test-env.rc

@@ -0,0 +1 @@
+../../../../../ansible-test-env.rc

tripleo_ansible/ansible_plugins/tests/molecule/tripleo_strategies/converge.yml

@@ -0,0 +1,59 @@
+---
+# Copyright 2020 Red Hat, Inc.
+# All Rights Reserved.
+#
+# 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
+#
+#     http://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.
+#
+- name: Run strategy tests
+  hosts: localhost
+  connection: local
+  gather_facts: false
+  environment:
+    ANSIBLE_ROLES_PATH: "${ANSIBLE_ROLES_PATH:-/usr/share/ansible/roles}:${HOME}/zuul-jobs/roles"
+    ANSIBLE_LIBRARY: "${ANSIBLE_LIBRARY:-/usr/share/ansible/plugins/modules}"
+    ANSIBLE_FILTER_PLUGINS: "${ANSIBLE_FILTER_PLUGINS:-/usr/share/ansible/plugins/filter}"
+    ANSIBLE_STRATEGY_PLUGINS: "${ANSIBLE_STRATEGY_PLUGINS:-/usr/share/ansible/plugins/strategy}"
+  tasks:
+    - name: Run TripleO linear success
+      shell: |-
+        . {{ playbook_dir }}/ansible-test-env.rc
+        ansible-playbook {{ playbook_dir }}/tripleo-linear.yml -i {{ playbook_dir }}/inventory-success | grep "second"
+      args:
+        executable: /bin/bash
+      register: linear_success
+
+    - name: Run TripleO linear fail
+      shell: |-
+        . {{ playbook_dir }}/ansible-test-env.rc
+        ansible-playbook {{ playbook_dir }}/tripleo-linear.yml -i {{ playbook_dir }}/inventory-fail | grep "second"
+      args:
+        executable: /bin/bash
+      register: linear_fail
+      failed_when: linear_fail.rc == 0
+
+    - name: Run TripleO free success
+      shell: |-
+        . {{ playbook_dir }}/ansible-test-env.rc
+        ansible-playbook {{ playbook_dir }}/tripleo-free.yml -i {{ playbook_dir }}/inventory-success | grep "second"
+      args:
+        executable: /bin/bash
+      register: free_success
+
+    - name: Run TripleO free fail
+      shell: |-
+        . {{ playbook_dir }}/ansible-test-env.rc
+        ansible-playbook {{ playbook_dir }}/tripleo-free.yml -i {{ playbook_dir }}/inventory-fail | grep "second"
+      args:
+        executable: /bin/bash
+      register: free_fail
+      failed_when: free_fail.rc == 0

tripleo_ansible/ansible_plugins/tests/molecule/tripleo_strategies/inventory-fail

@@ -0,0 +1,16 @@
+[Controller]
+instance1 ansible_connection=local
+instance2 ansible_connection=local
+instance3 ansible_connection=local
+
+[Compute]
+instance4 ansible_connection=local
+instance5 ansible_connection=local
+
+[Controller:vars]
+max_fail_percentage=0
+tripleo_role_name=Controller
+
+[Compute:vars]
+max_fail_percentage=10
+tripleo_role_name=Compute

tripleo_ansible/ansible_plugins/tests/molecule/tripleo_strategies/inventory-success

@@ -0,0 +1,16 @@
+[Controller]
+instance1 ansible_connection=local
+instance2 ansible_connection=local
+instance3 ansible_connection=local
+
+[Compute]
+instance4 ansible_connection=local
+instance5 ansible_connection=local
+
+[Controller:vars]
+max_fail_percentage=0
+tripleo_role_name=Controller
+
+[Compute:vars]
+max_fail_percentage=100
+tripleo_role_name=Compute

tripleo_ansible/ansible_plugins/tests/molecule/tripleo_strategies/molecule.yml

@@ -0,0 +1,38 @@
+---
+driver:
+  name: delegated
+  options:
+    managed: false
+    login_cmd_template: >-
+      ssh
+      -o UserKnownHostsFile=/dev/null
+      -o StrictHostKeyChecking=no
+      -o Compression=no
+      -o TCPKeepAlive=yes
+      -o VerifyHostKeyDNS=no
+      -o ForwardX11=no
+      -o ForwardAgent=no
+      {instance}
+    ansible_connection_options:
+      ansible_connection: ssh
+
+log: true
+
+platforms:
+  - name: instance1
+
+provisioner:
+  name: ansible
+  config_options:
+    defaults:
+      fact_caching: jsonfile
+      fact_caching_connection: /tmp/molecule/facts
+  log: true
+
+scenario:
+  test_sequence:
+    - converge
+    - verify
+
+verifier:
+  name: testinfra

tripleo_ansible/ansible_plugins/tests/molecule/tripleo_strategies/tripleo-free.yml

@@ -0,0 +1,40 @@
+---
+# Copyright 2020 Red Hat, Inc.
+# All Rights Reserved.
+#
+# 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
+#
+#     http://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.
+#
+- name: Run a first play with tests for the tripleo_linear strategy
+  hosts: all
+  any_errors_fatal: true
+  gather_facts: false
+  strategy: tripleo_free
+  tasks:
+    - name: Run a task that will fail on one host
+      debug:
+        msg: "Task running with tripleo_linear strategy with max_fail_percentage set to {{ max_fail_percentage|default('undefined') }}"
+      failed_when:
+        - ansible_host in ['instance5']
+    - name: Run a task after a potential failure on a node
+      debug:
+        msg: "Task running on {{ ansible_host }} after a potential failure"
+
+- name: Run a second play with tests for the tripleo_linear strategy
+  hosts: all
+  any_errors_fatal: true
+  gather_facts: false
+  strategy: tripleo_free
+  tasks:
+    - name: Run a task on a node
+      debug:
+        msg: "Task running on {{ ansible_host }}"

tripleo_ansible/ansible_plugins/tests/molecule/tripleo_strategies/tripleo-linear.yml

@@ -0,0 +1,40 @@
+---
+# Copyright 2020 Red Hat, Inc.
+# All Rights Reserved.
+#
+# 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
+#
+#     http://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.
+#
+- name: Run a first play with tests for the tripleo_linear strategy
+  hosts: all
+  any_errors_fatal: true
+  gather_facts: false
+  strategy: tripleo_linear
+  tasks:
+    - name: Run a task that will fail on one host
+      debug:
+        msg: "Task running with tripleo_linear strategy with max_fail_percentage set to {{ max_fail_percentage|default('undefined') }}"
+      failed_when:
+        - ansible_host in ['instance5']
+    - name: Run a task after a potential failure on a node
+      debug:
+        msg: "Task running on {{ ansible_host }} after a potential failure"
+
+- name: Run a second play with tests for the tripleo_linear strategy
+  hosts: all
+  any_errors_fatal: true
+  gather_facts: false
+  strategy: tripleo_linear
+  tasks:
+    - name: Run a task on a node
+      debug:
+        msg: "Task running on {{ ansible_host }}"