Features/introduce multi platform travis (#45)

* Remove dockefiles directory

* Remove ci directory

* Check for ansible_service_mgr when installing services

* Remove recurse directive when creating directories

* Add new .travis and tests

* Install systemd unit file under /lib/systemd/system

* Reload systemctl daemon when systemd

.travis.yml

@@ -1,29 +1,76 @@
----
-language: python
-python: "2.7"
+sudo: required
 
-before_install:
-  - sudo apt-get update -qq
-  - sudo apt-get install curl -y
+env:
+  global:
+    # https://github.com/travis-ci/travis-ci/issues/6461#issuecomment-239577306
+    DOCKER_VERSION: "1.9.1-0~trusty"
+  matrix:
+    - distro: ernestasposkus/centos7
+      init: /usr/lib/systemd/systemd
+      run_opts: "--privileged --volume=/sys/fs/cgroup:/sys/fs/cgroup:ro"
+    - distro: ernestasposkus/centos6
+      init: /sbin/init
+      run_opts: ""
+    - distro: ernestasposkus/ubuntu1604
+      init: /lib/systemd/systemd
+      run_opts: "--privileged --volume=/sys/fs/cgroup:/sys/fs/cgroup:ro"
+    - distro: ernestasposkus/ubuntu1404
+      init: /sbin/init
+      run_opts: ""
+
+services:
+  - docker
 
-install:
-  - pip install -U ansible
+before_install:
+  # Downgrade to specific version of Docker engine.
+  - sudo apt-get update
+  - sudo apt-get remove docker-engine -yq
+  - sudo apt-get install docker-engine=$DOCKER_VERSION -yq --no-install-suggests --no-install-recommends --force-yes -o Dpkg::Options::="--force-confnew"
 
-  # Add ansible.cfg to pick up roles path.
-  - "{ echo '[defaults]'; echo 'roles_path = ../'; } >> ansible.cfg"
+  # Pull container.
+  - 'sudo docker pull ${distro}:latest'
 
 script:
-  # Check the role/playbook's syntax.
-  - "ansible-playbook -i ci/inventory ci/playbook.yml --syntax-check"
+  - container_id=$(mktemp)
+    # Run container in detached state.
+  - 'sudo docker run --detach --volume="${PWD}":/etc/ansible/roles/role_under_test:ro ${run_opts} ${distro}:latest "${init}" > "${container_id}"'
+
+  # Inspect docker container
+  - 'sudo docker inspect $(cat ${container_id})'
+
+  # Print ansible version
+  - 'sudo docker exec --tty "$(cat ${container_id})" env TERM=xterm ansible --version'
+
+  # Check Ansible host setup
+  - 'sudo docker exec --tty "$(cat ${container_id})" env TERM=xterm ansible all -i "localhost," -c local -m setup'
+
+  # Install dependencies
+  - 'sudo docker exec --tty "$(cat ${container_id})" env TERM=xterm ansible-galaxy install geerlingguy.java'
+  - 'sudo docker exec --tty "$(cat ${container_id})" env TERM=xterm ansible-playbook /etc/ansible/roles/role_under_test/tests/dependencies.yml'
+
+  # Ansible syntax check.
+  - 'sudo docker exec --tty "$(cat ${container_id})" env TERM=xterm ansible-playbook /etc/ansible/roles/role_under_test/tests/playbook.yml --syntax-check'
+
+  # Test role.
+  - 'sudo docker exec --tty "$(cat ${container_id})" env TERM=xterm ansible-playbook /etc/ansible/roles/role_under_test/tests/playbook.yml'
+
+  # Test role idempotence.
+  - idempotence=$(mktemp)
+  - sudo docker exec "$(cat ${container_id})" ansible-playbook /etc/ansible/roles/role_under_test/tests/playbook.yml | tee -a ${idempotence}
+  - >
+    tail ${idempotence}
+    | grep -q 'changed=0.*failed=0'
+    && (echo 'Idempotence test: pass' && exit 0)
+    || (echo 'Idempotence test: fail' && exit 1)
 
-  # Run the ansible ci playbook
-  - "ansible-playbook -i ci/inventory ci/playbook.yml --connection=local --sudo -vvvv"
+  # Test role.
+  - 'sudo docker exec --tty "$(cat ${container_id})" env TERM=xterm ansible-playbook /etc/ansible/roles/role_under_test/tests/test.yml'
 
-  # Run the ansible hosts list
-  - "ansible-playbook -i ci/inventory ci/hosts_list.yml --connection=local --sudo -vvvv"
+  # View container logs
+  - 'sudo docker logs "$(cat ${container_id})"'
 
-  # Run the ansible hosts hash
-  - "ansible-playbook -i ci/inventory ci/hosts_hash.yml --connection=local --sudo -vvvv"
+  # Clean up.
+  - 'sudo docker stop "$(cat ${container_id})"'
 
 notifications:
   webhooks: https://galaxy.ansible.com/api/v1/notifications/

handlers/main.yml

@@ -1,3 +1,7 @@
 ---
 - name: Restart zookeeper
   service: name=zookeeper state=restarted
+
+- name: Reload systemctl daemon
+  command: systemctl daemon-reload
+  when: ansible_service_mgr == 'systemd'

tasks/systemd.yml

@@ -1,10 +1,7 @@
 ---
-- name: Check if systemd exists
-  stat: path=/usr/lib/systemd/system/
-  register: systemd_check
-
 - name: Systemd script.
-  template: src=zookeeper.service.j2 dest=/usr/lib/systemd/system/zookeeper.service
-  when: systemd_check.stat.exists == true
+  template: src=zookeeper.service.j2 dest=/lib/systemd/system/zookeeper.service
+  when: ansible_service_mgr == 'systemd'
   notify:
+    - Reload systemctl daemon
     - Restart zookeeper

tasks/tarball.yml

@@ -17,16 +17,15 @@
 - user: name=zookeeper group=zookeeper system=yes
 
 - name: Change ownership on zookeeper directory.
-  file: path={{zookeeper_dir}} state=directory owner=zookeeper group=zookeeper recurse=yes
+  file: path={{zookeeper_dir}} state=directory owner=zookeeper group=zookeeper
   tags: bootstrap
 
-- name: Create zookeeper data folder.
-  file: path={{data_dir}} state=directory recurse=yes owner=zookeeper group=zookeeper
-  tags: bootstrap
-
-- name: Create zookeeper logs folder.
-  file: path={{log_dir}} state=directory recurse=yes owner=zookeeper group=zookeeper
+- name: "Create zookeeper {{item}} directory."
+  file: path={{item}} state=directory owner=zookeeper group=zookeeper
   tags: bootstrap
+  with_items:
+    - "{{data_dir}}"
+    - "{{log_dir}}"
 
 - name: Write myid file.
   template: src=myid.j2 dest={{data_dir}}/myid owner=zookeeper group=zookeeper

tasks/upstart.yml

@@ -5,6 +5,8 @@
 
 - name: Upstart script.
   template: src=zookeeper.conf.j2 dest=/etc/init/zookeeper.conf
-  when: etc_init.stat.exists == true
+  when:
+    - etc_init.stat.exists == true
+    - ansible_service_mgr != 'systemd'
   notify:
     - Restart zookeeper

tests/dependencies.yml

@@ -0,0 +1,6 @@
+---
+- hosts: localhost
+  connection: local
+  remote_user: root
+  roles:
+    - role: geerlingguy.java

tests/playbook.yml

@@ -0,0 +1,6 @@
+---
+- hosts: localhost
+  connection: local
+  remote_user: root
+  roles:
+    - role: role_under_test

tests/test.yml

@@ -0,0 +1,57 @@
+---
+- hosts: localhost
+  connection: local
+  remote_user: root
+  tasks:
+    - shell: "ps aux | grep -i zookeeper"
+      register: status
+      failed_when: status.rc != 0
+      when: ansible_service_mgr != 'systemd'
+
+    - shell: "systemctl status zookeeper | grep running"
+      register: status
+      failed_when: status.rc != 0
+      when: ansible_service_mgr == 'systemd'
+
+#
+# Host hash playbook
+#
+
+- hosts: localhost
+  connection: local
+  remote_user: root
+  roles:
+    - role: role_under_test
+      zookeeper_hosts:
+        - host: "{{inventory_hostname}}" # the machine running
+          id: 2
+
+- hosts: localhost
+  connection: local
+  remote_user: root
+  tasks:
+    # Expecting myid to be 2 as defined in zookeeper_hosts variable
+    - shell: "grep 2 /var/lib/zookeeper/myid"
+      register: status
+      failed_when: status.rc != 0
+
+#
+# Host list playbook
+#
+
+- hosts: localhost
+  connection: local
+  remote_user: root
+  roles:
+    - role: role_under_test
+      zookeeper_hosts:
+        - "{{inventory_hostname}}"
+
+- hosts: localhost
+  connection: local
+  remote_user: root
+  tasks:
+      # Expecting myid to be 1 defined by loop.index
+    - shell: "grep 1 /var/lib/zookeeper/myid"
+      register: status
+      failed_when: status.rc != 0