php-ansible library

This library is a OOP-wrapper for the ansible provisioning tool. I intend to use this library for a symfony2 bundle and also a deployment GUI, based on php/symfony2. The current implementation is feature-complete for the ansible-playbook and ansible-galaxy commands.

Prerequisites

Your OS should be a flavor of linux and ansible has to be installed. It's easiest if ansible is in PATH :-) The library tries to find ansible-playbook and ansible-galaxy by itself or use the paths/executables you provide.

Usage

First instantiate the base object which works as a factory for the commands. Only the first parameter is mandatory, and provides the library with the path to your ansible deployment file structure.

$ansible = new Ansible(
    '/path/to/ansible/deployment'
);

Optionally, you can specify the path of your ansible-playbook and ansible-galaxy commands, just in case they are not in the PATH.

$ansible = new Ansible(
    '/path/to/ansible/deployment',
    '/optional/path/to/command/ansible-playbook',
    '/optional/path/to/command/ansible-galaxy'
);

You can also pass any PSR compliant logging class to have further details logged. This is especially useful to have the actual run command logged.

$ansible = new Ansible(
    '/path/to/ansible/deployment'
);

// $logger is a PSR-compliant logging implementation (e.g. monolog)
$ansible->setLogger($logger);

Playbooks

Then you can use the object just like in your previous ansible deployment. If you don't specify an inventory file with ->inventoryFile('filename'), the wrapper tries to determine one, based on your playbook name:

$ansible
    ->playbook()
    ->play('mydeployment.yml') // based on deployment root 
    ->user('maschmann')
    ->extraVars(['project_release' => 20150514092022])
    ->limit('test')
    ->execute();

This will create following ansible command:

$ ansible-playbook mydeployment.yml -i mydeployment --user=maschmann --extra-vars="project-release=20150514092022" --limit=test

For the execute command you can use a callback to get real-time output of the command:

$ansible
    ->playbook()
    ->play('mydeployment.yml') // based on deployment root 
    ->user('maschmann')
    ->extraVars(['project_release' => 20150514092022])
    ->limit('test')
    ->execute(function ($type, $buffer) {
        if (Process::ERR === $type) {
            echo 'ERR > '.$buffer;
        } else {
            echo 'OUT > '.$buffer;
        }
    });

If no callback is given, the method will return the ansible-playbook output as a string, so you can either echo or directly pipe it into a log/whatever.

You can also pass an external YML/JSON file as extraVars containing a complex data structure to be passed to Ansible:

$ansible
    ->playbook()
    ->play('mydeployment.yml') // based on deployment root 
    ->extraVars('/path/to/your/extra/vars/file.yml')
    ->execute();

You can have a Json output adding json() option that enable 'ANSIBLE_STDOUT_CALLBACK=json' env vars to make a json output in ansible.

$ansible
    ->playbook()
    ->json()
    ->play('mydeployment.yml') // based on deployment root 
    ->extraVars('/path/to/your/extra/vars/file.yml')
    ->execute();

Galaxy

The syntax follows ansible's syntax with one deviation: list is a reserved keyword in php (array context) and therefore I had to rename it to "modulelist()".

$ansible
    ->galaxy()
    ->init('my_role')
    ->initPath('/tmp/my_path') // or default ansible roles path
    ->execute();

would generate:

$ ansible-galaxy init my_role --init-path=/tmp/my_path

You can access all galaxy commands:

• init()
• info()
• install()
• help()
• modulelist()
• remove()

You can combine the calls with their possible arguments, though I don't have any logic preventing e.g. --force from being applied to e.g. info().

Possible arguments/options:

• initPath()
• offline()
• server()
• force()
• roleFile()
• rolesPath()
• ignoreErrors()
• noDeps()

Process timeout

Default process timeout is set to 300 seconds. If you need more time to execute your processes: Adjust the timeout :-)

$ansible
    ->galaxy()
    ->setTimeout(600)
    …

Development

You can use the provided docker image with make build which uses a default php-cli docker image and ansible 2.x. See the Dockerfile for more info.
Start the container with make up.
Composer install: make vendor
You can run code or the tests within the container: make test c="--testdox"

Thank you for your contributions!

thank you for reviewing, bug reporting, suggestions and PRs :-) xabbuh, emielmolenaar, saverio, soupdiver, linaori, paveldanilin and many others!

Future features

The Next steps for implementation are:

• improve type handling and structure, due to overall complexity of the playbook at the moment
• scalar typehints all over the place
• provide docker support for development
• wrapping the library into a bundle -> maybe
• provide commandline-capabilities -> maybe

License

php-ansible is licensed under the MIT license. See the LICENSE for the full license text.