Tasks

Use task() to define a task. Add a description with desc() before the task:

desc('My task');
task('my_task', function () {
    // ...
});

Pass only the name to fetch an existing task and chain config on it:

task('my_task')->disable();

Task config

These methods are chained off task('name') to configure behavior.

desc()

Set the task's description (shown by dep list).

task('deploy', function () {
    // ...
})->desc('Task description');

Equivalent to the desc() helper:

desc('Task description');
task('deploy', function () {
    // ...
});

once()

Run the task on a single host instead of all selected hosts.

oncePerNode()

Run the task once per node, where a node is identified by hostname. Useful when several host aliases point at the same physical machine.

host('foo')->setHostname('example.com');
host('bar')->setHostname('example.com');
host('pro')->setHostname('another.com');

task('apt:update', function () {
    // Runs twice: once for foo/bar (same hostname), once for pro.
    run('apt-get update');
})->oncePerNode();

hidden()

Hide the task from dep list.

addBefore()

Attach a before-hook. Same as before() but chained off the task.

addAfter()

Attach an after-hook. Same as after() but chained off the task.

limit()

Cap the number of hosts the task runs on concurrently. Defaults to unlimited.

select()

Restrict the task to hosts matching a selector. Replaces any previous selector on the task.

addSelector()

Add another selector clause (OR). The task runs on hosts that match select() or any added selector.

verbose()

Always run the task as if -v were passed.

disable()

Disable the task. Disabled tasks do not run, even when invoked.

enable()

Re-enable a task that was disabled.

Task grouping

Pass an array of task names to define a group task that runs them in order:

task('deploy', [
    'deploy:prepare',
    'deploy:update_code',
    'deploy:vendors',
    'deploy:symlink',
    'cleanup',
]);

Task hooks

Run a task before or after another:

task('deploy:done', function () {
    writeln('Deploy done!');
});

after('deploy', 'deploy:done');

deploy:done runs after deploy finishes.

note

Inspect attached hooks with:

dep tree deploy