public function __construct(TaskInterface $task, $constructorParameters)
{
// TODO: If we ever want to convert the simulated task back into
// an executable task, then we should save the wrapped task.
$this->task = $task instanceof WrappedTaskInterface ? $task->original() : $task;
$this->constructorParameters = $constructorParameters;
}
/**
* @param \Robo\Result|\Robo\Contract\TaskInterface $result
* @param \Consolidation\AnnotatedCommand\CommandData $commandData
*
* @return null|\Robo\Result
*/
public function process($result, CommandData $commandData)
{
if ($result instanceof TaskInterface) {
try {
return $result->run();
} catch (\Exception $e) {
return Result::fromException($result, $e);
}
}
}
/**
* Before running this task, register its rollback and completion
* handlers on its collection. The reason this class exists is to
* defer registration of rollback and completion tasks until 'run()' time.
*
* @return \Robo\Result
*/
public function run()
{
if ($this->rollbackTask) {
$this->collection->registerRollback($this->rollbackTask);
}
if ($this->task instanceof RollbackInterface) {
$this->collection->registerRollback(new CallableTask([$this->task, 'rollback'], $this->task));
}
if ($this->task instanceof CompletionInterface) {
$this->collection->registerCompletion(new CallableTask([$this->task, 'complete'], $this->task));
}
return $this->task->run();
}
/**
* Danger: reach through the simulated wrapper and pull out the command
* to be executed. This is used when using a simulated task with another
* simulated task that runs commands, e.g. the Remote\Ssh task. Using
* a simulated CommandInterface task with a non-simulated task may produce
* unexpected results (e.g. execution!).
*
* @return string
*
* @throws \Robo\Exception\TaskException
*/
public function getCommand()
{
if (!$this->task instanceof CommandInterface) {
throw new TaskException($this->task, 'Simulated task that is not a CommandInterface used as a CommandInterface.');
}
return $this->task->getCommand();
}
/**
* If there is a single task, run it; if there is a collection, run
* all of its tasks.
*
* @return \Robo\Result
*/
protected function runTasks()
{
if (!$this->collection && $this->currentTask) {
return $this->currentTask->run();
}
return $this->getCollection()->run();
}
/**
* @param TaskInterface|NestedCollectionInterface|WrappedTaskInterface $task
* @param $parentCollection
*/
protected function setParentCollectionForTask($task, $parentCollection)
{
if ($task instanceof NestedCollectionInterface) {
$task->setParentCollection($parentCollection);
}
}
/**
* @param TaskInterface $task
*
* @return Result
*/
private function runSilently(TaskInterface $task)
{
$this->suppressOutput();
$result = $task->run();
$this->restoreOutput();
return $result;
}
/**
* Create a TaskWrapper.
*
* Temporary tasks are always wrapped in a TaskWrapper, as are
* any tasks that are added to a collection. If a temporary task
* is added to a collection, then it is first unwrapped from its
* TaskWrapper (via its getTask method), and then added to a
* new TaskWrapper for the collection it is added to.
*
* In this way, when the TaskWrapper is finally executed, the
* task's rollback and completion handlers will be registered on
* whichever collection it was registered on.
*/
public function __construct(Collection $collection, TaskInterface $task, TaskInterface $rollbackTask = null)
{
$this->collection = $collection;
$this->task = $task instanceof self ? $task->getTask() : $task;
$this->rollbackTask = $rollbackTask;
}
/**
* Wrap the provided task in a wrapper that will ignore
* any errors or exceptions that may be produced. This
* is useful, for example, in adding optional cleanup tasks
* at the beginning of a task collection, to remove previous
* results which may or may not exist.
*
* TODO: Provide some way to specify which sort of errors
* are ignored, so that 'file not found' may be ignored,
* but 'permission denied' reported?
*/
public function ignoreErrorsTaskWrapper(TaskInterface $task)
{
// If the task is a stack-based task, then tell it
// to try to run all of its operations, even if some
// of them fail.
if ($task instanceof StackBasedTask) {
$task->stopOnFail(false);
}
$ignoreErrorsInTask = function () use($task) {
$data = [];
try {
$result = $this->runSubtask($task);
$message = $result->getMessage();
$data = $result->getData();
$data['exitcode'] = $result->getExitCode();
} catch (\Exception $e) {
$message = $e->getMessage();
}
return Result::success($task, $message, $data);
};
// Wrap our ignore errors callable in a task.
return new CallableTask($ignoreErrorsInTask, $this);
}
/**
* Create a CompletionWrapper.
*
* Temporary tasks are always wrapped in a CompletionWrapper, as are
* any tasks that are added to a collection. If a temporary task
* is added to a collection, then it is first unwrapped from its
* CompletionWrapper (via its original() method), and then added to a
* new CompletionWrapper for the collection it is added to.
*
* In this way, when the CompletionWrapper is finally executed, the
* task's rollback and completion handlers will be registered on
* whichever collection it was registered on.
*/
public function __construct(Collection $collection, TaskInterface $task, TaskInterface $rollbackTask = null)
{
$this->collection = $collection;
$this->task = $task instanceof WrappedTaskInterface ? $task->original() : $task;
$this->rollbackTask = $rollbackTask;
}