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<?php
declare(strict_types=1);
namespace Crustum\BatchQueue\Job;
use Cake\Queue\Job\JobInterface;
use Cake\Queue\Job\Message;
/**
* Example Job - Regular job that can be used in batches or standalone
*
* This job is completely unaware of batches. When used in batch context,
* the BatchJobProcessor handles all batch coordination.
*/
class ExampleJob implements JobInterface
{
/**
* Execute the job
*
* @param \Cake\Queue\Job\Message $message Job message
* @return string|null Job result
*/
public function execute(Message $message): ?string
{
$args = $message->getArgument();
$compensationContext = $args['_compensation'] ?? null;
$previousResults = $args['_previous_results'] ?? [];
if ($compensationContext) {
$result = $this->performCompensation($compensationContext);
} else {
$result = $this->performWork($args, $previousResults);
}
return json_encode($result);
}
/**
* Perform the actual work
*
* @param array $args Job arguments
* @param array $previousResults Results from previous jobs (sequential only)
* @return array Work result
*/
private function performWork(array $args, array $previousResults): array
{
$data = $args['data'] ?? 'default data';
if (!empty($previousResults)) {
$data = $this->combineWithPreviousResults($data, $previousResults);
}
sleep(1);
return [
'processed_data' => $data,
'timestamp' => time(),
'job_class' => static::class,
];
}
/**
* Perform compensation (undo operation)
*
* @param array $compensationContext Compensation context
* @return array Compensation result
*/
private function performCompensation(array $compensationContext): array
{
$originalJobClass = $compensationContext['original_job_class'];
$originalJobId = $compensationContext['original_job_id'];
return [
'compensated_job' => $originalJobClass,
'compensated_job_id' => $originalJobId,
'compensation_performed_at' => time(),
];
}
/**
* Combine current data with previous results from chain
*
* @param mixed $currentData Current job data
* @param array $previousResults Previous job results
* @return mixed Combined data
*/
private function combineWithPreviousResults(mixed $currentData, array $previousResults): mixed
{
return [
'current' => $currentData,
'previous' => $previousResults,
'chain_position' => count($previousResults) + 1,
];
}
}