<?php
  
  namespace Illuminate\Contracts\Queue;
  
  interface Queue
  {
      /**
       * Get the size of the queue.
       *
       * @param  string|null  $queue
       * @return int
       */
      public function size($queue = null);
  
      /**
       * Push a new job onto the queue.
       *
       * @param  string|object  $job
       * @param  mixed  $data
       * @param  string|null  $queue
       * @return mixed
       */
      public function push($job, $data = '', $queue = null);
  
      /**
       * Push a new job onto the queue.
       *
       * @param  string  $queue
       * @param  string|object  $job
       * @param  mixed  $data
       * @return mixed
       */
      public function pushOn($queue, $job, $data = '');
  
      /**
       * Push a raw payload onto the queue.
       *
       * @param  string  $payload
       * @param  string|null  $queue
       * @param  array  $options
       * @return mixed
       */
      public function pushRaw($payload, $queue = null, array $options = []);
  
      /**
       * Push a new job onto the queue after a delay.
       *
       * @param  \DateTimeInterface|\DateInterval|int  $delay
       * @param  string|object  $job
       * @param  mixed  $data
       * @param  string|null  $queue
       * @return mixed
       */
      public function later($delay, $job, $data = '', $queue = null);
  
      /**
       * Push a new job onto the queue after a delay.
       *
       * @param  string  $queue
       * @param  \DateTimeInterface|\DateInterval|int  $delay
       * @param  string|object  $job
       * @param  mixed  $data
       * @return mixed
       */
      public function laterOn($queue, $delay, $job, $data = '');
  
      /**
       * Push an array of jobs onto the queue.
       *
       * @param  array  $jobs
       * @param  mixed  $data
       * @param  string|null  $queue
       * @return mixed
       */
      public function bulk($jobs, $data = '', $queue = null);
  
      /**
       * Pop the next job off of the queue.
       *
       * @param  string|null  $queue
       * @return \Illuminate\Contracts\Queue\Job|null
       */
      public function pop($queue = null);
  
      /**
       * Get the connection name for the queue.
       *
       * @return string
       */
      public function getConnectionName();
  
      /**
       * Set the connection name for the queue.
       *
       * @param  string  $name
       * @return $this
       */
      public function setConnectionName($name);
  }