<?php
  
  namespace Illuminate\Contracts\Cache;
  
  interface Lock
  {
      /**
       * Attempt to acquire the lock.
       *
       * @param  callable|null  $callback
       * @return mixed
       */
      public function get($callback = null);
  
      /**
       * Attempt to acquire the lock for the given number of seconds.
       *
       * @param  int  $seconds
       * @param  callable|null  $callback
       * @return bool
       */
      public function block($seconds, $callback = null);
  
      /**
       * Release the lock.
       *
       * @return bool
       */
      public function release();
  
      /**
       * Returns the current owner of the lock.
       *
       * @return string
       */
      public function owner();
  
      /**
       * Releases this lock in disregard of ownership.
       *
       * @return void
       */
      public function forceRelease();
  }