vendor/sulu/sulu/src/Sulu/Component/Cache/Memoize.php line 77

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  1. <?php
  3. /*
  4. * This file is part of Sulu.
  5. *
  6. * (c) Sulu GmbH
  7. *
  8. * This source file is subject to the MIT license that is bundled
  9. * with this source code in the file LICENSE.
  10. */
  12. namespace Sulu\Component\Cache;
  14. use Doctrine\Common\Cache\CacheProvider;
  15. use Symfony\Contracts\Service\ResetInterface;
  17. /**
  18. * Memoizer which uses Doctrine Cache to save data.
  19. */
  20. class Memoize implements MemoizeInterface, ResetInterface
  21. {
  22. /**
  23. * @var CacheProvider
  24. */
  25. protected $cache;
  27. /**
  28. * @var int
  29. */
  30. protected $defaultLifeTime;
  32. /**
  33. * Constructor.
  34. */
  35. public function __construct(CacheProvider $cache, $defaultLifeTime)
  36. {
  37. $this->cache = $cache;
  38. $this->defaultLifeTime = $defaultLifeTime;
  39. }
  41. public function memoize($compute, $lifeTime = null)
  42. {
  43. // used to get information of the caller
  44. // returns a callstack (0 is current function, 1 is caller function)
  45. $callers = \debug_backtrace();
  47. if (
  48. !isset($callers[1])
  49. || !isset($callers[1]['class'])
  50. || !isset($callers[1]['function'])
  51. || !isset($callers[1]['args'])
  52. ) {
  53. throw new \InvalidArgumentException();
  54. }
  56. // build cache key
  57. $id = \sprintf('%s::%s', $callers[1]['class'], $callers[1]['function']);
  59. return $this->memoizeById($id, $callers[1]['args'], $compute, $lifeTime);
  60. }
  62. public function memoizeById($id, $arguments, $compute, $lifeTime = null)
  63. {
  64. // determine lifetime
  65. if (null === $lifeTime) {
  66. $lifeTime = $this->defaultLifeTime;
  67. }
  69. // determine cache key
  70. $id = \md5(\sprintf('%s(%s)', $id, \serialize($arguments)));
  72. // memoize pattern: save result for arguments once and
  73. // return the value from cache if it is called more than once
  74. if ($this->cache->contains($id)) {
  75. return $this->cache->fetch($id);
  76. } else {
  77. $value = \call_user_func_array($compute, $arguments);
  78. $this->cache->save($id, $value, $lifeTime);
  80. return $value;
  81. }
  82. }
  84. /**
  85. * @return void
  86. */
  87. public function reset()
  88. {
  89. $this->cache->flushAll();
  90. }
  91. }