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<?php
namespace Illuminate\Cache;
use Closure;
use DateTime;
use ArrayAccess;
use Carbon\Carbon;
use BadMethodCallException;
use Illuminate\Contracts\Cache\Store;
use Illuminate\Support\Traits\Macroable;
use Illuminate\Contracts\Events\Dispatcher;
use Illuminate\Contracts\Cache\Repository as CacheContract;
class Repository implements CacheContract, ArrayAccess
{
use Macroable {
__call as macroCall;
}
/**
* The cache store implementation.
*
* @var \Illuminate\Contracts\Cache\Store
*/
protected $store;
/**
* The event dispatcher implementation.
*
* @var \Illuminate\Contracts\Events\Dispatcher
*/
protected $events;
/**
* The default number of minutes to store items.
*
* @var int
*/
protected $default = 60;
/**
* Create a new cache repository instance.
*
* @param \Illuminate\Contracts\Cache\Store $store
* @return void
*/
public function __construct(Store $store)
{
$this->store = $store;
}
/**
* Set the event dispatcher instance.
*
* @param \Illuminate\Contracts\Events\Dispatcher $events
* @return void
*/
public function setEventDispatcher(Dispatcher $events)
{
$this->events = $events;
}
/**
* Fire an event for this cache instance.
*
* @param string $event
* @param array $payload
* @return void
*/
protected function fireCacheEvent($event, $payload)
{
if (! isset($this->events)) {
return;
}
switch ($event) {
case 'hit':
if (count($payload) == 2) {
$payload[] = [];
}
return $this->events->fire(new Events\CacheHit($payload[0], $payload[1], $payload[2]));
case 'missed':
if (count($payload) == 1) {
$payload[] = [];
}
return $this->events->fire(new Events\CacheMissed($payload[0], $payload[1]));
case 'delete':
if (count($payload) == 1) {
$payload[] = [];
}
return $this->events->fire(new Events\KeyForgotten($payload[0], $payload[1]));
case 'write':
if (count($payload) == 3) {
$payload[] = [];
}
return $this->events->fire(new Events\KeyWritten($payload[0], $payload[1], $payload[2], $payload[3]));
}
}
/**
* Determine if an item exists in the cache.
*
* @param string $key
* @return bool
*/
public function has($key)
{
return ! is_null($this->get($key));
}
/**
* Retrieve an item from the cache by key.
*
* @param string $key
* @param mixed $default
* @return mixed
*/
public function get($key, $default = null)
{
if (is_array($key)) {
return $this->many($key);
}
$value = $this->store->get($this->itemKey($key));
if (is_null($value)) {
$this->fireCacheEvent('missed', [$key]);
$value = value($default);
} else {
$this->fireCacheEvent('hit', [$key, $value]);
}
return $value;
}
/**
* Retrieve multiple items from the cache by key.
*
* Items not found in the cache will have a null value.
*
* @param array $keys
* @return array
*/
public function many(array $keys)
{
$normalizedKeys = [];
foreach ($keys as $key => $value) {
$normalizedKeys[] = is_string($key) ? $key : $value;
}
$values = $this->store->many($normalizedKeys);
foreach ($values as $key => &$value) {
if (is_null($value)) {
$this->fireCacheEvent('missed', [$key]);
$value = isset($keys[$key]) ? value($keys[$key]) : null;
} else {
$this->fireCacheEvent('hit', [$key, $value]);
}
}
return $values;
}
/**
* Retrieve an item from the cache and delete it.
*
* @param string $key
* @param mixed $default
* @return mixed
*/
public function pull($key, $default = null)
{
$value = $this->get($key, $default);
$this->forget($key);
return $value;
}
/**
* Store an item in the cache.
*
* @param string $key
* @param mixed $value
* @param \DateTime|int $minutes
* @return void
*/
public function put($key, $value, $minutes = null)
{
if (is_array($key) && filter_var($value, FILTER_VALIDATE_INT) !== false) {
return $this->putMany($key, $value);
}
$minutes = $this->getMinutes($minutes);
if (! is_null($minutes)) {
$this->store->put($this->itemKey($key), $value, $minutes);
$this->fireCacheEvent('write', [$key, $value, $minutes]);
}
}
/**
* Store multiple items in the cache for a given number of minutes.
*
* @param array $values
* @param int $minutes
* @return void
*/
public function putMany(array $values, $minutes)
{
$minutes = $this->getMinutes($minutes);
if (! is_null($minutes)) {
$this->store->putMany($values, $minutes);
foreach ($values as $key => $value) {
$this->fireCacheEvent('write', [$key, $value, $minutes]);
}
}
}
/**
* Store an item in the cache if the key does not exist.
*
* @param string $key
* @param mixed $value
* @param \DateTime|int $minutes
* @return bool
*/
public function add($key, $value, $minutes)
{
$minutes = $this->getMinutes($minutes);
if (is_null($minutes)) {
return false;
}
if (method_exists($this->store, 'add')) {
return $this->store->add($this->itemKey($key), $value, $minutes);
}
if (is_null($this->get($key))) {
$this->put($key, $value, $minutes);
return true;
}
return false;
}
/**
* Store an item in the cache indefinitely.
*
* @param string $key
* @param mixed $value
* @return void
*/
public function forever($key, $value)
{
$this->store->forever($this->itemKey($key), $value);
$this->fireCacheEvent('write', [$key, $value, 0]);
}
/**
* Get an item from the cache, or store the default value.
*
* @param string $key
* @param \DateTime|int $minutes
* @param \Closure $callback
* @return mixed
*/
public function remember($key, $minutes, Closure $callback)
{
// If the item exists in the cache we will just return this immediately
// otherwise we will execute the given Closure and cache the result
// of that execution for the given number of minutes in storage.
if (! is_null($value = $this->get($key))) {
return $value;
}
$this->put($key, $value = $callback(), $minutes);
return $value;
}
/**
* Get an item from the cache, or store the default value forever.
*
* @param string $key
* @param \Closure $callback
* @return mixed
*/
public function sear($key, Closure $callback)
{
return $this->rememberForever($key, $callback);
}
/**
* Get an item from the cache, or store the default value forever.
*
* @param string $key
* @param \Closure $callback
* @return mixed
*/
public function rememberForever($key, Closure $callback)
{
// If the item exists in the cache we will just return this immediately
// otherwise we will execute the given Closure and cache the result
// of that execution for the given number of minutes. It's easy.
if (! is_null($value = $this->get($key))) {
return $value;
}
$this->forever($key, $value = $callback());
return $value;
}
/**
* Remove an item from the cache.
*
* @param string $key
* @return bool
*/
public function forget($key)
{
$success = $this->store->forget($this->itemKey($key));
$this->fireCacheEvent('delete', [$key]);
return $success;
}
/**
* Begin executing a new tags operation if the store supports it.
*
* @param array|mixed $names
* @return \Illuminate\Cache\TaggedCache
*
* @throws \BadMethodCallException
*/
public function tags($names)
{
if (method_exists($this->store, 'tags')) {
$taggedCache = $this->store->tags($names);
if (! is_null($this->events)) {
$taggedCache->setEventDispatcher($this->events);
}
$taggedCache->setDefaultCacheTime($this->default);
return $taggedCache;
}
throw new BadMethodCallException('This cache store does not support tagging.');
}
/**
* Format the key for a cache item.
*
* @param string $key
* @return string
*/
protected function itemKey($key)
{
return $key;
}
/**
* Get the default cache time.
*
* @return int
*/
public function getDefaultCacheTime()
{
return $this->default;
}
/**
* Set the default cache time in minutes.
*
* @param int $minutes
* @return void
*/
public function setDefaultCacheTime($minutes)
{
$this->default = $minutes;
}
/**
* Get the cache store implementation.
*
* @return \Illuminate\Contracts\Cache\Store
*/
public function getStore()
{
return $this->store;
}
/**
* Determine if a cached value exists.
*
* @param string $key
* @return bool
*/
public function offsetExists($key)
{
return $this->has($key);
}
/**
* Retrieve an item from the cache by key.
*
* @param string $key
* @return mixed
*/
public function offsetGet($key)
{
return $this->get($key);
}
/**
* Store an item in the cache for the default time.
*
* @param string $key
* @param mixed $value
* @return void
*/
public function offsetSet($key, $value)
{
$this->put($key, $value, $this->default);
}
/**
* Remove an item from the cache.
*
* @param string $key
* @return void
*/
public function offsetUnset($key)
{
$this->forget($key);
}
/**
* Calculate the number of minutes with the given duration.
*
* @param \DateTime|int $duration
* @return int|null
*/
protected function getMinutes($duration)
{
if ($duration instanceof DateTime) {
$fromNow = Carbon::now()->diffInMinutes(Carbon::instance($duration), false);
return $fromNow > 0 ? $fromNow : null;
}
return is_string($duration) ? (int) $duration : $duration;
}
/**
* Handle dynamic calls into macros or pass missing methods to the store.
*
* @param string $method
* @param array $parameters
* @return mixed
*/
public function __call($method, $parameters)
{
if (static::hasMacro($method)) {
return $this->macroCall($method, $parameters);
}
return call_user_func_array([$this->store, $method], $parameters);
}
/**
* Clone cache repository instance.
*
* @return void
*/
public function __clone()
{
$this->store = clone $this->store;
}
}