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ApcStore.php	2.455KB	edt ren
ApcWrapper.php	1.93KB	edt ren
ArrayLock.php	2.099KB	edt ren
ArrayStore.php	4.674KB	edt ren
CacheLock.php	1.794KB	edt ren
CacheManager.php	10.639KB	edt ren
CacheServiceProvider.php	1.318KB	edt ren
DatabaseLock.php	3.761KB	edt ren
DatabaseStore.php	10.863KB	edt ren
DynamoDbLock.php	1.545KB	edt ren
DynamoDbStore.php	14.597KB	edt ren
FileLock.php	0.265KB	edt ren
FileStore.php	9.673KB	edt ren
HasCacheLock.php	0.665KB	edt ren
LICENSE.md	1.05KB	edt ren
Lock.php	3.497KB	edt ren
LuaScripts.php	0.451KB	edt ren
MemcachedConnector.php	2.326KB	edt ren
MemcachedLock.php	1.419KB	edt ren
MemcachedStore.php	6.178KB	edt ren
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PhpRedisLock.php	0.81KB	edt ren
RateLimiter.php	4.927KB	edt ren
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RedisStore.php	10.136KB	edt ren
RedisTagSet.php	3.127KB	edt ren
RedisTaggedCache.php	3.041KB	edt ren
Repository.php	16.702KB	edt ren
RetrievesMultipleKeys.php	1.128KB	edt ren
TagSet.php	2.458KB	edt ren
TaggableStore.php	0.411KB	edt ren
TaggedCache.php	2.501KB	edt ren
composer.json	1.485KB	edt ren

<?php

namespace Illuminate\Cache;

use Closure;
use Illuminate\Contracts\Cache\LockProvider;
use Illuminate\Contracts\Cache\Store;
use Illuminate\Database\ConnectionInterface;
use Illuminate\Database\PostgresConnection;
use Illuminate\Database\QueryException;
use Illuminate\Database\SqlServerConnection;
use Illuminate\Support\InteractsWithTime;
use Illuminate\Support\Str;

class DatabaseStore implements LockProvider, Store
{
    use InteractsWithTime, RetrievesMultipleKeys;

/**
     * The database connection instance.
     *
     * @var \Illuminate\Database\ConnectionInterface
     */
    protected $connection;

/**
     * The database connection instance that should be used to manage locks.
     *
     * @var \Illuminate\Database\ConnectionInterface
     */
    protected $lockConnection;

/**
     * The name of the cache table.
     *
     * @var string
     */
    protected $table;

/**
     * A string that should be prepended to keys.
     *
     * @var string
     */
    protected $prefix;

/**
     * The name of the cache locks table.
     *
     * @var string
     */
    protected $lockTable;

/**
     * An array representation of the lock lottery odds.
     *
     * @var array
     */
    protected $lockLottery;

/**
     * The default number of seconds that a lock should be held.
     *
     * @var int
     */
    protected $defaultLockTimeoutInSeconds;

/**
     * Create a new database store.
     *
     * @param  \Illuminate\Database\ConnectionInterface  $connection
     * @param  string  $table
     * @param  string  $prefix
     * @param  string  $lockTable
     * @param  array  $lockLottery
     * @return void
     */
    public function __construct(ConnectionInterface $connection,
                                                    $table,
                                                    $prefix = '',
                                                    $lockTable = 'cache_locks',
                                                    $lockLottery = [2, 100],
                                                    $defaultLockTimeoutInSeconds = 86400)
    {
        $this->table = $table;
        $this->prefix = $prefix;
        $this->connection = $connection;
        $this->lockTable = $lockTable;
        $this->lockLottery = $lockLottery;
        $this->defaultLockTimeoutInSeconds = $defaultLockTimeoutInSeconds;
    }

/**
     * Retrieve an item from the cache by key.
     *
     * @param  string|array  $key
     * @return mixed
     */
    public function get($key)
    {
        $prefixed = $this->prefix.$key;

$cache = $this->table()->where('key', '=', $prefixed)->first();

// If we have a cache record we will check the expiration time against current
        // time on the system and see if the record has expired. If it has, we will
        // remove the records from the database table so it isn't returned again.
        if (is_null($cache)) {
            return;
        }

$cache = is_array($cache) ? (object) $cache : $cache;

// If this cache expiration date is past the current time, we will remove this
        // item from the cache. Then we will return a null value since the cache is
        // expired. We will use "Carbon" to make this comparison with the column.
        if ($this->currentTime() >= $cache->expiration) {
            $this->forgetIfExpired($key);

return;
        }

return $this->unserialize($cache->value);
    }

/**
     * Store an item in the cache for a given number of seconds.
     *
     * @param  string  $key
     * @param  mixed  $value
     * @param  int  $seconds
     * @return bool
     */
    public function put($key, $value, $seconds)
    {
        $key = $this->prefix.$key;
        $value = $this->serialize($value);
        $expiration = $this->getTime() + $seconds;

return $this->table()->upsert(compact('key', 'value', 'expiration'), 'key') > 0;
    }

/**
     * Store an item in the cache if the key doesn't exist.
     *
     * @param  string  $key
     * @param  mixed  $value
     * @param  int  $seconds
     * @return bool
     */
    public function add($key, $value, $seconds)
    {
        if (! is_null($this->get($key))) {
            return false;
        }

$key = $this->prefix.$key;
        $value = $this->serialize($value);
        $expiration = $this->getTime() + $seconds;

$doesntSupportInsertOrIgnore = [SqlServerConnection::class];

if (! in_array(get_class($this->getConnection()), $doesntSupportInsertOrIgnore)) {
            return $this->table()->insertOrIgnore(compact('key', 'value', 'expiration')) > 0;
        }

try {
            return $this->table()->insert(compact('key', 'value', 'expiration'));
        } catch (QueryException) {
            // ...
        }

return false;
    }

/**
     * Increment the value of an item in the cache.
     *
     * @param  string  $key
     * @param  mixed  $value
     * @return int|bool
     */
    public function increment($key, $value = 1)
    {
        return $this->incrementOrDecrement($key, $value, function ($current, $value) {
            return $current + $value;
        });
    }

/**
     * Decrement the value of an item in the cache.
     *
     * @param  string  $key
     * @param  mixed  $value
     * @return int|bool
     */
    public function decrement($key, $value = 1)
    {
        return $this->incrementOrDecrement($key, $value, function ($current, $value) {
            return $current - $value;
        });
    }

/**
     * Increment or decrement an item in the cache.
     *
     * @param  string  $key
     * @param  mixed  $value
     * @param  \Closure  $callback
     * @return int|bool
     */
    protected function incrementOrDecrement($key, $value, Closure $callback)
    {
        return $this->connection->transaction(function () use ($key, $value, $callback) {
            $prefixed = $this->prefix.$key;

$cache = $this->table()->where('key', $prefixed)
                        ->lockForUpdate()->first();

// If there is no value in the cache, we will return false here. Otherwise the
            // value will be decrypted and we will proceed with this function to either
            // increment or decrement this value based on the given action callbacks.
            if (is_null($cache)) {
                return false;
            }

$cache = is_array($cache) ? (object) $cache : $cache;

$current = $this->unserialize($cache->value);

// Here we'll call this callback function that was given to the function which
            // is used to either increment or decrement the function. We use a callback
            // so we do not have to recreate all this logic in each of the functions.
            $new = $callback((int) $current, $value);

if (! is_numeric($current)) {
                return false;
            }

// Here we will update the values in the table. We will also encrypt the value
            // since database cache values are encrypted by default with secure storage
            // that can't be easily read. We will return the new value after storing.
            $this->table()->where('key', $prefixed)->update([
                'value' => $this->serialize($new),
            ]);

return $new;
        });
    }

/**
     * Get the current system time.
     *
     * @return int
     */
    protected function getTime()
    {
        return $this->currentTime();
    }

/**
     * Store an item in the cache indefinitely.
     *
     * @param  string  $key
     * @param  mixed  $value
     * @return bool
     */
    public function forever($key, $value)
    {
        return $this->put($key, $value, 315360000);
    }

/**
     * Get a lock instance.
     *
     * @param  string  $name
     * @param  int  $seconds
     * @param  string|null  $owner
     * @return \Illuminate\Contracts\Cache\Lock
     */
    public function lock($name, $seconds = 0, $owner = null)
    {
        return new DatabaseLock(
            $this->lockConnection ?? $this->connection,
            $this->lockTable,
            $this->prefix.$name,
            $seconds,
            $owner,
            $this->lockLottery,
            $this->defaultLockTimeoutInSeconds
        );
    }

/**
     * Restore a lock instance using the owner identifier.
     *
     * @param  string  $name
     * @param  string  $owner
     * @return \Illuminate\Contracts\Cache\Lock
     */
    public function restoreLock($name, $owner)
    {
        return $this->lock($name, 0, $owner);
    }

/**
     * Remove an item from the cache.
     *
     * @param  string  $key
     * @return bool
     */
    public function forget($key)
    {
        $this->table()->where('key', '=', $this->prefix.$key)->delete();

return true;
    }

/**
     * Remove an item from the cache if it is expired.
     *
     * @param  string  $key
     * @return bool
     */
    public function forgetIfExpired($key)
    {
        $this->table()
            ->where('key', '=', $this->prefix.$key)
            ->where('expiration', '<=', $this->getTime())
            ->delete();

return true;
    }

/**
     * Remove all items from the cache.
     *
     * @return bool
     */
    public function flush()
    {
        $this->table()->delete();

return true;
    }

/**
     * Get a query builder for the cache table.
     *
     * @return \Illuminate\Database\Query\Builder
     */
    protected function table()
    {
        return $this->connection->table($this->table);
    }

/**
     * Get the underlying database connection.
     *
     * @return \Illuminate\Database\ConnectionInterface
     */
    public function getConnection()
    {
        return $this->connection;
    }

/**
     * Specify the name of the connection that should be used to manage locks.
     *
     * @param  \Illuminate\Database\ConnectionInterface  $connection
     * @return $this
     */
    public function setLockConnection($connection)
    {
        $this->lockConnection = $connection;

return $this;
    }

/**
     * Get the cache key prefix.
     *
     * @return string
     */
    public function getPrefix()
    {
        return $this->prefix;
    }

/**
     * Serialize the given value.
     *
     * @param  mixed  $value
     * @return string
     */
    protected function serialize($value)
    {
        $result = serialize($value);

if ($this->connection instanceof PostgresConnection && str_contains($result, "\0")) {
            $result = base64_encode($result);
        }

return $result;
    }

/**
     * Unserialize the given value.
     *
     * @param  string  $value
     * @return mixed
     */
    protected function unserialize($value)
    {
        if ($this->connection instanceof PostgresConnection && ! Str::contains($value, [':', ';'])) {
            $value = base64_decode($value);
        }

return unserialize($value);
    }
}