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<?php
namespace Illuminate\Database;
class DatabaseTransactionsManager
{
/**
* All of the recorded transactions.
*
* @var \Illuminate\Support\Collection
*/
protected $transactions;
/**
* The database transaction that should be ignored by callbacks.
*
* @var \Illuminate\Database\DatabaseTransactionRecord
*/
protected $callbacksShouldIgnore;
/**
* Create a new database transactions manager instance.
*
* @return void
*/
public function __construct()
{
$this->transactions = collect();
}
/**
* Start a new database transaction.
*
* @param string $connection
* @param int $level
* @return void
*/
public function begin($connection, $level)
{
$this->transactions->push(
new DatabaseTransactionRecord($connection, $level)
);
}
/**
* Rollback the active database transaction.
*
* @param string $connection
* @param int $level
* @return void
*/
public function rollback($connection, $level)
{
$this->transactions = $this->transactions->reject(
fn ($transaction) => $transaction->connection == $connection && $transaction->level > $level
)->values();
if ($this->transactions->isEmpty()) {
$this->callbacksShouldIgnore = null;
}
}
/**
* Commit the active database transaction.
*
* @param string $connection
* @return void
*/
public function commit($connection)
{
[$forThisConnection, $forOtherConnections] = $this->transactions->partition(
fn ($transaction) => $transaction->connection == $connection
);
$this->transactions = $forOtherConnections->values();
$forThisConnection->map->executeCallbacks();
if ($this->transactions->isEmpty()) {
$this->callbacksShouldIgnore = null;
}
}
/**
* Register a transaction callback.
*
* @param callable $callback
* @return void
*/
public function addCallback($callback)
{
if ($current = $this->callbackApplicableTransactions()->last()) {
return $current->addCallback($callback);
}
$callback();
}
/**
* Specify that callbacks should ignore the given transaction when determining if they should be executed.
*
* @param \Illuminate\Database\DatabaseTransactionRecord $transaction
* @return $this
*/
public function callbacksShouldIgnore(DatabaseTransactionRecord $transaction)
{
$this->callbacksShouldIgnore = $transaction;
return $this;
}
/**
* Get the transactions that are applicable to callbacks.
*
* @return \Illuminate\Support\Collection
*/
public function callbackApplicableTransactions()
{
return $this->transactions->reject(function ($transaction) {
return $transaction === $this->callbacksShouldIgnore;
})->values();
}
/**
* Get all the transactions.
*
* @return \Illuminate\Support\Collection
*/
public function getTransactions()
{
return $this->transactions;
}
}
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