PHP code example of johmanx10 / transaction

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

johmanx10 / transaction example snippets

use Johmanx10\Transaction\Transaction;
use Johmanx10\Transaction\OperationInterface;
use Johmanx10\Transaction\Exception\TransactionRolledBackException;
use Johmanx10\Transaction\Exception\FailedRollbackException;
use Johmanx10\Transaction\Visitor\OperationVisitorInterface;

/** @var OperationInterface[] $operations */
$transaction = new Transaction(...$operations);

try {
    /** @var OperationVisitorInterface[] $visitors */
    $transaction->commit(...$visitors);
} catch (TransactionRolledBackException $rollback) {
    // Do something with the operations that were rolled back.
    // This exception contains a method to get all failed operations, paired
    // with any exception that triggered the rollback.
} catch (FailedRollbackException $rollbackException) {
    // Do something if an operation could not be rolled back.
    // This exception contains the affected operation, as well as a list of
    // operations that have successfully rolled back up to the point where the
    // current operation could not.
}

use Johmanx10\Transaction\Exception\OperationExceptionInterface;
use Johmanx10\Transaction\OperationHandler;
use Johmanx10\Transaction\OperationInterface;
use Johmanx10\Transaction\Visitor\LogOperationVisitor;
use Psr\Log\LoggerInterface;

$handler = new OperationHandler();
$handler->attachVisitor(
    /** @var LoggerInterface $logger */
    new LogOperationVisitor($logger)
);;

try {
    /** @var OperationInterface[] $operations */
    $handler->handle(...$operations);
} catch (OperationExceptionInterface $exception) {
    // Get the formatted internal exception.
    $formatted = $exception->getMessage();

    // Get the operation that caused the exception.
    $operation = $exception->getOperation();

    // Get the exception that shows the context of the failure.
    $context = $exception->getPrevious();
}

use Johmanx10\Transaction\Operation;
use Johmanx10\Transaction\Transaction;

$appDir = __DIR__ . '/my-app';

$transaction = new Transaction(
    // Create the app directory.
    new Operation(
        // Create the new directory.
        function () use ($appDir) {
            if (!file_exists($appDir) && !@mkdir($appDir)) {
                throw new RuntimeException(
                    sprintf('Could not create directory: "%s"', $appDir)
                );
            }
        },
        // Roll back the operation.
        function () use ($appDir) {
            if (file_exists($appDir) && !@rmdir($appDir)) {
                throw new RuntimeException(
                    sprintf('Could not remove directory: "%s"', $appDir)
                );
            }
        },
        // Set the operation description.
        sprintf('Create directory: "%s"', $appDir)
    )
);

use Johmanx10\Transaction\OperationInterface;
use Johmanx10\Transaction\Formatter\OperationFormatterInterface;

/**
 * @var OperationFormatterInterface $formatter
 * @var OperationInterface          $operation 
 */
$formatter->format($operation);

use Johmanx10\Transaction\Transaction;
use Johmanx10\Transaction\OperationInterface;
use Johmanx10\Transaction\Exception\TransactionRolledBackException;
use Johmanx10\Transaction\Formatter\RollbackFormatter;

/** @var OperationInterface[] $operations */
$transaction = new Transaction(...$operations);

try {
    $transaction->commit();
} catch (TransactionRolledBackException $rollback) {
    $formatter = new RollbackFormatter();
    echo $formatter->format($rollback) . PHP_EOL;
}

use Johmanx10\Transaction\Transaction;
use Johmanx10\Transaction\OperationInterface;
use Johmanx10\Transaction\Exception\FailedRollbackException;
use Johmanx10\Transaction\Formatter\FailedRollbackFormatter;

/** @var OperationInterface[] $operations */
$transaction = new Transaction(...$operations);

try {
    $transaction->commit();
} catch (FailedRollbackException $rollback) {
    $formatter = new FailedRollbackFormatter();
    echo $formatter->format($rollback) . PHP_EOL;
}

use Johmanx10\Transaction\OperationInterface;
use Johmanx10\Transaction\Transaction;
use Johmanx10\Transaction\Visitor\LogOperationVisitor;
use Psr\Log\LoggerInterface;

/** @var LoggerInterface $logger */
$visitor = new LogOperationVisitor($logger);

/** @var OperationInterface[] $operations */
$transaction = new Transaction(...$operations);

$transaction->commit($visitor);

examples/file-operations