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File Content: PluginInstaller.php

<?php

/*
 * This file is part of Composer.
 *
 * (c) Nils Adermann <naderman@naderman.de>
 *     Jordi Boggiano <j.boggiano@seld.be>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Composer\Installer;

use Composer\Composer;
use Composer\IO\IOInterface;
use Composer\Repository\InstalledRepositoryInterface;
use Composer\Package\PackageInterface;
use Composer\Util\Filesystem;
use Composer\Util\Platform;
use React\Promise\PromiseInterface;

/**
 * Installer for plugin packages
 *
 * @author Jordi Boggiano <j.boggiano@seld.be>
 * @author Nils Adermann <naderman@naderman.de>
 */
class PluginInstaller extends LibraryInstaller
{
    /**
     * Initializes Plugin installer.
     *
     * @param IOInterface $io
     * @param Composer    $composer
     */
    public function __construct(IOInterface $io, Composer $composer, Filesystem $fs = null, BinaryInstaller $binaryInstaller = null)
    {
        parent::__construct($io, $composer, 'composer-plugin', $fs, $binaryInstaller);
    }

/**
     * @inheritDoc
     */
    public function supports($packageType)
    {
        return $packageType === 'composer-plugin' || $packageType === 'composer-installer';
    }

/**
     * @inheritDoc
     */
    public function download(PackageInterface $package, PackageInterface $prevPackage = null)
    {
        $extra = $package->getExtra();
        if (empty($extra['class'])) {
            throw new \UnexpectedValueException('Error while installing '.$package->getPrettyName().', composer-plugin packages should have a class defined in their extra key to be usable.');
        }

return parent::download($package, $prevPackage);
    }

/**
     * @inheritDoc
     */
    public function install(InstalledRepositoryInterface $repo, PackageInterface $package)
    {
        $promise = parent::install($repo, $package);
        if (!$promise instanceof PromiseInterface) {
            $promise = \React\Promise\resolve();
        }

$pluginManager = $this->composer->getPluginManager();
        $self = $this;

return $promise->then(function () use ($self, $pluginManager, $package, $repo) {
            try {
                Platform::workaroundFilesystemIssues();
                $pluginManager->registerPackage($package, true);
            } catch (\Exception $e) {
                $self->rollbackInstall($e, $repo, $package);
            }
        });
    }

/**
     * @inheritDoc
     */
    public function update(InstalledRepositoryInterface $repo, PackageInterface $initial, PackageInterface $target)
    {
        $promise = parent::update($repo, $initial, $target);
        if (!$promise instanceof PromiseInterface) {
            $promise = \React\Promise\resolve();
        }

$pluginManager = $this->composer->getPluginManager();
        $self = $this;

return $promise->then(function () use ($self, $pluginManager, $initial, $target, $repo) {
            try {
                Platform::workaroundFilesystemIssues();
                $pluginManager->deactivatePackage($initial);
                $pluginManager->registerPackage($target, true);
            } catch (\Exception $e) {
                $self->rollbackInstall($e, $repo, $target);
            }
        });
    }

public function uninstall(InstalledRepositoryInterface $repo, PackageInterface $package)
    {
        $this->composer->getPluginManager()->uninstallPackage($package);

return parent::uninstall($repo, $package);
    }

/**
     * TODO v3 should make this private once we can drop PHP 5.3 support
     * @private
     *
     * @return void
     */
    public function rollbackInstall(\Exception $e, InstalledRepositoryInterface $repo, PackageInterface $package)
    {
        $this->io->writeError('Plugin initialization failed ('.$e->getMessage().'), uninstalling plugin');
        parent::uninstall($repo, $package);
        throw $e;
    }
}

Name	Size	Permission
BinaryInstaller.php	14681 bytes	0644
BinaryPresenceInterface.php	758 bytes	0644
InstallationManager.php	25258 bytes	0644
InstallerEvent.php	2040 bytes	0644
InstallerEvents.php	635 bytes	0644
InstallerInterface.php	4790 bytes	0644
LibraryInstaller.php	10617 bytes	0644
MetapackageInstaller.php	3220 bytes	0644
NoopInstaller.php	2833 bytes	0644
PackageEvent.php	2637 bytes	0644
PackageEvents.php	2020 bytes	0644
PluginInstaller.php	3998 bytes	0644
ProjectInstaller.php	3472 bytes	0644
SuggestedPackagesReporter.php	8473 bytes	0644

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