Add cache to the composer repositories
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<?php
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/*
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* This file is part of Composer.
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*
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* (c) Nils Adermann <naderman@naderman.de>
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* Jordi Boggiano <j.boggiano@seld.be>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Composer;
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use Composer\IO\IOInterface;
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/**
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* Reads/writes to a filesystem cache
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*
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* @author Jordi Boggiano <j.boggiano@seld.be>
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*/
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class Cache
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{
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private $io;
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private $root;
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private $enabled = true;
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public function __construct(IOInterface $io, $cacheKey = null)
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{
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$this->io = $io;
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if (defined('PHP_WINDOWS_VERSION_MAJOR')) {
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$this->root = getenv('APPDATA') . rtrim('/Composer/cache/' . $cacheKey, '/') . '/';
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} else {
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$this->root = getenv('HOME') . rtrim('/.composer/cache/' . $cacheKey, '/') . '/';
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}
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if (!is_dir($this->root)) {
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if (!@mkdir($this->root, 0777, true)) {
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$this->enabled = false;
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}
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}
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}
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public function getRoot()
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{
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return $this->root;
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}
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public function read($file)
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{
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if ($this->enabled && file_exists($this->root . $file)) {
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return file_get_contents($this->root . $file);
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}
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}
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public function write($file, $contents)
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{
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if ($this->enabled) {
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file_put_contents($this->root . $file, $contents);
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}
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}
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public function sha1($file)
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{
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if ($this->enabled && file_exists($this->root . $file)) {
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return sha1_file($this->root . $file);
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}
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}
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}
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@ -15,6 +15,7 @@ namespace Composer\Repository;
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use Composer\Package\Loader\ArrayLoader;
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use Composer\Package\LinkConstraint\VersionConstraint;
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use Composer\Json\JsonFile;
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use Composer\Cache;
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use Composer\IO\IOInterface;
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use Composer\Util\RemoteFilesystem;
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@ -26,6 +27,7 @@ class ComposerRepository extends ArrayRepository
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protected $url;
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protected $io;
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protected $packages;
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protected $cache;
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public function __construct(array $config, IOInterface $io)
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{
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@ -40,13 +42,25 @@ class ComposerRepository extends ArrayRepository
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$this->url = $config['url'];
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$this->io = $io;
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$this->cache = new Cache($io, preg_replace('{[^a-z0-9.]}', '-', $this->url));
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}
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protected function initialize()
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{
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parent::initialize();
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$json = new JsonFile($this->url.'/packages.json', new RemoteFilesystem($this->io));
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$data = $json->read();
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try {
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$json = new JsonFile($this->url.'/packages.json', new RemoteFilesystem($this->io));
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$data = $json->read();
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$this->cache->write('packages.json', json_encode($data));
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} catch (\Exception $e) {
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if ($contents = $this->cache->read('packages.json')) {
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$this->io->write('<warning>'.$this->url.' could not be loaded, package information was loaded from the local cache and may be out of date</warning>');
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$data = json_decode($contents, true);
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} else {
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throw $e;
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}
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}
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$loader = new ArrayLoader();
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$this->loadRepository($loader, $data);
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@ -75,8 +89,14 @@ class ComposerRepository extends ArrayRepository
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if (isset($data['includes'])) {
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foreach ($data['includes'] as $include => $metadata) {
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$json = new JsonFile($this->url.'/'.$include, new RemoteFilesystem($this->io));
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$this->loadRepository($loader, $json->read());
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if ($this->cache->sha1($include) === $metadata['sha1']) {
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$includedData = json_decode($this->cache->read($include), true);
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} else {
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$json = new JsonFile($this->url.'/'.$include, new RemoteFilesystem($this->io));
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$includedData = $json->read();
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$this->cache->write($include, json_encode($includedData));
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}
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$this->loadRepository($loader, $includedData);
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}
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}
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}
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