mirror of
https://github.com/danog/file.git
synced 2024-11-26 20:04:51 +01:00
558 lines
16 KiB
PHP
558 lines
16 KiB
PHP
<?php
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namespace Amp\File;
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use Amp\Promise;
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use Amp\Success;
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use Amp\Failure;
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use Amp\Deferred;
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class EioDriver implements Driver {
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private $watcher;
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private $pending = 0;
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private $incrementor;
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private $callableDecrementor;
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private static $stream;
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/**
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* We have to keep a static reference of eio event streams
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* because if we don't garbage collection can unload eio's
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* underlying pipe via a system close() call before it's
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* finished and generate a SIGPIPE.
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*/
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public function __construct() {
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if (empty(self::$stream)) {
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\eio_init();
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self::$stream = \eio_get_event_stream();
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}
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$this->callableDecrementor = function() {
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\call_user_func($this->incrementor, -1);
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};
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$this->incrementor = function ($increment) {
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switch ($increment) {
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case 1:
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case -1:
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$this->pending += $increment;
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break;
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default:
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throw new FilesystemException(
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"Invalid pending event increment; 1 or -1 required"
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);
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}
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if ($this->pending === 0) {
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\Amp\disable($this->watcher);
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} elseif ($this->pending === 1) {
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\Amp\enable($this->watcher);
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}
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};
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$this->watcher = \Amp\onReadable(self::$stream, function() {
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while (\eio_npending()) {
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\eio_poll();
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}
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}, $options = ["enable" => false]);
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}
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/**
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* {@inheritdoc}
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*/
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public function open($path, $mode) {
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switch ($mode) {
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case "r": $flags = \EIO_O_RDONLY; break;
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case "r+": $flags = \EIO_O_RDWR; break;
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case "w": $flags = \EIO_O_WRONLY | \EIO_O_CREAT; break;
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case "w+": $flags = \EIO_O_RDWR | \EIO_O_CREAT; break;
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case "a": $flags = \EIO_O_WRONLY | \EIO_O_CREAT | \EIO_O_APPEND; break;
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case "a+": $flags = \EIO_O_RDWR | \EIO_O_CREAT | \EIO_O_APPEND; break;
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case "x": $flags = \EIO_O_WRONLY | \EIO_O_CREAT | \EIO_O_EXCL; break;
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case "x+": $flags = \EIO_O_RDWR | \EIO_O_CREAT | \EIO_O_EXCL; break;
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case "c": $flags = \EIO_O_WRONLY | \EIO_O_CREAT; break;
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case "c+": $flags = \EIO_O_RDWR | \EIO_O_CREAT; break;
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default: return new Failure(new FilesystemException(
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"Invalid open mode"
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));
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}
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$chmod = ($flags & \EIO_O_CREAT) ? 0644 : 0;
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\call_user_func($this->incrementor, 1);
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$promisor = new Deferred;
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$openArr = [$mode, $path, $promisor];
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\eio_open($path, $flags, $chmod, $priority = null, [$this, "onOpenHandle"], $openArr);
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return $promisor->promise();
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}
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private function onOpenHandle($openArr, $result, $req) {
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list($mode, $path, $promisor) = $openArr;
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if ($result === -1) {
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\call_user_func($this->incrementor, -1);
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$promisor->fail(new FilesystemException(
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\eio_get_last_error($req)
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));
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} elseif ($mode[0] === "a") {
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\array_unshift($openArr, $result);
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\eio_ftruncate($result, $offset = 0, $priority = null, [$this, "onOpenFtruncate"], $openArr);
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} else {
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\array_unshift($openArr, $result);
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\eio_fstat($result, $priority = null, [$this, "onOpenFstat"], $openArr);
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}
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}
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private function onOpenFtruncate($openArr, $result, $req) {
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\call_user_func($this->incrementor, -1);
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list($fh, $mode, $path, $promisor) = $openArr;
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if ($result === -1) {
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$promisor->fail(new FilesystemException(
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\eio_get_last_error($req)
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));
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} else {
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$handle = new EioHandle($this->incrementor, $fh, $path, $mode, $size = 0);
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$promisor->succeed($handle);
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}
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}
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private function onOpenFstat($openArr, $result, $req) {
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\call_user_func($this->incrementor, -1);
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list($fh, $mode, $path, $promisor) = $openArr;
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if ($result === -1) {
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$promisor->fail(new FilesystemException(
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\eio_get_last_error($req)
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));
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} else {
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StatCache::set($path, $result);
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$handle = new EioHandle($this->incrementor, $fh, $path, $mode, $result["size"]);
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$promisor->succeed($handle);
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}
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}
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/**
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* {@inheritdoc}
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*/
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public function stat($path) {
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if ($stat = StatCache::get($path)) {
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return new Success($stat);
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}
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\call_user_func($this->incrementor, 1);
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$promisor = new Deferred;
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$priority = \EIO_PRI_DEFAULT;
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$data = [$promisor, $path];
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\eio_stat($path, $priority, [$this, "onStat"], $data);
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return $promisor->promise();
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}
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private function onStat($data, $result, $req) {
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list($promisor, $path) = $data;
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\call_user_func($this->incrementor, -1);
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if ($result === -1) {
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$promisor->succeed(null);
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} else {
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StatCache::set($path, $result);
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$promisor->succeed($result);
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}
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}
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/**
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* {@inheritdoc}
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*/
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public function exists($path) {
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$promisor = new Deferred;
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$this->stat($path)->when(function ($error, $result) use ($promisor) {
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$promisor->succeed((bool) $result);
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});
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return $promisor->promise();
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}
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/**
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* {@inheritdoc}
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*/
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public function isdir($path) {
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$promisor = new Deferred;
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$this->stat($path)->when(function ($error, $result) use ($promisor) {
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if ($result) {
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$promisor->succeed(!($result["mode"] & \EIO_S_IFREG));
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} else {
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$promisor->succeed(false);
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}
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});
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return $promisor->promise();
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}
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/**
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* {@inheritdoc}
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*/
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public function isfile($path) {
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$promisor = new Deferred;
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$this->stat($path)->when(function ($error, $result) use ($promisor) {
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if ($result) {
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$promisor->succeed((bool) ($result["mode"] & \EIO_S_IFREG));
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} else {
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$promisor->succeed(false);
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}
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});
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return $promisor->promise();
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}
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/**
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* {@inheritdoc}
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*/
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public function size($path) {
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$promisor = new Deferred;
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$this->stat($path)->when(function ($error, $result) use ($promisor) {
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if (empty($result)) {
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$promisor->fail(new FilesystemException(
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"Specified path does not exist"
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));
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} elseif (($result["mode"] & \EIO_S_IFREG)) {
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$promisor->succeed($result["size"]);
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} else {
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$promisor->fail(new FilesystemException(
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"Specified path is not a regular file"
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));
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}
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});
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return $promisor->promise();
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}
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/**
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* {@inheritdoc}
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*/
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public function mtime($path) {
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$promisor = new Deferred;
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$this->stat($path)->when(function ($error, $result) use ($promisor) {
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if ($result) {
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$promisor->succeed($result["mtime"]);
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} else {
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$promisor->fail(new FilesystemException(
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"Specified path does not exist"
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));
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}
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});
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return $promisor->promise();
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}
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/**
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* {@inheritdoc}
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*/
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public function atime($path) {
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$promisor = new Deferred;
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$this->stat($path)->when(function ($error, $result) use ($promisor) {
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if ($result) {
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$promisor->succeed($result["atime"]);
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} else {
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$promisor->fail(new FilesystemException(
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"Specified path does not exist"
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));
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}
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});
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return $promisor->promise();
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}
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/**
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* {@inheritdoc}
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*/
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public function ctime($path) {
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$promisor = new Deferred;
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$this->stat($path)->when(function ($error, $result) use ($promisor) {
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if ($result) {
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$promisor->succeed($result["ctime"]);
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} else {
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$promisor->fail(new FilesystemException(
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"Specified path does not exist"
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));
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}
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});
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return $promisor->promise();
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}
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/**
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* {@inheritdoc}
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*/
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public function lstat($path) {
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\call_user_func($this->incrementor, 1);
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$promisor = new Deferred;
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$priority = \EIO_PRI_DEFAULT;
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\eio_lstat($path, $priority, [$this, "onLstat"], $promisor);
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return $promisor->promise();
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}
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private function onLstat($promisor, $result, $req) {
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\call_user_func($this->incrementor, -1);
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if ($result === -1) {
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$promisor->succeed(null);
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} else {
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$promisor->succeed($result);
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}
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}
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/**
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* {@inheritdoc}
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*/
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public function symlink($target, $link) {
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\call_user_func($this->incrementor, 1);
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$promisor = new Deferred;
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$priority = \EIO_PRI_DEFAULT;
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\eio_symlink($target, $link, $priority, [$this, "onGenericResult"], $promisor);
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return $promisor->promise();
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}
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private function onGenericResult($promisor, $result, $req) {
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\call_user_func($this->incrementor, -1);
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if ($result === -1) {
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$promisor->fail(new FilesystemException(
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\eio_get_last_error($req)
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));
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} else {
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$promisor->succeed(true);
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}
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}
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/**
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* {@inheritdoc}
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*/
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public function rename($from, $to) {
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\call_user_func($this->incrementor, 1);
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$promisor = new Deferred;
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$priority = \EIO_PRI_DEFAULT;
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\eio_rename($from, $to, $priority, [$this, "onGenericResult"], $promisor);
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return $promisor->promise();
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}
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/**
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* {@inheritdoc}
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*/
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public function unlink($path) {
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\call_user_func($this->incrementor, 1);
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$promisor = new Deferred;
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$priority = \EIO_PRI_DEFAULT;
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$data = [$promisor, $path];
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\eio_unlink($path, $priority, [$this, "onUnlink"], $data);
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return $promisor->promise();
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}
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private function onUnlink($data, $result, $req) {
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list($promisor, $path) = $data;
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\call_user_func($this->incrementor, -1);
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if ($result === -1) {
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$promisor->fail(new FilesystemException(
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\eio_get_last_error($req)
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));
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} else {
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StatCache::clear($path);
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$promisor->succeed(true);
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}
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}
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/**
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* {@inheritdoc}
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*/
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public function mkdir($path, $mode = 0644) {
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\call_user_func($this->incrementor, 1);
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$promisor = new Deferred;
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$priority = \EIO_PRI_DEFAULT;
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\eio_mkdir($path, $mode, $priority, [$this, "onGenericResult"], $promisor);
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return $promisor->promise();
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}
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/**
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* {@inheritdoc}
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*/
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public function rmdir($path) {
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\call_user_func($this->incrementor, 1);
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$promisor = new Deferred;
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$priority = \EIO_PRI_DEFAULT;
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$data = [$promisor, $path];
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\eio_rmdir($path, $priority, [$this, "onRmdir"], $data);
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return $promisor->promise();
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}
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private function onRmdir($data, $result, $req) {
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list($promisor, $path) = $data;
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\call_user_func($this->incrementor, -1);
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if ($result === -1) {
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$promisor->fail(new FilesystemException(
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\eio_get_last_error($req)
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));
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} else {
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StatCache::clear($path);
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$promisor->succeed(true);
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}
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}
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/**
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* {@inheritdoc}
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*/
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public function scandir($path) {
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\call_user_func($this->incrementor, 1);
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$promisor = new Deferred;
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$flags = \EIO_READDIR_STAT_ORDER | \EIO_READDIR_DIRS_FIRST;
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$priority = \EIO_PRI_DEFAULT;
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\eio_readdir($path, $flags, $priority, [$this, "onScandir"], $promisor);
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return $promisor->promise();
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}
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private function onScandir($promisor, $result, $req) {
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\call_user_func($this->incrementor, -1);
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if ($result === -1) {
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$promisor->fail(new FilesystemException(
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\eio_get_last_error($req)
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));
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} else {
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$promisor->succeed($result["names"]);
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}
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}
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/**
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* {@inheritdoc}
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*/
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public function chmod($path, $mode) {
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\call_user_func($this->incrementor, 1);
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$promisor = new Deferred;
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$priority = \EIO_PRI_DEFAULT;
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\eio_chmod($path, $mode, $priority, [$this, "onGenericResult"], $promisor);
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return $promisor->promise();
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}
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/**
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* {@inheritdoc}
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*/
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public function chown($path, $uid, $gid) {
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\call_user_func($this->incrementor, 1);
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$promisor = new Deferred;
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$priority = \EIO_PRI_DEFAULT;
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\eio_chown($path, $uid, $gid, $priority, [$this, "onGenericResult"], $promisor);
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return $promisor->promise();
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}
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/**
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* {@inheritdoc}
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*/
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public function touch($path) {
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$atime = $mtime = time();
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$promisor = new Deferred;
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$priority = \EIO_PRI_DEFAULT;
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\eio_utime($path, $atime, $mtime, $priority, [$this, "onGenericResult"], $promisor);
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return $promisor->promise();
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}
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/**
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* {@inheritdoc}
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*/
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public function get($path) {
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$flags = $flags = \EIO_O_RDONLY;
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$mode = 0;
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$priority = \EIO_PRI_DEFAULT;
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\call_user_func($this->incrementor, 1);
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$promisor = new Deferred;
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\eio_open($path, $flags, $mode, $priority, [$this, "onGetOpen"], $promisor);
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return $promisor->promise();
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}
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private function onGetOpen($promisor, $result, $req) {
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if ($result === -1) {
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$promisor->fail(new FilesystemException(
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\eio_get_last_error($req)
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));
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} else {
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$priority = \EIO_PRI_DEFAULT;
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\eio_fstat($result, $priority, [$this, "onGetFstat"], [$result, $promisor]);
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}
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}
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private function onGetFstat($fhAndPromisor, $result, $req) {
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list($fh, $promisor) = $fhAndPromisor;
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if ($result === -1) {
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$promisor->fail(new FilesystemException(
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\eio_get_last_error($req)
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));
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return;
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}
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$offset = 0;
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$length = $result["size"];
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$priority = \EIO_PRI_DEFAULT;
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\eio_read($fh, $length, $offset, $priority, [$this, "onGetRead"], $fhAndPromisor);
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}
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private function onGetRead($fhAndPromisor, $result, $req) {
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list($fh, $promisor) = $fhAndPromisor;
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$priority = \EIO_PRI_DEFAULT;
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\eio_close($fh, $priority, $this->callableDecrementor);
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if ($result === -1) {
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$promisor->fail(new FilesystemException(
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\eio_get_last_error($req)
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));
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} else {
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$promisor->succeed($result);
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}
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}
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/**
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* {@inheritdoc}
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*/
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public function put($path, $contents) {
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$flags = \EIO_O_RDWR | \EIO_O_CREAT;
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$mode = \EIO_S_IRUSR | \EIO_S_IWUSR | \EIO_S_IXUSR;
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$priority = \EIO_PRI_DEFAULT;
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\call_user_func($this->incrementor, 1);
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$promisor = new Deferred;
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$data = [$contents, $promisor];
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\eio_open($path, $flags, $mode, $priority, [$this, "onPutOpen"], $data);
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return $promisor->promise();
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}
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private function onPutOpen($data, $result, $req) {
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list($contents, $promisor) = $data;
|
|
if ($result === -1) {
|
|
$promisor->fail(new FilesystemException(
|
|
\eio_get_last_error($req)
|
|
));
|
|
} else {
|
|
$length = strlen($contents);
|
|
$offset = 0;
|
|
$priority = \EIO_PRI_DEFAULT;
|
|
$callback = [$this, "onPutWrite"];
|
|
$fhAndPromisor = [$result, $promisor];
|
|
\eio_write($result, $contents, $length, $offset, $priority, $callback, $fhAndPromisor);
|
|
}
|
|
}
|
|
|
|
private function onPutWrite($fhAndPromisor, $result, $req) {
|
|
list($fh, $promisor) = $fhAndPromisor;
|
|
\eio_close($fh);
|
|
$priority = \EIO_PRI_DEFAULT;
|
|
\eio_close($fh, $priority, $this->callableDecrementor);
|
|
if ($result === -1) {
|
|
$promisor->fail(new FilesystemException(
|
|
\eio_get_last_error($req)
|
|
));
|
|
} else {
|
|
$promisor->succeed($result);
|
|
}
|
|
}
|
|
|
|
public function __destruct() {
|
|
\Amp\cancel($this->watcher);
|
|
}
|
|
}
|