From 8487a3d94263ab3848c983c2656692ffdfb6c9ec Mon Sep 17 00:00:00 2001
From: Benjamin Adams <Armastevs@gmail.com>
Date: Mon, 15 Jul 2013 12:35:00 -0500
Subject: [PATCH] Plugin and index page
---
.htaccess | 12 +
README.md | 16 +
index-wp-redis.php | 77 +
wp-redis-cache/cache.php | 19 +
wp-redis-cache/index.php | 74 +
wp-redis-cache/options.php | 61 +
wp-redis-cache/predis5.2.php | 3484 ++++++++++++++++++++++++++++++++++
7 files changed, 3743 insertions(+)
create mode 100644 .htaccess
create mode 100644 README.md
create mode 100644 index-wp-redis.php
create mode 100644 wp-redis-cache/cache.php
create mode 100644 wp-redis-cache/index.php
create mode 100644 wp-redis-cache/options.php
create mode 100644 wp-redis-cache/predis5.2.php
diff --git a/.htaccess b/.htaccess
new file mode 100644
index 0000000..02db732
--- /dev/null
+++ b/.htaccess
@@ -0,0 +1,12 @@
+
+# BEGIN WordPress
+<IfModule mod_rewrite.c>
+RewriteEngine On
+RewriteBase /
+RewriteRule ^index\.php$ - [L]
+RewriteCond %{REQUEST_FILENAME} !-f
+RewriteCond %{REQUEST_FILENAME} !-d
+RewriteRule . /index.php [L]
+</IfModule>
+
+# END WordPress
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..16f77f6
--- /dev/null
+++ b/README.md
@@ -0,0 +1,16 @@
+
+
+
+```
+# BEGIN WordPress
+<IfModule mod_rewrite.c>
+RewriteEngine On
+RewriteBase /
+RewriteRule ^index-wp-redis\.php$ - [L]
+RewriteCond %{REQUEST_FILENAME} !-f
+RewriteCond %{REQUEST_FILENAME} !-d
+RewriteRule . /index-wp-redis\.php [L]
+</IfModule>
+
+# END WordPress
+```
\ No newline at end of file
diff --git a/index-wp-redis.php b/index-wp-redis.php
new file mode 100644
index 0000000..25d63ab
--- /dev/null
+++ b/index-wp-redis.php
@@ -0,0 +1,77 @@
+<?php
+
+$seconds_cache_redis = 60*60*12; // 12 hours by default
+$ip_of_your_website = '64.90.38.145'; //You must set this to the IP of your website
+$secret_string = "changeme"; /*This must be the same as in the wp-admin section if you want to manually refresh the cache
+ ex: http://example.com/sample-post?refresh=changeme */
+
+
+// so we don't confuse the cloudflare server
+if (isset($_SERVER['HTTP_CF_CONNECTING_IP'])) {
+ $_SERVER['REMOTE_ADDR'] = $_SERVER['HTTP_CF_CONNECTING_IP'];
+}
+
+define('WP_USE_THEMES', true);
+
+// Start the timer so we can track the page load time
+$start = microtime();
+
+include("wp-content/plugins/wp-redis-cache/predis5.2.php"); //we need this to use Redis inside of PHP
+$redis = new Predis_Client();
+
+$current_url = "http://".$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];
+$current_url = str_replace("?refresh=$secret_string", '', $current_url); //clean up the URL
+$current_url = str_replace("&refresh=$secret_string", '', $current_url);
+$redis_key = md5($current_url);
+
+
+//Either manual refresh cache by adding ?refresh=secret_string after the URL or somebody posting a comment
+if (isset($_GET['refresh']) || $_GET['refresh']==$secret_string || ($_SERVER['HTTP_REFERER'] == $current_url && $_SERVER['REQUEST_URI'] != '/' && $_SERVER['REMOTE_ADDR'] != $ip_of_your_website)) {
+
+ $redis->del($redis_key);
+ require('./wp-blog-header.php');
+
+// This page is cached, lets display it
+} else if ($redis->exists($redis_key)) {
+ $html_of_page = $redis->get($redis_key);
+ echo $html_of_page;
+
+// If the cache does not exist lets display the user the normal page without cache, and then fetch a new cache page
+} else if ($_SERVER['REMOTE_ADDR'] != $ip_of_your_website && strstr($current_url, 'preview=true') == false) {
+ require('./wp-blog-header.php');
+ $html_of_page = @file_get_contents($current_url);
+
+ $usr_seconds=get_option('wp-redis-cache-seconds'); //if the user has the seconds defined in the admin section use it
+ if(isset($usr_seconds) && is_numeric($usr_seconds))
+ {
+ $seconds_cache_redis=$usr_seconds;
+ }
+
+ if(strlen($html_of_page) > 5000)
+ {
+ $redis->setex($redis_key, $seconds_cache_redis, $html_of_page);
+ }
+
+// This is what your server should get if no cache exists
+} else {
+ require('./wp-blog-header.php');
+}
+
+
+
+if ($_SERVER['REMOTE_ADDR'] != $ip_of_your_website) {
+// How long did it take to load the page? (CloudFlare may strip out comments)
+$end = microtime();
+$time = (@getMicroTime($end) - @getMicroTime($start));
+ echo "<!-- Cache system by Benjamin Adams. Page generated in ".round($time,5)." seconds. -->";
+}
+
+
+function getMicroTime($t) {
+ list($usec, $sec) = explode(" ",$t);
+ return ((float)$usec + (float)$sec);
+}
+
+
+
+?>
\ No newline at end of file
diff --git a/wp-redis-cache/cache.php b/wp-redis-cache/cache.php
new file mode 100644
index 0000000..54ad340
--- /dev/null
+++ b/wp-redis-cache/cache.php
@@ -0,0 +1,19 @@
+<?php
+
+add_action('transition_post_status', 'refresh_wp_redis_cache',10,3);
+
+//clears the cache after you update a post
+function refresh_wp_redis_cache( $new, $old, $post )
+{
+
+if($new == "publish")
+{
+$permalink = get_permalink( $post->ID );
+
+include("predis5.2.php"); //we need this to use Redis inside of PHP
+$redis = new Predis_Client();
+
+$redis_key = md5($permalink);
+$redis->del($redis_key);
+}
+}
\ No newline at end of file
diff --git a/wp-redis-cache/index.php b/wp-redis-cache/index.php
new file mode 100644
index 0000000..3dcb4e6
--- /dev/null
+++ b/wp-redis-cache/index.php
@@ -0,0 +1,74 @@
+<?php
+class wctest{
+ public function __construct(){
+ if(is_admin()){
+ add_action('admin_menu', array($this, 'add_plugin_page'));
+ add_action('admin_init', array($this, 'page_init'));
+ }
+ }
+
+ public function add_plugin_page(){
+ // This page will be under "Settings"
+ add_options_page('Settings Admin', 'Settings', 'manage_options', 'test-setting-admin', array($this, 'create_admin_page'));
+ }
+
+ public function create_admin_page(){
+ ?>
+ <div class="wrap">
+ <?php screen_icon(); ?>
+ <h2>Settings</h2>
+ <form method="post" action="options.php">
+ <?php
+ // This prints out all hidden setting fields
+ settings_fields('test_option_group');
+ do_settings_sections('test-setting-admin');
+ ?>
+ <?php submit_button(); ?>
+ </form>
+ </div>
+ <?php
+ }
+
+ public function page_init(){
+ register_setting('test_option_group', 'array_key', array($this, 'check_ID'));
+
+ add_settings_section(
+ 'setting_section_id',
+ 'Setting',
+ array($this, 'print_section_info'),
+ 'test-setting-admin'
+ );
+
+ add_settings_field(
+ 'some_id',
+ 'Some ID(Title)',
+ array($this, 'create_an_id_field'),
+ 'test-setting-admin',
+ 'setting_section_id'
+ );
+ }
+
+ public function check_ID($input){
+ if(is_numeric($input['some_id'])){
+ $mid = $input['some_id'];
+ if(get_option('test_some_id') === FALSE){
+ add_option('test_some_id', $mid);
+ }else{
+ update_option('test_some_id', $mid);
+ }
+ }else{
+ $mid = '';
+ }
+ return $mid;
+ }
+
+ public function print_section_info(){
+ print 'Enter your setting below:';
+ }
+
+ public function create_an_id_field(){
+ ?><input type="text" id="input_whatever_unique_id_I_want" name="array_key[some_id]" value="<?=get_option('test_some_id');?>" /><?php
+ }
+}
+
+$wctest = new wctest();
\ No newline at end of file
diff --git a/wp-redis-cache/options.php b/wp-redis-cache/options.php
new file mode 100644
index 0000000..2bf57f4
--- /dev/null
+++ b/wp-redis-cache/options.php
@@ -0,0 +1,61 @@
+<?php
+/*
+Plugin Name: Wp Redis Cache
+Plugin URI: https://github.com/BenjaminAdams/wp-redis-cache
+Description: Cache Wordpress with redis
+Version: 1.0
+Author: Benjamin Adams
+Author URI: http://dudelol.com
+/* Copyright 2013 Benjamin Adams (email : ben@dudelol.com)
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License, version 2, as
+ published by the Free Software Foundation.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+*/
+
+
+//Custom Theme Settings
+add_action('admin_menu', 'add_redis_interface');
+
+function add_redis_interface() {
+ add_options_page('Wp Redis', 'Wp Redis', '8', 'functions', 'edit_redis_options');
+}
+
+function edit_redis_options() {
+ ?>
+ <div class='wrap'>
+ <h2>Wp-Redis Options</h2>
+ <form method="post" action="options.php">
+ <?php wp_nonce_field('update-options') ?>
+
+ <p><strong>Seconds of Caching:</strong><br />
+ How many seconds would you like to cache? *Recommended 12 hours or 43200 seconds <br />
+ <input type="text" name="wp-redis-cache-seconds" size="45" value="<?php echo get_option('wp-redis-cache-seconds'); ?>" /></p>
+
+ <p><strong>Secret String:</strong><br />
+ To refresh the cache of your post manually you will need to set a secret string so do can refresh manually like so:
+ <br /> http://example.com/post_name?refresh=secret_string. <br />
+ <br />Important! You must change this in the index-wp-redis.php file<br />
+ <input type="text" name="wp-redis-secret" size="45" value="<?php echo get_option('wp-redis-secret'); ?>" /></p>
+
+
+ <p><input type="submit" name="Submit" value="Update Options" /></p>
+
+ <input type="hidden" name="action" value="update" />
+ <input type="hidden" name="page_options" value="wp-redis-cache-seconds,wp-redis-secret" />
+
+ </form>
+ </div>
+ <?php
+}
+
+include('cache.php');
\ No newline at end of file
diff --git a/wp-redis-cache/predis5.2.php b/wp-redis-cache/predis5.2.php
new file mode 100644
index 0000000..8944d82
--- /dev/null
+++ b/wp-redis-cache/predis5.2.php
@@ -0,0 +1,3484 @@
+<?php
+class PredisException extends Exception { }
+
+// Client-side errors
+class Predis_ClientException extends PredisException { }
+
+// Aborted multi/exec
+class Predis_AbortedMultiExec extends PredisException { }
+
+// Server-side errors
+class Predis_ServerException extends PredisException {
+ public function toResponseError() {
+ return new Predis_ResponseError($this->getMessage());
+ }
+}
+
+// Communication errors
+class Predis_CommunicationException extends PredisException {
+ private $_connection;
+
+ public function __construct(Predis_Connection $connection, $message = null, $code = null) {
+ $this->_connection = $connection;
+ parent::__construct($message, $code);
+ }
+
+ public function getConnection() { return $this->_connection; }
+ public function shouldResetConnection() { return true; }
+}
+
+// Unexpected responses
+class Predis_MalformedServerResponse extends Predis_CommunicationException { }
+
+/* ------------------------------------------------------------------------- */
+
+class Predis_Client {
+ const VERSION = '0.6.6';
+ private $_options, $_connection, $_serverProfile, $_responseReader;
+
+ public function __construct($parameters = null, $clientOptions = null) {
+ $this->setupClient($clientOptions !== null ? $clientOptions : new Predis_ClientOptions());
+ $this->setupConnection($parameters);
+ }
+
+ public static function create(/* arguments */) {
+ $argv = func_get_args();
+ $argc = func_num_args();
+
+ $options = null;
+ $lastArg = $argv[$argc-1];
+ if ($argc > 0 && !is_string($lastArg) && ($lastArg instanceof Predis_ClientOptions ||
+ is_subclass_of($lastArg, 'Predis_RedisServerProfile'))) {
+ $options = array_pop($argv);
+ $argc--;
+ }
+
+ if ($argc === 0) {
+ throw new Predis_ClientException('Missing connection parameters');
+ }
+
+ return new Predis_Client($argc === 1 ? $argv[0] : $argv, $options);
+ }
+
+ private static function filterClientOptions($options) {
+ if ($options instanceof Predis_ClientOptions) {
+ return $options;
+ }
+ if (is_array($options)) {
+ return new Predis_ClientOptions($options);
+ }
+ if ($options instanceof Predis_RedisServerProfile) {
+ return new Predis_ClientOptions(array(
+ 'profile' => $options
+ ));
+ }
+ if (is_string($options)) {
+ return new Predis_ClientOptions(array(
+ 'profile' => Predis_RedisServerProfile::get($options)
+ ));
+ }
+ throw new InvalidArgumentException("Invalid type for client options");
+ }
+
+ private function setupClient($options) {
+ $options = self::filterClientOptions($options);
+
+ $this->setProfile($options->profile);
+
+ $reader = $options->reader;
+ $reader->setOption('iterable_multibulk', $options->iterable_multibulk);
+ $reader->setOption('throw_on_error', $options->throw_on_error);
+
+ $this->_options = $options;
+ $this->_responseReader = $reader;
+ }
+
+ private function setupConnection($parameters) {
+ if ($parameters !== null && !(is_array($parameters) || is_string($parameters))) {
+ throw new Predis_ClientException('Invalid parameters type (array or string expected)');
+ }
+ if (is_array($parameters) && isset($parameters[0])) {
+ $cluster = new Predis_ConnectionCluster($this->_options->key_distribution);
+ foreach ($parameters as $shardParams) {
+ $cluster->add($this->createConnection($shardParams));
+ }
+ $this->setConnection($cluster);
+ }
+ else {
+ $this->setConnection($this->createConnection($parameters));
+ }
+ }
+
+ private function createConnection($parameters) {
+ if (!$parameters instanceof Predis_ConnectionParameters) {
+ $parameters = new Predis_ConnectionParameters($parameters);
+ }
+
+ $connection = new Predis_Connection($parameters, $this->_responseReader);
+ if ($parameters->password !== null) {
+ $connection->pushInitCommand($this->createCommand(
+ 'auth', array($parameters->password)
+ ));
+ }
+ if ($parameters->database !== null) {
+ $connection->pushInitCommand($this->createCommand(
+ 'select', array($parameters->database)
+ ));
+ }
+
+ return $connection;
+ }
+
+ private function setConnection(Predis_IConnection $connection) {
+ $this->_connection = $connection;
+ }
+
+ public function setProfile($serverProfile) {
+ if ($serverProfile instanceof Predis_RedisServerProfile) {
+ $this->_serverProfile = $serverProfile;
+ }
+ else if (is_string($serverProfile)) {
+ $this->_serverProfile = Predis_RedisServerProfile::get($serverProfile);
+ }
+ else {
+ throw new InvalidArgumentException(
+ "Invalid type for server profile, Predis_RedisServerProfile or string expected"
+ );
+ }
+ }
+
+ public function getProfile() {
+ return $this->_serverProfile;
+ }
+
+ public function getResponseReader() {
+ return $this->_responseReader;
+ }
+
+ public function getClientFor($connectionAlias) {
+ if (!Predis_Shared_Utils::isCluster($this->_connection)) {
+ throw new Predis_ClientException(
+ 'This method is supported only when the client is connected to a cluster of connections'
+ );
+ }
+
+ $connection = $this->_connection->getConnectionById($connectionAlias);
+ if ($connection === null) {
+ throw new InvalidArgumentException(
+ "Invalid connection alias: '$connectionAlias'"
+ );
+ }
+
+ $newClient = new Predis_Client();
+ $newClient->setupClient($this->_options);
+ $newClient->setConnection($connection);
+ return $newClient;
+ }
+
+ public function connect() {
+ $this->_connection->connect();
+ }
+
+ public function disconnect() {
+ $this->_connection->disconnect();
+ }
+
+ public function isConnected() {
+ return $this->_connection->isConnected();
+ }
+
+ public function getConnection($id = null) {
+ if (!isset($id)) {
+ return $this->_connection;
+ }
+ else {
+ return Predis_Shared_Utils::isCluster($this->_connection)
+ ? $this->_connection->getConnectionById($id)
+ : $this->_connection;
+ }
+ }
+
+ public function __call($method, $arguments) {
+ $command = $this->_serverProfile->createCommand($method, $arguments);
+ return $this->_connection->executeCommand($command);
+ }
+
+ public function createCommand($method, $arguments = array()) {
+ return $this->_serverProfile->createCommand($method, $arguments);
+ }
+
+ public function executeCommand(Predis_Command $command) {
+ return $this->_connection->executeCommand($command);
+ }
+
+ public function executeCommandOnShards(Predis_Command $command) {
+ $replies = array();
+ if (Predis_Shared_Utils::isCluster($this->_connection)) {
+ foreach($this->_connection as $connection) {
+ $replies[] = $connection->executeCommand($command);
+ }
+ }
+ else {
+ $replies[] = $this->_connection->executeCommand($command);
+ }
+ return $replies;
+ }
+
+ public function rawCommand($rawCommandData, $closesConnection = false) {
+ if (Predis_Shared_Utils::isCluster($this->_connection)) {
+ throw new Predis_ClientException('Cannot send raw commands when connected to a cluster of Redis servers');
+ }
+ return $this->_connection->rawCommand($rawCommandData, $closesConnection);
+ }
+
+ private function sharedInitializer($argv, $initializer) {
+ $argc = count($argv);
+ if ($argc === 0) {
+ return $this->$initializer();
+ }
+ else if ($argc === 1) {
+ list($arg0) = $argv;
+ return is_array($arg0) ? $this->$initializer($arg0) : $this->$initializer(null, $arg0);
+ }
+ else if ($argc === 2) {
+ list($arg0, $arg1) = $argv;
+ return $this->$initializer($arg0, $arg1);
+ }
+ return $this->$initializer($this, $arguments);
+ }
+
+ public function pipeline(/* arguments */) {
+ $args = func_get_args();
+ return $this->sharedInitializer($args, 'initPipeline');
+ }
+
+ public function pipelineSafe($pipelineBlock = null) {
+ return $this->initPipeline(array('safe' => true), $pipelineBlock);
+ }
+
+ private function initPipeline(Array $options = null, $pipelineBlock = null) {
+ $pipeline = null;
+ if (isset($options)) {
+ if (isset($options['safe']) && $options['safe'] == true) {
+ $connection = $this->getConnection();
+ $pipeline = new Predis_CommandPipeline($this, $connection instanceof Predis_Connection
+ ? new Predis_Pipeline_SafeExecutor($connection)
+ : new Predis_Pipeline_SafeClusterExecutor($connection)
+ );
+ }
+ else {
+ $pipeline = new Predis_CommandPipeline($this);
+ }
+ }
+ else {
+ $pipeline = new Predis_CommandPipeline($this);
+ }
+ return $this->pipelineExecute($pipeline, $pipelineBlock);
+ }
+
+ private function pipelineExecute(Predis_CommandPipeline $pipeline, $block) {
+ return $block !== null ? $pipeline->execute($block) : $pipeline;
+ }
+
+ public function multiExec(/* arguments */) {
+ $args = func_get_args();
+ return $this->sharedInitializer($args, 'initMultiExec');
+ }
+
+ private function initMultiExec(Array $options = null, $transBlock = null) {
+ $multi = isset($options) ? new Predis_MultiExecBlock($this, $options) : new Predis_MultiExecBlock($this);
+ return $transBlock !== null ? $multi->execute($transBlock) : $multi;
+ }
+
+ public function pubSubContext(Array $options = null) {
+ return new Predis_PubSubContext($this, $options);
+ }
+}
+
+/* ------------------------------------------------------------------------- */
+
+interface Predis_IClientOptionsHandler {
+ public function validate($option, $value);
+ public function getDefault();
+}
+
+class Predis_ClientOptionsProfile implements Predis_IClientOptionsHandler {
+ public function validate($option, $value) {
+ if ($value instanceof Predis_RedisServerProfile) {
+ return $value;
+ }
+ if (is_string($value)) {
+ return Predis_RedisServerProfile::get($value);
+ }
+ throw new InvalidArgumentException("Invalid value for option $option");
+ }
+
+ public function getDefault() {
+ return Predis_RedisServerProfile::getDefault();
+ }
+}
+
+class Predis_ClientOptionsKeyDistribution implements Predis_IClientOptionsHandler {
+ public function validate($option, $value) {
+ if ($value instanceof Predis_Distribution_IDistributionStrategy) {
+ return $value;
+ }
+ if (is_string($value)) {
+ $valueReflection = new ReflectionClass($value);
+ if ($valueReflection->isSubclassOf('Predis_Distribution_IDistributionStrategy')) {
+ return new $value;
+ }
+ }
+ throw new InvalidArgumentException("Invalid value for option $option");
+ }
+
+ public function getDefault() {
+ return new Predis_Distribution_HashRing();
+ }
+}
+
+class Predis_ClientOptionsIterableMultiBulk implements Predis_IClientOptionsHandler {
+ public function validate($option, $value) {
+ return (bool) $value;
+ }
+
+ public function getDefault() {
+ return false;
+ }
+}
+
+class Predis_ClientOptionsThrowOnError implements Predis_IClientOptionsHandler {
+ public function validate($option, $value) {
+ return (bool) $value;
+ }
+
+ public function getDefault() {
+ return true;
+ }
+}
+
+class Predis_ClientOptionsReader implements Predis_IClientOptionsHandler {
+ public function validate($option, $value) {
+ if ($value instanceof Predis_IResponseReader) {
+ return $value;
+ }
+ if (is_string($value)) {
+ if ($value === 'composable') {
+ return new Predis_ResponseReader();
+ }
+ $valueReflection = new ReflectionClass($value);
+ if ($valueReflection->isSubclassOf('Predis_IResponseReader')) {
+ return new $value;
+ }
+ }
+ throw new InvalidArgumentException("Invalid value for option $option");
+ }
+
+ public function getDefault() {
+ return new Predis_FastResponseReader();
+ }
+}
+
+class Predis_ClientOptions {
+ private static $_optionsHandlers;
+ private $_options;
+
+ public function __construct($options = null) {
+ self::initializeOptionsHandlers();
+ $this->initializeOptions($options !== null ? $options : array());
+ }
+
+ private static function initializeOptionsHandlers() {
+ if (!isset(self::$_optionsHandlers)) {
+ self::$_optionsHandlers = self::getOptionsHandlers();
+ }
+ }
+
+ private static function getOptionsHandlers() {
+ return array(
+ 'profile' => new Predis_ClientOptionsProfile(),
+ 'key_distribution' => new Predis_ClientOptionsKeyDistribution(),
+ 'iterable_multibulk' => new Predis_ClientOptionsIterableMultiBulk(),
+ 'throw_on_error' => new Predis_ClientOptionsThrowOnError(),
+ 'reader' => new Predis_ClientOptionsReader(),
+ );
+ }
+
+ private function initializeOptions($options) {
+ foreach ($options as $option => $value) {
+ if (isset(self::$_optionsHandlers[$option])) {
+ $handler = self::$_optionsHandlers[$option];
+ $this->_options[$option] = $handler->validate($option, $value);
+ }
+ }
+ }
+
+ public function __get($option) {
+ if (!isset($this->_options[$option])) {
+ $defaultValue = self::$_optionsHandlers[$option]->getDefault();
+ $this->_options[$option] = $defaultValue;
+ }
+ return $this->_options[$option];
+ }
+
+ public function __isset($option) {
+ return isset(self::$_optionsHandlers[$option]);
+ }
+}
+
+/* ------------------------------------------------------------------------- */
+
+class Predis_Protocol {
+ const NEWLINE = "\r\n";
+ const OK = 'OK';
+ const ERROR = 'ERR';
+ const QUEUED = 'QUEUED';
+ const NULL = 'nil';
+
+ const PREFIX_STATUS = '+';
+ const PREFIX_ERROR = '-';
+ const PREFIX_INTEGER = ':';
+ const PREFIX_BULK = '$';
+ const PREFIX_MULTI_BULK = '*';
+}
+
+abstract class Predis_Command {
+ private $_hash;
+ private $_arguments = array();
+
+ public abstract function getCommandId();
+
+ public abstract function serializeRequest($command, $arguments);
+
+ public function canBeHashed() {
+ return true;
+ }
+
+ public function getHash(Predis_Distribution_IDistributionStrategy $distributor) {
+ if (isset($this->_hash)) {
+ return $this->_hash;
+ }
+
+ if (isset($this->_arguments[0])) {
+ // TODO: should we throw an exception if the command does
+ // not support sharding?
+ $key = $this->_arguments[0];
+
+ $start = strpos($key, '{');
+ if ($start !== false) {
+ $end = strpos($key, '}', $start);
+ if ($end !== false) {
+ $key = substr($key, ++$start, $end - $start);
+ }
+ }
+
+ $this->_hash = $distributor->generateKey($key);
+ return $this->_hash;
+ }
+
+ return null;
+ }
+
+ public function closesConnection() {
+ return false;
+ }
+
+ protected function filterArguments(Array $arguments) {
+ return $arguments;
+ }
+
+ public function setArguments(/* arguments */) {
+ $this->_arguments = $this->filterArguments(func_get_args());
+ unset($this->_hash);
+ }
+
+ public function setArgumentsArray(Array $arguments) {
+ $this->_arguments = $this->filterArguments($arguments);
+ unset($this->_hash);
+ }
+
+ public function getArguments() {
+ return $this->_arguments;
+ }
+
+ public function getArgument($index = 0) {
+ if (isset($this->_arguments[$index]) === true) {
+ return $this->_arguments[$index];
+ }
+ }
+
+ public function parseResponse($data) {
+ return $data;
+ }
+
+ public final function invoke() {
+ return $this->serializeRequest($this->getCommandId(), $this->getArguments());
+ }
+}
+
+abstract class Predis_InlineCommand extends Predis_Command {
+ public function serializeRequest($command, $arguments) {
+ if (isset($arguments[0]) && is_array($arguments[0])) {
+ $arguments[0] = implode($arguments[0], ' ');
+ }
+ return $command . (count($arguments) > 0
+ ? ' ' . implode($arguments, ' ') . "\r\n" : "\r\n"
+ );
+ }
+}
+
+abstract class Predis_BulkCommand extends Predis_Command {
+ public function serializeRequest($command, $arguments) {
+ $data = array_pop($arguments);
+ if (is_array($data)) {
+ $data = implode($data, ' ');
+ }
+ return $command . ' ' . implode($arguments, ' ') . ' ' . strlen($data) .
+ "\r\n" . $data . "\r\n";
+ }
+}
+
+abstract class Predis_MultiBulkCommand extends Predis_Command {
+ public function serializeRequest($command, $arguments) {
+ $cmd_args = null;
+ $argsc = count($arguments);
+
+ if ($argsc === 1 && is_array($arguments[0])) {
+ $cmd_args = $arguments[0];
+ $argsc = count($cmd_args);
+ }
+ else {
+ $cmd_args = $arguments;
+ }
+
+ $cmdlen = strlen($command);
+ $reqlen = $argsc + 1;
+
+ $buffer = "*{$reqlen}\r\n\${$cmdlen}\r\n{$command}\r\n";
+ for ($i = 0; $i < $reqlen - 1; $i++) {
+ $argument = $cmd_args[$i];
+ $arglen = strlen($argument);
+ $buffer .= "\${$arglen}\r\n{$argument}\r\n";
+ }
+
+ return $buffer;
+ }
+}
+
+/* ------------------------------------------------------------------------- */
+
+interface Predis_IResponseHandler {
+ function handle(Predis_Connection $connection, $payload);
+}
+
+class Predis_ResponseStatusHandler implements Predis_IResponseHandler {
+ public function handle(Predis_Connection $connection, $status) {
+ if ($status === "OK") {
+ return true;
+ }
+ if ($status === "QUEUED") {
+ return new Predis_ResponseQueued();
+ }
+ return $status;
+ }
+}
+
+class Predis_ResponseErrorHandler implements Predis_IResponseHandler {
+ public function handle(Predis_Connection $connection, $errorMessage) {
+ throw new Predis_ServerException(substr($errorMessage, 4));
+ }
+}
+
+class Predis_ResponseErrorSilentHandler implements Predis_IResponseHandler {
+ public function handle(Predis_Connection $connection, $errorMessage) {
+ return new Predis_ResponseError(substr($errorMessage, 4));
+ }
+}
+
+class Predis_ResponseBulkHandler implements Predis_IResponseHandler {
+ public function handle(Predis_Connection $connection, $lengthString) {
+ $length = (int) $lengthString;
+ if ($length != $lengthString) {
+ Predis_Shared_Utils::onCommunicationException(new Predis_MalformedServerResponse(
+ $connection, "Cannot parse '$length' as data length"
+ ));
+ }
+ if ($length >= 0) {
+ return substr($connection->readBytes($length + 2), 0, -2);
+ }
+ if ($length == -1) {
+ return null;
+ }
+ }
+}
+
+class Predis_ResponseMultiBulkHandler implements Predis_IResponseHandler {
+ public function handle(Predis_Connection $connection, $lengthString) {
+ $listLength = (int) $lengthString;
+ if ($listLength != $lengthString) {
+ Predis_Shared_Utils::onCommunicationException(new Predis_MalformedServerResponse(
+ $connection, "Cannot parse '$lengthString' as data length"
+ ));
+ }
+
+ if ($listLength === -1) {
+ return null;
+ }
+
+ $list = array();
+
+ if ($listLength > 0) {
+ $handlers = array();
+ $reader = $connection->getResponseReader();
+ for ($i = 0; $i < $listLength; $i++) {
+ $header = $connection->readLine();
+ $prefix = $header[0];
+ if (isset($handlers[$prefix])) {
+ $handler = $handlers[$prefix];
+ }
+ else {
+ $handler = $reader->getHandler($prefix);
+ $handlers[$prefix] = $handler;
+ }
+ $list[$i] = $handler->handle($connection, substr($header, 1));
+ }
+ }
+
+ return $list;
+ }
+}
+
+class Predis_ResponseMultiBulkStreamHandler implements Predis_IResponseHandler {
+ public function handle(Predis_Connection $connection, $lengthString) {
+ $listLength = (int) $lengthString;
+ if ($listLength != $lengthString) {
+ Predis_Shared_Utils::onCommunicationException(new Predis_MalformedServerResponse(
+ $connection, "Cannot parse '$lengthString' as data length"
+ ));
+ }
+ return new Predis_Shared_MultiBulkResponseIterator($connection, $lengthString);
+ }
+}
+
+class Predis_ResponseIntegerHandler implements Predis_IResponseHandler {
+ public function handle(Predis_Connection $connection, $number) {
+ if (is_numeric($number)) {
+ return (int) $number;
+ }
+ else {
+ if ($number !== 'nil') {
+ Predis_Shared_Utils::onCommunicationException(new Predis_MalformedServerResponse(
+ $connection, "Cannot parse '$number' as numeric response"
+ ));
+ }
+ return null;
+ }
+ }
+}
+
+interface Predis_IResponseReader {
+ public function read(Predis_Connection $connection);
+ public function setOption($option, $value);
+ public function getOption($option);
+}
+
+class Predis_FastResponseReader implements Predis_IResponseReader {
+ private $_iterableMultibulk, $_throwErrors;
+
+ public function __construct() {
+ $this->_iterableMultibulk = false;
+ $this->_throwErrors = true;
+ }
+
+ public function read(Predis_Connection $connection) {
+ $chunk = $connection->readLine();
+ $prefix = $chunk[0];
+ $payload = substr($chunk, 1);
+ switch ($prefix) {
+ case '+': // inline
+ switch ($payload) {
+ case 'OK':
+ return true;
+ case 'QUEUED':
+ return new Predis_ResponseQueued();
+ default:
+ return $payload;
+ }
+
+ case '$': // bulk
+ $size = (int) $payload;
+ if ($size === -1) {
+ return null;
+ }
+ return substr($connection->readBytes($size + 2), 0, -2);
+
+ case '*': // multi bulk
+ $count = (int) $payload;
+ if ($count === -1) {
+ return null;
+ }
+ if ($this->_iterableMultibulk) {
+ return new Predis_Shared_MultiBulkResponseIterator($connection, $count);
+ }
+ $multibulk = array();
+ for ($i = 0; $i < $count; $i++) {
+ $multibulk[$i] = $this->read($connection);
+ }
+ return $multibulk;
+
+ case ':': // integer
+ return (int) $payload;
+
+ case '-': // error
+ $errorMessage = substr($payload, 4);
+ if ($this->_throwErrors) {
+ throw new Predis_ServerException($errorMessage);
+ }
+ return new Predis_ResponseError($errorMessage);
+
+ default:
+ throw new Predis_CommunicationException(
+ $connection, "Unknown prefix: '$prefix'"
+ );
+ }
+ }
+
+ public function setOption($option, $value) {
+ switch ($option) {
+ case 'iterable_multibulk':
+ $this->_iterableMultibulk = (bool) $value;
+ break;
+ case 'throw_on_error':
+ $this->_throwErrors = (bool) $value;
+ break;
+ }
+ }
+
+ public function getOption($option) {
+ switch ($option) {
+ case 'iterable_multibulk':
+ return $this->_iterableMultibulk;
+ case 'throw_on_error':
+ return $this->_throwErrors;
+ }
+ }
+}
+
+class Predis_ResponseReader implements Predis_IResponseReader {
+ private $_prefixHandlers;
+
+ public function __construct() {
+ $this->initializePrefixHandlers();
+ }
+
+ private function initializePrefixHandlers() {
+ $this->_prefixHandlers = array(
+ Predis_Protocol::PREFIX_STATUS => new Predis_ResponseStatusHandler(),
+ Predis_Protocol::PREFIX_ERROR => new Predis_ResponseErrorHandler(),
+ Predis_Protocol::PREFIX_INTEGER => new Predis_ResponseIntegerHandler(),
+ Predis_Protocol::PREFIX_BULK => new Predis_ResponseBulkHandler(),
+ Predis_Protocol::PREFIX_MULTI_BULK => new Predis_ResponseMultiBulkHandler(),
+ );
+ }
+
+ public function setHandler($prefix, Predis_IResponseHandler $handler) {
+ $this->_prefixHandlers[$prefix] = $handler;
+ }
+
+ public function getHandler($prefix) {
+ if (isset($this->_prefixHandlers[$prefix])) {
+ return $this->_prefixHandlers[$prefix];
+ }
+ }
+
+ public function read(Predis_Connection $connection) {
+ $header = $connection->readLine();
+ if ($header === '') {
+ $this->throwMalformedResponse($connection, 'Unexpected empty header');
+ }
+
+ $prefix = $header[0];
+ if (!isset($this->_prefixHandlers[$prefix])) {
+ $this->throwMalformedResponse($connection, "Unknown prefix '$prefix'");
+ }
+
+ $handler = $this->_prefixHandlers[$prefix];
+ return $handler->handle($connection, substr($header, 1));
+ }
+
+ private function throwMalformedResponse(Predis_Connection $connection, $message) {
+ Predis_Shared_Utils::onCommunicationException(new Predis_MalformedServerResponse(
+ $connection, $message
+ ));
+ }
+
+ public function setOption($option, $value) {
+ switch ($option) {
+ case 'iterable_multibulk':
+ $handler = $value ? 'Predis_ResponseMultiBulkStreamHandler' : 'Predis_ResponseMultiBulkHandler';
+ $this->_prefixHandlers[Predis_Protocol::PREFIX_MULTI_BULK] = new $handler();
+ break;
+ case 'throw_on_error':
+ $handler = $value ? 'Predis_ResponseErrorHandler' : 'Predis_ResponseErrorSilentHandler';
+ $this->_prefixHandlers[Predis_Protocol::PREFIX_ERROR] = new $handler();
+ break;
+ }
+ }
+
+ public function getOption($option) {
+ switch ($option) {
+ case 'iterable_multibulk':
+ return $this->_prefixHandlers[Predis_Protocol::PREFIX_MULTI_BULK] instanceof Predis_ResponseMultiBulkStreamHandler;
+ case 'throw_on_error':
+ return $this->_prefixHandlers[Predis_Protocol::PREFIX_ERROR] instanceof Predis_ResponseErrorHandler;
+ }
+ }
+}
+
+class Predis_ResponseError {
+ public $skipParse = true;
+ private $_message;
+
+ public function __construct($message) {
+ $this->_message = $message;
+ }
+
+ public function __get($property) {
+ if ($property === 'error') {
+ return true;
+ }
+ if ($property === 'message') {
+ return $this->_message;
+ }
+ }
+
+ public function __isset($property) {
+ return $property === 'error';
+ }
+
+ public function __toString() {
+ return $this->_message;
+ }
+}
+
+class Predis_ResponseQueued {
+ public $skipParse = true;
+
+ public function __toString() {
+ return Predis_Protocol::QUEUED;
+ }
+
+ public function __get($property) {
+ if ($property === 'queued') {
+ return true;
+ }
+ }
+
+ public function __isset($property) {
+ return $property === 'queued';
+ }
+}
+
+/* ------------------------------------------------------------------------- */
+
+class Predis_CommandPipeline {
+ private $_redisClient, $_pipelineBuffer, $_returnValues, $_running, $_executor;
+
+ public function __construct(Predis_Client $redisClient, Predis_Pipeline_IPipelineExecutor $executor = null) {
+ $this->_redisClient = $redisClient;
+ $this->_executor = $executor !== null ? $executor : new Predis_Pipeline_StandardExecutor();
+ $this->_pipelineBuffer = array();
+ $this->_returnValues = array();
+ }
+
+ public function __call($method, $arguments) {
+ $command = $this->_redisClient->createCommand($method, $arguments);
+ $this->recordCommand($command);
+ return $this;
+ }
+
+ private function recordCommand(Predis_Command $command) {
+ $this->_pipelineBuffer[] = $command;
+ }
+
+ private function getRecordedCommands() {
+ return $this->_pipelineBuffer;
+ }
+
+ public function flushPipeline() {
+ if (count($this->_pipelineBuffer) > 0) {
+ $connection = $this->_redisClient->getConnection();
+ $this->_returnValues = array_merge(
+ $this->_returnValues,
+ $this->_executor->execute($connection, $this->_pipelineBuffer)
+ );
+ $this->_pipelineBuffer = array();
+ }
+ return $this;
+ }
+
+ private function setRunning($bool) {
+ if ($bool == true && $this->_running == true) {
+ throw new Predis_ClientException("This pipeline is already opened");
+ }
+ $this->_running = $bool;
+ }
+
+ public function execute($block = null) {
+ if ($block && !is_callable($block)) {
+ throw new InvalidArgumentException('Argument passed must be a callable object');
+ }
+
+ // TODO: do not reuse previously executed pipelines
+ $this->setRunning(true);
+ $pipelineBlockException = null;
+
+ try {
+ if ($block !== null) {
+ $block($this);
+ }
+ $this->flushPipeline();
+ }
+ catch (Exception $exception) {
+ $pipelineBlockException = $exception;
+ }
+
+ $this->setRunning(false);
+
+ if ($pipelineBlockException !== null) {
+ throw $pipelineBlockException;
+ }
+
+ return $this->_returnValues;
+ }
+}
+
+class Predis_MultiExecBlock {
+ private $_initialized, $_discarded, $_insideBlock, $_checkAndSet, $_watchedKeys;
+ private $_redisClient, $_options, $_commands;
+ private $_supportsWatch;
+
+ public function __construct(Predis_Client $redisClient, Array $options = null) {
+ $this->checkCapabilities($redisClient);
+ $this->_options = isset($options) ? $options : array();
+ $this->_redisClient = $redisClient;
+ $this->reset();
+ }
+
+ private function checkCapabilities(Predis_Client $redisClient) {
+ if (Predis_Shared_Utils::isCluster($redisClient->getConnection())) {
+ throw new Predis_ClientException(
+ 'Cannot initialize a MULTI/EXEC context over a cluster of connections'
+ );
+ }
+ $profile = $redisClient->getProfile();
+ if ($profile->supportsCommands(array('multi', 'exec', 'discard')) === false) {
+ throw new Predis_ClientException(
+ 'The current profile does not support MULTI, EXEC and DISCARD commands'
+ );
+ }
+ $this->_supportsWatch = $profile->supportsCommands(array('watch', 'unwatch'));
+ }
+
+ private function isWatchSupported() {
+ if ($this->_supportsWatch === false) {
+ throw new Predis_ClientException(
+ 'The current profile does not support WATCH and UNWATCH commands'
+ );
+ }
+ }
+
+ private function reset() {
+ $this->_initialized = false;
+ $this->_discarded = false;
+ $this->_checkAndSet = false;
+ $this->_insideBlock = false;
+ $this->_watchedKeys = false;
+ $this->_commands = array();
+ }
+
+ private function initialize() {
+ if ($this->_initialized === true) {
+ return;
+ }
+ $options = &$this->_options;
+ $this->_checkAndSet = isset($options['cas']) && $options['cas'];
+ if (isset($options['watch'])) {
+ $this->watch($options['watch']);
+ }
+ if (!$this->_checkAndSet || ($this->_discarded && $this->_checkAndSet)) {
+ $this->_redisClient->multi();
+ if ($this->_discarded) {
+ $this->_checkAndSet = false;
+ }
+ }
+ $this->_initialized = true;
+ $this->_discarded = false;
+ }
+
+ public function __call($method, $arguments) {
+ $this->initialize();
+ $client = $this->_redisClient;
+ if ($this->_checkAndSet) {
+ return call_user_func_array(array($client, $method), $arguments);
+ }
+ $command = $client->createCommand($method, $arguments);
+ $response = $client->executeCommand($command);
+ if (!$response instanceof Predis_ResponseQueued) {
+ $this->malformedServerResponse(
+ 'The server did not respond with a QUEUED status reply'
+ );
+ }
+ $this->_commands[] = $command;
+ return $this;
+ }
+
+ public function watch($keys) {
+ $this->isWatchSupported();
+ if ($this->_initialized && !$this->_checkAndSet) {
+ throw new Predis_ClientException('WATCH inside MULTI is not allowed');
+ }
+ $this->_watchedKeys = true;
+ return $this->_redisClient->watch($keys);
+ }
+
+ public function multi() {
+ if ($this->_initialized && $this->_checkAndSet) {
+ $this->_checkAndSet = false;
+ $this->_redisClient->multi();
+ return $this;
+ }
+ $this->initialize();
+ return $this;
+ }
+
+ public function unwatch() {
+ $this->isWatchSupported();
+ $this->_watchedKeys = false;
+ $this->_redisClient->unwatch();
+ return $this;
+ }
+
+ public function discard() {
+ if ($this->_initialized === true) {
+ $command = $this->_checkAndSet ? 'unwatch' : 'discard';
+ $this->_redisClient->$command();
+ $this->reset();
+ $this->_discarded = true;
+ }
+ return $this;
+ }
+
+ public function exec() {
+ return $this->execute();
+ }
+
+ private function checkBeforeExecution($block) {
+ if ($this->_insideBlock === true) {
+ throw new Predis_ClientException(
+ "Cannot invoke 'execute' or 'exec' inside an active client transaction block"
+ );
+ }
+ if ($block) {
+ if (!is_callable($block)) {
+ throw new InvalidArgumentException(
+ 'Argument passed must be a callable object'
+ );
+ }
+ if (count($this->_commands) > 0) {
+ $this->discard();
+ throw new Predis_ClientException(
+ 'Cannot execute a transaction block after using fluent interface'
+ );
+ }
+ }
+ if (isset($this->_options['retry']) && !isset($block)) {
+ $this->discard();
+ throw new InvalidArgumentException(
+ 'Automatic retries can be used only when a transaction block is provided'
+ );
+ }
+ }
+
+ public function execute($block = null) {
+ $this->checkBeforeExecution($block);
+
+ $reply = null;
+ $returnValues = array();
+ $attemptsLeft = isset($this->_options['retry']) ? (int)$this->_options['retry'] : 0;
+ do {
+ $blockException = null;
+ if ($block !== null) {
+ $this->_insideBlock = true;
+ try {
+ $block($this);
+ }
+ catch (Predis_CommunicationException $exception) {
+ $blockException = $exception;
+ }
+ catch (Predis_ServerException $exception) {
+ $blockException = $exception;
+ }
+ catch (Exception $exception) {
+ $blockException = $exception;
+ $this->discard();
+ }
+ $this->_insideBlock = false;
+ if ($blockException !== null) {
+ throw $blockException;
+ }
+ }
+
+ if (count($this->_commands) === 0) {
+ if ($this->_watchedKeys) {
+ $this->discard();
+ return;
+ }
+ return;
+ }
+
+ $reply = $this->_redisClient->exec();
+ if ($reply === null) {
+ if ($attemptsLeft === 0) {
+ throw new Predis_AbortedMultiExec(
+ 'The current transaction has been aborted by the server'
+ );
+ }
+ $this->reset();
+ if (isset($this->_options['on_retry']) && is_callable($this->_options['on_retry'])) {
+ call_user_func($this->_options['on_retry'], $this, $attemptsLeft);
+ }
+ continue;
+ }
+ break;
+ } while ($attemptsLeft-- > 0);
+
+ $execReply = $reply instanceof Iterator ? iterator_to_array($reply) : $reply;
+ $sizeofReplies = count($execReply);
+
+ $commands = &$this->_commands;
+ if ($sizeofReplies !== count($commands)) {
+ $this->malformedServerResponse(
+ 'Unexpected number of responses for a MultiExecBlock'
+ );
+ }
+ for ($i = 0; $i < $sizeofReplies; $i++) {
+ $returnValues[] = $commands[$i]->parseResponse($execReply[$i] instanceof Iterator
+ ? iterator_to_array($execReply[$i])
+ : $execReply[$i]
+ );
+ unset($commands[$i]);
+ }
+
+ return $returnValues;
+ }
+
+ private function malformedServerResponse($message) {
+ // Since a MULTI/EXEC block cannot be initialized over a clustered
+ // connection, we can safely assume that Predis_Client::getConnection()
+ // will always return an instance of Predis_Connection.
+ Predis_Shared_Utils::onCommunicationException(
+ new Predis_MalformedServerResponse(
+ $this->_redisClient->getConnection(), $message
+ )
+ );
+ }
+}
+
+class Predis_PubSubContext implements Iterator {
+ const SUBSCRIBE = 'subscribe';
+ const UNSUBSCRIBE = 'unsubscribe';
+ const PSUBSCRIBE = 'psubscribe';
+ const PUNSUBSCRIBE = 'punsubscribe';
+ const MESSAGE = 'message';
+ const PMESSAGE = 'pmessage';
+
+ const STATUS_VALID = 0x0001;
+ const STATUS_SUBSCRIBED = 0x0010;
+ const STATUS_PSUBSCRIBED = 0x0100;
+
+ private $_redisClient, $_position, $_options;
+
+ public function __construct(Predis_Client $redisClient, Array $options = null) {
+ $this->checkCapabilities($redisClient);
+ $this->_options = isset($options) ? $options : array();
+ $this->_redisClient = $redisClient;
+ $this->_statusFlags = self::STATUS_VALID;
+
+ $this->genericSubscribeInit('subscribe');
+ $this->genericSubscribeInit('psubscribe');
+ }
+
+ public function __destruct() {
+ if ($this->valid()) {
+ $this->closeContext();
+ }
+ }
+
+ private function checkCapabilities(Predis_Client $redisClient) {
+ if (Predis_Shared_Utils::isCluster($redisClient->getConnection())) {
+ throw new Predis_ClientException(
+ 'Cannot initialize a PUB/SUB context over a cluster of connections'
+ );
+ }
+ $profile = $redisClient->getProfile();
+ $commands = array('publish', 'subscribe', 'unsubscribe', 'psubscribe', 'punsubscribe');
+ if ($profile->supportsCommands($commands) === false) {
+ throw new Predis_ClientException(
+ 'The current profile does not support PUB/SUB related commands'
+ );
+ }
+ }
+
+ private function genericSubscribeInit($subscribeAction) {
+ if (isset($this->_options[$subscribeAction])) {
+ $this->$subscribeAction($this->_options[$subscribeAction]);
+ }
+ }
+
+ private function isFlagSet($value) {
+ return ($this->_statusFlags & $value) === $value;
+ }
+
+ public function subscribe(/* arguments */) {
+ $args = func_get_args();
+ $this->writeCommand(self::SUBSCRIBE, $args);
+ $this->_statusFlags |= self::STATUS_SUBSCRIBED;
+ }
+
+ public function unsubscribe(/* arguments */) {
+ $args = func_get_args();
+ $this->writeCommand(self::UNSUBSCRIBE, $args);
+ }
+
+ public function psubscribe(/* arguments */) {
+ $args = func_get_args();
+ $this->writeCommand(self::PSUBSCRIBE, $args);
+ $this->_statusFlags |= self::STATUS_PSUBSCRIBED;
+ }
+
+ public function punsubscribe(/* arguments */) {
+ $args = func_get_args();
+ $this->writeCommand(self::PUNSUBSCRIBE, $args);
+ }
+
+ public function closeContext() {
+ if ($this->valid()) {
+ if ($this->isFlagSet(self::STATUS_SUBSCRIBED)) {
+ $this->unsubscribe();
+ }
+ if ($this->isFlagSet(self::STATUS_PSUBSCRIBED)) {
+ $this->punsubscribe();
+ }
+ }
+ }
+
+ private function writeCommand($method, $arguments) {
+ if (count($arguments) === 1 && is_array($arguments[0])) {
+ $arguments = $arguments[0];
+ }
+ $command = $this->_redisClient->createCommand($method, $arguments);
+ $this->_redisClient->getConnection()->writeCommand($command);
+ }
+
+ public function rewind() {
+ // NOOP
+ }
+
+ public function current() {
+ return $this->getValue();
+ }
+
+ public function key() {
+ return $this->_position;
+ }
+
+ public function next() {
+ if ($this->isFlagSet(self::STATUS_VALID)) {
+ $this->_position++;
+ }
+ return $this->_position;
+ }
+
+ public function valid() {
+ $subscriptions = self::STATUS_SUBSCRIBED + self::STATUS_PSUBSCRIBED;
+ return $this->isFlagSet(self::STATUS_VALID)
+ && ($this->_statusFlags & $subscriptions) > 0;
+ }
+
+ private function invalidate() {
+ $this->_statusFlags = 0x0000;
+ }
+
+ private function getValue() {
+ $reader = $this->_redisClient->getResponseReader();
+ $connection = $this->_redisClient->getConnection();
+ $response = $reader->read($connection);
+
+ switch ($response[0]) {
+ case self::SUBSCRIBE:
+ case self::UNSUBSCRIBE:
+ case self::PSUBSCRIBE:
+ case self::PUNSUBSCRIBE:
+ if ($response[2] === 0) {
+ $this->invalidate();
+ }
+ case self::MESSAGE:
+ return (object) array(
+ 'kind' => $response[0],
+ 'channel' => $response[1],
+ 'payload' => $response[2],
+ );
+ case self::PMESSAGE:
+ return (object) array(
+ 'kind' => $response[0],
+ 'pattern' => $response[1],
+ 'channel' => $response[2],
+ 'payload' => $response[3],
+ );
+ default:
+ throw new Predis_ClientException(
+ "Received an unknown message type {$response[0]} inside of a pubsub context"
+ );
+ }
+ }
+}
+
+/* ------------------------------------------------------------------------- */
+
+class Predis_ConnectionParameters {
+ const DEFAULT_SCHEME = 'redis';
+ const DEFAULT_HOST = '127.0.0.1';
+ const DEFAULT_PORT = 6379;
+ const DEFAULT_TIMEOUT = 5;
+
+ private static $_defaultParameters = array(
+ 'scheme' => self::DEFAULT_SCHEME,
+ 'host' => self::DEFAULT_HOST,
+ 'port' => self::DEFAULT_PORT,
+ 'database' => null,
+ 'password' => null,
+ 'connection_async' => false,
+ 'connection_persistent' => false,
+ 'connection_timeout' => self::DEFAULT_TIMEOUT,
+ 'read_write_timeout' => null,
+ 'alias' => null,
+ 'weight' => null,
+ 'path' => null,
+ );
+
+ private $_parameters;
+
+ public function __construct($parameters = null) {
+ $parameters = $parameters !== null ? $parameters : array();
+ $extractor = is_array($parameters) ? 'filter' : 'parseURI';
+ $this->_parameters = $this->$extractor($parameters);
+ }
+
+ private function parseURI($uri) {
+ if (stripos($uri, 'unix') === 0) {
+ // Hack to support URIs for UNIX sockets with minimal effort.
+ $uri = str_ireplace('unix:///', 'unix://localhost/', $uri);
+ }
+ if (($parsed = @parse_url($uri)) === false || !isset($parsed['host'])) {
+ throw new Predis_ClientException("Invalid URI: $uri");
+ }
+ if (isset($parsed['query'])) {
+ foreach (explode('&', $parsed['query']) as $kv) {
+ @list($k, $v) = explode('=', $kv);
+ $parsed[$k] = $v;
+ }
+ unset($parsed['query']);
+ }
+ return $this->filter($parsed);
+ }
+
+ private function filter($parameters) {
+ return array_merge(self::$_defaultParameters, $parameters);
+ }
+
+ public function __get($parameter) {
+ return $this->_parameters[$parameter];
+ }
+
+ public function __isset($parameter) {
+ return isset($this->_parameters[$parameter]);
+ }
+}
+
+interface Predis_IConnection {
+ public function connect();
+ public function disconnect();
+ public function isConnected();
+ public function writeCommand(Predis_Command $command);
+ public function readResponse(Predis_Command $command);
+ public function executeCommand(Predis_Command $command);
+}
+
+class Predis_Connection implements Predis_IConnection {
+ private static $_allowedSchemes = array('redis', 'tcp', 'unix');
+ private $_params, $_socket, $_initCmds, $_reader;
+
+ public function __construct(Predis_ConnectionParameters $parameters, Predis_IResponseReader $reader = null) {
+ if (!in_array($parameters->scheme, self::$_allowedSchemes)) {
+ throw new InvalidArgumentException("Invalid scheme: {$parameters->scheme}");
+ }
+ $this->_params = $parameters;
+ $this->_initCmds = array();
+ $this->_reader = $reader !== null ? $reader : new Predis_FastResponseReader();
+ }
+
+ public function __destruct() {
+ if (!$this->_params->connection_persistent) {
+ $this->disconnect();
+ }
+ }
+
+ public function isConnected() {
+ return isset($this->_socket);
+ }
+
+ public function connect() {
+ if ($this->isConnected()) {
+ throw new Predis_ClientException('Connection already estabilished');
+ }
+ $initializer = "{$this->_params->scheme}StreamInitializer";
+ $this->_socket = $this->$initializer($this->_params);
+ if (count($this->_initCmds) > 0){
+ $this->sendInitializationCommands();
+ }
+ }
+
+ private function tcpStreamInitializer(Predis_ConnectionParameters $parameters) {
+ return $this->redisStreamInitializer($parameters);
+ }
+
+ private function redisStreamInitializer(Predis_ConnectionParameters $parameters) {
+ $uri = sprintf('tcp://%s:%d/', $parameters->host, $parameters->port);
+ $connectFlags = STREAM_CLIENT_CONNECT;
+ if ($parameters->connection_async) {
+ $connectFlags |= STREAM_CLIENT_ASYNC_CONNECT;
+ }
+ if ($parameters->connection_persistent) {
+ $connectFlags |= STREAM_CLIENT_PERSISTENT;
+ }
+ $socket = @stream_socket_client(
+ $uri, $errno, $errstr, $parameters->connection_timeout, $connectFlags
+ );
+
+ if (!$socket) {
+ $this->onCommunicationException(trim($errstr), $errno);
+ }
+
+ if (isset($parameters->read_write_timeout)) {
+ $rwtimeout = $parameters->read_write_timeout;
+ $rwtimeout = $rwtimeout > 0 ? $rwtimeout : -1;
+ $timeoutSeconds = floor($parameters->read_write_timeout);
+ $timeoutUSeconds = ($rwtimeout - $timeoutSeconds) * 1000000;
+ stream_set_timeout($socket, $rwtimeout, $timeoutUSeconds);
+ }
+ return $socket;
+ }
+
+ private function unixStreamInitializer(Predis_ConnectionParameters $parameters) {
+ $uri = sprintf('unix:///%s', $parameters->path);
+ $connectFlags = STREAM_CLIENT_CONNECT;
+ if ($parameters->connection_persistent) {
+ $connectFlags |= STREAM_CLIENT_PERSISTENT;
+ }
+ $socket = @stream_socket_client(
+ $uri, $errno, $errstr, $parameters->connection_timeout, $connectFlags
+ );
+ if (!$socket) {
+ $this->onCommunicationException(trim($errstr), $errno);
+ }
+ return $socket;
+ }
+
+ public function disconnect() {
+ if ($this->isConnected()) {
+ fclose($this->_socket);
+ unset($this->_socket);
+ }
+ }
+
+ public function pushInitCommand(Predis_Command $command){
+ $this->_initCmds[] = $command;
+ }
+
+ private function sendInitializationCommands() {
+ foreach ($this->_initCmds as $command) {
+ $this->writeCommand($command);
+ }
+ foreach ($this->_initCmds as $command) {
+ $this->readResponse($command);
+ }
+ }
+
+ private function onCommunicationException($message, $code = null) {
+ Predis_Shared_Utils::onCommunicationException(
+ new Predis_CommunicationException($this, $message, $code)
+ );
+ }
+
+ public function writeCommand(Predis_Command $command) {
+ $this->writeBytes($command->invoke());
+ }
+
+ public function readResponse(Predis_Command $command) {
+ $response = $this->_reader->read($this);
+ return isset($response->skipParse) ? $response : $command->parseResponse($response);
+ }
+
+ public function executeCommand(Predis_Command $command) {
+ $this->writeCommand($command);
+ if ($command->closesConnection()) {
+ return $this->disconnect();
+ }
+ return $this->readResponse($command);
+ }
+
+ public function rawCommand($rawCommandData, $closesConnection = false) {
+ $this->writeBytes($rawCommandData);
+ if ($closesConnection) {
+ $this->disconnect();
+ return;
+ }
+ return $this->_reader->read($this);
+ }
+
+ public function writeBytes($value) {
+ $socket = $this->getSocket();
+ while (($length = strlen($value)) > 0) {
+ $written = fwrite($socket, $value);
+ if ($length === $written) {
+ return true;
+ }
+ if ($written === false || $written === 0) {
+ $this->onCommunicationException('Error while writing bytes to the server');
+ }
+ $value = substr($value, $written);
+ }
+ return true;
+ }
+
+ public function readBytes($length) {
+ if ($length <= 0) {
+ throw new InvalidArgumentException('Length parameter must be greater than 0');
+ }
+ $socket = $this->getSocket();
+ $value = '';
+ do {
+ $chunk = fread($socket, $length);
+ if ($chunk === false || $chunk === '') {
+ $this->onCommunicationException('Error while reading bytes from the server');
+ }
+ $value .= $chunk;
+ }
+ while (($length -= strlen($chunk)) > 0);
+ return $value;
+ }
+
+ public function readLine() {
+ $socket = $this->getSocket();
+ $value = '';
+ do {
+ $chunk = fgets($socket);
+ if ($chunk === false || $chunk === '') {
+ $this->onCommunicationException('Error while reading line from the server');
+ }
+ $value .= $chunk;
+ }
+ while (substr($value, -2) !== "\r\n");
+ return substr($value, 0, -2);
+ }
+
+ public function getSocket() {
+ if (isset($this->_socket)) {
+ return $this->_socket;
+ }
+ $this->connect();
+ return $this->_socket;
+ }
+
+ public function getResponseReader() {
+ return $this->_reader;
+ }
+
+ public function getParameters() {
+ return $this->_params;
+ }
+
+ public function __toString() {
+ return sprintf('%s:%d', $this->_params->host, $this->_params->port);
+ }
+}
+
+class Predis_ConnectionCluster implements Predis_IConnection, IteratorAggregate {
+ private $_pool, $_distributor;
+
+ public function __construct(Predis_Distribution_IDistributionStrategy $distributor = null) {
+ $this->_pool = array();
+ $this->_distributor = $distributor !== null ? $distributor : new Predis_Distribution_HashRing();
+ }
+
+ public function isConnected() {
+ foreach ($this->_pool as $connection) {
+ if ($connection->isConnected()) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ public function connect() {
+ foreach ($this->_pool as $connection) {
+ $connection->connect();
+ }
+ }
+
+ public function disconnect() {
+ foreach ($this->_pool as $connection) {
+ $connection->disconnect();
+ }
+ }
+
+ public function add(Predis_Connection $connection) {
+ $parameters = $connection->getParameters();
+ if (isset($parameters->alias)) {
+ $this->_pool[$parameters->alias] = $connection;
+ }
+ else {
+ $this->_pool[] = $connection;
+ }
+ $this->_distributor->add($connection, $parameters->weight);
+ }
+
+ public function getConnection(Predis_Command $command) {
+ if ($command->canBeHashed() === false) {
+ throw new Predis_ClientException(
+ sprintf("Cannot send '%s' commands to a cluster of connections", $command->getCommandId())
+ );
+ }
+ return $this->_distributor->get($command->getHash($this->_distributor));
+ }
+
+ public function getConnectionById($id = null) {
+ $alias = $id !== null ? $id : 0;
+ return isset($this->_pool[$alias]) ? $this->_pool[$alias] : null;
+ }
+
+ public function getIterator() {
+ return new ArrayIterator($this->_pool);
+ }
+
+ public function writeCommand(Predis_Command $command) {
+ $this->getConnection($command)->writeCommand($command);
+ }
+
+ public function readResponse(Predis_Command $command) {
+ return $this->getConnection($command)->readResponse($command);
+ }
+
+ public function executeCommand(Predis_Command $command) {
+ $connection = $this->getConnection($command);
+ $connection->writeCommand($command);
+ return $connection->readResponse($command);
+ }
+}
+
+/* ------------------------------------------------------------------------- */
+
+abstract class Predis_RedisServerProfile {
+ private static $_serverProfiles;
+ private $_registeredCommands;
+
+ public function __construct() {
+ $this->_registeredCommands = $this->getSupportedCommands();
+ }
+
+ public abstract function getVersion();
+
+ protected abstract function getSupportedCommands();
+
+ public static function getDefault() {
+ return self::get('default');
+ }
+
+ public static function getDevelopment() {
+ return self::get('dev');
+ }
+
+ private static function predisServerProfiles() {
+ return array(
+ '1.2' => 'Predis_RedisServer_v1_2',
+ '2.0' => 'Predis_RedisServer_v2_0',
+ '2.2' => 'Predis_RedisServer_v2_2',
+ 'default' => 'Predis_RedisServer_v2_2',
+ 'dev' => 'Predis_RedisServer_vNext',
+ );
+ }
+
+ public static function registerProfile($profileClass, $aliases) {
+ if (!isset(self::$_serverProfiles)) {
+ self::$_serverProfiles = self::predisServerProfiles();
+ }
+
+ $profileReflection = new ReflectionClass($profileClass);
+
+ if (!$profileReflection->isSubclassOf('Predis_RedisServerProfile')) {
+ throw new Predis_ClientException("Cannot register '$profileClass' as it is not a valid profile class");
+ }
+
+ if (is_array($aliases)) {
+ foreach ($aliases as $alias) {
+ self::$_serverProfiles[$alias] = $profileClass;
+ }
+ }
+ else {
+ self::$_serverProfiles[$aliases] = $profileClass;
+ }
+ }
+
+ public static function get($version) {
+ if (!isset(self::$_serverProfiles)) {
+ self::$_serverProfiles = self::predisServerProfiles();
+ }
+ if (!isset(self::$_serverProfiles[$version])) {
+ throw new Predis_ClientException("Unknown server profile: $version");
+ }
+ $profile = self::$_serverProfiles[$version];
+ return new $profile();
+ }
+
+ public function supportsCommands(Array $commands) {
+ foreach ($commands as $command) {
+ if ($this->supportsCommand($command) === false) {
+ return false;
+ }
+ }
+ return true;
+ }
+
+ public function supportsCommand($command) {
+ return isset($this->_registeredCommands[$command]);
+ }
+
+ public function createCommand($method, $arguments = array()) {
+ if (!isset($this->_registeredCommands[$method])) {
+ throw new Predis_ClientException("'$method' is not a registered Redis command");
+ }
+ $commandClass = $this->_registeredCommands[$method];
+ $command = new $commandClass();
+ $command->setArgumentsArray($arguments);
+ return $command;
+ }
+
+ public function registerCommands(Array $commands) {
+ foreach ($commands as $command => $aliases) {
+ $this->registerCommand($command, $aliases);
+ }
+ }
+
+ public function registerCommand($command, $aliases) {
+ $commandReflection = new ReflectionClass($command);
+
+ if (!$commandReflection->isSubclassOf('Predis_Command')) {
+ throw new ClientException("Cannot register '$command' as it is not a valid Redis command");
+ }
+
+ if (is_array($aliases)) {
+ foreach ($aliases as $alias) {
+ $this->_registeredCommands[$alias] = $command;
+ }
+ }
+ else {
+ $this->_registeredCommands[$aliases] = $command;
+ }
+ }
+
+ public function __toString() {
+ return $this->getVersion();
+ }
+}
+
+class Predis_RedisServer_v1_2 extends Predis_RedisServerProfile {
+ public function getVersion() { return '1.2'; }
+ public function getSupportedCommands() {
+ return array(
+ /* ---------------- Redis 1.2 ---------------- */
+
+ /* miscellaneous commands */
+ 'ping' => 'Predis_Commands_Ping',
+ 'echo' => 'Predis_Commands_DoEcho',
+ 'auth' => 'Predis_Commands_Auth',
+
+ /* connection handling */
+ 'quit' => 'Predis_Commands_Quit',
+
+ /* commands operating on string values */
+ 'set' => 'Predis_Commands_Set',
+ 'setnx' => 'Predis_Commands_SetPreserve',
+ 'mset' => 'Predis_Commands_SetMultiple',
+ 'msetnx' => 'Predis_Commands_SetMultiplePreserve',
+ 'get' => 'Predis_Commands_Get',
+ 'mget' => 'Predis_Commands_GetMultiple',
+ 'getset' => 'Predis_Commands_GetSet',
+ 'incr' => 'Predis_Commands_Increment',
+ 'incrby' => 'Predis_Commands_IncrementBy',
+ 'decr' => 'Predis_Commands_Decrement',
+ 'decrby' => 'Predis_Commands_DecrementBy',
+ 'exists' => 'Predis_Commands_Exists',
+ 'del' => 'Predis_Commands_Delete',
+ 'type' => 'Predis_Commands_Type',
+
+ /* commands operating on the key space */
+ 'keys' => 'Predis_Commands_Keys_v1_2',
+ 'randomkey' => 'Predis_Commands_RandomKey',
+ 'rename' => 'Predis_Commands_Rename',
+ 'renamenx' => 'Predis_Commands_RenamePreserve',
+ 'expire' => 'Predis_Commands_Expire',
+ 'expireat' => 'Predis_Commands_ExpireAt',
+ 'dbsize' => 'Predis_Commands_DatabaseSize',
+ 'ttl' => 'Predis_Commands_TimeToLive',
+
+ /* commands operating on lists */
+ 'rpush' => 'Predis_Commands_ListPushTail',
+ 'lpush' => 'Predis_Commands_ListPushHead',
+ 'llen' => 'Predis_Commands_ListLength',
+ 'lrange' => 'Predis_Commands_ListRange',
+ 'ltrim' => 'Predis_Commands_ListTrim',
+ 'lindex' => 'Predis_Commands_ListIndex',
+ 'lset' => 'Predis_Commands_ListSet',
+ 'lrem' => 'Predis_Commands_ListRemove',
+ 'lpop' => 'Predis_Commands_ListPopFirst',
+ 'rpop' => 'Predis_Commands_ListPopLast',
+ 'rpoplpush' => 'Predis_Commands_ListPopLastPushHead',
+
+ /* commands operating on sets */
+ 'sadd' => 'Predis_Commands_SetAdd',
+ 'srem' => 'Predis_Commands_SetRemove',
+ 'spop' => 'Predis_Commands_SetPop',
+ 'smove' => 'Predis_Commands_SetMove',
+ 'scard' => 'Predis_Commands_SetCardinality',
+ 'sismember' => 'Predis_Commands_SetIsMember',
+ 'sinter' => 'Predis_Commands_SetIntersection',
+ 'sinterstore' => 'Predis_Commands_SetIntersectionStore',
+ 'sunion' => 'Predis_Commands_SetUnion',
+ 'sunionstore' => 'Predis_Commands_SetUnionStore',
+ 'sdiff' => 'Predis_Commands_SetDifference',
+ 'sdiffstore' => 'Predis_Commands_SetDifferenceStore',
+ 'smembers' => 'Predis_Commands_SetMembers',
+ 'srandmember' => 'Predis_Commands_SetRandomMember',
+
+ /* commands operating on sorted sets */
+ 'zadd' => 'Predis_Commands_ZSetAdd',
+ 'zincrby' => 'Predis_Commands_ZSetIncrementBy',
+ 'zrem' => 'Predis_Commands_ZSetRemove',
+ 'zrange' => 'Predis_Commands_ZSetRange',
+ 'zrevrange' => 'Predis_Commands_ZSetReverseRange',
+ 'zrangebyscore' => 'Predis_Commands_ZSetRangeByScore',
+ 'zcard' => 'Predis_Commands_ZSetCardinality',
+ 'zscore' => 'Predis_Commands_ZSetScore',
+ 'zremrangebyscore' => 'Predis_Commands_ZSetRemoveRangeByScore',
+
+ /* multiple databases handling commands */
+ 'select' => 'Predis_Commands_SelectDatabase',
+ 'move' => 'Predis_Commands_MoveKey',
+ 'flushdb' => 'Predis_Commands_FlushDatabase',
+ 'flushall' => 'Predis_Commands_FlushAll',
+
+ /* sorting */
+ 'sort' => 'Predis_Commands_Sort',
+
+ /* remote server control commands */
+ 'info' => 'Predis_Commands_Info',
+ 'slaveof' => 'Predis_Commands_SlaveOf',
+
+ /* persistence control commands */
+ 'save' => 'Predis_Commands_Save',
+ 'bgsave' => 'Predis_Commands_BackgroundSave',
+ 'lastsave' => 'Predis_Commands_LastSave',
+ 'shutdown' => 'Predis_Commands_Shutdown',
+ 'bgrewriteaof' => 'Predis_Commands_BackgroundRewriteAppendOnlyFile',
+ );
+ }
+}
+
+class Predis_RedisServer_v2_0 extends Predis_RedisServerProfile {
+ public function getVersion() { return '2.0'; }
+ public function getSupportedCommands() {
+ return array(
+ /* ---------------- Redis 1.2 ---------------- */
+
+ /* miscellaneous commands */
+ 'ping' => 'Predis_Commands_Ping',
+ 'echo' => 'Predis_Commands_DoEcho',
+ 'auth' => 'Predis_Commands_Auth',
+
+ /* connection handling */
+ 'quit' => 'Predis_Commands_Quit',
+
+ /* commands operating on string values */
+ 'set' => 'Predis_Commands_Set',
+ 'setnx' => 'Predis_Commands_SetPreserve',
+ 'mset' => 'Predis_Commands_SetMultiple',
+ 'msetnx' => 'Predis_Commands_SetMultiplePreserve',
+ 'get' => 'Predis_Commands_Get',
+ 'mget' => 'Predis_Commands_GetMultiple',
+ 'getset' => 'Predis_Commands_GetSet',
+ 'incr' => 'Predis_Commands_Increment',
+ 'incrby' => 'Predis_Commands_IncrementBy',
+ 'decr' => 'Predis_Commands_Decrement',
+ 'decrby' => 'Predis_Commands_DecrementBy',
+ 'exists' => 'Predis_Commands_Exists',
+ 'del' => 'Predis_Commands_Delete',
+ 'type' => 'Predis_Commands_Type',
+
+ /* commands operating on the key space */
+ 'keys' => 'Predis_Commands_Keys',
+ 'randomkey' => 'Predis_Commands_RandomKey',
+ 'rename' => 'Predis_Commands_Rename',
+ 'renamenx' => 'Predis_Commands_RenamePreserve',
+ 'expire' => 'Predis_Commands_Expire',
+ 'expireat' => 'Predis_Commands_ExpireAt',
+ 'dbsize' => 'Predis_Commands_DatabaseSize',
+ 'ttl' => 'Predis_Commands_TimeToLive',
+
+ /* commands operating on lists */
+ 'rpush' => 'Predis_Commands_ListPushTail',
+ 'lpush' => 'Predis_Commands_ListPushHead',
+ 'llen' => 'Predis_Commands_ListLength',
+ 'lrange' => 'Predis_Commands_ListRange',
+ 'ltrim' => 'Predis_Commands_ListTrim',
+ 'lindex' => 'Predis_Commands_ListIndex',
+ 'lset' => 'Predis_Commands_ListSet',
+ 'lrem' => 'Predis_Commands_ListRemove',
+ 'lpop' => 'Predis_Commands_ListPopFirst',
+ 'rpop' => 'Predis_Commands_ListPopLast',
+ 'rpoplpush' => 'Predis_Commands_ListPopLastPushHead',
+
+ /* commands operating on sets */
+ 'sadd' => 'Predis_Commands_SetAdd',
+ 'srem' => 'Predis_Commands_SetRemove',
+ 'spop' => 'Predis_Commands_SetPop',
+ 'smove' => 'Predis_Commands_SetMove',
+ 'scard' => 'Predis_Commands_SetCardinality',
+ 'sismember' => 'Predis_Commands_SetIsMember',
+ 'sinter' => 'Predis_Commands_SetIntersection',
+ 'sinterstore' => 'Predis_Commands_SetIntersectionStore',
+ 'sunion' => 'Predis_Commands_SetUnion',
+ 'sunionstore' => 'Predis_Commands_SetUnionStore',
+ 'sdiff' => 'Predis_Commands_SetDifference',
+ 'sdiffstore' => 'Predis_Commands_SetDifferenceStore',
+ 'smembers' => 'Predis_Commands_SetMembers',
+ 'srandmember' => 'Predis_Commands_SetRandomMember',
+
+ /* commands operating on sorted sets */
+ 'zadd' => 'Predis_Commands_ZSetAdd',
+ 'zincrby' => 'Predis_Commands_ZSetIncrementBy',
+ 'zrem' => 'Predis_Commands_ZSetRemove',
+ 'zrange' => 'Predis_Commands_ZSetRange',
+ 'zrevrange' => 'Predis_Commands_ZSetReverseRange',
+ 'zrangebyscore' => 'Predis_Commands_ZSetRangeByScore',
+ 'zcard' => 'Predis_Commands_ZSetCardinality',
+ 'zscore' => 'Predis_Commands_ZSetScore',
+ 'zremrangebyscore' => 'Predis_Commands_ZSetRemoveRangeByScore',
+
+ /* multiple databases handling commands */
+ 'select' => 'Predis_Commands_SelectDatabase',
+ 'move' => 'Predis_Commands_MoveKey',
+ 'flushdb' => 'Predis_Commands_FlushDatabase',
+ 'flushall' => 'Predis_Commands_FlushAll',
+
+ /* sorting */
+ 'sort' => 'Predis_Commands_Sort',
+
+ /* remote server control commands */
+ 'info' => 'Predis_Commands_Info',
+ 'slaveof' => 'Predis_Commands_SlaveOf',
+
+ /* persistence control commands */
+ 'save' => 'Predis_Commands_Save',
+ 'bgsave' => 'Predis_Commands_BackgroundSave',
+ 'lastsave' => 'Predis_Commands_LastSave',
+ 'shutdown' => 'Predis_Commands_Shutdown',
+ 'bgrewriteaof' => 'Predis_Commands_BackgroundRewriteAppendOnlyFile',
+
+
+ /* ---------------- Redis 2.0 ---------------- */
+
+ /* transactions */
+ 'multi' => 'Predis_Commands_Multi',
+ 'exec' => 'Predis_Commands_Exec',
+ 'discard' => 'Predis_Commands_Discard',
+
+ /* commands operating on string values */
+ 'setex' => 'Predis_Commands_SetExpire',
+ 'append' => 'Predis_Commands_Append',
+ 'substr' => 'Predis_Commands_Substr',
+
+ /* commands operating on lists */
+ 'blpop' => 'Predis_Commands_ListPopFirstBlocking',
+ 'brpop' => 'Predis_Commands_ListPopLastBlocking',
+
+ /* commands operating on sorted sets */
+ 'zunionstore' => 'Predis_Commands_ZSetUnionStore',
+ 'zinterstore' => 'Predis_Commands_ZSetIntersectionStore',
+ 'zcount' => 'Predis_Commands_ZSetCount',
+ 'zrank' => 'Predis_Commands_ZSetRank',
+ 'zrevrank' => 'Predis_Commands_ZSetReverseRank',
+ 'zremrangebyrank' => 'Predis_Commands_ZSetRemoveRangeByRank',
+
+ /* commands operating on hashes */
+ 'hset' => 'Predis_Commands_HashSet',
+ 'hsetnx' => 'Predis_Commands_HashSetPreserve',
+ 'hmset' => 'Predis_Commands_HashSetMultiple',
+ 'hincrby' => 'Predis_Commands_HashIncrementBy',
+ 'hget' => 'Predis_Commands_HashGet',
+ 'hmget' => 'Predis_Commands_HashGetMultiple',
+ 'hdel' => 'Predis_Commands_HashDelete',
+ 'hexists' => 'Predis_Commands_HashExists',
+ 'hlen' => 'Predis_Commands_HashLength',
+ 'hkeys' => 'Predis_Commands_HashKeys',
+ 'hvals' => 'Predis_Commands_HashValues',
+ 'hgetall' => 'Predis_Commands_HashGetAll',
+
+ /* publish - subscribe */
+ 'subscribe' => 'Predis_Commands_Subscribe',
+ 'unsubscribe' => 'Predis_Commands_Unsubscribe',
+ 'psubscribe' => 'Predis_Commands_SubscribeByPattern',
+ 'punsubscribe' => 'Predis_Commands_UnsubscribeByPattern',
+ 'publish' => 'Predis_Commands_Publish',
+
+ /* remote server control commands */
+ 'config' => 'Predis_Commands_Config',
+ );
+ }
+}
+
+class Predis_RedisServer_v2_2 extends Predis_RedisServerProfile {
+ public function getVersion() { return '2.2'; }
+ public function getSupportedCommands() {
+ return array(
+ /* ---------------- Redis 1.2 ---------------- */
+
+ /* miscellaneous commands */
+ 'ping' => 'Predis_Commands_Ping',
+ 'echo' => 'Predis_Commands_DoEcho',
+ 'auth' => 'Predis_Commands_Auth',
+
+ /* connection handling */
+ 'quit' => 'Predis_Commands_Quit',
+
+ /* commands operating on string values */
+ 'set' => 'Predis_Commands_Set',
+ 'setnx' => 'Predis_Commands_SetPreserve',
+ 'mset' => 'Predis_Commands_SetMultiple',
+ 'msetnx' => 'Predis_Commands_SetMultiplePreserve',
+ 'get' => 'Predis_Commands_Get',
+ 'mget' => 'Predis_Commands_GetMultiple',
+ 'getset' => 'Predis_Commands_GetSet',
+ 'incr' => 'Predis_Commands_Increment',
+ 'incrby' => 'Predis_Commands_IncrementBy',
+ 'decr' => 'Predis_Commands_Decrement',
+ 'decrby' => 'Predis_Commands_DecrementBy',
+ 'exists' => 'Predis_Commands_Exists',
+ 'del' => 'Predis_Commands_Delete',
+ 'type' => 'Predis_Commands_Type',
+
+ /* commands operating on the key space */
+ 'keys' => 'Predis_Commands_Keys',
+ 'randomkey' => 'Predis_Commands_RandomKey',
+ 'rename' => 'Predis_Commands_Rename',
+ 'renamenx' => 'Predis_Commands_RenamePreserve',
+ 'expire' => 'Predis_Commands_Expire',
+ 'expireat' => 'Predis_Commands_ExpireAt',
+ 'dbsize' => 'Predis_Commands_DatabaseSize',
+ 'ttl' => 'Predis_Commands_TimeToLive',
+
+ /* commands operating on lists */
+ 'rpush' => 'Predis_Commands_ListPushTail',
+ 'lpush' => 'Predis_Commands_ListPushHead',
+ 'llen' => 'Predis_Commands_ListLength',
+ 'lrange' => 'Predis_Commands_ListRange',
+ 'ltrim' => 'Predis_Commands_ListTrim',
+ 'lindex' => 'Predis_Commands_ListIndex',
+ 'lset' => 'Predis_Commands_ListSet',
+ 'lrem' => 'Predis_Commands_ListRemove',
+ 'lpop' => 'Predis_Commands_ListPopFirst',
+ 'rpop' => 'Predis_Commands_ListPopLast',
+ 'rpoplpush' => 'Predis_Commands_ListPopLastPushHead',
+
+ /* commands operating on sets */
+ 'sadd' => 'Predis_Commands_SetAdd',
+ 'srem' => 'Predis_Commands_SetRemove',
+ 'spop' => 'Predis_Commands_SetPop',
+ 'smove' => 'Predis_Commands_SetMove',
+ 'scard' => 'Predis_Commands_SetCardinality',
+ 'sismember' => 'Predis_Commands_SetIsMember',
+ 'sinter' => 'Predis_Commands_SetIntersection',
+ 'sinterstore' => 'Predis_Commands_SetIntersectionStore',
+ 'sunion' => 'Predis_Commands_SetUnion',
+ 'sunionstore' => 'Predis_Commands_SetUnionStore',
+ 'sdiff' => 'Predis_Commands_SetDifference',
+ 'sdiffstore' => 'Predis_Commands_SetDifferenceStore',
+ 'smembers' => 'Predis_Commands_SetMembers',
+ 'srandmember' => 'Predis_Commands_SetRandomMember',
+
+ /* commands operating on sorted sets */
+ 'zadd' => 'Predis_Commands_ZSetAdd',
+ 'zincrby' => 'Predis_Commands_ZSetIncrementBy',
+ 'zrem' => 'Predis_Commands_ZSetRemove',
+ 'zrange' => 'Predis_Commands_ZSetRange',
+ 'zrevrange' => 'Predis_Commands_ZSetReverseRange',
+ 'zrangebyscore' => 'Predis_Commands_ZSetRangeByScore',
+ 'zcard' => 'Predis_Commands_ZSetCardinality',
+ 'zscore' => 'Predis_Commands_ZSetScore',
+ 'zremrangebyscore' => 'Predis_Commands_ZSetRemoveRangeByScore',
+
+ /* multiple databases handling commands */
+ 'select' => 'Predis_Commands_SelectDatabase',
+ 'move' => 'Predis_Commands_MoveKey',
+ 'flushdb' => 'Predis_Commands_FlushDatabase',
+ 'flushall' => 'Predis_Commands_FlushAll',
+
+ /* sorting */
+ 'sort' => 'Predis_Commands_Sort',
+
+ /* remote server control commands */
+ 'info' => 'Predis_Commands_Info',
+ 'slaveof' => 'Predis_Commands_SlaveOf',
+
+ /* persistence control commands */
+ 'save' => 'Predis_Commands_Save',
+ 'bgsave' => 'Predis_Commands_BackgroundSave',
+ 'lastsave' => 'Predis_Commands_LastSave',
+ 'shutdown' => 'Predis_Commands_Shutdown',
+ 'bgrewriteaof' => 'Predis_Commands_BackgroundRewriteAppendOnlyFile',
+
+
+ /* ---------------- Redis 2.0 ---------------- */
+
+ /* transactions */
+ 'multi' => 'Predis_Commands_Multi',
+ 'exec' => 'Predis_Commands_Exec',
+ 'discard' => 'Predis_Commands_Discard',
+
+ /* commands operating on string values */
+ 'setex' => 'Predis_Commands_SetExpire',
+ 'append' => 'Predis_Commands_Append',
+ 'substr' => 'Predis_Commands_Substr',
+
+ /* commands operating on lists */
+ 'blpop' => 'Predis_Commands_ListPopFirstBlocking',
+ 'brpop' => 'Predis_Commands_ListPopLastBlocking',
+
+ /* commands operating on sorted sets */
+ 'zunionstore' => 'Predis_Commands_ZSetUnionStore',
+ 'zinterstore' => 'Predis_Commands_ZSetIntersectionStore',
+ 'zcount' => 'Predis_Commands_ZSetCount',
+ 'zrank' => 'Predis_Commands_ZSetRank',
+ 'zrevrank' => 'Predis_Commands_ZSetReverseRank',
+ 'zremrangebyrank' => 'Predis_Commands_ZSetRemoveRangeByRank',
+
+ /* commands operating on hashes */
+ 'hset' => 'Predis_Commands_HashSet',
+ 'hsetnx' => 'Predis_Commands_HashSetPreserve',
+ 'hmset' => 'Predis_Commands_HashSetMultiple',
+ 'hincrby' => 'Predis_Commands_HashIncrementBy',
+ 'hget' => 'Predis_Commands_HashGet',
+ 'hmget' => 'Predis_Commands_HashGetMultiple',
+ 'hdel' => 'Predis_Commands_HashDelete',
+ 'hexists' => 'Predis_Commands_HashExists',
+ 'hlen' => 'Predis_Commands_HashLength',
+ 'hkeys' => 'Predis_Commands_HashKeys',
+ 'hvals' => 'Predis_Commands_HashValues',
+ 'hgetall' => 'Predis_Commands_HashGetAll',
+
+ /* publish - subscribe */
+ 'subscribe' => 'Predis_Commands_Subscribe',
+ 'unsubscribe' => 'Predis_Commands_Unsubscribe',
+ 'psubscribe' => 'Predis_Commands_SubscribeByPattern',
+ 'punsubscribe' => 'Predis_Commands_UnsubscribeByPattern',
+ 'publish' => 'Predis_Commands_Publish',
+
+ /* remote server control commands */
+ 'config' => 'Predis_Commands_Config',
+
+
+ /* ---------------- Redis 2.2 ---------------- */
+
+ /* transactions */
+ 'watch' => 'Predis_Commands_Watch',
+ 'unwatch' => 'Predis_Commands_Unwatch',
+
+ /* commands operating on string values */
+ 'strlen' => 'Predis_Commands_Strlen',
+ 'setrange' => 'Predis_Commands_SetRange',
+ 'getrange' => 'Predis_Commands_Substr',
+ 'setbit' => 'Predis_Commands_SetBit',
+ 'getbit' => 'Predis_Commands_GetBit',
+
+ /* commands operating on the key space */
+ 'persist' => 'Predis_Commands_Persist',
+
+ /* commands operating on lists */
+ 'rpushx' => 'Predis_Commands_ListPushTailX',
+ 'lpushx' => 'Predis_Commands_ListPushHeadX',
+ 'linsert' => 'Predis_Commands_ListInsert',
+ 'brpoplpush' => 'Predis_Commands_ListPopLastPushHeadBlocking',
+
+ /* commands operating on sorted sets */
+ 'zrevrangebyscore' => 'Predis_Commands_ZSetReverseRangeByScore',
+ );
+ }
+}
+
+class Predis_RedisServer_vNext extends Predis_RedisServer_v2_2 {
+ public function getVersion() { return 'DEV'; }
+ public function getSupportedCommands() {
+ return array_merge(parent::getSupportedCommands(), array(
+ /* remote server control commands */
+ 'info' => 'Predis_Commands_Info_v24',
+ ));
+ }
+}
+
+/* ------------------------------------------------------------------------- */
+
+interface Predis_Pipeline_IPipelineExecutor {
+ public function execute(Predis_IConnection $connection, &$commands);
+}
+
+class Predis_Pipeline_StandardExecutor implements Predis_Pipeline_IPipelineExecutor {
+ public function execute(Predis_IConnection $connection, &$commands) {
+ $sizeofPipe = count($commands);
+ $values = array();
+
+ foreach ($commands as $command) {
+ $connection->writeCommand($command);
+ }
+ try {
+ for ($i = 0; $i < $sizeofPipe; $i++) {
+ $response = $connection->readResponse($commands[$i]);
+ $values[] = $response instanceof Iterator
+ ? iterator_to_array($response)
+ : $response;
+ unset($commands[$i]);
+ }
+ }
+ catch (Predis_ServerException $exception) {
+ // force disconnection to prevent protocol desynchronization
+ $connection->disconnect();
+ throw $exception;
+ }
+
+ return $values;
+ }
+}
+
+class Predis_Pipeline_SafeExecutor implements Predis_Pipeline_IPipelineExecutor {
+ public function execute(Predis_IConnection $connection, &$commands) {
+ $sizeofPipe = count($commands);
+ $values = array();
+
+ foreach ($commands as $command) {
+ try {
+ $connection->writeCommand($command);
+ }
+ catch (Predis_CommunicationException $exception) {
+ return array_fill(0, $sizeofPipe, $exception);
+ }
+ }
+
+ for ($i = 0; $i < $sizeofPipe; $i++) {
+ $command = $commands[$i];
+ unset($commands[$i]);
+ try {
+ $response = $connection->readResponse($command);
+ $values[] = ($response instanceof Iterator
+ ? iterator_to_array($response)
+ : $response
+ );
+ }
+ catch (Predis_ServerException $exception) {
+ $values[] = $exception->toResponseError();
+ }
+ catch (Predis_CommunicationException $exception) {
+ $toAdd = count($commands) - count($values);
+ $values = array_merge($values, array_fill(0, $toAdd, $exception));
+ break;
+ }
+ }
+
+ return $values;
+ }
+}
+
+class Predis_Pipeline_SafeClusterExecutor implements Predis_Pipeline_IPipelineExecutor {
+ public function execute(Predis_IConnection $connection, &$commands) {
+ $connectionExceptions = array();
+ $sizeofPipe = count($commands);
+ $values = array();
+
+ foreach ($commands as $command) {
+ $cmdConnection = $connection->getConnection($command);
+ if (isset($connectionExceptions[spl_object_hash($cmdConnection)])) {
+ continue;
+ }
+ try {
+ $cmdConnection->writeCommand($command);
+ }
+ catch (Predis_CommunicationException $exception) {
+ $connectionExceptions[spl_object_hash($cmdConnection)] = $exception;
+ }
+ }
+
+ for ($i = 0; $i < $sizeofPipe; $i++) {
+ $command = $commands[$i];
+ unset($commands[$i]);
+
+ $cmdConnection = $connection->getConnection($command);
+ $connectionObjectHash = spl_object_hash($cmdConnection);
+
+ if (isset($connectionExceptions[$connectionObjectHash])) {
+ $values[] = $connectionExceptions[$connectionObjectHash];
+ continue;
+ }
+
+ try {
+ $response = $cmdConnection->readResponse($command);
+ $values[] = ($response instanceof Iterator
+ ? iterator_to_array($response)
+ : $response
+ );
+ }
+ catch (Predis_ServerException $exception) {
+ $values[] = $exception->toResponseError();
+ }
+ catch (Predis_CommunicationException $exception) {
+ $values[] = $exception;
+ $connectionExceptions[$connectionObjectHash] = $exception;
+ }
+ }
+
+ return $values;
+ }
+}
+
+/* ------------------------------------------------------------------------- */
+
+interface Predis_Distribution_IDistributionStrategy {
+ public function add($node, $weight = null);
+ public function remove($node);
+ public function get($key);
+ public function generateKey($value);
+}
+
+class Predis_Distribution_EmptyRingException extends Exception { }
+
+class Predis_Distribution_HashRing implements Predis_Distribution_IDistributionStrategy {
+ const DEFAULT_REPLICAS = 128;
+ const DEFAULT_WEIGHT = 100;
+ private $_nodes, $_ring, $_ringKeys, $_ringKeysCount, $_replicas;
+
+ public function __construct($replicas = self::DEFAULT_REPLICAS) {
+ $this->_replicas = $replicas;
+ $this->_nodes = array();
+ }
+
+ public function add($node, $weight = null) {
+ // NOTE: in case of collisions in the hashes of the nodes, the node added
+ // last wins, thus the order in which nodes are added is significant.
+ // TODO: self::DEFAULT_WEIGHT does not work for inherited classes that
+ // override the DEFAULT_WEIGHT constant.
+ $this->_nodes[] = array(
+ 'object' => $node,
+ 'weight' => (int) ($weight !== null ? $weight : self::DEFAULT_WEIGHT),
+ );
+ $this->reset();
+ }
+
+ public function remove($node) {
+ // NOTE: a node is removed by resetting the ring so that it's recreated from
+ // scratch, in order to reassign possible hashes with collisions to the
+ // right node according to the order in which they were added in the
+ // first place.
+ for ($i = 0; $i < count($this->_nodes); ++$i) {
+ if ($this->_nodes[$i]['object'] === $node) {
+ array_splice($this->_nodes, $i, 1);
+ $this->reset();
+ break;
+ }
+ }
+ }
+
+ private function reset() {
+ unset($this->_ring);
+ unset($this->_ringKeys);
+ unset($this->_ringKeysCount);
+ }
+
+ private function isInitialized() {
+ return isset($this->_ringKeys);
+ }
+
+ private function computeTotalWeight() {
+ $totalWeight = 0;
+ foreach ($this->_nodes as $node) {
+ $totalWeight += $node['weight'];
+ }
+ return $totalWeight;
+ }
+
+ private function initialize() {
+ if ($this->isInitialized()) {
+ return;
+ }
+ if (count($this->_nodes) === 0) {
+ throw new Predis_Distribution_EmptyRingException('Cannot initialize empty hashring');
+ }
+
+ $this->_ring = array();
+ $totalWeight = $this->computeTotalWeight();
+ $nodesCount = count($this->_nodes);
+ foreach ($this->_nodes as $node) {
+ $weightRatio = $node['weight'] / $totalWeight;
+ $this->addNodeToRing($this->_ring, $node, $nodesCount, $this->_replicas, $weightRatio);
+ }
+ ksort($this->_ring, SORT_NUMERIC);
+ $this->_ringKeys = array_keys($this->_ring);
+ $this->_ringKeysCount = count($this->_ringKeys);
+ }
+
+ protected function addNodeToRing(&$ring, $node, $totalNodes, $replicas, $weightRatio) {
+ $nodeObject = $node['object'];
+ $nodeHash = (string) $nodeObject;
+ $replicas = (int) round($weightRatio * $totalNodes * $replicas);
+ for ($i = 0; $i < $replicas; $i++) {
+ $key = crc32("$nodeHash:$i");
+ $ring[$key] = $nodeObject;
+ }
+ }
+
+ public function generateKey($value) {
+ return crc32($value);
+ }
+
+ public function get($key) {
+ return $this->_ring[$this->getNodeKey($key)];
+ }
+
+ private function getNodeKey($key) {
+ $this->initialize();
+ $ringKeys = $this->_ringKeys;
+ $upper = $this->_ringKeysCount - 1;
+ $lower = 0;
+
+ while ($lower <= $upper) {
+ $index = ($lower + $upper) >> 1;
+ $item = $ringKeys[$index];
+ if ($item > $key) {
+ $upper = $index - 1;
+ }
+ else if ($item < $key) {
+ $lower = $index + 1;
+ }
+ else {
+ return $item;
+ }
+ }
+ return $ringKeys[$this->wrapAroundStrategy($upper, $lower, $this->_ringKeysCount)];
+ }
+
+ protected function wrapAroundStrategy($upper, $lower, $ringKeysCount) {
+ // NOTE: binary search for the last item in _ringkeys with a value
+ // less or equal to the key. If no such item exists, return the
+ // last item.
+ return $upper >= 0 ? $upper : $ringKeysCount - 1;
+ }
+}
+
+class Predis_Distribution_KetamaPureRing extends Predis_Distribution_HashRing {
+ const DEFAULT_REPLICAS = 160;
+
+ public function __construct() {
+ parent::__construct(self::DEFAULT_REPLICAS);
+ }
+
+ protected function addNodeToRing(&$ring, $node, $totalNodes, $replicas, $weightRatio) {
+ $nodeObject = $node['object'];
+ $nodeHash = (string) $nodeObject;
+ $replicas = (int) floor($weightRatio * $totalNodes * ($replicas / 4));
+ for ($i = 0; $i < $replicas; $i++) {
+ $unpackedDigest = unpack('V4', md5("$nodeHash-$i", true));
+ foreach ($unpackedDigest as $key) {
+ $ring[$key] = $nodeObject;
+ }
+ }
+ }
+
+ public function generateKey($value) {
+ $hash = unpack('V', md5($value, true));
+ return $hash[1];
+ }
+
+ protected function wrapAroundStrategy($upper, $lower, $ringKeysCount) {
+ // NOTE: binary search for the first item in _ringkeys with a value
+ // greater or equal to the key. If no such item exists, return the
+ // first item.
+ return $lower < $ringKeysCount ? $lower : 0;
+ }
+}
+
+/* ------------------------------------------------------------------------- */
+
+class Predis_Shared_Utils {
+ public static function isCluster(Predis_IConnection $connection) {
+ return $connection instanceof Predis_ConnectionCluster;
+ }
+
+ public static function onCommunicationException(Predis_CommunicationException $exception) {
+ if ($exception->shouldResetConnection()) {
+ $connection = $exception->getConnection();
+ if ($connection->isConnected()) {
+ $connection->disconnect();
+ }
+ }
+ throw $exception;
+ }
+
+ public static function filterArrayArguments(Array $arguments) {
+ if (count($arguments) === 1 && is_array($arguments[0])) {
+ return $arguments[0];
+ }
+ return $arguments;
+ }
+}
+
+abstract class Predis_Shared_MultiBulkResponseIteratorBase implements Iterator, Countable {
+ protected $_position, $_current, $_replySize;
+
+ public function rewind() {
+ // NOOP
+ }
+
+ public function current() {
+ return $this->_current;
+ }
+
+ public function key() {
+ return $this->_position;
+ }
+
+ public function next() {
+ if (++$this->_position < $this->_replySize) {
+ $this->_current = $this->getValue();
+ }
+ return $this->_position;
+ }
+
+ public function valid() {
+ return $this->_position < $this->_replySize;
+ }
+
+ public function count() {
+ // NOTE: use count if you want to get the size of the current multi-bulk
+ // response without using iterator_count (which actually consumes
+ // our iterator to calculate the size, and we cannot perform a rewind)
+ return $this->_replySize;
+ }
+
+ protected abstract function getValue();
+}
+
+class Predis_Shared_MultiBulkResponseIterator extends Predis_Shared_MultiBulkResponseIteratorBase {
+ private $_connection;
+
+ public function __construct(Predis_Connection $connection, $size) {
+ $this->_connection = $connection;
+ $this->_reader = $connection->getResponseReader();
+ $this->_position = 0;
+ $this->_current = $size > 0 ? $this->getValue() : null;
+ $this->_replySize = $size;
+ }
+
+ public function __destruct() {
+ // when the iterator is garbage-collected (e.g. it goes out of the
+ // scope of a foreach) but it has not reached its end, we must sync
+ // the client with the queued elements that have not been read from
+ // the connection with the server.
+ $this->sync();
+ }
+
+ public function sync($drop = false) {
+ if ($drop == true) {
+ if ($this->valid()) {
+ $this->_position = $this->_replySize;
+ $this->_connection->disconnect();
+ }
+ }
+ else {
+ while ($this->valid()) {
+ $this->next();
+ }
+ }
+ }
+
+ protected function getValue() {
+ return $this->_reader->read($this->_connection);
+ }
+}
+
+class Predis_Shared_MultiBulkResponseKVIterator extends Predis_Shared_MultiBulkResponseIteratorBase {
+ private $_iterator;
+
+ public function __construct(Predis_Shared_MultiBulkResponseIterator $iterator) {
+ $virtualSize = count($iterator) / 2;
+
+ $this->_iterator = $iterator;
+ $this->_position = 0;
+ $this->_current = $virtualSize > 0 ? $this->getValue() : null;
+ $this->_replySize = $virtualSize;
+ }
+
+ public function __destruct() {
+ $this->_iterator->sync();
+ }
+
+ protected function getValue() {
+ $k = $this->_iterator->current();
+ $this->_iterator->next();
+ $v = $this->_iterator->current();
+ $this->_iterator->next();
+ return array($k, $v);
+ }
+}
+
+/* ------------------------------------------------------------------------- */
+
+/* miscellaneous commands */
+class Predis_Commands_Ping extends Predis_MultiBulkCommand {
+ public function canBeHashed() { return false; }
+ public function getCommandId() { return 'PING'; }
+ public function parseResponse($data) {
+ return $data === 'PONG';
+ }
+}
+
+class Predis_Commands_DoEcho extends Predis_MultiBulkCommand {
+ public function canBeHashed() { return false; }
+ public function getCommandId() { return 'ECHO'; }
+}
+
+class Predis_Commands_Auth extends Predis_MultiBulkCommand {
+ public function canBeHashed() { return false; }
+ public function getCommandId() { return 'AUTH'; }
+}
+
+/* connection handling */
+class Predis_Commands_Quit extends Predis_MultiBulkCommand {
+ public function canBeHashed() { return false; }
+ public function getCommandId() { return 'QUIT'; }
+ public function closesConnection() { return true; }
+}
+
+/* commands operating on string values */
+class Predis_Commands_Set extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'SET'; }
+}
+
+class Predis_Commands_SetExpire extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'SETEX'; }
+}
+
+class Predis_Commands_SetPreserve extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'SETNX'; }
+ public function parseResponse($data) { return (bool) $data; }
+}
+
+class Predis_Commands_SetMultiple extends Predis_MultiBulkCommand {
+ public function canBeHashed() { return false; }
+ public function getCommandId() { return 'MSET'; }
+ public function filterArguments(Array $arguments) {
+ if (count($arguments) === 1 && is_array($arguments[0])) {
+ $flattenedKVs = array();
+ $args = &$arguments[0];
+ foreach ($args as $k => $v) {
+ $flattenedKVs[] = $k;
+ $flattenedKVs[] = $v;
+ }
+ return $flattenedKVs;
+ }
+ return $arguments;
+ }
+}
+
+class Predis_Commands_SetMultiplePreserve extends Predis_Commands_SetMultiple {
+ public function canBeHashed() { return false; }
+ public function getCommandId() { return 'MSETNX'; }
+ public function parseResponse($data) { return (bool) $data; }
+}
+
+class Predis_Commands_Get extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'GET'; }
+}
+
+class Predis_Commands_GetMultiple extends Predis_MultiBulkCommand {
+ public function canBeHashed() { return false; }
+ public function getCommandId() { return 'MGET'; }
+ public function filterArguments(Array $arguments) {
+ return Predis_Shared_Utils::filterArrayArguments($arguments);
+ }
+}
+
+class Predis_Commands_GetSet extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'GETSET'; }
+}
+
+class Predis_Commands_Increment extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'INCR'; }
+}
+
+class Predis_Commands_IncrementBy extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'INCRBY'; }
+}
+
+class Predis_Commands_Decrement extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'DECR'; }
+}
+
+class Predis_Commands_DecrementBy extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'DECRBY'; }
+}
+
+class Predis_Commands_Exists extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'EXISTS'; }
+ public function parseResponse($data) { return (bool) $data; }
+}
+
+class Predis_Commands_Delete extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'DEL'; }
+}
+
+class Predis_Commands_Type extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'TYPE'; }
+}
+
+class Predis_Commands_Append extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'APPEND'; }
+}
+
+class Predis_Commands_SetRange extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'SETRANGE'; }
+}
+
+class Predis_Commands_Substr extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'SUBSTR'; }
+}
+
+class Predis_Commands_SetBit extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'SETBIT'; }
+}
+
+class Predis_Commands_GetBit extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'GETBIT'; }
+}
+
+class Predis_Commands_Strlen extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'STRLEN'; }
+}
+
+/* commands operating on the key space */
+class Predis_Commands_Keys extends Predis_MultiBulkCommand {
+ public function canBeHashed() { return false; }
+ public function getCommandId() { return 'KEYS'; }
+}
+
+class Predis_Commands_Keys_v1_2 extends Predis_Commands_Keys {
+ public function parseResponse($data) {
+ return explode(' ', $data);
+ }
+}
+
+class Predis_Commands_RandomKey extends Predis_MultiBulkCommand {
+ public function canBeHashed() { return false; }
+ public function getCommandId() { return 'RANDOMKEY'; }
+ public function parseResponse($data) { return $data !== '' ? $data : null; }
+}
+
+class Predis_Commands_Rename extends Predis_MultiBulkCommand {
+ public function canBeHashed() { return false; }
+ public function getCommandId() { return 'RENAME'; }
+}
+
+class Predis_Commands_RenamePreserve extends Predis_MultiBulkCommand {
+ public function canBeHashed() { return false; }
+ public function getCommandId() { return 'RENAMENX'; }
+ public function parseResponse($data) { return (bool) $data; }
+}
+
+class Predis_Commands_Expire extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'EXPIRE'; }
+ public function parseResponse($data) { return (bool) $data; }
+}
+
+class Predis_Commands_ExpireAt extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'EXPIREAT'; }
+ public function parseResponse($data) { return (bool) $data; }
+}
+
+class Predis_Commands_Persist extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'PERSIST'; }
+ public function parseResponse($data) { return (bool) $data; }
+}
+
+class Predis_Commands_DatabaseSize extends Predis_MultiBulkCommand {
+ public function canBeHashed() { return false; }
+ public function getCommandId() { return 'DBSIZE'; }
+}
+
+class Predis_Commands_TimeToLive extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'TTL'; }
+}
+
+/* commands operating on lists */
+class Predis_Commands_ListPushTail extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'RPUSH'; }
+}
+
+class Predis_Commands_ListPushTailX extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'RPUSHX'; }
+}
+
+class Predis_Commands_ListPushHead extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'LPUSH'; }
+}
+
+class Predis_Commands_ListPushHeadX extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'LPUSHX'; }
+}
+
+class Predis_Commands_ListLength extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'LLEN'; }
+}
+
+class Predis_Commands_ListRange extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'LRANGE'; }
+}
+
+class Predis_Commands_ListTrim extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'LTRIM'; }
+}
+
+class Predis_Commands_ListIndex extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'LINDEX'; }
+}
+
+class Predis_Commands_ListSet extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'LSET'; }
+}
+
+class Predis_Commands_ListRemove extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'LREM'; }
+}
+
+class Predis_Commands_ListPopLastPushHead extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'RPOPLPUSH'; }
+}
+
+class Predis_Commands_ListPopLastPushHeadBlocking extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'BRPOPLPUSH'; }
+}
+
+class Predis_Commands_ListPopFirst extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'LPOP'; }
+}
+
+class Predis_Commands_ListPopLast extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'RPOP'; }
+}
+
+class Predis_Commands_ListPopFirstBlocking extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'BLPOP'; }
+}
+
+class Predis_Commands_ListPopLastBlocking extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'BRPOP'; }
+}
+
+class Predis_Commands_ListInsert extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'LINSERT'; }
+}
+
+/* commands operating on sets */
+class Predis_Commands_SetAdd extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'SADD'; }
+ public function parseResponse($data) { return (bool) $data; }
+}
+
+class Predis_Commands_SetRemove extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'SREM'; }
+ public function parseResponse($data) { return (bool) $data; }
+}
+
+class Predis_Commands_SetPop extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'SPOP'; }
+}
+
+class Predis_Commands_SetMove extends Predis_MultiBulkCommand {
+ public function canBeHashed() { return false; }
+ public function getCommandId() { return 'SMOVE'; }
+ public function parseResponse($data) { return (bool) $data; }
+}
+
+class Predis_Commands_SetCardinality extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'SCARD'; }
+}
+
+class Predis_Commands_SetIsMember extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'SISMEMBER'; }
+ public function parseResponse($data) { return (bool) $data; }
+}
+
+class Predis_Commands_SetIntersection extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'SINTER'; }
+ public function filterArguments(Array $arguments) {
+ return Predis_Shared_Utils::filterArrayArguments($arguments);
+ }
+}
+
+class Predis_Commands_SetIntersectionStore extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'SINTERSTORE'; }
+ public function filterArguments(Array $arguments) {
+ if (count($arguments) === 2 && is_array($arguments[1])) {
+ return array_merge(array($arguments[0]), $arguments[1]);
+ }
+ return $arguments;
+ }
+}
+
+class Predis_Commands_SetUnion extends Predis_Commands_SetIntersection {
+ public function getCommandId() { return 'SUNION'; }
+}
+
+class Predis_Commands_SetUnionStore extends Predis_Commands_SetIntersectionStore {
+ public function getCommandId() { return 'SUNIONSTORE'; }
+}
+
+class Predis_Commands_SetDifference extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'SDIFF'; }
+}
+
+class Predis_Commands_SetDifferenceStore extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'SDIFFSTORE'; }
+}
+
+class Predis_Commands_SetMembers extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'SMEMBERS'; }
+}
+
+class Predis_Commands_SetRandomMember extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'SRANDMEMBER'; }
+}
+
+/* commands operating on sorted sets */
+class Predis_Commands_ZSetAdd extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'ZADD'; }
+ public function parseResponse($data) { return (bool) $data; }
+}
+
+class Predis_Commands_ZSetIncrementBy extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'ZINCRBY'; }
+}
+
+class Predis_Commands_ZSetRemove extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'ZREM'; }
+ public function parseResponse($data) { return (bool) $data; }
+}
+
+class Predis_Commands_ZSetUnionStore extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'ZUNIONSTORE'; }
+ public function filterArguments(Array $arguments) {
+ $options = array();
+ $argc = count($arguments);
+ if ($argc > 2 && is_array($arguments[$argc - 1])) {
+ $options = $this->prepareOptions(array_pop($arguments));
+ }
+ if (is_array($arguments[1])) {
+ $arguments = array_merge(
+ array($arguments[0], count($arguments[1])),
+ $arguments[1]
+ );
+ }
+ return array_merge($arguments, $options);
+ }
+ private function prepareOptions($options) {
+ $opts = array_change_key_case($options, CASE_UPPER);
+ $finalizedOpts = array();
+ if (isset($opts['WEIGHTS']) && is_array($opts['WEIGHTS'])) {
+ $finalizedOpts[] = 'WEIGHTS';
+ foreach ($opts['WEIGHTS'] as $weight) {
+ $finalizedOpts[] = $weight;
+ }
+ }
+ if (isset($opts['AGGREGATE'])) {
+ $finalizedOpts[] = 'AGGREGATE';
+ $finalizedOpts[] = $opts['AGGREGATE'];
+ }
+ return $finalizedOpts;
+ }
+}
+
+class Predis_Commands_ZSetIntersectionStore extends Predis_Commands_ZSetUnionStore {
+ public function getCommandId() { return 'ZINTERSTORE'; }
+}
+
+class Predis_Commands_ZSetRange extends Predis_MultiBulkCommand {
+ private $_withScores = false;
+ public function getCommandId() { return 'ZRANGE'; }
+ public function filterArguments(Array $arguments) {
+ if (count($arguments) === 4) {
+ $lastType = gettype($arguments[3]);
+ if ($lastType === 'string' && strtolower($arguments[3]) === 'withscores') {
+ // used for compatibility with older versions
+ $arguments[3] = array('WITHSCORES' => true);
+ $lastType = 'array';
+ }
+ if ($lastType === 'array') {
+ $options = $this->prepareOptions(array_pop($arguments));
+ return array_merge($arguments, $options);
+ }
+ }
+ return $arguments;
+ }
+ protected function prepareOptions($options) {
+ $opts = array_change_key_case($options, CASE_UPPER);
+ $finalizedOpts = array();
+ if (isset($opts['WITHSCORES'])) {
+ $finalizedOpts[] = 'WITHSCORES';
+ $this->_withScores = true;
+ }
+ return $finalizedOpts;
+ }
+ public function parseResponse($data) {
+ if ($this->_withScores) {
+ if ($data instanceof Iterator) {
+ return new Predis_Shared_MultiBulkResponseKVIterator($data);
+ }
+ $result = array();
+ for ($i = 0; $i < count($data); $i++) {
+ $result[] = array($data[$i], $data[++$i]);
+ }
+ return $result;
+ }
+ return $data;
+ }
+}
+
+class Predis_Commands_ZSetReverseRange extends Predis_Commands_ZSetRange {
+ public function getCommandId() { return 'ZREVRANGE'; }
+}
+
+class Predis_Commands_ZSetRangeByScore extends Predis_Commands_ZSetRange {
+ public function getCommandId() { return 'ZRANGEBYSCORE'; }
+ protected function prepareOptions($options) {
+ $opts = array_change_key_case($options, CASE_UPPER);
+ $finalizedOpts = array();
+ if (isset($opts['LIMIT']) && is_array($opts['LIMIT'])) {
+ $limit = array_change_key_case($opts['LIMIT'], CASE_UPPER);
+ $finalizedOpts[] = 'LIMIT';
+ $finalizedOpts[] = isset($limit['OFFSET']) ? $limit['OFFSET'] : $limit[0];
+ $finalizedOpts[] = isset($limit['COUNT']) ? $limit['COUNT'] : $limit[1];
+ }
+ return array_merge($finalizedOpts, parent::prepareOptions($options));
+ }
+}
+
+class Predis_Commands_ZSetReverseRangeByScore extends Predis_Commands_ZSetRangeByScore {
+ public function getCommandId() { return 'ZREVRANGEBYSCORE'; }
+}
+
+class Predis_Commands_ZSetCount extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'ZCOUNT'; }
+}
+
+class Predis_Commands_ZSetCardinality extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'ZCARD'; }
+}
+
+class Predis_Commands_ZSetScore extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'ZSCORE'; }
+}
+
+class Predis_Commands_ZSetRemoveRangeByScore extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'ZREMRANGEBYSCORE'; }
+}
+
+class Predis_Commands_ZSetRank extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'ZRANK'; }
+}
+
+class Predis_Commands_ZSetReverseRank extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'ZREVRANK'; }
+}
+
+class Predis_Commands_ZSetRemoveRangeByRank extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'ZREMRANGEBYRANK'; }
+}
+
+/* commands operating on hashes */
+class Predis_Commands_HashSet extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'HSET'; }
+ public function parseResponse($data) { return (bool) $data; }
+}
+
+class Predis_Commands_HashSetPreserve extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'HSETNX'; }
+ public function parseResponse($data) { return (bool) $data; }
+}
+
+class Predis_Commands_HashSetMultiple extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'HMSET'; }
+ public function filterArguments(Array $arguments) {
+ if (count($arguments) === 2 && is_array($arguments[1])) {
+ $flattenedKVs = array($arguments[0]);
+ $args = &$arguments[1];
+ foreach ($args as $k => $v) {
+ $flattenedKVs[] = $k;
+ $flattenedKVs[] = $v;
+ }
+ return $flattenedKVs;
+ }
+ return $arguments;
+ }
+}
+
+class Predis_Commands_HashIncrementBy extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'HINCRBY'; }
+}
+
+class Predis_Commands_HashGet extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'HGET'; }
+}
+
+class Predis_Commands_HashGetMultiple extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'HMGET'; }
+ public function filterArguments(Array $arguments) {
+ if (count($arguments) === 2 && is_array($arguments[1])) {
+ $flattenedKVs = array($arguments[0]);
+ $args = &$arguments[1];
+ foreach ($args as $v) {
+ $flattenedKVs[] = $v;
+ }
+ return $flattenedKVs;
+ }
+ return $arguments;
+ }
+}
+
+class Predis_Commands_HashDelete extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'HDEL'; }
+ public function parseResponse($data) { return (bool) $data; }
+}
+
+class Predis_Commands_HashExists extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'HEXISTS'; }
+ public function parseResponse($data) { return (bool) $data; }
+}
+
+class Predis_Commands_HashLength extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'HLEN'; }
+}
+
+class Predis_Commands_HashKeys extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'HKEYS'; }
+}
+
+class Predis_Commands_HashValues extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'HVALS'; }
+}
+
+class Predis_Commands_HashGetAll extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'HGETALL'; }
+ public function parseResponse($data) {
+ if ($data instanceof Iterator) {
+ return new Predis_Shared_MultiBulkResponseKVIterator($data);
+ }
+ $result = array();
+ for ($i = 0; $i < count($data); $i++) {
+ $result[$data[$i]] = $data[++$i];
+ }
+ return $result;
+ }
+}
+
+/* multiple databases handling commands */
+class Predis_Commands_SelectDatabase extends Predis_MultiBulkCommand {
+ public function canBeHashed() { return false; }
+ public function getCommandId() { return 'SELECT'; }
+}
+
+class Predis_Commands_MoveKey extends Predis_MultiBulkCommand {
+ public function canBeHashed() { return false; }
+ public function getCommandId() { return 'MOVE'; }
+ public function parseResponse($data) { return (bool) $data; }
+}
+
+class Predis_Commands_FlushDatabase extends Predis_MultiBulkCommand {
+ public function canBeHashed() { return false; }
+ public function getCommandId() { return 'FLUSHDB'; }
+}
+
+class Predis_Commands_FlushAll extends Predis_MultiBulkCommand {
+ public function canBeHashed() { return false; }
+ public function getCommandId() { return 'FLUSHALL'; }
+}
+
+/* sorting */
+class Predis_Commands_Sort extends Predis_MultiBulkCommand {
+ public function getCommandId() { return 'SORT'; }
+ public function filterArguments(Array $arguments) {
+ if (count($arguments) === 1) {
+ return $arguments;
+ }
+
+ $query = array($arguments[0]);
+ $sortParams = array_change_key_case($arguments[1], CASE_UPPER);
+
+ if (isset($sortParams['BY'])) {
+ $query[] = 'BY';
+ $query[] = $sortParams['BY'];
+ }
+ if (isset($sortParams['GET'])) {
+ $getargs = $sortParams['GET'];
+ if (is_array($getargs)) {
+ foreach ($getargs as $getarg) {
+ $query[] = 'GET';
+ $query[] = $getarg;
+ }
+ }
+ else {
+ $query[] = 'GET';
+ $query[] = $getargs;
+ }
+ }
+ if (isset($sortParams['LIMIT']) && is_array($sortParams['LIMIT'])
+ && count($sortParams['LIMIT']) == 2) {
+
+ $query[] = 'LIMIT';
+ $query[] = $sortParams['LIMIT'][0];
+ $query[] = $sortParams['LIMIT'][1];
+ }
+ if (isset($sortParams['SORT'])) {
+ $query[] = strtoupper($sortParams['SORT']);
+ }
+ if (isset($sortParams['ALPHA']) && $sortParams['ALPHA'] == true) {
+ $query[] = 'ALPHA';
+ }
+ if (isset($sortParams['STORE'])) {
+ $query[] = 'STORE';
+ $query[] = $sortParams['STORE'];
+ }
+
+ return $query;
+ }
+}
+
+/* transactions */
+class Predis_Commands_Multi extends Predis_MultiBulkCommand {
+ public function canBeHashed() { return false; }
+ public function getCommandId() { return 'MULTI'; }
+}
+
+class Predis_Commands_Exec extends Predis_MultiBulkCommand {
+ public function canBeHashed() { return false; }
+ public function getCommandId() { return 'EXEC'; }
+}
+
+class Predis_Commands_Discard extends Predis_MultiBulkCommand {
+ public function canBeHashed() { return false; }
+ public function getCommandId() { return 'DISCARD'; }
+}
+
+/* publish/subscribe */
+class Predis_Commands_Subscribe extends Predis_MultiBulkCommand {
+ public function canBeHashed() { return false; }
+ public function getCommandId() { return 'SUBSCRIBE'; }
+ public function filterArguments(Array $arguments) {
+ return Predis_Shared_Utils::filterArrayArguments($arguments);
+ }
+}
+
+class Predis_Commands_Unsubscribe extends Predis_MultiBulkCommand {
+ public function canBeHashed() { return false; }
+ public function getCommandId() { return 'UNSUBSCRIBE'; }
+}
+
+class Predis_Commands_SubscribeByPattern extends Predis_MultiBulkCommand {
+ public function canBeHashed() { return false; }
+ public function getCommandId() { return 'UNSUBSCRIBE'; }
+ public function filterArguments(Array $arguments) {
+ return Predis_Shared_Utils::filterArrayArguments($arguments);
+ }
+}
+
+class Predis_Commands_UnsubscribeByPattern extends Predis_MultiBulkCommand {
+ public function canBeHashed() { return false; }
+ public function getCommandId() { return 'PUNSUBSCRIBE'; }
+}
+
+class Predis_Commands_Publish extends Predis_MultiBulkCommand {
+ public function canBeHashed() { return false; }
+ public function getCommandId() { return 'PUBLISH'; }
+}
+
+class Predis_Commands_Watch extends Predis_MultiBulkCommand {
+ public function canBeHashed() { return false; }
+ public function getCommandId() { return 'WATCH'; }
+ public function filterArguments(Array $arguments) {
+ if (isset($arguments[0]) && is_array($arguments[0])) {
+ return $arguments[0];
+ }
+ return $arguments;
+ }
+ public function parseResponse($data) { return (bool) $data; }
+}
+
+class Predis_Commands_Unwatch extends Predis_MultiBulkCommand {
+ public function canBeHashed() { return false; }
+ public function getCommandId() { return 'UNWATCH'; }
+ public function parseResponse($data) { return (bool) $data; }
+}
+
+/* persistence control commands */
+class Predis_Commands_Save extends Predis_MultiBulkCommand {
+ public function canBeHashed() { return false; }
+ public function getCommandId() { return 'SAVE'; }
+}
+
+class Predis_Commands_BackgroundSave extends Predis_MultiBulkCommand {
+ public function canBeHashed() { return false; }
+ public function getCommandId() { return 'BGSAVE'; }
+ public function parseResponse($data) {
+ if ($data == 'Background saving started') {
+ return true;
+ }
+ return $data;
+ }
+}
+
+class Predis_Commands_BackgroundRewriteAppendOnlyFile extends Predis_MultiBulkCommand {
+ public function canBeHashed() { return false; }
+ public function getCommandId() { return 'BGREWRITEAOF'; }
+ public function parseResponse($data) {
+ return $data == 'Background append only file rewriting started';
+ }
+}
+
+class Predis_Commands_LastSave extends Predis_MultiBulkCommand {
+ public function canBeHashed() { return false; }
+ public function getCommandId() { return 'LASTSAVE'; }
+}
+
+class Predis_Commands_Shutdown extends Predis_MultiBulkCommand {
+ public function canBeHashed() { return false; }
+ public function getCommandId() { return 'SHUTDOWN'; }
+ public function closesConnection() { return true; }
+}
+
+/* remote server control commands */
+class Predis_Commands_Info extends Predis_MultiBulkCommand {
+ public function canBeHashed() { return false; }
+ public function getCommandId() { return 'INFO'; }
+ public function parseResponse($data) {
+ $info = array();
+ $infoLines = explode("\r\n", $data, -1);
+ foreach ($infoLines as $row) {
+ @list($k, $v) = explode(':', $row);
+ if ($row === '' || !isset($v)) {
+ continue;
+ }
+ if (!preg_match('/^db\d+$/', $k)) {
+ if ($k === 'allocation_stats') {
+ $info[$k] = $this->parseAllocationStats($v);
+ continue;
+ }
+ $info[$k] = $v;
+ }
+ else {
+ $info[$k] = $this->parseDatabaseStats($v);
+ }
+ }
+ return $info;
+ }
+ protected function parseDatabaseStats($str) {
+ $db = array();
+ foreach (explode(',', $str) as $dbvar) {
+ list($dbvk, $dbvv) = explode('=', $dbvar);
+ $db[trim($dbvk)] = $dbvv;
+ }
+ return $db;
+ }
+ protected function parseAllocationStats($str) {
+ $stats = array();
+ foreach (explode(',', $str) as $kv) {
+ @list($size, $objects, $extra) = explode('=', $kv);
+ // hack to prevent incorrect values when parsing the >=256 key
+ if (isset($extra)) {
+ $size = ">=$objects";
+ $objects = $extra;
+ }
+ $stats[$size] = $objects;
+ }
+ return $stats;
+ }
+}
+
+class Predis_Commands_Info_v24 extends Predis_Commands_Info {
+ public function parseResponse($data) {
+ $info = array();
+ $current = null;
+ $infoLines = explode("\r\n", $data, -1);
+ foreach ($infoLines as $row) {
+ if ($row === '') {
+ continue;
+ }
+ if (preg_match('/^# (\w+)$/', $row, $matches)) {
+ $info[$matches[1]] = array();
+ $current = &$info[$matches[1]];
+ continue;
+ }
+ list($k, $v) = explode(':', $row);
+ if (!preg_match('/^db\d+$/', $k)) {
+ if ($k === 'allocation_stats') {
+ $current[$k] = $this->parseAllocationStats($v);
+ continue;
+ }
+ $current[$k] = $v;
+ }
+ else {
+ $current[$k] = $this->parseDatabaseStats($v);
+ }
+ }
+ return $info;
+ }
+}
+
+class Predis_Commands_SlaveOf extends Predis_MultiBulkCommand {
+ public function canBeHashed() { return false; }
+ public function getCommandId() { return 'SLAVEOF'; }
+ public function filterArguments(Array $arguments) {
+ if (count($arguments) === 0 || $arguments[0] === 'NO ONE') {
+ return array('NO', 'ONE');
+ }
+ return $arguments;
+ }
+}
+
+class Predis_Commands_Config extends Predis_MultiBulkCommand {
+ public function canBeHashed() { return false; }
+ public function getCommandId() { return 'CONFIG'; }
+}
+?>
\ No newline at end of file
--
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