X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;ds=sidebyside;f=plugins%2FRealtime%2FRealtime_channel.php;h=1d2ca53912acba22c202352cec45b41b949e3e24;hb=d98a4be24ed6fc6b14ae23931e428cd4db47fe06;hp=6c7b67ca97b731a3e29d740da0c2d9ebbd959f1f;hpb=b3f8ab0beb4ffe088a60cf82c73512f7076603ab;p=quix0rs-gnu-social.git diff --git a/plugins/Realtime/Realtime_channel.php b/plugins/Realtime/Realtime_channel.php index 6c7b67ca97..1d2ca53912 100644 --- a/plugins/Realtime/Realtime_channel.php +++ b/plugins/Realtime/Realtime_channel.php @@ -4,7 +4,7 @@ * Copyright (C) 2011, StatusNet, Inc. * * A channel for real-time browser data - * + * * PHP version 5 * * This program is free software: you can redistribute it and/or modify @@ -34,7 +34,7 @@ if (!defined('STATUSNET')) { /** * A channel for real-time browser data - * + * * For each user currently browsing the site, we want to know which page they're on * so we can send real-time updates to their browser. * @@ -46,19 +46,19 @@ if (!defined('STATUSNET')) { * * @see DB_DataObject */ - class Realtime_channel extends Managed_DataObject { - const TIMEOUT = 1800; // 30 minutes - + const TIMEOUT = 1800; // 30 minutes + public $__table = 'realtime_channel'; // table name - + public $user_id; // int -> user.id, can be null public $action; // string public $arg1; // argument public $arg2; // argument, usually null public $channel_key; // 128-bit shared secret key - public $created; // created date + public $audience; // listener count + public $created; // created date public $modified; // modified date /** @@ -70,7 +70,6 @@ class Realtime_channel extends Managed_DataObject * @param mixed $v Value to lookup * * @return Realtime_channel object found, or null for no hits - * */ function staticGet($k, $v=null) { @@ -83,7 +82,6 @@ class Realtime_channel extends Managed_DataObject * @param array $kv array of key-value mappings * * @return Realtime_channel object found, or null for no hits - * */ function pkeyGet($kv) { @@ -99,30 +97,34 @@ class Realtime_channel extends Managed_DataObject 'description' => 'A channel of realtime notice data', 'fields' => array( 'user_id' => array('type' => 'int', - 'not null' => false, - 'description' => 'user viewing page; can be null'), + 'not null' => false, + 'description' => 'user viewing page; can be null'), 'action' => array('type' => 'varchar', - 'length' => 255, - 'not null' => true, - 'description' => 'page being viewed'), - 'arg1' => array('type' => 'varchar', - 'length' => 255, - 'not null' => false, - 'description' => 'page argument, like username or tag'), - 'arg2' => array('type' => 'varchar', - 'length' => 255, - 'not null' => false, - 'description' => 'second page argument, like tag for showstream'), - 'channel_key' => array('type' => 'varchar', - 'length' => 32, - 'not null' => true, - 'description' => 'shared secret key for this channel'), + 'length' => 255, + 'not null' => true, + 'description' => 'page being viewed'), + 'arg1' => array('type' => 'varchar', + 'length' => 255, + 'not null' => false, + 'description' => 'page argument, like username or tag'), + 'arg2' => array('type' => 'varchar', + 'length' => 255, + 'not null' => false, + 'description' => 'second page argument, like tag for showstream'), + 'channel_key' => array('type' => 'varchar', + 'length' => 32, + 'not null' => true, + 'description' => 'shared secret key for this channel'), + 'audience' => array('type' => 'integer', + 'not null' => true, + 'default' => 0, + 'description' => 'reference count'), 'created' => array('type' => 'datetime', - 'not null' => true, - 'description' => 'date this record was created'), + 'not null' => true, + 'description' => 'date this record was created'), 'modified' => array('type' => 'datetime', - 'not null' => true, - 'description' => 'date this record was modified'), + 'not null' => true, + 'description' => 'date this record was modified'), ), 'primary key' => array('channel_key'), 'unique keys' => array('realtime_channel_user_page_idx' => array('user_id', 'action', 'arg1', 'arg2')), @@ -135,108 +137,136 @@ class Realtime_channel extends Managed_DataObject ), ); } - + static function saveNew($user_id, $action, $arg1, $arg2) { - $channel = new Realtime_channel(); - - $channel->user_id = $user_id; - $channel->action = $action; - $channel->arg1 = $arg1; - $channel->arg2 = $arg2; - - $channel->channel_key = common_good_rand(16); // 128-bit key, 32 hex chars - - $channel->created = common_sql_now(); - $channel->modified = $channel->created; - - $channel->insert(); - - return $channel; + $channel = new Realtime_channel(); + + $channel->user_id = $user_id; + $channel->action = $action; + $channel->arg1 = $arg1; + $channel->arg2 = $arg2; + $channel->audience = 1; + + $channel->channel_key = common_good_rand(16); // 128-bit key, 32 hex chars + + $channel->created = common_sql_now(); + $channel->modified = $channel->created; + + $channel->insert(); + + return $channel; } - + static function getChannel($user_id, $action, $arg1, $arg2) { - $channel = self::fetchChannel($user_id, $action, $arg1, $arg2); - - // Ignore (and delete!) old channels - - if (!empty($channel)) { - $modTime = strtotime($channel->modified); - if ((time() - $modTime) > self::TIMEOUT) { - $channel->delete(); - $channel = null; - } - } - - if (empty($channel)) { - $channel = self::saveNew($user_id, $action, $arg1, $arg2); - } - - return $channel; + $channel = self::fetchChannel($user_id, $action, $arg1, $arg2); + + // Ignore (and delete!) old channels + + if (!empty($channel)) { + $modTime = strtotime($channel->modified); + if ((time() - $modTime) > self::TIMEOUT) { + $channel->delete(); + $channel = null; + } + } + + if (empty($channel)) { + $channel = self::saveNew($user_id, $action, $arg1, $arg2); + } + + return $channel; } - + static function getAllChannels($action, $arg1, $arg2) { - $channel = new Realtime_channel(); - - $channel->action = $action; - - if (is_null($arg1)) { - $channel->whereAdd('arg1 is null'); - } else { - $channel->arg1 = $arg1; - } - - if (is_null($arg2)) { - $channel->whereAdd('arg2 is null'); - } else { - $channel->arg2 = $arg2; - } - - $channel->whereAdd('modified > "' . common_sql_date(time() - self::TIMEOUT) . '"'); - - $channels = array(); - - if ($channel->find()) { - $channels = $channel->fetchAll(); - } - - return $channels; + $channel = new Realtime_channel(); + + $channel->action = $action; + + if (is_null($arg1)) { + $channel->whereAdd('arg1 is null'); + } else { + $channel->arg1 = $arg1; + } + + if (is_null($arg2)) { + $channel->whereAdd('arg2 is null'); + } else { + $channel->arg2 = $arg2; + } + + $channel->whereAdd('modified > "' . common_sql_date(time() - self::TIMEOUT) . '"'); + + $channels = array(); + + if ($channel->find()) { + $channels = $channel->fetchAll(); + } + + return $channels; } - + static function fetchChannel($user_id, $action, $arg1, $arg2) - { - $channel = new Realtime_channel(); - - if (is_null($user_id)) { - $channel->whereAdd('user_id is null'); - } else { - $channel->user_id = $user_id; - } - - $channel->action = $action; - - if (is_null($arg1)) { - $channel->whereAdd('arg1 is null'); - } else { - $channel->arg1 = $arg1; - } - - if (is_null($arg2)) { - $channel->whereAdd('arg2 is null'); - } else { - $channel->arg2 = $arg2; - } - - if ($channel->find(true)) { - // Touch it! - $orig = clone($channel); - $channel->modified = common_sql_now(); - $channel->update($orig); - return $channel; - } else { - return null; - } + { + $channel = new Realtime_channel(); + + if (is_null($user_id)) { + $channel->whereAdd('user_id is null'); + } else { + $channel->user_id = $user_id; + } + + $channel->action = $action; + + if (is_null($arg1)) { + $channel->whereAdd('arg1 is null'); + } else { + $channel->arg1 = $arg1; + } + + if (is_null($arg2)) { + $channel->whereAdd('arg2 is null'); + } else { + $channel->arg2 = $arg2; + } + + if ($channel->find(true)) { + $channel->increment(); + return $channel; + } else { + return null; + } } -} \ No newline at end of file + + function increment() + { + // XXX: race + $orig = clone($this); + $this->audience++; + $this->modified = common_sql_now(); + $this->update($orig); + } + + function touch() + { + // XXX: race + $orig = clone($this); + $this->modified = common_sql_now(); + $this->update($orig); + } + + function decrement() + { + // XXX: race + if ($this->audience == 1) { + $this->delete(); + } else { + $orig = clone($this); + $this->audience--; + $this->modified = common_sql_now(); + $this->update($orig); + } + } +}