fcdd061b4f
The code is now more event-driven when it comes to rendering notices and their related HTML elements, since we can't have direct calls from core to a plugin. lib/activitymover.php has a function to move a Favorite activity which will not happen now. The move must be pluginified and performed as an event which plugins can catch on to.
395 lines
12 KiB
PHP
395 lines
12 KiB
PHP
<?php
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/*
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* StatusNet - the distributed open-source microblogging tool
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* Copyright (C) 2010 StatusNet, Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* Class for activity streams
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*
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* Includes objects like notices, subscriptions and from plugins.
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*
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* We extend atomusernoticefeed since it does some nice setup for us.
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*
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*/
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class UserActivityStream extends AtomUserNoticeFeed
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{
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public $activities = array();
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public $after = null;
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const OUTPUT_STRING = 1;
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const OUTPUT_RAW = 2;
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public $outputMode = self::OUTPUT_STRING;
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/**
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*
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* @param User $user
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* @param boolean $indent
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* @param boolean $outputMode: UserActivityStream::OUTPUT_STRING to return a string,
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* or UserActivityStream::OUTPUT_RAW to go to raw output.
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* Raw output mode will attempt to stream, keeping less
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* data in memory but will leave $this->activities incomplete.
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*/
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function __construct($user, $indent = true, $outputMode = UserActivityStream::OUTPUT_STRING, $after = null)
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{
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parent::__construct($user, null, $indent);
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$this->outputMode = $outputMode;
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if ($this->outputMode == self::OUTPUT_STRING) {
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// String buffering? Grab all the notices now.
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$notices = $this->getNotices();
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} elseif ($this->outputMode == self::OUTPUT_RAW) {
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// Raw output... need to restructure from the stringer init.
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$this->xw = new XMLWriter();
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$this->xw->openURI('php://output');
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if(is_null($indent)) {
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$indent = common_config('site', 'indent');
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}
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$this->xw->setIndent($indent);
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// We'll fetch notices later.
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$notices = array();
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} else {
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throw new Exception('Invalid outputMode provided to ' . __METHOD__);
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}
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$this->after = $after;
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// Assume that everything but notices is feasible
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// to pull at once and work with in memory...
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$subscriptions = $this->getSubscriptions();
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$subscribers = $this->getSubscribers();
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$groups = $this->getGroups();
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$messagesFrom = $this->getMessagesFrom();
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$messagesTo = $this->getMessagesTo();
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$objs = array_merge($subscriptions, $subscribers, $groups, $notices, $messagesFrom, $messagesTo);
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Event::handle('AppendUserActivityStreamObjects', array($this, &$objs));
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$subscriptions = null;
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$subscribers = null;
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$groups = null;
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unset($subscriptions);
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unset($subscribers);
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unset($groups);
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// Sort by create date
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usort($objs, 'UserActivityStream::compareObject');
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// We'll keep these around for later, and interleave them into
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// the output stream with the user's notices.
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$this->objs = $objs;
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}
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/**
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* Interleave the pre-sorted objects with the user's
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* notices, all in reverse chron order.
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*/
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function renderEntries($format=Feed::ATOM, $handle=null)
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{
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$haveOne = false;
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$end = time() + 1;
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foreach ($this->objs as $obj) {
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try {
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$act = $obj->asActivity();
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} catch (Exception $e) {
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common_log(LOG_ERR, $e->getMessage());
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continue;
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}
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$start = $act->time;
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if ($this->outputMode == self::OUTPUT_RAW && $start != $end) {
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// In raw mode, we haven't pre-fetched notices.
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// Grab the chunks of notices between other activities.
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try {
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$notices = $this->getNoticesBetween($start, $end);
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foreach ($notices as $noticeAct) {
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try {
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$nact = $noticeAct->asActivity($this->user);
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if ($format == Feed::ATOM) {
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$nact->outputTo($this, false, false);
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} else {
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if ($haveOne) {
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fwrite($handle, ",");
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}
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fwrite($handle, json_encode($nact->asArray()));
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$haveOne = true;
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}
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} catch (Exception $e) {
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common_log(LOG_ERR, $e->getMessage());
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continue;
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}
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$nact = null;
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unset($nact);
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}
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} catch (Exception $e) {
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common_log(LOG_ERR, $e->getMessage());
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}
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}
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$notices = null;
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unset($notices);
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try {
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if ($format == Feed::ATOM) {
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// Only show the author sub-element if it's different from default user
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$act->outputTo($this, false, ($act->actor->id != $this->user->getUri()));
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} else {
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if ($haveOne) {
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fwrite($handle, ",");
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}
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fwrite($handle, json_encode($act->asArray()));
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$haveOne = true;
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}
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} catch (Exception $e) {
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common_log(LOG_ERR, $e->getMessage());
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}
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$act = null;
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unset($act);
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$end = $start;
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}
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if ($this->outputMode == self::OUTPUT_RAW) {
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// Grab anything after the last pre-sorted activity.
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try {
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if (!empty($this->after)) {
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$notices = $this->getNoticesBetween($this->after, $end);
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} else {
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$notices = $this->getNoticesBetween(0, $end);
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}
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foreach ($notices as $noticeAct) {
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try {
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$nact = $noticeAct->asActivity($this->user);
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if ($format == Feed::ATOM) {
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$nact->outputTo($this, false, false);
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} else {
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if ($haveOne) {
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fwrite($handle, ",");
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}
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fwrite($handle, json_encode($nact->asArray()));
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$haveOne = true;
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}
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} catch (Exception $e) {
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common_log(LOG_ERR, $e->getMessage());
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continue;
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}
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}
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} catch (Exception $e) {
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common_log(LOG_ERR, $e->getMessage());
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}
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}
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if (empty($this->after) || strtotime($this->user->created) > $this->after) {
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// We always add the registration activity at the end, even if
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// they have older activities (from restored backups) in their stream.
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try {
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$ract = $this->user->registrationActivity();
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if ($format == Feed::ATOM) {
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$ract->outputTo($this, false, false);
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} else {
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if ($haveOne) {
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fwrite($handle, ",");
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}
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fwrite($handle, json_encode($ract->asArray()));
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$haveOne = true;
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}
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} catch (Exception $e) {
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common_log(LOG_ERR, $e->getMessage());
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continue;
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}
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}
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}
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function compareObject($a, $b)
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{
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$ac = strtotime((empty($a->created)) ? $a->modified : $a->created);
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$bc = strtotime((empty($b->created)) ? $b->modified : $b->created);
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return (($ac == $bc) ? 0 : (($ac < $bc) ? 1 : -1));
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}
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function getSubscriptions()
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{
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$subs = array();
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$sub = new Subscription();
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$sub->subscriber = $this->user->id;
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if (!empty($this->after)) {
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$sub->whereAdd("created > '" . common_sql_date($this->after) . "'");
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}
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if ($sub->find()) {
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while ($sub->fetch()) {
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if ($sub->subscribed != $this->user->id) {
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$subs[] = clone($sub);
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}
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}
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}
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return $subs;
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}
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function getSubscribers()
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{
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$subs = array();
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$sub = new Subscription();
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$sub->subscribed = $this->user->id;
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if (!empty($this->after)) {
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$sub->whereAdd("created > '" . common_sql_date($this->after) . "'");
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}
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if ($sub->find()) {
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while ($sub->fetch()) {
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if ($sub->subscriber != $this->user->id) {
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$subs[] = clone($sub);
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}
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}
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}
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return $subs;
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}
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/**
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*
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* @param int $start unix timestamp for earliest
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* @param int $end unix timestamp for latest
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* @return array of Notice objects
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*/
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function getNoticesBetween($start=0, $end=0)
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{
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$notices = array();
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$notice = new Notice();
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$notice->profile_id = $this->user->id;
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// Only stuff after $this->after
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if (!empty($this->after)) {
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if ($start) {
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$start = max($start, $this->after);
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}
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if ($end) {
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$end = max($end, $this->after);
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}
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}
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if ($start) {
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$tsstart = common_sql_date($start);
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$notice->whereAdd("created >= '$tsstart'");
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}
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if ($end) {
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$tsend = common_sql_date($end);
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$notice->whereAdd("created < '$tsend'");
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}
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$notice->orderBy('created DESC');
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if ($notice->find()) {
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while ($notice->fetch()) {
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$notices[] = clone($notice);
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}
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}
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return $notices;
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}
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function getNotices()
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{
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if (!empty($this->after)) {
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return $this->getNoticesBetween($this->after);
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} else {
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return $this->getNoticesBetween();
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}
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}
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function getGroups()
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{
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$groups = array();
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$gm = new Group_member();
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$gm->profile_id = $this->user->id;
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if (!empty($this->after)) {
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$gm->whereAdd("created > '" . common_sql_date($this->after) . "'");
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}
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if ($gm->find()) {
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while ($gm->fetch()) {
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$groups[] = clone($gm);
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}
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}
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return $groups;
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}
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function getMessagesTo()
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{
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$msgMap = Message::listGet('to_profile', array($this->user->id));
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$messages = $msgMap[$this->user->id];
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if (!empty($this->after)) {
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$messages = array_filter($messages, array($this, 'createdAfter'));
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}
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return $messages;
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}
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function getMessagesFrom()
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{
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$msgMap = Message::listGet('from_profile', array($this->user->id));
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$messages = $msgMap[$this->user->id];
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if (!empty($this->after)) {
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$messages = array_filter($messages, array($this, 'createdAfter'));
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}
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return $messages;
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}
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function createdAfter($item) {
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$created = strtotime((empty($item->created)) ? $item->modified : $item->created);
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return ($created >= $this->after);
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}
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function writeJSON($handle)
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{
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require_once INSTALLDIR.'/lib/activitystreamjsondocument.php';
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fwrite($handle, '{"items": [');
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$this->renderEntries(Feed::JSON, $handle);
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fwrite($handle, ']}');
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}
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}
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