*/
require_once INSTALLDIR.'/classes/Memcached_DataObject.php';
+/* We keep the first three 20-notice pages, plus one for pagination check,
+ * in the memcached cache. */
+
+define('NOTICE_CACHE_WINDOW', 61);
+
class Notice extends Memcached_DataObject
{
###START_AUTOCODE
return Profile::staticGet($this->profile_id);
}
+ function delete() {
+ $this->blowCaches();
+ $this->blowFavesCache();
+ parent::delete();
+ }
+
function saveTags() {
/* extract all #hastags */
$count = preg_match_all('/(?:^|\s)#([A-Za-z0-9_\-\.]{1,64})/', strtolower($this->content), $match);
$id = $notice->insert();
if (!$id) {
+ common_log_db_error($notice, 'INSERT', __FILE__);
return _('Problem saving notice.');
}
$notice->uri = common_notice_uri($notice);
if (!$notice->update($orig)) {
+ common_log_db_error($notice, 'UPDATE', __FILE__);
return _('Problem saving notice.');
}
}
# XXX: someone clever could prepend instead of clearing the cache
if (common_config('memcached', 'enabled')) {
- $notice->blowSubsCache();
+ $notice->blowCaches();
}
return $notice;
}
+
+ function blowCaches() {
+ $this->blowSubsCache();
+ $this->blowNoticeCache();
+ $this->blowRepliesCache();
+ $this->blowPublicCache();
+ }
function blowSubsCache() {
- $cache = new Memcache();
- if ($cache->connect(common_config('memcached', 'server'), common_config('memcached', 'port'))) {
+ $cache = common_memcache();
+ if ($cache) {
$user = new User();
$user->query('SELECT id ' .
unset($user);
}
}
+
+ function blowNoticeCache() {
+ if ($this->is_local) {
+ $cache = common_memcache();
+ if ($cache) {
+ $cache->delete(common_cache_key('user:notices:'.$this->profile_id));
+ }
+ }
+ }
+
+ function blowRepliesCache() {
+ $cache = common_memcache();
+ if ($cache) {
+ $reply = new Reply();
+ $reply->notice_id = $this->id;
+ if ($reply->find()) {
+ while ($reply->fetch()) {
+ $cache->delete(common_cache_key('user:replies:'.$reply->profile_id));
+ }
+ }
+ $reply->free();
+ unset($reply);
+ }
+ }
+
+ function blowPublicCache() {
+ if ($this->is_local) {
+ $cache = common_memcache();
+ if ($cache) {
+ $cache->delete(common_cache_key('public'));
+ }
+ }
+ }
+
+ function blowFavesCache() {
+ $cache = common_memcache();
+ if ($cache) {
+ $fave = new Fave();
+ $fave->notice_id = $this->id;
+ if ($fave->find()) {
+ while ($fave->fetch()) {
+ $cache->delete(common_cache_key('user:faves:'.$fave->user_id));
+ }
+ }
+ $fave->free();
+ unset($fave);
+ }
+ }
+
+ static function getStream($qry, $cachekey, $offset=0, $limit=20) {
+
+ if (common_config('memcached', 'enabled')) {
+ return Notice::getCachedStream($qry, $cachekey, $offset, $limit);
+ } else {
+ return Notice::getStreamDirect($qry, $offset, $limit);
+ }
+
+ }
+
+ static function getStreamDirect($qry, $offset, $limit) {
+
+ $qry .= ' ORDER BY notice.created DESC, notice.id DESC ';
+
+ if(common_config('db','type')=='pgsql') {
+ $qry .= ' LIMIT ' . $limit . ' OFFSET ' . $offset;
+ } else {
+ $qry .= ' LIMIT ' . $offset . ', ' . $limit;
+ }
+
+ $notice = new Notice();
+
+ $notice->query($qry);
+
+ return $notice;
+ }
+
+ static function getCachedStream($qry, $cachekey, $offset, $limit) {
+
+ # If outside our cache window, just go to the DB
+
+ if ($offset + $limit > NOTICE_CACHE_WINDOW) {
+ return Notice::getStreamDirect($qry, $offset, $limit);
+ }
+
+ # Get the cache; if we can't, just go to the DB
+
+ $cache = common_memcache();
+
+
+ if (!$cache) {
+ return Notice::getStreamDirect($qry, $offset, $limit);
+ }
+
+ # Get the notices out of the cache
+
+ $notices = $cache->get(common_cache_key($cachekey));
+
+ # On a cache hit, return a DB-object-like wrapper
+
+ if ($notices !== FALSE) {
+ $wrapper = new NoticeWrapper(array_slice($notices, $offset, $limit));
+ return $wrapper;
+ }
+
+ # Otherwise, get the full cache window out of the DB
+
+ $notice = Notice::getStreamDirect($qry, 0, NOTICE_CACHE_WINDOW);
+
+ # If there are no hits, just return the value
+
+ if (!$notice) {
+ return $notice;
+ }
+
+ # Pack results into an array
+
+ $notices = array();
+
+ while ($notice->fetch()) {
+ $notices[] = clone($notice);
+ }
+
+ # Store the array in the cache for next time
+
+ $result = $cache->set(common_cache_key($cachekey), $notices);
+
+ # return a wrapper of the array for use now
+
+ $wrapper = new NoticeWrapper(array_slice($notices, $offset, $limit));
+
+ return $wrapper;
+ }
+
+ function publicStream($offset=0, $limit=20) {
+
+ $qry = 'SELECT * FROM notice ';
+
+ if (common_config('public', 'localonly')) {
+ $qry .= ' WHERE is_local = 1 ';
+ }
+
+ return Notice::getStream($qry,
+ 'public',
+ $offset, $limit);
+ }
}