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- Re-designed cache, fixes memcache/apc issues

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release-0.6
alecpl 14 years ago
parent 254d5ef32b
commit ccc059fd70
4 changed files with 133 additions and 179 deletions
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4
program/include/rcmail.php
Unescape Escape View File

@ -363,7 +363,7 @@ class rcmail
public function get_cache($name, $type)
{
if (!isset($this->caches[$name])) {
$this->caches[$name] = new rcube_cache($type, $_SESSION['user_id'], $name.'.');
$this->caches[$name] = new rcube_cache($type, $_SESSION['user_id'], $name);
}
return $this->caches[$name];
@ -852,7 +852,7 @@ class rcmail
$_SESSION['timezone'] = floatval($_REQUEST['_timezone']);
// force reloading complete list of subscribed mailboxes
$this->imap->clear_cache('mailboxes');
$this->imap->clear_cache('mailboxes', true);
return true;
}

290
program/include/rcube_cache.php
Unescape Escape View File

@ -41,13 +41,13 @@ class rcube_cache
private $type;
private $userid;
private $prefix;
private $db_readed;
private $cache = array();
private $cache_keys = array();
private $cache_changes = array();
private $cache_sums = array();
/**
* Object constructor.
*
@ -87,32 +87,9 @@ class rcube_cache
*/
function get($key)
{
$key = $this->prefix.$key;
if ($this->type == 'memcache') {
return $this->read_cache_record($key);
}
// read cache (if it was not read before)
if (!count($this->cache)) {
$do_read = true;
}
else if (isset($this->cache[$key])) {
$do_read = false;
}
// Find cache prefix, we'll load data for all keys
// with specified (class) prefix into internal cache (memory)
else if ($pos = strpos($key, '.')) {
$prefix = substr($key, 0, $pos);
$regexp = '/^' . preg_quote($prefix, '/') . '/';
if (!count(preg_grep($regexp, array_keys($this->cache_keys)))) {
$do_read = true;
}
}
if ($do_read) {
return $this->read_cache_record($key);
}
// read cache (if it was read before)
if (!$this->db_readed)
$this->read_cache();
return $this->cache[$key];
}
@ -126,8 +103,6 @@ class rcube_cache
*/
function set($key, $data)
{
$key = $this->prefix.$key;
$this->cache[$key] = $data;
$this->cache_changed = true;
$this->cache_changes[$key] = true;
@ -137,48 +112,54 @@ class rcube_cache
/**
* Clears the cache.
*
* @param string $key Cache key name or pattern
* @param boolean $pattern_mode Enable it to clear all keys with name
* matching PREG pattern in $key
* @param string $key Cache key name or pattern
* @param boolean $prefix_mode Enable it to clear all keys starting
* with prefix specified in $key
*/
function remove($key=null, $pattern_mode=false)
{
// Remove all keys
if ($key === null) {
foreach (array_keys($this->cache) as $key)
$this->clear_cache_record($key);
$this->cache = array();
$this->cache_changed = false;
$this->cache_changes = array();
$this->cache_keys = array();
$where = " AND cache_key LIKE " . $this->db->quote($this->prefix.'.%');
}
else if ($pattern_mode) {
// add cache prefix into PCRE expression
if (preg_match('/^(.)([^a-z0-9]*).*/i', $key, $matches)) {
$key = $matches[1] . $matches[2] . preg_quote($this->prefix, $matches[1])
. substr($key, strlen($matches[1].$matches[2]));
}
else {
$key = $this->prefix.$key;
}
// Remove keys by name prefix
else if (!$prefix_mode) {
$this->cache[$key] = null;
$this->cache_changes[$key] = false;
unset($this->cache_keys[$key]);
$where = " AND cache_key = " . $this->db->quote($this->prefix.'.'.$key);
}
// Remove one key by name
else {
foreach (array_keys($this->cache) as $k) {
if (preg_match($key, $k)) {
$this->clear_cache_record($k);
if (strpos($k, $key) === 0) {
$this->cache[$k] = null;
$this->cache_changes[$k] = false;
unset($this->cache[$key]);
unset($this->cache_keys[$k]);
}
}
$where = " AND cache_key LIKE " . $this->db->quote($this->prefix.'.'.$key.'%');
if (!count($this->cache)) {
$this->cache_changed = false;
}
}
else {
$key = $this->prefix.$key;
$this->clear_cache_record($key);
$this->cache_changes[$key] = false;
unset($this->cache[$key]);
if (!$this->db) {
return;
}
if ($this->type != 'db') {
return;
}
$this->db->query(
"DELETE FROM ".get_table_name('cache').
" WHERE user_id = ?" . $where,
$this->userid);
}
@ -191,114 +172,128 @@ class rcube_cache
return;
}
foreach ($this->cache as $key => $data) {
// The key has been used
if ($this->cache_changes[$key]) {
// Make sure we're not going to write unchanged data
// by comparing current md5 sum with the sum calculated on DB read
$data = serialize($data);
if (!$this->cache_sums[$key] || $this->cache_sums[$key] != md5($data)) {
$this->write_cache_record($key, $data);
}
}
}
$this->write_cache();
}
/**
* Returns cached entry.
*
* @param string $key Cache key
*
* @return mixed Cached value
* Reads cache entries.
* @access private
*/
private function read_cache_record($key)
private function read_cache()
{
if (!$this->db) {
return null;
}
if ($this->type == 'memcache') {
$data = $this->db->get($this->ckey($key));
if ($data) {
$this->cache_sums[$key] = md5($data);
$data = unserialize($data);
$data = $this->db->get($this->ckey());
}
else if ($this->type == 'apc') {
$data = apc_fetch($this->ckey());
}
if ($data) {
$this->cache_sums['data'] = md5($data);
$data = unserialize($data);
if (is_array($data)) {
$this->cache = $data;
}
return $this->cache[$key] = $data;
}
else if ($this->type == 'db') {
// get cached data from DB
$sql_result = $this->db->query(
"SELECT cache_id, data, cache_key".
" FROM ".get_table_name('cache').
" WHERE user_id = ?".
" AND cache_key LIKE " . $this->db->quote($this->prefix.'.%'),
$this->userid);
if ($this->type == 'apc') {
$data = apc_fetch($this->ckey($key));
if ($data) {
$this->cache_sums[$key] = md5($data);
$data = unserialize($data);
while ($sql_arr = $this->db->fetch_assoc($sql_result)) {
$key = substr($sql_arr['cache_key'], strlen($this->prefix)+1);
$md5sum = $sql_arr['data'] ? md5($sql_arr['data']) : null;
$data = $sql_arr['data'] ? unserialize($sql_arr['data']) : null;
$this->cache[$key] = $data;
$this->cache_sums[$key] = $md5sum;
$this->cache_keys[$key] = $sql_arr['cache_id'];
}
return $this->cache[$key] = $data;
}
// Find cache prefix, we'll load data for all keys
// with specified (class) prefix into internal cache (memory)
if ($pos = strpos($key, '.')) {
$prefix = substr($key, 0, $pos);
$where = " AND cache_key LIKE '$prefix%'";
$this->db_readed = true;
}
/**
* Writes the cache content into DB.
*
* @return boolean Write result
* @access private
*/
private function write_cache()
{
if (!$this->db) {
return false;
}
else {
$where = " AND cache_key = ".$this->db->quote($key);
if ($this->type == 'memcache' || $this->type == 'apc') {
// remove nulls
foreach ($this->cache as $idx => $value) {
if ($value === null)
unset($this->cache[$idx]);
}
$data = serialize($this->cache);
$key = $this->ckey();
// Don't save the data if nothing changed
if ($this->cache_sums['data'] && $this->cache_sums['data'] == md5($data)) {
return true;
}
if ($this->type == 'memcache') {
$result = $this->db->replace($key, $data, MEMCACHE_COMPRESSED);
if (!$result)
$result = $this->db->set($key, $data, MEMCACHE_COMPRESSED);
return $result;
}
if ($this->type == 'apc') {
if (apc_exists($key))
apc_delete($key);
return apc_store($key, $data);
}
}
// get cached data from DB
$sql_result = $this->db->query(
"SELECT cache_id, data, cache_key".
" FROM ".get_table_name('cache').
" WHERE user_id = ?".$where,
$this->userid);
foreach ($this->cache as $key => $data) {
// The key has been used
if ($this->cache_changes[$key]) {
// Make sure we're not going to write unchanged data
// by comparing current md5 sum with the sum calculated on DB read
$data = serialize($data);
while ($sql_arr = $this->db->fetch_assoc($sql_result)) {
$sql_key = $sql_arr['cache_key'];
$this->cache_keys[$sql_key] = $sql_arr['cache_id'];
if (!isset($this->cache[$sql_key])) {
$md5sum = $sql_arr['data'] ? md5($sql_arr['data']) : null;
$data = $sql_arr['data'] ? unserialize($sql_arr['data']) : false;
$this->cache[$sql_key] = $data;
$this->cache_sums[$sql_key] = $md5sum;
if (!$this->cache_sums[$key] || $this->cache_sums[$key] != md5($data)) {
$this->write_record($key, $data);
}
}
}
return $this->cache[$key];
return true;
}
/**
* Writes single cache record.
* Writes single cache record into SQL database.
*
* @param string $key Cache key
* @param mxied $data Cache value
* @access private
*/
private function write_cache_record($key, $data)
private function write_record($key, $data)
{
if (!$this->db) {
return false;
}
if ($this->type == 'memcache') {
$key = $this->ckey($key);
$result = $this->db->replace($key, $data, MEMCACHE_COMPRESSED);
if (!$result)
$result = $this->db->set($key, $data, MEMCACHE_COMPRESSED);
return $result;
}
if ($this->type == 'apc') {
$key = $this->ckey($key);
if (apc_exists($key))
apc_delete($key);
return apc_store($key, $data);
}
// update existing cache record
if ($this->cache_keys[$key]) {
$this->db->query(
@ -306,7 +301,7 @@ class rcube_cache
" SET created = ". $this->db->now().", data = ?".
" WHERE user_id = ?".
" AND cache_key = ?",
$data, $this->userid, $key);
$data, $this->userid, $this->prefix . '.' . $key);
}
// add new cache record
else {
@ -314,60 +309,19 @@ class rcube_cache
"INSERT INTO ".get_table_name('cache').
" (created, user_id, cache_key, data)".
" VALUES (".$this->db->now().", ?, ?, ?)",
$this->userid, $key, $data);
// get cache entry ID for this key
$sql_result = $this->db->query(
"SELECT cache_id".
" FROM ".get_table_name('cache').
" WHERE user_id = ?".
" AND cache_key = ?",
$this->userid, $key);
if ($sql_arr = $this->db->fetch_assoc($sql_result))
$this->cache_keys[$key] = $sql_arr['cache_id'];
}
}
/**
* Clears cache for single record.
*
* @param string $key Cache key
* @access private
*/
private function clear_cache_record($key)
{
if (!$this->db) {
return false;
}
if ($this->type == 'memcache') {
return $this->db->delete($this->ckey($key));
$this->userid, $this->prefix . '.' . $key, $data);
}
if ($this->type == 'apc') {
return apc_delete($this->ckey($key));
}
$this->db->query(
"DELETE FROM ".get_table_name('cache').
" WHERE user_id = ?".
" AND cache_key = ?",
$this->userid, $key);
unset($this->cache_keys[$key]);
}
/**
* Creates per-user cache key (for memcache and apc)
*
* @param string $key Cache key
* @return string Cache key
* @access private
*/
private function ckey($key)
private function ckey()
{
return sprintf('[%d]%s', $this->userid, $key);
return sprintf('%d-%s', $this->userid, $this->prefix);
}
}

16
program/include/rcube_imap.php
Unescape Escape View File

@ -3232,7 +3232,7 @@ class rcube_imap
// try to subscribe it
if ($result) {
// clear cache
$this->clear_cache('/^mailboxes.*/', true);
$this->clear_cache('mailboxes', true);
if ($subscribe)
$this->subscribe($mailbox);
@ -3288,7 +3288,7 @@ class rcube_imap
// clear cache
$this->clear_message_cache($mailbox.'.msg');
$this->clear_cache('/^mailboxes.*/', true);
$this->clear_cache('mailboxes', true);
}
return $result;
@ -3330,7 +3330,7 @@ class rcube_imap
// clear mailbox-related cache
$this->clear_message_cache($mailbox.'.msg');
$this->clear_cache('/^mailboxes.*/', true);
$this->clear_cache('mailboxes', true);
}
return $result;
@ -3786,12 +3786,12 @@ class rcube_imap
/**
* Clears the cache.
*
* @param string $key Cache key name or pattern
* @param boolean $pattern_mode Enable it to clear all keys with name
* matching PREG pattern in $key
* @param string $key Cache key name or pattern
* @param boolean $prefix_mode Enable it to clear all keys starting
* with prefix specified in $key
* @access public
*/
function clear_cache($key=null, $pattern_mode=false)
function clear_cache($key=null, $prefix_mode=false)
{
if ($this->cache) {
$this->cache->remove($key, $pattern_mode);
@ -4585,7 +4585,7 @@ class rcube_imap
// clear cached mailbox list(s)
if ($updated) {
$this->clear_cache('/^mailboxes.*/', true);
$this->clear_cache('mailboxes', true);
}
return $updated;

2
program/steps/settings/folders.inc
Unescape Escape View File

@ -192,7 +192,7 @@ function rcube_subscription_form($attrib)
}
// get folders from server
$IMAP->clear_cache('/^mailboxes.*/', true);
$IMAP->clear_cache('mailboxes', true);
$a_unsubscribed = $IMAP->list_unsubscribed();
$a_subscribed = $IMAP->list_mailboxes();

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