| | |
| | | | Author: Thomas Bruederli <roundcube@gmail.com> | |
| | | | Author: Aleksander Machniak <alec@alec.pl> | |
| | | +-----------------------------------------------------------------------+ |
| | | |
| | | $Id$ |
| | | |
| | | */ |
| | | |
| | | |
| | |
| | | class rcube_cache |
| | | { |
| | | /** |
| | | * Instance of rcube_mdb2 or Memcache class |
| | | * Instance of database handler |
| | | * |
| | | * @var rcube_mdb2/Memcache |
| | | * @var rcube_db|Memcache|bool |
| | | */ |
| | | private $db; |
| | | private $type; |
| | |
| | | private $packed; |
| | | private $index; |
| | | private $cache = array(); |
| | | private $cache_keys = array(); |
| | | private $cache_changes = array(); |
| | | private $cache_sums = array(); |
| | | |
| | |
| | | * @param string $type Engine type ('db' or 'memcache' or 'apc') |
| | | * @param int $userid User identifier |
| | | * @param string $prefix Key name prefix |
| | | * @param int $ttl Expiration time of memcache/apc items in seconds (max.2592000) |
| | | * @param string $ttl Expiration time of memcache/apc items |
| | | * @param bool $packed Enables/disabled data serialization. |
| | | * It's possible to disable data serialization if you're sure |
| | | * stored data will be always a safe string |
| | | */ |
| | | function __construct($type, $userid, $prefix='', $ttl=0, $packed=true) |
| | | { |
| | | $rcmail = rcmail::get_instance(); |
| | | $type = strtolower($type); |
| | | $rcube = rcube::get_instance(); |
| | | $type = strtolower($type); |
| | | |
| | | if ($type == 'memcache') { |
| | | $this->type = 'memcache'; |
| | | $this->db = $rcmail->get_memcache(); |
| | | $this->db = $rcube->get_memcache(); |
| | | } |
| | | else if ($type == 'apc') { |
| | | $this->type = 'apc'; |
| | |
| | | } |
| | | else { |
| | | $this->type = 'db'; |
| | | $this->db = $rcmail->get_dbh(); |
| | | $this->db = $rcube->get_dbh(); |
| | | } |
| | | |
| | | // convert ttl string to seconds |
| | | $ttl = get_offset_sec($ttl); |
| | | if ($ttl > 2592000) $ttl = 2592000; |
| | | |
| | | $this->userid = (int) $userid; |
| | | $this->ttl = (int) $ttl; |
| | | $this->ttl = $ttl; |
| | | $this->packed = $packed; |
| | | $this->prefix = $prefix; |
| | | } |
| | |
| | | $this->cache = array(); |
| | | $this->cache_changed = false; |
| | | $this->cache_changes = array(); |
| | | $this->cache_keys = array(); |
| | | $this->cache_sums = array(); |
| | | } |
| | | // Remove keys by name prefix |
| | | else if ($prefix_mode) { |
| | |
| | | if (strpos($k, $key) === 0) { |
| | | $this->cache[$k] = null; |
| | | $this->cache_changes[$k] = false; |
| | | unset($this->cache_keys[$k]); |
| | | unset($this->cache_sums[$k]); |
| | | } |
| | | } |
| | | } |
| | |
| | | else { |
| | | $this->cache[$key] = null; |
| | | $this->cache_changes[$key] = false; |
| | | unset($this->cache_keys[$key]); |
| | | unset($this->cache_sums[$key]); |
| | | } |
| | | |
| | | // Remove record(s) from the backend |
| | |
| | | { |
| | | if ($this->type == 'db' && $this->db) { |
| | | $this->db->query( |
| | | "DELETE FROM ".get_table_name('cache'). |
| | | "DELETE FROM ".$this->db->table_name('cache'). |
| | | " WHERE user_id = ?". |
| | | " AND cache_key LIKE ?". |
| | | " AND " . $this->db->unixtimestamp('created')." < ?", |
| | |
| | | } |
| | | else { |
| | | $sql_result = $this->db->limitquery( |
| | | "SELECT cache_id, data, cache_key". |
| | | " FROM ".get_table_name('cache'). |
| | | "SELECT data, cache_key". |
| | | " FROM ".$this->db->table_name('cache'). |
| | | " WHERE user_id = ?". |
| | | " AND cache_key = ?". |
| | | // for better performance we allow more records for one key |
| | |
| | | |
| | | $this->cache[$key] = $data; |
| | | $this->cache_sums[$key] = $md5sum; |
| | | $this->cache_keys[$key] = $sql_arr['cache_id']; |
| | | } |
| | | else { |
| | | $this->cache[$key] = null; |
| | |
| | | return $this->add_record($this->ckey($key), $data); |
| | | } |
| | | |
| | | $key_exists = $this->cache_keys[$key]; |
| | | $key_exists = array_key_exists($key, $this->cache_sums); |
| | | $key = $this->prefix . '.' . $key; |
| | | |
| | | // Remove NULL rows (here we don't need to check if the record exist) |
| | | if ($data == 'N;') { |
| | | $this->db->query( |
| | | "DELETE FROM ".get_table_name('cache'). |
| | | "DELETE FROM ".$this->db->table_name('cache'). |
| | | " WHERE user_id = ?". |
| | | " AND cache_key = ?", |
| | | $this->userid, $key); |
| | |
| | | // update existing cache record |
| | | if ($key_exists) { |
| | | $result = $this->db->query( |
| | | "UPDATE ".get_table_name('cache'). |
| | | "UPDATE ".$this->db->table_name('cache'). |
| | | " SET created = ". $this->db->now().", data = ?". |
| | | " WHERE user_id = ?". |
| | | " AND cache_key = ?", |
| | |
| | | // for better performance we allow more records for one key |
| | | // so, no need to check if record exist (see rcube_cache::read_record()) |
| | | $result = $this->db->query( |
| | | "INSERT INTO ".get_table_name('cache'). |
| | | "INSERT INTO ".$this->db->table_name('cache'). |
| | | " (created, user_id, cache_key, data)". |
| | | " VALUES (".$this->db->now().", ?, ?, ?)", |
| | | $this->userid, $key, $data); |
| | |
| | | } |
| | | |
| | | $this->db->query( |
| | | "DELETE FROM ".get_table_name('cache'). |
| | | "DELETE FROM ".$this->db->table_name('cache'). |
| | | " WHERE user_id = ?" . $where, |
| | | $this->userid); |
| | | } |
| | |
| | | */ |
| | | private function delete_record($key, $index=true) |
| | | { |
| | | if ($this->type == 'memcache') |
| | | $this->db->delete($this->ckey($key)); |
| | | else |
| | | if ($this->type == 'memcache') { |
| | | // #1488592: use 2nd argument |
| | | $this->db->delete($this->ckey($key), 0); |
| | | } |
| | | else { |
| | | apc_delete($this->ckey($key)); |
| | | } |
| | | |
| | | if ($index) { |
| | | if (($idx = array_search($key, $this->index)) !== false) { |