Hello,
I have written a work around to the file system problem. I have implemented the caching in the wordpress database. I am not ready to release the next update of this plugin but I will provide the steps to implement it.
1. create the following table in the wordpress database. Replace $PREFIX with your wordpress database table prefix located in the wp-config.php file under $table_prefix like wp_api_cache.
CREATE TABLE $PREFIXapi_cache
(
id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
k VARCHAR(32),
data TEXT,
expiration TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
);
2. Create the following file under wp-content/plugins/google-latitude-history/google-api-php-client/src/cache/apiWordpressDatabaseCache.php
<?php
/*
* Copyright 2011 World Travel Blog
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* This class implements the cache with a WordPress Database.
* Below if the WordPress table this class uses. Replace $PREFIX
* with your WordPress database prefix ($wpdb->prefix) when
* creating the table.
*
* CREATE TABLE $PREFIX . _api_cache
* (
* id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
* k VARCHAR(32),
* data TEXT,
* expiration TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
* );
*
* @author Peter Rosanelli <peter@worldtravelblog.com>
*/
class apiWordpressDatabaseCache extends apiCache {
private $apiCacheTable;
public function __construct() {
global $apiConfig;
global $wpdb;
$this->apiCacheTable = $wpdb->prefix . 'api_cache';;
}
/**
* Retrieves the data for the given key, or false if they
* key is unknown or expired
*
* @param String $key The key who's data to retrieve
* @param boolean|int $expiration Expiration time in seconds
*
*/
public function get($key, $expiration = false) {
global $wpdb;
$result = $wpdb->get_row("SELECT * FROM " . $this->apiCacheTable . " WHERE K = '" . $key . "'");
if($result) {
$now = time();
if (! $expiration || (($mtime = strtotime($result->expiration)) !== false && ($now - $mtime) < $expiration)) {
$data = unserialize($result->data);
return $data;
}
}
return false;
}
/**
* Store the key => $value set. The $value is serialized
* by this function so can be of any type
*
* @param String $key Key of the data
* @param $value the data
*/
public function set($key, $value) {
global $wpdb;
$data = serialize($value);
$result = $wpdb->get_row("SELECT * FROM " . $this->apiCacheTable . " WHERE K = '" . $key . "'");
if($result) {
$wpdb->update( $this->apiCacheTable, array(
'data' => $data
), array(
'k' => $key
), array(
'%s'
), array(
'%s'
));
} else {
$wpdb->insert( $this->apiCacheTable, array(
'k' => $key,
'data' => $data
), array( '%s', '%s' ) );
}
}
/**
* Removes the key/data pair for the given $key
*
* @param String $key
*/
public function delete($key) {
global $wpdb;
$wpdb->query("DELETE FROM " . $this->apiCacheTable . " WHERE k = '" . $key . "'" );
}
}
3. In wp-content/plugins/google-latitude-history/google-api-php-client/src/config.php at ~ line 47:
'cacheClass' => 'apiFileCache',
to
'cacheClass' => 'apiWordpressDatabaseCache',
4, Refresh your Oauth token and you should be done!
