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[HttpCachingBridgeAbstract] Add duration parameter to 'get_cached'

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This allows to specify the cache duration for a specific
url without the need to delete the cache file first.
Instead the cache file is automatically deleted if the
duration elapsed.
This commit is contained in:
logmanoriginal 2016-09-09 22:14:49 +02:00
parent 9711e87fc9
commit 84956c4daf
1 changed files with 8 additions and 1 deletions
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9
lib/HttpCachingBridgeAbstract.php
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@ -10,13 +10,20 @@ abstract class HttpCachingBridgeAbstract extends BridgeAbstract {
/** /**
* Maintain locally cached versions of pages to download, to avoid multiple downloads. * Maintain locally cached versions of pages to download, to avoid multiple downloads.
* @param url url to cache * @param url url to cache
* @param duration duration of the cache file in seconds (default: 24h/86400s)
* @return content of the file as string * @return content of the file as string
*/ */
public function get_cached($url){ public function get_cached($url, $duration = 86400){
// TODO build this from the variable given to Cache // TODO build this from the variable given to Cache
$cacheDir = __DIR__ . '/../cache/pages/'; $cacheDir = __DIR__ . '/../cache/pages/';
$filepath = $this->buildCacheFilePath($url, $cacheDir); $filepath = $this->buildCacheFilePath($url, $cacheDir);
if(file_exists($filepath) && filectime($filepath) < time() - $duration){
$this->debugMessage('Cache file ' . $filepath . ' exceeded duration of ' . $duration . ' seconds.');
unlink ($filepath);
$this->debugMessage('Cached file deleted: ' . $filepath);
}
if(file_exists($filepath)){ if(file_exists($filepath)){
$this->debugMessage('loading cached file from ' . $filepath . ' for page at url ' . $url); $this->debugMessage('loading cached file from ' . $filepath . ' for page at url ' . $url);
// TODO touch file and its parent, and try to do neighbour deletion // TODO touch file and its parent, and try to do neighbour deletion