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MDL-42016 repository: Implement new sync method in repositories

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This commit is contained in:
Marina Glancy 2013-10-04 23:26:03 +10:00
parent 873555604f
commit 5e5923ea28
4 changed files with 92 additions and 122 deletions
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38
repository/dropbox/lib.php
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@ -546,25 +546,18 @@ class repository_dropbox extends repository {
return serialize($reference);
}
/**
* Returns information about file in this repository by reference
* {@link repository::get_file_reference()}
* {@link repository::get_file()}
*
* Returns null if file not found or is not readable
*
* @param stdClass $reference file reference db record
* @return null|stdClass that has 'filepath' property
*/
public function get_file_by_reference($reference) {
global $USER;
$ref = unserialize($reference->reference);
public function sync_reference(stored_file $file) {
if ($file->get_referencelastsync() + DAYSECS > time()) {
// Synchronise not more often than once a day.
return false;
}
$ref = unserialize($file->get_reference());
if (!isset($ref->url)) {
// this is an old-style reference in DB. We need to fix it
$ref = unserialize($this->fix_old_style_reference($reference->reference));
$ref = unserialize($this->fix_old_style_reference($file->get_reference()));
}
if (!isset($ref->url)) {
return null;
return false;
}
$c = new curl;
$url = $this->get_file_download_link($ref->url);
@ -574,7 +567,10 @@ class repository_dropbox extends repository {
$result = $c->download_one($url, array(), array('filepath' => $saveas, 'timeout' => self::SYNCIMAGE_TIMEOUT, 'followlocation' => true));
$info = $c->get_info();
if ($result === true && isset($info['http_code']) && $info['http_code'] == 200) {
return (object)array('filepath' => $saveas);
$fs = get_file_storage();
list($contenthash, $filesize, $newfile) = $fs->add_file_to_pool($saveas);
$file->set_synchronized($contenthash, $filesize);
return true;
}
} catch (Exception $e) {}
}
@ -583,9 +579,12 @@ class repository_dropbox extends repository {
if (isset($info['http_code']) && $info['http_code'] == 200 &&
array_key_exists('download_content_length', $info) &&
$info['download_content_length'] >= 0) {
return (object)array('filesize' => (int)$info['download_content_length']);
$filesize = (int)$info['download_content_length'];
$file->set_synchronized(null, $filesize);
return true;
}
return null;
$file->set_missingsource();
return true;
}
/**
@ -648,8 +647,7 @@ class repository_dropbox extends repository {
/**
* Returns the maximum size of the Dropbox files to cache in moodle
*
* Note that {@link repository_dropbox::get_file_by_reference()} called by
* {@link repository::sync_external_file()} will try to cache images even
* Note that {@link repository_dropbox::sync_reference()} will try to cache images even
* when they are bigger in order to generate thumbnails. However there is
* a small timeout for downloading images for synchronisation and it will
* probably fail if the image is too big.