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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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62
repository/filesystem/lib.php
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@ -265,17 +265,6 @@ class repository_filesystem extends repository {
return FILE_INTERNAL | FILE_REFERENCE;
}
/**
* Return reference file life time
*
* @param string $ref
* @return int
*/
public function get_reference_file_lifetime($ref) {
// Does not cost us much to synchronise within our own filesystem, set to 1 minute
return 60;
}
/**
* Return human readable reference information
*
@ -292,37 +281,40 @@ class repository_filesystem extends repository {
}
}
/**
* Returns information about file in this repository by reference
*
* Returns null if file not found or is not readable
*
* @param stdClass $reference file reference db record
* @return stdClass|null contains one of the following:
* - 'filesize' if file should not be copied to moodle filepool
* - 'filepath' if file should be copied to moodle filepool
*/
public function get_file_by_reference($reference) {
$ref = $reference->reference;
if ($ref{0} == '/') {
$filepath = $this->root_path.substr($ref, 1, strlen($ref)-1);
} else {
$filepath = $this->root_path.$ref;
public function sync_reference(stored_file $file) {
if ($file->get_referencelastsync() + 60 > time()) {
// Does not cost us much to synchronise within our own filesystem, check every 1 minute.
return false;
}
static $issyncing = false;
if ($issyncing) {
// Avoid infinite recursion when calling $file->get_filesize() and get_contenthash().
return;
}
$filepath = $this->root_path.ltrim($file->get_reference(), '/');
if (file_exists($filepath) && is_readable($filepath)) {
$fs = get_file_storage();
$issyncing = true;
if (file_extension_in_typegroup($filepath, 'web_image')) {
// return path to image files so it will be copied into moodle filepool
// we need the file in filepool to generate an image thumbnail
return (object)array('filepath' => $filepath);
$contenthash = sha1_file($filepath);
if ($file->get_contenthash() == $contenthash) {
// File did not change since the last synchronisation.
$filesize = filesize($filepath);
} else {
// Copy file into moodle filepool (used to generate an image thumbnail).
list($contenthash, $filesize, $newfile) = $fs->add_file_to_pool($filepath);
}
} else {
// return just the file size so file will NOT be copied into moodle filepool
return (object)array(
'filesize' => filesize($filepath)
);
// Update only file size so file will NOT be copied into moodle filepool.
$contenthash = null;
$filesize = filesize($filepath);
}
$issyncing = false;
$file->set_synchronized($contenthash, $filesize);
} else {
return null;
$file->set_missingsource();
}
return true;
}
/**