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Add support for locking with memcached during delete to avoid deadlocks.

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Signed-off-by: Andrew McMillan <andrew@morphoss.com>
This commit is contained in:
Andrew McMillan 2011-02-23 11:31:21 +13:00
parent 9158afd338
commit 441a0318bd
1 changed files with 7 additions and 1 deletions
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8
inc/caldav-DELETE.php
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@ -72,6 +72,10 @@ else {
$params = array( ':dav_id' => $dav_resource->resource_id() );
// We need to serialise access to this process just for this collection
$cache = getCacheInstance();
$myLock = $cache->acquireLock('collection-'.$dav_resource->parent_path());
if ( $qry->QDo("SELECT write_sync_change(collection_id, 404, caldav_data.dav_name) FROM caldav_data WHERE dav_id = :dav_id", $params )
&& $qry->QDo("DELETE FROM property WHERE dav_name = (SELECT dav_name FROM caldav_data WHERE dav_id = :dav_id)", $params )
&& $qry->QDo("DELETE FROM locks WHERE dav_name = (SELECT dav_name FROM caldav_data WHERE dav_id = :dav_id)", $params )
@ -81,10 +85,12 @@ else {
if ( function_exists('log_caldav_action') ) {
log_caldav_action( 'DELETE', $dav_resource->GetProperty('uid'), $dav_resource->GetProperty('user_no'), $dav_resource->GetProperty('collection_id'), $request->path );
}
$cache = getCacheInstance();
$cache->delete( 'collection-'.$dav_resource->parent_path(), null );
$cache->releaseLock($myLock);
$request->DoResponse( 204 );
}
$cache->releaseLock($myLock);
}
$request->DoResponse( 500 );