X-Git-Url: http://git.vrable.net/?p=cumulus.git;a=blobdiff_plain;f=localdb.h;h=5901836f3c47e6ccc8e91f4822a93cc368c0feb6;hp=69fb330024f7cc0661a025b09e75929031080121;hb=64bff41cb3ccdd60e767a5bb9ed8525d2dda1966;hpb=cc2d3611ed50f5965a9138ffaf3262417993c4f8 diff --git a/localdb.h b/localdb.h index 69fb330..5901836 100644 --- a/localdb.h +++ b/localdb.h @@ -1,7 +1,23 @@ -/* LBS: An LFS-inspired filesystem backup system - * Copyright (C) 2007 Michael Vrable +/* Cumulus: Efficient Filesystem Backup to the Cloud + * Copyright (C) 2007-2008 The Cumulus Developers + * See the AUTHORS file for a list of contributors. * - * When creating backup snapshots, maintain a local database of data blocks and + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +/* When creating backup snapshots, maintain a local database of data blocks and * checksums, in addition to the data contents (which may be stored remotely). * This database is consulted when attempting to build incremental snapshots, * as it says which objects can be reused. @@ -31,11 +47,19 @@ public: int *group); bool IsAvailable(const ObjectReference &ref); void UseObject(const ObjectReference& ref); + void UseSegment(const std::string &segment, double utilization); void SetSegmentChecksum(const std::string &segment, const std::string &path, - const std::string &checksum); + const std::string &checksum, int size); bool GetSegmentChecksum(const std::string &segment, std::string *seg_path, std::string *seg_checksum); + + bool LoadChunkSignatures(ObjectReference ref, + void **buf, size_t *len, + std::string *algorithm); + void StoreChunkSignatures(ObjectReference ref, + const void *buf, size_t len, + const std::string &algorithm); private: sqlite3 *db; int64_t snapshotid;