1 /** @file 2 * @brief Support for glass database replication 3 */ 4 /* Copyright 2008 Lemur Consulting Ltd 5 * Copyright 2009,2010,2011,2014 Olly Betts 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License as 9 * published by the Free Software Foundation; either version 2 of the 10 * License, or (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 20 * USA 21 */ 22 23 #ifndef XAPIAN_INCLUDED_GLASS_DATABASEREPLICATOR_H 24 #define XAPIAN_INCLUDED_GLASS_DATABASEREPLICATOR_H 25 26 #include "backends/databasereplicator.h" 27 #include "glass_defs.h" 28 29 class GlassDatabaseReplicator : public Xapian::DatabaseReplicator { 30 /** Path of database. 31 */ 32 std::string db_dir; 33 34 /** File descriptors for writing to each table. 35 * 36 * The corresponding entry is -1 if that table is not yet opened. 37 */ 38 mutable int fds[Glass::MAX_]; 39 40 /** Process a chunk which holds a version file. 41 */ 42 void process_changeset_chunk_version(std::string & buf, 43 RemoteConnection & conn, 44 double end_time) const; 45 46 /** Process a chunk which holds a list of changed blocks in the 47 * database. 48 */ 49 void process_changeset_chunk_blocks(Glass::table_type table, 50 unsigned v, 51 std::string & buf, 52 RemoteConnection & conn, 53 double end_time) const; 54 55 void commit() const; 56 57 public: 58 explicit GlassDatabaseReplicator(const std::string & db_dir_); 59 60 ~GlassDatabaseReplicator(); 61 62 /** Virtual methods of DatabaseReplicator. */ 63 //@{ 64 bool check_revision_at_least(const std::string & rev, 65 const std::string & target) const; 66 std::string apply_changeset_from_conn(RemoteConnection & conn, 67 double end_time, 68 bool valid) const; 69 std::string get_uuid() const; 70 //@} 71 }; 72 73 #endif /* XAPIAN_INCLUDED_GLASS_DATABASEREPLICATOR_H */ 74