xapian-core/backends/databasereplicator.cc

   1 /** @file databasereplicator.cc
   2  * @brief Support class for database replication.
   3  */
   4 /* Copyright 2008 Lemur Consulting Ltd
   5  * Copyright 2009,2010,2011,2012 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 #include <config.h>
  24
  25 #include "databasereplicator.h"
  26
  27 #include "xapian/error.h"
  28 #include "xapian/version.h" // For XAPIAN_HAS_XXX_BACKEND.
  29
  30 #include "debuglog.h"
  31 #include "filetests.h"
  32
  33 #if defined XAPIAN_HAS_GLASS_BACKEND && defined XAPIAN_HAS_REMOTE_BACKEND
  34 # include "glass/glass_databasereplicator.h"
  35 #endif
  36
  37 using namespace std;
  38
  39 namespace Xapian {
  40
  41 DatabaseReplicator::~DatabaseReplicator()
  42 {
  43 }
  44
  45 DatabaseReplicator *
  46 DatabaseReplicator::open(const string & path)
  47 {
  48     LOGCALL_STATIC(DB, DatabaseReplicator *, "DatabaseReplicator::open", path);
  49
  50 #ifdef XAPIAN_HAS_GLASS_BACKEND
  51     if (file_exists(path + "/iamglass")) {
  52 # ifdef XAPIAN_HAS_REMOTE_BACKEND
  53         return new GlassDatabaseReplicator(path);
  54 # else
  55         throw FeatureUnavailableError("Replication disabled");
  56 # endif
  57     }
  58 #endif
  59
  60     // FIXME: Replication of honey databases.
  61
  62     if (file_exists(path + "/iamchert")) {
  63         throw FeatureUnavailableError("Chert backend no longer supported");
  64     }
  65
  66     if (file_exists(path + "/iamflint")) {
  67         throw FeatureUnavailableError("Flint backend no longer supported");
  68     }
  69
  70     if (file_exists(path + "/iambrass")) {
  71         throw FeatureUnavailableError("Brass backend no longer supported");
  72     }
  73
  74     throw DatabaseOpeningError("Couldn't detect type of database: " + path);
  75 }
  76
  77 }