xapian-core/backends/databasereplicator.cc

   1 /** @file
   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 #ifdef XAPIAN_HAS_CHERT_BACKEND
  37 # include "chert/chert_databasereplicator.h"
  38 #endif
  39
  40 using namespace std;
  41
  42 namespace Xapian {
  43
  44 DatabaseReplicator::~DatabaseReplicator()
  45 {
  46 }
  47
  48 DatabaseReplicator *
  49 DatabaseReplicator::open(const string & path)
  50 {
  51     LOGCALL_STATIC(DB, DatabaseReplicator *, "DatabaseReplicator::open", path);
  52
  53 #ifdef XAPIAN_HAS_CHERT_BACKEND
  54     if (file_exists(path + "/iamchert")) {
  55 # ifdef XAPIAN_HAS_REMOTE_BACKEND
  56         return new ChertDatabaseReplicator(path);
  57 # else
  58         throw FeatureUnavailableError("Replication disabled");
  59 # endif
  60     }
  61 #endif
  62
  63 #ifdef XAPIAN_HAS_GLASS_BACKEND
  64     if (file_exists(path + "/iamglass")) {
  65 # ifdef XAPIAN_HAS_REMOTE_BACKEND
  66         return new GlassDatabaseReplicator(path);
  67 # else
  68         throw FeatureUnavailableError("Replication disabled");
  69 # endif
  70     }
  71 #endif
  72
  73     if (file_exists(path + "/iamflint")) {
  74         throw FeatureUnavailableError("Flint backend no longer supported");
  75     }
  76
  77     if (file_exists(path + "/iambrass")) {
  78         throw FeatureUnavailableError("Brass backend no longer supported");
  79     }
  80
  81     throw DatabaseOpeningError("Couldn't detect type of database: " + path);
  82 }
  83
  84 }