1
/* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
2
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
4
* Copyright (C) 2010 Brian Aker
6
* This program is free software; you can redistribute it and/or modify
7
* it under the terms of the GNU General Public License as published by
8
* the Free Software Foundation; either version 2 of the License, or
9
* (at your option) any later version.
11
* This program is distributed in the hope that it will be useful,
12
* but WITHOUT ANY WARRANTY; without even the implied warranty of
13
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14
* GNU General Public License for more details.
16
* You should have received a copy of the GNU General Public License
17
* along with this program; if not, write to the Free Software
18
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
25
#include <sys/types.h>
27
#include <boost/foreach.hpp>
28
#include <drizzled/display.h>
29
#include <google/protobuf/io/zero_copy_stream.h>
30
#include <google/protobuf/io/zero_copy_stream_impl.h>
36
#include <drizzled/data_home.h>
37
#include <drizzled/cached_directory.h>
38
#include <drizzled/catalog/local.h>
39
#include <plugin/catalog/module.h>
44
static std::string CATALOG_OPT_EXT(".cat");
46
bool Engine::create(const drizzled::identifier::Catalog &identifier, drizzled::message::catalog::shared_ptr &message)
48
if (mkdir(identifier.getPath().c_str(), 0777) == -1)
51
if (not writeFile(identifier, message))
53
rmdir(identifier.getPath().c_str());
61
bool Engine::drop(const drizzled::identifier::Catalog &identifier)
63
std::string file(identifier.getPath());
64
file.append(1, FN_LIBCHAR);
65
file.append(CATALOG_OPT_EXT);
67
// No catalog file, no love from us.
68
if (access(file.c_str(), F_OK))
74
if (unlink(file.c_str()))
80
if (rmdir(identifier.getPath().c_str()))
82
perror(identifier.getPath().c_str());
83
//@todo If this happens, we want a report of it. For the moment I dump
84
//to stderr so I can catch it in Hudson.
85
drizzled::CachedDirectory dir(identifier.getPath());
91
void Engine::getMessages(drizzled::message::catalog::vector &messages)
96
drizzled::message::catalog::shared_ptr Engine::getMessage(const drizzled::identifier::Catalog& identifier)
98
if (drizzled::catalog::local_identifier() == identifier)
100
return drizzled::message::catalog::make_shared(identifier);
103
drizzled::message::catalog::shared_ptr message;
104
if ((message= readFile(identifier)))
110
return drizzled::message::catalog::shared_ptr();
113
void Engine::prime(drizzled::message::catalog::vector &messages)
115
bool found_local= false;
116
drizzled::CachedDirectory directory(drizzled::getFullDataHome().file_string(), drizzled::CachedDirectory::DIRECTORY, true);
117
drizzled::CachedDirectory::Entries files= directory.getEntries();
120
BOOST_FOREACH(drizzled::CachedDirectory::Entries::reference entry, files)
122
drizzled::message::catalog::shared_ptr message;
124
if (not entry->filename.compare(GLOBAL_TEMPORARY_EXT))
127
drizzled::identifier::Catalog identifier(entry->filename);
129
if (message= readFile(identifier))
131
messages.push_back(message);
133
if (drizzled::catalog::local_identifier() == identifier)
140
messages.push_back(drizzled::catalog::local()->message());
144
bool Engine::writeFile(const drizzled::identifier::Catalog &identifier, drizzled::message::catalog::shared_ptr &message)
146
char file_tmp[FN_REFLEN];
147
std::string file(identifier.getPath());
150
file.append(1, FN_LIBCHAR);
151
file.append(CATALOG_OPT_EXT);
153
snprintf(file_tmp, FN_REFLEN, "%sXXXXXX", file.c_str());
155
int fd= mkstemp(file_tmp);
167
success= message->SerializeToFileDescriptor(fd);
176
drizzled::my_error(drizzled::ER_CORRUPT_CATALOG_DEFINITION, MYF(0), file.c_str(),
177
message->InitializationErrorString().empty() ? "unknown" : message->InitializationErrorString().c_str());
182
if (unlink(file_tmp))
192
if (unlink(file_tmp))
198
if (rename(file_tmp, file.c_str()) == -1)
200
if (unlink(file_tmp))
210
drizzled::message::catalog::shared_ptr Engine::readFile(const drizzled::identifier::Catalog& identifier)
212
std::string path(identifier.getPath());
215
Pass an empty file name, and the database options file name as extension
216
to avoid table name to file name encoding.
218
path.append(1, FN_LIBCHAR);
219
path.append(CATALOG_OPT_EXT);
221
std::fstream input(path.c_str(), std::ios::in | std::ios::binary);
225
drizzled::message::catalog::shared_ptr message= drizzled::message::catalog::make_shared(identifier);
228
return drizzled::message::catalog::shared_ptr();
231
if (message->ParseFromIstream(&input))
236
drizzled::my_error(drizzled::ER_CORRUPT_CATALOG_DEFINITION, MYF(0), path.c_str(),
237
message->InitializationErrorString().empty() ? "unknown" : message->InitializationErrorString().c_str());
241
perror(path.c_str());
244
return drizzled::message::catalog::shared_ptr();
247
} /* namespace catalog */
248
} /* namespace plugin */