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lib: create mu-xapian-db, mu-config

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XapianDb is a fairly thing wrapper around Xapian, which handles locking,
exception handling and some tracking.

On top of that, Config add a configuration database for type /
introspectable configuration info.
This commit is contained in:
Dirk-Jan C. Binnema
2023-06-30 23:16:41 +03:00
parent 426c1d35d0
commit c28fde9155
5 changed files with 921 additions and 85 deletions
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85
lib/utils/mu-xapian-utils.hh
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@ -1,85 +0,0 @@
/*
** Copyright (C) 2021-2023 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
**
** 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 3, 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.
**
*/
#ifndef MU_XAPIAN_UTILS_HH__
#define MU_XAPIAN_UTILS_HH__
#include <xapian.h>
#include <glib.h>
#include "mu-result.hh"
namespace Mu {
// LCOV_EXCL_START
// avoid exception-handling boilerplate.
template <typename Func> void
xapian_try(Func&& func) noexcept
try {
func();
} catch (const Xapian::Error& xerr) {
g_critical("%s: xapian error '%s'", __func__, xerr.get_msg().c_str());
} catch (const std::runtime_error& re) {
g_critical("%s: runtime error: %s", __func__, re.what());
} catch (const std::exception& e) {
g_critical("%s: caught std::exception: %s", __func__, e.what());
} catch (...) {
g_critical("%s: caught exception", __func__);
}
template <typename Func, typename Default = std::invoke_result<Func>> auto
xapian_try(Func&& func, Default&& def) noexcept -> std::decay_t<decltype(func())>
try {
return func();
} catch (const Xapian::DocNotFoundError& xerr) {
return static_cast<Default>(def);
} catch (const Xapian::Error& xerr) {
g_warning("%s: xapian error '%s'", __func__, xerr.get_msg().c_str());
return static_cast<Default>(def);
} catch (const std::runtime_error& re) {
g_critical("%s: runtime error: %s", __func__, re.what());
return static_cast<Default>(def);
} catch (const std::exception& e) {
g_critical("%s: caught std::exception: %s", __func__, e.what());
return static_cast<Default>(def);
} catch (...) {
g_critical("%s: caught exception", __func__);
return static_cast<Default>(def);
}
template <typename Func> auto
xapian_try_result(Func&& func) noexcept -> std::decay_t<decltype(func())>
try {
return func();
} catch (const Xapian::Error& xerr) {
return Err(Error::Code::Xapian, "%s", xerr.get_error_string());
} catch (const std::runtime_error& re) {
return Err(Error::Code::Internal, "runtime error: %s", re.what());
} catch (const std::exception& e) {
return Err(Error::Code::Internal, "caught std::exception: %s", e.what());
} catch (...) {
return Err(Error::Code::Internal, "caught exception");
}
// LCOV_EXCL_STOP
} // namespace Mu
#endif /* MU_ XAPIAN_UTILS_HH__ */