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/*
* Copyright (C) 2021 Codership Oy <info@codership.com>
*
* This file is part of wsrep-lib.
*
* Wsrep-lib 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 2 of the License, or
* (at your option) any later version.
*
* Wsrep-lib 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 wsrep-lib. If not, see <https://www.gnu.org/licenses/>.
*/
#include "wsrep/provider_options.hpp"
#include "config_service_v1.hpp"
#include "wsrep/logger.hpp"
#include <algorithm>
#include <cassert>
#include <cctype>
#include <cstring>
/**
* Provider options string separators.
*/
struct provider_options_sep
{
/** Parameter separator. */
char param{ ';' };
/** Key value separator. */
char key_value{ '=' };
};
// Replace dots in option name with underscores
static void sanitize_name(std::string& name)
{
std::transform(name.begin(), name.end(), name.begin(),
[](std::string::value_type c) {
if (c == '.')
return '_';
return c;
});
}
bool wsrep::operator==(const wsrep::provider_options::option& left,
const wsrep::provider_options::option& right)
{
return (std::strcmp(left.name(), right.name()) == 0);
}
// wsrep-API lacks better error code for not found, and this is
// what Galera returns when parameter is not recogized, so we
// got with it.
static enum wsrep::provider::status not_found_error{
wsrep::provider::error_warning
};
wsrep::provider_options::option::option()
: name_{}
, real_name_{}
, value_{}
, default_value_{}
, flags_{ 0 }
{
}
wsrep::provider_options::option::option(
const std::string& name,
std::unique_ptr<wsrep::provider_options::option_value> value,
std::unique_ptr<wsrep::provider_options::option_value> default_value,
int flags)
: name_{ name }
, real_name_{ name }
, value_{ std::move(value) }
, default_value_{ std::move(default_value) }
, flags_{ flags }
{
sanitize_name(name_);
}
void wsrep::provider_options::option::update_value(
std::unique_ptr<wsrep::provider_options::option_value> value)
{
value_ = std::move(value);
}
wsrep::provider_options::option::~option() {}
wsrep::provider_options::provider_options(wsrep::provider& provider)
: provider_(provider)
, options_()
{
}
enum wsrep::provider::status wsrep::provider_options::initial_options()
{
options_.clear();
if (config_service_v1_fetch(provider_, this))
{
return wsrep::provider::error_not_implemented;
}
else
{
return wsrep::provider::success;
}
}
const wsrep::provider_options::option*
wsrep::provider_options::get_option(const std::string& name) const
{
auto ret(options_.find(name));
if (ret == options_.end())
{
return nullptr;
}
return ret->second.get();
}
enum wsrep::provider::status wsrep::provider_options::set(
const std::string& name,
std::unique_ptr<wsrep::provider_options::option_value> value)
{
auto option(options_.find(name));
if (option == options_.end())
{
return not_found_error;
}
provider_options_sep sep;
auto ret(provider_.options(std::string(option->second->real_name())
+ sep.key_value + value->as_string()
+ sep.param));
if (ret == provider::success)
{
option->second->update_value(std::move(value));
}
return ret;
}
enum wsrep::provider::status wsrep::provider_options::set_default(
const std::string& name,
std::unique_ptr<wsrep::provider_options::option_value> value,
std::unique_ptr<wsrep::provider_options::option_value> default_value,
int flags)
{
auto found(options_.find(name));
auto opt(std::unique_ptr<provider_options::option>(
new option{ name, std::move(value), std::move(default_value), flags }));
if (found != options_.end())
{
assert(0);
return wsrep::provider::error_not_allowed;
}
options_.emplace(std::string(opt->name()), std::move(opt));
return wsrep::provider::success;
}
void wsrep::provider_options::for_each(const std::function<void(option*)>& fn)
{
std::for_each(
options_.begin(), options_.end(),
[&fn](const options_map::value_type& opt) { fn(opt.second.get()); });
}
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