105 lines
2.7 KiB
C++
105 lines
2.7 KiB
C++
/*
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* Copyright 2003-2018 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include "Glue.hxx"
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#include "Registry.hxx"
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#include "Explorer.hxx"
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#include "NeighborPlugin.hxx"
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#include "Info.hxx"
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#include "config/Data.hxx"
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#include "config/Domain.hxx"
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#include "config/Block.hxx"
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#include "util/RuntimeError.hxx"
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#include <stdexcept>
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NeighborGlue::NeighborGlue() noexcept {}
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NeighborGlue::~NeighborGlue() noexcept {}
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static std::unique_ptr<NeighborExplorer>
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CreateNeighborExplorer(EventLoop &loop, NeighborListener &listener,
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const ConfigBlock &block)
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{
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const char *plugin_name = block.GetBlockValue("plugin");
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if (plugin_name == nullptr)
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throw std::runtime_error("Missing \"plugin\" configuration");
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const NeighborPlugin *plugin = GetNeighborPluginByName(plugin_name);
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if (plugin == nullptr)
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throw FormatRuntimeError("No such neighbor plugin: %s",
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plugin_name);
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return plugin->create(loop, listener, block);
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}
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void
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NeighborGlue::Init(const ConfigData &config,
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EventLoop &loop, NeighborListener &listener)
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{
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for (const auto &block : config.GetBlockList(ConfigBlockOption::NEIGHBORS)) {
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block.SetUsed();
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try {
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explorers.emplace_front(CreateNeighborExplorer(loop,
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listener,
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block));
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} catch (...) {
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std::throw_with_nested(FormatRuntimeError("Line %i: ",
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block.line));
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}
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}
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}
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void
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NeighborGlue::Open()
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{
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for (auto i = explorers.begin(), end = explorers.end();
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i != end; ++i) {
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try {
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i->explorer->Open();
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} catch (...) {
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/* roll back */
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for (auto k = explorers.begin(); k != i; ++k)
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k->explorer->Close();
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throw;
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}
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}
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}
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void
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NeighborGlue::Close() noexcept
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{
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for (auto i = explorers.begin(), end = explorers.end(); i != end; ++i)
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i->explorer->Close();
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}
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NeighborGlue::List
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NeighborGlue::GetList() const noexcept
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{
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List result;
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for (const auto &i : explorers)
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result.splice_after(result.before_begin(),
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i.explorer->GetList());
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return result;
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}
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