84 lines
1.9 KiB
C++
84 lines
1.9 KiB
C++
// SPDX-License-Identifier: GPL-2.0-or-later
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// Copyright The Music Player Daemon Project
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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/Block.hxx"
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#include "lib/fmt/RuntimeError.hxx"
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#include <stdexcept>
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NeighborGlue::NeighborGlue() noexcept = default;
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NeighborGlue::~NeighborGlue() noexcept = default;
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static std::unique_ptr<NeighborExplorer>
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CreateNeighborExplorer(EventLoop &loop, NeighborListener &listener,
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const char *plugin_name,
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const ConfigBlock &block)
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{
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const NeighborPlugin *plugin = GetNeighborPluginByName(plugin_name);
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if (plugin == nullptr)
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throw FmtRuntimeError("No such neighbor plugin: {:?}",
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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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config.WithEach(ConfigBlockOption::NEIGHBORS, [&, this](const auto &block){
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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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explorers.emplace_front(plugin_name,
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CreateNeighborExplorer(loop, listener,
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plugin_name,
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block));
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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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std::throw_with_nested(FmtRuntimeError("Failed to open neighblor plugin {:?}",
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i->name));
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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 & explorer : explorers)
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explorer.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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