PluginRegistry.h

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#pragma once
#include "catapult/exceptions.h"
#include <memory>
#include <vector>
 
namespace catapult { namespace model {
 
    template<typename TPlugin, typename TPluginKey>
    class PluginRegistry {
    public:
        size_t size() const {
            return m_plugins.size();
        }
 
        const TPlugin* findPlugin(TPluginKey type) const {
            auto iter = std::find_if(m_plugins.cbegin(), m_plugins.cend(), [type](const auto& pPlugin) {
                return pPlugin->type() == type;
            });
 
            return m_plugins.cend() == iter ? nullptr : iter->get();
        }
 
    public:
        void registerPlugin(std::unique_ptr<const TPlugin>&& pPlugin) {
            if (findPlugin(pPlugin->type()))
                CATAPULT_THROW_INVALID_ARGUMENT_1("plugin has already been registered with type", pPlugin->type());
 
            m_plugins.push_back(std::move(pPlugin));
        }
 
    private:
        std::vector<std::unique_ptr<const TPlugin>> m_plugins;
    };
}}