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node_base.hpp
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node_base.hpp
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// Copyright (C) 2018 Bluzelle
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License, version 3,
// as published by the Free Software Foundation.
//
// 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#pragma once
#include <boost/asio.hpp>
#include <node/session_base.hpp>
#include <json/json.h>
#include <proto/bluzelle.pb.h>
namespace bzn
{
class node_base
{
public:
virtual ~node_base() = default;
/**
* Register for a callback to be execute when a certain message type arrives
* @param msg_type message type (crud, raft etc.)
* @param msg_handler callback
* @return true if registration succeeded
*/
virtual bool register_for_message(const std::string& msg_type, bzn::message_handler msg_handler) = 0;
/**
* Register for a callback to be execute when a certain message type arrives
* @param msg_type message type (crud, raft etc.)
* @param msg_handler callback
* @return true if registration succeeded
*/
virtual bool register_for_message(const bzn_envelope::PayloadCase type, bzn::protobuf_handler msg_handler) = 0;
/**
* Start server's listener etc.
*/
virtual void start() = 0;
/**
* Convenience method to connect and send a message to a node
* @param ep host to send the message to
* @param msg message to send
*/
virtual void send_message(const boost::asio::ip::tcp::endpoint& ep, std::shared_ptr<bzn::json_message> msg) = 0;
/**
* Convenience method to connect and send a message to a node. Will set sender and signature fields as appropriate.
* @param ep host to send the message to
* @param msg message to send
*/
virtual void send_message_str(const boost::asio::ip::tcp::endpoint& ep, std::shared_ptr<bzn::encoded_message> msg) = 0;
};
} // bzn