monero/include/INode.h

// Copyright (c) 2014-2015, The Monero Project
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
//    of conditions and the following disclaimer in the documentation and/or other
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers

#pragma once

#include <cstdint>
#include <system_error>

namespace CryptoNote {

class INodeObserver {
public:
  virtual void initCompleted(std::error_code result) {}

  virtual void peerCountUpdated(size_t count) {}
  virtual void lastLocalBlockHeightUpdated(uint64_t height) {}
  virtual void lastKnownBlockHeightUpdated(uint64_t height) {}

  virtual void blockchainReorganized(uint64_t height) {}
};

class INode {
public:
  virtual ~INode() = 0;
  virtual void addObserver(INodeObserver* observer) = 0;
  virtual void removeObserver(INodeObserver* observer) = 0;

  virtual void init() = 0;
  virtual void shutdown() = 0;

  virtual size_t getPeerCount() = 0;
  virtual uint64_t getLastLocalBlockHeight() = 0;
  virtual uint64_t getLastKnownBlockHeight() = 0;
};

}