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// Copyright (c) 2015-2020 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef BITCOIN_ZMQ_ZMQABSTRACTNOTIFIER_H
#define BITCOIN_ZMQ_ZMQABSTRACTNOTIFIER_H
#include <memory>
#include <string>
class CBlockIndex;
class CTransaction;
class CZMQAbstractNotifier;
using CZMQNotifierFactory = std::unique_ptr<CZMQAbstractNotifier> (*)();
class CZMQAbstractNotifier
{
public:
static const int DEFAULT_ZMQ_SNDHWM {1000};
CZMQAbstractNotifier() : psocket(nullptr), outbound_message_high_water_mark(DEFAULT_ZMQ_SNDHWM) { }
virtual ~CZMQAbstractNotifier();
template <typename T>
static std::unique_ptr<CZMQAbstractNotifier> Create()
{
return std::make_unique<T>();
}
std::string GetType() const { return type; }
void SetType(const std::string &t) { type = t; }
std::string GetAddress() const { return address; }
void SetAddress(const std::string &a) { address = a; }
int GetOutboundMessageHighWaterMark() const { return outbound_message_high_water_mark; }
void SetOutboundMessageHighWaterMark(const int sndhwm) {
if (sndhwm >= 0) {
outbound_message_high_water_mark = sndhwm;
}
}
virtual bool Initialize(void *pcontext) = 0;
virtual void Shutdown() = 0;
// Notifies of ConnectTip result, i.e., new active tip only
virtual bool NotifyBlock(const CBlockIndex *pindex);
// Notifies of every block connection
virtual bool NotifyBlockConnect(const CBlockIndex *pindex);
// Notifies of every block disconnection
virtual bool NotifyBlockDisconnect(const CBlockIndex *pindex);
// Notifies of every mempool acceptance
virtual bool NotifyTransactionAcceptance(const CTransaction &transaction, uint64_t mempool_sequence);
// Notifies of every mempool removal, except inclusion in blocks
virtual bool NotifyTransactionRemoval(const CTransaction &transaction, uint64_t mempool_sequence);
// Notifies of transactions added to mempool or appearing in blocks
virtual bool NotifyTransaction(const CTransaction &transaction);
protected:
void *psocket;
std::string type;
std::string address;
int outbound_message_high_water_mark; // aka SNDHWM
};
#endif // BITCOIN_ZMQ_ZMQABSTRACTNOTIFIER_H
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