CZMQNotificationInterface Class Reference

#include <zmqnotificationinterface.h>

Inheritance diagram for CZMQNotificationInterface:

Collaboration diagram for CZMQNotificationInterface:

Public Member Functions
virtual	~CZMQNotificationInterface ()
std::list< const CZMQAbstractNotifier * >	GetActiveNotifiers () const

Static Public Member Functions
static std::unique_ptr< CZMQNotificationInterface >	Create (std::function< bool(CBlock &, const CBlockIndex &)> get_block_by_index)

Protected Member Functions
bool	Initialize ()
void	Shutdown ()
void	TransactionAddedToMempool (const NewMempoolTransactionInfo &tx, uint64_t mempool_sequence) override
	Notifies listeners of a transaction having been added to mempool. More...
void	TransactionRemovedFromMempool (const CTransactionRef &tx, MemPoolRemovalReason reason, uint64_t mempool_sequence) override
	Notifies listeners of a transaction leaving mempool. More...
void	BlockConnected (ChainstateRole role, const std::shared_ptr< const CBlock > &pblock, const CBlockIndex *pindexConnected) override
	Notifies listeners of a block being connected. More...
void	BlockDisconnected (const std::shared_ptr< const CBlock > &pblock, const CBlockIndex *pindexDisconnected) override
	Notifies listeners of a block being disconnected Provides the block that was connected. More...
void	UpdatedBlockTip (const CBlockIndex *pindexNew, const CBlockIndex *pindexFork, bool fInitialDownload) override
	Notifies listeners when the block chain tip advances. More...
Protected Member Functions inherited from CValidationInterface
	~CValidationInterface ()=default
	Protected destructor so that instances can only be deleted by derived classes. More...
virtual void	MempoolTransactionsRemovedForBlock (const std::vector< RemovedMempoolTransactionInfo > &txs_removed_for_block, unsigned int nBlockHeight)
virtual void	ChainStateFlushed (ChainstateRole role, const CBlockLocator &locator)
	Notifies listeners of the new active block chain on-disk. More...
virtual void	BlockChecked (const CBlock &, const BlockValidationState &)
	Notifies listeners of a block validation result. More...
virtual void	NewPoWValidBlock (const CBlockIndex *pindex, const std::shared_ptr< const CBlock > &block)
	Notifies listeners that a block which builds directly on our current tip has been received and connected to the headers tree, though not validated yet. More...

Private Member Functions
	CZMQNotificationInterface ()

Private Attributes
void *	pcontext {nullptr}
std::list< std::unique_ptr< CZMQAbstractNotifier > >	notifiers

Detailed Description

Definition at line 21 of file zmqnotificationinterface.h.

Constructor & Destructor Documentation

~CZMQNotificationInterface()

CZMQNotificationInterface::~CZMQNotificationInterface ( )

virtual

Definition at line 30 of file zmqnotificationinterface.cpp.

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CZMQNotificationInterface()

CZMQNotificationInterface::CZMQNotificationInterface ( )

private

Definition at line 26 of file zmqnotificationinterface.cpp.

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Member Function Documentation

BlockConnected()

void CZMQNotificationInterface::BlockConnected ( ChainstateRole  role, const std::shared_ptr< const CBlock > &  block, const CBlockIndex *  pindex  )

overrideprotectedvirtual

Notifies listeners of a block being connected.

Provides a vector of transactions evicted from the mempool as a result.

Called on a background thread.

Reimplemented from CValidationInterface.

Definition at line 175 of file zmqnotificationinterface.cpp.

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BlockDisconnected()

void CZMQNotificationInterface::BlockDisconnected ( const std::shared_ptr< const CBlock > &  block, const CBlockIndex *  pindex  )

overrideprotectedvirtual

Notifies listeners of a block being disconnected Provides the block that was connected.

Called on a background thread. Only called for the active chainstate, since background chainstates should never disconnect blocks.

Reimplemented from CValidationInterface.

Definition at line 193 of file zmqnotificationinterface.cpp.

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Create()

std::unique_ptr< CZMQNotificationInterface > CZMQNotificationInterface::Create ( std::function< bool(CBlock &, const CBlockIndex &)>  get_block_by_index )

static

Definition at line 44 of file zmqnotificationinterface.cpp.

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GetActiveNotifiers()

std::list< const CZMQAbstractNotifier * > CZMQNotificationInterface::GetActiveNotifiers

(

)

const

Definition at line 35 of file zmqnotificationinterface.cpp.

Initialize()

bool CZMQNotificationInterface::Initialize ( )

protected

Definition at line 83 of file zmqnotificationinterface.cpp.

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Shutdown()

void CZMQNotificationInterface::Shutdown ( )

protected

Definition at line 113 of file zmqnotificationinterface.cpp.

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TransactionAddedToMempool()

void CZMQNotificationInterface::TransactionAddedToMempool ( const NewMempoolTransactionInfo &  tx, uint64_t  mempool_sequence  )

overrideprotectedvirtual

Notifies listeners of a transaction having been added to mempool.

Called on a background thread.

Reimplemented from CValidationInterface.

Definition at line 156 of file zmqnotificationinterface.cpp.

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TransactionRemovedFromMempool()

void CZMQNotificationInterface::TransactionRemovedFromMempool ( const CTransactionRef &  tx, MemPoolRemovalReason  reason, uint64_t  mempool_sequence  )

overrideprotectedvirtual

Notifies listeners of a transaction leaving mempool.

This notification fires for transactions that are removed from the mempool for the following reasons:

• EXPIRY (expired from mempool after -mempoolexpiry hours)
• SIZELIMIT (removed in size limiting if the mempool exceeds -maxmempool megabytes)
• REORG (removed during a reorg)
• CONFLICT (removed because it conflicts with in-block transaction)
• REPLACED (removed due to RBF replacement)

This does not fire for transactions that are removed from the mempool because they have been included in a block. Any client that is interested in transactions removed from the mempool for inclusion in a block can learn about those transactions from the MempoolTransactionsRemovedForBlock notification.

Transactions that are removed from the mempool because they conflict with a transaction in the new block will have TransactionRemovedFromMempool events fired before the BlockConnected event is fired. If multiple blocks are connected in one step, then the ordering could be:

• TransactionRemovedFromMempool(tx1 from block A)
• TransactionRemovedFromMempool(tx2 from block A)
• TransactionRemovedFromMempool(tx1 from block B)
• TransactionRemovedFromMempool(tx2 from block B)
• BlockConnected(A)
• BlockConnected(B)

Called on a background thread.

Reimplemented from CValidationInterface.

Definition at line 165 of file zmqnotificationinterface.cpp.

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UpdatedBlockTip()

void CZMQNotificationInterface::UpdatedBlockTip ( const CBlockIndex *  pindexNew, const CBlockIndex *  pindexFork, bool  fInitialDownload  )

overrideprotectedvirtual

Notifies listeners when the block chain tip advances.

When multiple blocks are connected at once, UpdatedBlockTip will be called on the final tip but may not be called on every intermediate tip. If the latter behavior is desired, subscribe to BlockConnected() instead.

Called on a background thread. Only called for the active chainstate.

Reimplemented from CValidationInterface.

Definition at line 146 of file zmqnotificationinterface.cpp.

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Member Data Documentation

notifiers

std::list<std::unique_ptr<CZMQAbstractNotifier> > CZMQNotificationInterface::notifiers

private

Definition at line 45 of file zmqnotificationinterface.h.

pcontext

void* CZMQNotificationInterface::pcontext {nullptr}

private

Definition at line 44 of file zmqnotificationinterface.h.

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The documentation for this class was generated from the following files:

• src/zmq/zmqnotificationinterface.h
• src/zmq/zmqnotificationinterface.cpp