CValidationInterface: modify the parameter of TransactionAddedToMempool

Create a new struct `NewMempoolTransactionInfo` that will be used as the new parameter of
`TransactionAddedToMempool` callback.

src/kernel/mempool_entry.h

@@ -208,4 +208,33 @@ struct RemovedMempoolTransactionInfo {
         : info{entry.GetSharedTx(), entry.GetFee(), entry.GetTxSize(), entry.GetHeight()} {}
 };
 
+struct NewMempoolTransactionInfo {
+    TransactionInfo info;
+    /*
+     * This boolean indicates whether the transaction was added
+     * without enforcing mempool fee limits.
+     */
+    const bool m_from_disconnected_block;
+    /* This boolean indicates whether the transaction is part of a package. */
+    const bool m_submitted_in_package;
+    /*
+     * This boolean indicates whether the blockchain is up to date when the
+     * transaction is added to the mempool.
+     */
+    const bool m_chainstate_is_current;
+    /* Indicates whether the transaction has unconfirmed parents. */
+    const bool m_has_no_mempool_parents;
+
+    explicit NewMempoolTransactionInfo(const CTransactionRef& tx, const CAmount& fee,
+                                       const int64_t vsize, const unsigned int height,
+                                       const bool from_disconnected_block, const bool submitted_in_package,
+                                       const bool chainstate_is_current,
+                                       const bool has_no_mempool_parents)
+        : info{tx, fee, vsize, height},
+          m_from_disconnected_block{from_disconnected_block},
+          m_submitted_in_package{submitted_in_package},
+          m_chainstate_is_current{chainstate_is_current},
+          m_has_no_mempool_parents{has_no_mempool_parents} {}
+};
+
 #endif // BITCOIN_KERNEL_MEMPOOL_ENTRY_H

src/node/interfaces.cpp

@@ -428,9 +428,9 @@ public:
     explicit NotificationsProxy(std::shared_ptr<Chain::Notifications> notifications)
         : m_notifications(std::move(notifications)) {}
     virtual ~NotificationsProxy() = default;
-    void TransactionAddedToMempool(const CTransactionRef& tx, uint64_t mempool_sequence) override
+    void TransactionAddedToMempool(const NewMempoolTransactionInfo& tx, uint64_t mempool_sequence) override
     {
-        m_notifications->transactionAddedToMempool(tx);
+        m_notifications->transactionAddedToMempool(tx.info.m_tx);
     }
     void TransactionRemovedFromMempool(const CTransactionRef& tx, MemPoolRemovalReason reason, uint64_t mempool_sequence) override
     {

src/test/fuzz/package_eval.cpp

@@ -55,13 +55,13 @@ struct OutpointsUpdater final : public CValidationInterface {
     explicit OutpointsUpdater(std::set<COutPoint>& r)
         : m_mempool_outpoints{r} {}
 
-    void TransactionAddedToMempool(const CTransactionRef& tx, uint64_t /* mempool_sequence */) override
+    void TransactionAddedToMempool(const NewMempoolTransactionInfo& tx, uint64_t /* mempool_sequence */) override
     {
         // for coins spent we always want to be able to rbf so they're not removed
 
         // outputs from this tx can now be spent
-        for (uint32_t index{0}; index < tx->vout.size(); ++index) {
-            m_mempool_outpoints.insert(COutPoint{tx->GetHash(), index});
+        for (uint32_t index{0}; index < tx.info.m_tx->vout.size(); ++index) {
+            m_mempool_outpoints.insert(COutPoint{tx.info.m_tx->GetHash(), index});
         }
     }
 
@@ -85,10 +85,10 @@ struct TransactionsDelta final : public CValidationInterface {
     explicit TransactionsDelta(std::set<CTransactionRef>& a)
         : m_added{a} {}
 
-    void TransactionAddedToMempool(const CTransactionRef& tx, uint64_t /* mempool_sequence */) override
+    void TransactionAddedToMempool(const NewMempoolTransactionInfo& tx, uint64_t /* mempool_sequence */) override
     {
         // Transactions may be entered and booted any number of times
-        m_added.insert(tx);
+        m_added.insert(tx.info.m_tx);
     }
 
     void TransactionRemovedFromMempool(const CTransactionRef& tx, MemPoolRemovalReason reason, uint64_t /* mempool_sequence */) override

src/test/fuzz/tx_pool.cpp

@@ -59,9 +59,9 @@ struct TransactionsDelta final : public CValidationInterface {
     explicit TransactionsDelta(std::set<CTransactionRef>& r, std::set<CTransactionRef>& a)
         : m_removed{r}, m_added{a} {}
 
-    void TransactionAddedToMempool(const CTransactionRef& tx, uint64_t /* mempool_sequence */) override
+    void TransactionAddedToMempool(const NewMempoolTransactionInfo& tx, uint64_t /* mempool_sequence */) override
     {
-        Assert(m_added.insert(tx).second);
+        Assert(m_added.insert(tx.info.m_tx).second);
     }
 
     void TransactionRemovedFromMempool(const CTransactionRef& tx, MemPoolRemovalReason reason, uint64_t /* mempool_sequence */) override

src/validation.cpp

@@ -1222,7 +1222,13 @@ bool MemPoolAccept::SubmitPackage(const ATMPArgs& args, std::vector<Workspace>&
         results.emplace(ws.m_ptx->GetWitnessHash(),
                         MempoolAcceptResult::Success(std::move(ws.m_replaced_transactions), ws.m_vsize,
                                          ws.m_base_fees, effective_feerate, effective_feerate_wtxids));
-        GetMainSignals().TransactionAddedToMempool(ws.m_ptx, m_pool.GetAndIncrementSequence());
+        const CTransaction& tx = *ws.m_ptx;
+        const auto tx_info = NewMempoolTransactionInfo(ws.m_ptx, ws.m_base_fees,
+                                                       ws.m_vsize, ws.m_entry->GetHeight(),
+                                                       args.m_bypass_limits, args.m_package_submission,
+                                                       IsCurrentForFeeEstimation(m_active_chainstate),
+                                                       m_pool.HasNoInputsOf(tx));
+        GetMainSignals().TransactionAddedToMempool(tx_info, m_pool.GetAndIncrementSequence());
     }
     return all_submitted;
 }
@@ -1265,7 +1271,13 @@ MempoolAcceptResult MemPoolAccept::AcceptSingleTransaction(const CTransactionRef
         return MempoolAcceptResult::FeeFailure(ws.m_state, CFeeRate(ws.m_modified_fees, ws.m_vsize), {ws.m_ptx->GetWitnessHash()});
     }
 
-    GetMainSignals().TransactionAddedToMempool(ptx, m_pool.GetAndIncrementSequence());
+    const CTransaction& tx = *ws.m_ptx;
+    const auto tx_info = NewMempoolTransactionInfo(ws.m_ptx, ws.m_base_fees,
+                                                   ws.m_vsize, ws.m_entry->GetHeight(),
+                                                   args.m_bypass_limits, args.m_package_submission,
+                                                   IsCurrentForFeeEstimation(m_active_chainstate),
+                                                   m_pool.HasNoInputsOf(tx));
+    GetMainSignals().TransactionAddedToMempool(tx_info, m_pool.GetAndIncrementSequence());
 
     return MempoolAcceptResult::Success(std::move(ws.m_replaced_transactions), ws.m_vsize, ws.m_base_fees,
                                         effective_feerate, single_wtxid);

src/validationinterface.cpp

@@ -206,13 +206,14 @@ void CMainSignals::UpdatedBlockTip(const CBlockIndex *pindexNew, const CBlockInd
                           fInitialDownload);
 }
 
-void CMainSignals::TransactionAddedToMempool(const CTransactionRef& tx, uint64_t mempool_sequence) {
+void CMainSignals::TransactionAddedToMempool(const NewMempoolTransactionInfo& tx, uint64_t mempool_sequence)
+{
     auto event = [tx, mempool_sequence, this] {
         m_internals->Iterate([&](CValidationInterface& callbacks) { callbacks.TransactionAddedToMempool(tx, mempool_sequence); });
     };
     ENQUEUE_AND_LOG_EVENT(event, "%s: txid=%s wtxid=%s", __func__,
-                          tx->GetHash().ToString(),
-                          tx->GetWitnessHash().ToString());
+                          tx.info.m_tx->GetHash().ToString(),
+                          tx.info.m_tx->GetWitnessHash().ToString());
 }
 
 void CMainSignals::TransactionRemovedFromMempool(const CTransactionRef& tx, MemPoolRemovalReason reason, uint64_t mempool_sequence) {

src/validationinterface.h

@@ -22,6 +22,7 @@ class CValidationInterface;
 class CScheduler;
 enum class MemPoolRemovalReason;
 struct RemovedMempoolTransactionInfo;
+struct NewMempoolTransactionInfo;
 
 /** Register subscriber */
 void RegisterValidationInterface(CValidationInterface* callbacks);
@@ -97,7 +98,7 @@ protected:
      *
      * Called on a background thread.
      */
-    virtual void TransactionAddedToMempool(const CTransactionRef& tx, uint64_t mempool_sequence) {}
+    virtual void TransactionAddedToMempool(const NewMempoolTransactionInfo& tx, uint64_t mempool_sequence) {}
 
     /**
      * Notifies listeners of a transaction leaving mempool.
@@ -210,7 +211,7 @@ public:
 
 
     void UpdatedBlockTip(const CBlockIndex *, const CBlockIndex *, bool fInitialDownload);
-    void TransactionAddedToMempool(const CTransactionRef&, uint64_t mempool_sequence);
+    void TransactionAddedToMempool(const NewMempoolTransactionInfo&, uint64_t mempool_sequence);
     void TransactionRemovedFromMempool(const CTransactionRef&, MemPoolRemovalReason, uint64_t mempool_sequence);
     void MempoolTransactionsRemovedForBlock(const std::vector<RemovedMempoolTransactionInfo>&, unsigned int nBlockHeight);
     void BlockConnected(ChainstateRole, const std::shared_ptr<const CBlock> &, const CBlockIndex *pindex);

src/zmq/zmqnotificationinterface.cpp

@@ -6,6 +6,7 @@
 
 #include <common/args.h>
 #include <kernel/chain.h>
+#include <kernel/mempool_entry.h>
 #include <logging.h>
 #include <primitives/block.h>
 #include <primitives/transaction.h>
@@ -152,9 +153,9 @@ void CZMQNotificationInterface::UpdatedBlockTip(const CBlockIndex *pindexNew, co
     });
 }
 
-void CZMQNotificationInterface::TransactionAddedToMempool(const CTransactionRef& ptx, uint64_t mempool_sequence)
+void CZMQNotificationInterface::TransactionAddedToMempool(const NewMempoolTransactionInfo& ptx, uint64_t mempool_sequence)
 {
-    const CTransaction& tx = *ptx;
+    const CTransaction& tx = *(ptx.info.m_tx);
 
     TryForEachAndRemoveFailed(notifiers, [&tx, mempool_sequence](CZMQAbstractNotifier* notifier) {
         return notifier->NotifyTransaction(tx) && notifier->NotifyTransactionAcceptance(tx, mempool_sequence);

src/zmq/zmqnotificationinterface.h

@@ -16,6 +16,7 @@
 class CBlock;
 class CBlockIndex;
 class CZMQAbstractNotifier;
+struct NewMempoolTransactionInfo;
 
 class CZMQNotificationInterface final : public CValidationInterface
 {
@@ -31,7 +32,7 @@ protected:
     void Shutdown();
 
     // CValidationInterface
-    void TransactionAddedToMempool(const CTransactionRef& tx, uint64_t mempool_sequence) override;
+    void TransactionAddedToMempool(const NewMempoolTransactionInfo& tx, uint64_t mempool_sequence) override;
     void TransactionRemovedFromMempool(const CTransactionRef& tx, MemPoolRemovalReason reason, uint64_t mempool_sequence) override;
     void BlockConnected(ChainstateRole role, const std::shared_ptr<const CBlock>& pblock, const CBlockIndex* pindexConnected) override;
     void BlockDisconnected(const std::shared_ptr<const CBlock>& pblock, const CBlockIndex* pindexDisconnected) override;