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200 lines
5.3 KiB
200 lines
5.3 KiB
package v1
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import (
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"time"
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"github.com/tendermint/tendermint/internal/libs/clist"
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tmsync "github.com/tendermint/tendermint/internal/libs/sync"
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"github.com/tendermint/tendermint/mempool"
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"github.com/tendermint/tendermint/types"
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)
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// WrappedTx defines a wrapper around a raw transaction with additional metadata
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// that is used for indexing.
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type WrappedTx struct {
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// tx represents the raw binary transaction data
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tx types.Tx
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// hash defines the transaction hash and the primary key used in the mempool
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hash [mempool.TxKeySize]byte
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// height defines the height at which the transaction was validated at
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height int64
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// gasWanted defines the amount of gas the transaction sender requires
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gasWanted int64
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// priority defines the transaction's priority as specified by the application
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// in the ResponseCheckTx response.
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priority int64
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// sender defines the transaction's sender as specified by the application in
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// the ResponseCheckTx response.
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sender string
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// timestamp is the time at which the node first received the transaction from
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// a peer. It is used as a second dimension is prioritizing transactions when
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// two transactions have the same priority.
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timestamp time.Time
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// peers records a mapping of all peers that sent a given transaction
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peers map[uint16]struct{}
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// heapIndex defines the index of the item in the heap
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heapIndex int
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// gossipEl references the linked-list element in the gossip index
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gossipEl *clist.CElement
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// removed marks the transaction as removed from the mempool. This is set
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// during RemoveTx and is needed due to the fact that a given existing
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// transaction in the mempool can be evicted when it is simultaneously having
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// a reCheckTx callback executed.
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removed bool
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}
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func (wtx *WrappedTx) Size() int {
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return len(wtx.tx)
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}
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// TxStore implements a thread-safe mapping of valid transaction(s).
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//
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// NOTE:
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// - Concurrent read-only access to a *WrappedTx object is OK. However, mutative
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// access is not allowed. Regardless, it is not expected for the mempool to
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// need mutative access.
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type TxStore struct {
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mtx tmsync.RWMutex
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hashTxs map[[mempool.TxKeySize]byte]*WrappedTx // primary index
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senderTxs map[string]*WrappedTx // sender is defined by the ABCI application
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}
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func NewTxStore() *TxStore {
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return &TxStore{
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senderTxs: make(map[string]*WrappedTx),
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hashTxs: make(map[[mempool.TxKeySize]byte]*WrappedTx),
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}
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}
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// Size returns the total number of transactions in the store.
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func (txs *TxStore) Size() int {
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txs.mtx.RLock()
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defer txs.mtx.RUnlock()
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return len(txs.hashTxs)
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}
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// GetAllTxs returns all the transactions currently in the store.
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func (txs *TxStore) GetAllTxs() []*WrappedTx {
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txs.mtx.RLock()
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defer txs.mtx.RUnlock()
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wTxs := make([]*WrappedTx, len(txs.hashTxs))
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i := 0
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for _, wtx := range txs.hashTxs {
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wTxs[i] = wtx
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i++
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}
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return wTxs
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}
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// GetTxBySender returns a *WrappedTx by the transaction's sender property
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// defined by the ABCI application.
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func (txs *TxStore) GetTxBySender(sender string) *WrappedTx {
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txs.mtx.RLock()
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defer txs.mtx.RUnlock()
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return txs.senderTxs[sender]
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}
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// GetTxByHash returns a *WrappedTx by the transaction's hash.
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func (txs *TxStore) GetTxByHash(hash [mempool.TxKeySize]byte) *WrappedTx {
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txs.mtx.RLock()
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defer txs.mtx.RUnlock()
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return txs.hashTxs[hash]
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}
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// IsTxRemoved returns true if a transaction by hash is marked as removed and
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// false otherwise.
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func (txs *TxStore) IsTxRemoved(hash [mempool.TxKeySize]byte) bool {
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txs.mtx.RLock()
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defer txs.mtx.RUnlock()
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wtx, ok := txs.hashTxs[hash]
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if ok {
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return wtx.removed
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}
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return false
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}
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// SetTx stores a *WrappedTx by it's hash. If the transaction also contains a
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// non-empty sender, we additionally store the transaction by the sender as
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// defined by the ABCI application.
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func (txs *TxStore) SetTx(wtx *WrappedTx) {
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txs.mtx.Lock()
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defer txs.mtx.Unlock()
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if len(wtx.sender) > 0 {
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txs.senderTxs[wtx.sender] = wtx
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}
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txs.hashTxs[mempool.TxKey(wtx.tx)] = wtx
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}
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// RemoveTx removes a *WrappedTx from the transaction store. It deletes all
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// indexes of the transaction.
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func (txs *TxStore) RemoveTx(wtx *WrappedTx) {
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txs.mtx.Lock()
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defer txs.mtx.Unlock()
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if len(wtx.sender) > 0 {
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delete(txs.senderTxs, wtx.sender)
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}
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delete(txs.hashTxs, mempool.TxKey(wtx.tx))
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wtx.removed = true
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}
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// TxHasPeer returns true if a transaction by hash has a given peer ID and false
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// otherwise. If the transaction does not exist, false is returned.
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func (txs *TxStore) TxHasPeer(hash [mempool.TxKeySize]byte, peerID uint16) bool {
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txs.mtx.RLock()
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defer txs.mtx.RUnlock()
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wtx := txs.hashTxs[hash]
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if wtx == nil {
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return false
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}
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_, ok := wtx.peers[peerID]
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return ok
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}
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// GetOrSetPeerByTxHash looks up a WrappedTx by transaction hash and adds the
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// given peerID to the WrappedTx's set of peers that sent us this transaction.
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// We return true if we've already recorded the given peer for this transaction
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// and false otherwise. If the transaction does not exist by hash, we return
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// (nil, false).
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func (txs *TxStore) GetOrSetPeerByTxHash(hash [mempool.TxKeySize]byte, peerID uint16) (*WrappedTx, bool) {
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txs.mtx.Lock()
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defer txs.mtx.Unlock()
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wtx := txs.hashTxs[hash]
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if wtx == nil {
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return nil, false
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}
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if wtx.peers == nil {
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wtx.peers = make(map[uint16]struct{})
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}
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if _, ok := wtx.peers[peerID]; ok {
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return wtx, true
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}
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wtx.peers[peerID] = struct{}{}
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return wtx, false
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}
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