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transactions.go
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transactions.go
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package flowcontext
import (
"time"
"github.com/sedraxnet/sedrax/app/appmessage"
"github.com/sedraxnet/sedrax/domain/consensus/model/externalapi"
"github.com/sedraxnet/sedrax/domain/consensus/utils/consensushashing"
)
// TransactionIDPropagationInterval is the interval between transaction IDs propagations
const TransactionIDPropagationInterval = 500 * time.Millisecond
// AddTransaction adds transaction to the mempool and propagates it.
func (f *FlowContext) AddTransaction(tx *externalapi.DomainTransaction, allowOrphan bool) error {
acceptedTransactions, err := f.Domain().MiningManager().ValidateAndInsertTransaction(tx, true, allowOrphan)
if err != nil {
return err
}
acceptedTransactionIDs := consensushashing.TransactionIDs(acceptedTransactions)
return f.EnqueueTransactionIDsForPropagation(acceptedTransactionIDs)
}
func (f *FlowContext) shouldRebroadcastTransactions() bool {
const rebroadcastInterval = 30 * time.Second
return time.Since(f.lastRebroadcastTime) > rebroadcastInterval
}
// SharedRequestedTransactions returns a *transactionrelay.SharedRequestedTransactions for sharing
// data about requested transactions between different peers.
func (f *FlowContext) SharedRequestedTransactions() *SharedRequestedTransactions {
return f.sharedRequestedTransactions
}
// OnTransactionAddedToMempool notifies the handler function that a transaction
// has been added to the mempool
func (f *FlowContext) OnTransactionAddedToMempool() {
if f.onTransactionAddedToMempoolHandler != nil {
f.onTransactionAddedToMempoolHandler()
}
}
// EnqueueTransactionIDsForPropagation add the given transactions IDs to a set of IDs to
// propagate. The IDs will be broadcast to all peers within a single transaction Inv message.
// The broadcast itself may happen only during a subsequent call to this method
func (f *FlowContext) EnqueueTransactionIDsForPropagation(transactionIDs []*externalapi.DomainTransactionID) error {
f.transactionIDPropagationLock.Lock()
defer f.transactionIDPropagationLock.Unlock()
f.transactionIDsToPropagate = append(f.transactionIDsToPropagate, transactionIDs...)
return f.maybePropagateTransactions()
}
func (f *FlowContext) maybePropagateTransactions() error {
if time.Since(f.lastTransactionIDPropagationTime) < TransactionIDPropagationInterval &&
len(f.transactionIDsToPropagate) < appmessage.MaxInvPerTxInvMsg {
return nil
}
for len(f.transactionIDsToPropagate) > 0 {
transactionIDsToBroadcast := f.transactionIDsToPropagate
if len(transactionIDsToBroadcast) > appmessage.MaxInvPerTxInvMsg {
transactionIDsToBroadcast = f.transactionIDsToPropagate[:len(transactionIDsToBroadcast)]
}
log.Debugf("Transaction propagation: broadcasting %d transactions", len(transactionIDsToBroadcast))
inv := appmessage.NewMsgInvTransaction(transactionIDsToBroadcast)
err := f.Broadcast(inv)
if err != nil {
return err
}
f.transactionIDsToPropagate = f.transactionIDsToPropagate[len(transactionIDsToBroadcast):]
}
f.lastTransactionIDPropagationTime = time.Now()
return nil
}