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package core
import (
"context"
"errors"
"fmt"
"math/rand"
"time"
abci "github.com/tendermint/tendermint/abci/types"
"github.com/tendermint/tendermint/internal/mempool"
"github.com/tendermint/tendermint/internal/state/indexer"
tmmath "github.com/tendermint/tendermint/libs/math"
"github.com/tendermint/tendermint/rpc/coretypes"
"github.com/tendermint/tendermint/types"
)
//-----------------------------------------------------------------------------
// NOTE: tx should be signed, but this is only checked at the app level (not by Tendermint!)
// BroadcastTxAsync returns right away, with no response. Does not wait for
// CheckTx nor DeliverTx results.
// More: https://docs.tendermint.com/master/rpc/#/Tx/broadcast_tx_async
func (env *Environment) BroadcastTxAsync(ctx context.Context, tx types.Tx) (*coretypes.ResultBroadcastTx, error) {
err := env.Mempool.CheckTx(ctx, tx, nil, mempool.TxInfo{})
if err != nil {
return nil, err
}
return &coretypes.ResultBroadcastTx{Hash: tx.Hash()}, nil
}
// BroadcastTxSync returns with the response from CheckTx. Does not wait for
// DeliverTx result.
// More: https://docs.tendermint.com/master/rpc/#/Tx/broadcast_tx_sync
func (env *Environment) BroadcastTxSync(ctx context.Context, tx types.Tx) (*coretypes.ResultBroadcastTx, error) {
resCh := make(chan *abci.ResponseCheckTx, 1)
err := env.Mempool.CheckTx(
ctx,
tx,
func(res *abci.ResponseCheckTx) { resCh <- res },
mempool.TxInfo{},
)
if err != nil {
return nil, err
}
r := <-resCh
return &coretypes.ResultBroadcastTx{
Code: r.Code,
Data: r.Data,
Log: r.Log,
Codespace: r.Codespace,
MempoolError: r.MempoolError,
Hash: tx.Hash(),
}, nil
}
// BroadcastTxCommit returns with the responses from CheckTx and DeliverTx.
// More: https://docs.tendermint.com/master/rpc/#/Tx/broadcast_tx_commit
func (env *Environment) BroadcastTxCommit(ctx context.Context, tx types.Tx) (*coretypes.ResultBroadcastTxCommit, error) {
resCh := make(chan *abci.ResponseCheckTx, 1)
err := env.Mempool.CheckTx(
ctx,
tx,
func(res *abci.ResponseCheckTx) { resCh <- res },
mempool.TxInfo{},
)
if err != nil {
return nil, err
}
r := <-resCh
if r.Code != abci.CodeTypeOK {
return &coretypes.ResultBroadcastTxCommit{
CheckTx: *r,
Hash: tx.Hash(),
}, fmt.Errorf("transaction encountered error (%s)", r.MempoolError)
}
if !indexer.KVSinkEnabled(env.EventSinks) {
return &coretypes.ResultBroadcastTxCommit{
CheckTx: *r,
Hash: tx.Hash(),
},
errors.New("cannot confirm transaction because kvEventSink is not enabled")
}
startAt := time.Now()
timer := time.NewTimer(0)
defer timer.Stop()
count := 0
for {
count++
select {
case <-ctx.Done():
env.Logger.Error("error on broadcastTxCommit",
"duration", time.Since(startAt),
"err", err)
return &coretypes.ResultBroadcastTxCommit{
CheckTx: *r,
Hash: tx.Hash(),
}, fmt.Errorf("timeout waiting for commit of tx %s (%s)",
tx.Hash(), time.Since(startAt))
case <-timer.C:
txres, err := env.Tx(ctx, tx.Hash(), false)
if err != nil {
jitter := 100*time.Millisecond + time.Duration(rand.Int63n(int64(time.Second))) // nolint: gosec
backoff := 100 * time.Duration(count) * time.Millisecond
timer.Reset(jitter + backoff)
continue
}
return &coretypes.ResultBroadcastTxCommit{
CheckTx: *r,
TxResult: txres.TxResult,
Hash: tx.Hash(),
Height: txres.Height,
}, nil
}
}
}
// UnconfirmedTxs gets unconfirmed transactions from the mempool in order of priority
// More: https://docs.tendermint.com/master/rpc/#/Info/unconfirmed_txs
func (env *Environment) UnconfirmedTxs(ctx context.Context, pagePtr, perPagePtr *int) (*coretypes.ResultUnconfirmedTxs, error) {
totalCount := env.Mempool.Size()
perPage := env.validatePerPage(perPagePtr)
page, err := validatePage(pagePtr, perPage, totalCount)
if err != nil {
return nil, err
}
skipCount := validateSkipCount(page, perPage)
txs := env.Mempool.ReapMaxTxs(skipCount + tmmath.MinInt(perPage, totalCount-skipCount))
result := txs[skipCount:]
return &coretypes.ResultUnconfirmedTxs{
Count: len(result),
Total: totalCount,
TotalBytes: env.Mempool.SizeBytes(),
Txs: result}, nil
}
// NumUnconfirmedTxs gets number of unconfirmed transactions.
// More: https://docs.tendermint.com/master/rpc/#/Info/num_unconfirmed_txs
func (env *Environment) NumUnconfirmedTxs(ctx context.Context) (*coretypes.ResultUnconfirmedTxs, error) {
return &coretypes.ResultUnconfirmedTxs{
Count: env.Mempool.Size(),
Total: env.Mempool.Size(),
TotalBytes: env.Mempool.SizeBytes()}, nil
}
// CheckTx checks the transaction without executing it. The transaction won't
// be added to the mempool either.
// More: https://docs.tendermint.com/master/rpc/#/Tx/check_tx
func (env *Environment) CheckTx(ctx context.Context, tx types.Tx) (*coretypes.ResultCheckTx, error) {
res, err := env.ProxyApp.CheckTx(ctx, abci.RequestCheckTx{Tx: tx})
if err != nil {
return nil, err
}
return &coretypes.ResultCheckTx{ResponseCheckTx: *res}, nil
}
func (env *Environment) RemoveTx(ctx context.Context, txkey types.TxKey) error {
return env.Mempool.RemoveTxByKey(txkey)
}