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152 lines
5.0 KiB
152 lines
5.0 KiB
package core
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import (
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"context"
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"fmt"
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"time"
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"github.com/pkg/errors"
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abci "github.com/tendermint/tendermint/abci/types"
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mempl "github.com/tendermint/tendermint/mempool"
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ctypes "github.com/tendermint/tendermint/rpc/core/types"
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rpctypes "github.com/tendermint/tendermint/rpc/lib/types"
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"github.com/tendermint/tendermint/types"
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)
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//-----------------------------------------------------------------------------
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// NOTE: tx should be signed, but this is only checked at the app level (not by Tendermint!)
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// BroadcastTxAsync returns right away, with no response. Does not wait for
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// CheckTx nor DeliverTx results.
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// More: https://tendermint.com/rpc/#/Tx/broadcast_tx_async
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func BroadcastTxAsync(ctx *rpctypes.Context, tx types.Tx) (*ctypes.ResultBroadcastTx, error) {
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err := mempool.CheckTx(tx, nil, mempl.TxInfo{})
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if err != nil {
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return nil, err
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}
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return &ctypes.ResultBroadcastTx{Hash: tx.Hash()}, nil
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}
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// BroadcastTxSync returns with the response from CheckTx. Does not wait for
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// DeliverTx result.
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// More: https://tendermint.com/rpc/#/Tx/broadcast_tx_sync
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func BroadcastTxSync(ctx *rpctypes.Context, tx types.Tx) (*ctypes.ResultBroadcastTx, error) {
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resCh := make(chan *abci.Response, 1)
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err := mempool.CheckTx(tx, func(res *abci.Response) {
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resCh <- res
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}, mempl.TxInfo{})
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if err != nil {
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return nil, err
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}
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res := <-resCh
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r := res.GetCheckTx()
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return &ctypes.ResultBroadcastTx{
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Code: r.Code,
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Data: r.Data,
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Log: r.Log,
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Hash: tx.Hash(),
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}, nil
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}
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// BroadcastTxCommit returns with the responses from CheckTx and DeliverTx.
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// More: https://tendermint.com/rpc/#/Tx/broadcast_tx_commit
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func BroadcastTxCommit(ctx *rpctypes.Context, tx types.Tx) (*ctypes.ResultBroadcastTxCommit, error) {
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subscriber := ctx.RemoteAddr()
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if eventBus.NumClients() >= config.MaxSubscriptionClients {
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return nil, fmt.Errorf("max_subscription_clients %d reached", config.MaxSubscriptionClients)
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} else if eventBus.NumClientSubscriptions(subscriber) >= config.MaxSubscriptionsPerClient {
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return nil, fmt.Errorf("max_subscriptions_per_client %d reached", config.MaxSubscriptionsPerClient)
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}
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// Subscribe to tx being committed in block.
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subCtx, cancel := context.WithTimeout(ctx.Context(), SubscribeTimeout)
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defer cancel()
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q := types.EventQueryTxFor(tx)
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deliverTxSub, err := eventBus.Subscribe(subCtx, subscriber, q)
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if err != nil {
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err = errors.Wrap(err, "failed to subscribe to tx")
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logger.Error("Error on broadcast_tx_commit", "err", err)
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return nil, err
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}
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defer eventBus.Unsubscribe(context.Background(), subscriber, q)
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// Broadcast tx and wait for CheckTx result
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checkTxResCh := make(chan *abci.Response, 1)
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err = mempool.CheckTx(tx, func(res *abci.Response) {
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checkTxResCh <- res
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}, mempl.TxInfo{})
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if err != nil {
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logger.Error("Error on broadcastTxCommit", "err", err)
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return nil, fmt.Errorf("Error on broadcastTxCommit: %v", err)
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}
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checkTxResMsg := <-checkTxResCh
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checkTxRes := checkTxResMsg.GetCheckTx()
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if checkTxRes.Code != abci.CodeTypeOK {
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return &ctypes.ResultBroadcastTxCommit{
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CheckTx: *checkTxRes,
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DeliverTx: abci.ResponseDeliverTx{},
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Hash: tx.Hash(),
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}, nil
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}
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// Wait for the tx to be included in a block or timeout.
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select {
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case msg := <-deliverTxSub.Out(): // The tx was included in a block.
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deliverTxRes := msg.Data().(types.EventDataTx)
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return &ctypes.ResultBroadcastTxCommit{
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CheckTx: *checkTxRes,
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DeliverTx: deliverTxRes.Result,
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Hash: tx.Hash(),
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Height: deliverTxRes.Height,
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}, nil
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case <-deliverTxSub.Cancelled():
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var reason string
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if deliverTxSub.Err() == nil {
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reason = "Tendermint exited"
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} else {
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reason = deliverTxSub.Err().Error()
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}
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err = fmt.Errorf("deliverTxSub was cancelled (reason: %s)", reason)
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logger.Error("Error on broadcastTxCommit", "err", err)
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return &ctypes.ResultBroadcastTxCommit{
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CheckTx: *checkTxRes,
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DeliverTx: abci.ResponseDeliverTx{},
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Hash: tx.Hash(),
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}, err
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case <-time.After(config.TimeoutBroadcastTxCommit):
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err = errors.New("Timed out waiting for tx to be included in a block")
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logger.Error("Error on broadcastTxCommit", "err", err)
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return &ctypes.ResultBroadcastTxCommit{
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CheckTx: *checkTxRes,
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DeliverTx: abci.ResponseDeliverTx{},
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Hash: tx.Hash(),
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}, err
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}
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}
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// UnconfirmedTxs gets unconfirmed transactions (maximum ?limit entries)
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// including their number.
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// More: https://tendermint.com/rpc/#/Info/unconfirmed_txs
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func UnconfirmedTxs(ctx *rpctypes.Context, limit int) (*ctypes.ResultUnconfirmedTxs, error) {
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// reuse per_page validator
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limit = validatePerPage(limit)
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txs := mempool.ReapMaxTxs(limit)
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return &ctypes.ResultUnconfirmedTxs{
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Count: len(txs),
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Total: mempool.Size(),
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TotalBytes: mempool.TxsBytes(),
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Txs: txs}, nil
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}
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// NumUnconfirmedTxs gets number of unconfirmed transactions.
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// More: https://tendermint.com/rpc/#/Info/num_unconfirmed_txs
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func NumUnconfirmedTxs(ctx *rpctypes.Context) (*ctypes.ResultUnconfirmedTxs, error) {
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return &ctypes.ResultUnconfirmedTxs{
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Count: mempool.Size(),
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Total: mempool.Size(),
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TotalBytes: mempool.TxsBytes()}, nil
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}
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