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package core
import (
"context"
"errors"
"fmt"
"sort"
tmquery "github.com/tendermint/tendermint/internal/pubsub/query"
"github.com/tendermint/tendermint/internal/state/indexer"
"github.com/tendermint/tendermint/libs/bytes"
tmmath "github.com/tendermint/tendermint/libs/math"
"github.com/tendermint/tendermint/rpc/coretypes"
"github.com/tendermint/tendermint/types"
)
// Tx allows you to query the transaction results. `nil` could mean the
// transaction is in the mempool, invalidated, or was not sent in the first
// place.
// More: https://docs.tendermint.com/master/rpc/#/Info/tx
func (env *Environment) Tx(ctx context.Context, hash bytes.HexBytes, prove bool) (*coretypes.ResultTx, error) {
// if index is disabled, return error
// N.B. The hash parameter is HexBytes so that the reflective parameter
// decoding logic in the HTTP service will correctly translate from JSON.
// See https://github.com/tendermint/tendermint/issues/6802 for context.
if !indexer.KVSinkEnabled(env.EventSinks) {
return nil, errors.New("transaction querying is disabled due to no kvEventSink")
}
for _, sink := range env.EventSinks {
if sink.Type() == indexer.KV {
r, err := sink.GetTxByHash(hash)
if r == nil {
return nil, fmt.Errorf("tx (%X) not found, err: %w", hash, err)
}
height := r.Height
index := r.Index
var proof types.TxProof
if prove {
block := env.BlockStore.LoadBlock(height)
proof = block.Data.Txs.Proof(int(index)) // XXX: overflow on 32-bit machines
}
return &coretypes.ResultTx{
Hash: hash,
Height: height,
Index: index,
TxResult: r.Result,
Tx: r.Tx,
Proof: proof,
}, nil
}
}
return nil, fmt.Errorf("transaction querying is disabled on this node due to the KV event sink being disabled")
}
// TxSearch allows you to query for multiple transactions results. It returns a
// list of transactions (maximum ?per_page entries) and the total count.
// More: https://docs.tendermint.com/master/rpc/#/Info/tx_search
func (env *Environment) TxSearch(
ctx context.Context,
query string,
prove bool,
pagePtr, perPagePtr *int,
orderBy string,
) (*coretypes.ResultTxSearch, error) {
if !indexer.KVSinkEnabled(env.EventSinks) {
return nil, fmt.Errorf("transaction searching is disabled due to no kvEventSink")
} else if len(query) > maxQueryLength {
return nil, errors.New("maximum query length exceeded")
}
q, err := tmquery.New(query)
if err != nil {
return nil, err
}
for _, sink := range env.EventSinks {
if sink.Type() == indexer.KV {
results, err := sink.SearchTxEvents(ctx, q)
if err != nil {
return nil, err
}
// sort results (must be done before pagination)
switch orderBy {
case "desc", "":
sort.Slice(results, func(i, j int) bool {
if results[i].Height == results[j].Height {
return results[i].Index > results[j].Index
}
return results[i].Height > results[j].Height
})
case "asc":
sort.Slice(results, func(i, j int) bool {
if results[i].Height == results[j].Height {
return results[i].Index < results[j].Index
}
return results[i].Height < results[j].Height
})
default:
return nil, fmt.Errorf("expected order_by to be either `asc` or `desc` or empty: %w", coretypes.ErrInvalidRequest)
}
// paginate results
totalCount := len(results)
perPage := env.validatePerPage(perPagePtr)
page, err := validatePage(pagePtr, perPage, totalCount)
if err != nil {
return nil, err
}
skipCount := validateSkipCount(page, perPage)
pageSize := tmmath.MinInt(perPage, totalCount-skipCount)
apiResults := make([]*coretypes.ResultTx, 0, pageSize)
for i := skipCount; i < skipCount+pageSize; i++ {
r := results[i]
var proof types.TxProof
if prove {
block := env.BlockStore.LoadBlock(r.Height)
proof = block.Data.Txs.Proof(int(r.Index)) // XXX: overflow on 32-bit machines
}
apiResults = append(apiResults, &coretypes.ResultTx{
Hash: types.Tx(r.Tx).Hash(),
Height: r.Height,
Index: r.Index,
TxResult: r.Result,
Tx: r.Tx,
Proof: proof,
})
}
return &coretypes.ResultTxSearch{Txs: apiResults, TotalCount: totalCount}, nil
}
}
return nil, fmt.Errorf("transaction searching is disabled on this node due to the KV event sink being disabled")
}