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") }