package core import ( "errors" "fmt" "sort" tmmath "github.com/tendermint/tendermint/libs/math" tmquery "github.com/tendermint/tendermint/libs/pubsub/query" ctypes "github.com/tendermint/tendermint/rpc/core/types" rpctypes "github.com/tendermint/tendermint/rpc/jsonrpc/types" "github.com/tendermint/tendermint/state/txindex/null" "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 Tx(ctx *rpctypes.Context, hash []byte, prove bool) (*ctypes.ResultTx, error) { // if index is disabled, return error if _, ok := env.TxIndexer.(*null.TxIndex); ok { return nil, fmt.Errorf("transaction indexing is disabled") } r, err := env.TxIndexer.Get(hash) if err != nil { return nil, err } if r == nil { return nil, fmt.Errorf("tx (%X) not found", hash) } 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 &ctypes.ResultTx{ Hash: hash, Height: height, Index: index, TxResult: r.Result, Tx: r.Tx, Proof: proof, }, nil } // 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 TxSearch(ctx *rpctypes.Context, query string, prove bool, pagePtr, perPagePtr *int, orderBy string) ( *ctypes.ResultTxSearch, error) { // if index is disabled, return error if _, ok := env.TxIndexer.(*null.TxIndex); ok { return nil, errors.New("transaction indexing is disabled") } q, err := tmquery.New(query) if err != nil { return nil, err } results, err := env.TxIndexer.Search(ctx.Context(), 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, errors.New("expected order_by to be either `asc` or `desc` or empty") } // paginate results totalCount := len(results) perPage := 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([]*ctypes.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, &ctypes.ResultTx{ Hash: types.Tx(r.Tx).Hash(), Height: r.Height, Index: r.Index, TxResult: r.Result, Tx: r.Tx, Proof: proof, }) } return &ctypes.ResultTxSearch{Txs: apiResults, TotalCount: totalCount}, nil }