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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
}