133 lines
2.9 KiB
Go
133 lines
2.9 KiB
Go
package tx
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import (
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"encoding/hex"
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"encoding/json"
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"fmt"
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"net/http"
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"strconv"
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"github.com/gorilla/mux"
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"github.com/pkg/errors"
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"github.com/spf13/cobra"
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"github.com/spf13/viper"
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abci "github.com/tendermint/abci/types"
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ctypes "github.com/tendermint/tendermint/rpc/core/types"
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"github.com/cosmos/cosmos-sdk/client"
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sdk "github.com/cosmos/cosmos-sdk/types"
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"github.com/cosmos/cosmos-sdk/wire"
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)
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// Get the default command for a tx query
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func QueryTxCmd(cmdr commander) *cobra.Command {
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cmd := &cobra.Command{
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Use: "tx [hash]",
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Short: "Matches this txhash over all committed blocks",
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RunE: cmdr.queryAndPrintTx,
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}
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cmd.Flags().StringP(client.FlagNode, "n", "tcp://localhost:46657", "Node to connect to")
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// TODO: change this to false when we can
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cmd.Flags().Bool(client.FlagTrustNode, true, "Don't verify proofs for responses")
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return cmd
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}
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func (c commander) queryTx(hashHexStr string, trustNode bool) ([]byte, error) {
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hash, err := hex.DecodeString(hashHexStr)
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if err != nil {
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return nil, err
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}
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// get the node
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node, err := client.GetNode()
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if err != nil {
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return nil, err
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}
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res, err := node.Tx(hash, !trustNode)
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if err != nil {
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return nil, err
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}
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info, err := formatTxResult(c.cdc, res)
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if err != nil {
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return nil, err
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}
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return json.MarshalIndent(info, "", " ")
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}
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func formatTxResult(cdc *wire.Codec, res *ctypes.ResultTx) (txInfo, error) {
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// TODO: verify the proof if requested
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tx, err := parseTx(cdc, res.Tx)
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if err != nil {
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return txInfo{}, err
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}
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info := txInfo{
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Height: res.Height,
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Tx: tx,
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Result: res.TxResult,
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}
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return info, nil
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}
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// txInfo is used to prepare info to display
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type txInfo struct {
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Height int64 `json:"height"`
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Tx sdk.Tx `json:"tx"`
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Result abci.ResponseDeliverTx `json:"result"`
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}
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func parseTx(cdc *wire.Codec, txBytes []byte) (sdk.Tx, error) {
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var tx sdk.StdTx
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err := cdc.UnmarshalBinary(txBytes, &tx)
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if err != nil {
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return nil, err
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}
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return tx, nil
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}
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// CMD
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// command to query for a transaction
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func (c commander) queryAndPrintTx(cmd *cobra.Command, args []string) error {
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if len(args) != 1 || len(args[0]) == 0 {
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return errors.New("You must provide a tx hash")
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}
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// find the key to look up the account
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hashHexStr := args[0]
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trustNode := viper.GetBool(client.FlagTrustNode)
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output, err := c.queryTx(hashHexStr, trustNode)
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if err != nil {
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return err
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}
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fmt.Println(string(output))
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return nil
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}
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// REST
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func QueryTxRequestHandler(cdc *wire.Codec) func(http.ResponseWriter, *http.Request) {
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c := commander{cdc}
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return func(w http.ResponseWriter, r *http.Request) {
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vars := mux.Vars(r)
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hashHexStr := vars["hash"]
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trustNode, err := strconv.ParseBool(r.FormValue("trust_node"))
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// trustNode defaults to true
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if err != nil {
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trustNode = true
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}
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output, err := c.queryTx(hashHexStr, trustNode)
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if err != nil {
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w.WriteHeader(500)
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w.Write([]byte(err.Error()))
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return
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}
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w.Write(output)
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}
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}
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