145 lines
3.2 KiB
Go
145 lines
3.2 KiB
Go
package tx
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import (
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"encoding/hex"
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"fmt"
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"github.com/tendermint/tendermint/libs/common"
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"net/http"
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"github.com/gorilla/mux"
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"github.com/spf13/cobra"
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abci "github.com/tendermint/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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"github.com/cosmos/cosmos-sdk/client/context"
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"github.com/cosmos/cosmos-sdk/codec"
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sdk "github.com/cosmos/cosmos-sdk/types"
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"github.com/cosmos/cosmos-sdk/x/auth"
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)
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// QueryTxCmd implements the default command for a tx query.
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func QueryTxCmd(cdc *codec.Codec) *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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Args: cobra.ExactArgs(1),
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RunE: func(cmd *cobra.Command, args []string) error {
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// find the key to look up the account
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hashHexStr := args[0]
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cliCtx := context.NewCLIContext().WithCodec(cdc)
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output, err := queryTx(cdc, cliCtx, hashHexStr)
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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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}
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cmd.Flags().StringP(client.FlagNode, "n", "tcp://localhost:26657", "Node to connect to")
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cmd.Flags().Bool(client.FlagTrustNode, false, "Trust connected full node (don't verify proofs for responses)")
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cmd.Flags().String(client.FlagChainID, "", "Chain ID of Tendermint node")
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return cmd
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}
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func queryTx(cdc *codec.Codec, cliCtx context.CLIContext, hashHexStr string) ([]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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node, err := cliCtx.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, !cliCtx.TrustNode)
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if err != nil {
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return nil, err
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}
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if !cliCtx.TrustNode {
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err := ValidateTxResult(cliCtx, res)
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if err != nil {
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return nil, err
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}
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}
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info, err := formatTxResult(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 codec.MarshalJSONIndent(cdc, info)
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}
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// ValidateTxResult performs transaction verification
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func ValidateTxResult(cliCtx context.CLIContext, res *ctypes.ResultTx) error {
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check, err := cliCtx.Certify(res.Height)
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if err != nil {
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return err
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}
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err = res.Proof.Validate(check.Header.DataHash)
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if err != nil {
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return err
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}
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return nil
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}
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func formatTxResult(cdc *codec.Codec, res *ctypes.ResultTx) (Info, error) {
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tx, err := parseTx(cdc, res.Tx)
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if err != nil {
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return Info{}, err
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}
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return Info{
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Hash: res.Hash,
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Height: res.Height,
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Tx: tx,
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Result: res.TxResult,
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}, nil
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}
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// Info is used to prepare info to display
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type Info struct {
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Hash common.HexBytes `json:"hash"`
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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 *codec.Codec, txBytes []byte) (sdk.Tx, error) {
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var tx auth.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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// REST
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// transaction query REST handler
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func QueryTxRequestHandlerFn(cdc *codec.Codec, cliCtx context.CLIContext) http.HandlerFunc {
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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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output, err := queryTx(cdc, cliCtx, hashHexStr)
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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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