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utils.go
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utils.go
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package cmd
import (
"github.com/cosmos/cosmos-sdk/client"
"github.com/cosmos/cosmos-sdk/client/tx"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/spf13/pflag"
)
// SendMsgs sends given sdk messages
func SendMsgs(clientCtx client.Context, flags *pflag.FlagSet, datagrams []sdk.Msg) (res *sdk.TxResponse, err error) {
// validate basic all the msgs
for _, msg := range datagrams {
if err := msg.ValidateBasic(); err != nil {
return res, err
}
}
return BuildAndBroadcastTx(clientCtx, flags, datagrams)
}
// BuildAndBroadcastTx takes messages and builds, signs and marshals a sdk.Tx to prepare it for broadcast
func BuildAndBroadcastTx(clientCtx client.Context, flags *pflag.FlagSet, msgs []sdk.Msg) (*sdk.TxResponse, error) {
txf := tx.NewFactoryCLI(clientCtx, flags).
WithTxConfig(clientCtx.TxConfig).
WithAccountRetriever(clientCtx.AccountRetriever)
keyname := clientCtx.GetFromName()
info, err := txf.Keybase().Key(keyname)
if err != nil {
return nil, err
}
txf, err = tx.PrepareFactory(clientCtx, txf)
if err != nil {
return nil, err
}
// If users pass gas adjustment, then calculate gas
_, adjusted, err := tx.CalculateGas(clientCtx.QueryWithData, txf, msgs...)
if err != nil {
return nil, err
}
// Set the gas amount on the transaction factory
txf = txf.WithGas(adjusted)
// Build the transaction builder
txb, err := tx.BuildUnsignedTx(txf, msgs...)
if err != nil {
return nil, err
}
// Attach the signature to the transaction
err = tx.Sign(txf, info.GetName(), txb, true)
if err != nil {
return nil, err
}
// Generate the transaction bytes
txBytes, err := clientCtx.TxConfig.TxEncoder()(txb.GetTx())
if err != nil {
return nil, err
}
return clientCtx.BroadcastTxSync(txBytes)
}