Merge PR #1741: CoreContext Refactor

client/utils/utils.go

@@ -0,0 +1,60 @@
+package utils
+
+import (
+	"github.com/cosmos/cosmos-sdk/client/context"
+	"github.com/cosmos/cosmos-sdk/client/keys"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	authctx "github.com/cosmos/cosmos-sdk/x/auth/client/context"
+)
+
+// SendTx implements a auxiliary handler that facilitates sending a series of
+// messages in a signed transaction given a TxContext and a QueryContext. It
+// ensures that the account exists, has a proper number and sequence set. In
+// addition, it builds and signs a transaction with the supplied messages.
+// Finally, it broadcasts the signed transaction to a node.
+func SendTx(txCtx authctx.TxContext, cliCtx context.CLIContext, msgs []sdk.Msg) error {
+	if err := cliCtx.EnsureAccountExists(); err != nil {
+		return err
+	}
+
+	from, err := cliCtx.GetFromAddress()
+	if err != nil {
+		return err
+	}
+
+	// TODO: (ref #1903) Allow for user supplied account number without
+	// automatically doing a manual lookup.
+	if txCtx.AccountNumber == 0 {
+		accNum, err := cliCtx.GetAccountNumber(from)
+		if err != nil {
+			return err
+		}
+
+		txCtx = txCtx.WithAccountNumber(accNum)
+	}
+
+	// TODO: (ref #1903) Allow for user supplied account sequence without
+	// automatically doing a manual lookup.
+	if txCtx.Sequence == 0 {
+		accSeq, err := cliCtx.GetAccountSequence(from)
+		if err != nil {
+			return err
+		}
+
+		txCtx = txCtx.WithSequence(accSeq)
+	}
+
+	passphrase, err := keys.GetPassphrase(cliCtx.FromAddressName)
+	if err != nil {
+		return err
+	}
+
+	// build and sign the transaction
+	txBytes, err := txCtx.BuildAndSign(cliCtx.FromAddressName, passphrase, msgs)
+	if err != nil {
+		return err
+	}
+
+	// broadcast to a Tendermint node
+	return cliCtx.EnsureBroadcastTx(txBytes)
+}