93 lines
2.4 KiB
Go
93 lines
2.4 KiB
Go
package bank
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import (
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"github.com/armon/go-metrics"
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"github.com/cosmos/cosmos-sdk/telemetry"
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sdk "github.com/cosmos/cosmos-sdk/types"
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sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
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"github.com/cosmos/cosmos-sdk/x/bank/keeper"
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"github.com/cosmos/cosmos-sdk/x/bank/types"
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)
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// NewHandler returns a handler for "bank" type messages.
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func NewHandler(k keeper.Keeper) sdk.Handler {
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return func(ctx sdk.Context, msg sdk.Msg) (*sdk.Result, error) {
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ctx = ctx.WithEventManager(sdk.NewEventManager())
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switch msg := msg.(type) {
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case *types.MsgSend:
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return handleMsgSend(ctx, k, msg)
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case *types.MsgMultiSend:
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return handleMsgMultiSend(ctx, k, msg)
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default:
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return nil, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "unrecognized bank message type: %T", msg)
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}
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}
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}
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// Handle MsgSend.
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func handleMsgSend(ctx sdk.Context, k keeper.Keeper, msg *types.MsgSend) (*sdk.Result, error) {
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if !k.GetSendEnabled(ctx) {
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return nil, types.ErrSendDisabled
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}
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if k.BlockedAddr(msg.ToAddress) {
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return nil, sdkerrors.Wrapf(sdkerrors.ErrUnauthorized, "%s is not allowed to receive transactions", msg.ToAddress)
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}
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err := k.SendCoins(ctx, msg.FromAddress, msg.ToAddress, msg.Amount)
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if err != nil {
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return nil, err
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}
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defer func() {
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for _, a := range msg.Amount {
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telemetry.SetGaugeWithLabels(
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[]string{"tx", "msg", "send"},
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float32(a.Amount.Int64()),
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[]metrics.Label{telemetry.NewLabel("denom", a.Denom)},
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)
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}
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}()
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ctx.EventManager().EmitEvent(
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sdk.NewEvent(
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sdk.EventTypeMessage,
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sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
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),
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)
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return &sdk.Result{Events: ctx.EventManager().ABCIEvents()}, nil
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}
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// Handle MsgMultiSend.
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func handleMsgMultiSend(ctx sdk.Context, k keeper.Keeper, msg *types.MsgMultiSend) (*sdk.Result, error) {
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// NOTE: totalIn == totalOut should already have been checked
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if !k.GetSendEnabled(ctx) {
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return nil, types.ErrSendDisabled
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}
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for _, out := range msg.Outputs {
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if k.BlockedAddr(out.Address) {
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return nil, sdkerrors.Wrapf(sdkerrors.ErrUnauthorized, "%s is not allowed to receive transactions", out.Address)
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}
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}
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err := k.InputOutputCoins(ctx, msg.Inputs, msg.Outputs)
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if err != nil {
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return nil, err
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}
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ctx.EventManager().EmitEvent(
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sdk.NewEvent(
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sdk.EventTypeMessage,
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sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
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),
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)
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return &sdk.Result{Events: ctx.EventManager().ABCIEvents()}, nil
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}
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