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Add relayer address to module callbacks #206

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merged 6 commits into from
Jun 9, 2021
Merged

Add relayer address to module callbacks #206

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2fd4660
Add relayer address to module callbacks
ethanfrey May 31, 2021
0ad5eec
Update CHANGELOG
ethanfrey May 31, 2021
8b7935b
Merge branch 'main' into expose-packet-signer
ethanfrey Jun 3, 2021
82bad81
update migration docs
colin-axner Jun 3, 2021
efe932c
Merge pull request #1 from cosmos/expose-packet-signer
ethanfrey Jun 3, 2021
55d636f
Merge branch 'main' into expose-packet-signer
ethanfrey Jun 9, 2021
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1 change: 1 addition & 0 deletions CHANGELOG.md
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Expand Up @@ -49,6 +49,7 @@ Ref: https://keepachangelog.com/en/1.0.0/

### API Breaking

* (modules) [\#206](https://github.com/cosmos/ibc-go/pull/206) Expose `relayer sdk.AccAddress` on `OnRecvPacket`, `OnAcknowledgementPacket`, `OnTimeoutPacket` module callbacks to enable incentivization.
* (02-client) [\#181](https://github.com/cosmos/ibc-go/pull/181) Remove 'InitialHeight' from UpdateClient Proposal. Only copy over latest consensus state from substitute client.
* (06-solomachine) [\#169](https://github.com/cosmos/ibc-go/pull/169) Change FrozenSequence to boolean in solomachine ClientState. The solo machine proto package has been bumped from `v1` to `v2`.
* (module/core/02-client) [\#165](https://github.com/cosmos/ibc-go/pull/165) Remove GetFrozenHeight from the ClientState interface.
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2 changes: 2 additions & 0 deletions docs/migrations/ibc-migration-043.md
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Expand Up @@ -106,6 +106,8 @@ Application developers need to update their `OnRecvPacket` callback logic.

The `OnRecvPacket` callback has been modified to only return the acknowledgement. The acknowledgement returned must implement the `Acknowledgement` interface. The acknowledgement should indicate if it represents a successful processing of a packet by returning true on `Success()` and false in all other cases. A return value of false on `Success()` will result in all state changes which occurred in the callback being discarded. More information can be found in the [documentation](https://github.com/cosmos/ibc-go/blob/main/docs/custom.md#receiving-packets).

The `OnRecvPacket`, `OnAcknowledgementPacket`, and `OnTimeoutPacket` callbacks are now passed the `sdk.AccAddress` of the relayer who relayed the IBC packet. Applications may use or ignore this information.

## IBC Event changes

The `packet_data` attribute has been deprecated in favor of `packet_data_hex`, in order to provide standardized encoding/decoding of packet data in events. While the `packet_data` event still exists, all relayers and IBC Event consumers are strongly encouraged to switch over to using `packet_data_hex` as soon as possible.
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3 changes: 3 additions & 0 deletions modules/apps/transfer/module.go
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Expand Up @@ -323,6 +323,7 @@ func (am AppModule) OnChanCloseConfirm(
func (am AppModule) OnRecvPacket(
ctx sdk.Context,
packet channeltypes.Packet,
relayer sdk.AccAddress,
) ibcexported.Acknowledgement {
ack := channeltypes.NewResultAcknowledgement([]byte{byte(1)})

Expand Down Expand Up @@ -360,6 +361,7 @@ func (am AppModule) OnAcknowledgementPacket(
ctx sdk.Context,
packet channeltypes.Packet,
acknowledgement []byte,
relayer sdk.AccAddress,
) (*sdk.Result, error) {
var ack channeltypes.Acknowledgement
if err := types.ModuleCdc.UnmarshalJSON(acknowledgement, &ack); err != nil {
Expand Down Expand Up @@ -411,6 +413,7 @@ func (am AppModule) OnAcknowledgementPacket(
func (am AppModule) OnTimeoutPacket(
ctx sdk.Context,
packet channeltypes.Packet,
relayer sdk.AccAddress,
) (*sdk.Result, error) {
var data types.FungibleTokenPacketData
if err := types.ModuleCdc.UnmarshalJSON(packet.GetData(), &data); err != nil {
Expand Down
3 changes: 3 additions & 0 deletions modules/core/05-port/types/module.go
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Expand Up @@ -67,16 +67,19 @@ type IBCModule interface {
OnRecvPacket(
ctx sdk.Context,
packet channeltypes.Packet,
relayer sdk.AccAddress,
) exported.Acknowledgement

OnAcknowledgementPacket(
ctx sdk.Context,
packet channeltypes.Packet,
acknowledgement []byte,
relayer sdk.AccAddress,
) (*sdk.Result, error)

OnTimeoutPacket(
ctx sdk.Context,
packet channeltypes.Packet,
relayer sdk.AccAddress,
) (*sdk.Result, error)
}
29 changes: 25 additions & 4 deletions modules/core/keeper/msg_server.go
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Expand Up @@ -424,6 +424,11 @@ func (k Keeper) ChannelCloseConfirm(goCtx context.Context, msg *channeltypes.Msg
func (k Keeper) RecvPacket(goCtx context.Context, msg *channeltypes.MsgRecvPacket) (*channeltypes.MsgRecvPacketResponse, error) {
ctx := sdk.UnwrapSDKContext(goCtx)

relayer, err := sdk.AccAddressFromBech32(msg.Signer)
if err != nil {
return nil, sdkerrors.Wrap(err, "Invalid address for msg Signer")
}

// Lookup module by channel capability
module, cap, err := k.ChannelKeeper.LookupModuleByChannel(ctx, msg.Packet.DestinationPort, msg.Packet.DestinationChannel)
if err != nil {
Expand All @@ -444,7 +449,7 @@ func (k Keeper) RecvPacket(goCtx context.Context, msg *channeltypes.MsgRecvPacke
// Perform application logic callback
// Cache context so that we may discard state changes from callback if the acknowledgement is unsuccessful.
cacheCtx, writeFn := ctx.CacheContext()
ack := cbs.OnRecvPacket(cacheCtx, msg.Packet)
ack := cbs.OnRecvPacket(cacheCtx, msg.Packet, relayer)
if ack == nil || ack.Success() {
// write application state changes for asynchronous and successful acknowledgements
writeFn()
Expand Down Expand Up @@ -478,6 +483,12 @@ func (k Keeper) RecvPacket(goCtx context.Context, msg *channeltypes.MsgRecvPacke
// Timeout defines a rpc handler method for MsgTimeout.
func (k Keeper) Timeout(goCtx context.Context, msg *channeltypes.MsgTimeout) (*channeltypes.MsgTimeoutResponse, error) {
ctx := sdk.UnwrapSDKContext(goCtx)

relayer, err := sdk.AccAddressFromBech32(msg.Signer)
if err != nil {
return nil, sdkerrors.Wrap(err, "Invalid address for msg Signer")
}

// Lookup module by channel capability
module, cap, err := k.ChannelKeeper.LookupModuleByChannel(ctx, msg.Packet.SourcePort, msg.Packet.SourceChannel)
if err != nil {
Expand All @@ -496,7 +507,7 @@ func (k Keeper) Timeout(goCtx context.Context, msg *channeltypes.MsgTimeout) (*c
}

// Perform application logic callback
_, err = cbs.OnTimeoutPacket(ctx, msg.Packet)
_, err = cbs.OnTimeoutPacket(ctx, msg.Packet, relayer)
if err != nil {
return nil, sdkerrors.Wrap(err, "timeout packet callback failed")
}
Expand Down Expand Up @@ -527,6 +538,11 @@ func (k Keeper) Timeout(goCtx context.Context, msg *channeltypes.MsgTimeout) (*c
func (k Keeper) TimeoutOnClose(goCtx context.Context, msg *channeltypes.MsgTimeoutOnClose) (*channeltypes.MsgTimeoutOnCloseResponse, error) {
ctx := sdk.UnwrapSDKContext(goCtx)

relayer, err := sdk.AccAddressFromBech32(msg.Signer)
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@AdityaSripal this was already implemented.

Timeout and TimeoutOnClose messages both call the same module callback, so I had to update them to get the code to compile

if err != nil {
return nil, sdkerrors.Wrap(err, "Invalid address for msg Signer")
}

// Lookup module by channel capability
module, cap, err := k.ChannelKeeper.LookupModuleByChannel(ctx, msg.Packet.SourcePort, msg.Packet.SourceChannel)
if err != nil {
Expand All @@ -547,7 +563,7 @@ func (k Keeper) TimeoutOnClose(goCtx context.Context, msg *channeltypes.MsgTimeo
// Perform application logic callback
// NOTE: MsgTimeout and MsgTimeoutOnClose use the same "OnTimeoutPacket"
// application logic callback.
_, err = cbs.OnTimeoutPacket(ctx, msg.Packet)
_, err = cbs.OnTimeoutPacket(ctx, msg.Packet, relayer)
if err != nil {
return nil, sdkerrors.Wrap(err, "timeout packet callback failed")
}
Expand Down Expand Up @@ -578,6 +594,11 @@ func (k Keeper) TimeoutOnClose(goCtx context.Context, msg *channeltypes.MsgTimeo
func (k Keeper) Acknowledgement(goCtx context.Context, msg *channeltypes.MsgAcknowledgement) (*channeltypes.MsgAcknowledgementResponse, error) {
ctx := sdk.UnwrapSDKContext(goCtx)

relayer, err := sdk.AccAddressFromBech32(msg.Signer)
if err != nil {
return nil, sdkerrors.Wrap(err, "Invalid address for msg Signer")
}

// Lookup module by channel capability
module, cap, err := k.ChannelKeeper.LookupModuleByChannel(ctx, msg.Packet.SourcePort, msg.Packet.SourceChannel)
if err != nil {
Expand All @@ -596,7 +617,7 @@ func (k Keeper) Acknowledgement(goCtx context.Context, msg *channeltypes.MsgAckn
}

// Perform application logic callback
_, err = cbs.OnAcknowledgementPacket(ctx, msg.Packet, msg.Acknowledgement)
_, err = cbs.OnAcknowledgementPacket(ctx, msg.Packet, msg.Acknowledgement, relayer)
if err != nil {
return nil, sdkerrors.Wrap(err, "acknowledge packet callback failed")
}
Expand Down
9 changes: 6 additions & 3 deletions testing/mock/mock.go
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Expand Up @@ -17,6 +17,7 @@ import (
abci "github.com/tendermint/tendermint/abci/types"

channeltypes "github.com/cosmos/ibc-go/modules/core/04-channel/types"
porttypes "github.com/cosmos/ibc-go/modules/core/05-port/types"
host "github.com/cosmos/ibc-go/modules/core/24-host"
"github.com/cosmos/ibc-go/modules/core/exported"
)
Expand All @@ -34,6 +35,8 @@ var (
MockCanaryCapabilityName = "mock canary capability name"
)

var _ porttypes.IBCModule = AppModule{}

// Expected Interface
// PortKeeper defines the expected IBC port keeper
type PortKeeper interface {
Expand Down Expand Up @@ -189,7 +192,7 @@ func (am AppModule) OnChanCloseConfirm(sdk.Context, string, string) error {
}

// OnRecvPacket implements the IBCModule interface.
func (am AppModule) OnRecvPacket(ctx sdk.Context, packet channeltypes.Packet) exported.Acknowledgement {
func (am AppModule) OnRecvPacket(ctx sdk.Context, packet channeltypes.Packet, relayer sdk.AccAddress) exported.Acknowledgement {
// set state by claiming capability to check if revert happens return
am.scopedKeeper.NewCapability(ctx, MockCanaryCapabilityName)
if bytes.Equal(MockPacketData, packet.GetData()) {
Expand All @@ -202,11 +205,11 @@ func (am AppModule) OnRecvPacket(ctx sdk.Context, packet channeltypes.Packet) ex
}

// OnAcknowledgementPacket implements the IBCModule interface.
func (am AppModule) OnAcknowledgementPacket(sdk.Context, channeltypes.Packet, []byte) (*sdk.Result, error) {
func (am AppModule) OnAcknowledgementPacket(sdk.Context, channeltypes.Packet, []byte, sdk.AccAddress) (*sdk.Result, error) {
return nil, nil
}

// OnTimeoutPacket implements the IBCModule interface.
func (am AppModule) OnTimeoutPacket(sdk.Context, channeltypes.Packet) (*sdk.Result, error) {
func (am AppModule) OnTimeoutPacket(sdk.Context, channeltypes.Packet, sdk.AccAddress) (*sdk.Result, error) {
return nil, nil
}