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keeper.go
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keeper.go
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package keeper
import (
"fmt"
"github.com/tendermint/tendermint/libs/log"
"github.com/cosmos/cosmos-sdk/codec"
sdk "github.com/cosmos/cosmos-sdk/types"
errorsmod "cosmossdk.io/errors"
capabilitykeeper "github.com/cosmos/cosmos-sdk/x/capability/keeper"
paramtypes "github.com/cosmos/cosmos-sdk/x/params/types"
ibckeeper "github.com/cosmos/ibc-go/v5/modules/core/keeper"
"github.com/Stride-Labs/stride/v9/x/icacallbacks/types"
recordstypes "github.com/Stride-Labs/stride/v9/x/records/types"
channeltypes "github.com/cosmos/ibc-go/v5/modules/core/04-channel/types"
storetypes "github.com/cosmos/cosmos-sdk/store/types"
)
type (
Keeper struct {
cdc codec.BinaryCodec
storeKey storetypes.StoreKey
memKey storetypes.StoreKey
paramstore paramtypes.Subspace
scopedKeeper capabilitykeeper.ScopedKeeper
icacallbacks map[string]types.ICACallbackHandler
IBCKeeper ibckeeper.Keeper
}
)
func NewKeeper(
cdc codec.BinaryCodec,
storeKey,
memKey storetypes.StoreKey,
ps paramtypes.Subspace,
scopedKeeper capabilitykeeper.ScopedKeeper,
ibcKeeper ibckeeper.Keeper,
) *Keeper {
// set KeyTable if it has not already been set
if !ps.HasKeyTable() {
ps = ps.WithKeyTable(types.ParamKeyTable())
}
return &Keeper{
cdc: cdc,
storeKey: storeKey,
memKey: memKey,
paramstore: ps,
scopedKeeper: scopedKeeper,
icacallbacks: make(map[string]types.ICACallbackHandler),
IBCKeeper: ibcKeeper,
}
}
func (k Keeper) Logger(ctx sdk.Context) log.Logger {
return ctx.Logger().With("module", fmt.Sprintf("x/%s", types.ModuleName))
}
// Should we add a `AddICACallback`
func (k *Keeper) SetICACallbackHandler(module string, handler types.ICACallbackHandler) error {
_, found := k.icacallbacks[module]
if found {
return fmt.Errorf("callback handler already set for %s", module)
}
k.icacallbacks[module] = handler.RegisterICACallbacks()
return nil
}
func (k *Keeper) GetICACallbackHandler(module string) (types.ICACallbackHandler, error) {
callback, found := k.icacallbacks[module]
if !found {
return nil, fmt.Errorf("no callback handler found for %s", module)
}
return callback, nil
}
func (k Keeper) GetCallbackDataFromPacket(ctx sdk.Context, modulePacket channeltypes.Packet, callbackDataKey string) (cbd *types.CallbackData, found bool) {
// get the relevant module from the channel and port
portID := modulePacket.GetSourcePort()
channelID := modulePacket.GetSourceChannel()
// fetch the callback data
callbackData, found := k.GetCallbackData(ctx, callbackDataKey)
if !found {
k.Logger(ctx).Info(fmt.Sprintf("callback data not found for portID: %s, channelID: %s, sequence: %d", portID, channelID, modulePacket.Sequence))
return nil, false
} else {
k.Logger(ctx).Info(fmt.Sprintf("callback data found for portID: %s, channelID: %s, sequence: %d", portID, channelID, modulePacket.Sequence))
}
return &callbackData, true
}
func (k Keeper) GetICACallbackHandlerFromPacket(ctx sdk.Context, modulePacket channeltypes.Packet) (*types.ICACallbackHandler, error) {
module, _, err := k.IBCKeeper.ChannelKeeper.LookupModuleByChannel(ctx, modulePacket.GetSourcePort(), modulePacket.GetSourceChannel())
if err != nil {
k.Logger(ctx).Error(fmt.Sprintf("error LookupModuleByChannel for portID: %s, channelID: %s, sequence: %d", modulePacket.GetSourcePort(), modulePacket.GetSourceChannel(), modulePacket.Sequence))
return nil, err
}
// redirect transfer callbacks to the records module
// is there a better way to do this?
if module == "transfer" {
module = recordstypes.ModuleName
}
// fetch the callback function
callbackHandler, err := k.GetICACallbackHandler(module)
if err != nil {
return nil, errorsmod.Wrapf(types.ErrCallbackHandlerNotFound, "Callback handler does not exist for module %s | err: %s", module, err.Error())
}
return &callbackHandler, nil
}
func (k Keeper) CallRegisteredICACallback(ctx sdk.Context, modulePacket channeltypes.Packet, ackResponse *types.AcknowledgementResponse) error {
callbackDataKey := types.PacketID(modulePacket.GetSourcePort(), modulePacket.GetSourceChannel(), modulePacket.Sequence)
callbackData, found := k.GetCallbackDataFromPacket(ctx, modulePacket, callbackDataKey)
if !found {
return nil
}
callbackHandler, err := k.GetICACallbackHandlerFromPacket(ctx, modulePacket)
if err != nil {
k.Logger(ctx).Error(fmt.Sprintf("GetICACallbackHandlerFromPacket %s", err.Error()))
return err
}
// call the callback
if (*callbackHandler).HasICACallback(callbackData.CallbackId) {
k.Logger(ctx).Info(fmt.Sprintf("Calling callback for %s", callbackData.CallbackId))
// if acknowledgement is empty, then it is a timeout
err := (*callbackHandler).CallICACallback(ctx, callbackData.CallbackId, modulePacket, ackResponse, callbackData.CallbackArgs)
if err != nil {
errMsg := fmt.Sprintf("Error occured while calling ICACallback (%s) | err: %s", callbackData.CallbackId, err.Error())
k.Logger(ctx).Error(errMsg)
return errorsmod.Wrapf(types.ErrCallbackFailed, errMsg)
}
} else {
k.Logger(ctx).Error(fmt.Sprintf("Callback %v has no associated callback", callbackData))
}
// remove the callback data
k.RemoveCallbackData(ctx, callbackDataKey)
return nil
}