ibc_hooks

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 Go to latest Published: Nov 8, 2023 License: Apache-2.0 Imports: 24 Imported by: 0

README

IBC-hooks

This module is forked from https://github.com/osmosis-labs/osmosis/tree/main/x/ibc-hooks

IBC hooks

The IBC hooks module is an IBC middleware that enables ICS-20 token transfers to initiate contract calls. This functionality allows cross-chain contract calls that involve token movement. IBC hooks are useful for a variety of use cases, including cross-chain swaps, which are an extremely powerful primitive.

How do IBC hooks work?

IBC hooks are made possible through the memo field included in every ICS-20 transfer packet, as introduced in IBC v3.4.0.

The IBC hooks IBC middleware parses an ICS20 transfer, and if the memo field is of a particular form, executes a Wasm contract call.

The following sections detail the memo format for Wasm contract calls and the execution guarantees provided.

Cosmwasm Contract Execution Format

Before diving into the IBC metadata format, it's important to understand the Cosmwasm execute message format to get a sense of the specific fields that need to be set. Provided below is the CosmWasm MsgExecuteContract format as defined in the Wasm module.

type MsgExecuteContract struct {
	// Sender is the that actor that signed the messages
	Sender string
	// Contract is the address of the smart contract
	Contract string
	// Msg json encoded message to be passed to the contract
	Msg RawContractMessage
	// Funds coins that are transferred to the contract on execution
	Funds sdk.Coins
}

For use with IBC hooks, the message fields above can be derived from the following:

  • Sender: IBC packet senders cannot be explicitly trusted, as they can be deceitful. Chains cannot risk the sender being confused with a particular local user or module address. To prevent this, the sender is replaced with an account that represents the sender prefixed by the channel and a Wasm module prefix. This is done by setting the sender to Bech32(Hash("ibc-wasm-hook-intermediary" || channelID || sender)), where the channelId is the channel id on the local chain.
  • Contract: This field should be directly obtained from the ICS-20 packet metadata
  • Msg: This field should be directly obtained from the ICS-20 packet metadata.
  • Funds: This field is set to the amount of funds being sent over in the ICS-20 packet. The denom in the packet must be specified as the counterparty chain's representation of the denom.

WARNING: Due to a bug in the packet forward middleware, we cannot trust the sender from chains that use PFM. Until that is fixed, we recommend chains to not trust the sender on contracts executed via IBC hooks.

The fully constructed execute message will look like the following:

msg := MsgExecuteContract{
	// Sender is the that actor that signed the messages
	Sender: "osmo1-hash-of-channel-and-sender",
	// Contract is the address of the smart contract
	Contract: packet.data.memo["wasm"]["ContractAddress"],
	// Msg json encoded message to be passed to the contract
	Msg: packet.data.memo["wasm"]["Msg"],
	// Funds coins that are transferred to the contract on execution
	Funds: sdk.NewCoin{Denom: ibc.ConvertSenderDenomToLocalDenom(packet.data.Denom), Amount: packet.data.Amount}
}
ICS20 packet structure

Given the details above, you can propagate the implied ICS-20 packet data structure. ICS20 is JSON native, so you can use JSON for the memo format.

{
    //... other ibc fields that we don't care about
    "data":{
    	"denom": "denom on counterparty chain (e.g. uatom)",  // will be transformed to the local denom (ibc/...)
        "amount": "1000",
        "sender": "addr on counterparty chain", // will be transformed
        "receiver": "contract addr or blank",
    	"memo": {
           "wasm": {
              "contract": "osmo1contractAddr",
              "msg": {
                "raw_message_fields": "raw_message_data",
              }
            }
        }
    }
}

An ICS-20 packet is formatted correctly for IBC hooks if all of the following are true:

  • The memo is not blank.
  • Thememo is valid JSON.
  • The memo has at least one key, with the value "wasm".
  • The memo["wasm"] has exactly two entries, "contract" and "msg".
  • The memo["wasm"]["msg"] is a valid JSON object.
  • The receiver == "" || receiver == memo["wasm"]["contract"].

An ICS-20 packet is directed toward IBC hooks if all of the following are true:

  • The memo is not blank.
  • The memo is valid JSON.
  • The memo has at least one key, with the name "wasm".

If an ICS-20 packet is not directed towards IBC hooks, IBC hooks doesn't do anything. If an ICS-20 packet is directed towards IBC hooks, and is formatted incorrectly, then IBC hooks returns an error.

Execution flow
  1. Pre-IBC hooks:
  • Ensure the incoming IBC packet is cryptographically valid.
  • Ensure the incoming IBC packet is not timed out.
  1. In IBC hooks, pre-packet execution:
  • Ensure the packet is correctly formatted (as defined above).
  • Edit the receiver to be the hardcoded IBC module account.
  1. In IBC hooks, post packet execution:
  • Construct a Wasm message as defined before.
  • Execute the Wasm message.
  • If the Wasm message has an error, return ErrAck.
  • Otherwise, continue through middleware.

Ack callbacks

A contract that sends an IBC transfer may need to listen for the ack from that packet. Ack callbacks allow contracts to listen in on the ack of specific packets.

Design

The sender of an IBC transfer packet may specify a callback for when the Ack of that packet is received in the memo field of the transfer packet.

Crucially, only the IBC packet sender can set the callback.

Use case

The cross-chain swaps implementation sends an IBC transfer. If the transfer were to fail, the sender should be able to retrieve their funds which would otherwise be stuck in the contract. To do this, users should be allowed to retrieve the funds after the timeout has passed. However, without the Ack information, one cannot guarantee that the send hasn't failed (i.e.: returned an error ack notifying that the receiving chain didn't accept it).

Implementation
Callback information in memo

For the callback to be processed, the transfer packet's memo should contain the following in its JSON:

{"ibc_callback": "osmo1contractAddr"}

The IBC hooks will keep the mapping from the packet's channel and sequence to the contract in storage. When an Ack is received, it will notify the specified contract via a sudo message.

Interface for receiving the Acks and Timeouts

The contract that awaits the callback should implement the following interface for a sudo message:

#[cw_serde]
pub enum IBCLifecycleComplete {
    #[serde(rename = "ibc_ack")]
    IBCAck {
        /// The source channel (osmosis side) of the IBC packet
        channel: String,
        /// The sequence number that the packet was sent with
        sequence: u64,
        /// String encoded version of the `Ack` as seen by OnAcknowledgementPacket(..)
        ack: String,
        /// Weather an `Ack` is a success of failure according to the transfer spec
        success: bool,
    },
    #[serde(rename = "ibc_timeout")]
    IBCTimeout {
        /// The source channel (osmosis side) of the IBC packet
        channel: String,
        /// The sequence number that the packet was sent with
        sequence: u64,
    },
}

/// Message type for `sudo` entry_point
#[cw_serde]
pub enum SudoMsg {
    #[serde(rename = "ibc_lifecycle_complete")]
    IBCLifecycleComplete(IBCLifecycleComplete),
}

Installation

Follow these steps to install the IBC hooks module. The following lines are all added to app.go

  1. Import the following packages.
// import (
    ...
    ibchooks "github.com/cosmos/ibc-apps/modules/ibc-hooks/v7"
	ibchookskeeper "github.com/cosmos/ibc-apps/modules/ibc-hooks/v7/keeper"
	ibchookstypes "github.com/cosmos/ibc-apps/modules/ibc-hooks/v7/types"
    ...
// )
  1. Add the module.
// var (
	//DefaultNodeHome string
	//ModuleBasics = module.NewBasicManager(
        ...
        ibchooks.AppModuleBasic{},
        ...
    // )
  1. Add the IBC hooks keeper.

// type App struct {
    ...
    IBCHooksKeeper   ibchookskeeper.Keeper
    ...
// }
  1. Initiate the keepers and helpers.
...

	// 'ibc-hooks' module - depends on
	// 1. 'auth'
	// 2. 'bank'
	// 3. 'distr'
	app.keys[ibchookstypes.StoreKey] = storetypes.NewKVStoreKey(ibchookstypes.StoreKey)
	app.IBCHooksKeeper = ibchookskeeper.NewKeeper(
		app.keys[ibchookstypes.StoreKey],
	)
	app.Ics20WasmHooks = ibchooks.NewWasmHooks(&app.IBCHooksKeeper, nil, AccountAddressPrefix) // The contract keeper needs to be set later
	
	// initialize the wasm keeper with
	// wasmKeeper := wasm.NewKeeper( ... )
	app.WasmKeeper = &wasmKeeper

	// Pass the contract keeper to all the structs (generally ICS4Wrappers for ibc middlewares) that need it
	app.ContractKeeper = wasmkeeper.NewDefaultPermissionKeeper(app.WasmKeeper)
	app.Ics20WasmHooks.ContractKeeper = app.ContractKeeper
	app.HooksICS4Wrapper = ibchooks.NewICS4Middleware(
		app.IBCKeeper.ChannelKeeper,
		app.Ics20WasmHooks,
	)
	// Hooks Middleware
	transferIBCModule := ibctransfer.NewIBCModule(app.TransferKeeper)
	app.TransferStack = ibchooks.NewIBCMiddleware(&transferIBCModule, &app.HooksICS4Wrapper)

...
  1. Register the genesis, begin blocker and end block hooks.
...

	app.ModuleManager.SetOrderBeginBlockers(
		// upgrades should be run first
		upgradetypes.ModuleName,
		capabilitytypes.ModuleName,
		minttypes.ModuleName,
		consensustypes.ModuleName,
		distrtypes.ModuleName,
		slashingtypes.ModuleName,
		evidencetypes.ModuleName,
		stakingtypes.ModuleName,
		authtypes.ModuleName,
		banktypes.ModuleName,
		govtypes.ModuleName,
		crisistypes.ModuleName,
		ibctransfertypes.ModuleName,
		ibcexported.ModuleName,
		icatypes.ModuleName,
		ibcfeetypes.ModuleName,
		genutiltypes.ModuleName,
		authz.ModuleName,
		feegrant.ModuleName,
		group.ModuleName,
		paramstypes.ModuleName,
		vestingtypes.ModuleName,
		nft.ModuleName,
		ibchookstypes.ModuleName,
		wasm.ModuleName,
		// this line is used by starport scaffolding # stargate/app/beginBlockers
	)

	app.ModuleManager.SetOrderEndBlockers(
		crisistypes.ModuleName,
		govtypes.ModuleName,
		stakingtypes.ModuleName,
		consensustypes.ModuleName,
		ibctransfertypes.ModuleName,
		ibcexported.ModuleName,
		icatypes.ModuleName,
		capabilitytypes.ModuleName,
		authtypes.ModuleName,
		banktypes.ModuleName,
		distrtypes.ModuleName,
		slashingtypes.ModuleName,
		minttypes.ModuleName,
		genutiltypes.ModuleName,
		evidencetypes.ModuleName,
		authz.ModuleName,
		feegrant.ModuleName,
		group.ModuleName,
		paramstypes.ModuleName,
		upgradetypes.ModuleName,
		vestingtypes.ModuleName,
		nft.ModuleName,
		ibcfeetypes.ModuleName,
		ibchookstypes.ModuleName,
		wasm.ModuleName,
		// this line is used by starport scaffolding # stargate/app/endBlockers
	)

	// NOTE: The genutils module must occur after staking so that pools are
	// properly initialized with tokens from genesis accounts.
	// NOTE: Capability module must occur first so that it can initialize any capabilities
	// so that other modules that want to create or claim capabilities afterwards in InitChain
	// can do so safely.
	app.ModuleManager.SetOrderInitGenesis(
		capabilitytypes.ModuleName,
		authtypes.ModuleName,
		banktypes.ModuleName,
		distrtypes.ModuleName,
		stakingtypes.ModuleName,
		slashingtypes.ModuleName,
		consensustypes.ModuleName,
		govtypes.ModuleName,
		minttypes.ModuleName,
		crisistypes.ModuleName,
		genutiltypes.ModuleName,
		ibctransfertypes.ModuleName,
		ibcexported.ModuleName,
		icatypes.ModuleName,
		evidencetypes.ModuleName,
		authz.ModuleName,
		feegrant.ModuleName,
		group.ModuleName,
		paramstypes.ModuleName,
		upgradetypes.ModuleName,
		vestingtypes.ModuleName,
		nft.ModuleName,
		ibcfeetypes.ModuleName,
		ibchookstypes.ModuleName,
		wasm.ModuleName,
		// this line is used by starport scaffolding # stargate/app/initGenesis
	)

...

Tests

Tests are included in the tests folder.

Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func IsJsonAckError 

func IsJsonAckError(acknowledgement []byte) bool

IsJsonAckError checks an IBC acknowledgement to see if it's an error. This is a replacement for ack.Success() which is currently not working on some circumstances

func MustExtractDenomFromPacketOnRecv 

func MustExtractDenomFromPacketOnRecv(packet ibcexported.PacketI) string

MustExtractDenomFromPacketOnRecv takes a packet with a valid ICS20 token data in the Data field and returns the denom as represented in the local chain. If the data cannot be unmarshalled this function will panic

func NewEmitErrorAcknowledgement 

func NewEmitErrorAcknowledgement(ctx sdk.Context, err error, errorContexts ...string) channeltypes.Acknowledgement

NewEmitErrorAcknowledgement creates a new error acknowledgement after having emitted an event with the details of the error.

func ValidateAndParseMemo 

func ValidateAndParseMemo(memo string, receiver string) (isWasmRouted bool, contractAddr sdk.AccAddress, msgBytes []byte, err error)

Types

type AppModule 

type AppModule struct {
	AppModuleBasic
	// contains filtered or unexported fields
}

AppModule implements an application module for the ibc-hooks module.

func NewAppModule 

func NewAppModule(ak authkeeper.AccountKeeper) AppModule

NewAppModule creates a new AppModule object.

func (AppModule) BeginBlock 

func (am AppModule) BeginBlock(ctx sdk.Context, _ abci.RequestBeginBlock)

BeginBlock returns the begin blocker for the ibc-hooks module.

func (AppModule) ConsensusVersion 

func (AppModule) ConsensusVersion() uint64

ConsensusVersion implements AppModule/ConsensusVersion.

func (AppModule) EndBlock 

func (AppModule) EndBlock(_ sdk.Context, _ abci.RequestEndBlock) []abci.ValidatorUpdate

EndBlock returns the end blocker for the ibc-hooks module. It returns no validator updates.

func (AppModule) ExportGenesis 

func (am AppModule) ExportGenesis(ctx sdk.Context, cdc codec.JSONCodec) json.RawMessage

func (AppModule) InitGenesis 

func (am AppModule) InitGenesis(ctx sdk.Context, cdc codec.JSONCodec, data json.RawMessage) []abci.ValidatorUpdate

InitGenesis performs genesis initialization for the ibc-hooks module. It returns no validator updates.

func (AppModule) Name 

func (AppModule) Name() string

Name returns the ibc-hooks module's name.

func (AppModule) RegisterInvariants 

func (am AppModule) RegisterInvariants(_ sdk.InvariantRegistry)

RegisterInvariants registers the ibc-hooks module invariants.

func (AppModule) RegisterServices 

func (am AppModule) RegisterServices(cfg module.Configurator)

RegisterServices registers a gRPC query service to respond to the module-specific gRPC queries.

type AppModuleBasic 

type AppModuleBasic struct{}

AppModuleBasic defines the basic application module used by the ibc-hooks module.

func (AppModuleBasic) DefaultGenesis 

func (AppModuleBasic) DefaultGenesis(cdc codec.JSONCodec) json.RawMessage

DefaultGenesis returns default genesis state as raw bytes for the module.

func (AppModuleBasic) GetQueryCmd 

func (AppModuleBasic) GetQueryCmd() *cobra.Command

GetQueryCmd returns the root query command for the ibc-hooks module.

func (AppModuleBasic) GetTxCmd 

func (AppModuleBasic) GetTxCmd() *cobra.Command

GetTxCmd returns no root tx command for the ibc-hooks module.

func (AppModuleBasic) Name 

func (AppModuleBasic) Name() string

Name returns the ibc-hooks module's name.

func (AppModuleBasic) RegisterGRPCGatewayRoutes 

func (AppModuleBasic) RegisterGRPCGatewayRoutes(clientCtx client.Context, mux *runtime.ServeMux)

RegisterGRPCGatewayRoutes registers the gRPC Gateway routes for the ibc-hooks module.

func (AppModuleBasic) RegisterInterfaces 

func (b AppModuleBasic) RegisterInterfaces(_ cdctypes.InterfaceRegistry)

RegisterInterfaces registers the module's interface types.

func (AppModuleBasic) RegisterLegacyAminoCodec 

func (AppModuleBasic) RegisterLegacyAminoCodec(cdc *codec.LegacyAmino)

RegisterLegacyAminoCodec registers the ibc-hooks module's types on the given LegacyAmino codec.

func (AppModuleBasic) RegisterRESTRoutes 

func (AppModuleBasic) RegisterRESTRoutes(clientCtx client.Context, rtr *mux.Router)

RegisterRESTRoutes registers the REST routes for the ibc-hooks module.

func (AppModuleBasic) ValidateGenesis 

func (AppModuleBasic) ValidateGenesis(cdc codec.JSONCodec, config client.TxEncodingConfig, bz json.RawMessage) error

ValidateGenesis performs genesis state validation for the ibc-hooks module.

type ContractAck 

type ContractAck struct {
	ContractResult []byte `json:"contract_result"`
	IbcAck         []byte `json:"ibc_ack"`
}

type GetAppVersionAfterHooks 

type GetAppVersionAfterHooks interface {
	GetAppVersionAfterHook(ctx sdk.Context, portID, channelID string, result string, success bool)
}

type GetAppVersionBeforeHooks 

type GetAppVersionBeforeHooks interface {
	GetAppVersionBeforeHook(ctx sdk.Context, portID, channelID string)
}

type GetAppVersionOverrideHooks 

type GetAppVersionOverrideHooks interface {
	GetAppVersionOverride(i ICS4Middleware, ctx sdk.Context, portID, channelID string) (string, bool)
}

GetAppVersion Hooks

type Hooks 

type Hooks interface{}

type IBCMiddleware 

type IBCMiddleware struct {
	App            porttypes.IBCModule
	ICS4Middleware *ICS4Middleware
}

func NewIBCMiddleware 

func NewIBCMiddleware(app porttypes.IBCModule, ics4 *ICS4Middleware) IBCMiddleware

func (IBCMiddleware) GetAppVersion 

func (im IBCMiddleware) GetAppVersion(ctx sdk.Context, portID, channelID string) (string, bool)

func (IBCMiddleware) OnAcknowledgementPacket 

func (im IBCMiddleware) OnAcknowledgementPacket(
	ctx sdk.Context,
	packet channeltypes.Packet,
	acknowledgement []byte,
	relayer sdk.AccAddress,
) error

OnAcknowledgementPacket implements the IBCMiddleware interface

func (IBCMiddleware) OnChanCloseConfirm 

func (im IBCMiddleware) OnChanCloseConfirm(
	ctx sdk.Context,
	portID,
	channelID string,
) error

OnChanCloseConfirm implements the IBCMiddleware interface

func (IBCMiddleware) OnChanCloseInit 

func (im IBCMiddleware) OnChanCloseInit(
	ctx sdk.Context,
	portID,
	channelID string,
) error

OnChanCloseInit implements the IBCMiddleware interface

func (IBCMiddleware) OnChanOpenAck 

func (im IBCMiddleware) OnChanOpenAck(
	ctx sdk.Context,
	portID,
	channelID string,
	counterpartyChannelID string,
	counterpartyVersion string,
) error

OnChanOpenAck implements the IBCMiddleware interface

func (IBCMiddleware) OnChanOpenConfirm 

func (im IBCMiddleware) OnChanOpenConfirm(
	ctx sdk.Context,
	portID,
	channelID string,
) error

OnChanOpenConfirm implements the IBCMiddleware interface

func (IBCMiddleware) OnChanOpenInit 

func (im IBCMiddleware) OnChanOpenInit(
	ctx sdk.Context,
	order channeltypes.Order,
	connectionHops []string,
	portID string,
	channelID string,
	channelCap *capabilitytypes.Capability,
	counterparty channeltypes.Counterparty,
	version string,
) (string, error)

OnChanOpenInit implements the IBCMiddleware interface

func (IBCMiddleware) OnChanOpenTry 

func (im IBCMiddleware) OnChanOpenTry(
	ctx sdk.Context,
	order channeltypes.Order,
	connectionHops []string,
	portID,
	channelID string,
	channelCap *capabilitytypes.Capability,
	counterparty channeltypes.Counterparty,
	counterpartyVersion string,
) (string, error)

OnChanOpenTry implements the IBCMiddleware interface

func (IBCMiddleware) OnRecvPacket 

func (im IBCMiddleware) OnRecvPacket(
	ctx sdk.Context,
	packet channeltypes.Packet,
	relayer sdk.AccAddress,
) ibcexported.Acknowledgement

OnRecvPacket implements the IBCMiddleware interface

func (IBCMiddleware) OnTimeoutPacket 

func (im IBCMiddleware) OnTimeoutPacket(
	ctx sdk.Context,
	packet channeltypes.Packet,
	relayer sdk.AccAddress,
) error

OnTimeoutPacket implements the IBCMiddleware interface

func (IBCMiddleware) SendPacket 

func (im IBCMiddleware) SendPacket(
	ctx sdk.Context,
	chanCap *capabilitytypes.Capability,
	sourcePort string,
	sourceChannel string,
	timeoutHeight ibcclienttypes.Height,
	timeoutTimestamp uint64,
	data []byte,
) (sequence uint64, err error)

SendPacket implements the ICS4 Wrapper interface

func (IBCMiddleware) WriteAcknowledgement 

func (im IBCMiddleware) WriteAcknowledgement(
	ctx sdk.Context,
	chanCap *capabilitytypes.Capability,
	packet ibcexported.PacketI,
	ack ibcexported.Acknowledgement,
) error

WriteAcknowledgement implements the ICS4 Wrapper interface

type ICS4Middleware 

type ICS4Middleware struct {

	// Hooks
	Hooks Hooks
	// contains filtered or unexported fields
}

func NewICS4Middleware 

func NewICS4Middleware(channel porttypes.ICS4Wrapper, hooks Hooks) ICS4Middleware

func (ICS4Middleware) GetAppVersion 

func (i ICS4Middleware) GetAppVersion(ctx sdk.Context, portID, channelID string) (string, bool)

func (ICS4Middleware) SendPacket 

func (i ICS4Middleware) SendPacket(ctx sdk.Context, channelCap *capabilitytypes.Capability, sourcePort string, sourceChannel string, timeoutHeight ibcclienttypes.Height, timeoutTimestamp uint64, data []byte) (sequence uint64, err error)

func (ICS4Middleware) WriteAcknowledgement 

func (i ICS4Middleware) WriteAcknowledgement(ctx sdk.Context, chanCap *capabilitytypes.Capability, packet ibcexported.PacketI, ack ibcexported.Acknowledgement) error

type OnAcknowledgementPacketAfterHooks 

type OnAcknowledgementPacketAfterHooks interface {
	OnAcknowledgementPacketAfterHook(ctx sdk.Context, packet channeltypes.Packet, acknowledgement []byte, relayer sdk.AccAddress, err error)
}

type OnAcknowledgementPacketBeforeHooks 

type OnAcknowledgementPacketBeforeHooks interface {
	OnAcknowledgementPacketBeforeHook(ctx sdk.Context, packet channeltypes.Packet, acknowledgement []byte, relayer sdk.AccAddress)
}

type OnAcknowledgementPacketOverrideHooks 

type OnAcknowledgementPacketOverrideHooks interface {
	OnAcknowledgementPacketOverride(im IBCMiddleware, ctx sdk.Context, packet channeltypes.Packet, acknowledgement []byte, relayer sdk.AccAddress) error
}

OnAcknowledgementPacket Hooks

type OnChanCloseConfirmAfterHooks 

type OnChanCloseConfirmAfterHooks interface {
	OnChanCloseConfirmAfterHook(ctx sdk.Context, portID, channelID string, err error)
}

type OnChanCloseConfirmBeforeHooks 

type OnChanCloseConfirmBeforeHooks interface {
	OnChanCloseConfirmBeforeHook(ctx sdk.Context, portID, channelID string)
}

type OnChanCloseConfirmOverrideHooks 

type OnChanCloseConfirmOverrideHooks interface {
	OnChanCloseConfirmOverride(im IBCMiddleware, ctx sdk.Context, portID, channelID string) error
}

OnChanCloseConfirm Hooks

type OnChanCloseInitAfterHooks 

type OnChanCloseInitAfterHooks interface {
	OnChanCloseInitAfterHook(ctx sdk.Context, portID, channelID string, err error)
}

type OnChanCloseInitBeforeHooks 

type OnChanCloseInitBeforeHooks interface {
	OnChanCloseInitBeforeHook(ctx sdk.Context, portID, channelID string)
}

type OnChanCloseInitOverrideHooks 

type OnChanCloseInitOverrideHooks interface {
	OnChanCloseInitOverride(im IBCMiddleware, ctx sdk.Context, portID, channelID string) error
}

OnChanCloseInit Hooks

type OnChanOpenAckAfterHooks 

type OnChanOpenAckAfterHooks interface {
	OnChanOpenAckAfterHook(ctx sdk.Context, portID, channelID string, counterpartyChannelID string, counterpartyVersion string, err error)
}

type OnChanOpenAckBeforeHooks 

type OnChanOpenAckBeforeHooks interface {
	OnChanOpenAckBeforeHook(ctx sdk.Context, portID, channelID string, counterpartyChannelID string, counterpartyVersion string)
}

type OnChanOpenAckOverrideHooks 

type OnChanOpenAckOverrideHooks interface {
	OnChanOpenAckOverride(im IBCMiddleware, ctx sdk.Context, portID, channelID string, counterpartyChannelID string, counterpartyVersion string) error
}

OnChanOpenAck Hooks

type OnChanOpenConfirmAfterHooks 

type OnChanOpenConfirmAfterHooks interface {
	OnChanOpenConfirmAfterHook(ctx sdk.Context, portID, channelID string, err error)
}

type OnChanOpenConfirmBeforeHooks 

type OnChanOpenConfirmBeforeHooks interface {
	OnChanOpenConfirmBeforeHook(ctx sdk.Context, portID, channelID string)
}

type OnChanOpenConfirmOverrideHooks 

type OnChanOpenConfirmOverrideHooks interface {
	OnChanOpenConfirmOverride(im IBCMiddleware, ctx sdk.Context, portID, channelID string) error
}

OnChanOpenConfirm Hooks

type OnChanOpenInitAfterHooks 

type OnChanOpenInitAfterHooks interface {
	OnChanOpenInitAfterHook(ctx sdk.Context, order channeltypes.Order, connectionHops []string, portID string, channelID string, channelCap *capabilitytypes.Capability, counterparty channeltypes.Counterparty, version string, finalVersion string, err error)
}

type OnChanOpenInitBeforeHooks 

type OnChanOpenInitBeforeHooks interface {
	OnChanOpenInitBeforeHook(ctx sdk.Context, order channeltypes.Order, connectionHops []string, portID string, channelID string, channelCap *capabilitytypes.Capability, counterparty channeltypes.Counterparty, version string)
}

type OnChanOpenInitOverrideHooks 

type OnChanOpenInitOverrideHooks interface {
	OnChanOpenInitOverride(im IBCMiddleware, ctx sdk.Context, order channeltypes.Order, connectionHops []string, portID string, channelID string, channelCap *capabilitytypes.Capability, counterparty channeltypes.Counterparty, version string) (string, error)
}

type OnChanOpenTryAfterHooks 

type OnChanOpenTryAfterHooks interface {
	OnChanOpenTryAfterHook(ctx sdk.Context, order channeltypes.Order, connectionHops []string, portID, channelID string, channelCap *capabilitytypes.Capability, counterparty channeltypes.Counterparty, counterpartyVersion string, version string, err error)
}

type OnChanOpenTryBeforeHooks 

type OnChanOpenTryBeforeHooks interface {
	OnChanOpenTryBeforeHook(ctx sdk.Context, order channeltypes.Order, connectionHops []string, portID, channelID string, channelCap *capabilitytypes.Capability, counterparty channeltypes.Counterparty, counterpartyVersion string)
}

type OnChanOpenTryOverrideHooks 

type OnChanOpenTryOverrideHooks interface {
	OnChanOpenTryOverride(im IBCMiddleware, ctx sdk.Context, order channeltypes.Order, connectionHops []string, portID, channelID string, channelCap *capabilitytypes.Capability, counterparty channeltypes.Counterparty, counterpartyVersion string) (string, error)
}

OnChanOpenTry Hooks

type OnRecvPacketAfterHooks 

type OnRecvPacketAfterHooks interface {
	OnRecvPacketAfterHook(ctx sdk.Context, packet channeltypes.Packet, relayer sdk.AccAddress, ack ibcexported.Acknowledgement)
}

type OnRecvPacketBeforeHooks 

type OnRecvPacketBeforeHooks interface {
	OnRecvPacketBeforeHook(ctx sdk.Context, packet channeltypes.Packet, relayer sdk.AccAddress)
}

type OnRecvPacketOverrideHooks 

type OnRecvPacketOverrideHooks interface {
	OnRecvPacketOverride(im IBCMiddleware, ctx sdk.Context, packet channeltypes.Packet, relayer sdk.AccAddress) ibcexported.Acknowledgement
}

OnRecvPacket Hooks

type OnTimeoutPacketAfterHooks 

type OnTimeoutPacketAfterHooks interface {
	OnTimeoutPacketAfterHook(ctx sdk.Context, packet channeltypes.Packet, relayer sdk.AccAddress, err error)
}

type OnTimeoutPacketBeforeHooks 

type OnTimeoutPacketBeforeHooks interface {
	OnTimeoutPacketBeforeHook(ctx sdk.Context, packet channeltypes.Packet, relayer sdk.AccAddress)
}

type OnTimeoutPacketOverrideHooks 

type OnTimeoutPacketOverrideHooks interface {
	OnTimeoutPacketOverride(im IBCMiddleware, ctx sdk.Context, packet channeltypes.Packet, relayer sdk.AccAddress) error
}

OnTimeoutPacket Hooks

type SendPacketAfterHooks 

type SendPacketAfterHooks interface {
	SendPacketAfterHook(ctx sdk.Context, chanCap *capabilitytypes.Capability, sourcePort string, sourceChannel string, timeoutHeight ibcclienttypes.Height, timeoutTimestamp uint64, data []byte, err error)
}

type SendPacketBeforeHooks 

type SendPacketBeforeHooks interface {
	SendPacketBeforeHook(ctx sdk.Context, chanCap *capabilitytypes.Capability, sourcePort string, sourceChannel string, timeoutHeight ibcclienttypes.Height, timeoutTimestamp uint64, data []byte)
}

type SendPacketOverrideHooks 

type SendPacketOverrideHooks interface {
	SendPacketOverride(i ICS4Middleware, ctx sdk.Context, channelCap *capabilitytypes.Capability, sourcePort string, sourceChannel string, timeoutHeight ibcclienttypes.Height, timeoutTimestamp uint64, data []byte) (sequence uint64, err error)
}

SendPacket Hooks

type WasmHooks 

type WasmHooks struct {
	ContractKeeper *wasmkeeper.Keeper
	// contains filtered or unexported fields
}

func NewWasmHooks 

func NewWasmHooks(ibcHooksKeeper *keeper.Keeper, contractKeeper *wasmkeeper.Keeper, bech32PrefixAccAddr string) WasmHooks

func (WasmHooks) OnAcknowledgementPacketOverride 

func (h WasmHooks) OnAcknowledgementPacketOverride(im IBCMiddleware, ctx sdk.Context, packet channeltypes.Packet, acknowledgement []byte, relayer sdk.AccAddress) error

func (WasmHooks) OnRecvPacketOverride 

func (h WasmHooks) OnRecvPacketOverride(im IBCMiddleware, ctx sdk.Context, packet channeltypes.Packet, relayer sdk.AccAddress) ibcexported.Acknowledgement

func (WasmHooks) OnTimeoutPacketOverride 

func (h WasmHooks) OnTimeoutPacketOverride(im IBCMiddleware, ctx sdk.Context, packet channeltypes.Packet, relayer sdk.AccAddress) error

func (WasmHooks) ProperlyConfigured 

func (h WasmHooks) ProperlyConfigured() bool

func (WasmHooks) SendPacketOverride 

func (h WasmHooks) SendPacketOverride(i ICS4Middleware, ctx sdk.Context, chanCap *capabilitytypes.Capability, sourcePort string, sourceChannel string, timeoutHeight ibcclienttypes.Height, timeoutTimestamp uint64, data []byte) (sequence uint64, err error)

type WriteAcknowledgementAfterHooks 

type WriteAcknowledgementAfterHooks interface {
	WriteAcknowledgementAfterHook(ctx sdk.Context, chanCap *capabilitytypes.Capability, packet ibcexported.PacketI, ack ibcexported.Acknowledgement, err error)
}

type WriteAcknowledgementBeforeHooks 

type WriteAcknowledgementBeforeHooks interface {
	WriteAcknowledgementBeforeHook(ctx sdk.Context, chanCap *capabilitytypes.Capability, packet ibcexported.PacketI, ack ibcexported.Acknowledgement)
}

type WriteAcknowledgementOverrideHooks 

type WriteAcknowledgementOverrideHooks interface {
	WriteAcknowledgementOverride(i ICS4Middleware, ctx sdk.Context, chanCap *capabilitytypes.Capability, packet ibcexported.PacketI, ack ibcexported.Acknowledgement) error
}

WriteAcknowledgement Hooks

Source Files

View all Source files

Directories

Path Synopsis
client
cli
tests
unit/mocks

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