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coordinator.go
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coordinator.go
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package testing
import (
"context"
"fmt"
"testing"
channeltypes "github.com/hyperledger-labs/yui-ibc-solidity/pkg/ibc/channel"
clienttypes "github.com/hyperledger-labs/yui-ibc-solidity/pkg/ibc/client"
"github.com/stretchr/testify/require"
)
type Coordinator struct {
t *testing.T
chains []*Chain
}
func NewCoordinator(t *testing.T, chains ...*Chain) Coordinator {
for _, chain := range chains {
// initialize LastLCState of chain
chain.UpdateHeader()
}
return Coordinator{t: t, chains: chains}
}
func (c Coordinator) GetChain(idx int) *Chain {
return c.chains[idx]
}
// SetupClients is a helper function to create clients on both chains. It assumes the
// caller does not anticipate any errors.
func (coord *Coordinator) SetupClients(
ctx context.Context,
chainA, chainB *Chain,
clientType string,
) (string, string) {
clientA, err := coord.CreateClient(ctx, chainA, chainB, clientType)
require.NoError(coord.t, err)
clientB, err := coord.CreateClient(ctx, chainB, chainA, clientType)
require.NoError(coord.t, err)
return clientA, clientB
}
// SetupClientConnections is a helper function to create clients and the appropriate
// connections on both the source and counterparty chain. It assumes the caller does not
// anticipate any errors.
func (coord *Coordinator) SetupClientConnections(
ctx context.Context,
chainA, chainB *Chain,
clientType string,
) (string, string, *TestConnection, *TestConnection) {
clientA, clientB := coord.SetupClients(ctx, chainA, chainB, clientType)
connA, connB := coord.CreateConnection(ctx, chainA, chainB, clientA, clientB)
return clientA, clientB, connA, connB
}
func (coord *Coordinator) UpdateHeaders() {
for _, c := range coord.chains {
c.UpdateHeader()
}
}
func (c Coordinator) CreateClient(
ctx context.Context,
source, counterparty *Chain,
clientType string,
) (clientID string, err error) {
switch clientType {
case clienttypes.BesuIBFT2Client:
clientID, err = source.CreateIBFT2Client(ctx, counterparty)
case clienttypes.MockClient:
clientID, err = source.CreateMockClient(ctx, counterparty)
default:
err = fmt.Errorf("client type %s is not supported", clientType)
}
if err != nil {
return "", err
}
return clientID, nil
}
func (c Coordinator) UpdateClient(
ctx context.Context,
source, counterparty *Chain,
clientID string,
) error {
var err error
switch counterparty.ClientType() {
case clienttypes.BesuIBFT2Client:
err = source.UpdateIBFT2Client(ctx, counterparty, clientID)
case clienttypes.MockClient:
err = source.UpdateMockClient(ctx, counterparty, clientID)
default:
err = fmt.Errorf("client type %s is not supported", counterparty.ClientType())
}
if err != nil {
return err
}
return nil
}
// CreateConnection constructs and executes connection handshake messages in order to create
// OPEN channels on chainA and chainB. The connection information of for chainA and chainB
// are returned within a TestConnection struct. The function expects the connections to be
// successfully opened otherwise testing will fail.
func (c *Coordinator) CreateConnection(
ctx context.Context,
chainA, chainB *Chain,
clientA, clientB string,
) (*TestConnection, *TestConnection) {
connA, connB, err := c.ConnOpenInit(ctx, chainA, chainB, clientA, clientB)
require.NoError(c.t, err)
require.NoError(c.t, c.ConnOpenTry(ctx, chainB, chainA, connB, connA))
require.NoError(c.t, c.ConnOpenAck(ctx, chainA, chainB, connA, connB))
require.NoError(c.t, c.ConnOpenConfirm(ctx, chainB, chainA, connB, connA))
return connA, connB
}
// CreateChannel constructs and executes channel handshake messages in order to create
// OPEN channels on chainA and chainB. The function expects the channels to be successfully
// opened otherwise testing will fail.
func (c *Coordinator) CreateChannel(
ctx context.Context,
chainA, chainB *Chain,
connA, connB *TestConnection,
sourcePortID, counterpartyPortID string,
order channeltypes.Channel_Order,
) (TestChannel, TestChannel) {
channelA, channelB, err := c.ChanOpenInit(ctx, chainA, chainB, connA, connB, sourcePortID, counterpartyPortID, order)
require.NoError(c.t, err)
err = c.ChanOpenTry(ctx, chainB, chainA, &channelB, &channelA, connB, order)
require.NoError(c.t, err)
err = c.ChanOpenAck(ctx, chainA, chainB, channelA, channelB)
require.NoError(c.t, err)
err = c.ChanOpenConfirm(ctx, chainB, chainA, channelB, channelA)
require.NoError(c.t, err)
return channelA, channelB
}
// CloseChannel constructs and executes channel closing messages in order to transition
// the channel to the CLOSED state on chainA and chainB.
// The function expects the channels to be successfully closed otherwise testing will fail.
func (c *Coordinator) CloseChannel(
ctx context.Context,
chainA, chainB *Chain,
chanA, chanB TestChannel,
) {
err := c.ChanCloseInit(ctx, chainA, chainB, chanA)
require.NoError(c.t, err)
err = c.ChanCloseConfirm(ctx, chainB, chainA, chanB, chanA)
require.NoError(c.t, err)
}
// ConnOpenInit initializes a connection on the source chain with the state INIT
// using the OpenInit handshake call.
//
// NOTE: The counterparty testing connection will be created even if it is not created in the
// application state.
func (c Coordinator) ConnOpenInit(
ctx context.Context,
source, counterparty *Chain,
clientID, counterpartyClientID string,
) (*TestConnection, *TestConnection, error) {
sourceConnection := source.AddTestConnection(clientID, counterpartyClientID)
counterpartyConnection := counterparty.AddTestConnection(counterpartyClientID, clientID)
// initialize connection on source
if connID, err := source.ConnectionOpenInit(ctx, counterparty, sourceConnection, counterpartyConnection); err != nil {
return sourceConnection, counterpartyConnection, err
} else {
sourceConnection.ID = connID
}
source.UpdateHeader()
// update source client on counterparty connection
if err := c.UpdateClient(
ctx,
counterparty, source,
counterpartyClientID,
); err != nil {
return sourceConnection, counterpartyConnection, err
}
return sourceConnection, counterpartyConnection, nil
}
// ConnOpenTry initializes a connection on the source chain with the state TRYOPEN
// using the OpenTry handshake call.
func (c *Coordinator) ConnOpenTry(
ctx context.Context,
source, counterparty *Chain,
sourceConnection, counterpartyConnection *TestConnection,
) error {
if connID, err := source.ConnectionOpenTry(ctx, counterparty, sourceConnection, counterpartyConnection); err != nil {
return err
} else {
sourceConnection.ID = connID
}
source.UpdateHeader()
return c.UpdateClient(
ctx,
counterparty, source,
counterpartyConnection.ClientID,
)
}
// ConnOpenAck initializes a connection on the source chain with the state OPEN
// using the OpenAck handshake call.
func (c *Coordinator) ConnOpenAck(
ctx context.Context,
source, counterparty *Chain,
sourceConnection, counterpartyConnection *TestConnection,
) error {
// set OPEN connection on source using OpenAck
if err := source.ConnectionOpenAck(ctx, counterparty, sourceConnection, counterpartyConnection); err != nil {
return err
}
source.UpdateHeader()
// update source client on counterparty connection
return c.UpdateClient(
ctx,
counterparty, source,
counterpartyConnection.ClientID,
)
}
// ConnOpenConfirm initializes a connection on the source chain with the state OPEN
// using the OpenConfirm handshake call.
func (c *Coordinator) ConnOpenConfirm(
ctx context.Context,
source, counterparty *Chain,
sourceConnection, counterpartyConnection *TestConnection,
) error {
if err := source.ConnectionOpenConfirm(ctx, counterparty, sourceConnection, counterpartyConnection); err != nil {
return err
}
source.UpdateHeader()
// update source client on counterparty connection
return c.UpdateClient(
ctx,
counterparty, source,
counterpartyConnection.ClientID,
)
}
// ChanOpenInit initializes a channel on the source chain with the state INIT
// using the OpenInit handshake call.
//
// NOTE: The counterparty testing channel will be created even if it is not created in the
// application state.
func (c *Coordinator) ChanOpenInit(
ctx context.Context,
source, counterparty *Chain,
connection, counterpartyConnection *TestConnection,
sourcePortID, counterpartyPortID string,
order channeltypes.Channel_Order,
) (TestChannel, TestChannel, error) {
sourceChannel := source.AddTestChannel(connection, sourcePortID)
counterpartyChannel := counterparty.AddTestChannel(counterpartyConnection, counterpartyPortID)
if channelID, err := source.ChannelOpenInit(ctx, sourceChannel, counterpartyChannel, order, connection.ID); err != nil {
return sourceChannel, counterpartyChannel, err
} else {
sourceChannel.ID = channelID
}
source.UpdateHeader()
// update source client on counterparty connection
err := c.UpdateClient(
ctx,
counterparty, source,
counterpartyConnection.ClientID,
)
return sourceChannel, counterpartyChannel, err
}
// ChanOpenTry relays notice of a channel open attempt on chain A to chain B (this
// code is executed on chain B).
func (c *Coordinator) ChanOpenTry(
ctx context.Context,
source, counterparty *Chain,
sourceChannel, counterpartyChannel *TestChannel,
connection *TestConnection,
order channeltypes.Channel_Order,
) error {
// initialize channel on source
if channelID, err := source.ChannelOpenTry(ctx, counterparty, *sourceChannel, *counterpartyChannel, order, connection.ID); err != nil {
return err
} else {
sourceChannel.ID = channelID
}
source.UpdateHeader()
// update source client on counterparty connection
return c.UpdateClient(
ctx,
counterparty, source,
connection.CounterpartyClientID,
)
}
// ChanOpenAck relays acceptance of a channel open attempt from chain B back
// to chain A (this code is executed on chain A).
func (c *Coordinator) ChanOpenAck(
ctx context.Context,
source, counterparty *Chain,
sourceChannel, counterpartyChannel TestChannel,
) error {
if err := source.ChannelOpenAck(ctx, counterparty, sourceChannel, counterpartyChannel); err != nil {
return err
}
source.UpdateHeader()
// update source client on counterparty connection
return c.UpdateClient(
ctx,
counterparty, source,
sourceChannel.CounterpartyClientID,
)
}
// ChanOpenConfirm confirms opening of a channel on chain A to chain B, after
// which the channel is open on both chains (this code is executed on chain B).
func (c *Coordinator) ChanOpenConfirm(
ctx context.Context,
source, counterparty *Chain,
sourceChannel, counterpartyChannel TestChannel,
) error {
if err := source.ChannelOpenConfirm(ctx, counterparty, sourceChannel, counterpartyChannel); err != nil {
return err
}
source.UpdateHeader()
return c.UpdateClient(
ctx,
counterparty, source,
sourceChannel.CounterpartyClientID,
)
}
// ChanCloseInit closes a channel on chain A to chain B (this code is executed on chain A).
func (c *Coordinator) ChanCloseInit(
ctx context.Context,
source, counterparty *Chain,
sourceChannel TestChannel,
) error {
if err := source.ChannelCloseInit(ctx, sourceChannel); err != nil {
return err
}
source.UpdateHeader()
return c.UpdateClient(
ctx,
counterparty, source,
sourceChannel.CounterpartyClientID,
)
}
// ChanCloseConfirm confirms closing of a channel on chain A to chain B, after
// which the channel is closed on both chains (this code is executed on chain B).
func (c *Coordinator) ChanCloseConfirm(
ctx context.Context,
source, counterparty *Chain,
sourceChannel, counterpartyChannel TestChannel,
) error {
if err := source.ChannelCloseConfirm(ctx, counterparty, sourceChannel, counterpartyChannel); err != nil {
return err
}
source.UpdateHeader()
return c.UpdateClient(
ctx,
counterparty, source,
sourceChannel.CounterpartyClientID,
)
}
// SendPacket sends a packet through the channel keeper on the source chain and updates the
// counterparty client for the source chain.
func (c *Coordinator) SendPacket(
ctx context.Context,
source, counterparty *Chain,
packet channeltypes.Packet,
counterpartyClientID string,
) error {
if err := source.SendPacket(ctx, packet); err != nil {
return err
}
source.UpdateHeader()
// update source client on counterparty connection
return c.UpdateClient(
ctx,
counterparty, source,
counterpartyClientID,
)
}
func (c *Coordinator) HandlePacketRecv(
ctx context.Context,
source, counterparty *Chain,
sourceChannel, counterpartyChannel TestChannel,
packet channeltypes.Packet,
) error {
if err := source.HandlePacketRecv(ctx, counterparty, sourceChannel, counterpartyChannel, packet); err != nil {
return err
}
source.UpdateHeader()
// update source client on counterparty connection
return c.UpdateClient(
ctx,
counterparty, source,
counterpartyChannel.ClientID,
)
}
func (c *Coordinator) HandlePacketAcknowledgement(
ctx context.Context,
source, counterparty *Chain,
sourceChannel, counterpartyChannel TestChannel,
packet channeltypes.Packet,
acknowledgement []byte,
) error {
if err := source.HandlePacketAcknowledgement(ctx, counterparty, sourceChannel, counterpartyChannel, packet, acknowledgement); err != nil {
return err
}
source.UpdateHeader()
// update source client on counterparty connection
return c.UpdateClient(
ctx,
counterparty, source,
counterpartyChannel.ClientID,
)
}