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path_processor_internal.go
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path_processor_internal.go
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package processor
import (
"bytes"
"context"
"errors"
"fmt"
"sort"
"sync"
conntypes "github.com/cosmos/ibc-go/v8/modules/core/03-connection/types"
chantypes "github.com/cosmos/ibc-go/v8/modules/core/04-channel/types"
"github.com/cosmos/relayer/v2/relayer/provider"
"go.uber.org/zap"
"golang.org/x/sync/errgroup"
)
// preInitKey is used to declare intent to initialize a connection or channel handshake
// i.e. a MsgConnectionOpenInit or a MsgChannelOpenInit should be broadcasted to start
// the handshake if this key exists in the relevant cache.
const (
preInitKey = "pre_init"
preCloseKey = "pre_close"
)
// getMessagesToSend returns only the lowest sequence message (if it should be sent) for ordered channels,
// otherwise returns all which should be sent.
func (pp *PathProcessor) getMessagesToSend(
ctx context.Context,
msgs []packetIBCMessage,
src, dst *pathEndRuntime,
) (srcMsgs []packetIBCMessage, dstMsgs []packetIBCMessage) {
if len(msgs) == 0 {
return
}
ordered := false
// channelStateCache most likely has the ordering information.
if cs, ok := src.channelStateCache[packetInfoChannelKey(msgs[0].info)]; ok && cs.Order == chantypes.ORDERED {
ordered = true
}
// if packet info has the order defined, use that.
if msgs[0].info.ChannelOrder != "" && msgs[0].info.ChannelOrder != chantypes.NONE.String() {
ordered = msgs[0].info.ChannelOrder == chantypes.ORDERED.String()
}
if ordered {
eventMessages := make(map[string][]packetIBCMessage)
lowestSeq := make(map[string]uint64)
for _, m := range msgs {
eventMessages[m.eventType] = append(eventMessages[m.eventType], m)
switch m.eventType {
case chantypes.EventTypeRecvPacket:
dstChan, dstPort := m.info.DestChannel, m.info.DestPort
res, err := dst.chainProvider.QueryNextSeqRecv(ctx, 0, dstChan, dstPort)
if err != nil {
dst.log.Error("Failed to query next sequence recv",
zap.String("channel_id", dstChan),
zap.String("port_id", dstPort),
zap.Error(err),
)
return
}
lowestSeq[chantypes.EventTypeRecvPacket] = res.NextSequenceReceive
case chantypes.EventTypeAcknowledgePacket:
srcChan, srcPort := m.info.SourceChannel, m.info.SourcePort
res, err := src.chainProvider.QueryNextSeqAck(ctx, 0, srcChan, srcPort)
if err != nil {
src.log.Error("Failed to query next sequence ack",
zap.String("channel_id", srcChan),
zap.String("port_id", srcPort),
zap.Error(err),
)
return
}
lowestSeq[chantypes.EventTypeAcknowledgePacket] = res.NextSequenceReceive
}
}
for e, m := range eventMessages {
m := m
sort.SliceStable(m, func(i, j int) bool {
return m[i].info.Sequence < m[j].info.Sequence
})
foundFirst := false
MsgLoop:
for _, msg := range m {
if e == chantypes.EventTypeRecvPacket || e == chantypes.EventTypeAcknowledgePacket {
if msg.info.Sequence < lowestSeq[e] {
// TODO prune these from caches
continue MsgLoop
} else if msg.info.Sequence > lowestSeq[e] && !foundFirst {
switch e {
case chantypes.EventTypeRecvPacket:
dst.log.Debug("Not yet ready to relay this recv sequence",
zap.String("channel_id", msg.info.DestChannel),
zap.String("port_id", msg.info.DestPort),
zap.Uint64("expected", lowestSeq[e]),
zap.Uint64("actual", msg.info.Sequence),
)
case chantypes.EventTypeAcknowledgePacket:
src.log.Debug("Not yet ready to relay this ack sequence",
zap.String("channel_id", msg.info.SourceChannel),
zap.String("port_id", msg.info.SourcePort),
zap.Uint64("expected", lowestSeq[e]),
zap.Uint64("actual", msg.info.Sequence),
)
}
break MsgLoop
}
}
switch e {
case chantypes.EventTypeRecvPacket:
if len(dstMsgs) > 0 && dstMsgs[len(dstMsgs)-1].eventType == e && dstMsgs[len(dstMsgs)-1].info.Sequence != msg.info.Sequence-1 {
dst.log.Debug("Skipping non-consecutive packet(s)",
zap.String("event_type", e),
zap.String("channel_id", msg.info.DestChannel),
zap.String("port_id", msg.info.DestChannel),
zap.Uint64("seq", msg.info.Sequence),
zap.Uint64("prior_seq", dstMsgs[len(dstMsgs)-1].info.Sequence),
)
break MsgLoop
}
if uint64(len(dstMsgs)) <= pp.maxMsgs && dst.shouldSendPacketMessage(msg, src) {
dst.log.Debug("Appending packet",
zap.String("event_type", e),
zap.String("channel_id", msg.info.DestChannel),
zap.String("port_id", msg.info.DestChannel),
zap.Uint64("seq", msg.info.Sequence),
)
dstMsgs = append(dstMsgs, msg)
if e == chantypes.EventTypeRecvPacket && msg.info.Sequence == lowestSeq[e] {
foundFirst = true
}
}
default:
if len(srcMsgs) > 0 && srcMsgs[len(srcMsgs)-1].eventType == e && srcMsgs[len(srcMsgs)-1].info.Sequence != msg.info.Sequence-1 {
src.log.Debug("Skipping non-consecutive packet(s)",
zap.String("event_type", e),
zap.String("channel_id", msg.info.SourceChannel),
zap.String("port_id", msg.info.SourcePort),
zap.Uint64("seq", msg.info.Sequence),
zap.Uint64("prior_seq", srcMsgs[len(srcMsgs)-1].info.Sequence),
)
break MsgLoop
}
if uint64(len(srcMsgs)) <= pp.maxMsgs && src.shouldSendPacketMessage(msg, dst) {
src.log.Debug("Appending packet",
zap.String("event_type", e),
zap.String("channel_id", msg.info.SourceChannel),
zap.String("port_id", msg.info.SourcePort),
zap.Uint64("seq", msg.info.Sequence),
)
srcMsgs = append(srcMsgs, msg)
if e == chantypes.EventTypeAcknowledgePacket && msg.info.Sequence == lowestSeq[e] {
foundFirst = true
}
}
}
}
}
return srcMsgs, dstMsgs
}
// for unordered channels, don't need to worry about sequence ordering.
for _, msg := range msgs {
switch msg.eventType {
case chantypes.EventTypeRecvPacket:
if uint64(len(dstMsgs)) <= pp.maxMsgs && dst.shouldSendPacketMessage(msg, src) {
dstMsgs = append(dstMsgs, msg)
}
default:
if uint64(len(srcMsgs)) <= pp.maxMsgs && src.shouldSendPacketMessage(msg, dst) {
srcMsgs = append(srcMsgs, msg)
}
}
}
return srcMsgs, dstMsgs
}
func (pp *PathProcessor) unrelayedPacketFlowMessages(
ctx context.Context,
pathEndPacketFlowMessages pathEndPacketFlowMessages,
) pathEndPacketFlowResponse {
var (
res pathEndPacketFlowResponse
msgs []packetIBCMessage
toDeleteSrc = make(map[string][]uint64)
toDeleteDst = make(map[string][]uint64)
toDeleteDstChannel = make(map[string][]ChannelKey)
)
k := pathEndPacketFlowMessages.ChannelKey
deletePreInitIfMatches := func(info provider.PacketInfo) {
cachedInfo, ok := pathEndPacketFlowMessages.SrcPreTransfer[0]
if !ok {
return
}
if !bytes.Equal(cachedInfo.Data, info.Data) {
return
}
toDeleteSrc[preInitKey] = []uint64{0}
}
processRemovals := func() {
pathEndPacketFlowMessages.Src.messageCache.PacketFlow[k].DeleteMessages(toDeleteSrc)
pathEndPacketFlowMessages.Dst.messageCache.PacketFlow[k.Counterparty()].DeleteMessages(toDeleteDst)
pathEndPacketFlowMessages.Dst.messageCache.ChannelHandshake.DeleteMessages(toDeleteDstChannel)
pathEndPacketFlowMessages.Src.packetProcessing[k].deleteMessages(toDeleteSrc)
pathEndPacketFlowMessages.Dst.packetProcessing[k.Counterparty()].deleteMessages(toDeleteDst)
pathEndPacketFlowMessages.Dst.channelProcessing.deleteMessages(toDeleteDstChannel)
toDeleteSrc = make(map[string][]uint64)
toDeleteDst = make(map[string][]uint64)
toDeleteDstChannel = make(map[string][]ChannelKey)
}
for seq, info := range pathEndPacketFlowMessages.SrcMsgAcknowledgement {
// we have observed an ack on chain for this packet, so packet flow is complete
// remove all retention of this sequence number
deletePreInitIfMatches(info)
toDeleteSrc[chantypes.EventTypeSendPacket] = append(toDeleteSrc[chantypes.EventTypeSendPacket], seq)
toDeleteDst[chantypes.EventTypeRecvPacket] = append(toDeleteDst[chantypes.EventTypeRecvPacket], seq)
toDeleteDst[chantypes.EventTypeWriteAck] = append(toDeleteDst[chantypes.EventTypeWriteAck], seq)
toDeleteSrc[chantypes.EventTypeAcknowledgePacket] = append(toDeleteSrc[chantypes.EventTypeAcknowledgePacket], seq)
}
for seq, info := range pathEndPacketFlowMessages.SrcMsgTimeout {
deletePreInitIfMatches(info)
toDeleteSrc[chantypes.EventTypeSendPacket] = append(toDeleteSrc[chantypes.EventTypeSendPacket], seq)
toDeleteSrc[chantypes.EventTypeTimeoutPacket] = append(toDeleteSrc[chantypes.EventTypeTimeoutPacket], seq)
if info.ChannelOrder == chantypes.ORDERED.String() {
// Channel is now closed on src.
// enqueue channel close init observation to be handled by channel close correlation
if _, ok := pathEndPacketFlowMessages.Src.messageCache.ChannelHandshake[chantypes.EventTypeChannelCloseInit]; !ok {
pathEndPacketFlowMessages.Src.messageCache.ChannelHandshake[chantypes.EventTypeChannelCloseInit] = make(ChannelMessageCache)
}
pathEndPacketFlowMessages.Src.messageCache.ChannelHandshake[chantypes.EventTypeChannelCloseInit][k] = provider.ChannelInfo{
Height: info.Height,
PortID: info.SourcePort,
ChannelID: info.SourceChannel,
CounterpartyPortID: info.DestPort,
CounterpartyChannelID: info.DestChannel,
Order: orderFromString(info.ChannelOrder),
}
}
}
processRemovals()
for seq, info := range pathEndPacketFlowMessages.DstMsgRecvPacket {
deletePreInitIfMatches(info)
toDeleteSrc[chantypes.EventTypeSendPacket] = append(toDeleteSrc[chantypes.EventTypeSendPacket], seq)
if len(info.Ack) == 0 {
// have recv_packet but not write_acknowledgement yet. skip for now.
continue
}
// msg is received by dst chain, but no ack yet. Need to relay ack from dst to src!
ackMsg := packetIBCMessage{
eventType: chantypes.EventTypeAcknowledgePacket,
info: info,
}
msgs = append(msgs, ackMsg)
}
processRemovals()
for _, info := range pathEndPacketFlowMessages.SrcMsgTransfer {
deletePreInitIfMatches(info)
// Packet is not yet relayed! need to relay either MsgRecvPacket from src to dst, or MsgTimeout/MsgTimeoutOnClose from dst to src
if err := pathEndPacketFlowMessages.Dst.chainProvider.ValidatePacket(info, pathEndPacketFlowMessages.Dst.latestBlock); err != nil {
var timeoutHeightErr *provider.TimeoutHeightError
var timeoutTimestampErr *provider.TimeoutTimestampError
switch {
case errors.As(err, &timeoutHeightErr) || errors.As(err, &timeoutTimestampErr):
timeoutMsg := packetIBCMessage{
eventType: chantypes.EventTypeTimeoutPacket,
info: info,
}
msgs = append(msgs, timeoutMsg)
default:
pp.log.Error("Packet is invalid",
zap.String("chain_id", pathEndPacketFlowMessages.Src.info.ChainID),
zap.Error(err),
)
}
continue
}
recvPacketMsg := packetIBCMessage{
eventType: chantypes.EventTypeRecvPacket,
info: info,
}
msgs = append(msgs, recvPacketMsg)
}
processRemovals()
for _, info := range pathEndPacketFlowMessages.SrcPreTransfer {
msgTransfer := packetIBCMessage{
eventType: chantypes.EventTypeSendPacket,
info: info,
}
msgs = append(msgs, msgTransfer)
}
res.SrcMessages, res.DstMessages = pp.getMessagesToSend(
ctx,
msgs,
pathEndPacketFlowMessages.Src,
pathEndPacketFlowMessages.Dst,
)
return res
}
func (pp *PathProcessor) unrelayedConnectionHandshakeMessages(
pathEndConnectionHandshakeMessages pathEndConnectionHandshakeMessages,
) pathEndConnectionHandshakeResponse {
var (
res pathEndConnectionHandshakeResponse
toDeleteSrc = make(map[string][]ConnectionKey)
toDeleteDst = make(map[string][]ConnectionKey)
)
processRemovals := func() {
pathEndConnectionHandshakeMessages.Src.messageCache.ConnectionHandshake.DeleteMessages(toDeleteSrc)
pathEndConnectionHandshakeMessages.Dst.messageCache.ConnectionHandshake.DeleteMessages(toDeleteDst)
pathEndConnectionHandshakeMessages.Src.connProcessing.deleteMessages(toDeleteSrc)
pathEndConnectionHandshakeMessages.Dst.connProcessing.deleteMessages(toDeleteDst)
toDeleteSrc = make(map[string][]ConnectionKey)
toDeleteDst = make(map[string][]ConnectionKey)
}
for connKey := range pathEndConnectionHandshakeMessages.DstMsgConnectionOpenConfirm {
// found open confirm, channel handshake complete. remove all retention
counterpartyKey := connKey.Counterparty()
toDeleteDst[conntypes.EventTypeConnectionOpenConfirm] = append(
toDeleteDst[conntypes.EventTypeConnectionOpenConfirm],
connKey,
)
toDeleteSrc[conntypes.EventTypeConnectionOpenAck] = append(
toDeleteSrc[conntypes.EventTypeConnectionOpenAck],
counterpartyKey,
)
toDeleteDst[conntypes.EventTypeConnectionOpenTry] = append(
toDeleteDst[conntypes.EventTypeConnectionOpenTry],
connKey,
)
// MsgConnectionOpenInit does not have CounterpartyConnectionID
toDeleteSrc[conntypes.EventTypeConnectionOpenInit] = append(
toDeleteSrc[conntypes.EventTypeConnectionOpenInit],
counterpartyKey.MsgInitKey(),
)
toDeleteSrc[preInitKey] = append(toDeleteSrc[preInitKey], counterpartyKey.PreInitKey())
}
processRemovals()
for connKey, info := range pathEndConnectionHandshakeMessages.SrcMsgConnectionOpenAck {
// need to send an open confirm to dst
msgOpenConfirm := connectionIBCMessage{
eventType: conntypes.EventTypeConnectionOpenConfirm,
info: info,
}
if pathEndConnectionHandshakeMessages.Dst.shouldSendConnectionMessage(
msgOpenConfirm,
pathEndConnectionHandshakeMessages.Src,
) {
res.DstMessages = append(res.DstMessages, msgOpenConfirm)
}
toDeleteDst[conntypes.EventTypeConnectionOpenTry] = append(
toDeleteDst[conntypes.EventTypeConnectionOpenTry], connKey.Counterparty(),
)
// MsgConnectionOpenInit does not have CounterpartyConnectionID
toDeleteSrc[conntypes.EventTypeConnectionOpenInit] = append(
toDeleteSrc[conntypes.EventTypeConnectionOpenInit], connKey.MsgInitKey(),
)
toDeleteSrc[preInitKey] = append(toDeleteSrc[preInitKey], connKey.PreInitKey())
}
processRemovals()
for connKey, info := range pathEndConnectionHandshakeMessages.DstMsgConnectionOpenTry {
// need to send an open ack to src
msgOpenAck := connectionIBCMessage{
eventType: conntypes.EventTypeConnectionOpenAck,
info: info,
}
if pathEndConnectionHandshakeMessages.Src.shouldSendConnectionMessage(
msgOpenAck, pathEndConnectionHandshakeMessages.Dst,
) {
res.SrcMessages = append(res.SrcMessages, msgOpenAck)
}
counterpartyKey := connKey.Counterparty()
// MsgConnectionOpenInit does not have CounterpartyConnectionID
toDeleteSrc[conntypes.EventTypeConnectionOpenInit] = append(
toDeleteSrc[conntypes.EventTypeConnectionOpenInit], counterpartyKey.MsgInitKey(),
)
toDeleteSrc[preInitKey] = append(toDeleteSrc[preInitKey], counterpartyKey.PreInitKey())
}
processRemovals()
for connKey, info := range pathEndConnectionHandshakeMessages.SrcMsgConnectionOpenInit {
// need to send an open try to dst
msgOpenTry := connectionIBCMessage{
eventType: conntypes.EventTypeConnectionOpenTry,
info: info,
}
if pathEndConnectionHandshakeMessages.Dst.shouldSendConnectionMessage(
msgOpenTry, pathEndConnectionHandshakeMessages.Src,
) {
res.DstMessages = append(res.DstMessages, msgOpenTry)
}
// MsgConnectionOpenInit does not have CounterpartyConnectionID
toDeleteSrc[preInitKey] = append(toDeleteSrc[preInitKey], connKey.PreInitKey())
}
processRemovals()
for _, info := range pathEndConnectionHandshakeMessages.SrcMsgConnectionPreInit {
// need to send an open init to src
msgOpenInit := connectionIBCMessage{
eventType: conntypes.EventTypeConnectionOpenInit,
info: info,
}
if pathEndConnectionHandshakeMessages.Src.shouldSendConnectionMessage(
msgOpenInit, pathEndConnectionHandshakeMessages.Dst,
) {
res.SrcMessages = append(res.SrcMessages, msgOpenInit)
}
}
return res
}
func (pp *PathProcessor) unrelayedChannelHandshakeMessages(
pathEndChannelHandshakeMessages pathEndChannelHandshakeMessages,
) pathEndChannelHandshakeResponse {
var (
res pathEndChannelHandshakeResponse
toDeleteSrc = make(map[string][]ChannelKey)
toDeleteDst = make(map[string][]ChannelKey)
)
processRemovals := func() {
pathEndChannelHandshakeMessages.Src.messageCache.ChannelHandshake.DeleteMessages(toDeleteSrc)
pathEndChannelHandshakeMessages.Dst.messageCache.ChannelHandshake.DeleteMessages(toDeleteDst)
pathEndChannelHandshakeMessages.Src.channelProcessing.deleteMessages(toDeleteSrc)
pathEndChannelHandshakeMessages.Dst.channelProcessing.deleteMessages(toDeleteDst)
toDeleteSrc = make(map[string][]ChannelKey)
toDeleteDst = make(map[string][]ChannelKey)
}
for chanKey := range pathEndChannelHandshakeMessages.DstMsgChannelOpenConfirm {
// found open confirm, channel handshake complete. remove all retention
counterpartyKey := chanKey.Counterparty()
toDeleteDst[chantypes.EventTypeChannelOpenConfirm] = append(
toDeleteDst[chantypes.EventTypeChannelOpenConfirm],
chanKey,
)
toDeleteSrc[chantypes.EventTypeChannelOpenAck] = append(
toDeleteSrc[chantypes.EventTypeChannelOpenAck],
counterpartyKey,
)
toDeleteDst[chantypes.EventTypeChannelOpenTry] = append(
toDeleteDst[chantypes.EventTypeChannelOpenTry],
chanKey,
)
// MsgChannelOpenInit does not have CounterpartyChannelID
toDeleteSrc[chantypes.EventTypeChannelOpenInit] = append(
toDeleteSrc[chantypes.EventTypeChannelOpenInit],
counterpartyKey.MsgInitKey(),
)
toDeleteSrc[preInitKey] = append(toDeleteSrc[preInitKey], counterpartyKey.PreInitKey())
}
processRemovals()
for chanKey, info := range pathEndChannelHandshakeMessages.SrcMsgChannelOpenAck {
// need to send an open confirm to dst
msgOpenConfirm := channelIBCMessage{
eventType: chantypes.EventTypeChannelOpenConfirm,
info: info,
}
if pathEndChannelHandshakeMessages.Dst.shouldSendChannelMessage(
msgOpenConfirm,
pathEndChannelHandshakeMessages.Src,
) {
res.DstMessages = append(res.DstMessages, msgOpenConfirm)
}
toDeleteDst[chantypes.EventTypeChannelOpenTry] = append(
toDeleteDst[chantypes.EventTypeChannelOpenTry], chanKey.Counterparty(),
)
// MsgChannelOpenInit does not have CounterpartyChannelID
toDeleteSrc[chantypes.EventTypeChannelOpenInit] = append(
toDeleteSrc[chantypes.EventTypeChannelOpenInit], chanKey.MsgInitKey(),
)
toDeleteSrc[preInitKey] = append(toDeleteSrc[preInitKey], chanKey.PreInitKey())
}
processRemovals()
for chanKey, info := range pathEndChannelHandshakeMessages.DstMsgChannelOpenTry {
// need to send an open ack to src
msgOpenAck := channelIBCMessage{
eventType: chantypes.EventTypeChannelOpenAck,
info: info,
}
if pathEndChannelHandshakeMessages.Src.shouldSendChannelMessage(
msgOpenAck, pathEndChannelHandshakeMessages.Dst,
) {
res.SrcMessages = append(res.SrcMessages, msgOpenAck)
}
counterpartyKey := chanKey.Counterparty()
// MsgChannelOpenInit does not have CounterpartyChannelID
toDeleteSrc[chantypes.EventTypeChannelOpenInit] = append(
toDeleteSrc[chantypes.EventTypeChannelOpenInit], counterpartyKey.MsgInitKey(),
)
toDeleteSrc[preInitKey] = append(toDeleteSrc[preInitKey], counterpartyKey.PreInitKey())
}
processRemovals()
for chanKey, info := range pathEndChannelHandshakeMessages.SrcMsgChannelOpenInit {
// need to send an open try to dst
msgOpenTry := channelIBCMessage{
eventType: chantypes.EventTypeChannelOpenTry,
info: info,
}
if pathEndChannelHandshakeMessages.Dst.shouldSendChannelMessage(
msgOpenTry, pathEndChannelHandshakeMessages.Src,
) {
res.DstMessages = append(res.DstMessages, msgOpenTry)
}
// MsgChannelOpenInit does not have CounterpartyChannelID
toDeleteSrc[preInitKey] = append(toDeleteSrc[preInitKey], chanKey.PreInitKey())
}
processRemovals()
for _, info := range pathEndChannelHandshakeMessages.SrcMsgChannelPreInit {
// need to send an open init to src
msgOpenInit := channelIBCMessage{
eventType: chantypes.EventTypeChannelOpenInit,
info: info,
}
if pathEndChannelHandshakeMessages.Src.shouldSendChannelMessage(
msgOpenInit, pathEndChannelHandshakeMessages.Dst,
) {
res.SrcMessages = append(res.SrcMessages, msgOpenInit)
}
}
return res
}
func (pp *PathProcessor) unrelayedChannelCloseMessages(
pathEndChannelCloseMessages pathEndChannelCloseMessages,
) pathEndChannelHandshakeResponse {
var (
res pathEndChannelHandshakeResponse
toDeleteSrc = make(map[string][]ChannelKey)
toDeleteDst = make(map[string][]ChannelKey)
)
processRemovals := func() {
pathEndChannelCloseMessages.Src.messageCache.ChannelHandshake.DeleteMessages(toDeleteSrc)
pathEndChannelCloseMessages.Dst.messageCache.ChannelHandshake.DeleteMessages(toDeleteDst)
pathEndChannelCloseMessages.Src.channelProcessing.deleteMessages(toDeleteSrc)
pathEndChannelCloseMessages.Dst.channelProcessing.deleteMessages(toDeleteDst)
toDeleteSrc = make(map[string][]ChannelKey)
toDeleteDst = make(map[string][]ChannelKey)
}
for chanKey := range pathEndChannelCloseMessages.DstMsgChannelCloseConfirm {
// found close confirm, channel handshake complete. remove all retention
counterpartyKey := chanKey.Counterparty()
toDeleteDst[chantypes.EventTypeChannelCloseConfirm] = append(
toDeleteDst[chantypes.EventTypeChannelCloseConfirm],
chanKey,
)
// MsgChannelCloseInit does not have CounterpartyChannelID // TODO: confirm this
toDeleteSrc[chantypes.EventTypeChannelCloseInit] = append(
toDeleteSrc[chantypes.EventTypeChannelCloseInit],
counterpartyKey.MsgInitKey(),
)
// TODO: confirm chankey does not need modification
toDeleteSrc[preCloseKey] = append(toDeleteSrc[preCloseKey], counterpartyKey)
}
processRemovals()
for chanKey, info := range pathEndChannelCloseMessages.SrcMsgChannelCloseInit {
// need to send a close confirm to dst
msgCloseConfirm := channelIBCMessage{
eventType: chantypes.EventTypeChannelCloseConfirm,
info: info,
}
if pathEndChannelCloseMessages.Dst.shouldSendChannelMessage(
msgCloseConfirm, pathEndChannelCloseMessages.Src,
) {
res.DstMessages = append(res.DstMessages, msgCloseConfirm)
toDeleteSrc[chantypes.EventTypeChannelCloseInit] = append(
toDeleteSrc[chantypes.EventTypeChannelCloseInit],
chanKey,
)
}
// TODO: confirm chankey does not need modification
toDeleteSrc[preCloseKey] = append(toDeleteSrc[preCloseKey], chanKey)
}
processRemovals()
for _, info := range pathEndChannelCloseMessages.SrcMsgChannelPreInit {
// need to send a close init to src
msgCloseInit := channelIBCMessage{
eventType: chantypes.EventTypeChannelCloseInit,
info: info,
}
if pathEndChannelCloseMessages.Src.shouldSendChannelMessage(
msgCloseInit, pathEndChannelCloseMessages.Dst,
) {
res.SrcMessages = append(res.SrcMessages, msgCloseInit)
}
}
return res
}
func (pp *PathProcessor) getUnrelayedClientICQMessages(pathEnd *pathEndRuntime, queryMessages, responseMessages ClientICQMessageCache) (res []clientICQMessage) {
var doneQueryIDs []provider.ClientICQQueryID
ClientICQLoop:
for queryID, queryMsg := range queryMessages {
for resQueryID := range responseMessages {
if queryID == resQueryID {
// done with this query, remove all retention.
doneQueryIDs = append(doneQueryIDs, queryID)
continue ClientICQLoop
}
}
// query ID not found in response messages, check if should send queryMsg and send
if pathEnd.shouldSendClientICQMessage(queryMsg) {
res = append(res, clientICQMessage{
info: queryMsg,
})
}
}
// remove all retention for queries that have been responded to.
for queryID := range responseMessages {
doneQueryIDs = append(doneQueryIDs, queryID)
}
pathEnd.clientICQProcessing.deleteMessages(doneQueryIDs...)
pathEnd.messageCache.ClientICQ.DeleteMessages(doneQueryIDs...)
// now iterate through completion message and remove any leftover messages.
return res
}
// updateClientTrustedState combines the counterparty chains trusted IBC header
// with the latest client state, which will be used for constructing MsgUpdateClient messages.
func (pp *PathProcessor) updateClientTrustedState(src *pathEndRuntime, dst *pathEndRuntime) {
if src.clientTrustedState.ClientState.ConsensusHeight.GTE(src.clientState.ConsensusHeight) {
// current height already trusted
return
}
// need to assemble new trusted state
ibcHeader, ok := dst.ibcHeaderCache[src.clientState.ConsensusHeight.RevisionHeight+1]
if !ok {
if ibcHeaderCurrent, ok := dst.ibcHeaderCache[src.clientState.ConsensusHeight.RevisionHeight]; ok &&
dst.clientTrustedState.IBCHeader != nil &&
bytes.Equal(dst.clientTrustedState.IBCHeader.NextValidatorsHash(), ibcHeaderCurrent.NextValidatorsHash()) {
src.clientTrustedState = provider.ClientTrustedState{
ClientState: src.clientState,
IBCHeader: ibcHeaderCurrent,
}
return
}
pp.log.Debug("No cached IBC header for client trusted height",
zap.String("chain_id", src.info.ChainID),
zap.String("client_id", src.info.ClientID),
zap.Uint64("height", src.clientState.ConsensusHeight.RevisionHeight+1),
)
return
}
src.clientTrustedState = provider.ClientTrustedState{
ClientState: src.clientState,
IBCHeader: ibcHeader,
}
}
var observedEventTypeForDesiredMessage = map[string]string{
conntypes.EventTypeConnectionOpenConfirm: conntypes.EventTypeConnectionOpenAck,
conntypes.EventTypeConnectionOpenAck: conntypes.EventTypeConnectionOpenTry,
conntypes.EventTypeConnectionOpenTry: conntypes.EventTypeConnectionOpenInit,
conntypes.EventTypeConnectionOpenInit: preInitKey,
chantypes.EventTypeChannelOpenConfirm: chantypes.EventTypeChannelOpenAck,
chantypes.EventTypeChannelOpenAck: chantypes.EventTypeChannelOpenTry,
chantypes.EventTypeChannelOpenTry: chantypes.EventTypeChannelOpenInit,
chantypes.EventTypeChannelOpenInit: preInitKey,
chantypes.EventTypeAcknowledgePacket: chantypes.EventTypeRecvPacket,
chantypes.EventTypeRecvPacket: chantypes.EventTypeSendPacket,
chantypes.EventTypeSendPacket: preInitKey,
}
func (pp *PathProcessor) queuePreInitMessages(cancel func()) {
if pp.messageLifecycle == nil || pp.sentInitialMsg {
return
}
switch m := pp.messageLifecycle.(type) {
case *PacketMessageLifecycle:
pp.sentInitialMsg = true
if m.Initial == nil {
return
}
channelKey, err := PacketInfoChannelKey(m.Initial.EventType, m.Initial.Info)
if err != nil {
pp.log.Error("Unexpected error checking packet message",
zap.String("event_type", m.Termination.EventType),
zap.Inline(channelKey),
zap.Error(err),
)
cancel()
return
}
if !pp.IsRelayedChannel(m.Initial.ChainID, channelKey) {
return
}
eventType, ok := observedEventTypeForDesiredMessage[m.Initial.EventType]
if !ok {
pp.log.Error(
"Failed to queue initial connection message, event type not handled",
zap.String("event_type", m.Initial.EventType),
)
cancel()
return
}
if m.Initial.ChainID == pp.pathEnd1.info.ChainID {
_, ok = pp.pathEnd1.messageCache.PacketFlow[channelKey][eventType]
if !ok {
pp.pathEnd1.messageCache.PacketFlow[channelKey][eventType] = make(PacketSequenceCache)
}
pp.pathEnd1.messageCache.PacketFlow[channelKey][eventType][0] = m.Initial.Info
} else if m.Initial.ChainID == pp.pathEnd2.info.ChainID {
_, ok = pp.pathEnd2.messageCache.PacketFlow[channelKey][eventType]
if !ok {
pp.pathEnd2.messageCache.PacketFlow[channelKey][eventType] = make(PacketSequenceCache)
}
pp.pathEnd2.messageCache.PacketFlow[channelKey][eventType][0] = m.Initial.Info
}
case *ConnectionMessageLifecycle:
pp.sentInitialMsg = true
if m.Initial == nil {
return
}
if !pp.IsRelevantClient(m.Initial.ChainID, m.Initial.Info.ClientID) {
return
}
eventType, ok := observedEventTypeForDesiredMessage[m.Initial.EventType]
if !ok {
pp.log.Error(
"Failed to queue initial connection message, event type not handled",
zap.String("event_type", m.Initial.EventType),
)
cancel()
return
}
connKey := ConnectionInfoConnectionKey(m.Initial.Info)
if m.Initial.ChainID == pp.pathEnd1.info.ChainID {
_, ok = pp.pathEnd1.messageCache.ConnectionHandshake[eventType]
if !ok {
pp.pathEnd1.messageCache.ConnectionHandshake[eventType] = make(ConnectionMessageCache)
}
pp.pathEnd1.messageCache.ConnectionHandshake[eventType][connKey] = m.Initial.Info
} else if m.Initial.ChainID == pp.pathEnd2.info.ChainID {
_, ok = pp.pathEnd2.messageCache.ConnectionHandshake[eventType]
if !ok {
pp.pathEnd2.messageCache.ConnectionHandshake[eventType] = make(ConnectionMessageCache)
}
pp.pathEnd2.messageCache.ConnectionHandshake[eventType][connKey] = m.Initial.Info
}
case *ChannelMessageLifecycle:
pp.sentInitialMsg = true
if m.Initial == nil {
return
}
if !pp.IsRelevantConnection(m.Initial.ChainID, m.Initial.Info.ConnID) {
return
}
eventType, ok := observedEventTypeForDesiredMessage[m.Initial.EventType]
if !ok {
pp.log.Error(
"Failed to queue initial channel message, event type not handled",
zap.String("event_type", m.Initial.EventType),
)
cancel()
return
}
chanKey := ChannelInfoChannelKey(m.Initial.Info)
if m.Initial.ChainID == pp.pathEnd1.info.ChainID {
_, ok = pp.pathEnd1.messageCache.ChannelHandshake[eventType]
if !ok {
pp.pathEnd1.messageCache.ChannelHandshake[eventType] = make(ChannelMessageCache)
}
pp.pathEnd1.messageCache.ChannelHandshake[eventType][chanKey] = m.Initial.Info
} else if m.Initial.ChainID == pp.pathEnd2.info.ChainID {
_, ok = pp.pathEnd2.messageCache.ChannelHandshake[eventType]
if !ok {
pp.pathEnd2.messageCache.ChannelHandshake[eventType] = make(ChannelMessageCache)
}
pp.pathEnd2.messageCache.ChannelHandshake[eventType][chanKey] = m.Initial.Info
}
case *ChannelCloseLifecycle:
pp.sentInitialMsg = true
if !pp.IsRelevantConnection(pp.pathEnd1.info.ChainID, m.SrcConnID) {
return
}
for k, cs := range pp.pathEnd1.channelStateCache {
if k.ChannelID == m.SrcChannelID && k.PortID == m.SrcPortID && k.CounterpartyChannelID != "" && k.CounterpartyPortID != "" {
if cs.Open {
// channel is still open on pathEnd1
break
}
if counterpartyState, ok := pp.pathEnd2.channelStateCache[k.Counterparty()]; ok && !counterpartyState.Open {
pp.log.Info("Channel already closed on both sides")
cancel()
return
}
// queue channel close init on pathEnd1
if _, ok := pp.pathEnd1.messageCache.ChannelHandshake[chantypes.EventTypeChannelCloseInit]; !ok {
pp.pathEnd1.messageCache.ChannelHandshake[chantypes.EventTypeChannelCloseInit] = make(ChannelMessageCache)
}
pp.pathEnd1.messageCache.ChannelHandshake[chantypes.EventTypeChannelCloseInit][k] = provider.ChannelInfo{
PortID: k.PortID,
ChannelID: k.ChannelID,
CounterpartyPortID: k.CounterpartyPortID,
CounterpartyChannelID: k.CounterpartyChannelID,
ConnID: m.SrcConnID,
}
return
}
}
for k, cs := range pp.pathEnd2.channelStateCache {
if k.CounterpartyChannelID == m.SrcChannelID && k.CounterpartyPortID == m.SrcPortID && k.ChannelID != "" && k.PortID != "" {
if cs.Open {
// channel is still open on pathEnd2
break
}
if counterpartyChanState, ok := pp.pathEnd1.channelStateCache[k.Counterparty()]; ok && !counterpartyChanState.Open {
pp.log.Info("Channel already closed on both sides")
cancel()
return
}
// queue channel close init on pathEnd2
if _, ok := pp.pathEnd2.messageCache.ChannelHandshake[chantypes.EventTypeChannelCloseInit]; !ok {
pp.pathEnd2.messageCache.ChannelHandshake[chantypes.EventTypeChannelCloseInit] = make(ChannelMessageCache)
}
pp.pathEnd2.messageCache.ChannelHandshake[chantypes.EventTypeChannelCloseInit][k] = provider.ChannelInfo{
PortID: k.PortID,
ChannelID: k.ChannelID,
CounterpartyPortID: k.CounterpartyPortID,
CounterpartyChannelID: k.CounterpartyChannelID,
ConnID: m.DstConnID,
}
}
}
pp.log.Error("This channel is unable to be closed. Channel must already be closed on one chain.",
zap.String("src_channel_id", m.SrcChannelID),
zap.String("src_port_id", m.SrcPortID),
)
cancel()
}
}
// messages from both pathEnds are needed in order to determine what needs to be relayed for a single pathEnd
func (pp *PathProcessor) processLatestMessages(ctx context.Context, cancel func()) error {
// Update trusted client state for both pathends
pp.updateClientTrustedState(pp.pathEnd1, pp.pathEnd2)
pp.updateClientTrustedState(pp.pathEnd2, pp.pathEnd1)
channelPairs := pp.channelPairs()
pp.queuePreInitMessages(cancel)
pathEnd1ConnectionHandshakeMessages := pathEndConnectionHandshakeMessages{
Src: pp.pathEnd1,
Dst: pp.pathEnd2,
SrcMsgConnectionPreInit: pp.pathEnd1.messageCache.ConnectionHandshake[preInitKey],
SrcMsgConnectionOpenInit: pp.pathEnd1.messageCache.ConnectionHandshake[conntypes.EventTypeConnectionOpenInit],
DstMsgConnectionOpenTry: pp.pathEnd2.messageCache.ConnectionHandshake[conntypes.EventTypeConnectionOpenTry],
SrcMsgConnectionOpenAck: pp.pathEnd1.messageCache.ConnectionHandshake[conntypes.EventTypeConnectionOpenAck],
DstMsgConnectionOpenConfirm: pp.pathEnd2.messageCache.ConnectionHandshake[conntypes.EventTypeConnectionOpenConfirm],
}
pathEnd2ConnectionHandshakeMessages := pathEndConnectionHandshakeMessages{
Src: pp.pathEnd2,
Dst: pp.pathEnd1,
SrcMsgConnectionPreInit: pp.pathEnd2.messageCache.ConnectionHandshake[preInitKey],
SrcMsgConnectionOpenInit: pp.pathEnd2.messageCache.ConnectionHandshake[conntypes.EventTypeConnectionOpenInit],
DstMsgConnectionOpenTry: pp.pathEnd1.messageCache.ConnectionHandshake[conntypes.EventTypeConnectionOpenTry],
SrcMsgConnectionOpenAck: pp.pathEnd2.messageCache.ConnectionHandshake[conntypes.EventTypeConnectionOpenAck],
DstMsgConnectionOpenConfirm: pp.pathEnd1.messageCache.ConnectionHandshake[conntypes.EventTypeConnectionOpenConfirm],
}
pathEnd1ConnectionHandshakeRes := pp.unrelayedConnectionHandshakeMessages(pathEnd1ConnectionHandshakeMessages)
pathEnd2ConnectionHandshakeRes := pp.unrelayedConnectionHandshakeMessages(pathEnd2ConnectionHandshakeMessages)
pathEnd1ChannelHandshakeMessages := pathEndChannelHandshakeMessages{
Src: pp.pathEnd1,
Dst: pp.pathEnd2,
SrcMsgChannelPreInit: pp.pathEnd1.messageCache.ChannelHandshake[preInitKey],
SrcMsgChannelOpenInit: pp.pathEnd1.messageCache.ChannelHandshake[chantypes.EventTypeChannelOpenInit],
DstMsgChannelOpenTry: pp.pathEnd2.messageCache.ChannelHandshake[chantypes.EventTypeChannelOpenTry],
SrcMsgChannelOpenAck: pp.pathEnd1.messageCache.ChannelHandshake[chantypes.EventTypeChannelOpenAck],
DstMsgChannelOpenConfirm: pp.pathEnd2.messageCache.ChannelHandshake[chantypes.EventTypeChannelOpenConfirm],
}
pathEnd2ChannelHandshakeMessages := pathEndChannelHandshakeMessages{
Src: pp.pathEnd2,
Dst: pp.pathEnd1,
SrcMsgChannelPreInit: pp.pathEnd2.messageCache.ChannelHandshake[preInitKey],
SrcMsgChannelOpenInit: pp.pathEnd2.messageCache.ChannelHandshake[chantypes.EventTypeChannelOpenInit],
DstMsgChannelOpenTry: pp.pathEnd1.messageCache.ChannelHandshake[chantypes.EventTypeChannelOpenTry],
SrcMsgChannelOpenAck: pp.pathEnd2.messageCache.ChannelHandshake[chantypes.EventTypeChannelOpenAck],
DstMsgChannelOpenConfirm: pp.pathEnd1.messageCache.ChannelHandshake[chantypes.EventTypeChannelOpenConfirm],
}
pathEnd1ChannelHandshakeRes := pp.unrelayedChannelHandshakeMessages(pathEnd1ChannelHandshakeMessages)
pathEnd2ChannelHandshakeRes := pp.unrelayedChannelHandshakeMessages(pathEnd2ChannelHandshakeMessages)
// process the packet flows for both path ends to determine what needs to be relayed
pathEnd1ProcessRes := make([]pathEndPacketFlowResponse, len(channelPairs))
pathEnd2ProcessRes := make([]pathEndPacketFlowResponse, len(channelPairs))
for i, pair := range channelPairs {
// Append acks into recv packet info if present
pathEnd1DstMsgRecvPacket := pp.pathEnd2.messageCache.PacketFlow[pair.pathEnd2ChannelKey][chantypes.EventTypeRecvPacket]
for seq, ackInfo := range pp.pathEnd2.messageCache.PacketFlow[pair.pathEnd2ChannelKey][chantypes.EventTypeWriteAck] {
if recvPacketInfo, ok := pathEnd1DstMsgRecvPacket[seq]; ok {
recvPacketInfo.Ack = ackInfo.Ack
pathEnd1DstMsgRecvPacket[seq] = recvPacketInfo
}
}
pathEnd2DstMsgRecvPacket := pp.pathEnd1.messageCache.PacketFlow[pair.pathEnd1ChannelKey][chantypes.EventTypeRecvPacket]
for seq, ackInfo := range pp.pathEnd1.messageCache.PacketFlow[pair.pathEnd1ChannelKey][chantypes.EventTypeWriteAck] {
if recvPacketInfo, ok := pathEnd2DstMsgRecvPacket[seq]; ok {
recvPacketInfo.Ack = ackInfo.Ack
pathEnd2DstMsgRecvPacket[seq] = recvPacketInfo
}
}
pathEnd1PacketFlowMessages := pathEndPacketFlowMessages{
Src: pp.pathEnd1,
Dst: pp.pathEnd2,
ChannelKey: pair.pathEnd1ChannelKey,
SrcPreTransfer: pp.pathEnd1.messageCache.PacketFlow[pair.pathEnd1ChannelKey][preInitKey],
SrcMsgTransfer: pp.pathEnd1.messageCache.PacketFlow[pair.pathEnd1ChannelKey][chantypes.EventTypeSendPacket],
DstMsgRecvPacket: pathEnd1DstMsgRecvPacket,
SrcMsgAcknowledgement: pp.pathEnd1.messageCache.PacketFlow[pair.pathEnd1ChannelKey][chantypes.EventTypeAcknowledgePacket],
SrcMsgTimeout: pp.pathEnd1.messageCache.PacketFlow[pair.pathEnd1ChannelKey][chantypes.EventTypeTimeoutPacket],
}
pathEnd2PacketFlowMessages := pathEndPacketFlowMessages{
Src: pp.pathEnd2,