feat!: remove vscmatured packets (#2372)

* deprecate PacketMaturityTimeKey

* remove TestPacketMaturityTime

* update genesis logic

* remove maturity logic

* add migration

* fix UT

* fix integration tests

* update proto files

* remove genesis transformation

* Update testing documentation

* Revert "remove genesis transformation"

This reverts commit 89b1d05.

* add changelog entries

---------

Co-authored-by: github-actions <github-actions@github.com>

.changelog/unreleased/features/2101-introduce-priority-validators.md

@@ -0,0 +1,2 @@
+- `[x/provider]` Allow consumer chains to specify a list of priority validators that are included in the validator set before other validators are considered
+  ([\#2101](https://github.com/cosmos/interchain-security/pull/2101))

.changelog/unreleased/features/2372-vscmatured-packets.md

@@ -0,0 +1,2 @@
+- `[x/consumer]` Remove `VSCMaturedPackets`. Consumer-side changes for [ADR 018](https://cosmos.github.io/interchain-security/adrs/adr-018-remove-vscmatured#consumer-changes-r2).
+  ([\#2372](https://github.com/cosmos/interchain-security/pull/2372))

.changelog/unreleased/features/2378-allow-chain-id-updates.md

@@ -1,2 +1,2 @@
-- Allow the chain id of a consumer chain to be updated before the chain
+- `[x/provider]` Allow the chain id of a consumer chain to be updated before the chain
   launches. ([\#2378](https://github.com/cosmos/interchain-security/pull/2378))

.changelog/unreleased/state-breaking/2101-introduce-priority-validators.md

@@ -1,2 +1,2 @@
-- Allow consumer chains to specify a list of priority validators that are included in the validator set before other validators are considered
+- `[x/provider]` Allow consumer chains to specify a list of priority validators that are included in the validator set before other validators are considered
   ([\#2101](https://github.com/cosmos/interchain-security/pull/2101))

.changelog/unreleased/state-breaking/2372-vscmatured-packets.md

@@ -0,0 +1,2 @@
+- `[x/consumer]` Remove `VSCMaturedPackets`. Consumer-side changes for [ADR 018](https://cosmos.github.io/interchain-security/adrs/adr-018-remove-vscmatured#consumer-changes-r2).
+  ([\#2372](https://github.com/cosmos/interchain-security/pull/2372))

proto/interchain_security/ccv/consumer/v1/genesis.proto

@@ -20,6 +20,18 @@ import "tendermint/abci/types.proto";
 // Note: this type is only used on consumer side and references shared types with
 // provider
 message GenesisState {
+  // Reserve 5th slot for removed provider_client_state field
+  reserved 5;
+
+  // Reserve 6th slot for removed provider_consensus_state field
+  reserved 6;
+
+  // Reserve 7th slot for removed maturing_packets field
+  reserved 7;
+
+  // Reserve 8th slot for removed initial_val_set field
+  reserved 8;
+
   // ConsumerParams is a shared type with provider module
   interchain_security.ccv.v1.ConsumerParams params = 1
       [ (gogoproto.nullable) = false ];
@@ -29,15 +41,6 @@ message GenesisState {
   string provider_channel_id = 3;
   // true for new chain, false for chain restart.
   bool new_chain = 4;
-  // !!! DEPRECATED !!! ProviderClientState is deprecated. Use provider.client_state instead
-  ibc.lightclients.tendermint.v1.ClientState provider_client_state = 5 [ deprecated = true];
-  // !!! DEPRECATED !!! ProviderConsensusState is deprecated. Use provider.consensus_state instead
-  ibc.lightclients.tendermint.v1.ConsensusState provider_consensus_state = 6 [ deprecated = true];
-  // MaturingPackets nil on new chain, filled in on restart.
-  repeated MaturingVSCPacket maturing_packets = 7
-      [ (gogoproto.nullable) = false ];
-  // !!! DEPRECATED !!!! InitialValset is deprecated. Use provider.initial_val_set instead
-  repeated .tendermint.abci.ValidatorUpdate initial_val_set = 8 [ (gogoproto.nullable) = false, deprecated = true ];
   // HeightToValsetUpdateId nil on new chain, filled in on restart.
   repeated HeightToValsetUpdateID height_to_valset_update_id = 9
       [ (gogoproto.nullable) = false ];
@@ -73,15 +76,6 @@ message OutstandingDowntime { string validator_consensus_address = 1; }
 // to the consumer CCV module.
 message LastTransmissionBlockHeight { int64 height = 1; }
 
-// MaturingVSCPacket represents a vsc packet that is maturing internal to the
-// consumer CCV module, where the consumer has not yet relayed a VSCMatured
-// packet back to the provider.
-message MaturingVSCPacket {
-  uint64 vscId = 1;
-  google.protobuf.Timestamp maturity_time = 2
-      [ (gogoproto.stdtime) = true, (gogoproto.nullable) = false ];
-}
-
 // ConsumerPacketDataList is a list of consumer packet data packets.
 //
 // Note this type is used internally to the consumer CCV module

scripts/test_doc/test_documentation.md

@@ -48,7 +48,7 @@
 | Function | Short Description |
 |----------|-------------------|
  [TestVSCPacketSendExpiredClient](../../tests/integration/expired_client.go#L29) | TestVSCPacketSendExpiredClient tests queueing of VSCPackets when the consumer client is expired.<details><summary>Details</summary>* Set up a CCV channel and expire the client on consumer chain.<br>* Bond tokens to provider, send CCV packet to consumer and check pending packets.<br>* While the consumer client is expired (or inactive for some reason) all packets will be queued.<br>* The packet sending and checks are then repeated.<br>* More tokens are bonded on provider to change validator powers.<br>* Upgrade expired client to the consumer and all packets are cleared once the consumer client is established.</details> |
- [TestConsumerPacketSendExpiredClient](../../tests/integration/expired_client.go#L99) | TestConsumerPacketSendExpiredClient tests the consumer sending packets when the provider client is expired.<details><summary>Details</summary>* Set up a CCV channel and bond tokens on provider.<br>* Send CCV packet to consumer and rebond tokens on provider.<br>* Check for pending VSC packets and relay all VSC packets to consumer.<br>* The provider client is then expired.<br>* Confirm that while the provider client is expired all packets will be queued and then cleared<br>once the provider client is upgraded.</details> |
+ [TestConsumerPacketSendExpiredClient](../../tests/integration/expired_client.go#L95) | TestConsumerPacketSendExpiredClient tests the consumer sending packets when the provider client is expired.<details><summary>Details</summary>* Set up a CCV channel and bond tokens on provider.<br>* Send CCV packet to consumer and rebond tokens on provider.<br>* Check for pending VSC packets and relay all VSC packets to consumer.<br>* The provider client is then expired.<br>* Confirm that while the provider client is expired all packets will be queued and then cleared<br>once the provider client is upgraded.</details> |
 </details>
 
 # [key_assignment.go](../../tests/integration/key_assignment.go) 
@@ -135,7 +135,6 @@
 
 | Function | Short Description |
 |----------|-------------------|
- [TestPacketRoundtrip](../../tests/integration/valset_update.go#L23) | TestPacketRoundtrip tests a CCV packet roundtrip when tokens are bonded on the provider.<details><summary>Details</summary>* Set up CCV and transfer channels.<br>* Bond some tokens on the provider side in order to change validator power.<br>* Relay a packet from the provider chain to the consumer chain.<br>* Relays a matured packet from the consumer chain back to the provider chain.</details> |
- [TestQueueAndSendVSCMaturedPackets](../../tests/integration/valset_update.go#L59) | TestQueueAndSendVSCMaturedPackets tests the behavior of EndBlock QueueVSCMaturedPackets call and its integration with SendPackets call.<details><summary>Details</summary>* Set up CCV channel.<br>* Create and simulate the sending of three VSC packets from the provider chain to the consumer chain at different times.<br>* Send the first packet and validate its processing.<br>* Simulate the passage of one hour.<br>* Send the second packet and validate its processing.<br>* Simulate the passage of 24 more hours.<br>* Send the third packet and validate its processing.<br>* Retrieve all packet maturity times from the consumer, and use this to check the maturity status of the packets sent earlier.<br>* Advance the time so that the first two packets reach their unbonding period, while the third packet does not.<br>* Ensure first two packets are unbonded, their maturity times are deleted, and that VSCMatured packets are queued.<br>* The third packet is still in the store and has not yet been processed for unbonding.<br>* Checks that the packet commitments for the processed packets are correctly reflected in the consumer chain's state.</details> |
+ [TestPacketRoundtrip](../../tests/integration/valset_update.go#L15) | TestPacketRoundtrip tests a CCV packet roundtrip when tokens are bonded on the provider.<details><summary>Details</summary>* Set up CCV and transfer channels.<br>* Bond some tokens on the provider side in order to change validator power.<br>* Relay a packet from the provider chain to the consumer chain.<br>* Relays a matured packet from the consumer chain back to the provider chain.</details> |
 </details>
 

tests/integration/expired_client.go

@@ -82,10 +82,6 @@ func (s *CCVTestSuite) TestVSCPacketSendExpiredClient() {
 	s.nextEpoch()
 	// - relay all VSC packet from provider to consumer
 	relayAllCommittedPackets(s, s.providerChain, s.path, ccv.ProviderPortID, s.path.EndpointB.ChannelID, 3)
-	// - increment time so that the unbonding period ends on the consumer
-	incrementTimeByUnbondingPeriod(s, Consumer)
-	// - relay all VSCMatured packet from consumer to provider
-	relayAllCommittedPackets(s, s.consumerChain, s.path, ccv.ConsumerPortID, s.path.EndpointA.ChannelID, 3)
 }
 
 // TestConsumerPacketSendExpiredClient tests the consumer sending packets when the provider client is expired.
@@ -134,10 +130,9 @@ func (s *CCVTestSuite) TestConsumerPacketSendExpiredClient() {
 	consumerUnbondingPeriod := s.consumerApp.GetConsumerKeeper().GetUnbondingPeriod(s.consumerCtx())
 	incrementTimeWithoutUpdate(s, consumerUnbondingPeriod+time.Hour, Provider)
 
-	// check that the packets were added to the list of pending data packets
+	// check that no packets were added to the list of pending data packets
 	consumerPackets := consumerKeeper.GetPendingPackets(s.consumerCtx())
-	s.Require().NotEmpty(consumerPackets)
-	s.Require().Len(consumerPackets, 2, "unexpected number of pending data packets")
+	s.Require().Empty(consumerPackets)
 
 	// try to send slash packet for downtime infraction
 	addr := ed25519.GenPrivKey().PubKey().Address()
@@ -151,21 +146,21 @@ func (s *CCVTestSuite) TestConsumerPacketSendExpiredClient() {
 	// check that the packets were added to the list of pending data packets
 	consumerPackets = consumerKeeper.GetPendingPackets(s.consumerCtx())
 	s.Require().NotEmpty(consumerPackets)
-	// At this point we expect 4 packets, two vsc matured packets and two trailing slash packets
-	s.Require().Len(consumerPackets, 4, "unexpected number of pending data packets")
+	// At this point we expect two trailing slash packets
+	s.Require().Len(consumerPackets, 2, "unexpected number of pending data packets")
 
 	// upgrade expired client to the consumer
 	upgradeExpiredClient(s, Provider)
 
 	// go to next block to trigger SendPendingPackets
 	s.consumerChain.NextBlock()
 
-	// Check that the leading vsc matured packets were sent and no longer pending
+	// Check that both slash packets are still pending
 	consumerPackets = consumerKeeper.GetPendingPackets(s.consumerCtx())
 	s.Require().Len(consumerPackets, 2, "unexpected number of pending data packets")
 
 	// relay committed packets from consumer to provider, first slash packet should be committed
-	relayAllCommittedPackets(s, s.consumerChain, s.path, ccv.ConsumerPortID, s.path.EndpointA.ChannelID, 3) // two vsc matured + one slash
+	relayAllCommittedPackets(s, s.consumerChain, s.path, ccv.ConsumerPortID, s.path.EndpointA.ChannelID, 1) // one slash
 
 	// First slash has been acked, now only the second slash packet should remain as pending
 	consumerPackets = consumerKeeper.GetPendingPackets(s.consumerCtx())
@@ -187,10 +182,6 @@ func (s *CCVTestSuite) TestConsumerPacketSendExpiredClient() {
 	s.nextEpoch()
 	// - relay 1 VSC packet from provider to consumer
 	relayAllCommittedPackets(s, s.providerChain, s.path, ccv.ProviderPortID, s.path.EndpointB.ChannelID, 1)
-	// - increment time so that the unbonding period ends on the provider
-	incrementTimeByUnbondingPeriod(s, Consumer)
-	// - relay 1 VSCMatured packet from consumer to provider
-	relayAllCommittedPackets(s, s.consumerChain, s.path, ccv.ConsumerPortID, s.path.EndpointA.ChannelID, 1)
 }
 
 // expireClient expires the client to the `clientTo` chain

tests/integration/valset_update.go

@@ -1,16 +1,8 @@
 package integration
 
 import (
-	"time"
-
-	clienttypes "github.com/cosmos/ibc-go/v8/modules/core/02-client/types"
-
 	"cosmossdk.io/math"
 
-	cryptocodec "github.com/cosmos/cosmos-sdk/crypto/codec"
-
-	abci "github.com/cometbft/cometbft/abci/types"
-
 	ccv "github.com/cosmos/interchain-security/v6/x/ccv/types"
 )
 
@@ -34,128 +26,4 @@ func (s *CCVTestSuite) TestPacketRoundtrip() {
 
 	// Relay 1 VSC packet from provider to consumer
 	relayAllCommittedPackets(s, s.providerChain, s.path, ccv.ProviderPortID, s.path.EndpointB.ChannelID, 1)
-
-	// Increment time so that the unbonding period ends on the provider
-	incrementTimeByUnbondingPeriod(s, Provider)
-
-	// Relay 1 VSCMatured packet from consumer to provider
-	relayAllCommittedPackets(s, s.consumerChain, s.path, ccv.ConsumerPortID, s.path.EndpointA.ChannelID, 1)
-}
-
-// TestQueueAndSendVSCMaturedPackets tests the behavior of EndBlock QueueVSCMaturedPackets call and its integration with SendPackets call.
-// @Long Description@
-// * Set up CCV channel.
-// * Create and simulate the sending of three VSC packets from the provider chain to the consumer chain at different times.
-// * Send the first packet and validate its processing.
-// * Simulate the passage of one hour.
-// * Send the second packet and validate its processing.
-// * Simulate the passage of 24 more hours.
-// * Send the third packet and validate its processing.
-// * Retrieve all packet maturity times from the consumer, and use this to check the maturity status of the packets sent earlier.
-// * Advance the time so that the first two packets reach their unbonding period, while the third packet does not.
-// * Ensure first two packets are unbonded, their maturity times are deleted, and that VSCMatured packets are queued.
-// * The third packet is still in the store and has not yet been processed for unbonding.
-// * Checks that the packet commitments for the processed packets are correctly reflected in the consumer chain's state.
-func (suite *CCVTestSuite) TestQueueAndSendVSCMaturedPackets() {
-	consumerKeeper := suite.consumerApp.GetConsumerKeeper()
-
-	// setup CCV channel
-	suite.SetupCCVChannel(suite.path)
-
-	// send 3 packets to consumer chain at different times
-	pk, err := cryptocodec.FromCmtPubKeyInterface(suite.providerChain.Vals.Validators[0].PubKey)
-	suite.Require().NoError(err)
-	pk1, err := cryptocodec.ToCmtProtoPublicKey(pk)
-	suite.Require().NoError(err)
-	pk, err = cryptocodec.FromCmtPubKeyInterface(suite.providerChain.Vals.Validators[1].PubKey)
-	suite.Require().NoError(err)
-	pk2, err := cryptocodec.ToCmtProtoPublicKey(pk)
-	suite.Require().NoError(err)
-
-	pd := ccv.NewValidatorSetChangePacketData(
-		[]abci.ValidatorUpdate{
-			{
-				PubKey: pk1,
-				Power:  30,
-			},
-			{
-				PubKey: pk2,
-				Power:  20,
-			},
-		},
-		1,
-		nil,
-	)
-
-	// send first packet
-	packet := suite.newPacketFromProvider(pd.GetBytes(), 1, suite.path, clienttypes.NewHeight(1, 0), 0)
-	err = consumerKeeper.OnRecvVSCPacket(suite.consumerChain.GetContext(), packet, pd)
-	suite.Require().Nil(err, "OnRecvVSCPacket did return non-nil error")
-
-	// increase time
-	incrementTime(suite, time.Hour)
-
-	// update time and send second packet
-	pd.ValidatorUpdates[0].Power = 15
-	pd.ValsetUpdateId = 2
-	packet.Data = pd.GetBytes()
-	packet.Sequence = 2
-	err = consumerKeeper.OnRecvVSCPacket(suite.consumerChain.GetContext(), packet, pd)
-	suite.Require().Nil(err, "OnRecvVSCPacket did return non-nil error")
-
-	// increase time
-	incrementTime(suite, 24*time.Hour)
-
-	// update time and send third packet
-	pd.ValidatorUpdates[1].Power = 40
-	pd.ValsetUpdateId = 3
-	packet.Data = pd.GetBytes()
-	packet.Sequence = 3
-	err = consumerKeeper.OnRecvVSCPacket(suite.consumerChain.GetContext(), packet, pd)
-	suite.Require().Nil(err, "OnRecvVSCPacket did return non-nil error")
-
-	packetMaturities := consumerKeeper.GetAllPacketMaturityTimes(suite.consumerChain.GetContext())
-
-	// increase time such that first two packets are unbonded but third is not.
-	unbondingPeriod := consumerKeeper.GetUnbondingPeriod(suite.consumerChain.GetContext())
-	// increase time
-	incrementTime(suite, unbondingPeriod-time.Hour)
-
-	// ensure first two packets are unbonded and VSCMatured packets are queued
-	// unbonded time is deleted
-	suite.Require().False(
-		consumerKeeper.PacketMaturityTimeExists(
-			suite.consumerChain.GetContext(),
-			packetMaturities[0].VscId,
-			packetMaturities[0].MaturityTime,
-		),
-		"maturity time not deleted for mature packet 1",
-	)
-	suite.Require().False(
-		consumerKeeper.PacketMaturityTimeExists(
-			suite.consumerChain.GetContext(),
-			packetMaturities[1].VscId,
-			packetMaturities[1].MaturityTime,
-		),
-		"maturity time not deleted for mature packet 2",
-	)
-	// ensure that third packet did not get unbonded and is still in store
-	suite.Require().True(
-		consumerKeeper.PacketMaturityTimeExists(
-			suite.consumerChain.GetContext(),
-			packetMaturities[2].VscId,
-			packetMaturities[2].MaturityTime,
-		),
-		"maturity time for packet 3 is not after current time",
-	)
-
-	// check that the packets are committed in state
-	commitments := suite.consumerApp.GetIBCKeeper().ChannelKeeper.GetAllPacketCommitmentsAtChannel(
-		suite.consumerChain.GetContext(),
-		ccv.ConsumerPortID,
-		suite.path.EndpointA.ChannelID,
-	)
-	suite.Require().Equal(2, len(commitments), "did not find packet commitments")
-	suite.Require().Equal(uint64(1), commitments[0].Sequence, "did not send VSCMatured packet for VSC packet 1")
-	suite.Require().Equal(uint64(2), commitments[1].Sequence, "did not send VSCMatured packet for VSC packet 2")
 }

x/ccv/consumer/keeper/genesis.go

@@ -73,10 +73,6 @@ func (k Keeper) InitGenesis(ctx sdk.Context, state *types.GenesisState) []abci.V
 		if state.ProviderChannelId != "" {
 			// set provider channel ID
 			k.SetProviderChannel(ctx, state.ProviderChannelId)
-			// set all unbonding sequences
-			for _, mp := range state.MaturingPackets {
-				k.SetPacketMaturityTime(ctx, mp.VscId, mp.MaturityTime)
-			}
 			// set outstanding downtime slashing requests
 			for _, od := range state.OutstandingDowntimeSlashing {
 				consAddr, err := sdk.ConsAddressFromBech32(od.ValidatorConsensusAddress)
@@ -141,7 +137,6 @@ func (k Keeper) ExportGenesis(ctx sdk.Context) (genesis *types.GenesisState) {
 		genesis = types.NewRestartGenesisState(
 			clientID,
 			channelID,
-			k.GetAllPacketMaturityTimes(ctx),
 			valset,
 			k.GetAllHeightToValsetUpdateIDs(ctx),
 			pendingPacketsDepreciated,
@@ -161,7 +156,6 @@ func (k Keeper) ExportGenesis(ctx sdk.Context) (genesis *types.GenesisState) {
 		genesis = types.NewRestartGenesisState(
 			clientID,
 			"",
-			nil,
 			valset,
 			k.GetAllHeightToValsetUpdateIDs(ctx),
 			pendingPacketsDepreciated,