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feat: remove consumer panic when ccv channel is closed (backport #1127) #1137

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merged 1 commit into from
Jul 12, 2023
Merged

feat: remove consumer panic when ccv channel is closed (backport #1127) #1137

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8 changes: 8 additions & 0 deletions CHANGELOG.md
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,14 @@ Add an entry to the unreleased section whenever merging a PR to main that is not
* (fix) [#720](https://github.com/cosmos/interchain-security/issues/720) Fix the attribute `AttributeDistributionTotal` value in `FeeDistribution` event emit.
* (deps) [#1119](https://github.com/cosmos/interchain-security/pull/1119) bump cometbft from `v0.37.1` to `0.37.2`.

## v3.1.0

Date July 11th, 2023
MSalopek marked this conversation as resolved.
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A minor upgrade to v3.0.0, which removes the panic in the consumer ccv module which would occur in an emergency scenario where the ccv channel is closed.

* (feat) [#1127](https://github.com/cosmos/interchain-security/pull/1127) Remove consumer panic when ccv channel is closed

## v3.0.0

Date: June 21st, 2023
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28 changes: 0 additions & 28 deletions tests/integration/stop_consumer.go
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Original file line number Diff line number Diff line change
@@ -1,7 +1,6 @@
package integration

import (
abci "github.com/cometbft/cometbft/abci/types"
sdk "github.com/cosmos/cosmos-sdk/types"
stakingtypes "github.com/cosmos/cosmos-sdk/x/staking/types"
channeltypes "github.com/cosmos/ibc-go/v7/modules/core/04-channel/types"
Expand Down Expand Up @@ -211,30 +210,3 @@ func (s *CCVTestSuite) checkConsumerChainIsRemoved(chainID string, checkChannel
s.Require().Empty(slashData)
s.Require().Empty(vscMaturedData)
}

// TestProviderChannelClosed checks that a consumer chain panics
// when the provider channel was established and then closed
func (suite *CCVTestSuite) TestProviderChannelClosed() {
suite.SetupCCVChannel(suite.path)
// establish provider channel with a first VSC packet
suite.SendEmptyVSCPacket()

consumerKeeper := suite.consumerApp.GetConsumerKeeper()

channelID, found := consumerKeeper.GetProviderChannel(suite.consumerChain.GetContext())
suite.Require().True(found)

// close provider channel
err := consumerKeeper.ChanCloseInit(suite.consumerChain.GetContext(), ccv.ConsumerPortID, channelID)
suite.Require().NoError(err)
suite.Require().True(consumerKeeper.IsChannelClosed(suite.consumerChain.GetContext(), channelID))

// assert begin blocker did panics
defer func() {
if r := recover(); r != nil {
return
}
suite.Require().Fail("Begin blocker did not panic with a closed channel")
}()
suite.consumerApp.BeginBlocker(suite.consumerChain.GetContext(), abci.RequestBeginBlock{})
}
4 changes: 0 additions & 4 deletions testutil/integration/debug_test.go
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Expand Up @@ -157,10 +157,6 @@ func TestStopConsumerOnChannelClosed(t *testing.T) {
runCCVTestByName(t, "TestStopConsumerOnChannelClosed")
}

func TestProviderChannelClosed(t *testing.T) {
runCCVTestByName(t, "TestProviderChannelClosed")
}

//
// Throttle tests
//
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5 changes: 1 addition & 4 deletions x/ccv/consumer/module.go
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Expand Up @@ -144,12 +144,9 @@ func (am AppModule) BeginBlock(ctx sdk.Context, req abci.RequestBeginBlock) {
channelID, found := am.keeper.GetProviderChannel(ctx)
if found && am.keeper.IsChannelClosed(ctx, channelID) {
// The CCV channel was established, but it was then closed;
// the consumer chain is no longer safe, thus it MUST shut down.
// This is achieved by panicking, similar as it's done in the
// x/upgrade module of cosmos-sdk.
// the consumer chain is not secured anymore, but we allow it to run as a POA chain and log an error.
channelClosedMsg := fmt.Sprintf("CCV channel %q was closed - shutdown consumer chain since it is not secured anymore", channelID)
am.keeper.Logger(ctx).Error(channelClosedMsg)
panic(channelClosedMsg)
}

// map next block height to the vscID of the current block height
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