fix: ica handshake reopening channel - use `GetAppVersion` in favour of `channel.Version` #2302

damiannolan · 2022-09-19T10:14:47Z

Description

Adding unwrapping of channel version to ica controller handshake reopening flow

closes: #XXXX

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Code follows the module structure standards.
Wrote unit and integration tests
Updated relevant documentation (docs/) or specification (x/<module>/spec/)
Added relevant godoc comments.
Added a relevant changelog entry to the Unreleased section in CHANGELOG.md
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…ening flow

crodriguezvega

Can we add a changelog entry, @damiannolan? :)

damiannolan · 2022-09-19T10:17:38Z

Can we add a changelog entry, @damiannolan? :)

Done! ✅

chatton · 2022-09-19T10:51:46Z

modules/apps/27-interchain-accounts/controller/keeper/handshake.go

-		if !icatypes.IsPreviousMetadataEqual(channel.Version, metadata) {
+		appVersion, found := k.GetAppVersion(ctx, portID, activeChannelID)
+		if !found {
+			panic(fmt.Sprintf("active channel mapping set for %s, but channel does not exist in channel store", activeChannelID))


looks like this panic introduces multiple conventions in the function (error return + panic) does it make more sense to return an error instead?

Do we need to panic?

As mentioned earlier in person I just followed essentially the same used above here - as in some places in ibc-go code we just panic because it's unreachable code.

maybe we could add a comment indicating as such? The message we panic with seems like it would be a regular error that we could run into.

colin-axner

Is it possible to add a test case for the exact issue we had?

AdityaSripal

Nice work!

damiannolan · 2022-09-19T18:31:27Z

I've been modifying the existing the test TestControlAccountAfterChannelClose to use an ICS29/ICS27 channel version.

It looks like we need to handle the same unwrapping of the channel version on the host in the OnChanOpenTry callback: https://github.com/cosmos/ibc-go/blob/main/modules/apps/27-interchain-accounts/host/keeper/handshake.go#L62.

This requires us to compose the hostKeeper with an ics4Wrapper and pass the feeKeeper similarly to how we do with the controller: https://github.com/cosmos/ibc-go/blob/main/testing/simapp/app.go#L401
This has to be done to unwrap the ICS27 app version from the fee enabled version correctly.

I'll make the changes locally and see if it resolves the failing test before pushing an update.

Edit: This seemed to do the trick. I've pushed an update with the changes to the host submodule and simapp, as well as updated/moved the changelog entry to API breaking. I guess we can't backport this fix. cc. @crodriguezvega @colin-axner

…el version in OnChanOpenTry handshake cb

codecov-commenter · 2022-09-19T19:01:27Z

Codecov Report

Merging #2302 (3559f5b) into main (b97729d) will increase coverage by 0.03%.
The diff coverage is 77.77%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2302      +/-   ##
==========================================
+ Coverage   79.54%   79.58%   +0.03%     
==========================================
  Files         175      175              
  Lines       12069    12131      +62     
==========================================
+ Hits         9600     9654      +54     
- Misses       2045     2049       +4     
- Partials      424      428       +4

Impacted Files	Coverage Δ
...7-interchain-accounts/controller/ibc_middleware.go	`70.96% <42.85%> (-9.56%)`	⬇️
...interchain-accounts/controller/keeper/handshake.go	`89.85% <50.00%> (+1.97%)`	⬆️
...27-interchain-accounts/controller/keeper/keeper.go	`92.53% <75.00%> (-0.21%)`	⬇️
...nterchain-accounts/controller/keeper/migrations.go	`81.25% <75.00%> (+1.25%)`	⬆️
...ps/27-interchain-accounts/host/keeper/handshake.go	`89.55% <90.47%> (+4.93%)`	⬆️
...7-interchain-accounts/controller/keeper/account.go	`85.00% <100.00%> (ø)`
...7-interchain-accounts/controller/keeper/genesis.go	`91.30% <100.00%> (ø)`
...apps/27-interchain-accounts/host/keeper/account.go	`100.00% <100.00%> (+23.07%)`	⬆️
.../apps/27-interchain-accounts/host/keeper/keeper.go	`83.80% <100.00%> (+0.47%)`	⬆️
modules/apps/27-interchain-accounts/module.go	`54.00% <100.00%> (+1.42%)`	⬆️
... and 8 more

jackzampolin · 2022-09-19T20:44:09Z

Thank you for this fix ibc-go team!

crodriguezvega · 2022-09-20T08:52:40Z

@damiannolan Could you please document this API change in the PR for the migration docs of v5?

chatton

LGTM just left a very minor nit!

charleenfei

nice!

charleenfei · 2022-09-21T09:07:02Z

modules/apps/27-interchain-accounts/controller/keeper/handshake.go

-		if !icatypes.IsPreviousMetadataEqual(channel.Version, metadata) {
+		appVersion, found := k.GetAppVersion(ctx, portID, activeChannelID)
+		if !found {
+			panic(fmt.Sprintf("active channel mapping set for %s, but channel does not exist in channel store", activeChannelID))


a nit: channel does not exist in channel store is kind of confusing if the error is GetAppVersion returning not found -- maybe something like channel version does not exist?

…of `channel.Version` (#2302) * adding unwrapping of channel version to ica controller handshake reopening flow * adding changelog * adding ics4Wrapper to ics27 host submodule, handling unwrapping channel version in OnChanOpenTry handshake cb * updating changelog Co-authored-by: colin axnér <25233464+colin-axner@users.noreply.github.com> Co-authored-by: Carlos Rodriguez <carlos@interchain.io> (cherry picked from commit 9e6246f) # Conflicts: # CHANGELOG.md # modules/apps/27-interchain-accounts/host/keeper/keeper.go

…of `channel.Version` (backport #2302) (#2357) * fix: ica handshake reopening channel - use `GetAppVersion` in favour of `channel.Version` (#2302) * adding unwrapping of channel version to ica controller handshake reopening flow * adding changelog * adding ics4Wrapper to ics27 host submodule, handling unwrapping channel version in OnChanOpenTry handshake cb * updating changelog Co-authored-by: colin axnér <25233464+colin-axner@users.noreply.github.com> Co-authored-by: Carlos Rodriguez <carlos@interchain.io> (cherry picked from commit 9e6246f) # Conflicts: # CHANGELOG.md # modules/apps/27-interchain-accounts/host/keeper/keeper.go * fixing imports and interface type Co-authored-by: Damian Nolan <damiannolan@gmail.com>

…of `channel.Version` (backport #2302) (#2358) * fix: ica handshake reopening channel - use `GetAppVersion` in favour of `channel.Version` (#2302) * adding unwrapping of channel version to ica controller handshake reopening flow * adding changelog * adding ics4Wrapper to ics27 host submodule, handling unwrapping channel version in OnChanOpenTry handshake cb * updating changelog Co-authored-by: colin axnér <25233464+colin-axner@users.noreply.github.com> Co-authored-by: Carlos Rodriguez <carlos@interchain.io> (cherry picked from commit 9e6246f) # Conflicts: # CHANGELOG.md # modules/apps/27-interchain-accounts/host/keeper/keeper.go * fixing merge conflict error - reinstate interface type for msg router Co-authored-by: Damian Nolan <damiannolan@gmail.com>

adding unwrapping of channel version to ica controller handshake reop…

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…ening flow

damiannolan requested review from seantking, colin-axner and AdityaSripal as code owners September 19, 2022 10:14

damiannolan requested review from charleenfei, chatton and crodriguezvega September 19, 2022 10:15

crodriguezvega added backport-to-v5.0.x labels Sep 19, 2022

crodriguezvega reviewed Sep 19, 2022

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adding changelog

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damiannolan added 2 commits September 19, 2022 20:45

adding ics4Wrapper to ics27 host submodule, handling unwrapping chann…

6d6bdaf

…el version in OnChanOpenTry handshake cb

updating changelog

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crodriguezvega removed backport-to-v3.3.x labels Sep 20, 2022

colin-axner approved these changes Sep 20, 2022

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damiannolan and others added 2 commits September 20, 2022 15:34

Merge branch 'main' into damian/fix-reopening-channel-handshake

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Merge branch 'main' into damian/fix-reopening-channel-handshake

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colin-axner requested review from AdityaSripal and chatton September 20, 2022 16:55

Merge branch 'main' into damian/fix-reopening-channel-handshake

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chatton approved these changes Sep 21, 2022

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charleenfei approved these changes Sep 21, 2022

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damiannolan mentioned this pull request Sep 21, 2022

docs: include ics4Wrapper in hostkeeper.NewKeeper ics27 integration docs #2351

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AdityaSripal approved these changes Sep 21, 2022

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Carlos Rodriguez and others added 2 commits September 21, 2022 12:43

Merge branch 'main' into damian/fix-reopening-channel-handshake

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Merge branch 'main' into damian/fix-reopening-channel-handshake

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damiannolan enabled auto-merge (squash) September 21, 2022 12:54

damiannolan merged commit 9e6246f into main Sep 21, 2022

damiannolan deleted the damian/fix-reopening-channel-handshake branch September 21, 2022 12:59

mergify bot mentioned this pull request Sep 21, 2022

fix: ica handshake reopening channel - use GetAppVersion in favour of channel.Version (backport #2302) #2357

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mergify bot mentioned this pull request Sep 21, 2022

fix: ica handshake reopening channel - use GetAppVersion in favour of channel.Version (backport #2302) #2358

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chatton mentioned this pull request Nov 7, 2022

Add git cliff toml to support generation of changelog #2697

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fix: ica handshake reopening channel - use `GetAppVersion` in favour of `channel.Version` #2302

fix: ica handshake reopening channel - use `GetAppVersion` in favour of `channel.Version` #2302

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fix: ica handshake reopening channel - use GetAppVersion in favour of channel.Version #2302

fix: ica handshake reopening channel - use GetAppVersion in favour of channel.Version #2302

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fix: ica handshake reopening channel - use `GetAppVersion` in favour of `channel.Version` #2302

fix: ica handshake reopening channel - use `GetAppVersion` in favour of `channel.Version` #2302

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