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fix: Allow VerifyVoteExtensions without ExtendVote (backport #17251) (#17254)

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Co-authored-by: Facundo Medica <14063057+facundomedica@users.noreply.github.com>
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mergify[bot]
2023-08-01 19:45:43 +00:00
committed by GitHub
co-authored by Facundo Medica
parent 9e2abf8ef4
commit 86ca92a5cf
6 changed files with 75 additions and 21 deletions
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docs/architecture/adr-064-abci-2.0.md
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@@ -105,10 +105,11 @@ type ExtendVoteHandler func(sdk.Context, abci.RequestExtendVote) abci.ResponseEx
type VerifyVoteExtensionHandler func(sdk.Context, abci.RequestVerifyVoteExtension) abci.ResponseVerifyVoteExtension
```
A new execution state, `voteExtensionState`, will be introduced and provided as
the `Context` that is supplied to both handlers. It will contain relevant metadata
such as the block height and block hash. Note, `voteExtensionState` is never
committed and will exist as ephemeral state only in the context of a single block.
An ephemeral context and state will be supplied to both handlers. The
context will contain relevant metadata such as the block height and block hash.
The state will be a cached version of the committed state of the application and
will be discarded after the execution of the handler, this means that both handlers
get a fresh state view and no changes made to it will be written.
If an application decides to implement `ExtendVoteHandler`, it must return a
non-nil `ResponseExtendVote.VoteExtension`.