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Allow evm to call native modules through logs #417

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merged 14 commits into from
Sep 2, 2021

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yihuang
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@yihuang yihuang commented Aug 9, 2021

Closes #416

Description

  • Add EvmHooks, currently only single api PostTxProcessing.
  • implements a BankSendHook which can send native coins, but not enabled in app by default.
    function test() public {
        emit __CosmosNativeBankSend(msg.sender, 10, "aphoton");
    }

For contributor use:

  • Targeted PR against correct branch (see CONTRIBUTING.md)
  • Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
  • 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
  • Re-reviewed Files changed in the Github PR explorer

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  • Added appropriate labels to PR (ex. WIP, R4R, docs, etc)
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  • Squashed all commits, uses message "Merge pull request #XYZ: [title]" (coding standards)

@yihuang yihuang marked this pull request as draft August 9, 2021 10:09
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codecov bot commented Aug 9, 2021

Codecov Report

Merging #417 (0fc6b8f) into main (b76d024) will increase coverage by 0.12%.
The diff coverage is 72.41%.

Impacted file tree graph

@@            Coverage Diff             @@
##             main     #417      +/-   ##
==========================================
+ Coverage   50.41%   50.53%   +0.12%     
==========================================
  Files          57       58       +1     
  Lines        5465     5495      +30     
==========================================
+ Hits         2755     2777      +22     
- Misses       2594     2600       +6     
- Partials      116      118       +2     
Impacted Files Coverage Δ
x/evm/types/errors.go 100.00% <ø> (ø)
x/evm/keeper/state_transition.go 73.12% <45.45%> (-1.16%) ⬇️
x/evm/keeper/keeper.go 66.96% <80.00%> (+0.60%) ⬆️
x/evm/keeper/hooks.go 100.00% <100.00%> (ø)

@fedekunze
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@yihuang let's create an ADR for this that leverages Hooks. See the governance hooks for reference

@yihuang yihuang marked this pull request as ready for review August 11, 2021 04:20
@yihuang yihuang mentioned this pull request Aug 11, 2021
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orijbot commented Aug 30, 2021

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Closes #416

comment

add txHash parameter

review suggestions

add hooks test
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@fedekunze fedekunze left a comment

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Final pass. Great work! Can you also add a new Features entry on the Changelog? 🙏

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// EvmHooks event hooks for evm tx processing
type EvmHooks interface {
// Must be called after tx is processed, if failed, the whole evm transaction is reverted.
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Add the warning that we discussed in the Negative consequences section of the ADR

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Actually, that negative consequence is about the use case of utilizing the hook to process logs, not about the hook interface in general.

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@yihuang yihuang Sep 2, 2021

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I added the use case context to consequences in the ADR.

yihuang and others added 8 commits September 2, 2021 15:47
Co-authored-by: Federico Kunze Küllmer <[email protected]>
Co-authored-by: Federico Kunze Küllmer <[email protected]>
Co-authored-by: Federico Kunze Küllmer <[email protected]>
Co-authored-by: Federico Kunze Küllmer <[email protected]>
Co-authored-by: Federico Kunze Küllmer <[email protected]>
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yihuang commented Sep 2, 2021

Final pass. Great work! Can you also add a new Features entry on the Changelog? 🙏

changelog added.

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ACK 💯

CHANGELOG.md Outdated Show resolved Hide resolved
@fedekunze fedekunze enabled auto-merge (squash) September 2, 2021 12:21
@fedekunze fedekunze added the automerge Automatically merge PR once all prerequisites pass. label Sep 2, 2021
@fedekunze fedekunze merged commit 089afe4 into evmos:main Sep 2, 2021
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Allow evm to call native modules through logs
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