laconicd/x/evm/spec/README.md

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docs: vuepress setup and section titles (#311) * vuepress * docs: vuepress setup and TODOs * doc scripts * update Makefile and gitignore * more docs updates * gitignore * metamask instructions * update image * updates * updates from call * docs: vuepress config and home.vue (#350) * update uncles return (#337) * x/evm: fix EndBlock consensus failure (#334) * add test for sending tx w/ 21000 gas * improve rpc transfer test * use ctx in EndBlock * UpdateAccounts and ClearStateObjects with passed in context * log ethereum address on error Co-authored-by: Federico Kunze <31522760+fedekunze@users.noreply.github.com> Co-authored-by: Federico Kunze <federico.kunze94@gmail.com> * update Ethermint color variables * add header and footer logo * tweak config.js * WIP custom homepage.vue * add layout to docs/README * update color variables * add eth logo black and white * tweak docs/README * update logo and logo-bw svg * bump 1.0.167 * homepage → home * add icon-code, icon-rocket * layout: home, remove configurable frontmatter: label, read, use * clean up config.js * bump 1.0.168 * fix missing comma from resolving conflicts * update sidebar, config nav, path * remove left whitespace on the header and footer logos * clean up home.vue, docs/README * update ethermint forum url in footer.links * comment out custom true to enable searchbar in subpages * remove external link icon for Guides * comments, revert custom true * clean up config.js, add specifications icon Co-authored-by: noot <36753753+noot@users.noreply.github.com> Co-authored-by: Federico Kunze <31522760+fedekunze@users.noreply.github.com> Co-authored-by: Federico Kunze <federico.kunze94@gmail.com> * final touches Co-authored-by: Cyrus Goh <hello@lovincyrus.com> Co-authored-by: noot <36753753+noot@users.noreply.github.com>
2020-07-02 08:22:45 +00:00
<!--
order: 0
title: EVM Overview
parent:
title: "evm"
-->
# `evm`
## Abstract
This document defines the specification of the Ethereum Virtual Machine (EVM) as a Cosmos SDK module.
docs: vuepress setup and section titles (#311) * vuepress * docs: vuepress setup and TODOs * doc scripts * update Makefile and gitignore * more docs updates * gitignore * metamask instructions * update image * updates * updates from call * docs: vuepress config and home.vue (#350) * update uncles return (#337) * x/evm: fix EndBlock consensus failure (#334) * add test for sending tx w/ 21000 gas * improve rpc transfer test * use ctx in EndBlock * UpdateAccounts and ClearStateObjects with passed in context * log ethereum address on error Co-authored-by: Federico Kunze <31522760+fedekunze@users.noreply.github.com> Co-authored-by: Federico Kunze <federico.kunze94@gmail.com> * update Ethermint color variables * add header and footer logo * tweak config.js * WIP custom homepage.vue * add layout to docs/README * update color variables * add eth logo black and white * tweak docs/README * update logo and logo-bw svg * bump 1.0.167 * homepage → home * add icon-code, icon-rocket * layout: home, remove configurable frontmatter: label, read, use * clean up config.js * bump 1.0.168 * fix missing comma from resolving conflicts * update sidebar, config nav, path * remove left whitespace on the header and footer logos * clean up home.vue, docs/README * update ethermint forum url in footer.links * comment out custom true to enable searchbar in subpages * remove external link icon for Guides * comments, revert custom true * clean up config.js, add specifications icon Co-authored-by: noot <36753753+noot@users.noreply.github.com> Co-authored-by: Federico Kunze <31522760+fedekunze@users.noreply.github.com> Co-authored-by: Federico Kunze <federico.kunze94@gmail.com> * final touches Co-authored-by: Cyrus Goh <hello@lovincyrus.com> Co-authored-by: noot <36753753+noot@users.noreply.github.com>
2020-07-02 08:22:45 +00:00
## Contents
docs: vuepress setup and section titles (#311) * vuepress * docs: vuepress setup and TODOs * doc scripts * update Makefile and gitignore * more docs updates * gitignore * metamask instructions * update image * updates * updates from call * docs: vuepress config and home.vue (#350) * update uncles return (#337) * x/evm: fix EndBlock consensus failure (#334) * add test for sending tx w/ 21000 gas * improve rpc transfer test * use ctx in EndBlock * UpdateAccounts and ClearStateObjects with passed in context * log ethereum address on error Co-authored-by: Federico Kunze <31522760+fedekunze@users.noreply.github.com> Co-authored-by: Federico Kunze <federico.kunze94@gmail.com> * update Ethermint color variables * add header and footer logo * tweak config.js * WIP custom homepage.vue * add layout to docs/README * update color variables * add eth logo black and white * tweak docs/README * update logo and logo-bw svg * bump 1.0.167 * homepage → home * add icon-code, icon-rocket * layout: home, remove configurable frontmatter: label, read, use * clean up config.js * bump 1.0.168 * fix missing comma from resolving conflicts * update sidebar, config nav, path * remove left whitespace on the header and footer logos * clean up home.vue, docs/README * update ethermint forum url in footer.links * comment out custom true to enable searchbar in subpages * remove external link icon for Guides * comments, revert custom true * clean up config.js, add specifications icon Co-authored-by: noot <36753753+noot@users.noreply.github.com> Co-authored-by: Federico Kunze <31522760+fedekunze@users.noreply.github.com> Co-authored-by: Federico Kunze <federico.kunze94@gmail.com> * final touches Co-authored-by: Cyrus Goh <hello@lovincyrus.com> Co-authored-by: noot <36753753+noot@users.noreply.github.com>
2020-07-02 08:22:45 +00:00
1. **[Concepts](01_concepts.md)**
2. **[State](02_state.md)**
3. **[State Transitions](03_state_transitions.md)**
4. **[Messages](04_messages.md)**
5. **[ABCI](05_abci.md)**
6. **[Events](06_events.md)**
7. **[Parameters](07_params.md)**
## Module Architecture
> **NOTE:**: If you're not familiar with the overall module structure from
the SDK modules, please check this [document](https://docs.cosmos.network/master/building-modules/structure.html) as
prerequisite reading.
```shell
evm/
├── client
│ └── cli
│ ├── query.go # CLI query commands for the module
   └── tx.go # CLI transaction commands for the module
├── keeper
│ ├── keeper.go # ABCI BeginBlock and EndBlock logic
│ ├── keeper.go # Store keeper that handles the business logic of the module and has access to a specific subtree of the state tree.
│ ├── params.go # Parameter getter and setter
│ ├── querier.go # State query functions
│ └── statedb.go # Functions from types/statedb with a passed in sdk.Context
├── types
│   ├── chain_config.go
│   ├── codec.go # Type registration for encoding
│   ├── errors.go # Module-specific errors
│   ├── events.go # Events exposed to the Tendermint PubSub/Websocket
│   ├── genesis.go # Genesis state for the module
│   ├── journal.go # Ethereum Journal of state transitions
│   ├── keys.go # Store keys and utility functions
│   ├── logs.go # Types for persisting Ethereum tx logs on state after chain upgrades
│   ├── msg.go # EVM module transaction messages
│   ├── params.go # Module parameters that can be customized with governance parameter change proposals
│   ├── state_object.go # EVM state object
│   ├── statedb.go # Implementation of the StateDb interface
│   ├── storage.go # Implementation of the Ethereum state storage map using arrays to prevent non-determinism
│   └── tx_data.go # Ethereum transaction data types
├── genesis.go # ABCI InitGenesis and ExportGenesis functionality
├── handler.go # Message routing
└── module.go # Module setup for the module manager
```