0g-chain/x/evmutil/spec/01_concepts.md

68 lines
4.4 KiB
Markdown
Raw Normal View History

Add EVM Support (#1215) * ibc v3 upgrade * ibc no longer uses confio * add proofs proto for ibc/v3 * wip add ethermint module * update cosmos to 0.45.0 * add ethermint proto & bug fixes * remove todo * update docs * fix a number of bugs * minor comments update * fix breaking tests * Wrap bank keeper for EVM to convert decimals (#1154) * Add bankkeeper wrapper for evm * Remove agas from init-new-chain.sh, use ukava for evm_denom * Fix sdk.Coins conversion, require min 1 coin amount * Remove gas from init script idk how this happened lol * Remove debug logging stmt * Restore original init ukava amounts * Fix inplace coins conversion * Use evmtypes.BankKeeper interface insteadof banktypes * Add TestGetBalance * Add doc comments, remove temp actualAmt vars actualAmt vars replaced with inline calls to make it more clear that the converted value is being used, as opposed to accidentally reusing the raw EVM amt. * Add TestSetBalance * Add TestIdempotentConversion * Panic if converted coin from EVM is 0 This happens if a value is less than 1ukava * Deep copy coins instead of in place modification * Update test coins amount * Add panic tests for small EVM amounts * Use evmtypes.BankKeeper as NewEVMBankKeeper param * Tidy test setup * ensure sdk config is set when creating new apps * Respond EVM bank keeper GetBalance with SpendableCoins Co-authored-by: Nick DeLuca <nickdeluca08@gmail.com> * further speed up docker builds * feat: restore previous keys add defaults, add eth flag (#1172) * feat: restore previous keys add defaults, add eth flag * remove outdated comment * fix: remove redundant flag default * evm bank keeper with akava handling * fix issues * add remaining tests * add emv module to app * add missing imports * clean up comments * wip akava keeper * evm keeper * fix genesis import * reduce module permissions * add bank keeper tests * cleanup tests * genesis tests * change defaults * add eth faucet key & fix issues * switch to kava ethermint * add a lot of tests * add balances invariant * add evm tests * Remove panic if Swagger disabled in config (#1155) (#1183) Co-authored-by: Derrick Lee <derrick@dlee.dev> * add invariant to catch any akava balance > 1 ukava * clarify name of balances invariant * connect invariants to app * fix evmbankkeeper akava issues * add spec for evmutil * remove zero balance accounts from state * minor adustments * update to ethermint 0.10.0 * fix eth ante * add missing godoc comment * Update x/evmutil/spec/01_concepts.md Co-authored-by: Kevin Davis <karzak@users.noreply.github.com> * Update x/evmutil/spec/01_concepts.md Co-authored-by: Kevin Davis <karzak@users.noreply.github.com> * Update ethermint to v0.12 (#1203) * update to ethermint v0.12.2 * use app.Options for new evm options * fix missed references to app.Options * use ethermint branch while waiting on upstream fix * evm migrations for tesnet alpha 2 (#1206) * update to ethermint v0.12.2 * use app.Options for new evm options * fix missed references to app.Options * use ethermint branch while waiting on upstream fix * add upgrade handler for evm-alpha testnet 2 * v17 migration setup + evm modules * refactor migrate states * x/feemarket migration * v17 migrations setup + evm modules migration (#1210) * v17 migration setup + evm modules * refactor migrate states * update gen time * fix: update genesis time in test output Co-authored-by: karzak <kjydavis3@gmail.com> * add savings module to app blockers Co-authored-by: Derrick Lee <derrick@dlee.dev> Co-authored-by: Nick DeLuca <nickdeluca08@gmail.com> Co-authored-by: rhuairahrighairigh <ruaridh.odonnell@gmail.com> Co-authored-by: Kevin Davis <karzak@users.noreply.github.com> Co-authored-by: Ruaridh <rhuairahrighairidh@users.noreply.github.com> Co-authored-by: karzak <kjydavis3@gmail.com>
2022-04-21 20:16:28 +00:00
<!--
order: 1
-->
# Concepts
## EVM Gas Denom
In order to use the EVM and be compatible with existing clients, the gas denom used by the EVM must be in 18 decimals. Since `ukava` has 6 decimals of precision, it cannot be used as the EVM gas denom directly.
2022-11-03 15:16:16 +00:00
To use the Kava token on the EVM, the evmutil module provides an `EvmBankKeeper` that is responsible for the conversion of `ukava` and `akava`. A user's excess `akava` balance is stored in the `x/evmutil` store, while its `ukava` balance remains in the cosmos-sdk `x/bank` module.
Add EVM Support (#1215) * ibc v3 upgrade * ibc no longer uses confio * add proofs proto for ibc/v3 * wip add ethermint module * update cosmos to 0.45.0 * add ethermint proto & bug fixes * remove todo * update docs * fix a number of bugs * minor comments update * fix breaking tests * Wrap bank keeper for EVM to convert decimals (#1154) * Add bankkeeper wrapper for evm * Remove agas from init-new-chain.sh, use ukava for evm_denom * Fix sdk.Coins conversion, require min 1 coin amount * Remove gas from init script idk how this happened lol * Remove debug logging stmt * Restore original init ukava amounts * Fix inplace coins conversion * Use evmtypes.BankKeeper interface insteadof banktypes * Add TestGetBalance * Add doc comments, remove temp actualAmt vars actualAmt vars replaced with inline calls to make it more clear that the converted value is being used, as opposed to accidentally reusing the raw EVM amt. * Add TestSetBalance * Add TestIdempotentConversion * Panic if converted coin from EVM is 0 This happens if a value is less than 1ukava * Deep copy coins instead of in place modification * Update test coins amount * Add panic tests for small EVM amounts * Use evmtypes.BankKeeper as NewEVMBankKeeper param * Tidy test setup * ensure sdk config is set when creating new apps * Respond EVM bank keeper GetBalance with SpendableCoins Co-authored-by: Nick DeLuca <nickdeluca08@gmail.com> * further speed up docker builds * feat: restore previous keys add defaults, add eth flag (#1172) * feat: restore previous keys add defaults, add eth flag * remove outdated comment * fix: remove redundant flag default * evm bank keeper with akava handling * fix issues * add remaining tests * add emv module to app * add missing imports * clean up comments * wip akava keeper * evm keeper * fix genesis import * reduce module permissions * add bank keeper tests * cleanup tests * genesis tests * change defaults * add eth faucet key & fix issues * switch to kava ethermint * add a lot of tests * add balances invariant * add evm tests * Remove panic if Swagger disabled in config (#1155) (#1183) Co-authored-by: Derrick Lee <derrick@dlee.dev> * add invariant to catch any akava balance > 1 ukava * clarify name of balances invariant * connect invariants to app * fix evmbankkeeper akava issues * add spec for evmutil * remove zero balance accounts from state * minor adustments * update to ethermint 0.10.0 * fix eth ante * add missing godoc comment * Update x/evmutil/spec/01_concepts.md Co-authored-by: Kevin Davis <karzak@users.noreply.github.com> * Update x/evmutil/spec/01_concepts.md Co-authored-by: Kevin Davis <karzak@users.noreply.github.com> * Update ethermint to v0.12 (#1203) * update to ethermint v0.12.2 * use app.Options for new evm options * fix missed references to app.Options * use ethermint branch while waiting on upstream fix * evm migrations for tesnet alpha 2 (#1206) * update to ethermint v0.12.2 * use app.Options for new evm options * fix missed references to app.Options * use ethermint branch while waiting on upstream fix * add upgrade handler for evm-alpha testnet 2 * v17 migration setup + evm modules * refactor migrate states * x/feemarket migration * v17 migrations setup + evm modules migration (#1210) * v17 migration setup + evm modules * refactor migrate states * update gen time * fix: update genesis time in test output Co-authored-by: karzak <kjydavis3@gmail.com> * add savings module to app blockers Co-authored-by: Derrick Lee <derrick@dlee.dev> Co-authored-by: Nick DeLuca <nickdeluca08@gmail.com> Co-authored-by: rhuairahrighairigh <ruaridh.odonnell@gmail.com> Co-authored-by: Kevin Davis <karzak@users.noreply.github.com> Co-authored-by: Ruaridh <rhuairahrighairidh@users.noreply.github.com> Co-authored-by: karzak <kjydavis3@gmail.com>
2022-04-21 20:16:28 +00:00
## `EvmBankKeeper` Overview
2022-11-03 15:16:16 +00:00
The `EvmBankKeeper` provides access to an account's total `akava` balance and the ability to transfer, mint, and burn `akava`. If anything other than the `akava` denom is requested, the `EvmBankKeeper` will panic.
Add EVM Support (#1215) * ibc v3 upgrade * ibc no longer uses confio * add proofs proto for ibc/v3 * wip add ethermint module * update cosmos to 0.45.0 * add ethermint proto & bug fixes * remove todo * update docs * fix a number of bugs * minor comments update * fix breaking tests * Wrap bank keeper for EVM to convert decimals (#1154) * Add bankkeeper wrapper for evm * Remove agas from init-new-chain.sh, use ukava for evm_denom * Fix sdk.Coins conversion, require min 1 coin amount * Remove gas from init script idk how this happened lol * Remove debug logging stmt * Restore original init ukava amounts * Fix inplace coins conversion * Use evmtypes.BankKeeper interface insteadof banktypes * Add TestGetBalance * Add doc comments, remove temp actualAmt vars actualAmt vars replaced with inline calls to make it more clear that the converted value is being used, as opposed to accidentally reusing the raw EVM amt. * Add TestSetBalance * Add TestIdempotentConversion * Panic if converted coin from EVM is 0 This happens if a value is less than 1ukava * Deep copy coins instead of in place modification * Update test coins amount * Add panic tests for small EVM amounts * Use evmtypes.BankKeeper as NewEVMBankKeeper param * Tidy test setup * ensure sdk config is set when creating new apps * Respond EVM bank keeper GetBalance with SpendableCoins Co-authored-by: Nick DeLuca <nickdeluca08@gmail.com> * further speed up docker builds * feat: restore previous keys add defaults, add eth flag (#1172) * feat: restore previous keys add defaults, add eth flag * remove outdated comment * fix: remove redundant flag default * evm bank keeper with akava handling * fix issues * add remaining tests * add emv module to app * add missing imports * clean up comments * wip akava keeper * evm keeper * fix genesis import * reduce module permissions * add bank keeper tests * cleanup tests * genesis tests * change defaults * add eth faucet key & fix issues * switch to kava ethermint * add a lot of tests * add balances invariant * add evm tests * Remove panic if Swagger disabled in config (#1155) (#1183) Co-authored-by: Derrick Lee <derrick@dlee.dev> * add invariant to catch any akava balance > 1 ukava * clarify name of balances invariant * connect invariants to app * fix evmbankkeeper akava issues * add spec for evmutil * remove zero balance accounts from state * minor adustments * update to ethermint 0.10.0 * fix eth ante * add missing godoc comment * Update x/evmutil/spec/01_concepts.md Co-authored-by: Kevin Davis <karzak@users.noreply.github.com> * Update x/evmutil/spec/01_concepts.md Co-authored-by: Kevin Davis <karzak@users.noreply.github.com> * Update ethermint to v0.12 (#1203) * update to ethermint v0.12.2 * use app.Options for new evm options * fix missed references to app.Options * use ethermint branch while waiting on upstream fix * evm migrations for tesnet alpha 2 (#1206) * update to ethermint v0.12.2 * use app.Options for new evm options * fix missed references to app.Options * use ethermint branch while waiting on upstream fix * add upgrade handler for evm-alpha testnet 2 * v17 migration setup + evm modules * refactor migrate states * x/feemarket migration * v17 migrations setup + evm modules migration (#1210) * v17 migration setup + evm modules * refactor migrate states * update gen time * fix: update genesis time in test output Co-authored-by: karzak <kjydavis3@gmail.com> * add savings module to app blockers Co-authored-by: Derrick Lee <derrick@dlee.dev> Co-authored-by: Nick DeLuca <nickdeluca08@gmail.com> Co-authored-by: rhuairahrighairigh <ruaridh.odonnell@gmail.com> Co-authored-by: Kevin Davis <karzak@users.noreply.github.com> Co-authored-by: Ruaridh <rhuairahrighairidh@users.noreply.github.com> Co-authored-by: karzak <kjydavis3@gmail.com>
2022-04-21 20:16:28 +00:00
2022-11-03 15:16:16 +00:00
This keeper implements the `x/evm` module's `BankKeeper` interface to enable the usage of `akava` denom on the EVM.
Add EVM Support (#1215) * ibc v3 upgrade * ibc no longer uses confio * add proofs proto for ibc/v3 * wip add ethermint module * update cosmos to 0.45.0 * add ethermint proto & bug fixes * remove todo * update docs * fix a number of bugs * minor comments update * fix breaking tests * Wrap bank keeper for EVM to convert decimals (#1154) * Add bankkeeper wrapper for evm * Remove agas from init-new-chain.sh, use ukava for evm_denom * Fix sdk.Coins conversion, require min 1 coin amount * Remove gas from init script idk how this happened lol * Remove debug logging stmt * Restore original init ukava amounts * Fix inplace coins conversion * Use evmtypes.BankKeeper interface insteadof banktypes * Add TestGetBalance * Add doc comments, remove temp actualAmt vars actualAmt vars replaced with inline calls to make it more clear that the converted value is being used, as opposed to accidentally reusing the raw EVM amt. * Add TestSetBalance * Add TestIdempotentConversion * Panic if converted coin from EVM is 0 This happens if a value is less than 1ukava * Deep copy coins instead of in place modification * Update test coins amount * Add panic tests for small EVM amounts * Use evmtypes.BankKeeper as NewEVMBankKeeper param * Tidy test setup * ensure sdk config is set when creating new apps * Respond EVM bank keeper GetBalance with SpendableCoins Co-authored-by: Nick DeLuca <nickdeluca08@gmail.com> * further speed up docker builds * feat: restore previous keys add defaults, add eth flag (#1172) * feat: restore previous keys add defaults, add eth flag * remove outdated comment * fix: remove redundant flag default * evm bank keeper with akava handling * fix issues * add remaining tests * add emv module to app * add missing imports * clean up comments * wip akava keeper * evm keeper * fix genesis import * reduce module permissions * add bank keeper tests * cleanup tests * genesis tests * change defaults * add eth faucet key & fix issues * switch to kava ethermint * add a lot of tests * add balances invariant * add evm tests * Remove panic if Swagger disabled in config (#1155) (#1183) Co-authored-by: Derrick Lee <derrick@dlee.dev> * add invariant to catch any akava balance > 1 ukava * clarify name of balances invariant * connect invariants to app * fix evmbankkeeper akava issues * add spec for evmutil * remove zero balance accounts from state * minor adustments * update to ethermint 0.10.0 * fix eth ante * add missing godoc comment * Update x/evmutil/spec/01_concepts.md Co-authored-by: Kevin Davis <karzak@users.noreply.github.com> * Update x/evmutil/spec/01_concepts.md Co-authored-by: Kevin Davis <karzak@users.noreply.github.com> * Update ethermint to v0.12 (#1203) * update to ethermint v0.12.2 * use app.Options for new evm options * fix missed references to app.Options * use ethermint branch while waiting on upstream fix * evm migrations for tesnet alpha 2 (#1206) * update to ethermint v0.12.2 * use app.Options for new evm options * fix missed references to app.Options * use ethermint branch while waiting on upstream fix * add upgrade handler for evm-alpha testnet 2 * v17 migration setup + evm modules * refactor migrate states * x/feemarket migration * v17 migrations setup + evm modules migration (#1210) * v17 migration setup + evm modules * refactor migrate states * update gen time * fix: update genesis time in test output Co-authored-by: karzak <kjydavis3@gmail.com> * add savings module to app blockers Co-authored-by: Derrick Lee <derrick@dlee.dev> Co-authored-by: Nick DeLuca <nickdeluca08@gmail.com> Co-authored-by: rhuairahrighairigh <ruaridh.odonnell@gmail.com> Co-authored-by: Kevin Davis <karzak@users.noreply.github.com> Co-authored-by: Ruaridh <rhuairahrighairidh@users.noreply.github.com> Co-authored-by: karzak <kjydavis3@gmail.com>
2022-04-21 20:16:28 +00:00
2022-11-03 15:16:16 +00:00
### `x/evm` Parameter Requirements
Add EVM Support (#1215) * ibc v3 upgrade * ibc no longer uses confio * add proofs proto for ibc/v3 * wip add ethermint module * update cosmos to 0.45.0 * add ethermint proto & bug fixes * remove todo * update docs * fix a number of bugs * minor comments update * fix breaking tests * Wrap bank keeper for EVM to convert decimals (#1154) * Add bankkeeper wrapper for evm * Remove agas from init-new-chain.sh, use ukava for evm_denom * Fix sdk.Coins conversion, require min 1 coin amount * Remove gas from init script idk how this happened lol * Remove debug logging stmt * Restore original init ukava amounts * Fix inplace coins conversion * Use evmtypes.BankKeeper interface insteadof banktypes * Add TestGetBalance * Add doc comments, remove temp actualAmt vars actualAmt vars replaced with inline calls to make it more clear that the converted value is being used, as opposed to accidentally reusing the raw EVM amt. * Add TestSetBalance * Add TestIdempotentConversion * Panic if converted coin from EVM is 0 This happens if a value is less than 1ukava * Deep copy coins instead of in place modification * Update test coins amount * Add panic tests for small EVM amounts * Use evmtypes.BankKeeper as NewEVMBankKeeper param * Tidy test setup * ensure sdk config is set when creating new apps * Respond EVM bank keeper GetBalance with SpendableCoins Co-authored-by: Nick DeLuca <nickdeluca08@gmail.com> * further speed up docker builds * feat: restore previous keys add defaults, add eth flag (#1172) * feat: restore previous keys add defaults, add eth flag * remove outdated comment * fix: remove redundant flag default * evm bank keeper with akava handling * fix issues * add remaining tests * add emv module to app * add missing imports * clean up comments * wip akava keeper * evm keeper * fix genesis import * reduce module permissions * add bank keeper tests * cleanup tests * genesis tests * change defaults * add eth faucet key & fix issues * switch to kava ethermint * add a lot of tests * add balances invariant * add evm tests * Remove panic if Swagger disabled in config (#1155) (#1183) Co-authored-by: Derrick Lee <derrick@dlee.dev> * add invariant to catch any akava balance > 1 ukava * clarify name of balances invariant * connect invariants to app * fix evmbankkeeper akava issues * add spec for evmutil * remove zero balance accounts from state * minor adustments * update to ethermint 0.10.0 * fix eth ante * add missing godoc comment * Update x/evmutil/spec/01_concepts.md Co-authored-by: Kevin Davis <karzak@users.noreply.github.com> * Update x/evmutil/spec/01_concepts.md Co-authored-by: Kevin Davis <karzak@users.noreply.github.com> * Update ethermint to v0.12 (#1203) * update to ethermint v0.12.2 * use app.Options for new evm options * fix missed references to app.Options * use ethermint branch while waiting on upstream fix * evm migrations for tesnet alpha 2 (#1206) * update to ethermint v0.12.2 * use app.Options for new evm options * fix missed references to app.Options * use ethermint branch while waiting on upstream fix * add upgrade handler for evm-alpha testnet 2 * v17 migration setup + evm modules * refactor migrate states * x/feemarket migration * v17 migrations setup + evm modules migration (#1210) * v17 migration setup + evm modules * refactor migrate states * update gen time * fix: update genesis time in test output Co-authored-by: karzak <kjydavis3@gmail.com> * add savings module to app blockers Co-authored-by: Derrick Lee <derrick@dlee.dev> Co-authored-by: Nick DeLuca <nickdeluca08@gmail.com> Co-authored-by: rhuairahrighairigh <ruaridh.odonnell@gmail.com> Co-authored-by: Kevin Davis <karzak@users.noreply.github.com> Co-authored-by: Ruaridh <rhuairahrighairidh@users.noreply.github.com> Co-authored-by: karzak <kjydavis3@gmail.com>
2022-04-21 20:16:28 +00:00
Since the EVM denom `akava` is required to use the `EvmBankKeeper`, it is necessary to set the `EVMDenom` param of the `x/evm` module to `akava`.
2022-11-03 15:16:16 +00:00
### Balance Calculation of `akava`
Add EVM Support (#1215) * ibc v3 upgrade * ibc no longer uses confio * add proofs proto for ibc/v3 * wip add ethermint module * update cosmos to 0.45.0 * add ethermint proto & bug fixes * remove todo * update docs * fix a number of bugs * minor comments update * fix breaking tests * Wrap bank keeper for EVM to convert decimals (#1154) * Add bankkeeper wrapper for evm * Remove agas from init-new-chain.sh, use ukava for evm_denom * Fix sdk.Coins conversion, require min 1 coin amount * Remove gas from init script idk how this happened lol * Remove debug logging stmt * Restore original init ukava amounts * Fix inplace coins conversion * Use evmtypes.BankKeeper interface insteadof banktypes * Add TestGetBalance * Add doc comments, remove temp actualAmt vars actualAmt vars replaced with inline calls to make it more clear that the converted value is being used, as opposed to accidentally reusing the raw EVM amt. * Add TestSetBalance * Add TestIdempotentConversion * Panic if converted coin from EVM is 0 This happens if a value is less than 1ukava * Deep copy coins instead of in place modification * Update test coins amount * Add panic tests for small EVM amounts * Use evmtypes.BankKeeper as NewEVMBankKeeper param * Tidy test setup * ensure sdk config is set when creating new apps * Respond EVM bank keeper GetBalance with SpendableCoins Co-authored-by: Nick DeLuca <nickdeluca08@gmail.com> * further speed up docker builds * feat: restore previous keys add defaults, add eth flag (#1172) * feat: restore previous keys add defaults, add eth flag * remove outdated comment * fix: remove redundant flag default * evm bank keeper with akava handling * fix issues * add remaining tests * add emv module to app * add missing imports * clean up comments * wip akava keeper * evm keeper * fix genesis import * reduce module permissions * add bank keeper tests * cleanup tests * genesis tests * change defaults * add eth faucet key & fix issues * switch to kava ethermint * add a lot of tests * add balances invariant * add evm tests * Remove panic if Swagger disabled in config (#1155) (#1183) Co-authored-by: Derrick Lee <derrick@dlee.dev> * add invariant to catch any akava balance > 1 ukava * clarify name of balances invariant * connect invariants to app * fix evmbankkeeper akava issues * add spec for evmutil * remove zero balance accounts from state * minor adustments * update to ethermint 0.10.0 * fix eth ante * add missing godoc comment * Update x/evmutil/spec/01_concepts.md Co-authored-by: Kevin Davis <karzak@users.noreply.github.com> * Update x/evmutil/spec/01_concepts.md Co-authored-by: Kevin Davis <karzak@users.noreply.github.com> * Update ethermint to v0.12 (#1203) * update to ethermint v0.12.2 * use app.Options for new evm options * fix missed references to app.Options * use ethermint branch while waiting on upstream fix * evm migrations for tesnet alpha 2 (#1206) * update to ethermint v0.12.2 * use app.Options for new evm options * fix missed references to app.Options * use ethermint branch while waiting on upstream fix * add upgrade handler for evm-alpha testnet 2 * v17 migration setup + evm modules * refactor migrate states * x/feemarket migration * v17 migrations setup + evm modules migration (#1210) * v17 migration setup + evm modules * refactor migrate states * update gen time * fix: update genesis time in test output Co-authored-by: karzak <kjydavis3@gmail.com> * add savings module to app blockers Co-authored-by: Derrick Lee <derrick@dlee.dev> Co-authored-by: Nick DeLuca <nickdeluca08@gmail.com> Co-authored-by: rhuairahrighairigh <ruaridh.odonnell@gmail.com> Co-authored-by: Kevin Davis <karzak@users.noreply.github.com> Co-authored-by: Ruaridh <rhuairahrighairidh@users.noreply.github.com> Co-authored-by: karzak <kjydavis3@gmail.com>
2022-04-21 20:16:28 +00:00
2022-11-03 15:16:16 +00:00
The `akava` balance of an account is derived from an account's **spendable** `ukava` balance times 10^12 (to derive its `akava` equivalent), plus the account's excess `akava` balance that can be accessed via the module `Keeper`.
Add EVM Support (#1215) * ibc v3 upgrade * ibc no longer uses confio * add proofs proto for ibc/v3 * wip add ethermint module * update cosmos to 0.45.0 * add ethermint proto & bug fixes * remove todo * update docs * fix a number of bugs * minor comments update * fix breaking tests * Wrap bank keeper for EVM to convert decimals (#1154) * Add bankkeeper wrapper for evm * Remove agas from init-new-chain.sh, use ukava for evm_denom * Fix sdk.Coins conversion, require min 1 coin amount * Remove gas from init script idk how this happened lol * Remove debug logging stmt * Restore original init ukava amounts * Fix inplace coins conversion * Use evmtypes.BankKeeper interface insteadof banktypes * Add TestGetBalance * Add doc comments, remove temp actualAmt vars actualAmt vars replaced with inline calls to make it more clear that the converted value is being used, as opposed to accidentally reusing the raw EVM amt. * Add TestSetBalance * Add TestIdempotentConversion * Panic if converted coin from EVM is 0 This happens if a value is less than 1ukava * Deep copy coins instead of in place modification * Update test coins amount * Add panic tests for small EVM amounts * Use evmtypes.BankKeeper as NewEVMBankKeeper param * Tidy test setup * ensure sdk config is set when creating new apps * Respond EVM bank keeper GetBalance with SpendableCoins Co-authored-by: Nick DeLuca <nickdeluca08@gmail.com> * further speed up docker builds * feat: restore previous keys add defaults, add eth flag (#1172) * feat: restore previous keys add defaults, add eth flag * remove outdated comment * fix: remove redundant flag default * evm bank keeper with akava handling * fix issues * add remaining tests * add emv module to app * add missing imports * clean up comments * wip akava keeper * evm keeper * fix genesis import * reduce module permissions * add bank keeper tests * cleanup tests * genesis tests * change defaults * add eth faucet key & fix issues * switch to kava ethermint * add a lot of tests * add balances invariant * add evm tests * Remove panic if Swagger disabled in config (#1155) (#1183) Co-authored-by: Derrick Lee <derrick@dlee.dev> * add invariant to catch any akava balance > 1 ukava * clarify name of balances invariant * connect invariants to app * fix evmbankkeeper akava issues * add spec for evmutil * remove zero balance accounts from state * minor adustments * update to ethermint 0.10.0 * fix eth ante * add missing godoc comment * Update x/evmutil/spec/01_concepts.md Co-authored-by: Kevin Davis <karzak@users.noreply.github.com> * Update x/evmutil/spec/01_concepts.md Co-authored-by: Kevin Davis <karzak@users.noreply.github.com> * Update ethermint to v0.12 (#1203) * update to ethermint v0.12.2 * use app.Options for new evm options * fix missed references to app.Options * use ethermint branch while waiting on upstream fix * evm migrations for tesnet alpha 2 (#1206) * update to ethermint v0.12.2 * use app.Options for new evm options * fix missed references to app.Options * use ethermint branch while waiting on upstream fix * add upgrade handler for evm-alpha testnet 2 * v17 migration setup + evm modules * refactor migrate states * x/feemarket migration * v17 migrations setup + evm modules migration (#1210) * v17 migration setup + evm modules * refactor migrate states * update gen time * fix: update genesis time in test output Co-authored-by: karzak <kjydavis3@gmail.com> * add savings module to app blockers Co-authored-by: Derrick Lee <derrick@dlee.dev> Co-authored-by: Nick DeLuca <nickdeluca08@gmail.com> Co-authored-by: rhuairahrighairigh <ruaridh.odonnell@gmail.com> Co-authored-by: Kevin Davis <karzak@users.noreply.github.com> Co-authored-by: Ruaridh <rhuairahrighairidh@users.noreply.github.com> Co-authored-by: karzak <kjydavis3@gmail.com>
2022-04-21 20:16:28 +00:00
2022-11-03 15:16:16 +00:00
### `akava` <> `ukava` Conversion
Add EVM Support (#1215) * ibc v3 upgrade * ibc no longer uses confio * add proofs proto for ibc/v3 * wip add ethermint module * update cosmos to 0.45.0 * add ethermint proto & bug fixes * remove todo * update docs * fix a number of bugs * minor comments update * fix breaking tests * Wrap bank keeper for EVM to convert decimals (#1154) * Add bankkeeper wrapper for evm * Remove agas from init-new-chain.sh, use ukava for evm_denom * Fix sdk.Coins conversion, require min 1 coin amount * Remove gas from init script idk how this happened lol * Remove debug logging stmt * Restore original init ukava amounts * Fix inplace coins conversion * Use evmtypes.BankKeeper interface insteadof banktypes * Add TestGetBalance * Add doc comments, remove temp actualAmt vars actualAmt vars replaced with inline calls to make it more clear that the converted value is being used, as opposed to accidentally reusing the raw EVM amt. * Add TestSetBalance * Add TestIdempotentConversion * Panic if converted coin from EVM is 0 This happens if a value is less than 1ukava * Deep copy coins instead of in place modification * Update test coins amount * Add panic tests for small EVM amounts * Use evmtypes.BankKeeper as NewEVMBankKeeper param * Tidy test setup * ensure sdk config is set when creating new apps * Respond EVM bank keeper GetBalance with SpendableCoins Co-authored-by: Nick DeLuca <nickdeluca08@gmail.com> * further speed up docker builds * feat: restore previous keys add defaults, add eth flag (#1172) * feat: restore previous keys add defaults, add eth flag * remove outdated comment * fix: remove redundant flag default * evm bank keeper with akava handling * fix issues * add remaining tests * add emv module to app * add missing imports * clean up comments * wip akava keeper * evm keeper * fix genesis import * reduce module permissions * add bank keeper tests * cleanup tests * genesis tests * change defaults * add eth faucet key & fix issues * switch to kava ethermint * add a lot of tests * add balances invariant * add evm tests * Remove panic if Swagger disabled in config (#1155) (#1183) Co-authored-by: Derrick Lee <derrick@dlee.dev> * add invariant to catch any akava balance > 1 ukava * clarify name of balances invariant * connect invariants to app * fix evmbankkeeper akava issues * add spec for evmutil * remove zero balance accounts from state * minor adustments * update to ethermint 0.10.0 * fix eth ante * add missing godoc comment * Update x/evmutil/spec/01_concepts.md Co-authored-by: Kevin Davis <karzak@users.noreply.github.com> * Update x/evmutil/spec/01_concepts.md Co-authored-by: Kevin Davis <karzak@users.noreply.github.com> * Update ethermint to v0.12 (#1203) * update to ethermint v0.12.2 * use app.Options for new evm options * fix missed references to app.Options * use ethermint branch while waiting on upstream fix * evm migrations for tesnet alpha 2 (#1206) * update to ethermint v0.12.2 * use app.Options for new evm options * fix missed references to app.Options * use ethermint branch while waiting on upstream fix * add upgrade handler for evm-alpha testnet 2 * v17 migration setup + evm modules * refactor migrate states * x/feemarket migration * v17 migrations setup + evm modules migration (#1210) * v17 migration setup + evm modules * refactor migrate states * update gen time * fix: update genesis time in test output Co-authored-by: karzak <kjydavis3@gmail.com> * add savings module to app blockers Co-authored-by: Derrick Lee <derrick@dlee.dev> Co-authored-by: Nick DeLuca <nickdeluca08@gmail.com> Co-authored-by: rhuairahrighairigh <ruaridh.odonnell@gmail.com> Co-authored-by: Kevin Davis <karzak@users.noreply.github.com> Co-authored-by: Ruaridh <rhuairahrighairidh@users.noreply.github.com> Co-authored-by: karzak <kjydavis3@gmail.com>
2022-04-21 20:16:28 +00:00
2022-11-03 15:16:16 +00:00
When an account does not have sufficient `akava` to cover a transfer or burn, the `EvmBankKeeper` will try to swap 1 `ukava` to its equivalent `akava` amount. It does this by transferring 1 `ukava` from the sender to the `x/evmutil` module account, then adding the equivalent `akava` amount to the sender's balance in the module state.
Add EVM Support (#1215) * ibc v3 upgrade * ibc no longer uses confio * add proofs proto for ibc/v3 * wip add ethermint module * update cosmos to 0.45.0 * add ethermint proto & bug fixes * remove todo * update docs * fix a number of bugs * minor comments update * fix breaking tests * Wrap bank keeper for EVM to convert decimals (#1154) * Add bankkeeper wrapper for evm * Remove agas from init-new-chain.sh, use ukava for evm_denom * Fix sdk.Coins conversion, require min 1 coin amount * Remove gas from init script idk how this happened lol * Remove debug logging stmt * Restore original init ukava amounts * Fix inplace coins conversion * Use evmtypes.BankKeeper interface insteadof banktypes * Add TestGetBalance * Add doc comments, remove temp actualAmt vars actualAmt vars replaced with inline calls to make it more clear that the converted value is being used, as opposed to accidentally reusing the raw EVM amt. * Add TestSetBalance * Add TestIdempotentConversion * Panic if converted coin from EVM is 0 This happens if a value is less than 1ukava * Deep copy coins instead of in place modification * Update test coins amount * Add panic tests for small EVM amounts * Use evmtypes.BankKeeper as NewEVMBankKeeper param * Tidy test setup * ensure sdk config is set when creating new apps * Respond EVM bank keeper GetBalance with SpendableCoins Co-authored-by: Nick DeLuca <nickdeluca08@gmail.com> * further speed up docker builds * feat: restore previous keys add defaults, add eth flag (#1172) * feat: restore previous keys add defaults, add eth flag * remove outdated comment * fix: remove redundant flag default * evm bank keeper with akava handling * fix issues * add remaining tests * add emv module to app * add missing imports * clean up comments * wip akava keeper * evm keeper * fix genesis import * reduce module permissions * add bank keeper tests * cleanup tests * genesis tests * change defaults * add eth faucet key & fix issues * switch to kava ethermint * add a lot of tests * add balances invariant * add evm tests * Remove panic if Swagger disabled in config (#1155) (#1183) Co-authored-by: Derrick Lee <derrick@dlee.dev> * add invariant to catch any akava balance > 1 ukava * clarify name of balances invariant * connect invariants to app * fix evmbankkeeper akava issues * add spec for evmutil * remove zero balance accounts from state * minor adustments * update to ethermint 0.10.0 * fix eth ante * add missing godoc comment * Update x/evmutil/spec/01_concepts.md Co-authored-by: Kevin Davis <karzak@users.noreply.github.com> * Update x/evmutil/spec/01_concepts.md Co-authored-by: Kevin Davis <karzak@users.noreply.github.com> * Update ethermint to v0.12 (#1203) * update to ethermint v0.12.2 * use app.Options for new evm options * fix missed references to app.Options * use ethermint branch while waiting on upstream fix * evm migrations for tesnet alpha 2 (#1206) * update to ethermint v0.12.2 * use app.Options for new evm options * fix missed references to app.Options * use ethermint branch while waiting on upstream fix * add upgrade handler for evm-alpha testnet 2 * v17 migration setup + evm modules * refactor migrate states * x/feemarket migration * v17 migrations setup + evm modules migration (#1210) * v17 migration setup + evm modules * refactor migrate states * update gen time * fix: update genesis time in test output Co-authored-by: karzak <kjydavis3@gmail.com> * add savings module to app blockers Co-authored-by: Derrick Lee <derrick@dlee.dev> Co-authored-by: Nick DeLuca <nickdeluca08@gmail.com> Co-authored-by: rhuairahrighairigh <ruaridh.odonnell@gmail.com> Co-authored-by: Kevin Davis <karzak@users.noreply.github.com> Co-authored-by: Ruaridh <rhuairahrighairidh@users.noreply.github.com> Co-authored-by: karzak <kjydavis3@gmail.com>
2022-04-21 20:16:28 +00:00
2022-11-03 15:16:16 +00:00
In reverse, if an account has enough `akava` balance for one or more `ukava`, the excess `akava` balance will be converted to `ukava`. This is done by removing the excess `akava` balance in the module store, then transferring the equivalent `ukava` coins from the `x/evmutil` module account to the target account.
Add EVM Support (#1215) * ibc v3 upgrade * ibc no longer uses confio * add proofs proto for ibc/v3 * wip add ethermint module * update cosmos to 0.45.0 * add ethermint proto & bug fixes * remove todo * update docs * fix a number of bugs * minor comments update * fix breaking tests * Wrap bank keeper for EVM to convert decimals (#1154) * Add bankkeeper wrapper for evm * Remove agas from init-new-chain.sh, use ukava for evm_denom * Fix sdk.Coins conversion, require min 1 coin amount * Remove gas from init script idk how this happened lol * Remove debug logging stmt * Restore original init ukava amounts * Fix inplace coins conversion * Use evmtypes.BankKeeper interface insteadof banktypes * Add TestGetBalance * Add doc comments, remove temp actualAmt vars actualAmt vars replaced with inline calls to make it more clear that the converted value is being used, as opposed to accidentally reusing the raw EVM amt. * Add TestSetBalance * Add TestIdempotentConversion * Panic if converted coin from EVM is 0 This happens if a value is less than 1ukava * Deep copy coins instead of in place modification * Update test coins amount * Add panic tests for small EVM amounts * Use evmtypes.BankKeeper as NewEVMBankKeeper param * Tidy test setup * ensure sdk config is set when creating new apps * Respond EVM bank keeper GetBalance with SpendableCoins Co-authored-by: Nick DeLuca <nickdeluca08@gmail.com> * further speed up docker builds * feat: restore previous keys add defaults, add eth flag (#1172) * feat: restore previous keys add defaults, add eth flag * remove outdated comment * fix: remove redundant flag default * evm bank keeper with akava handling * fix issues * add remaining tests * add emv module to app * add missing imports * clean up comments * wip akava keeper * evm keeper * fix genesis import * reduce module permissions * add bank keeper tests * cleanup tests * genesis tests * change defaults * add eth faucet key & fix issues * switch to kava ethermint * add a lot of tests * add balances invariant * add evm tests * Remove panic if Swagger disabled in config (#1155) (#1183) Co-authored-by: Derrick Lee <derrick@dlee.dev> * add invariant to catch any akava balance > 1 ukava * clarify name of balances invariant * connect invariants to app * fix evmbankkeeper akava issues * add spec for evmutil * remove zero balance accounts from state * minor adustments * update to ethermint 0.10.0 * fix eth ante * add missing godoc comment * Update x/evmutil/spec/01_concepts.md Co-authored-by: Kevin Davis <karzak@users.noreply.github.com> * Update x/evmutil/spec/01_concepts.md Co-authored-by: Kevin Davis <karzak@users.noreply.github.com> * Update ethermint to v0.12 (#1203) * update to ethermint v0.12.2 * use app.Options for new evm options * fix missed references to app.Options * use ethermint branch while waiting on upstream fix * evm migrations for tesnet alpha 2 (#1206) * update to ethermint v0.12.2 * use app.Options for new evm options * fix missed references to app.Options * use ethermint branch while waiting on upstream fix * add upgrade handler for evm-alpha testnet 2 * v17 migration setup + evm modules * refactor migrate states * x/feemarket migration * v17 migrations setup + evm modules migration (#1210) * v17 migration setup + evm modules * refactor migrate states * update gen time * fix: update genesis time in test output Co-authored-by: karzak <kjydavis3@gmail.com> * add savings module to app blockers Co-authored-by: Derrick Lee <derrick@dlee.dev> Co-authored-by: Nick DeLuca <nickdeluca08@gmail.com> Co-authored-by: rhuairahrighairigh <ruaridh.odonnell@gmail.com> Co-authored-by: Kevin Davis <karzak@users.noreply.github.com> Co-authored-by: Ruaridh <rhuairahrighairidh@users.noreply.github.com> Co-authored-by: karzak <kjydavis3@gmail.com>
2022-04-21 20:16:28 +00:00
The swap logic ensures that all `akava` is backed by the equivalent `ukava` balance stored in the module account.
2022-11-03 15:16:16 +00:00
## ERC20 token <> sdk.Coin Conversion
`x/evmutil` facilitates moving assets between Kava's EVM and Cosmos co-chains. This must be handled differently depending on which co-chain to which the asset it native. The messages controlling these flows involve two accounts:
1. The _initiator_ who sends coins from their co-chain
2. The _receiver_ who receives coins on the other co-chain
2022-11-03 15:16:16 +00:00
When converting assets from the EVM to the Cosmos co-chain, the initiator is an 0x EVM address and the receiver is a `kava1` Bech32 address.
When converting assets from the Cosmos co-chain to the EVM, the initiator is a `kava1` Bech32 address and the receiver is an 0x EVM address.
### Cosmos-Native Assets
`sdk.Coin`s native to the Cosmos co-chain can be converted to an ERC-20 representing the coin in the EVM. This works by transferring the coin from the initiator to `x/evmutil`'s module account and then minting an ERC-20 token to the receiver. Converting back, the initiator's ERC-20 representation of the coin is burned and the original Cosmos-native asset is transferred to the receiver.
Cosmos-native asset converstion is done through the use of the `MsgConvertCosmosCoinToERC20` & `MsgConvertCosmosCoinFromERC20` messages (see **[Messages](03_messages.md)**).
Only Cosmos co-chain denominations that are in the `AllowedCosmosDenoms` param (see **[Params](05_params.md)**) can be converted via these messages.
`AllowedCosmosDenoms` can be altered through governance.
### EVM-Native Assets
ERC-20 tokens native to the EVM can be converted into an `sdk.Coin` in the Cosmos ecosystem. This works by transferring the tokens to `x/evmutil`'s module account and then minting an `sdk.Coin` to the receiver. Converting back is the inverse: the `sdk.Coin` of the initiator is burned and the original ERC-20 tokens that were locked into the module account are transferred back to the receiver.
EVM-native asset conversion is done through the use of the `MsgConvertERC20ToCoin` & `MsgConvertCoinToERC20` messages (see **[Messages](03_messages.md)**).
Only ERC20 contract address that are in the `EnabledConversionPairs` param (see **[Params](05_params.md)**) can be converted via these messages.
`EnabledConversionPairs` can be altered through governance.
2022-11-03 15:16:16 +00:00
Add EVM Support (#1215) * ibc v3 upgrade * ibc no longer uses confio * add proofs proto for ibc/v3 * wip add ethermint module * update cosmos to 0.45.0 * add ethermint proto & bug fixes * remove todo * update docs * fix a number of bugs * minor comments update * fix breaking tests * Wrap bank keeper for EVM to convert decimals (#1154) * Add bankkeeper wrapper for evm * Remove agas from init-new-chain.sh, use ukava for evm_denom * Fix sdk.Coins conversion, require min 1 coin amount * Remove gas from init script idk how this happened lol * Remove debug logging stmt * Restore original init ukava amounts * Fix inplace coins conversion * Use evmtypes.BankKeeper interface insteadof banktypes * Add TestGetBalance * Add doc comments, remove temp actualAmt vars actualAmt vars replaced with inline calls to make it more clear that the converted value is being used, as opposed to accidentally reusing the raw EVM amt. * Add TestSetBalance * Add TestIdempotentConversion * Panic if converted coin from EVM is 0 This happens if a value is less than 1ukava * Deep copy coins instead of in place modification * Update test coins amount * Add panic tests for small EVM amounts * Use evmtypes.BankKeeper as NewEVMBankKeeper param * Tidy test setup * ensure sdk config is set when creating new apps * Respond EVM bank keeper GetBalance with SpendableCoins Co-authored-by: Nick DeLuca <nickdeluca08@gmail.com> * further speed up docker builds * feat: restore previous keys add defaults, add eth flag (#1172) * feat: restore previous keys add defaults, add eth flag * remove outdated comment * fix: remove redundant flag default * evm bank keeper with akava handling * fix issues * add remaining tests * add emv module to app * add missing imports * clean up comments * wip akava keeper * evm keeper * fix genesis import * reduce module permissions * add bank keeper tests * cleanup tests * genesis tests * change defaults * add eth faucet key & fix issues * switch to kava ethermint * add a lot of tests * add balances invariant * add evm tests * Remove panic if Swagger disabled in config (#1155) (#1183) Co-authored-by: Derrick Lee <derrick@dlee.dev> * add invariant to catch any akava balance > 1 ukava * clarify name of balances invariant * connect invariants to app * fix evmbankkeeper akava issues * add spec for evmutil * remove zero balance accounts from state * minor adustments * update to ethermint 0.10.0 * fix eth ante * add missing godoc comment * Update x/evmutil/spec/01_concepts.md Co-authored-by: Kevin Davis <karzak@users.noreply.github.com> * Update x/evmutil/spec/01_concepts.md Co-authored-by: Kevin Davis <karzak@users.noreply.github.com> * Update ethermint to v0.12 (#1203) * update to ethermint v0.12.2 * use app.Options for new evm options * fix missed references to app.Options * use ethermint branch while waiting on upstream fix * evm migrations for tesnet alpha 2 (#1206) * update to ethermint v0.12.2 * use app.Options for new evm options * fix missed references to app.Options * use ethermint branch while waiting on upstream fix * add upgrade handler for evm-alpha testnet 2 * v17 migration setup + evm modules * refactor migrate states * x/feemarket migration * v17 migrations setup + evm modules migration (#1210) * v17 migration setup + evm modules * refactor migrate states * update gen time * fix: update genesis time in test output Co-authored-by: karzak <kjydavis3@gmail.com> * add savings module to app blockers Co-authored-by: Derrick Lee <derrick@dlee.dev> Co-authored-by: Nick DeLuca <nickdeluca08@gmail.com> Co-authored-by: rhuairahrighairigh <ruaridh.odonnell@gmail.com> Co-authored-by: Kevin Davis <karzak@users.noreply.github.com> Co-authored-by: Ruaridh <rhuairahrighairidh@users.noreply.github.com> Co-authored-by: karzak <kjydavis3@gmail.com>
2022-04-21 20:16:28 +00:00
## Module Keeper
The module Keeper provides access to an account's excess `akava` balance and the ability to update the balance.