PoC discount on fees when tokens are staked#13
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migrations/6_initialize_721token.js
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| case 'rinkeby': | ||
| erc20TokenAddress = '0xb05e292f89c6a82f5ed1be694dc7b6444866b364' | ||
| initialFees = 10 | ||
| initialFees = 10 ** 18 // 1 token |
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This may need to be a BigNumber, otherwise it'll loose some precision.
| const CodexTitleProxy = artifacts.require('./CodexTitleProxy.sol') | ||
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| module.exports = async (deployer, network, accounts) => { | ||
| const proxiedCodexTitle = CodexTitle.at(CodexTitleProxy.address) |
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I'm surprised CodexTitleProxy.address works without first waiting for CodexTitleProxy.deployed()... how does it know the deployed address? From the previous migration steps I guess?
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Yeah, from the previous migration step. We were already doing this in one other location, just decided to do it here because it's a bit cleaner
test/helpers/modifyMetadataHashes.js
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| // If fees are enabled, a Transfer event is fired in addition to the Modified event | ||
| const expectedLogsLength = feesEnabled ? 2 : 1 | ||
| const logIndex = feesEnabled ? 1 : 0 |
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This should maybe be something like modifiedLogIndex instead of just logIndex.
test/token/CodexTitle.test.js
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| hashedMetadata: { | ||
| name: web3.sha3('First token'), | ||
| description: web3.sha3('This is the first token'), | ||
| images: ['asdf'].map((image) => { |
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Maybe just make this:
images: [web3.sha3('image data')],Since you're not using the un-hashed versions anywhere.
test/token/CodexTitleProxy.test.js
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| hashedMetadata: { | ||
| name: web3.sha3('First token'), | ||
| description: web3.sha3('This is the first token'), | ||
| images: ['asdf'].map((image) => { |
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Will merge & rebase when addressing comments |
| * @title ERC900BasicStakeContainer | ||
| */ | ||
| contract ERC900BasicStakeContainer is ERC900 { | ||
| using SafeMath for uint256; |
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Some gas optimization is possible here if we deploy the library separately and then point to it (as opposed to bundling it with both contracts)
| } | ||
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| require( | ||
| codexToken.transferFrom(msg.sender, feeRecipient, calculatedFee), |
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The docs for transferFrom say Usage of this method is discouraged, use safeTransferFrom whenever possible which seems to safely handle transfers to contracts. Should we use that instead?
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We already know at this point the user who sent the tokens can hold tokens, so no harm in using transfer directly here and saving a bit of gas.
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Background
In the white paper we talk at length about the ability for users to stake tokens to receive reduced discounts on the protocol fees. This is a proof of concept implementation of how this will work.
In the current implementation, rather than receive a discount for the weight of a stake for a given address (this will be calculated by the time + size of stakes), it's a binary operation that disables fees.
Updates
Future work