cicnet/erc20-demurrage-token
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Use cached demurrage in account redistribution application

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nolash 2021-02-06 22:04:39 +01:00
parent 3ae75075e4
commit a8ff826dad
Signed by: lash
GPG Key ID: 21D2E7BB88C2A746
2 changed files with 167 additions and 5 deletions
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158
python/tests/bench.py
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@ -47,6 +47,14 @@ class Test(unittest.TestCase):
pass
def test_construct(self):
period = 10
c = self.w3.eth.contract(abi=self.abi, bytecode=self.bytecode)
tx_hash = c.constructor('Foo Token', 'FOO', 6, TAX_LEVEL * (10 ** 32), period, self.sink_address).transact({'from': self.w3.eth.accounts[0]})
r = self.w3.eth.getTransactionReceipt(tx_hash)
print('construct: {}'.format(r['gasUsed']))
def test_gas_changeperiod(self):
period = 43200
for i in range(5):
@ -64,7 +72,155 @@ class Test(unittest.TestCase):
tx_hash = contract.functions.changePeriod().transact()
r = self.w3.eth.getTransactionReceipt(tx_hash)
print('{} ({}): {}'.format(i, 60 * (10 ** i), r['gasUsed']))
print('changePeriod {} ({}): {}'.format(i, 60 * (10 ** i), r['gasUsed']))
def test_mint(self):
period = 10
c = self.w3.eth.contract(abi=self.abi, bytecode=self.bytecode)
tx_hash = c.constructor('Foo Token', 'FOO', 6, TAX_LEVEL * (10 ** 32), period, self.sink_address).transact({'from': self.w3.eth.accounts[0]})
r = self.w3.eth.getTransactionReceipt(tx_hash)
contract = self.w3.eth.contract(abi=self.abi, address=r.contractAddress)
start_block = self.w3.eth.blockNumber
b = self.w3.eth.getBlock(start_block)
start_time = b['timestamp']
tx_hash = contract.functions.mintTo(self.w3.eth.accounts[1], 1000000).transact({'from': self.w3.eth.accounts[0]})
r = self.w3.eth.getTransactionReceipt(tx_hash)
print ('mintTo: {}'.format(r['gasUsed']))
def test_transfer(self):
period = 10
c = self.w3.eth.contract(abi=self.abi, bytecode=self.bytecode)
tx_hash = c.constructor('Foo Token', 'FOO', 6, TAX_LEVEL * (10 ** 32), period, self.sink_address).transact({'from': self.w3.eth.accounts[0]})
r = self.w3.eth.getTransactionReceipt(tx_hash)
contract = self.w3.eth.contract(abi=self.abi, address=r.contractAddress)
start_block = self.w3.eth.blockNumber
b = self.w3.eth.getBlock(start_block)
start_time = b['timestamp']
contract.functions.mintTo(self.w3.eth.accounts[1], 1000000).transact({'from': self.w3.eth.accounts[0]})
tx_hash = contract.functions.transfer(self.w3.eth.accounts[2], 1000000).transact({'from': self.w3.eth.accounts[1]})
r = self.w3.eth.getTransactionReceipt(tx_hash)
print ('transfer: {}'.format(r['gasUsed']))
def test_approve(self):
period = 10
c = self.w3.eth.contract(abi=self.abi, bytecode=self.bytecode)
tx_hash = c.constructor('Foo Token', 'FOO', 6, TAX_LEVEL * (10 ** 32), period, self.sink_address).transact({'from': self.w3.eth.accounts[0]})
r = self.w3.eth.getTransactionReceipt(tx_hash)
contract = self.w3.eth.contract(abi=self.abi, address=r.contractAddress)
start_block = self.w3.eth.blockNumber
b = self.w3.eth.getBlock(start_block)
start_time = b['timestamp']
contract.functions.mintTo(self.w3.eth.accounts[1], 1000000).transact({'from': self.w3.eth.accounts[0]})
tx_hash = contract.functions.approve(self.w3.eth.accounts[2], 1000000).transact({'from': self.w3.eth.accounts[1]})
r = self.w3.eth.getTransactionReceipt(tx_hash)
print ('approve: {}'.format(r['gasUsed']))
def test_transferfrom(self):
period = 10
c = self.w3.eth.contract(abi=self.abi, bytecode=self.bytecode)
tx_hash = c.constructor('Foo Token', 'FOO', 6, TAX_LEVEL * (10 ** 32), period, self.sink_address).transact({'from': self.w3.eth.accounts[0]})
r = self.w3.eth.getTransactionReceipt(tx_hash)
contract = self.w3.eth.contract(abi=self.abi, address=r.contractAddress)
start_block = self.w3.eth.blockNumber
b = self.w3.eth.getBlock(start_block)
start_time = b['timestamp']
contract.functions.mintTo(self.w3.eth.accounts[1], 1000000).transact({'from': self.w3.eth.accounts[0]})
contract.functions.approve(self.w3.eth.accounts[2], 1000000).transact({'from': self.w3.eth.accounts[1]})
tx_hash = contract.functions.transferFrom(self.w3.eth.accounts[1], self.w3.eth.accounts[3], 1000000).transact({'from': self.w3.eth.accounts[2]})
r = self.w3.eth.getTransactionReceipt(tx_hash)
print ('transferFrom: {}'.format(r['gasUsed']))
def test_redistribute_default(self):
period = 10
c = self.w3.eth.contract(abi=self.abi, bytecode=self.bytecode)
tx_hash = c.constructor('Foo Token', 'FOO', 6, TAX_LEVEL * (10 ** 32), period, self.sink_address).transact({'from': self.w3.eth.accounts[0]})
r = self.w3.eth.getTransactionReceipt(tx_hash)
contract = self.w3.eth.contract(abi=self.abi, address=r.contractAddress)
start_block = self.w3.eth.blockNumber
b = self.w3.eth.getBlock(start_block)
start_time = b['timestamp']
for i in range(100):
addr = web3.Web3.toChecksumAddress('0x' + os.urandom(20).hex())
contract.functions.mintTo(addr, 1000000 * (i+1)).transact({'from': self.w3.eth.accounts[0]})
self.eth_tester.time_travel(start_time + period * 60 + 1)
redistribution = contract.functions.redistributions(0).call()
tx_hash = contract.functions.changePeriod().transact({'from': self.w3.eth.accounts[2]})
r = self.w3.eth.getTransactionReceipt(tx_hash)
print ('chainPeriod -> defaultRedistribution: {}'.format(r['gasUsed']))
def test_redistribution_account(self):
period = 10
c = self.w3.eth.contract(abi=self.abi, bytecode=self.bytecode)
tx_hash = c.constructor('Foo Token', 'FOO', 6, TAX_LEVEL * (10 ** 32), period, self.sink_address).transact({'from': self.w3.eth.accounts[0]})
r = self.w3.eth.getTransactionReceipt(tx_hash)
contract = self.w3.eth.contract(abi=self.abi, address=r.contractAddress)
start_block = self.w3.eth.blockNumber
b = self.w3.eth.getBlock(start_block)
start_time = b['timestamp']
contract.functions.mintTo(self.w3.eth.accounts[1], 1000000).transact({'from': self.w3.eth.accounts[0]})
contract.functions.transfer(self.w3.eth.accounts[2], 1000000).transact({'from': self.w3.eth.accounts[1]})
for i in range(100):
addr = web3.Web3.toChecksumAddress('0x' + os.urandom(20).hex())
contract.functions.mintTo(addr, 1000000 * (i+1)).transact({'from': self.w3.eth.accounts[0]})
self.eth_tester.time_travel(start_time + period * 60 + 1)
redistribution = contract.functions.redistributions(0).call()
tx_hash = contract.functions.applyRedistributionOnAccount(self.w3.eth.accounts[1]).transact({'from': self.w3.eth.accounts[2]})
r = self.w3.eth.getTransactionReceipt(tx_hash)
self.assertEqual(r.logs[0].topics[0].hex(), '0x9a2a887706623ad3ff7fc85652deeceabe9fe1e00466c597972079ee91ea40d3')
print ('redistribute account: {}'.format(r['gasUsed']))
def test_redistribution_account_transfer(self):
period = 10
c = self.w3.eth.contract(abi=self.abi, bytecode=self.bytecode)
tx_hash = c.constructor('Foo Token', 'FOO', 6, TAX_LEVEL * (10 ** 32), period, self.sink_address).transact({'from': self.w3.eth.accounts[0]})
r = self.w3.eth.getTransactionReceipt(tx_hash)
contract = self.w3.eth.contract(abi=self.abi, address=r.contractAddress)
start_block = self.w3.eth.blockNumber
b = self.w3.eth.getBlock(start_block)
start_time = b['timestamp']
contract.functions.mintTo(self.w3.eth.accounts[1], 2000000).transact({'from': self.w3.eth.accounts[0]})
contract.functions.transfer(self.w3.eth.accounts[2], 1000000).transact({'from': self.w3.eth.accounts[1]})
for i in range(10):
addr = web3.Web3.toChecksumAddress('0x' + os.urandom(20).hex())
contract.functions.mintTo(addr, 1000000 * (i+1)).transact({'from': self.w3.eth.accounts[0]})
self.eth_tester.time_travel(start_time + period * 60 + 1)
redistribution = contract.functions.redistributions(0).call()
contract.functions.changePeriod().transact({'from': self.w3.eth.accounts[0]})
tx_hash = contract.functions.transfer(self.w3.eth.accounts[3], 100000).transact({'from': self.w3.eth.accounts[1]})
r = self.w3.eth.getTransactionReceipt(tx_hash)
self.assertEqual(r.logs[0].topics[0].hex(), '0x9a2a887706623ad3ff7fc85652deeceabe9fe1e00466c597972079ee91ea40d3')
print ('redistribute account: {}'.format(r['gasUsed']))
if __name__ == '__main__':
unittest.main()

14
solidity/RedistributedDemurrageToken.sol
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@ -30,6 +30,7 @@ contract RedistributedDemurrageToken {
event Mint(address indexed _minter, address indexed _beneficiary, uint256 _value);
event Debug(bytes32 _foo);
event Decayed(uint256 indexed _period, uint256 indexed _periodCount, uint256 indexed _oldAmount, uint256 _newAmount);
event Period(uint256 _period);
event Redistribution(address indexed _account, uint256 indexed _period, uint256 _value);
constructor(string memory _name, string memory _symbol, uint8 _decimals, uint256 _taxLevelMinute, uint256 _periodMinutes, address _defaultSinkAddress) public {
@ -344,6 +345,7 @@ contract RedistributedDemurrageToken {
uint256 nextRedistributionDemurrage;
uint256 demurrageCounts;
uint256 periodTimestamp;
uint256 nextPeriod;
currentRedistribution = checkPeriod();
if (currentRedistribution == bytes32(0x00)) {
@ -351,6 +353,7 @@ contract RedistributedDemurrageToken {
}
currentPeriod = toRedistributionPeriod(currentRedistribution);
nextPeriod = currentPeriod + 1;
periodTimestamp = getPeriodTimeDelta(currentPeriod);
applyDemurrage();
@ -363,8 +366,7 @@ contract RedistributedDemurrageToken {
nextRedistributionDemurrage = currentDemurrageAmount / ppmDivider;
}
nextRedistribution = toRedistribution(0, nextRedistributionDemurrage, totalSupply, currentPeriod + 1);
emit Debug(bytes32(currentDemurrageAmount));
nextRedistribution = toRedistribution(0, nextRedistributionDemurrage, totalSupply, nextPeriod);
redistributions.push(nextRedistribution);
currentParticipants = toRedistributionParticipants(currentRedistribution);
@ -374,6 +376,7 @@ contract RedistributedDemurrageToken {
currentRemainder = remainder(currentParticipants, totalSupply); // we can use totalSupply directly because it will always be the same as the recorded supply on the current redistribution
applyRemainderOnPeriod(currentRemainder, currentPeriod);
}
emit Period(nextPeriod);
return true;
}
@ -416,6 +419,7 @@ contract RedistributedDemurrageToken {
uint256 baseValue;
uint256 value;
uint256 period;
uint256 demurrage;
period = accountPeriod(_account);
if (period == 0 || period >= actualPeriod()) {
@ -428,8 +432,9 @@ contract RedistributedDemurrageToken {
}
supply = toRedistributionSupply(periodRedistribution);
demurrage = toRedistributionDemurrageModifier(periodRedistribution);
baseValue = ((supply / participants) * (taxLevel / 1000000)) / ppmDivider;
value = decayBy(baseValue, period - 1);
value = (baseValue * demurrage) / 1000000;
account[_account] &= bytes32(0xffffffffffffffffffffffffffffffffffffff00000000ffffffffffffffffff);
increaseBaseBalance(_account, value);
@ -467,7 +472,7 @@ contract RedistributedDemurrageToken {
// TODO: Prefer to truncate the result, instead it seems to round to nearest :/
baseValue = toBaseAmount(_value);
result = transferBase(msg.sender, _to, baseValue);
emit Transfer(msg.sender, _to, _value);
return result;
}
@ -484,6 +489,7 @@ contract RedistributedDemurrageToken {
require(allowance[_from][msg.sender] >= baseValue);
result = transferBase(_from, _to, baseValue);
emit Transfer(_from, _to, _value);
return result;
}