Use cached demurrage in account redistribution application

python/tests/bench.py

@@ -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()

solidity/RedistributedDemurrageToken.sol

@@ -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);
+		nextRedistribution = toRedistribution(0, nextRedistributionDemurrage, totalSupply, nextPeriod);
-		emit Debug(bytes32(currentDemurrageAmount));
 		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;
 	}