Lash/clean and doc

.gitignore

@@ -0,0 +1,8 @@
+build/
+dist/
+*.egg-info
+__pycache__
+*.pyc
+gmon.out
+solidity/*.json
+solidity/*.bin

python/requirements.txt

@@ -1,2 +1,3 @@
-chainlib~=0.0.1a7
+chainlib~=0.0.3a1
-crypto-dev-signer~=0.4.13rc2
+eth-erc20~=0.0.9a1
+crypto-dev-signer~=0.4.14b3

python/sarafu_token/__init__.py

@@ -0,0 +1 @@
+from .token import RedistributedDemurrageToken

python/sarafu_token/data/__init__.py

@@ -0,0 +1,3 @@
+import os
+
+data_dir = os.path.realpath(os.path.dirname(__file__))

python/sarafu_token/runnable/deploy.py

@@ -0,0 +1,135 @@
+"""Deploy sarafu token
+
+.. moduleauthor:: Louis Holbrook <dev@holbrook.no>
+.. pgp:: 0826EDA1702D1E87C6E2875121D2E7BB88C2A746 
+
+"""
+
+# standard imports
+import sys
+import os
+import json
+import argparse
+import logging
+
+# third-party imports
+from crypto_dev_signer.eth.signer import ReferenceSigner as EIP155Signer
+from crypto_dev_signer.keystore.dict import DictKeystore
+from chainlib.chain import ChainSpec
+from chainlib.eth.nonce import (
+        RPCNonceOracle,
+        OverrideNonceOracle,
+        )
+from chainlib.eth.gas import (
+        RPCGasOracle,
+        OverrideGasOracle,
+        )
+from chainlib.eth.connection import EthHTTPConnection
+from chainlib.eth.tx import receipt
+from chainlib.eth.constant import ZERO_ADDRESS
+
+# local imports
+from sarafu_token import RedistributedDemurrageToken
+
+logging.basicConfig(level=logging.WARNING)
+logg = logging.getLogger()
+
+script_dir = os.path.dirname(__file__)
+data_dir = os.path.join(script_dir, '..', 'data')
+
+argparser = argparse.ArgumentParser()
+argparser.add_argument('-p', '--provider', dest='p', default='http://localhost:8545', type=str, help='Web3 provider url (http only)')
+argparser.add_argument('-w', action='store_true', help='Wait for the last transaction to be confirmed')
+argparser.add_argument('-ww', action='store_true', help='Wait for every transaction to be confirmed')
+argparser.add_argument('-i', '--chain-spec', dest='i', type=str, default='evm:ethereum:1', help='Chain specification string')
+argparser.add_argument('-y', '--key-file', dest='y', type=str, help='Ethereum keystore file to use for signing')
+argparser.add_argument('-v', action='store_true', help='Be verbose')
+argparser.add_argument('-vv', action='store_true', help='Be more verbose')
+argparser.add_argument('-d', action='store_true', help='Dump RPC calls to terminal and do not send')
+argparser.add_argument('--name', type=str, help='Token name')
+argparser.add_argument('--decimals', default=6, type=int, help='Token decimals')
+argparser.add_argument('--gas-price', type=int, dest='gas_price', help='Override gas price')
+argparser.add_argument('--nonce', type=int, help='Override transaction nonce')
+argparser.add_argument('--sink-address', default=ZERO_ADDRESS, type=str, help='demurrage level,ppm per minute') 
+argparser.add_argument('--redistribution-period', default=10080, type=int, help='redistribution period, minutes') # default 10080 = week
+argparser.add_argument('--env-prefix', default=os.environ.get('CONFINI_ENV_PREFIX'), dest='env_prefix', type=str, help='environment prefix for variables to overwrite configuration')
+argparser.add_argument('symbol', default='SRF', type=str, help='Token symbol')
+argparser.add_argument('demurrage_level', type=int, help='demurrage level, ppm per minute') 
+args = argparser.parse_args()
+
+if args.vv:
+    logg.setLevel(logging.DEBUG)
+elif args.v:
+    logg.setLevel(logging.INFO)
+
+block_last = args.w
+block_all = args.ww
+
+passphrase_env = 'ETH_PASSPHRASE'
+if args.env_prefix != None:
+    passphrase_env = args.env_prefix + '_' + passphrase_env
+passphrase = os.environ.get(passphrase_env)
+if passphrase == None:
+    logg.warning('no passphrase given')
+    passphrase=''
+
+signer_address = None
+keystore = DictKeystore()
+if args.y != None:
+    logg.debug('loading keystore file {}'.format(args.y))
+    signer_address = keystore.import_keystore_file(args.y, password=passphrase)
+    logg.debug('now have key for signer address {}'.format(signer_address))
+signer = EIP155Signer(keystore)
+
+chain_spec = ChainSpec.from_chain_str(args.i)
+
+rpc = EthHTTPConnection(args.p)
+nonce_oracle = None
+if args.nonce != None:
+    nonce_oracle = OverrideNonceOracle(signer_address, args.nonce)
+else:
+    nonce_oracle = RPCNonceOracle(signer_address, rpc)
+
+gas_oracle = None
+if args.gas_price !=None:
+    gas_oracle = OverrideGasOracle(price=args.gas_price, conn=rpc, code_callback=RedistributedDemurrageToken.gas)
+else:
+    gas_oracle = RPCGasOracle(rpc, code_callback=RedistributedDemurrageToken.gas)
+
+dummy = args.d
+
+token_name = args.name
+if token_name == None:
+    token_name = args.symbol
+
+def main():
+    c = RedistributedDemurrageToken(chain_spec, signer=signer, gas_oracle=gas_oracle, nonce_oracle=nonce_oracle)
+    (tx_hash_hex, o) = c.constructor(
+            signer_address,
+            token_name,
+            args.symbol,
+            args.decimals,
+            args.demurrage_level,
+            args.redistribution_period,
+            args.sink_address,
+            )
+    if dummy:
+        print(tx_hash_hex)
+        print(o)
+    else:
+        rpc.do(o)
+        if block_last:
+            r = rpc.wait(tx_hash_hex)
+            if r['status'] == 0:
+                sys.stderr.write('EVM revert while deploying contract. Wish I had more to tell you')
+                sys.exit(1)
+            # TODO: pass through translator for keys (evm tester uses underscore instead of camelcase)
+            address = r['contractAddress']
+
+            print(address)
+        else:
+            print(tx_hash_hex)
+
+
+if __name__ == '__main__':
+    main()

python/sarafu_token/token.py

@@ -0,0 +1,87 @@
+# standard imports
+import os
+import logging
+
+# external imports
+from chainlib.eth.tx import (
+        TxFactory,
+        TxFormat,
+        )
+from chainlib.hash import keccak256_string_to_hex
+from chainlib.eth.contract import (
+        ABIContractEncoder,
+        ABIContractType,
+        )
+
+# local imports
+from sarafu_token.data import data_dir
+
+logg = logging.getLogger(__name__)
+
+
+class RedistributedDemurrageToken(TxFactory):
+
+    __abi = None
+    __bytecode = None
+
+    def constructor(self, sender_address, name, symbol, decimals, demurrage_level, period_minutes, sink_address, tx_format=TxFormat.JSONRPC):
+        code = RedistributedDemurrageToken.bytecode()
+        enc = ABIContractEncoder()
+        enc.string(name)
+        enc.string(symbol)
+        enc.uint256(decimals)
+        enc.uint256(demurrage_level)
+        enc.uint256(period_minutes)
+        enc.address(sink_address)
+        code += enc.get()
+        tx = self.template(sender_address, None, use_nonce=True)
+        tx = self.set_code(tx, code)
+        return self.finalize(tx, tx_format)
+
+
+    @staticmethod
+    def gas(code=None):
+        return 3500000
+
+    @staticmethod
+    def abi():
+        if RedistributedDemurrageToken.__abi == None:
+            f = open(os.path.join(data_dir, 'RedistributedDemurrageToken.json'), 'r')
+            RedistributedDemurrageToken.__abi = json.load(f)
+            f.close()
+        return RedistributedDemurrageToken.__abi
+
+
+    @staticmethod
+    def bytecode():
+        if RedistributedDemurrageToken.__bytecode == None:
+            f = open(os.path.join(data_dir, 'RedistributedDemurrageToken.bin'), 'r')
+            RedistributedDemurrageToken.__bytecode = f.read()
+            f.close()
+        return RedistributedDemurrageToken.__bytecode
+
+
+    def add_minter(self, contract_address, sender_address, address, tx_format=TxFormat.JSONRPC):
+        enc = ABIContractEncoder()
+        enc.method('addMinter')
+        enc.typ(ABIContractType.ADDRESS)
+        enc.address(address)
+        data = enc.get()
+        tx = self.template(sender_address, contract_address, use_nonce=True)
+        tx = self.set_code(tx, data)
+        tx = self.finalize(tx, tx_format)
+        return tx
+
+
+    def mint_to(self, contract_address, sender_address, address, value, tx_format=TxFormat.JSONRPC):
+        enc = ABIContractEncoder()
+        enc.method('mintTo')
+        enc.typ(ABIContractType.ADDRESS)
+        enc.typ(ABIContractType.UINT256)
+        enc.address(address)
+        enc.uint256(value)
+        data = enc.get()
+        tx = self.template(sender_address, contract_address, use_nonce=True)
+        tx = self.set_code(tx, data)
+        tx = self.finalize(tx, tx_format)
+        return tx

python/setup.cfg

@@ -1,6 +1,6 @@
 [metadata]
 name = sarafu-token
-version = 0.0.1a2
+version = 0.0.1a8
 description = ERC20 token with redistributed continual demurrage
 author = Louis Holbrook
 author_email = dev@holbrook.no
@@ -25,11 +25,11 @@ include_package_data = True
 python_requires = >= 3.6
 packages =
 	sarafu_token
-	sarafu_token.runnable.legacy
+	sarafu_token.runnable
 install_requires =
-	chainlib~=0.0.1a7
+	chainlib~=0.0.3a1
-	crypto-dev-signer~=0.4.13rc2
+	crypto-dev-signer~=0.4.14b3
-	web3==5.12.2
+
 
 [options.package_data]
 * =
@@ -38,4 +38,4 @@ install_requires =
 
 [options.entry_points]
 console_scripts =
-	sarafu-token-deploy = sarafu_faucet.runnable.legacy.deploy:main
+	sarafu-token-deploy = sarafu_token.runnable.deploy:main

python/setup.py

@@ -1,5 +1,24 @@
 from setuptools import setup
 
+requirements = []
+f = open('requirements.txt', 'r')
+while True:
+    l = f.readline()
+    if l == '':
+        break
+    requirements.append(l.rstrip())
+f.close()
+
+test_requirements = []
+f = open('test_requirements.txt', 'r')
+while True:
+    l = f.readline()
+    if l == '':
+        break
+    test_requirements.append(l.rstrip())
+f.close()
+
+
 setup(
         package_data={
             '': [
@@ -7,4 +26,6 @@ setup(
                 ],
             },
         include_package_data=True,
+        install_requires=requirements,
+        tests_require=test_requirements,
         )

python/test_requirements.txt

@@ -0,0 +1,3 @@
+web3==5.12.2
+eth_tester==0.5.0b3
+py-evm==0.3.0a20

solidity/RedistributedDemurrageToken.sol

@@ -35,6 +35,8 @@ contract RedistributedDemurrageToken {
 	// Implements EIP172
 	address public owner;
 
+	address newOwner;
+
 	// Implements ERC20
 	string public name;
 
@@ -93,6 +95,9 @@ contract RedistributedDemurrageToken {
 	// Temporary event used in development, will be removed on prod
 	event Debug(bytes32 _foo);
 
+	// EIP173
+	event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); // EIP173
+
 	constructor(string memory _name, string memory _symbol, uint8 _decimals, uint256 _taxLevelMinute, uint256 _periodMinutes, address _defaultSinkAddress) public {
 		// ACL setup
 		owner = msg.sender;
@@ -509,7 +514,7 @@ contract RedistributedDemurrageToken {
 		return (_value * ppmDivider * 1000000) / demurrageAmount;
 	}
 
-	// ERC20, triggers tax and/or redistribution
+	// Implements ERC20, triggers tax and/or redistribution
 	function approve(address _spender, uint256 _value) public returns (bool) {
 		uint256 baseValue;
 
@@ -522,7 +527,7 @@ contract RedistributedDemurrageToken {
 		return true;
 	}
 
-	// ERC20, triggers tax and/or redistribution
+	// Implements ERC20, triggers tax and/or redistribution
 	function transfer(address _to, uint256 _value) public returns (bool) {
 		uint256 baseValue;
 		bool result;
@@ -537,7 +542,7 @@ contract RedistributedDemurrageToken {
 	}
 
 
-	// ERC20, triggers tax and/or redistribution
+	// Implements ERC20, triggers tax and/or redistribution
 	function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
 		uint256 baseValue;
 		bool result;
@@ -566,4 +571,41 @@ contract RedistributedDemurrageToken {
 		}
 		return true;
 	}
+
+	// Implements EIP173
+	function transferOwnership(address _newOwner) public returns (bool) {
+		require(msg.sender == owner);
+		newOwner = _newOwner;
+	}
+
+	// Implements OwnedAccepter
+	function acceptOwnership() public returns (bool) {
+		address oldOwner;
+
+		require(msg.sender == newOwner);
+		oldOwner = owner; 
+		owner = newOwner;
+		newOwner = address(0);
+		emit OwnershipTransferred(oldOwner, owner);
+	}
+
+	// Implements EIP165
+	function supportsInterface(bytes4 _sum) public pure returns (bool) {
+		if (_sum == 0xc6bb4b70) { // ERC20
+			return true;
+		}
+		if (_sum == 0x449a52f8) { // Minter
+			return true;
+		}
+		if (_sum == 0x01ffc9a7) { // EIP165
+			return true;
+		}
+		if (_sum == 0x9493f8b2) { // EIP173
+			return true;
+		}
+		if (_sum == 0x37a47be4) { // OwnedAccepter
+			return true;
+		}
+		return false;
+	}
 }