embark-area-51/lib/contracts/contract_deployer.js

264 lines
10 KiB
JavaScript

let async = require('async');
//require("../utils/debug_util.js")(__filename, async);
let utils = require('../utils/utils.js');
class ContractDeployer {
constructor(options) {
const self = this;
this.blockchain = options.blockchain;
this.logger = options.logger;
this.events = options.events;
this.plugins = options.plugins;
this.gasLimit = options.gasLimit;
self.events.setCommandHandler('deploy:contract', (contract, cb) => {
self.checkAndDeployContract(contract, null, cb);
});
}
// TODO: determining the arguments could also be in a module since it's not
// part of ta 'normal' contract deployment
determineArguments(suppliedArgs, contract, callback) {
const self = this;
let args = suppliedArgs;
if (!Array.isArray(args)) {
args = [];
let abi = contract.abiDefinition.find((abi) => abi.type === 'constructor');
for (let input of abi.inputs) {
let inputValue = suppliedArgs[input.name];
if (!inputValue) {
this.logger.error(__("{{inputName}} has not been defined for {{className}} constructor", {inputName: input.name, className: contract.className}));
}
args.push(inputValue || "");
}
}
async.map(args, (arg, nextEachCb) => {
if (arg[0] === "$") {
let contractName = arg.substr(1);
self.events.request('contracts:contract', contractName, (referedContract) => {
nextEachCb(null, referedContract.deployedAddress);
});
} else if (Array.isArray(arg)) {
async.map(arg, (sub_arg, nextSubEachCb) => {
if (sub_arg[0] === "$") {
let contractName = sub_arg.substr(1);
self.events.request('contracts:contract', contractName, (referedContract) => {
nextSubEachCb(null, referedContract.deployedAddress);
});
} else {
nextSubEachCb(null, sub_arg);
}
}, (err, subRealArgs) => {
nextEachCb(null, subRealArgs);
});
} else {
nextEachCb(null, arg);
}
}, callback);
}
checkAndDeployContract(contract, params, callback) {
let self = this;
contract.error = false;
if (contract.deploy === false) {
self.events.emit("deploy:contract:undeployed", contract);
return callback();
}
async.waterfall([
function _determineArguments(next) {
self.determineArguments(params || contract.args, contract, (err, realArgs) => {
if (err) {
return next(err);
}
contract.realArgs = realArgs;
next();
});
},
function deployIt(next) {
if (contract.address !== undefined) {
try {
utils.toChecksumAddress(contract.address);
} catch(e) {
self.logger.error(__("error deploying %s", contract.className));
self.logger.error(e.message);
contract.error = e.message;
self.events.emit("deploy:contract:error", contract);
return next(e.message);
}
contract.deployedAddress = contract.address;
self.logger.info(contract.className.bold.cyan + __(" already deployed at ").green + contract.address.bold.cyan);
self.events.emit("deploy:contract:deployed", contract);
return next();
}
// TODO find a better way to do that
if (process.env.isTest) {
return self.deployContract(contract, next);
}
// TODO: this should be a plugin API instead, if not existing, it should by default deploy the contract
self.events.request("deploy:contract:shouldDeploy", contract, function(trackedContract) {
if (!trackedContract) {
return self.deployContract(contract, next);
}
self.blockchain.getCode(trackedContract.address, function(_getCodeErr, codeInChain) {
if (codeInChain !== "0x") {
self.contractAlreadyDeployed(contract, trackedContract, next);
} else {
self.deployContract(contract, next);
}
});
});
}
], callback);
}
contractAlreadyDeployed(contract, trackedContract, callback) {
const self = this;
self.logger.info(contract.className.bold.cyan + __(" already deployed at ").green + trackedContract.address.bold.cyan);
contract.deployedAddress = trackedContract.address;
self.events.emit("deploy:contract:deployed", contract);
// TODO: can be moved into a afterDeploy event
// just need to figure out the gasLimit coupling issue
self.events.request('code-generator:contract:vanilla', contract, contract._gasLimit, (contractCode) => {
self.events.request('runcode:eval', contractCode);
return callback();
});
}
deployContract(contract, callback) {
let self = this;
let accounts = [];
let contractParams = (contract.realArgs || contract.args).slice();
let contractCode = contract.code;
let deploymentAccount = self.blockchain.defaultAccount();
let deployObject;
async.waterfall([
// TODO: can potentially go to a beforeDeploy plugin
function getAccounts(next) {
self.blockchain.getAccounts(function (err, _accounts) {
if (err) {
return next(new Error(err));
}
accounts = _accounts;
// applying deployer account configuration, if any
if (typeof contract.fromIndex == 'number') {
deploymentAccount = accounts[contract.fromIndex];
if (deploymentAccount === undefined) {
return next(__("error deploying") + " " + contract.className + ": " + __("no account found at index") + " " + contract.fromIndex + __(" check the config"));
}
}
if (typeof contract.from == 'string' && typeof contract.fromIndex != 'undefined') {
self.logger.warn(__('Both "from" and "fromIndex" are defined for contract') + ' "' + contract.className + '". ' + __('Using "from" as deployer account.'));
}
if (typeof contract.from == 'string') {
deploymentAccount = contract.from;
}
deploymentAccount = deploymentAccount || accounts[0];
next();
});
},
function doLinking(next) {
self.events.request('contracts:list', (_err, contracts) => {
for (let contractObj of contracts) {
let filename = contractObj.filename;
let deployedAddress = contractObj.deployedAddress;
if (deployedAddress) {
deployedAddress = deployedAddress.substr(2);
}
let linkReference = '__' + filename + ":" + contractObj.className;
if (contractCode.indexOf(linkReference) < 0) {
continue;
}
if (linkReference.length > 40) {
return next(new Error(__("{{linkReference}} is too long, try reducing the path of the contract ({{filename}}) and/or its name {{contractName}}", {linkReference: linkReference, filename: filename, contractName: contractObj.className})));
}
let toReplace = linkReference + "_".repeat(40 - linkReference.length);
if (deployedAddress === undefined) {
let libraryName = contractObj.className;
return next(new Error(__("{{contractName}} needs {{libraryName}} but an address was not found, did you deploy it or configured an address?", {contractName: contract.className, libraryName: libraryName})));
}
contractCode = contractCode.replace(new RegExp(toReplace, "g"), deployedAddress);
}
// saving code changes back to contract object
contract.code = contractCode;
next();
});
},
function applyBeforeDeploy(next) {
self.plugins.emitAndRunActionsForEvent('deploy:contract:beforeDeploy', {contract: contract}, next);
},
function createDeployObject(next) {
let contractObject = self.blockchain.ContractObject({abi: contract.abiDefinition});
try {
const dataCode = contractCode.startsWith('0x') ? contractCode : "0x" + contractCode;
deployObject = self.blockchain.deployContractObject(contractObject, {arguments: contractParams, data: dataCode});
} catch(e) {
if (e.message.indexOf('Invalid number of parameters for "undefined"') >= 0) {
return next(new Error(__("attempted to deploy %s without specifying parameters", contract.className)));
} else {
return next(new Error(e));
}
}
next();
},
function estimateCorrectGas(next) {
if (contract.gas === 'auto') {
return self.blockchain.estimateDeployContractGas(deployObject, (err, gasValue) => {
if (err) {
return next(err);
}
contract.gas = gasValue;
next();
});
}
next();
},
function deployTheContract(next) {
self.logger.info(__("deploying") + " " + contract.className.bold.cyan + " " + __("with").green + " " + contract.gas + " " + __("gas").green);
self.blockchain.deployContractFromObject(deployObject, {
from: deploymentAccount,
gas: contract.gas,
gasPrice: contract.gasPrice
}, function(error, receipt) {
if (error) {
contract.error = error.message;
self.events.emit("deploy:contract:error", contract);
return next(new Error("error deploying =" + contract.className + "= due to error: " + error.message));
}
self.logger.info(contract.className.bold.cyan + " " + __("deployed at").green + " " + receipt.contractAddress.bold.cyan);
contract.deployedAddress = receipt.contractAddress;
contract.transactionHash = receipt.transactionHash;
self.events.emit("deploy:contract:receipt", receipt);
self.events.emit("deploy:contract:deployed", contract);
// TODO: can be moved into a afterDeploy event
// just need to figure out the gasLimit coupling issue
self.events.request('code-generator:contract:vanilla', contract, contract._gasLimit, (contractCode) => {
self.events.request('runcode:eval', contractCode);
self.plugins.runActionsForEvent('deploy:contract:deployed', {contract: contract}, () => {
return next(null, receipt);
});
});
});
}
], callback);
}
}
module.exports = ContractDeployer;