mirror of https://github.com/embarklabs/embark.git
261 lines
9.9 KiB
JavaScript
261 lines
9.9 KiB
JavaScript
const fs = require('../core/fs.js');
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const async = require('async');
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const ProcessLauncher = require('../core/processes/processLauncher');
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const utils = require('../utils/utils.js');
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const constants = require('../constants');
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class Pipeline {
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constructor(options) {
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this.env = options.env;
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this.buildDir = options.buildDir;
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this.contractsFiles = options.contractsFiles;
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this.assetFiles = options.assetFiles;
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this.events = options.events;
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this.logger = options.logger;
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this.plugins = options.plugins;
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this.webpackConfigName = options.webpackConfigName;
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this.pipelinePlugins = this.plugins.getPluginsFor('pipeline');
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this.isFirstBuild = true;
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}
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build(abi, contractsJSON, path, callback) {
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let self = this;
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const importsList = {};
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let placeholderPage;
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if (!this.assetFiles || !Object.keys(this.assetFiles).length) {
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return callback();
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}
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async.waterfall([
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function createPlaceholderPage(next){
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if (self.isFirstBuild) {
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self.isFirstBuild = false;
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return next();
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}
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self.events.request('build-placeholder', next);
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},
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function buildTheContracts(next) {
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self.buildContracts(next);
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},
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function buildWeb3(next) {
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self.buildWeb3JS(next);
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},
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function createImportList(next) {
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importsList["Embark/EmbarkJS"] = fs.dappPath(".embark", 'embark.js');
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importsList["Embark/web3"] = fs.dappPath(".embark", 'web3_instance.js');
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importsList["Embark/contracts"] = fs.dappPath(".embark/contracts", '');
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self.plugins.getPluginsProperty('imports', 'imports').forEach(function (importObject) {
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let [importName, importLocation] = importObject;
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importsList[importName] = importLocation;
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});
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next();
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},
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function writeContracts(next) {
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self.events.request('contracts:list', (_err, contracts) => {
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// ensure the .embark/contracts directory exists (create if not exists)
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fs.mkdirp(fs.dappPath(".embark/contracts", ''), (err) => {
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if(err) return next(err);
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// Create a file .embark/contracts/index.js that requires all contract files
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// Used to enable alternate import syntax:
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// e.g. import {Token} from 'Embark/contracts'
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// e.g. import * as Contracts from 'Embark/contracts'
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let importsHelperFile = fs.createWriteStream(fs.dappPath(".embark/contracts", 'index.js'));
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importsHelperFile.write('module.exports = {\n');
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async.eachOf(contracts, (contract, idx, eachCb) => {
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self.events.request('code-generator:contract', contract.className, (contractCode) => {
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let filePath = fs.dappPath(".embark/contracts", contract.className + '.js');
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importsList["Embark/contracts/" + contract.className] = filePath;
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fs.writeFile(filePath, contractCode, eachCb);
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// add the contract to the exports list to support alternate import syntax
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importsHelperFile.write(`"${contract.className}": require('./${contract.className}').default`);
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if(idx < contracts.length - 1) importsHelperFile.write(',\n'); // add a comma if we have more contracts to add
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});
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}, function(){
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importsHelperFile.write('\n}'); // close the module.exports = {}
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importsHelperFile.close(next); // close the write stream
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});
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});
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});
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},
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function runWebpack(next) {
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self.logger.info(__(`running webpack with '${self.webpackConfigName}' config...`));
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Object.keys(self.assetFiles)
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.filter(key => key.match(/\.js?$/))
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.forEach(key => {
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self.logger.info(__("writing file") + " " + (utils.joinPath(self.buildDir, key)).bold.dim);
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});
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let built = false;
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const webpackProcess = new ProcessLauncher({
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modulePath: utils.joinPath(__dirname, 'webpackProcess.js'),
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logger: self.logger,
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events: self.events,
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exitCallback: function (code) {
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if (!built) {
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return next(`Webpack build exited with code ${code} before the process finished`);
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}
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if (code) {
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self.logger.error(__('Webpack build process exited with code ', code));
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}
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}
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});
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webpackProcess.send({action: constants.pipeline.init, options: {webpackConfigName: self.webpackConfigName}});
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webpackProcess.send({action: constants.pipeline.build, assets: self.assetFiles, importsList});
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webpackProcess.once('result', constants.pipeline.built, (msg) => {
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built = true;
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webpackProcess.kill();
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return next(msg.error);
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});
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},
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function assetFileWrite(next) {
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async.eachOf(
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// assetFileWrite should not process .js files
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Object.keys(self.assetFiles)
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.filter(key => !key.match(/\.js?$/))
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.reduce((obj, key) => {
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obj[key] = self.assetFiles[key];
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return obj;
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}, {}),
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function (files, targetFile, cb) {
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const isDir = targetFile.slice(-1) === '/' || targetFile.slice(-1) === '\\' || targetFile.indexOf('.') === -1;
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// if it's not a directory
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if (!isDir) {
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self.logger.info(__("writing file") + " " + (utils.joinPath(self.buildDir, targetFile)).bold.dim);
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}
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async.map(
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files,
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function (file, fileCb) {
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self.logger.trace("reading " + file.filename);
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return file.content(function (fileContent) {
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self.runPlugins(file, fileContent, fileCb);
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});
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},
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function (err, contentFiles) {
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if (err) {
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self.logger.error(__('errors found while generating') + ' ' + targetFile);
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}
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let dir = targetFile.split('/').slice(0, -1).join('/');
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self.logger.trace("creating dir " + utils.joinPath(self.buildDir, dir));
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fs.mkdirpSync(utils.joinPath(self.buildDir, dir));
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// if it's a directory
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if (isDir) {
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let targetDir = targetFile;
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if (targetDir.slice(-1) !== '/') {
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targetDir = targetDir + '/';
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}
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async.each(contentFiles, function (file, eachCb) {
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let filename = file.filename.replace(file.basedir + '/', '');
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self.logger.info("writing file " + (utils.joinPath(self.buildDir, targetDir, filename)).bold.dim);
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fs.copy(file.path, utils.joinPath(self.buildDir, targetDir, filename), {overwrite: true}, eachCb);
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}, cb);
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return;
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}
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let content = contentFiles.map(function (file) {
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if (file === undefined) {
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return "";
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}
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return file.content;
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}).join("\n");
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if(new RegExp(/^index.html?/i).test(targetFile)){
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targetFile = targetFile.replace('index', 'index-temp');
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placeholderPage = targetFile;
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}
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fs.writeFile(utils.joinPath(self.buildDir, targetFile), content, cb);
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}
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);
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},
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next
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);
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},
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function removePlaceholderPage(next){
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let placeholderFile = utils.joinPath(self.buildDir, placeholderPage);
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fs.access(utils.joinPath(self.buildDir, placeholderPage), (err) => {
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if (err) return next(); // index-temp doesn't exist, do nothing
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// rename index-temp.htm/l to index.htm/l, effectively replacing our placeholder page
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// with the contents of the built index.html page
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fs.move(placeholderFile, placeholderFile.replace('index-temp', 'index'), {overwrite: true}, next);
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});
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}
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], callback);
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}
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runPlugins(file, fileContent, fileCb) {
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const self = this;
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if (self.pipelinePlugins.length <= 0) {
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return fileCb(null, {content: fileContent, filename: file.filename, path: file.path, basedir: file.basedir, modified: true});
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}
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async.eachSeries(
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self.pipelinePlugins,
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function(plugin, pluginCB) {
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if (file.options && file.options.skipPipeline) {
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return pluginCB();
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}
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fileContent = plugin.runPipeline({targetFile: file.filename, source: fileContent});
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file.modified = true;
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pluginCB();
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},
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function (err) {
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if (err) {
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self.logger.error(err.message);
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}
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return fileCb(null, {content: fileContent, filename: file.filename, path: file.path, basedir: file.basedir, modified: true});
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}
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);
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}
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buildContracts(cb) {
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const self = this;
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async.waterfall([
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function makeDirectory(next) {
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fs.mkdirp(fs.dappPath(self.buildDir, 'contracts'), (err, _result) => {
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next(err);
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});
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},
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function getContracts(next) {
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self.events.request('contracts:list', (err, contracts) => {
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next(err, contracts);
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});
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},
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function writeContractsJSON(contracts, next) {
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async.each(contracts, (contract, eachCb) => {
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fs.writeJson(fs.dappPath(self.buildDir, 'contracts', contract.className + ".json"), contract, {spaces: 2}, eachCb);
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}, () => { next(); });
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}
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], cb);
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}
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buildWeb3JS(cb) {
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const self = this;
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async.waterfall([
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function makeDirectory(next) {
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fs.mkdirp(fs.dappPath(".embark"), (err, _result) => {
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next(err);
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});
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},
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function getWeb3Code(next) {
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self.events.request('code-generator:web3js', next);
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},
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function writeFile(code, next) {
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fs.writeFile(fs.dappPath(".embark", 'web3_instance.js'), code, next);
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}
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], cb);
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}
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}
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module.exports = Pipeline;
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