embark-area-51/lib/core/config.js

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var fs = require('./fs.js');
var File = require('./file.js');
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var Plugins = require('./plugins.js');
var utils = require('../utils/utils.js');
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var path = require('path');
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var Config = function(options) {
this.env = options.env;
this.blockchainConfig = {};
this.contractsConfig = {};
this.pipelineConfig = {};
this.webServerConfig = {};
this.chainTracker = {};
this.assetFiles = {};
this.contractsFiles = [];
this.configDir = options.configDir || 'config/';
this.chainsFile = options.chainsFile || './chains.json';
this.plugins = options.plugins;
this.logger = options.logger;
this.events = options.events;
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this.embarkConfig = {};
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};
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Config.prototype.loadConfigFiles = function(options) {
var interceptLogs = options.interceptLogs;
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if (options.interceptLogs === undefined) {
interceptLogs = true;
}
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if (!fs.existsSync(options.embarkConfig)){
this.logger.error('Cannot find file ' + options.embarkConfig + '. Please ensure you are running this command inside the Dapp folder');
process.exit(1);
}
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this.embarkConfig = fs.readJSONSync(options.embarkConfig);
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this.embarkConfig.plugins = this.embarkConfig.plugins || {};
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this.plugins = new Plugins({plugins: this.embarkConfig.plugins, logger: this.logger, interceptLogs: interceptLogs, events: this.events, config: this});
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this.plugins.loadPlugins();
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this.loadEmbarkConfigFile();
this.loadBlockchainConfigFile();
this.loadStorageConfigFile();
this.loadCommunicationConfigFile();
this.loadContractsConfigFile();
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this.loadPipelineConfigFile();
this.loadContractsConfigFile();
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this.loadWebServerConfigFile();
this.loadChainTrackerFile();
this.loadPluginContractFiles();
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};
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Config.prototype.reloadConfig = function() {
this.loadEmbarkConfigFile();
this.loadBlockchainConfigFile();
this.loadStorageConfigFile();
this.loadCommunicationConfigFile();
this.loadContractsConfigFile();
this.loadPipelineConfigFile();
this.loadContractsConfigFile();
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this.loadChainTrackerFile();
};
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Config.prototype._mergeConfig = function(configFilePath, defaultConfig, env, enabledByDefault) {
if (!configFilePath) {
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let configToReturn = defaultConfig['default'] || {};
configToReturn.enabled = enabledByDefault || false;
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return configToReturn;
}
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if (!fs.existsSync(configFilePath)) {
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// TODO: remove this if
if (this.logger) {
this.logger.warn("no config file found at " + configFilePath + ". using default config");
}
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return defaultConfig['default'] || {};
}
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let config = fs.readJSONSync(configFilePath);
let configObject = utils.recursiveMerge(defaultConfig, config);
if (env) {
return utils.recursiveMerge(configObject['default'] || {}, configObject[env]);
} else {
return configObject;
}
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};
Config.prototype._getFileOrOject = function(object, filePath, property) {
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if (typeof (this.configDir) === 'object') {
return this.configDir[property];
}
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return this.configDir + filePath;
};
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Config.prototype.loadBlockchainConfigFile = function() {
var configObject = {
"default": {
"enabled": true
}
};
let configFilePath = this._getFileOrOject(this.configDir, 'blockchain.json', 'blockchain');
this.blockchainConfig = this._mergeConfig(configFilePath, configObject, this.env, true);
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};
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Config.prototype.loadContractsConfigFile = function() {
var defaultVersions = {
"web3.js": "1.0.0-beta",
"solc": "0.4.17"
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};
var versions = utils.recursiveMerge(defaultVersions, this.embarkConfig.versions || {});
var configObject = {
"default": {
"versions": versions,
"deployment": {
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"host": "localhost", "port": 8545, "type": "rpc"
},
"dappConnection": [
"$WEB3",
"localhost:8545"
],
"gas": "auto",
"contracts": {
}
}
};
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var contractsConfigs = this.plugins.getPluginsProperty('contractsConfig', 'contractsConfigs');
contractsConfigs.forEach(function(pluginConfig) {
configObject = utils.recursiveMerge(configObject, pluginConfig);
});
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let configFilePath = this._getFileOrOject(this.configDir, 'contracts.json', 'contracts');
this.contractsConfig = this._mergeConfig(configFilePath, configObject, this.env);
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};
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Config.prototype.loadStorageConfigFile = function() {
var versions = utils.recursiveMerge({"ipfs-api": "17.2.4"}, this.embarkConfig.versions || {});
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var configObject = {
"default": {
"versions": versions,
"enabled": true,
"available_providers": ["ipfs"],
"ipfs_bin": "ipfs",
"provider": "ipfs",
"host": "localhost",
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"port": 5001,
"getUrl": "http://localhost:8080/ipfs/"
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}
};
let configFilePath = this._getFileOrOject(this.configDir, 'storage.json', 'storage');
this.storageConfig = this._mergeConfig(configFilePath, configObject, this.env);
};
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Config.prototype.loadCommunicationConfigFile = function() {
var configObject = {
"default": {
"enabled": true,
"provider": "whisper",
"available_providers": ["whisper", "orbit"],
"connection": {
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"host": "localhost", "port": 8546, "type": "ws"
}
}
};
let configFilePath = this._getFileOrOject(this.configDir, 'communication.json', 'communication');
this.communicationConfig = this._mergeConfig(configFilePath, configObject, this.env);
};
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Config.prototype.loadWebServerConfigFile = function() {
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var configObject = {
"enabled": true, "host": "localhost", "port": 8000
};
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let configFilePath = this._getFileOrOject(this.configDir, 'webserver.json', 'webserver');
this.webServerConfig = this._mergeConfig(configFilePath, configObject, false);
};
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Config.prototype.loadEmbarkConfigFile = function() {
var contracts = this.embarkConfig.contracts;
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this.contractsFiles = this.loadFiles(contracts);
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// determine contract 'root' directories
this.contractDirectories = contracts.map((dir) => {
return dir.split("**")[0];
}).map((dir) => {
return dir.split("*.")[0];
});
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this.buildDir = this.embarkConfig.buildDir;
this.configDir = this.embarkConfig.config;
};
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Config.prototype.loadPipelineConfigFile = function() {
var assets = this.embarkConfig.app;
for(var targetFile in assets) {
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this.assetFiles[targetFile] = this.loadFiles(assets[targetFile]);
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}
};
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Config.prototype.loadChainTrackerFile = function() {
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if (!fs.existsSync(this.chainsFile)) {
this.logger.info(this.chainsFile + ' file not found, creating it...');
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fs.writeJSONSync(this.chainsFile, {});
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}
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this.chainTracker = fs.readJSONSync(this.chainsFile);
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};
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function findMatchingExpression(filename, filesExpressions) {
for (let fileExpression of filesExpressions) {
var matchingFiles = utils.filesMatchingPattern(fileExpression);
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for (let matchFile of matchingFiles) {
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if (matchFile === filename) {
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return path.dirname(fileExpression).replace(/\*/g, '');
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}
}
}
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return path.dirname(filename);
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}
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Config.prototype.loadFiles = function(files) {
var self = this;
var originalFiles = utils.filesMatchingPattern(files);
var readFiles = [];
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originalFiles.filter(function(file) {
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return (file[0] === '$' || file.indexOf('.') >= 0);
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}).filter(function(file) {
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let basedir = findMatchingExpression(file, files);
readFiles.push(new File({filename: file, type: "dapp_file", basedir: basedir, path: file}));
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});
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var filesFromPlugins = [];
var filePlugins = self.plugins.getPluginsFor('pipelineFiles');
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filePlugins.forEach(function(plugin) {
try {
var fileObjects = plugin.runFilePipeline();
for (var i=0; i < fileObjects.length; i++) {
var fileObject = fileObjects[i];
filesFromPlugins.push(fileObject);
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}
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}
catch(err) {
self.logger.error(err.message);
}
});
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filesFromPlugins.filter(function(file) {
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if (utils.fileMatchesPattern(files, file.intendedPath)) {
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readFiles.push(file);
}
});
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return readFiles;
};
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Config.prototype.loadPluginContractFiles = function() {
var self = this;
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var contractsPlugins = this.plugins.getPluginsFor('contractFiles');
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contractsPlugins.forEach(function(plugin) {
plugin.contractsFiles.forEach(function(file) {
var filename = file.replace('./','');
self.contractsFiles.push(new File({filename: filename, type: 'custom', resolver: function(callback) {
callback(plugin.loadPluginFile(file));
}}));
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});
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});
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};
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module.exports = Config;