spider - crawling headless browser client

config/index.js

@@ -0,0 +1,65 @@
+const commandLineArgs = require('command-line-args')  
+  , logger = require("logops");
+
+class Config {
+
+  constructor() {
+    this.options = {}
+    this.requires = ['env', 'gateway', 'quix24']
+    this.init()
+    this.validate()
+    this.finalize()
+  }
+
+  init() {
+    try {
+      this.options = commandLineArgs([
+        { name: 'env', alias: 'e', type: String, defaultValue: ['production'] },
+        { name: 'host', type: String },
+        { name: 'port', type: Number },
+        { name: 'database', alias: 'd', type: String },
+        { name: 'username', alias: 'u', type: String },
+        { name: 'password', alias: 'p', type: String },
+        { name: 'mongo', alias: 'm', type: String },
+        { name: 'redis', alias: 'r', type: String },
+        { name: 'level', alias: 'l', type: String },
+        { name: 'gateway', alias: 'g', type: String },
+        { name: 'quix24', alias: 'q', type: String }
+      ]);      
+    } catch (e) {
+      logger.debug('Command line arguments interpret failed :', e.message)
+      logger.debug('expected arguments : ', JSON.stringify(this.requires))
+      process.exit(1)
+    }
+  }
+
+  finalize() {
+    if (this.options.env == 'development') {
+      this.options.level = this.options.level ? this.options.level : "DEBUG"
+      logger.format = logger.formatters.dev;
+    } else {
+      this.options.level = this.options.level ? this.options.level : "WARN"
+    }
+    logger.setLevel(this.options.level)
+    logger.info('Environment setting options', this.options)
+  }
+
+  validate() {
+    for (let key in this.options) {
+      if (this.options[key]) {
+        delete this.requires[this.requires.indexOf(key)]
+      }
+    }
+    this.requires = this.requires.filter(function (el) {
+      return el != null;
+    })
+    if (this.requires.length) {
+      logger.debug('Process terminated invalid required arguments: ', JSON.stringify(requires))
+      process.exit(1)
+    }
+  }
+
+}
+
+let config = new Config;
+module.exports = config.options