briareus/lib/cli/index.js

Briareus assists with Feature Branch deploys to ECS

'use strict'

const fs = require('fs');
const bunyan = require('bunyan');
const _ = require('lodash');
const s = require('underscore.string');
const taskDefinitionValidator = require('../taskDefinitionValidator');
const Client = require('../client');

class CLI {
  constructor(args, output) {
    this.paths = {
      briareus: {}
    };

    this.args = args;

    this.params = _
      .chain(this.args)
      .mapKeys((value, key) => s.camelize(key))
      .omit([
        '',
        '_',
        '$0',
        'authtoken',
        'projectRootPath',
        'logLevel'
      ])
      .mapValues((param) => param + "") // force all params to be strings
      .value()

    this.output = output;
    this.log = bunyan.createLogger({
      name: 'Briareus CLI',
      level: this.args['log-level'],
      streams: [
        { stream: output }
      ]
    });

    this.paths.root = args.projectRootPath;
    this.paths.briareus.dir = `${this.paths.root}/.briareus`;
    this.paths.briareus.config = `${this.paths.briareus.dir}/config.json`;
    this.paths.briareus.taskDefinition = `${this.paths.briareus.dir}/task-definition.json`;

    this.config = this.getProjectConfigRaw(this.paths.briareus.config);

    let endpoint = this.params.endpoint ? this.params.endpoint : this.config.briareus;
    this.api = new Client({ endpoint, authtoken: args.authtoken, logger: this.log });
  }

  getProjectConfigRaw() {
    if (!fs.existsSync(this.paths.briareus.config)) {
      throw new Error(`config.json file not found in .briareus directory`);
    }

    try { var config = JSON.parse(fs.readFileSync(this.paths.briareus.config)); }
    catch (e) {
      throw new Error(`Error parsing json at ${this.paths.briareus.config}. ${e.message}`);
    }

    return config;
  }

  getProjectTaskDefinition() {
    if (!fs.existsSync(this.paths.briareus.taskDefinition)) {
      throw new Error(`task-definition.json file not found in .briareus directory`);
    }

    try { var taskDefinition = JSON.parse(fs.readFileSync(this.paths.briareus.taskDefinition, 'utf8')); }
    catch (e) {
      throw new Error(`Error parsing json at ${this.paths.briareus.taskDefinition}. ${e.message}`);
    }

    let result = taskDefinitionValidator(taskDefinition);
    if (result) throw result;

    return taskDefinition;
  }

  packageBriareusConfig() {
    let config = this.getProjectConfigRaw();
    config.taskDefinition = this.getProjectTaskDefinition();

    return config;
  }
}

module.exports = CLI;