containr/lib/templating.js

Docker Build scripts for npm

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _assign = require('babel-runtime/core-js/object/assign');

var _assign2 = _interopRequireDefault(_assign);

var _fs = require('fs');

var _fs2 = _interopRequireDefault(_fs);

var _path = require('path');

var _path2 = _interopRequireDefault(_path);

var _ejs = require('ejs');

var _ejs2 = _interopRequireDefault(_ejs);

var _tmp = require('tmp');

var _tmp2 = _interopRequireDefault(_tmp);

var _layer = require('./layer');

var _logger = require('./logger');

var _logger2 = _interopRequireDefault(_logger);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

_tmp2.default.setGracefulCleanup();

const getTemplate = templateName => {
  const templateSearchPaths = [process.cwd(), _path2.default.join(process.cwd(), 'share'), __dirname, _path2.default.join(__dirname, 'share'), _path2.default.join(__dirname, '..', 'share')];

  let templatePath = null;

  for (const templateDir of templateSearchPaths) {
    templatePath = _path2.default.join(templateDir, templateName);
    if (_fs2.default.existsSync(templatePath)) {
      break;
    }
  }

  try {
    return _fs2.default.readFileSync(templatePath).toString('utf-8');
  } catch (error) {
    console.error(` * error: no such file or read error: ${error.message}`);
    return false;
  }
};

const renderContent = (templateContent, vars = {}, options = {}) => {
  _logger2.default.debug('renderContent', templateContent, vars);
  try {
    let res = _ejs2.default.render(templateContent, vars, options);
    _logger2.default.debug(res);
    return res;
  } catch (renderError) {
    console.error(`Rendering error: ${renderError.message}`);
    return '';
  }
};

const writeTempFile = content => {
  const tmpDir = process.cwd();
  const tf = _tmp2.default.fileSync({
    mode: '0644',
    dir: tmpDir,
    prefix: '.tmp-containr-',
    postfix: ''
  });
  _fs2.default.writeFileSync(tf.fd, content);
  return tf.name;
};

const renderTemplate = (templateContent, templateVars = {}) => {

  const { pkg, labels } = templateVars;

  const layer = (0, _assign2.default)({
    npm: baseLayer => (0, _layer.getNpmLayer)(baseLayer, pkg)
  }, templateVars.layer || {});

  const containr = (0, _assign2.default)({
    imageName: pkg.imageName
  }, templateVars.containr || {});

  const dockerFileContent = renderContent(templateContent, {
    pkg,
    labels,
    layer,
    containr
  }, {
    // debug: true,
  });

  // console.log(dockerFileContent);
  const dockerFilePath = writeTempFile(dockerFileContent);
  return dockerFilePath;
};

const renderFile = (fileName, vars = {}) => {
  const templateContent = getTemplate(fileName);
  return renderTemplate(templateContent, vars);
};

const getExtension = (filename = '') => {
  if (filename.indexOf('.') === -1) {
    return '';
  }
  return filename.split('.').pop();
};

const isEjs = (filename = '') => getExtension(filename) === 'ejs';

exports.default = {
  renderFile,
  writeTempFile,
  getExtension,
  isEjs
};
//# sourceMappingURL=templating.js.map