@sap/dwf-generator/generator/generate_folders.js

SAP HANA Data Warehousing Foundation - Generator

'use strict';

/**
 * check whether the default folders src and cfg already exists,
 * if not, create new folders
 */

const coFs = require('fs');
const coPath = require('path');
const coCommon = require('./generate/common');
const csRootNamespace = require('./const').rootNamespace;
const coLogMsg = require('./const').logMsg;

function lfnCheckDefaultFolders(isPath, isDefaultFolders) {
  lfnCheckFolder(coPath.join(isPath, isDefaultFolders.src));
  lfnCheckFolder(coPath.join(isPath, isDefaultFolders.cfg));
  lfnCheckDefaultFile({
    path: coPath.join(isPath, isDefaultFolders.src),
    fileName: '.hdiconfig',
    template: 'hdiconfig'
  });
  lfnCheckDefaultFile({
    path: coPath.join(isPath, isDefaultFolders.cfg),
    fileName: '.hdiconfig',
    template: 'hdiconfig'
  });
  lfnCheckDefaultFile({
    path: coPath.join(isPath, isDefaultFolders.src),
    fileName: '.hdinamespace',
    template: 'namespace',
    value: {
      namespace: csRootNamespace,
      subfolder: 'append'
    }
  });
  lfnCheckDefaultFile({
    path: coPath.join(isPath, isDefaultFolders.src),
    fileName: `${coLogMsg.logContext}.hdbcds`,
    template: 'logTable',
    value: {
      namespace: csRootNamespace,
      logTableName: coLogMsg.logTable,
      context: coLogMsg.logContext
    }
  });
  lfnCheckDefaultFile({
    path: coPath.join( isPath, isDefaultFolders.src ),
    fileName: 'TABLE_TYPE_LOG.hdbtabletype',
    template: 'msgTable',
    value: {
      namespace: csRootNamespace,
      tableTypeName: coLogMsg.tableType,
      context: coLogMsg.logContext
    }
  });
}

function lfnCheckFolder(isPath, ibNotOverwrite) {
  // check parent folder
  let lsParentPath = coPath.join(isPath, '..');
  try {
    coFs.accessSync(lsParentPath, coFs.F_OK);
  } catch (ioErr) {
    lfnCheckFolder(lsParentPath);
  }
  // check current folder
  try {
    coFs.mkdirSync(isPath); // create a folder
  } catch (ioErr) {
    if (ibNotOverwrite && ioErr.code == 'EEXIST') {
      console.warn(ioErr);
      return true;
    }
    if (ioErr.code != 'EEXIST') {
      console.error(ioErr);
    }
  }
}

function lfnCheckDefaultFile(ioObject) {
  let lsFullPath = coPath.join(ioObject.path, ioObject.fileName);
  try {
    coFs.accessSync(lsFullPath, coFs.F_OK);
  } catch (ioErr) {
    // file doesn't exist
    let lsHdiconfigContent = coCommon.replace(ioObject.template, ioObject.value);
    try {
      coFs.writeFileSync(lsFullPath, lsHdiconfigContent);
    } catch (ioErr) {
      console.error(`Fail to create "${lsFullPath}"`);
      process.exit(1);
    }
  }
}

module.exports = {
  checkDefaultFolders: lfnCheckDefaultFolders,
  checkFolder: lfnCheckFolder
};