serverless/lib/defaults/actions/ModuleCreate.js
2015-10-21 15:49:30 -05:00

358 lines
11 KiB
JavaScript

'use strict';
/**
* Action: ModuleCreate
*/
const JawsPlugin = require('../../JawsPlugin'),
JawsError = require('../../jaws-error'),
JawsCLI = require('../../utils/cli'),
fs = require('fs'),
path = require('path'),
os = require('os'),
BbPromise = require('bluebird'),
AWSUtils = require('../../utils/aws'),
JawsUtils = require('../../utils');
let fs = require('fs');
BbPromise.promisifyAll(fs);
const supportedRuntimes = {
nodejs: {
defaultPkgMgr: 'npm',
validPkgMgrs: ['npm']
}
};
/**
* ModuleCreate Class
*/
class ModuleCreate extends JawsPlugin {
/**
* @param Jaws class object
* @param config object
*/
constructor(Jaws, config) {
super(Jaws, config);
this._templatesDir = path.join(__dirname, '..', '..', 'templates');
this._resource = "";
this._action = "";
this._pkgMgr = false;
this._createLambda = false;
this._createEndpoint = false;
this._runtime = 'nodejs';
}
/**
* Define your plugins name
*
* @returns {string}
*/
static getName() {
return 'jaws.core.' + ModuleCreate.name;
}
/**
* @returns {Promise} upon completion of all registrations
*/
registerActions() {
this.Jaws.action(this.createModule.bind(this), {
handler: 'moduleCreate',
description: `Creates scaffolding for new aws module.
usage: jaws module create <module resource> <action>`,
context: 'module',
contextAction: 'create',
options: [
{
option: 'runtime',
shortcut: 'r',
description: ''
},
{
option: 'lambda',
shortcut: 'l',
description: ''
},
{
option: 'endpoint',
shortcut: 'e',
description: ''
},
{
option: 'package-manager',
shortcut: 'p',
description: ''
},
],
});
return Promise.resolve();
}
/**
*
* @param runtime
* @param createLambda
* @param createEndpoint
* @param pkgMgr
* @param resourceAction <array> resource action
* @returns {Promise}
*/
createModule(runtime, createLambda, createEndpoint, pkgMgr) {
let _this = this,
resourceAction = Array.prototype.slice.call(arguments, 5);
if (!resourceAction || resourceAction.length !== 2) {
return Promise.reject(new JawsError('Must specify a resource and action'));
}
if (!createLambda && !createEndpoint) { //default is to create both
createEndpoint = true;
createLambda = true;
}
this._resource = resourceAction[0];
this._action = resourceAction[1];
this._createEndpoint = createEndpoint;
this._createLambda = createLambda;
this._runtime = runtime || 'nodejs';
if (!supportedRuntimes[this._runtime]) {
throw new JawsError('Unsupported runtime ' + _this._runtime, JawsError.errorCodes.UNKNOWN);
}
this._pkgMgr = pkgMgr || supportedRuntimes[this._runtime].defaultPkgMgr;
if (supportedRuntimes[this._runtime].validPkgMgrs.indexOf(this._pkgMgr) == -1) {
throw new JawsError('Unsupported package manger "' + this._pkgMgr + '"', JawsError.errorCodes.UNKNOWN);
}
return this._JAWS.validateProject()
.bind(_this)
.then(_this._sanitizeData)
.then(_this._createSkeleton)
.then(_this._createPackageMgrSkeleton)
.then(_this._initRuntime)
.then(function() {
JawsCLI.log('Successfully created '
+ _this._resourcee
+ '/'
+ _this._action);
});
}
_sanitizeData() {
this._action = this._action.toLowerCase().trim()
.replace(/\s/g, '-')
.replace(/[^a-zA-Z-\d:]/g, '')
.substring(0, 19);
this._resource = this._resource.toLowerCase().trim()
.replace(/\s/g, '-')
.replace(/[^a-zA-Z-\d:]/g, '')
.substring(0, 19);
}
_generateActionAwsmJson() {
let actionTemplateJson = utils.readAndParseJsonSync(path.join(_this._templatesDir, 'action.awsm.json'));
//We prefix with an l to make sure the CloudFormation resource map index is unique
actionTemplateJson.name = 'l' + this._resource.charAt(0).toUpperCase() + this._resource.slice(1) + this.action.charAt(0).toUpperCase() + this.action.slice(1);
if (this._createLambda) {
actionTemplateJson.cloudFormation.Lambda.Runtime = this._runtime;
// Create files for lambda actions
switch (this._runtime) {
case 'nodejs':
actionTemplateJson.cloudFormation.Lambda.Handler = path.join('aws_modules', this._resource, this._action, 'handler.handler');
break;
default:
throw new JawsError('This runtime is not supported "' + this._runtime + '"', JawsError.errorCodes.UNKNOWN);
break;
}
} else {
delete actionTemplateJson.lambda;
}
if (this._createEndpoint) {
actionTemplateJson.cloudFormation.APIGatewayEndpoint.Path = this._resource + '/' + this._action;
} else {
delete actionTemplateJson.cloudFormation.APIGatewayEndpoint;
}
//TODO: how do we support LambdaEventSourceMapping and LambdaAccessPolicyX
delete actionTemplateJson.cloudFormation.LambdaEventSourceMapping;
delete actionTemplateJson.cloudFormation.LambdaAccessPolicyX;
return actionTemplateJson;
}
_generateModuleAwsmJson() {
let moduleTemplateJson = utils.readAndParseJsonSync(path.join(this._templatesDir, 'module.awsm.json'));
moduleTemplateJson.name = this._resource;
return moduleTemplateJson;
};
/**
*
* @returns {Promise}
* @private
*/
_createPackageMgrSkeleton() {
let _this = this,
deferredWrites = [];
switch (_this.runtime) {
case 'nodejs':
if (_this.pkgMgr == 'npm') {
let modulePath = path.join(_this._JAWS._projectRootPath, 'node_modules', _this._resource);
// Create node_module if DNE in node_modules
if (!utils.dirExistsSync(modulePath)) {
deferredWrites.push(fs.mkdirAsync(modulePath));
}
// Create module package.json if DNE in node_module
if (!utils.fileExistsSync(path.join(modulePath, 'package.json'))) {
let packageJsonTemplate = utils.readAndParseJsonSync(path.join(_this._templatesDir, 'nodejs', 'package.json'));
packageJsonTemplate.name = _this._resource;
packageJsonTemplate.description = 'An aws-module';
packageJsonTemplate.dependencies = {};
deferredWrites.push(
fs.writeFileAsync(
path.join(modulePath, 'package.json'),
JSON.stringify(packageJsonTemplate, null, 2)
)
);
}
// Create module awsm.json if DNE in node_module
if (!utils.fileExistsSync(path.join(modulePath, 'awsm.json'))) {
let moduleTemplateJson = _this._generateModuleAwsmJson();
deferredWrites.push(
utils.writeFile(
path.join(modulePath, 'awsm.json'),
JSON.stringify(moduleTemplateJson, null, 2)));
}
// Create root lib folder if DNE in node_module
let modLibPath = path.join(modulePath, 'lib');
if (!utils.dirExistsSync(modLibPath)) {
deferredWrites.push(fs.mkdirAsync(modLibPath));
}
// Create awsm folder if DNE in node_module
if (!utils.dirExistsSync(path.join(modulePath, 'awsm'))) {
deferredWrites.push(fs.mkdirAsync(path.join(modulePath, 'awsm')));
}
// Create action if DNE in node_module
let actionPath = path.join(modulePath, 'awsm', _this.action);
if (!utils.dirExistsSync(actionPath)) {
let actionTemplateJson = this._generateActionAwsmJson(),
handlerJs = fs.readFileSync(path.join(_this._templatesDir, 'nodejs', 'handler.js')),
indexJs = fs.readFileSync(path.join(_this._templatesDir, 'nodejs', 'index.js'));
deferredWrites.push(
utils.writeFile(
path.join(actionPath, 'awsm.json'),
JSON.stringify(actionTemplateJson, null, 2)
),
utils.writeFile(path.join(actionPath, 'handler.js'), handlerJs),
utils.writeFile(path.join(actionPath, 'index.js'), indexJs),
utils.writeFile(path.join(actionPath, 'event.json'), '{}')
);
}
}
break;
default:
break;
}
return Promise.all(deferredWrites);
}
/**
*
* @returns {Promise}
* @private
*/
_createSkeleton() {
let _this = this,
writeFilesDeferred = [];
let modulePath = path.join(_this._JAWS._projectRootPath, 'aws_modules', _this._resource),
actionPath = path.join(modulePath, _this.action);
// If module/action already exists, throw error
if (utils.dirExistsSync(actionPath)) {
throw new JawsError(
actionPath + ' already exists',
JawsError.errorCodes.INVALID_PROJECT_JAWS
);
}
//module path will get created by util.writeFile if DNE
// If module awsm.json doesn't exist, create it
if (!utils.fileExistsSync(path.join(modulePath, 'awsm.json'))) {
let moduleTemplateJson = _this._generateModuleAwsmJson();
writeFilesDeferred.push(
utils.writeFile(
path.join(modulePath, 'awsm.json'),
JSON.stringify(moduleTemplateJson, null, 2)
)
);
}
// Create action folder
writeFilesDeferred.push(actionPath);
// Create action awsm.json
let actionTemplateJson = _this._generateActionAwsmJson();
let handlerJs = fs.readFileSync(path.join(this._templatesDir, 'nodejs', 'handler.js')),
indexJs = fs.readFileSync(path.join(this._templatesDir, 'nodejs', 'index.js'));
writeFilesDeferred.push(
utils.writeFile(path.join(actionPath, 'handler.js'), handlerJs),
utils.writeFile(path.join(actionPath, 'index.js'), indexJs),
utils.writeFile(path.join(actionPath, 'event.json'), '{}'),
utils.writeFile(path.join(actionPath, 'awsm.json'), JSON.stringify(actionTemplateJson, null, 2))
);
return Promise.all(writeFilesDeferred);
}
/**
*
* @returns {Promise}
* @private
*/
_initRuntime() {
let _this = this;
JawsCLI.log('Preparing your runtime..');
if (_this._runtime === 'nodejs') {
let packageJsonTemplate = JawsUtils.readAndParseJsonSync(path.join(_this._templatesDir, 'nodejs', 'package.json'));
packageJsonTemplate.name = _this.Jaws._projectJson.name;
return fs.writeFileAsync(path.join(_this.Jaws, _projectRootPath, 'package.json'), JSON.stringify(packageJsonTemplate, null, 2))
.then(function() {
JawsCLI.log('Installing jaws-core module...');
JawsUtils.npmInstall(_this._projectRootPath);
});
}
}
}
module.exports = ModuleCreate;