Gruntからherokuコマンドを実行する

Gruntfile.js

module.exports = function (grunt) {
	'use strict';

	function loadDependencies(deps) {
		if (deps) {
			for (var key in deps) {
				if (key.indexOf("grunt-") == 0) {
					grunt.loadNpmTasks(key);
				}
			}
		}
	}

	grunt.initConfig({
		pkg: grunt.file.readJSON('package.json'),
		restorePgbackups: {
			test: {
				app: "myapp",
				backupId: "b002"
			}
		}
	});

	loadDependencies(grunt.config("pkg").devDependencies);
	grunt.task.loadTasks('tasks');

	grunt.registerTask('default', ['restorePgbackups']);
};

restorePgbackups.js

var TASK_NAME = "restorePgbackups",
	grunt = require("grunt"),
	exec = require("child_process").exec,
	EventEmitter = require("events").EventEmitter,
	emitter = new EventEmitter();

function trimLinefeed(str) {
	var c = str.charAt(str.length - 1);
	while (c == "\r" || c == "\n") {
		str = str.substring(0, str.length - 1);
		c = str.charAt(str.length - 1);
	}
	return str;
}
grunt.registerMultiTask(TASK_NAME, 'Restore pgbackups', function () {
	var config = grunt.config(TASK_NAME)[this.target],
		app = config.app,
		backupApp = config.backupApp || config.app,
		backupId = config.backupId;

	if (!app) {
		grunt.fail.warn("app is not specified.");
	}
	if (!backupId) {
		grunt.fail.warn("app is not specified.");
	}
	var done = this.async();
	emitter.on("url", function(url) {
		var command = "heroku pgbackups:restore DATABASE_URL \"" + trimLinefeed(url) + "\" -a " + app + " --confirm " + app;
		exec(command, function(err, stdout, stderr) {
			if (err) {
				grunt.fail.warn(err);
			}
			grunt.log.writeln(stdout);
			done();
		});
	});
	exec("heroku pgbackups:url " + backupId + " -a " + backupApp, function(err, stdout, stderr) {
		if (err) {
			grunt.fail.warn(err);
		}
		emitter.emit("url", stdout);
	});
});