bluemix-settings.js

/**
 * Copyright 2014, 2015 IBM Corp.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 **/

var path = require("path");
var when = require("when");

var cfenv = require("cfenv");
var appEnv = cfenv.getAppEnv();

var VCAP_APPLICATION = JSON.parse(process.env.VCAP_APPLICATION);
var VCAP_SERVICES = JSON.parse(process.env.VCAP_SERVICES);

var settings = module.exports = {
    uiPort: process.env.VCAP_APP_PORT || 1880,
    mqttReconnectTime: 15000,
    serialReconnectTime: 15000,
    debugMaxLength: 1000,

    // Add the bluemix-specific nodes in
    nodesDir: path.join(__dirname,"nodes"),

    // Blacklist the non-bluemix friendly nodes
    nodesExcludes:['66-mongodb.js','75-exec.js','35-arduino.js','36-rpi-gpio.js','25-serial.js','28-tail.js','50-file.js','31-tcpin.js','32-udp.js','23-watch.js'],

    // Enable module reinstalls on start-up; this ensures modules installed
    // post-deploy are restored after a restage
    autoInstallModules: true,

    // Move the admin UI
    httpAdminRoot: '/red',

    // Serve up the welcome page
    httpStatic: path.join(__dirname,"public"),

    functionGlobalContext: { },

    storageModule: require("./couchstorage")
}
// You can set adminAuth yourself in this file, but it will look for the
// the following environment variables and automatically enable adminAuth
// if they have been set. That means you don't have to hardcode any
// credentials in this file.
if (process.env.NODE_RED_USERNAME && process.env.NODE_RED_PASSWORD) {
    settings.adminAuth = {
        type: "credentials",
        users: function(username) {
            if (process.env.NODE_RED_USERNAME == username) {
                return when.resolve({username:username,permissions:"*"});
            } else {
                return when.resolve(null);
            }
        },
        authenticate: function(username, password) {
            if (process.env.NODE_RED_USERNAME == username &&
                process.env.NODE_RED_PASSWORD == password) {
                return when.resolve({username:username,permissions:"*"});
            } else {
                return when.resolve(null);
            }
        }
    }
}

settings.couchAppname = VCAP_APPLICATION['application_name'];

// NODE_RED_STORAGE_NAME is automatically set by this applications manifest.
var storageServiceName = process.env.NODE_RED_STORAGE_NAME || new RegExp("^"+settings.couchAppname+".cloudantNoSQLDB");
var couchService = appEnv.getService(storageServiceName);

if (!couchService) {
    console.log("Failed to find Cloudant service");
    if (process.env.NODE_RED_STORAGE_NAME) {
        console.log(" - using NODE_RED_STORAGE_NAME environment variable: "+process.env.NODE_RED_STORAGE_NAME);
    }
    throw new Error("No cloudant service found");
}    
settings.couchUrl = couchService.credentials.url;