Detecting environment with Meteor.js?

问题

Anybody figure out syntax or a pattern yet for detecting hosting environment using Meteor.js? I've got Heroku buildpacks working, and have a dev/production environment, but I'm kind of drawing a blank on how to have my app detect which environment it's running in.

Is there a way to have node.js detect which port it's running on? I was hoping there might be something low-level like app.address().port, but that doesn't seem to work...

Edit: This is the solution that worked for me. Note that the following needs to be run on the server, so it needs to be included in server\server.js, or a similar file.

if (Meteor.is_server) {
    Meteor.startup(function () {
        // we want to be able to inspect the root_url, so we know which environment we're in
        console.log(JSON.stringify(process.env.ROOT_URL));

        // in case we want to inspect other process environment variables
        //console.log(JSON.stringify(process.env));
    });
}

Also created the following:

Meteor.methods({
  getEnvironment: function(){
    if(process.env.ROOT_URL == "http://localhost:3000"){
        return "development";
    }else{
        return "staging";
    }
  }
 });

Which allows for the following on client side:

 Meteor.call("getEnvironment", function (result) {
      console.log("Your application is running in the " + result + "environment.");
 });

Thanks Rahul!

回答1:

You can inspect the process.env variable on the server to find information about the current environment, including the port:

{ TERM_PROGRAM: 'Apple_Terminal',
  TERM: 'xterm-256color',
  SHELL: '/bin/bash',
  TMPDIR: '/var/folders/y_/212wz0cx5vs20yd7y2psnh7m0000gp/T/',
  Apple_PubSub_Socket_Render: '/tmp/launch-hch25f/Render',
  TERM_PROGRAM_VERSION: '309',
  OLDPWD: '/usr/local/meteor/bin',
  TERM_SESSION_ID: '3FE307A0-B8FC-41AD-B1EB-FCFA0B8B25D1',
  USER: 'Rahul',
  COMMAND_MODE: 'unix2003',
  SSH_AUTH_SOCK: '/tmp/launch-gFCBXS/Listeners',
  __CF_USER_TEXT_ENCODING: '0x1F6:0:0',
  Apple_Ubiquity_Message: '/tmp/launch-QAWKHL/Apple_Ubiquity_Message',
  PATH: '/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin',
  PWD: '/Users/Rahul/Documents/Sites/test',
  NODE_PATH: '/usr/local/meteor/lib/node_modules',
  SHLVL: '1',
  HOME: '/Users/Rahul',
  LOGNAME: 'Rahul',
  LC_CTYPE: 'UTF-8',
  SECURITYSESSIONID: '186a4',
  PORT: '3001',
  MONGO_URL: 'mongodb://127.0.0.1:3002/meteor',
  ROOT_URL: 'http://localhost:3000' }

回答2:

there is a direct Meteor function:

Meteor.isDevelopment

see: https://docs.meteor.com/api/core.html#Meteor-isDevelopment

and for production:

Meteor.isProduction

both return a boolean

回答3:

I used a variation of the above with the NODE_ENV variable. See here for more info:

http://meteorpedia.com/read/Environment_Variables#Checking%20the%20value%20of%20an%20Environment%20Variable

if Meteor.isServer
  Meteor.methods
    'getEnvironment': -> process.env.NODE_ENV

Meteor.call 'getEnvironment', (err, result) ->
  if result == 'development'
    console.log('In dev env')

来源：https://stackoverflow.com/questions/14184643/detecting-environment-with-meteor-js

标签

environment-variables

meteor