CODEWITHSUNDEEP
java
Biscuit128
Biscuit128

Reputation: 5408

Java - How to detect the environment

I am trying to solve an issue where by I have to .p12 files that correspond to production and development. I am looking for a way for java to know whether it is running in prod or dev so that I can choose the appropriate p12 to use.

Currently I am using the following logic

private static final String PATH_TO_P12_DEV =  "/JavaPNSDEV.p12";
private static final String PATH_TO_P12_PROD =  "/JavaPNSPROD.p12";
private InputStream keystoreInputStream = null;
private final Logger logger = Logger.getLogger(ApplePushNotificationSystem.class);
private PushManager<SimpleApnsPushNotification> pushManager = null;

private void connect() throws NoSuchAlgorithmException, CertificateException, IOException, UnrecoverableKeyException, KeyManagementException, KeyStoreException {

    try {
        if(InetAddress.getLocalHost().getHostName().toLowerCase().equals("hostname")){
            keystoreInputStream = this.getClass().getResourceAsStream(PATH_TO_P12_PROD);
        }else{
            keystoreInputStream = this.getClass().getResourceAsStream(PATH_TO_P12_DEV);
        }

However this worries me because as soon as the hostname changes / someone changes the hostname this will fail.

What is the correct approach for solving as issue like this?

Thanks

Upvotes: 2

Views: 7009

Answers (3)

Jens Schauder
Jens Schauder

Reputation: 82008

The details depend on the kind of infrastructure you run on. Assuming you run in some kind of Webapplication server it should be possible to set an Environment variable to an identificating String. If you have only this single configuration element (which .p12 file to use) you can just put in an if condition:

if ("PROD".equals(System.getenv("STAGE"))){
    // use on file
} else {
    // use a different file
}

Most of the time you have multiple configuration elements. In that case I would put all that information in property files. One per stage. Then you use the stage environment variable to determine which file to use.

Upvotes: 1

nogard
nogard

Reputation: 9716

Correct approach would be passing some configuration option to the application, by configuration file or just environment variable. Then you can easily distinguish between different environments.

As trivial example: you can run production application with -DConfig=PRO, and development with -DConfig=DEV. Then you can distinguish them by checking System.getProperty("Config")

Upvotes: 3

Remcoder
Remcoder

Reputation: 212

I would make use of a configuration file. This way you can have 1 file pointing to your development environment and 1 file pointing to your production environment.

Perhaps you can look into apache commons config for this?

Upvotes: 1

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