Java – you can programmatically access the current heroku dyno ID / name?

On heroku, can you get some identifier of dyno currently executing code from the program through the program? For example, dyno name (such as "web. 1" or "worker. 1") or other ID

If so, what do you do in Java?

Solution

There is always the host name of the machine (looks like d.long_guid), I think (although I didn't try) this should work:

String localhostname = java. net. InetAddress. getLocalHost(). getHostName();

In addition, there is a famous secret, but you can get the "web. 1" and "web. 2" IDS by looking at the value of the environment variable PS1

String hostId = System. getenv(“PS1”)

EDIT 2013-July-26

According to Heroku changelog, the local environment variable dyno now replaces PS, which replaces PS1