I'd like to do this in Java Google App Engine
if(developmentMode) foo(); else bar(); Does anyone know a good way to do this?
Daniel
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3 Answers
https://cloud.google.com/appengine/docs/java/javadoc/com/google/appengine/api/utils/SystemProperty
In Java just test
SystemProperty.environment.value() == SystemProperty.Environment.Value.Production 
1 Comment
Brian White
Minor note: The question asks how to check if we're on a development system but the test above checks if we're on a production system (i.e. the condition is negated). Change to
!= or use SystemProperty.Environment.Value.Development.In Python, check the SERVER_SOFTWARE environment variable. It'll be "Development/X.Y" in development mode. In Java, ServletContext.getServerInfo().
Comments
Take a look at this thread on the GAE/J Group.
Several techniques are listed there. You might also look at this blog entry
It suggests doing: ServletContext.getServerInfo()
"In development this will be 'Google App Engine Development/x.x.x' and in production it will be 'Google App Engine/x.x.x'"
This blog suggests writing a ServletContextListener to sniff this value so you can expose it to classes that don't have access to the ServletContext.
