[RIVER-123] ConfigurationFile should support arithmetic operations

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Won't Fix
• Affects Version/s: jtsk_2.1
• Fix Version/s: River_3.0.0
• Component/s: net_jini_config
• Bugtraq ID: 5091973
• Assignee: Unassigned
• Reporter: Ronald Mann
• Created: 27/Jul/07 19:00
• Updated: 05/Dec/15 10:58
• Resolved: 05/Dec/15 10:58

Description

Bugtraq ID 5091973
There have been some requests on the Porter discussion list for ConfigurationFile to support arithmetic operations. A use case for this feature is to facilitate configuring services with a set of consecutive ports open in a firewall.

Below is the use case provided by Van Simmons from Invesco:

"...my particular case was in wanting to use a range of port numbers for my various services so that I could open some holes in a firewall and allow access to the services. In that case, I would like to pass in ${basePortNumber} as variable, have reggie use ${basePortNumber}, outrigger use ${basePortNumber}+1, et al. That way, if I decided to move things around I could do that without revisiting all my config files."

While ${basePortNumber} could not be used directly in an addition expression because it is of type String, it would be possible to do something like Integer.parseInt(${basePortNumber}) + 1.

Issue Links

• relates to: RIVER-325 LookupLocator is missing ways to specify SocketFactory