Forum Discussion
Uber_Nathan_202
Nimbostratus
NimbostratusiApp variable scope
Hi all,
I'm writing my first iApp to automate deployment of a few virtual servers, nodes, pools and iRule data-groups
I have finished the presentation section and am now starting on the implement...
Scope is not the problem. Tcl treats anything inside curly braces as verbatim. Enclosed strings in quotes and escape each curly brace with a backslash.
tmsh_modify "ltm data-group internal /Common/snat-map records add { $::private__privateAddr { data $::public__publicAddr }}"
jojo83_271212Nimbostratus
NimbostratusHi Fred! I've a similar questions:
I'm modifying an iApp in order to create an irule to assign to the vs.
the assignment is here { [iapp_conf create ltm virtual ${app}_vs \ destination [iapp_destination $::pool__addr $::pool__port] \ mask $mask \ $vs_params \ ip-protocol tcp \ mirror $mirror_action \ profiles replace-all-with { $tcp_profiles http } \ rules { iwf_test_irulebal iwf_$irulelog }] }
the irule are very simple
the first irule is with no variables
tmsh::create ltm rule iwf_$irulelog {
when HTTP_REQUEST {
log local0. "No variables"
}
`
}
the second irule need to balance on the pool created with the iapp, so i need to write it with variable statement and not with string
`iapp_conf create ltm rule iwf_test_irulebal {
when HTTP_REQUEST {
if { [HTTP::uri] starts_with "/portal${app}_pool" } {
use pool ${app}_pool }
else {
TCP::close
}
}
}
i've tried with \before the { but seems not works. also with ::global variable but not works.
In a classic BIG-IP environment without iapp the use of variable in irule works. how can i use the variable in an irule created with an iapp?
I typically use string map.
set app "xyz"
set irule [string map " $app" {
when HTTP_REQUEST {
if { [HTTP::uri] starts_with "/portal_pool" } {
use pool _pool }
else {
TCP::close
}
}
}]
iapp::conf create ltm rule iwf_test_irulebal $irule