iApp to modify data-group

hello,

im trying to add a set of key and value from iApp to a data-group belonged to iRule. my iApp template:

section x { table y_table { string key string value } }

text { x "section x" x.y_table.key "Input1: " x.y_table.value "Input2: " }

also, i have an tmsh command which works through command line: tmsh modify ltm data-group internal my_datagroup records add {"key" {data "value"}}

now what im trying to do is to make the input from the iapp to modify the data-group

any help appriciated.

thanks ahead.

Fred_Slater_856
Aug 12, 2014
I led you astray. The following is corrected, and works if your data-group already exists. If it doesn't exist yet, use tmsh::create. It appears that the exec is not necessary.

foreach row $::x__y_table { array set columns [join $row] tmsh::modify ltm data-group internal /Common/my_datagroup records add \{ $columns(key) \{ data $columns(value) \}\} }

Fred_Slater_856
Historic F5 Account
Aug 11, 2014
Datagroups are shared resources which cannot be "owned" by an iApp, but you can fool the iApp into configuring datagroups by forking a shell. Put this in your iApp implementation:
exec tmsh modify ltm data-group internal /Common/my_datagroup records add { $::x__y_table__key { data $::x__y_table__value }}
Eldad_162351
Nimbostratus
Aug 12, 2014
Hey,

thanks for the answer Fred, but trying to run this causes a script run error with: Syntax Error: records: required brace is missing "{"

not sure what im doing wrong...

thanks. E.
Fred_Slater_856
Historic F5 Account
Aug 12, 2014
You may need to escape the braces.
... records add \{ $::x__y_table__key \{ data $::x__y_table__value \}\}
Eldad_162351
Nimbostratus
Aug 12, 2014
looks like im doing something wrong...

now im getting the error:

::x__y_table__key no such variable

i tried to set a new variables for the key and value before the exec and call them from the exec but still same error.

thanks for all your support, really appriciated since im new to the F5 dev...
Fred_Slater_856
Historic F5 Account
Aug 12, 2014
I led you astray. The following is corrected, and works if your data-group already exists. If it doesn't exist yet, use tmsh::create. It appears that the exec is not necessary.

foreach row $::x__y_table { array set columns [join $row] tmsh::modify ltm data-group internal /Common/my_datagroup records add \{ $columns(key) \{ data $columns(value) \}\} }
- Fred_Slater_856
  Historic F5 Account
  Aug 12, 2014
  (Wiki formatting did not show it, but the "array set" and "tmsh::modify" commands must be on separate lines.)
- Ryan77777
  Altocumulus
  May 02, 2018
  When you delete the iApp, how does the entry get removed from the datagroup? Is there a way to program that into iApp as part of the decomm process?
- Fred_Slater_856
  Historic F5 Account
  May 03, 2018
  Is doesn't get removed, and no, unfortunately the iApp framework has no hooks for decomm code.
Eldad_162351
Nimbostratus
Aug 13, 2014
It Works!!!

thanks so much!

E.
- Fred_Slater_856
  Historic F5 Account
  Aug 13, 2014
  Great! Happy to help.