Forum Discussion
smp_86112
Cirrostratus
Cirrostratusswitch statement conditions
Is there a way to configure switch to handle different "conditions"? For example, I want to take one action if [HTTP::uri] equals one string, but a different action if it starts_with another? Schematically, something I'm looking to do something like this:
when HTTP_REQUEST {
switch [HTTP::uri] {
equals "/" { [HTTP::redirect] http://www.myapp.com/somewhere_else }
starts_with "/custom" { [HTTP::uri] "/new" }
}
}So I'd like a single switch statement look at a string pattern, but take different actions based on the value of different operators.
hoolioHi SMP,
You can use the -glob flag for wildcard handling with the switch statement. Here are some examples:when HTTP_REQUEST { switch -glob [HTTP::uri] { "/" { Exact match for / HTTP::redirect "https://www.myapp.com/somewhere_else" } "/custom*" { URI starts with /custom HTTP::redirect "http://www.myapp.com/custom" } "*gif" - "*jpg" - "*css" - All these cases use the same action. URI ends with a static file type pool static_http_pool } "/app[0-9]*" { URI starts with /app where is a digit HTTP::redirect "https://www.myapp.com/app" } "/app?" { URI starts with /app? where ? is any single character as /app[0-9]* is before this, ? would be any non-digit character HTTP::redirect "https://www.myapp.com/app2" } default { No prior match so take some default action HTTP::redirect "http://www.myapp.com/default" } } }
The glob style matching is the same as with string match. So you can check the string and switch man pages for details:
http://www.tcl.tk/man/tcl8.4/TclCmd/switch.htm
http://www.tcl.tk/man/tcl8.4/TclCmd/string.htm
Aaron
smp_86112Thanks hoolio, that does the trick. It would be nice if F5 would add examples like these to their switch wiki page.- hoolioThere was an example which used glob style matching on the switch wiki page. I added another example along the lines of the one above.
Aaron - JRahm
Admin
Thanks Aaron. SMP, As you see examples in the forum threads that show command usage, feel free to add them to the wiki entries. - there is also an entire article on various wildcard matches using switch here: http://devcentral.f5.com/Tutorials/TechTips/tabid/63/articleType/ArticleView/articleId/244/Switch-Gone-Wild-Using-Wildcards-with-the-Tcl-switch-command.aspx
