Forum Discussion
Daniel_Cheng_18
Nimbostratus
NimbostratusCan't convert iRule by OTCU
We found the following iRule can't convert When we upgrade our BIGIP from v4.x to v9.x by OTCU.
if (http_uri matches_regex "/opscommon") {
log "*** client_addr: " + client_addr + ", uri: " + http_uri
redirect to "http://" + http_host + "/opsfop/" + substr(http_uri, 10, 1000)
}
else {
use pool OPS-PM
}
}
We are no experience on iRule, Any body can tech me how to convert this iRule to v9 ?
Many Thx.
Daniel
4 Replies
hoolioCirrostratus
I think this should be functionally equivalent:if { [HTTP::uri] starts_with "/opscommon"}{ log local0. "client: [IP::client_addr], URI: [HTTP::uri]" HTTP::redirect "http://[HTTP::host]/opsfop/[HTTP::uri]" } else { pool OPS-PM }
I replaced the regex you had with a string comparison, as it doesn't look like you need to use a regex to verify the URI doesn't start with /opscommon (and a regex is less efficient than a string comparison). You can use matches_regex if you need to though.
Aaron
Daniel_Cheng_18How About the "substr(http_uri, 10, 1000)" ??
Do we need to apply this string in V9 and how?
Many Thx.
Daniel- hoolioSorry about dropping that. You're trimming off the /opscommon/ from the requested URI using substring. To do that in 9.x you could replace /opscommon with /opsfop/ using 'string map', or use substr.
Here's an example, using string map:if { [HTTP::uri] starts_with "/opscommon/"}{ log local0. "client: [IP::client_addr], original URI: [HTTP::uri], redirect URI: [string map {/opscommon/ /opsfop/} [HTTP::uri]]" HTTP::redirect "http://[HTTP::host][string map {/opscommon/ /opsfop/} [HTTP::uri]]" } else { pool OPS-PM }
[edited to fix misplaced }]
Aaron - Daniel_Cheng_18Thank you for help to convert our iRule to v9 format. Actually , I want to learn more about iRue.
Could you please show me some example to talking about what does this iRule doing for??
Base on my clumsy program knowledge, this iRule is search the URI if match "/opscommon" then will take a log with client IP URL ETC......
then where will the traffic redirect to???
Thx for help,
Daniel
