Check a website and raise an alert if the site contains a search string

[Marcus Mülbüsch]

Hello list,

    I check a website (XML-content) and if I find the string that says 
type="alarm" I want to raise an alert.

    However, if I see it right monit will send an alarm only if a 
http-connection fails, either because the server is not responding, or 
the content is not there.

   So given the following config:

> check host somehost with address 11.22.33.44
>         if failed
>                 request "/some/uri/file.xml"
>                 use http headers [Authorization: Basic something]
>                 with content = 'type="alarm"'
>         then alert

    I will get no alarm when the server responds with:

> <alarms>
>         <fault type="alarm" some_more_data>
>                 <text>Error</text>
>                 <source>source</source>
>         </fault>
> </alarms>

    but I will get an alarm if the server simply responds with:

> <alarms/>

    However, I want it to be the other way around.

    How can I achieve that?

Marcus Mülbüsch