perfsonar development work

[Tsompanidis Ilias <>]

Loukik Kudarimoti wrote:
> Hi guys,
>
> I just spent quite a while trying to debug a problem where in I was 
> unable to get responses from SQL MA. Turns out, its all because of new 
> line characters in xml tag contents which were introduced either in 
> the store or in the request message.
>
> When any part of the service implementation is trying to compare two 
> strings - one hardcoded within the implementation (such as eventType 
> value) and the second one coming from the xml message (via the Message 
> bean), even if the strings are similar except for new-line characters, 
> the checks fail. This definitely needs to be taken care of.
>
> Initially I thought that we could take care of this at the Message 
> bean level (by stripping empty strings around a text). But I am not 
> 100% sure of the outcome. I am not sure because for some strings, 
> white spaces *between the text* are important (command line mp for 
> example). Jason, what do you think? I found out the String.trim() 
> method will remove leading and trailing white spaces but not sure 
> about white lines?
>
> Any thoughts anybody? This bug can cause problems because the 
> configurations at least are created by the users and its difficult to 
> get them to remove such white spaces and new lines. It affects SQL MA 
> for sure and maybe RRD MA (Ilias?)
RRDMA is affected too. The easiest way to see it is to test the Echo 
functionality :
"http://schemas.perfsonar.net/tools/admin/echo/2.0   "
instead of the working event_type
"http://schemas.perfsonar.net/tools/admin/echo/2.0"; .

One way to come around it would be using regular expression match, 
instead of .equals(). In perl it would be something like:
$string =~ m/something_interesting/

I know that java has a reg exp engine of equal strength to perl's. Maybe 
it could come in handy.

Ilias

> Loukik.
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