[Swift-devel] Re: URIs in mappers

[Ben Clifford]

I put the below into bugzilla as bug 92.

On Tue, 18 Sep 2007, Ben Clifford wrote:

> 
> I was looking at mappers using URIs in r1227, which I've never tried 
> before.
> 
> I was expecting something like the following program to work (to produce a 
> copy of the file mapped to the f variable into $PWD/here).
> 
> =================================
> type file;
> 
> (file o) cat(file i) {
>     app {
>         cat stdin=@i stdout=@o;
>     }
> }
> 
> file f <"gsiftp://terminable.ci.uchicago.edu/etc/group">;
> 
> file out <"here">;
> 
> out = cat(f);
> =================================
> 
> When I say 
> 
> file f <"/etc/group">;
> 
> or
> 
> file f <"file:///etc/group">;
> 
> I get files OK.
> 
> However, other uses are less successful:
> 
> file://localhost/etc/group dies like this:
> 
> =================================
> Swift v0.2-dev r1227 (modified locally)
> 
> RunID: 20070918-1214-7dls8y23
> cat started
> cat failed
> Execution failed:
>         Exception in cat:
> Arguments: []
> Host: localhost
> Directory: ftptest-20070918-1214-7dls8y23/cat-62kxdehi
> stderr.txt: 
> 
> stdout.txt: 
> 
> ----
> 
> Caused by:
>         File not found: 
> /Users/benc/work/cog/modules/vdsk/localhost/etc/group
> =================================
> 
> with http:
> 
> file f <"http://www.hawaga.org.uk/ben/index.html">;
> 
> gives similar error ending:
>         File not found: /Users/benc/work/cog/modules/vdsk/ben/index.html
> 
> 
> and with gsiftp:
> 
> file f <"gsiftp://terminable.ci.uchicago.edu/etc/group">;
> 
> gives similar error ending:        
> 
>         File not found: /Users/benc/work/cog/modules/vdsk/etc/group
> 
> (I can get that http URL with wget, and the gsiftp one with g-u-c)
> 
> In the gsiftp case, I see that a subdirectory:
> 
> /var/tmp/ftptest-20070918-1217-gxh621s5/shared/etc
> 
> has been created in the run directory, but no group file has appeared 
> there.
> 
>