[augeas-devel] Cannot save httpd.conf file after edit

[David Lutterkort]

On Tue, 2010-03-02 at 23:24 -0500, Brandon Whalen wrote:
> I am attempting to parse an httpd.conf file using augeas. I found the
> httpd.aug and httpd.conf files associated with ticket #100. I
> downloaded the latest git tree, built, and installed it. I then
> downloaded the httpd.aug and the example httpd.conf files and
> attempted to load the file in augtool. Initially augtool was unable to
> parse the file at all. I found that httpd.aug had an error when it got
> to the comments inside the IfModule declarations. In order to fix this
> I applied the patch in [1]. After that the httpd.conf file was loaded
> and I was able to see the sections fine.

Nice catch. I hope you're keeping track of the changes you are making.
When you get the lens to work, it would be nice if you posted it here.

Also, you might want to have a look at the entries about lens
development on the Wiki[1] - in particular, you might want to use
augparse and the unit testing support built into Augeas to make the lens
more solid, rather than use augtool.

For examples on how that works, look into lenses/tests/ in a git
checkout. For example, to run the tests for the hosts lens (in
lenses/hosts.aug) you'd run

        cd GIT_CHECKOUT_OF_AUGEAS
        augparse -I lenses lenses/tests/test_hosts.aug

>  The problem I am currently having is that after I have loaded the
> file, made a change, and then tried to save that change it fails as
> shown in [2]. As I somewhat suspected when I place some debugging
> output in it seems to be failing during the comment sections. I'd
> really like to have this working and am hoping someone can point out
> some error I've done with my edit to the .aug file, or with how I am
> trying to use augtool. If this is a bug, I'd be glad to file something
> in trac and attach any files that might help with the debugging.

What you are doing seems fine. You an get more details about the error
by typing 'print /augeas//error' at the augtool prompt after the error
happened (with the double slashes).

If you post the output of the print here (or ping me on IRC), I can help
you pinpoint what's going wrong.

David

[1] http://augeas.net/page/Main_Page