[rudder-users] order of application

[Michael Gliwinski]

On Monday 03 Sep 2012 10:16:04 Nicolas Charles wrote:
> On 03/09/2012 10:06, Michael Gliwinski wrote:
> > A quick question.  Is there a way to affect the order in which
> > directives are applied?  Or the order in generated bundlesequence?

> So far, there is no way to affect the order of application of
> directives. However, it is something we'd like to implement in Rudder.
> We are wondering how it should (could?) be defined in the WebUI, and are
> open to suggestions !

I guess the most useful thing would be to have it as part of rule management 
to allow re-ordering individual directives (e.g. a list with up/down buttons, 
drag & drop, etc.), however AFAICS this may not be so easy to do.

AFAICS you can already affect ordering of directives within a given type with 
the 'Priority' property (e.g. to affect which 'Enforce a file content' directive 
is applied first).  Is that correct?

I'm not actually sure if it would be useful to expose global ordering of 
directive types (i.e. bundlesequence), possibly a better default would work OK 
here.

> > The specific issue I'm having now is that I have an RPM package
> > installation directive and a checkGenericFileContent directive for
> > updating a configuration file installed by the package.  The problem is
> > that checkGenericFileContent is before rpmPackageInstallation in the
> > bundlesequence, so on first installation the config file is created by
> > CFe before the package is installed, which causes RPM to install the
> > config file as an .rpmnew file.

E.g. for this case, changing bundlesequence to do package installation before 
manageFilesAndFolders and check_generic_file_content would work fine, the 
downside is it introduces a problem when checkGenericFileContent is used to 
modify configuration of the package manager itself.

Do you think this is a rather common case?


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