Config::MVP::Assembler::WithBundles - a role to make assemblers expand bundles
version 2.200013
Config::MVP::Assembler::WithBundles is a role to be composed into a
Config::MVP::Assembler subclass. It allows some sections of configuration to
be treated as bundles. When any section is ended, if that section represented
a bundle, its bundle contents will be unrolled and will replace it in the
sequence.
A package is considered a bundle if "package_bundle_method" returns a
defined value (which is the name of a method that will be called on that
package to retrieve its bundle config).
my $method = $assembler->package_bundle_method($package);
The default implementation looks for a method called
"mvp_bundle_config", but "package_bundle_method" can be
replaced with one that returns the name of a different bundle-identifying
method-name.
Bundles are expanded by a call to the assembler's
"replace_bundle_with_contents" method, like this:
$assembler->replace_bundle_with_contents($section, $method);
The default "replace_bundle_with_contents" method deletes the section
from the sequence. It then gets a description of the new sections to
introduce, like this:
my @new_config = $bundle_section->package->$method({
name => $bundle_section->name,
package => $bundle_section->package,
payload => $bundle_section->payload,
});
(We pass a hashref rather than a section so that bundles can be expanded
synthetically without having to laboriously create a new Section.)
The returned @new_config is a list of arrayrefs, each of which has three
entries:
[ $name, $package, $payload ]
Each arrayref is converted into a section in the sequence. The $payload should
be an arrayref of name/value pairs to be added to the created section.
This module should work on any version of perl still receiving updates from the
Perl 5 Porters. This means it should work on any version of perl released in
the last two to three years. (That is, if the most recently released version
is v5.40, then this module should work on both v5.40 and v5.38.)
Although it may work on older versions of perl, no guarantee is made that the
minimum required version will not be increased. The version may be increased
for any reason, and there is no promise that patches will be accepted to lower
the minimum required perl.
Ricardo Signes <
[email protected]>
This software is copyright (c) 2022 by Ricardo Signes.
This is free software; you can redistribute it and/or modify it under the same
terms as the Perl 5 programming language system itself.