NAME Config::Structured - Provides generalized and structured configuration value access VERSION version 2.000 SYNOPSIS use Config::Structured; my $conf = Config::Structured->new( structure => { ... }, config => { ... } ); say $conf->some->nested->value(); DESCRIPTION L provides a structured method of accessing configuration values This is predicated on the use of a configuration C (required), This structure provides a hierarchical structure of configuration branches and leaves. Each branch becomes a L method which returns a new L instance rooted at that node, while each leaf becomes a method which returns the configuration value. The configuration value is normally provided in the C hash. However, a C node for a non-Hash value can be a hash containing the "source" and "ref" keys. This permits sourcing the config value from a file (when source="file") whose filesystem location is given in the "ref" value, or an environment variable (when source="env") whose name is given in the "ref" value. I are required to include an "isa" key, whose value is a type (see L). If typechecking is not required, use isa => 'Any'. There are a few other keys that L respects in a leaf node: =over =item C This key's value is the default configuration value if a data source or value is not provided by the configuation. =item C =item C A human-readable description and implementation notes, respectively, of the configuration node. L does not do anything with these values at present, but they provides inline documentation of configuration directivess within the structure (particularly useful in the common case where the structure is read from a file) =back METHODS get($name?) Class method. Returns a registered Config::Structured instance. If $name is not provided, returns the default instance. Instances can be registered with __register_default or __register_as. This mechanism is used to provide global access to a configuration, even from code contexts that otherwise cannot share data. __register_default() Call on a Config::Structured instance to set the instance as the default. __register_as($name) Call on a Config::Structured instance to register the instance as the provided name. AUTHOR Mark Tyrrell COPYRIGHT AND LICENSE This software is copyright (c) 2019 by Concert Pharmaceuticals, Inc.. This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.