Config::JFDI(3) User Contributed Perl Documentation Config::JFDI(3)NAMEConfig::JFDI - Just * Do it: A Catalyst::Plugin::ConfigLoader-style
layer over Config::Any
VERSION
version 0.065
DESCRIPTIONConfig::JFDI is an implementation of Catalyst::Plugin::ConfigLoader
that exists outside of Catalyst.
Essentially, Config::JFDI will scan a directory for files matching a
certain name. If such a file is found which also matches an extension
that Config::Any can read, then the configuration from that file will
be loaded.
Config::JFDI will also look for special files that end with a "_local"
suffix. Files with this special suffix will take precedence over any
other existing configuration file, if any. The precedence takes place
by merging the local configuration with the "standard" configuration
via Hash::Merge::Simple.
Finally, you can override/modify the path search from outside your
application, by setting the <NAME>_CONFIG variable outside your
application (where <NAME> is the uppercase version of what you passed
to Config::JFDI->new).
SYNPOSIS
use Config::JFDI;
my $config = Config::JFDI->new(name => "my_application", path => "path/to/my/application");
my $config_hash = $config->get;
This will look for something like (depending on what Config::Any will
find):
path/to/my/application/my_application_local.{yml,yaml,cnf,conf,jsn,json,...} AND
path/to/my/application/my_application.{yml,yaml,cnf,conf,jsn,json,...}
... and load the found configuration information appropiately, with
_local taking precedence.
You can also specify a file directly:
my $config = Config::JFDI->new(file => "/path/to/my/application/my_application.cnf");
To later reload your configuration, fresh from disk:
$config->reload;
Config::Loader
We are currently kicking around ideas for a next-generation
configuration loader. The goals are:
* A universal platform for configuration slurping and post-processing
* Use Config::Any to do configuration loading
* A sane API so that developers can roll their own loader according to the needs of their application
* A friendly interface so that users can have it just DWIM
* Host/application/instance specific configuration via _local and %ENV
Find more information and contribute at:
Roadmap: <http://sites.google.com/site/configloader/>
Mailing list:
http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/config-loader
<http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/config-loader>
Behavior change of the 'file' parameter in 0.06
In previous versions, Config::JFDI would treat the file parameter as a
path parameter, stripping off the extension (ignoring it) and globbing
what remained against all the extensions that Config::Any could
provide. That is, it would do this:
Config::JFDI->new( file => 'xyzzy.cnf' );
# Transform 'xyzzy.cnf' into 'xyzzy.pl', 'xyzzy.yaml', 'xyzzy_local.pl', ... (depending on what Config::Any could parse)
This is probably not what people intended. Config::JFDI will now squeak
a warning if you pass 'file' through, but you can suppress the warning
with 'no_06_warning' or 'quiet_deprecation'
Config::JFDI->new( file => 'xyzzy.cnf', no_06_warning => 1 );
Config::JFDI->new( file => 'xyzzy.cnf', quiet_deprecation => 1 ); # More general
If you *do* want the original behavior, simply pass in the file
parameter as the path parameter instead:
Config::JFDI->new( path => 'xyzzy.cnf' ); # Will work as before
METHODS
$config = Config::JFDI->new(...)
You can configure the $config object by passing the following to new:
name The name specifying the prefix of the configuration file to look for and
the ENV variable to read. This can be a package name. In any case,
:: will be substituted with _ in <name> and the result will be lowercased.
To prevent modification of <name>, pass it in as a scalar reference.
path The directory to search in
file Directly read the configuration from this file. Config::Any must recognize
the extension. Setting this will override path
no_local Disable lookup of a local configuration. The 'local_suffix' option will be ignored. Off by default
local_suffix The suffix to match when looking for a local configuration. "local" By default
("config_local_suffix" will also work so as to be drop-in compatible with C::P::CL)
no_env Set this to 1 to disregard anything in the ENV. The 'env_lookup' option will be ignored. Off by default
env_lookup Additional ENV to check if $ENV{<NAME>...} is not found
driver A hash consisting of Config:: driver information. This is passed directly through
to Config::Any
install_accessor Set this to 1 to install a Catalyst-style accessor as <name>::config
You can also specify the package name directly by setting install_accessor to it
(e.g. install_accessor => "My::Application")
substitute A hash consisting of subroutines called during the substitution phase of configuration
preparation. ("substitutions" will also work so as to be drop-in compatible with C::P::CL)
A substitution subroutine has the following signature: ($config, [ $argument1, $argument2, ... ])
path_to The path to dir to use for the __path_to(...)__ substitution. If nothing is given, then the 'home'
config value will be used ($config->get->{home}). Failing that, the current directory will be used.
default A hash filled with default keys/values
Returns a new Config::JFDI object
$config_hash = Config::JFDI->open( ... )
As an alternative way to load a config, ->open will pass given
arguments to ->new( ... ), then attempt to do ->load
Unlike ->get or ->load, if no configuration files are found, ->open
will return undef (or the empty list)
This is so you can do something like:
my $config_hash = Config::JFDI->open( "/path/to/application.cnf" ) or croak "Couldn't find config file!"
In scalar context, ->open will return the config hash, NOT the config
object. If you want the config object, call ->open in list context:
my ($config_hash, $config) = Config::JFDI->open( ... )
You can pass any arguments to ->open that you would to ->new
$config->get
$config->config
$config->load
Load a config as specified by ->new( ... ) and ENV and return a hash
These will only load the configuration once, so it's safe to call them
multiple times without incurring any loading-time penalty
$config->found
Returns a list of files found
If the list is empty, then no files were loaded/read
$config->clone
Return a clone of the configuration hash using Clone
This will load the configuration first, if it hasn't already
$config->reload
Reload the configuration, examining ENV and scanning the path anew
Returns a hash of the configuration
$config->substitute( <value>, <value>, ... )
For each given <value>, if <value> looks like a substitution
specification, then run the substitution macro on <value> and store the
result.
There are three default substitutions (the same as
Catalyst::Plugin::ConfigLoader)
· "__HOME__" - replaced with "$c->path_to('')"
· "__path_to(foo/bar)__" - replaced with "$c->path_to('foo/bar')"
· "__literal(__FOO__)__" - leaves __FOO__ alone (allows you to use
"__DATA__" as a config value, for example)
The parameter list is split on comma (",").
You can define your own substitutions by supplying the substitute
option to ->new
SEE ALSO
Catalyst::Plugin::ConfigLoader
Config::Any
Catalyst
Config::Merge
Config::General
AUTHOR
Robert Krimen <robertkrimen@gmail.com>
COPYRIGHT AND LICENSE
This software is copyright (c) 2011 by Robert Krimen.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
perl v5.14.1 2011-01-01 Config::JFDI(3)
