The London Perl and Raku Workshop takes place on 26th Oct 2024. If your company depends on Perl, please consider sponsoring and/or attending.


Perinci::Access - Wrapper for Perinci Riap clients


This document describes version 0.45 of Perinci::Access (from Perl distribution Perinci-Access), released on 2017-07-10.


 use Perinci::Access;

 my $pa = Perinci::Access->new;
 my $res;

 ### launching Riap request

 # use Perinci::Access::Perl
 $res = $pa->request(call => "pl:/Mod/SubMod/func");

 # use Perinci::Access::Schemeless
 $res = $pa->request(call => "/Mod/SubMod/func");

 # use Perinci::Access::HTTP::Client
 $res = $pa->request(info => "",

 # use Perinci::Access::Simple::Client
 $res = $pa->request(meta => "riap+tcp://localhost:7001/Sub/ModSub/");

 # dies, unknown scheme
 $res = $pa->request(call => "baz://");

 ### parse URI

 $res = $pa->parse_url("/Foo/bar");                              # {proto=>'pl', path=>"/Foo/bar"}
 $res = $pa->parse_url("pl:/Foo/bar");                           # ditto
 $res = $pa->parse_url("riap+unix:/var/run/apid.sock//Foo/bar"); # {proto=>'riap+unix', path=>"/Foo/bar", unix_sock_path=>"/var/run/apid.sock"}
 $res = $pa->parse_url("riap+tcp://localhost:7001/Sub/ModSub/"); # {proto=>'riap+tcp', path=>"/Sub/ModSub/", host=>"localhost", port=>7001}
 $res = $pa->parse_url("");             # {proto=>'http', path=>"/App/cpanlists/Server/"} # will perform an 'info' Riap request to the server first


This module provides a convenient wrapper to select appropriate Riap client (Perinci::Access::*) objects based on URI scheme.

 /Foo/Bar/             -> Perinci::Access::Schemeless
 pl:/Foo/Bar           -> Perinci::Access::Perl
 riap://perl/Foo/Bar/  -> Perinci::Access::Perl (converted to pl:/Foo/Bar/)
 http://...            -> Perinci::Access::HTTP::Client
 https://...           -> Perinci::Access::HTTP::Client
 riap+tcp://...        -> Perinci::Access::Simple::Client
 riap+unix://...       -> Perinci::Access::Simple::Client
 riap+pipe://...       -> Perinci::Access::Simple::Client

For more details on each scheme, please consult the appropriate module.

You can customize or add supported schemes by providing class name or object to the handlers attribute (see its documentation for more details).


$Log_Request (BOOL)

Whether to log every Riap request. Default is from environment variable LOG_RIAP_REQUEST, or false. Logging is done with Log::ger at trace level.

$Log_Response (BOOL)

Whether to log every Riap response. Default is from environment variable LOG_RIAP_RESPONSE, or false. Logging is done with Log::ger at trace level.


new(%opts) -> OBJ

Create new instance. Known options:

  • handlers => HASH

    A mapping of scheme names and class names or objects. If values are class names, they will be require'd and instantiated. The default is:

       ''           => 'Perinci::Access::Schemeless',
       pl           => 'Perinci::Access::Perl',
       http         => 'Perinci::Access::HTTP::Client',
       https        => 'Perinci::Access::HTTP::Client',
       'riap+tcp'   => 'Perinci::Access::Simple::Client',
       'riap+unix'  => 'Perinci::Access::Simple::Client',
       'riap+pipe'  => 'Perinci::Access::Simple::Client',

    Objects can be given instead of class names. This is used if you need to pass special options when instantiating the class.

  • handler_args => HASH

    Arguments to pass to handler objects' constructors.

$pa->request($action, $server_url[, \%extra_keys[, \%client_opts]]) -> RESP

Send Riap request to Riap server. Pass the request to the appropriate Riap client (as configured in handlers constructor options). RESP is the enveloped result.

%extra_keys is optional, containing Riap request keys (the action request key is taken from $action).

%client_opts is optional, containing Riap-client-specific options. For example, to pass HTTP credentials to Perinci::Access::HTTP::Client, you can do:

 $pa->request(call => '', {args=>{a=>1}},
              {user=>'admin', password=>'secret'});

$pa->parse_url($server_url[, \%client_opts]) => HASH

Parse $server_url into its components. Will be done by respective subclasses. Die on failure (e.g. invalid URL). Return a hash on success, containing at least these keys:

  • proto => STR

  • path => STR

    Code entity path. Most URL schemes include the code entity path as part of the URL, e.g. pl, riap+unix, riap+tcp, or riap+pipe. Some do not, e.g. http and https. For the latter case, an info Riap request will be sent to the server first to find out the code entity path .

Subclasses will add other appropriate keys.





Please visit the project's homepage at


Source repository is at


Please report any bugs or feature requests on the bugtracker website

When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature.







perlancar <>


This software is copyright (c) 2017, 2015, 2014, 2013, 2012 by

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.