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MojoX-JSONRPC2-HTTP-v2.0.3
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/ MojoX::JSONRPC2::HTTP

NAME

MojoX::JSONRPC2::HTTP - Client for JSON RPC 2.0 over HTTP

VERSION

This document describes MojoX::JSONRPC2::HTTP version v2.0.3

SYNOPSIS

use MojoX::JSONRPC2::HTTP;

$client = MojoX::JSONRPC2::HTTP->new;

# setup
$client
    ->url('http://example.com/endpoint')
    ->method('GET')
    ->type('application/json-rpc')
    ->headers({'X-Answer'=>42,…})
    ;
# get Mojo::UserAgent to setup it (timeouts, etc.)
$ua = $client->ua;

# blocking notifications and calls
($failed, $result, $error) = $client->call('method', @params);
($failed, $result, $error) = $client->call_named('method', %params);
$failed = $client->notify('method', @params);
$failed = $client->notify_named('method', %params);

# non-blocking calls
$client->call('method', @params, \&cb);
$client->call_named('method', %params, \&cb);
sub cb {
    my ($failed, $result, $error) = @_;
}

# non-blocking notifications
$client->notify('method', @params, \&cb_failed);
$client->notify_named('method', %params, \&cb_failed);
sub cb_failed {
    my ($failed) = @_;
}

DESCRIPTION

Provide HTTP transport for JSON RPC 2.0 using Mojo::UserAgent.

Implements this spec: http://www.simple-is-better.org/json-rpc/transport_http.html. The "pipelined Requests/Responses" is not supported yet.

ATTRIBUTES

All these methods return current value when called without params or set new value and return their object (to allow method chaining) when called with single param.

url

RPC endpoint url.

This is only required parameter which must be set before doing RPC calls.

method

Default is 'POST', and only another supported value is 'GET'.

type

Default is 'application/json'.

headers

Default is empty HASHREF. Either modify it by reference or set it to your own HASHREF with any extra headers you need to send with RPC call.

ua

Mojo::UserAgent object used for sending HTTP requests - feel free to setup it or replace with your own object.

METHODS

new

$client = MojoX::JSONRPC2::HTTP->new( %attrs );
$client = MojoX::JSONRPC2::HTTP->new( \%attrs );

You can set attributes listed above by providing their values when calling new() or later using individual attribute methods.

call

call_named

($failed, $result, $error) = $client->call( 'method', @params );
($failed, $result, $error) = $client->call_named( 'method', %params );
$client->call( 'method', @params, \&cb );
$client->call_named( 'method', %params, \&cb );

Do blocking or non-blocking (when \&cb param provided) RPC calls, with either positional or named params. Blocking calls will return these values (non-blocking will call \&cb with same values as params):

($failed, $result, $error)

In case of transport-level errors, when we fail to either send RPC request or receive correct reply from RPC server the $failed will contain error message, while $result and $error will be undefined.

In case remote 'method' or RPC server itself will return error it will be available in $error as HASHREF with keys {code}, {message} and optionally {data}, while $failed and $result will be undefined.

Otherwise value returned by remote 'method' will be in $result, while $failed and $error will be undefined.

notify

notify_named

$failed = $client->notify( 'method', @params );
$failed = $client->notify_named( 'method', %params );
$client->notify( 'method', @params, \&cb );
$client->notify_named( 'method', %params, \&cb );

Do blocking or non-blocking (when \&cb param provided) RPC calls, with either positional or named params. Blocking calls will return this value (non-blocking will call \&cb with same value as param):

$failed

It will contain error message in case of transport-level error or will be undefined if RPC call was executes successfully.

SEE ALSO

JSON::RPC2::Client, Mojolicious, Mojolicious::Plugin::JSONRPC2.

LIMITATIONS

Batch/Multicall feature

Not supported because it is not implemented by JSON::RPC2::Client.

SUPPORT

Bugs / Feature Requests

Please report any bugs or feature requests through the issue tracker at https://github.com/powerman/perl-MojoX-JSONRPC2-HTTP/issues. You will be notified automatically of any progress on your issue.

Source Code

This is open source software. The code repository is available for public review and contribution under the terms of the license. Feel free to fork the repository and submit pull requests.

https://github.com/powerman/perl-MojoX-JSONRPC2-HTTP

git clone https://github.com/powerman/perl-MojoX-JSONRPC2-HTTP.git

Resources

AUTHOR

Alex Efros <powerman@cpan.org>

COPYRIGHT AND LICENSE

This software is Copyright (c) 2014- by Alex Efros <powerman@cpan.org>.

This is free software, licensed under:

The MIT (X11) License