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package POE::Component::Server::JSONRPC; |
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use strict; |
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use warnings; |
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use base qw/Class::Accessor::Fast/; |
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our $VERSION = '0.05'; |
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use POE qw/ |
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Filter::Line |
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/; |
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55185
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use JSON; |
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=head1 NAME |
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POE::Component::Server::JSONRPC - POE tcp or http based JSON-RPC server |
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=head1 SYNOPSIS |
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#http version: |
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POE::Component::Server::JSONRPC::Http->new( |
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Port => 3000, |
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Handler => { |
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'echo' => 'echo', |
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'sum' => 'sum', |
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}, |
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SslKey => '/path/to/the/server.key', |
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SslCert => '/path/to/the/server.crt', |
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Authenticate => \&authentication_handler, |
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# authentication_handler must be a function that takes two parameters login and password, |
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# and returns true if connection is successful, false otherwise |
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); |
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#tcp version: |
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POE::Component::Server::JSONRPC::Tcp->new( |
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Port => 3000, |
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Handler => { |
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'echo' => 'echo', |
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'sum' => 'sum', |
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}, |
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); |
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sub echo { |
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my ($kernel, $jsonrpc, $id, @params) = @_[KERNEL, ARG0..$#_ ]; |
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$kernel->post( $jsonrpc => 'result' => $id, @params ); |
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} |
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sub sum { |
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my ($kernel, $jsonrpc, $id, @params) = @_[KERNEL, ARG0..$#_ ]; |
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51
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$kernel->post( $jsonrpc => 'result' => $id, $params[0] + $params[1] ); |
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} |
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54
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=head1 DESCRIPTION |
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This module is a POE component for tcp or http based JSON-RPC Server. |
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58
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The specification is defined on http://json-rpc.org/ and this module use JSON-RPC 1.0 spec (1.1 does not cover tcp streams) |
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60
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=head1 METHODS |
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=head2 new |
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Create JSONRPC component session and return the session id. |
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Parameters: |
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=over |
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70
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=item Port |
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72
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Port number for listen. |
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74
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=item Handler |
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76
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Hash variable contains handler name as key, handler poe state name as value. |
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78
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Handler name (key) is used as JSON-RPC method name. |
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80
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So if you send {"method":"echo"}, this module call the poe state named "echo". |
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82
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=back |
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84
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=cut |
85
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86
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sub new { |
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0
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my $self = shift->SUPER::new( @_ > 1 ? {@_} : $_[0] ); |
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89
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$self->{parent} = $poe_kernel->get_active_session->ID; |
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$self->{json} ||= JSON->new; |
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92
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my $session = POE::Session->create( |
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object_states => [ |
94
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$self => { |
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0
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map { ( $_ => "poe_$_", ) } |
96
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qw/_start init_server input_handler result error send/ |
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}, |
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], |
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); |
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101
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$session->ID; |
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} |
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104
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=head1 HANDLER PARAMETERS |
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106
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=over |
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108
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=item ARG0 |
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110
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A session id of PoCo::Server::JSONRPC itself. |
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112
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=item ARG1 |
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114
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The id of the client you're treating, send that back in result/error. |
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116
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=item ARG2 .. ARGN |
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118
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JSONRPC argguments |
119
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120
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=back |
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122
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ex) If you send following request |
123
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124
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{"method":"echo", "params":["foo", "bar"]} |
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126
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then, "echo" handler is called and parameters is that ARG0 is component session id, ARG1 is client id, ARG2 "foo", ARG3 "bar". |
127
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128
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=head1 HANDLER RESPONSE |
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130
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You must call either "result" or "error" state in your handlers to response result or error. |
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132
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ex: |
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134
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$kernel->post( $component_session_id => "result" => $client_id, "result value" ) |
135
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136
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$component_session_id is ARG0 in handler. If you do above, response is: |
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138
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{"result":"result value", "error":""} |
139
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140
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141
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=head1 POE METHODS |
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143
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Inner method for POE states. |
144
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145
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=head2 poe__start |
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147
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=cut |
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149
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sub poe__start { |
150
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0
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0
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1
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my ($self, $kernel, $session, $heap) = @_[OBJECT, KERNEL, SESSION, HEAP]; |
151
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152
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0
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$heap->{clients} = {}; |
153
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0
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$heap->{id} = 0; |
154
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155
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0
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$kernel->yield('init_server'); |
156
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} |
157
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158
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=head2 poe_init_server |
159
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160
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Should be defined in Http or Tcp |
161
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=cut |
162
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163
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0
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1
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sub poe_init_server { print "error init_server\n"; } |
164
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165
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=head2 poe_input_handler |
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167
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=cut |
168
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169
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sub poe_input_handler { |
170
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0
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0
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1
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my ($self, $kernel, $session, $heap, $request, $response, $dirmatch) = @_[OBJECT, KERNEL, SESSION, HEAP, ARG0..$#_ ]; |
171
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172
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0
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$heap->{clients}->{$heap->{id}} = {json_id => undef, response => $response}; |
173
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174
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0
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my $json; |
175
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0
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eval { |
176
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$json = $self->{json}->decode( $request->content ); |
177
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}; |
178
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0
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0
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if ($@) { |
179
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0
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$kernel->yield('error', $heap->{id}, q{invalid json request}); |
180
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0
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return; |
181
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} |
182
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183
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0
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$heap->{clients}->{$heap->{id}} = {json_id => $json->{id}, response => $response}; |
184
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185
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0
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0
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0
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unless ($json and $json->{method}) { |
186
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0
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$kernel->yield('error', $heap->{id}, q{parameter "method" is required}); |
187
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0
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return; |
188
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} |
189
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190
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0
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unless ($self->{Handler}{ $json->{method} }) { |
191
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0
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$kernel->yield('error', $heap->{id}, qq{no such method "$json->{method}"}); |
192
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0
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return; |
193
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} |
194
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195
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0
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my $handler = $self->{Handler}{ $json->{method} }; |
196
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my @params = @{ $json->{params} || [] }; |
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197
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198
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$kernel->post($self->{parent}, $handler, $session->ID, $heap->{id}, @params); |
199
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200
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$heap->{id}++; |
201
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0
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0
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if ($heap->{id}>=65535) { # limit to 2 bytes |
202
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$heap->{id} = 0; |
203
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} |
204
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} |
205
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206
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=head2 poe_result |
207
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208
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=cut |
209
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210
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sub poe_result { |
211
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0
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0
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1
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my ($self, $kernel, $heap, $id, @results) = @_[OBJECT, KERNEL, HEAP, ARG0..$#_ ]; |
212
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213
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#~ print "answering to ".$id."\n"; |
214
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215
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0
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my $client = $heap->{clients}->{$id}; |
216
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217
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0
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0
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0
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my $json_content = $self->{json}->encode( |
218
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{ id => $client->{json_id} || undef, |
219
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error => undef, |
220
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result => (@results > 1 ? \@results : $results[0]), |
221
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} |
222
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); |
223
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224
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#~ print "json content : ".$json_content."\n"; |
225
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226
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0
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$kernel->yield('send',$client->{response},$json_content); |
227
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0
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delete $heap->{clients}->{$id}; |
228
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} |
229
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230
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=head2 poe_error |
231
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232
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=cut |
233
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234
|
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sub poe_error { |
235
|
0
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|
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0
|
1
|
|
my ($self, $kernel, $heap, $id, $error) = @_[OBJECT, KERNEL, HEAP, ARG0..$#_]; |
236
|
|
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|
|
|
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237
|
0
|
|
|
|
|
|
my $client = $heap->{clients}->{$id}; |
238
|
|
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|
|
|
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|
239
|
0
|
|
0
|
|
|
|
my $json_error_content = $self->{json}->encode( |
240
|
|
|
|
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|
|
{ id => $client->{json_id} || undef, |
241
|
|
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|
error => $error, |
242
|
|
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|
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|
|
result => undef, |
243
|
|
|
|
|
|
|
} |
244
|
|
|
|
|
|
|
); |
245
|
|
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|
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|
|
246
|
|
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|
|
|
|
#~ print "json content : ".$json_error_content."\n"; |
247
|
|
|
|
|
|
|
|
248
|
0
|
|
|
|
|
|
$kernel->yield('send',$client->{response},$json_error_content); |
249
|
0
|
|
|
|
|
|
delete $heap->{clients}->{$id}; |
250
|
|
|
|
|
|
|
} |
251
|
|
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|
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|
|
|
252
|
|
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|
|
|
|
=head2 poe_send |
253
|
|
|
|
|
|
|
|
254
|
|
|
|
|
|
|
Should be defined in Http or Tcp |
255
|
|
|
|
|
|
|
=cut |
256
|
|
|
|
|
|
|
|
257
|
0
|
|
|
0
|
1
|
|
sub poe_send { print "error poe_send\n"; } |
258
|
|
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|
|
|
|
|
259
|
|
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|
|
|
|
=head1 AUTHOR |
260
|
|
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|
|
|
|
|
261
|
|
|
|
|
|
|
Daisuke Murase <typester@cpan.org> |
262
|
|
|
|
|
|
|
Côme BERNIGAUD <come.bernigaud@laposte.net> |
263
|
|
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264
|
|
|
|
|
|
|
=head1 COPYRIGHT |
265
|
|
|
|
|
|
|
|
266
|
|
|
|
|
|
|
This program is free software; you can redistribute |
267
|
|
|
|
|
|
|
it and/or modify it under the same terms as Perl itself. |
268
|
|
|
|
|
|
|
|
269
|
|
|
|
|
|
|
The full text of the license can be found in the |
270
|
|
|
|
|
|
|
LICENSE file included with this module. |
271
|
|
|
|
|
|
|
|
272
|
|
|
|
|
|
|
=cut |
273
|
|
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274
|
|
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|
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|
|
1; |