Mercurial > pub > Impl
comparison lib/IMPL/Web/Handler/ErrorHandler.pm @ 407:c6e90e02dd17 ref20150831
renamed Lib->lib
author | cin |
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date | Fri, 04 Sep 2015 19:40:23 +0300 |
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406:f23fcb19d3c1 | 407:c6e90e02dd17 |
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1 package IMPL::Web::Handler::ErrorHandler; | |
2 use strict; | |
3 | |
4 use IMPL::Const qw(:prop); | |
5 use IMPL::Exception(); | |
6 use IMPL::declare { | |
7 require => { | |
8 WebException => 'IMPL::Web::Exception', | |
9 ArgumentException => '-IMPL::InvalidArgumentException', | |
10 IOException => '-IMPL::IOException', | |
11 HttpResponse => 'IMPL::Web::HttpResponse', | |
12 Security => 'IMPL::Security' | |
13 }, | |
14 base => { | |
15 'IMPL::Object' => undef, | |
16 'IMPL::Object::Autofill' => '@_', | |
17 'IMPL::Object::Serializable' => undef | |
18 }, | |
19 props => [ | |
20 errors => PROP_RW, | |
21 view => PROP_RW, | |
22 fallback => PROP_RW, | |
23 contentType => PROP_RW | |
24 ] | |
25 }; | |
26 | |
27 sub CTOR { | |
28 my ($this) = @_; | |
29 | |
30 die ArgumentException->new("view") unless $this->view; | |
31 die ArgumentException->new("fallback") unless $this->fallback; | |
32 | |
33 $this->errors({}) unless $this->errors; | |
34 | |
35 } | |
36 | |
37 sub Invoke { | |
38 my ($this,$action,$next) = @_; | |
39 | |
40 undef $@; | |
41 my $result; | |
42 eval { | |
43 $result = $next ? $next->($action) : undef; | |
44 }; | |
45 | |
46 if (my $err = $@) { | |
47 | |
48 my $vars = { | |
49 error => $err, | |
50 result => $result, | |
51 request => sub { $action }, | |
52 app => $action->application, | |
53 location => $action->context->{resourceLocation}, | |
54 resource => $action->context->{resource}, | |
55 document => {}, | |
56 session => sub { Security->context }, | |
57 user => sub { Security->principal }, | |
58 security => sub { $action->security } | |
59 }; | |
60 | |
61 my $status = "500 Internal Server Error"; | |
62 | |
63 if (eval { $err->isa(WebException) }) { | |
64 $status = $err->status; | |
65 } | |
66 | |
67 my ($code) = ($status =~ m/^(\d+)/); | |
68 | |
69 my $text = $this->view->display( | |
70 $err, | |
71 $this->errors->{$code} || $this->fallback, | |
72 $vars | |
73 ); | |
74 | |
75 $result = HttpResponse->new( | |
76 status => $status, | |
77 type => $this->contentType, | |
78 charset => 'utf-8', | |
79 headers => eval{ $err->headers } || {}, | |
80 body => $text | |
81 ); | |
82 } | |
83 | |
84 return $result; | |
85 } | |
86 | |
87 1; | |
88 | |
89 __END__ | |
90 | |
91 =pod | |
92 | |
93 =head1 NAME | |
94 | |
95 C<IMPL::Web::Handler::ErrorHandler> - обертка для обработки исключений. | |
96 | |
97 =head1 SYNOPSIS | |
98 | |
99 Используется в цеопчке обработчиков приложения. | |
100 | |
101 =begin code xml | |
102 | |
103 <handlers type="ARRAY"> | |
104 <item type="IMPL::Web::Handler::ErrorHandler"> | |
105 <contentType>text/html</contentType> | |
106 <loader refid="tt-loader"/> | |
107 <errors type="HASH"> | |
108 <error extname="500">errors/500</error> | |
109 <error extname="404">errors/404</error> | |
110 <error extname="403">errors/403</error> | |
111 </errors> | |
112 <fallback>errors/500</fallback> | |
113 </item> | |
114 </handlers> | |
115 | |
116 =end code xml | |
117 | |
118 =head1 DESCRIPTION | |
119 | |
120 Позволяет создать представление для ресурса в случае ошибки, для этого | |
121 используется соответствие представлений и кодов ошибок. | |
122 | |
123 В результате обработчик либо прозрачно передает результат вышестоящего | |
124 обработчика нижестоящему, либо создает C<IMPL::Web::HttpResponse> с | |
125 соответствующим статусом и содержанием. | |
126 | |
127 =cut |