|  line  | 
 stmt  | 
 bran  | 
 cond  | 
 sub  | 
 pod  | 
 time  | 
 code  | 
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 package Ryu::Exception;  | 
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3
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1
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73435
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 use strict;  | 
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1
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10
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1
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26
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4
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1
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1
  
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4
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 use warnings;  | 
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1
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1
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6
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 our $VERSION = '3.001'; # VERSION  | 
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7
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 our $AUTHORITY = 'cpan:TEAM'; # AUTHORITY  | 
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8
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9
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 =head1 NAME  | 
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10
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11
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 Ryu::Exception - support for L-style failure information  | 
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12
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13
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 =head1 SYNOPSIS  | 
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14
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15
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  use Ryu::Exception;  | 
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16
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  my $exception = Ryu::Exception->new(  | 
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17
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   type    => 'http',  | 
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18
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   message => '404 response'  | 
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19
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   details => [ $response, $request ]  | 
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20
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  );  | 
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21
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  Future->fail($exception->failure);  | 
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22
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23
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 =head1 DESCRIPTION  | 
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24
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25
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 Generic exceptions interface, implements the 3-part failure codes as described in L.  | 
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26
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27
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 =cut  | 
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28
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29
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1
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1
  
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615
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 use Future;  | 
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1
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10786
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1
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31
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30
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1
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1
  
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7
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 use Scalar::Util;  | 
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1
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2
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1
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31
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32
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 =head2 new  | 
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33
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34
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 Instantiate from named parameters.  | 
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35
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36
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 =cut  | 
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37
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38
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3
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3
  
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1
  
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3581
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 sub new { bless { @_[1..$#_] }, $_[0] }  | 
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39
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40
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 =head2 throw  | 
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41
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42
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 Throws this exception.  | 
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43
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44
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  $exception->throw;  | 
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45
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46
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 =cut  | 
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47
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48
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0
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0
  
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1
  
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0
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 sub throw { die shift }  | 
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49
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50
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 =head2 type  | 
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51
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52
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 Returns the type, which should be a string such as C.  | 
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53
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54
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 =cut  | 
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55
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56
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5
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5
  
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1
  
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620
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 sub type { shift->{type} }  | 
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57
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58
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 =head2 message  | 
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59
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60
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 Returns the message, which is a freeform string.  | 
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61
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62
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 =cut  | 
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63
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| 
64
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5
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5
  
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1
  
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2663
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 sub message { shift->{message} }  | 
| 
65
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66
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 =head2 details  | 
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67
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68
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 Returns the list of details, the specifics of which are specific to the type.  | 
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69
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70
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 =cut  | 
| 
71
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| 
72
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4
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 50
  
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4
  
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1
  
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605
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 sub details { @{ shift->{details} || [] } }  | 
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4
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20
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| 
73
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| 
74
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 =head2 fail  | 
| 
75
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| 
76
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 Fails the given L with this exception.  | 
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77
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    | 
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78
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 =cut  | 
| 
79
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| 
80
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 sub fail {  | 
| 
81
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1
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1
  
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1
  
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530
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     my ($self, $f) = @_;  | 
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82
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1
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 50
  
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 33
  
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13
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     die "expects a Future" unless Scalar::Util::blessed($f) && $f->isa('Future');  | 
| 
83
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1
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4
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     $self->as_future->on_ready($f);  | 
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84
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1
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103
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     $f;  | 
| 
85
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 }  | 
| 
86
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    | 
| 
87
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 =head2 as_future  | 
| 
88
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    | 
| 
89
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 Returns a failed L containing the message, type and details from  | 
| 
90
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 this exception.  | 
| 
91
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    | 
| 
92
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 =cut  | 
| 
93
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    | 
| 
94
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 sub as_future {  | 
| 
95
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1
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1
  
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1
  
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2
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     my ($self) = @_;  | 
| 
96
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1
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3
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     return Future->fail($self->message, $self->type, $self->details);  | 
| 
97
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 }  | 
| 
98
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    | 
| 
99
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 =head2 from_future  | 
| 
100
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    | 
| 
101
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 Extracts failure information from a L and instantiates accordingly.  | 
| 
102
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    | 
| 
103
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 =cut  | 
| 
104
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    | 
| 
105
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 sub from_future {  | 
| 
106
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1
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1
  
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1
  
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3
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     my ($class, $f) = @_;  | 
| 
107
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1
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 50
  
 | 
  
 33
  
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 | 
9
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     die "expects a Future" unless Scalar::Util::blessed($f) && $f->isa('Future');  | 
| 
108
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1
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 50
  
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4
 | 
     die "Future is not ready" unless $f->is_ready;  | 
| 
109
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1
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 50
  
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 | 
7
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     my ($msg, $type, @details) = $f->failure or die "Future is not failed?";  | 
| 
110
 | 
1
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 | 
16
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     $class->new(  | 
| 
111
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         message => $msg,  | 
| 
112
 | 
 
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         type    => $type,  | 
| 
113
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         details => \@details  | 
| 
114
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 | 
     )  | 
| 
115
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 | 
 
 | 
 
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 | 
 
 | 
 
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| 
116
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 | 
 
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    | 
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117
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 | 
 
 | 
 
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 1;  | 
| 
118
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    | 
| 
119
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 __END__  |