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1 | package Catalyst::IOC::ConstructorInjection; |
2 | use Moose; |
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3 | use Bread::Board::Dependency; |
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4 | use Try::Tiny; |
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5 | use Catalyst::Utils (); |
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6 | |
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7 | extends 'Bread::Board::ConstructorInjection'; |
8 | |
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9 | sub BUILD { |
10 | my $self = shift; |
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11 | $self->add_dependency( |
12 | __catalyst_config => Bread::Board::Dependency->new( |
13 | service_path => '/config' |
14 | ) |
15 | ); |
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16 | } |
17 | |
18 | has catalyst_component_name => ( |
19 | is => 'ro', |
20 | ); |
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21 | |
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22 | has config => ( |
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23 | init_arg => undef, |
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24 | is => 'ro', |
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25 | isa => 'HashRef', |
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26 | writer => '_set_config', |
27 | clearer => '_clear_config', |
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28 | ); |
29 | |
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30 | around resolve_dependencies => sub { |
31 | my ($orig, $self, @args) = @_; |
32 | my %deps = $self->$orig(@args); |
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33 | my $app_config = delete $deps{__catalyst_config}; |
34 | my $conf_key = Catalyst::Utils::class2classsuffix($self->catalyst_component_name); |
35 | $self->_set_config($app_config->{$conf_key} || {}); |
36 | return %deps; |
37 | }; |
38 | |
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39 | sub get { |
40 | my $self = shift; |
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41 | my $component = $self->class; |
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42 | |
43 | my $params = $self->params; |
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44 | my %config = (%{ $self->config || {} }, %{ $params }); |
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45 | $self->_clear_config; |
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46 | |
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47 | # FIXME - Is depending on the application name to pass into constructors here a good idea? |
48 | # This makes app/ctx split harder I think.. Need to think more here, but I think |
49 | # we want to pass the application in as a parameter when building the service |
50 | # rather than depending on the app name, so that later, when the app becomes an instance |
51 | # then it'll get passed in, and components can stash themselves 'per app instance' |
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52 | my $app_name = $self->param('application_name'); |
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53 | |
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54 | # Stash catalyst_component_name in the config here, so that custom COMPONENT |
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55 | # methods also pass it. |
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56 | $config{catalyst_component_name} = $self->catalyst_component_name; |
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57 | |
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58 | unless ( $component->can( 'COMPONENT' ) ) { |
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59 | # FIXME - make some deprecation warnings |
60 | return $component; |
61 | } |
62 | |
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63 | my $instance; |
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64 | try { |
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65 | $instance = $component->COMPONENT( $app_name, \%config ); |
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66 | } |
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67 | catch { |
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68 | Catalyst::Exception->throw( |
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69 | message => qq/Couldn't instantiate component "$component", "$_"/ |
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70 | ); |
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71 | }; |
72 | |
73 | return $instance |
74 | if blessed $instance; |
75 | |
76 | my $metaclass = Moose::Util::find_meta($component); |
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77 | my $method_meta = $metaclass->find_method_by_name('COMPONENT'); |
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78 | my $component_method_from = $method_meta->associated_metaclass->name; |
79 | my $value = defined($instance) ? $instance : 'undef'; |
80 | Catalyst::Exception->throw( |
81 | message => |
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82 | qq/Couldn't instantiate component "$component", COMPONENT method (from $component_method_from) didn't return an object-like value (value was $value)./ |
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83 | ); |
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84 | } |
85 | |
86 | __PACKAGE__->meta->make_immutable; |
87 | |
88 | no Moose; 1; |
89 | |
90 | __END__ |
91 | |
92 | =pod |
93 | |
94 | =head1 NAME |
95 | |
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96 | Catalyst::IOC::ConstructorInjection |
97 | |
98 | =head1 SYNOPSIS |
99 | |
100 | =head1 DESCRIPTION |
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101 | |
102 | =head1 AUTHORS |
103 | |
104 | Catalyst Contributors, see Catalyst.pm |
105 | |
106 | =head1 COPYRIGHT |
107 | |
108 | This library is free software. You can redistribute it and/or modify it under |
109 | the same terms as Perl itself. |
110 | |
111 | =cut |