/[webpac2]/trunk/lib/WebPAC/Config.pm
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Contents of /trunk/lib/WebPAC/Config.pm

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Revision 688 - (show annotations)
Sun Sep 24 18:52:31 2006 UTC (17 years, 7 months ago) by dpavlin
File size: 3398 byte(s)
 r971@llin:  dpavlin | 2006-09-24 20:04:20 +0200
 iterate_inputs now returns also database name and full database config [0.02]

1 package WebPAC::Config;
2
3 use warnings;
4 use strict;
5
6 use base qw/WebPAC::Common/;
7
8 use Data::Dump qw/dump/;
9 use YAML qw/LoadFile/;
10
11 =head1 NAME
12
13 WebPAC::Config - handle WebPAC configuration file
14
15 =head1 VERSION
16
17 Version 0.02
18
19 =cut
20
21 our $VERSION = '0.02';
22
23 =head1 SYNOPSIS
24
25 FIXME
26
27 =head1 FUNCTIONS
28
29 =head2 new
30
31 Create new configuration object.
32
33 my $config = new WebPAC::Config(
34 path => '/optional/path/to/config.yml'
35 );
36
37 =cut
38
39 sub new {
40 my $class = shift;
41 my $self = {@_};
42 bless($self, $class);
43
44 my $log = $self->_get_logger();
45
46 if (! $self->{path}) {
47 my $hostname = `hostname`;
48 chomp($hostname);
49 $hostname =~ s/\..+$//;
50 if (-e "conf/$hostname.yml") {
51 $self->{path} = "conf/$hostname.yml";
52 $log->info("using host configuration file: ", $self->{path});
53 }
54 }
55
56 $self->{path} ||= 'conf/config.yml';
57
58 $self->{config} = LoadFile($self->{path}) ||
59 $log->logdie("can't open ",$self->{path}, ": $!");
60
61 $log->debug("config: ", dump( $self->{config} ));
62
63 $self ? return $self : return undef;
64 }
65
66 =head2 databases
67
68 Return all databases in config
69
70 my $config_databases_hash = $config->databases;
71 my @config_databases_names = $config->databases;
72
73 =cut
74
75 sub databases {
76 my $self = shift;
77 return unless ($self->{config});
78 if (wantarray) {
79 return keys %{ $self->{config}->{databases} };
80 } else {
81 return $self->{config}->{databases};
82 }
83 }
84
85 =head2 use_indexer
86
87 Which indexer are we using?
88
89 $config->use_indexer;
90
91 =cut
92
93 sub use_indexer {
94 my $self = shift;
95 my $default = 'hyperestraier';
96 return unless ($self->{config});
97 return $self->{config}->{use_indexer} || $default;
98 }
99
100 =head2 get
101
102 $config->get('top-level_key');
103
104 =cut
105
106 sub get {
107 my $self = shift;
108 my $what = shift || return;
109 return $self->{config}->{$what};
110 }
111
112 =head2 webpac
113
114 Return C<< config -> webpac >> parts
115
116 my @supported_inputs = $config->webpac('inputs');
117 my $inputs_hash = $config->webpac('inputs');
118
119 =cut
120
121 sub webpac {
122 my $self = shift;
123
124 $self->_get_logger()->logdie("can't find config->webpac") unless defined( $self->{config}->{webpac} );
125
126 my $what = shift || return $self->{config}->{webpac};
127
128 if (wantarray && ref( $self->{config}->{webpac}->{$what} ) eq 'HASH') {
129 return keys %{ $self->{config}->{webpac}->{$what} };
130 } else {
131 return $self->{config}->{webpac}->{$what};
132 }
133
134 }
135
136 =head2 iterate_inputs
137
138 $config->iterate_inputs( sub {
139 my ($input, $database, $database_config_hash) = @_;
140 # ... do something with input config hash
141 } );
142
143 =cut
144
145 sub iterate_inputs {
146 my $self = shift;
147
148 my $log = $self->_get_logger();
149
150 my $code_ref = shift;
151 $log->logdie("called with CODE") unless ( ref($code_ref) eq 'CODE' );
152
153 while (my ($database, $db_config) = each %{ $self->{config}->{databases} }) {
154 my @inputs;
155 if (ref($db_config->{input}) eq 'ARRAY') {
156 @inputs = @{ $db_config->{input} };
157 } elsif ($db_config->{input}) {
158 push @inputs, $db_config->{input};
159 } else {
160 $log->info("database $database doesn't have inputs defined");
161 }
162
163 foreach my $input (@inputs) {
164 $log->debug("iterating over input ", dump($input));
165 $code_ref->($input, $database, $db_config);
166 }
167 }
168
169 }
170
171
172 =head1 AUTHOR
173
174 Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >>
175
176 =head1 COPYRIGHT & LICENSE
177
178 Copyright 2006 Dobrica Pavlinusic, All Rights Reserved.
179
180 This program is free software; you can redistribute it and/or modify it
181 under the same terms as Perl itself.
182
183 =cut
184
185 1; # End of WebPAC::Config

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