1 |
# Dobrica Pavlinusic, <dpavlin@rot13.org> 10/26/07 21:37:12 CEST |
2 |
package CWMP::Store::YAML; |
3 |
|
4 |
use strict; |
5 |
use warnings; |
6 |
|
7 |
use Data::Dump qw/dump/; |
8 |
use YAML qw/LoadFile DumpFile/; |
9 |
use Hash::Merge qw/merge/; |
10 |
use Carp qw/confess/; |
11 |
|
12 |
=head1 NAME |
13 |
|
14 |
CWMP::Store::YAML - use YAML as storage |
15 |
|
16 |
=head1 METHODS |
17 |
|
18 |
=head2 open |
19 |
|
20 |
$store->open({ |
21 |
path => 'var/', |
22 |
debug => 1, |
23 |
clean => 1, |
24 |
}); |
25 |
|
26 |
=cut |
27 |
|
28 |
my $path; |
29 |
|
30 |
my $debug = 0; |
31 |
|
32 |
sub open { |
33 |
my $self = shift; |
34 |
|
35 |
my $args = shift; |
36 |
|
37 |
$debug = $args->{debug}; |
38 |
$path = $args->{path} || confess "no path?"; |
39 |
|
40 |
warn "open ",dump( $args ) if $debug; |
41 |
|
42 |
$path = "$path/yaml"; |
43 |
|
44 |
if ( ! -e $path ) { |
45 |
mkdir $path || die "can't create $path: $!"; |
46 |
warn "created $path directory\n" if $debug; |
47 |
} elsif ( $args->{clean} ) { |
48 |
warn "removed old $path\n" if $debug; |
49 |
foreach my $uid ( $self->all_uids ) { |
50 |
my $file = "$path/$uid.yml"; |
51 |
unlink $file || die "can't remove $file: $!"; |
52 |
} |
53 |
} |
54 |
|
55 |
|
56 |
} |
57 |
|
58 |
=head2 update_uid_state |
59 |
|
60 |
$store->update_uid_state( $uid, $state ); |
61 |
|
62 |
=cut |
63 |
|
64 |
sub update_uid_state { |
65 |
my ( $self, $uid, $state ) = @_; |
66 |
|
67 |
my $file = "$path/$uid.yml"; |
68 |
|
69 |
my $old_state = $self->get_state( $uid ); |
70 |
|
71 |
my $combined = merge( $state, $old_state ); |
72 |
|
73 |
# warn "## ",dump( $old_state, $state, $combined ); |
74 |
|
75 |
DumpFile( $file, $combined ) || die "can't write $file: $!"; |
76 |
|
77 |
} |
78 |
|
79 |
=head2 get_state |
80 |
|
81 |
$store->get_state( $uid ); |
82 |
|
83 |
=cut |
84 |
|
85 |
sub get_state { |
86 |
my ( $self, $uid ) = @_; |
87 |
|
88 |
my $file = "$path/$uid.yml"; |
89 |
|
90 |
if ( -e $file ) { |
91 |
return LoadFile( $file ); |
92 |
} |
93 |
|
94 |
return; |
95 |
} |
96 |
|
97 |
=head2 all_uids |
98 |
|
99 |
my @uids = $store->all_uids; |
100 |
|
101 |
=cut |
102 |
|
103 |
sub all_uids { |
104 |
my $self = shift; |
105 |
|
106 |
opendir(my $d, $path) || die "can't opendir $path: $!"; |
107 |
my @uids = grep { /\.yml$/ && -f "$path/$_" } readdir($d); |
108 |
closedir $d; |
109 |
|
110 |
return map { my $l = $_; $l =~ s/\.yml$//; $l } @uids; |
111 |
} |
112 |
|
113 |
1; |