CWMP/Store/HASH.pm

package CWMP::Store::HASH;

use strict;
use warnings;

use Data::Dump qw/dump/;
use Hash::Merge qw/merge/;
use Carp qw/confess/;

=head1 NAME

CWMP::Store::HASH - base class for hash based storage engines

=head1 METHODS

=head2 open

  $store->open({
        path => 'var/',
        debug => 1,
        clean => 1,
  });

=cut

my $path;

my $debug = 0;

sub open {
        my $self = shift;

        my $args = shift;

        $debug = $args->{debug};
        $path = $args->{path} || confess "no path?";

        warn "open ",dump( $args ) if $debug;

        $path = $self->full_path( $path );

        if ( ! -e $path ) {
                mkdir $path || die "can't create $path: $!";
                warn "created $path directory\n" if $debug;
        } elsif ( $args->{clean} ) {
                warn "removed old $path\n" if $debug;
                foreach my $uid ( $self->all_uids ) {
                        my $file = $self->file( $uid );
                        unlink $file || die "can't remove $file: $!";
                }
        }


}

=head2 update_uid_state

  $store->update_uid_state( $uid, $state );

=cut

sub update_uid_state {
        my ( $self, $uid, $state ) = @_;

        my $file = $self->file( $uid );

        my $old_state = $self->get_state( $uid );

        my $combined = merge( $state, $old_state );

#       warn "## ",dump( $old_state, $state, $combined );

        $self->save_hash( $file, $combined ) || die "can't write $file: $!";

}

=head2 get_state

  $store->get_state( $uid );

=cut

sub get_state {
        my ( $self, $uid ) = @_;

        my $file = $self->file( $uid );

        if ( -e $file ) {
                return $self->load_hash( $file );
        }

        return;
}

=head2 all_uids

  my @uids = $store->all_uids;

=cut

sub all_uids {
        my $self = shift;

        my $ext = $self->extension;
        warn "## extension: $ext";

        opendir(my $d, $path) || die "can't opendir $path: $!";
        my @uids = grep { $_ =~ m/\Q$ext\E$/ && -f "$path/$_" } readdir($d);
        closedir $d;

        return map { my $l = $_; $l =~ s/\Q$ext\E$//; $l } @uids;
}

1;
1	package CWMP::Store::HASH;
2
3	use strict;
4	use warnings;
5
6	use Data::Dump qw/dump/;
7	use Hash::Merge qw/merge/;
8	use Carp qw/confess/;
9
10	=head1 NAME
11
12	CWMP::Store::HASH - base class for hash based storage engines
13
14	=head1 METHODS
15
16	=head2 open
17
18	$store->open({
19	path => 'var/',
20	debug => 1,
21	clean => 1,
22	});
23
24	=cut
25
26	my $path;
27
28	my $debug = 0;
29
30	sub open {
31	my $self = shift;
32
33	my $args = shift;
34
35	$debug = $args->{debug};
36	$path = $args->{path} \|\| confess "no path?";
37
38	warn "open ",dump( $args ) if $debug;
39
40	$path = $self->full_path( $path );
41
42	if ( ! -e $path ) {
43	mkdir $path \|\| die "can't create $path: $!";
44	warn "created $path directory\n" if $debug;
45	} elsif ( $args->{clean} ) {
46	warn "removed old $path\n" if $debug;
47	foreach my $uid ( $self->all_uids ) {
48	my $file = $self->file( $uid );
49	unlink $file \|\| die "can't remove $file: $!";
50	}
51	}
52
53
54	}
55
56	=head2 update_uid_state
57
58	$store->update_uid_state( $uid, $state );
59
60	=cut
61
62	sub update_uid_state {
63	my ( $self, $uid, $state ) = @_;
64
65	my $file = $self->file( $uid );
66
67	my $old_state = $self->get_state( $uid );
68
69	my $combined = merge( $state, $old_state );
70
71	# warn "## ",dump( $old_state, $state, $combined );
72
73	$self->save_hash( $file, $combined ) \|\| die "can't write $file: $!";
74
75	}
76
77	=head2 get_state
78
79	$store->get_state( $uid );
80
81	=cut
82
83	sub get_state {
84	my ( $self, $uid ) = @_;
85
86	my $file = $self->file( $uid );
87
88	if ( -e $file ) {
89	return $self->load_hash( $file );
90	}
91
92	return;
93	}
94
95	=head2 all_uids
96
97	my @uids = $store->all_uids;
98
99	=cut
100
101	sub all_uids {
102	my $self = shift;
103
104	my $ext = $self->extension;
105	warn "## extension: $ext";
106
107	opendir(my $d, $path) \|\| die "can't opendir $path: $!";
108	my @uids = grep { $_ =~ m/\Q$ext\E$/ && -f "$path/$_" } readdir($d);
109	closedir $d;
110
111	return map { my $l = $_; $l =~ s/\Q$ext\E$//; $l } @uids;
112	}
113
114	1;