/[Redis.pre-github]/lib/Redis.pm
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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Contents of /lib/Redis.pm

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Revision 5 - (show annotations)
Sat Mar 21 22:20:51 2009 UTC (10 years, 5 months ago) by dpavlin
File size: 2563 byte(s)
setnx
1 package Redis;
2
3 use warnings;
4 use strict;
5
6 use IO::Socket::INET;
7 use Data::Dump qw/dump/;
8 use Carp qw/confess/;
9
10 =head1 NAME
11
12 Redis - The great new Redis!
13
14 =cut
15
16 our $VERSION = '0.01';
17
18
19 =head1 SYNOPSIS
20
21 Pure perl bindings for L<http://code.google.com/p/redis/>
22
23 use Redis;
24
25 my $r = Redis->new();
26
27
28
29
30 =head1 FUNCTIONS
31
32 =head2 new
33
34 =cut
35
36 our $sock;
37 my $server = '127.0.0.1:6379';
38
39 sub new {
40 my $class = shift;
41 my $self = {};
42 bless($self, $class);
43
44 warn "# opening socket to $server";
45
46 $sock ||= IO::Socket::INET->new(
47 PeerAddr => $server,
48 Proto => 'tcp',
49 ) || die $!;
50
51 $self;
52 }
53
54 =head1 Connection Handling
55
56 =head2 quit
57
58 $r->quit;
59
60 =cut
61
62 sub quit {
63 my $self = shift;
64
65 close( $sock ) || warn $!;
66 }
67
68 =head2 ping
69
70 $r->ping || die "no server?";
71
72 =cut
73
74 sub ping {
75 print $sock "PING\r\n";
76 my $pong = <$sock>;
77 die "ping failed, got ", dump($pong) unless $pong eq "+PONG\r\n";
78 }
79
80 =head1 Commands operating on string values
81
82 =head2 set
83
84 $r->set( foo => 'bar', $new );
85
86 =cut
87
88 sub set {
89 my ( $self, $k, $v, $new ) = @_;
90 print $sock ( $new ? "SETNX" : "SET" ) . " $k " . length($v) . "\r\n$v\r\n";
91 my $ok = <$sock>;
92 confess dump($ok) unless $ok eq "+OK\r\n";
93 }
94
95 =head2 get
96
97 my $value = $r->get( 'foo' );
98
99 =cut
100
101 sub get {
102 my ( $self, $k ) = @_;
103 print $sock "GET $k\r\n";
104 my $len = <$sock>;
105 # warn "# len: ",dump($len);
106 return undef if $len eq "nil\r\n";
107 my $v;
108 read($sock, $v, $len) || die $!;
109 # warn "# v: ",dump($v);
110 my $crlf;
111 read($sock, $crlf, 2); # skip cr/lf
112 return $v;
113 }
114
115
116
117 =head1 AUTHOR
118
119 Dobrica Pavlinusic, C<< <dpavlin at rot13.org> >>
120
121 =head1 BUGS
122
123 Please report any bugs or feature requests to C<bug-redis at rt.cpan.org>, or through
124 the web interface at L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Redis>. I will be notified, and then you'll
125 automatically be notified of progress on your bug as I make changes.
126
127
128
129
130 =head1 SUPPORT
131
132 You can find documentation for this module with the perldoc command.
133
134 perldoc Redis
135
136
137 You can also look for information at:
138
139 =over 4
140
141 =item * RT: CPAN's request tracker
142
143 L<http://rt.cpan.org/NoAuth/Bugs.html?Dist=Redis>
144
145 =item * AnnoCPAN: Annotated CPAN documentation
146
147 L<http://annocpan.org/dist/Redis>
148
149 =item * CPAN Ratings
150
151 L<http://cpanratings.perl.org/d/Redis>
152
153 =item * Search CPAN
154
155 L<http://search.cpan.org/dist/Redis>
156
157 =back
158
159
160 =head1 ACKNOWLEDGEMENTS
161
162
163 =head1 COPYRIGHT & LICENSE
164
165 Copyright 2009 Dobrica Pavlinusic, all rights reserved.
166
167 This program is free software; you can redistribute it and/or modify it
168 under the same terms as Perl itself.
169
170
171 =cut
172
173 1; # End of Redis

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