/[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 13 - (show annotations)
Sat Mar 21 23:26:46 2009 UTC (15 years ago) by dpavlin
File size: 4063 byte(s)
randomkey
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 sub _sock_result {
55 my $result = <$sock>;
56 warn "# result: ",dump( $result );
57 $result =~ s{\r\n$}{} || warn "can't find cr/lf";
58 return $result;
59 }
60
61 sub _sock_result_bulk {
62 my $len = <$sock>;
63 warn "# len: ",dump($len);
64 return undef if $len eq "nil\r\n";
65 my $v;
66 read($sock, $v, $len) || die $!;
67 warn "# v: ",dump($v);
68 my $crlf;
69 read($sock, $crlf, 2); # skip cr/lf
70 return $v;
71 }
72
73 =head1 Connection Handling
74
75 =head2 quit
76
77 $r->quit;
78
79 =cut
80
81 sub quit {
82 my $self = shift;
83
84 close( $sock ) || warn $!;
85 }
86
87 =head2 ping
88
89 $r->ping || die "no server?";
90
91 =cut
92
93 sub ping {
94 print $sock "PING\r\n";
95 my $pong = <$sock>;
96 die "ping failed, got ", dump($pong) unless $pong eq "+PONG\r\n";
97 }
98
99 =head1 Commands operating on string values
100
101 =head2 set
102
103 $r->set( foo => 'bar', $new );
104
105 =cut
106
107 sub set {
108 my ( $self, $k, $v, $new ) = @_;
109 print $sock ( $new ? "SETNX" : "SET" ) . " $k " . length($v) . "\r\n$v\r\n";
110 my $ok = <$sock>;
111 confess dump($ok) unless $ok eq "+OK\r\n";
112 }
113
114 =head2 get
115
116 my $value = $r->get( 'foo' );
117
118 =cut
119
120 sub get {
121 my ( $self, $k ) = @_;
122 print $sock "GET $k\r\n";
123 _sock_result_bulk();
124 }
125
126 =head2 incr
127
128 $r->incr('counter');
129 $r->incr('tripplets', 3);
130
131 =cut
132
133
134
135 sub incr {
136 my ( $self, $key, $value ) = @_;
137 if ( defined $value ) {
138 print $sock "INCRBY $key $value\r\n";
139 } else {
140 print $sock "INCR $key\r\n";
141 }
142 _sock_result();
143 }
144
145 =head2 decr
146
147 $r->decr('counter');
148 $r->decr('tripplets', 3);
149
150 =cut
151
152 sub decr {
153 my ( $self, $key, $value ) = @_;
154 if ( defined $value ) {
155 print $sock "DECRBY $key $value\r\n";
156 } else {
157 print $sock "DECR $key\r\n";
158 }
159 _sock_result();
160 }
161
162 =head2 exists
163
164 $r->exists( 'key' ) && print "got key!";
165
166 =cut
167
168 sub exists {
169 my ( $self, $key ) = @_;
170 print $sock "EXISTS $key\r\n";
171 _sock_result();
172 }
173
174 =head2 del
175
176 $r->del( 'key' ) || warn "key doesn't exist";
177
178 =cut
179
180 sub del {
181 my ( $self, $key ) = @_;
182 print $sock "DEL $key\r\n";
183 _sock_result();
184 }
185
186 =head2 type
187
188 $r->type( 'key' ); # = string
189
190 =cut
191
192 sub type {
193 my ( $self, $key ) = @_;
194 print $sock "TYPE $key\r\n";
195 _sock_result();
196 }
197
198 =head1 Commands operating on the key space
199
200 =head2 keys
201
202 my @keys = $r->keys( '*glob_pattern*' );
203
204 =cut
205
206 sub keys {
207 my ( $self, $glob ) = @_;
208 print $sock "KEYS $glob\r\n";
209 return split(/\s/, _sock_result_bulk());
210 }
211
212 =head2 randomkey
213
214 my $key = $r->randomkey;
215
216 =cut
217
218 sub randomkey {
219 my ( $self, $glob ) = @_;
220 print $sock "RANDOMKEY\r\n";
221 _sock_result();
222 }
223
224 =head1 AUTHOR
225
226 Dobrica Pavlinusic, C<< <dpavlin at rot13.org> >>
227
228 =head1 BUGS
229
230 Please report any bugs or feature requests to C<bug-redis at rt.cpan.org>, or through
231 the web interface at L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Redis>. I will be notified, and then you'll
232 automatically be notified of progress on your bug as I make changes.
233
234
235
236
237 =head1 SUPPORT
238
239 You can find documentation for this module with the perldoc command.
240
241 perldoc Redis
242
243
244 You can also look for information at:
245
246 =over 4
247
248 =item * RT: CPAN's request tracker
249
250 L<http://rt.cpan.org/NoAuth/Bugs.html?Dist=Redis>
251
252 =item * AnnoCPAN: Annotated CPAN documentation
253
254 L<http://annocpan.org/dist/Redis>
255
256 =item * CPAN Ratings
257
258 L<http://cpanratings.perl.org/d/Redis>
259
260 =item * Search CPAN
261
262 L<http://search.cpan.org/dist/Redis>
263
264 =back
265
266
267 =head1 ACKNOWLEDGEMENTS
268
269
270 =head1 COPYRIGHT & LICENSE
271
272 Copyright 2009 Dobrica Pavlinusic, all rights reserved.
273
274 This program is free software; you can redistribute it and/or modify it
275 under the same terms as Perl itself.
276
277
278 =cut
279
280 1; # End of Redis

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