/[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!
ViewVC logotype

Contents of /lib/Redis.pm

Parent Directory Parent Directory | Revision Log Revision Log


Revision 30 - (show annotations)
Sun Mar 22 17:02:46 2009 UTC (10 years, 10 months ago) by dpavlin
File size: 7208 byte(s)
sadd, srem
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_read_bulk {
62 my $len = <$sock>;
63 warn "## bulk len: ",dump($len);
64 return undef if $len eq "nil\r\n";
65 my $v;
66 if ( $len > 0 ) {
67 read($sock, $v, $len) || die $!;
68 warn "## bulk v: ",dump($v);
69 }
70 my $crlf;
71 read($sock, $crlf, 2); # skip cr/lf
72 return $v;
73 }
74
75 sub _sock_result_bulk {
76 my $self = shift;
77 warn "## _sock_result_bulk ",dump( @_ );
78 print $sock join(' ',@_) . "\r\n";
79 _sock_read_bulk();
80 }
81
82 sub __sock_ok {
83 my $ok = <$sock>;
84 return undef if $ok eq "nil\r\n";
85 confess dump($ok) unless $ok eq "+OK\r\n";
86 }
87
88 sub _sock_send {
89 my $self = shift;
90 warn "## _sock_send ",dump( @_ );
91 print $sock join(' ',@_) . "\r\n";
92 _sock_result();
93 }
94
95 sub _sock_send_ok {
96 my $self = shift;
97 warn "## _sock_send_ok ",dump( @_ );
98 print $sock join(' ',@_) . "\r\n";
99 __sock_ok();
100 }
101
102 sub __sock_send_bulk_raw {
103 my $self = shift;
104 warn "## _sock_send_bulk ",dump( @_ );
105 my $value = pop;
106 $value = '' unless defined $value; # FIXME errr? nil?
107 print $sock join(' ',@_) . ' ' . length($value) . "\r\n$value\r\n"
108 }
109
110 sub _sock_send_bulk {
111 __sock_send_bulk_raw( @_ );
112 __sock_ok();
113 }
114
115 sub _sock_send_bulk_number {
116 __sock_send_bulk_raw( @_ );
117 my $v = _sock_result();
118 confess $v unless $v =~ m{^\-?\d+$};
119 return $v;
120 }
121
122 =head1 Connection Handling
123
124 =head2 quit
125
126 $r->quit;
127
128 =cut
129
130 sub quit {
131 my $self = shift;
132
133 close( $sock ) || warn $!;
134 }
135
136 =head2 ping
137
138 $r->ping || die "no server?";
139
140 =cut
141
142 sub ping {
143 print $sock "PING\r\n";
144 my $pong = <$sock>;
145 die "ping failed, got ", dump($pong) unless $pong eq "+PONG\r\n";
146 }
147
148 =head1 Commands operating on string values
149
150 =head2 set
151
152 $r->set( foo => 'bar', $new );
153
154 =cut
155
156 sub set {
157 my ( $self, $key, $value, $new ) = @_;
158 $self->_sock_send_bulk( "SET" . ( $new ? 'NX' : '' ), $key, $value );
159 }
160
161 =head2 get
162
163 my $value = $r->get( 'foo' );
164
165 =cut
166
167 sub get {
168 my $self = shift;
169 $self->_sock_result_bulk('GET', @_);
170 }
171
172 =head2 incr
173
174 $r->incr('counter');
175 $r->incr('tripplets', 3);
176
177 =cut
178
179
180
181 sub incr {
182 my $self = shift;
183 $self->_sock_send( 'INCR' . ( $#_ ? 'BY' : '' ), @_ );
184 }
185
186 =head2 decr
187
188 $r->decr('counter');
189 $r->decr('tripplets', 3);
190
191 =cut
192
193 sub decr {
194 my $self = shift;
195 $self->_sock_send( 'DECR' . ( $#_ ? 'BY' : '' ), @_ );
196 }
197
198 =head2 exists
199
200 $r->exists( 'key' ) && print "got key!";
201
202 =cut
203
204 sub exists {
205 my ( $self, $key ) = @_;
206 $self->_sock_send( 'EXISTS', $key );
207 }
208
209 =head2 del
210
211 $r->del( 'key' ) || warn "key doesn't exist";
212
213 =cut
214
215 sub del {
216 my ( $self, $key ) = @_;
217 $self->_sock_send( 'DEL', $key );
218 }
219
220 =head2 type
221
222 $r->type( 'key' ); # = string
223
224 =cut
225
226 sub type {
227 my ( $self, $key ) = @_;
228 $self->_sock_send( 'TYPE', $key );
229 }
230
231 =head1 Commands operating on the key space
232
233 =head2 keys
234
235 my @keys = $r->keys( '*glob_pattern*' );
236
237 =cut
238
239 sub keys {
240 my ( $self, $glob ) = @_;
241 return split(/\s/, $self->_sock_result_bulk( 'KEYS', $glob ));
242 }
243
244 =head2 randomkey
245
246 my $key = $r->randomkey;
247
248 =cut
249
250 sub randomkey {
251 my ( $self ) = @_;
252 $self->_sock_send( 'RANDOMKEY' );
253 }
254
255 =head2 rename
256
257 my $ok = $r->rename( 'old-key', 'new-key', $new );
258
259 =cut
260
261 sub rename {
262 my ( $self, $old, $new, $nx ) = @_;
263 $self->_sock_send_ok( 'RENAME' . ( $nx ? 'NX' : '' ), $old, $new );
264 }
265
266 =head2 dbsize
267
268 my $nr_keys = $r->dbsize;
269
270 =cut
271
272 sub dbsize {
273 my ( $self ) = @_;
274 $self->_sock_send('DBSIZE');
275 }
276
277 =head1 Commands operating on lists
278
279 =head2 rpush
280
281 $r->rpush( $key, $value );
282
283 =cut
284
285 sub rpush {
286 my ( $self, $key, $value ) = @_;
287 $self->_sock_send_bulk('RPUSH', $key, $value);
288 }
289
290 =head2 lpush
291
292 $r->lpush( $key, $value );
293
294 =cut
295
296 sub lpush {
297 my ( $self, $key, $value ) = @_;
298 $self->_sock_send_bulk('LPUSH', $key, $value);
299 }
300
301 =head2 llen
302
303 $r->llen( $key );
304
305 =cut
306
307 sub llen {
308 my ( $self, $key ) = @_;
309 $self->_sock_send( 'LLEN', $key );
310 }
311
312 =head2 lrange
313
314 my @list = $r->lrange( $key, $start, $end );
315
316 =cut
317
318 sub lrange {
319 my ( $self, $key, $start, $end ) = @_;
320 my $size = $self->_sock_send('LRANGE', $key, $start, $end);
321
322 confess $size unless $size > 0;
323 $size--;
324
325 my @list = ( 0 .. $size );
326 foreach ( 0 .. $size ) {
327 $list[ $_ ] = _sock_read_bulk();
328 }
329
330 warn "## lrange $key $start $end = [$size] ", dump( @list );
331 return @list;
332 }
333
334 =head2 ltrim
335
336 my $ok = $r->ltrim( $key, $start, $end );
337
338 =cut
339
340 sub ltrim {
341 my ( $self, $key, $start, $end ) = @_;
342 $self->_sock_send_ok( 'LTRIM', $key, $start, $end );
343 }
344
345 =head2 lindex
346
347 $r->lindex( $key, $index );
348
349 =cut
350
351 sub lindex {
352 my ( $self, $key, $index ) = @_;
353 $self->_sock_result_bulk( 'LINDEX', $key, $index );
354 }
355
356 =head2 lset
357
358 $r->lset( $key, $index, $value );
359
360 =cut
361
362 sub lset {
363 my ( $self, $key, $index, $value ) = @_;
364 $self->_sock_send_bulk( 'LSET', $key, $index, $value );
365 }
366
367 =head2 lrem
368
369 my $modified_count = $r->lrem( $key, $count, $value );
370
371 =cut
372
373 sub lrem {
374 my ( $self, $key, $count, $value ) = @_;
375 $self->_sock_send_bulk_number( 'LREM', $key, $count, $value );
376 }
377
378 =head2 lpop
379
380 my $value = $r->lpop( $key );
381
382 =cut
383
384 sub lpop {
385 my ( $self, $key ) = @_;
386 $self->_sock_result_bulk( 'LPOP', $key );
387 }
388
389 =head2 rpop
390
391 my $value = $r->rpop( $key );
392
393 =cut
394
395 sub rpop {
396 my ( $self, $key ) = @_;
397 $self->_sock_result_bulk( 'RPOP', $key );
398 }
399
400 =head1 Commands operating on sets
401
402 =head2 sadd
403
404 $r->sadd( $key, $member );
405
406 =cut
407
408 sub sadd {
409 my ( $self, $key, $member ) = @_;
410 $self->_sock_send_bulk_number( 'SADD', $key, $member );
411 }
412
413 =head2 srem
414
415 $r->srem( $key, $member );
416
417 =cut
418
419 sub srem {
420 my ( $self, $key, $member ) = @_;
421 $self->_sock_send_bulk_number( 'SREM', $key, $member );
422 }
423
424 =head1 AUTHOR
425
426 Dobrica Pavlinusic, C<< <dpavlin at rot13.org> >>
427
428 =head1 BUGS
429
430 Please report any bugs or feature requests to C<bug-redis at rt.cpan.org>, or through
431 the web interface at L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Redis>. I will be notified, and then you'll
432 automatically be notified of progress on your bug as I make changes.
433
434
435
436
437 =head1 SUPPORT
438
439 You can find documentation for this module with the perldoc command.
440
441 perldoc Redis
442
443
444 You can also look for information at:
445
446 =over 4
447
448 =item * RT: CPAN's request tracker
449
450 L<http://rt.cpan.org/NoAuth/Bugs.html?Dist=Redis>
451
452 =item * AnnoCPAN: Annotated CPAN documentation
453
454 L<http://annocpan.org/dist/Redis>
455
456 =item * CPAN Ratings
457
458 L<http://cpanratings.perl.org/d/Redis>
459
460 =item * Search CPAN
461
462 L<http://search.cpan.org/dist/Redis>
463
464 =back
465
466
467 =head1 ACKNOWLEDGEMENTS
468
469
470 =head1 COPYRIGHT & LICENSE
471
472 Copyright 2009 Dobrica Pavlinusic, all rights reserved.
473
474 This program is free software; you can redistribute it and/or modify it
475 under the same terms as Perl itself.
476
477
478 =cut
479
480 1; # End of Redis

  ViewVC Help
Powered by ViewVC 1.1.26