1 |
package Time::Available; |
2 |
|
3 |
use 5.008001; |
4 |
use strict; |
5 |
use warnings; |
6 |
|
7 |
require Exporter; |
8 |
|
9 |
our @ISA = qw(Exporter); |
10 |
|
11 |
# Items to export into callers namespace by default. Note: do not export |
12 |
# names by default without a very good reason. Use EXPORT_OK instead. |
13 |
# Do not simply export all your public functions/methods/constants. |
14 |
|
15 |
# This allows declaration use Time::Available ':all'; |
16 |
# If you do not need this, moving things directly into @EXPORT or @EXPORT_OK |
17 |
# will save memory. |
18 |
our %EXPORT_TAGS = ( |
19 |
'days' => [ qw( |
20 |
DAY_MONDAY |
21 |
DAY_TUESDAY |
22 |
DAY_WEDNESDAY |
23 |
DAY_THURSDAY |
24 |
DAY_FRIDAY |
25 |
DAY_SATURDAY |
26 |
DAY_SUNDAY |
27 |
DAY_WEEKDAY |
28 |
DAY_WEEKEND |
29 |
DAY_EVERYDAY |
30 |
) ] |
31 |
); |
32 |
|
33 |
our @EXPORT_OK = ( @{ $EXPORT_TAGS{'days'} } ); |
34 |
|
35 |
our @EXPORT = qw( |
36 |
|
37 |
); |
38 |
|
39 |
our $VERSION = '0.01'; |
40 |
|
41 |
# define some constants used later |
42 |
use constant DAY_MONDAY => 0x01; |
43 |
use constant DAY_TUESDAY => 0x02; |
44 |
use constant DAY_WEDNESDAY => 0x04; |
45 |
use constant DAY_THURSDAY => 0x08; |
46 |
use constant DAY_FRIDAY => 0x10; |
47 |
use constant DAY_SATURDAY => 0x20; |
48 |
use constant DAY_SUNDAY => 0x40; |
49 |
use constant DAY_WEEKDAY => 0x1F; |
50 |
use constant DAY_WEEKEND => 0x60; |
51 |
use constant DAY_EVERYDAY => 0x7F; |
52 |
|
53 |
use constant SEC_PER_DAY => 86400; |
54 |
|
55 |
my $debug = 0; |
56 |
|
57 |
# |
58 |
# make new instance |
59 |
# |
60 |
sub new { |
61 |
my $class = shift; |
62 |
my $self = {}; |
63 |
bless($self, $class); |
64 |
$self->{ARGS} = {@_}; |
65 |
$debug = $self->{ARGS}->{DEBUG}; |
66 |
|
67 |
die("need start time") if (! $self->{ARGS}->{start}); |
68 |
|
69 |
# calc start and stop seconds |
70 |
my ($hh,$mm,$ss) = split(/:/,$self->{ARGS}->{start},3); |
71 |
my $s = $hh * 3600 || die("need at least hour specified for start time"); |
72 |
$s += $mm * 60 if ($mm); |
73 |
$s += $ss if ($ss); |
74 |
$self->{start} = $s; |
75 |
|
76 |
die("need end time") if (! $self->{ARGS}->{end}); |
77 |
|
78 |
($hh,$mm,$ss) = split(/:/,$self->{ARGS}->{end},3); |
79 |
$s = $hh * 3600 || die("need at least hour specified for end time"); |
80 |
$s += $mm * 60 if ($mm); |
81 |
$self->{end} = $s; |
82 |
|
83 |
die("need dayMask specified") if (! $self->{ARGS}->{dayMask}); |
84 |
|
85 |
$self->{dayMask} = $self->{ARGS}->{dayMask}; |
86 |
|
87 |
$self ? return $self : return undef; |
88 |
} |
89 |
|
90 |
|
91 |
|
92 |
# |
93 |
# this sub (originally from Time::Avail) will return if day is applicable |
94 |
# |
95 |
|
96 |
sub _dayOk($$) { |
97 |
|
98 |
my( $dayMask, $day ) = @_; # get parameters |
99 |
|
100 |
my $dayOk = 0; |
101 |
|
102 |
if( ( $day == 0 ) && ( $dayMask & DAY_SUNDAY ) ) { |
103 |
$dayOk = 1; |
104 |
} elsif( ( $day == 1) && ( $dayMask & DAY_MONDAY ) ) { |
105 |
$dayOk = 1; |
106 |
} elsif( ($day == 2) && ( $dayMask & DAY_TUESDAY ) ) { |
107 |
$dayOk = 1; |
108 |
} elsif( ($day == 3) && ( $dayMask & DAY_WEDNESDAY ) ) { |
109 |
$dayOk = 1; |
110 |
} elsif( ( $day == 4) && ( $dayMask & DAY_THURSDAY ) ) { |
111 |
$dayOk = 1; |
112 |
} elsif( ( $day == 5 ) && ( $dayMask & DAY_FRIDAY ) ) { |
113 |
$dayOk = 1; |
114 |
} elsif( ( $day == 6 ) && ( $dayMask & DAY_SATURDAY ) ) { |
115 |
$dayOk = 1; |
116 |
} |
117 |
|
118 |
print STDERR "day: $day dayMask: ",unpack("B32", pack("N", $dayMask))," ok: $dayOk\n" if ($debug); |
119 |
|
120 |
return $dayOk; |
121 |
} |
122 |
|
123 |
|
124 |
# |
125 |
# this will return number of seconds that service is available if passed |
126 |
# uptime of service |
127 |
# |
128 |
|
129 |
sub uptime { |
130 |
my $self = shift; |
131 |
|
132 |
my $time = shift || die "need uptime timestamp to calcualte uptime"; |
133 |
|
134 |
my $s=0; |
135 |
|
136 |
my $start = $self->{start}; |
137 |
my $end = $self->{end}; |
138 |
|
139 |
print STDERR "start: $start end: $end time: $time\n" if ($debug); |
140 |
|
141 |
if( ( $end > $start ) && ( $time < $end ) ) { |
142 |
if ($time < $start) { |
143 |
$s = $end - $start; |
144 |
} else { |
145 |
$s = $end - $time; |
146 |
} |
147 |
} elsif( $start > $end ) { # over midnight |
148 |
if ( $time < $end ) { |
149 |
if ( $time < $start) { |
150 |
$s = SEC_PER_DAY - $start + $end - $time; |
151 |
} else { |
152 |
$s = SEC_PER_DAY - $start + $end; |
153 |
} |
154 |
} else { |
155 |
if ( $time < $start ) { |
156 |
$s = SEC_PER_DAY - $start; |
157 |
} else { |
158 |
$s = SEC_PER_DAY - $time; |
159 |
} |
160 |
} |
161 |
} |
162 |
|
163 |
return $s; |
164 |
} |
165 |
|
166 |
|
167 |
|
168 |
1; |
169 |
__END__ |
170 |
|
171 |
=head1 NAME |
172 |
|
173 |
Time::Available - Perl extension to calculate time availability |
174 |
|
175 |
=head1 SYNOPSIS |
176 |
|
177 |
use Time::Available; |
178 |
|
179 |
# init interval and dayMask |
180 |
my $interval = new( start=>'07:00', stop=>'17:00', |
181 |
dayMask=> Time::Available::DAY_WEEKDAY ); |
182 |
|
183 |
# alternative way to init module using exporting of days |
184 |
use Time::Available qw(:days); |
185 |
my $interval = new( start=>'07:00', stop=>'17:00', |
186 |
dayMask=> DAY_WEEKDAY ); |
187 |
|
188 |
# calculate current availability in seconds |
189 |
print $interval->uptime(localtime); |
190 |
|
191 |
# calculate availablity in seconds from interval of uptime |
192 |
print $interval->interval($utime1,$utime2); |
193 |
|
194 |
=head1 DESCRIPTION |
195 |
|
196 |
Time::Available is used to calculate availability of some resource if start |
197 |
end end time of availability is available. That availability is calculated |
198 |
relative to some interval which is defined when new instance of module is |
199 |
created. |
200 |
|
201 |
Start and end dates must be specified in 24-hour format. You can specify |
202 |
just hour, hour:minute or hour:minute:seconds format. |
203 |
|
204 |
The B<dayMask> parameter is constructed by OR'ing together one or more of |
205 |
the following dayMask constants: |
206 |
|
207 |
=over 4 |
208 |
|
209 |
=item * |
210 |
Time::Avail::DAY_MONDAY |
211 |
|
212 |
=item * |
213 |
Time::Avail::DAY_TUESDAY |
214 |
|
215 |
=item * |
216 |
Time::Avail::DAY_WEDNESDAY |
217 |
|
218 |
=item * |
219 |
Time::Avail::DAY_THURSDAY |
220 |
|
221 |
=item * |
222 |
Time::Avail::DAY_FRIDAY |
223 |
|
224 |
=item * |
225 |
Time::Avail::DAY_SATURDAY |
226 |
|
227 |
=item * |
228 |
Time::Avail::DAY_SUNDAY |
229 |
|
230 |
=item * |
231 |
Time::Avail::DAY_WEEKDAY |
232 |
|
233 |
=item * |
234 |
Time::Avail::DAY_WEEKEND |
235 |
|
236 |
=item * |
237 |
Time::Avail::DAY_EVERYDAY |
238 |
|
239 |
=back |
240 |
|
241 |
FIXME |
242 |
|
243 |
=head2 EXPORT |
244 |
|
245 |
None by default. If you specify B<:days>, Time::Available will export all |
246 |
DAY_* constraints to your enviroment (causing possible pollution of name |
247 |
space). You have been warned. |
248 |
|
249 |
|
250 |
=head1 HISTORY |
251 |
|
252 |
=over 8 |
253 |
|
254 |
=item 0.01 |
255 |
|
256 |
Original version; based somewhat on Time::Avail code |
257 |
|
258 |
=back |
259 |
|
260 |
=head1 BUGS |
261 |
|
262 |
=over 8 |
263 |
|
264 |
=item * |
265 |
Use croak and not die in module for better error handling |
266 |
|
267 |
=item * |
268 |
Allow arbitary (array?) of holidays to be included. |
269 |
|
270 |
=back |
271 |
|
272 |
=head1 SEE ALSO |
273 |
|
274 |
Time::Avail is CPAN module that started it all. However, it lacked |
275 |
calculating of availability of some interval and precision in seconds, so |
276 |
this module was born. |
277 |
|
278 |
More information about this module might be found on |
279 |
http://www.rot13.org/~dpavlin/perl.html#cpan |
280 |
|
281 |
=head1 AUTHOR |
282 |
|
283 |
Dobrica Pavlinusic, E<lt>dpavlin@rot13.orgE<gt> |
284 |
|
285 |
=head1 COPYRIGHT AND LICENSE |
286 |
|
287 |
Copyright (C) 2003 by Dobrica Pavlinusic |
288 |
|
289 |
This library is free software; you can redistribute it and/or modify |
290 |
it under the same terms as Perl itself. |
291 |
|
292 |
=cut |
293 |
|
294 |
|
295 |
1; |