| 1 |
package Time::Available; |
| 2 |
|
| 3 |
use 5.001; |
| 4 |
use strict; |
| 5 |
use warnings; |
| 6 |
use Carp; |
| 7 |
|
| 8 |
require Exporter; |
| 9 |
|
| 10 |
our @ISA = qw(Exporter); |
| 11 |
|
| 12 |
our %EXPORT_TAGS = ( |
| 13 |
'days' => [ qw( |
| 14 |
DAY_MONDAY |
| 15 |
DAY_TUESDAY |
| 16 |
DAY_WEDNESDAY |
| 17 |
DAY_THURSDAY |
| 18 |
DAY_FRIDAY |
| 19 |
DAY_SATURDAY |
| 20 |
DAY_SUNDAY |
| 21 |
DAY_WEEKDAY |
| 22 |
DAY_WEEKEND |
| 23 |
DAY_EVERYDAY |
| 24 |
) ], |
| 25 |
'fmt_interval' => [ qw(fmt_interval) ] |
| 26 |
); |
| 27 |
|
| 28 |
our @EXPORT_OK = ( |
| 29 |
@{ $EXPORT_TAGS{'days'} }, |
| 30 |
@{ $EXPORT_TAGS{'fmt_interval'} } |
| 31 |
); |
| 32 |
|
| 33 |
our @EXPORT; # don't export anything by default! |
| 34 |
|
| 35 |
our $VERSION = '0.01'; |
| 36 |
|
| 37 |
# define some constants used later |
| 38 |
use constant DAY_MONDAY => 0x01; |
| 39 |
use constant DAY_TUESDAY => 0x02; |
| 40 |
use constant DAY_WEDNESDAY => 0x04; |
| 41 |
use constant DAY_THURSDAY => 0x08; |
| 42 |
use constant DAY_FRIDAY => 0x10; |
| 43 |
use constant DAY_SATURDAY => 0x20; |
| 44 |
use constant DAY_SUNDAY => 0x40; |
| 45 |
use constant DAY_WEEKDAY => 0x1F; |
| 46 |
use constant DAY_WEEKEND => 0x60; |
| 47 |
use constant DAY_EVERYDAY => 0x7F; |
| 48 |
|
| 49 |
use constant SEC_PER_DAY => 86400; |
| 50 |
|
| 51 |
my $debug = 0; |
| 52 |
|
| 53 |
# |
| 54 |
# make new instance |
| 55 |
# |
| 56 |
sub new { |
| 57 |
my $class = shift; |
| 58 |
my $self = {}; |
| 59 |
bless($self, $class); |
| 60 |
$self->{ARGS} = {@_}; |
| 61 |
$debug = $self->{ARGS}->{DEBUG}; |
| 62 |
|
| 63 |
croak("need start time") if (! $self->{ARGS}->{start}); |
| 64 |
|
| 65 |
# calc start and stop seconds |
| 66 |
my ($hh,$mm,$ss) = split(/:/,$self->{ARGS}->{start},3); |
| 67 |
print STDERR "new: start time ",$hh||0,":",$mm||0,":",$ss||0,"\n" if ($debug); |
| 68 |
my $s = $hh * 3600 || croak("need at least hour specified for start time"); |
| 69 |
$s += $mm * 60 if ($mm); |
| 70 |
$s += $ss if ($ss); |
| 71 |
$self->{start} = $s; |
| 72 |
|
| 73 |
croak("need end time") if (! $self->{ARGS}->{end}); |
| 74 |
|
| 75 |
($hh,$mm,$ss) = split(/:/,$self->{ARGS}->{end},3); |
| 76 |
print STDERR "new: end time ",$hh||0,":",$mm||0,":",$ss||0,"\n" if ($debug); |
| 77 |
$s = $hh * 3600 || croak("need at least hour specified for end time"); |
| 78 |
$s += $mm * 60 if ($mm); |
| 79 |
$self->{end} = $s; |
| 80 |
|
| 81 |
croak("need dayMask specified") if (! $self->{ARGS}->{dayMask}); |
| 82 |
|
| 83 |
$self->{dayMask} = $self->{ARGS}->{dayMask}; |
| 84 |
|
| 85 |
$self ? return $self : return undef; |
| 86 |
} |
| 87 |
|
| 88 |
|
| 89 |
|
| 90 |
# |
| 91 |
# this sub (originally from Time::Avail) will return if day is applicable |
| 92 |
# |
| 93 |
|
| 94 |
sub _dayOk($) { |
| 95 |
my $self = shift; |
| 96 |
my $day = shift || return; |
| 97 |
|
| 98 |
my $dayMask = $self->{dayMask}; |
| 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 $time = shift || croak "need uptime timestamp to calculate uptime"; |
| 133 |
|
| 134 |
# calculate offset -- that is number of seconds since midnight |
| 135 |
my @lt = gmtime($time); |
| 136 |
|
| 137 |
# check if day falls into dayMask |
| 138 |
return 0 if (! $self->_dayOk($lt[6]) ); |
| 139 |
|
| 140 |
my $offset = $lt[2]; # hour |
| 141 |
$offset *= 60; # convert to minutes |
| 142 |
$offset += $lt[1]; # minutes |
| 143 |
$offset *= 60; # convert to seconds |
| 144 |
$offset += $lt[0]; |
| 145 |
|
| 146 |
my $s=0; |
| 147 |
|
| 148 |
my $start = $self->{start}; |
| 149 |
my $end = $self->{end}; |
| 150 |
|
| 151 |
print STDERR "start: $start end: $end time: $offset [$lt[2]:$lt[1]:$lt[0]]\n" if ($debug); |
| 152 |
|
| 153 |
if ( $end > $start ) { |
| 154 |
if ($offset < $start) { |
| 155 |
$s = $end - $start; |
| 156 |
} elsif ($offset < $end) { |
| 157 |
$s = $end - $offset; |
| 158 |
} |
| 159 |
} elsif ( $start > $end ) { # over midnight |
| 160 |
if ( $offset < $end ) { |
| 161 |
if ( $offset < $start) { |
| 162 |
$s = SEC_PER_DAY - $start + $end - $offset; |
| 163 |
} else { |
| 164 |
$s = SEC_PER_DAY - $start + $end; |
| 165 |
} |
| 166 |
} else { |
| 167 |
if ( $offset < $start ) { |
| 168 |
$s = SEC_PER_DAY - $start; |
| 169 |
} else { |
| 170 |
$s = SEC_PER_DAY - $offset; |
| 171 |
} |
| 172 |
} |
| 173 |
} |
| 174 |
|
| 175 |
return $s; |
| 176 |
} |
| 177 |
|
| 178 |
# |
| 179 |
# this will return number of seconds that service is available if passed |
| 180 |
# downtime of service |
| 181 |
# |
| 182 |
|
| 183 |
sub downtime { |
| 184 |
my $self = shift; |
| 185 |
|
| 186 |
my $time = shift || croak "need downtime timestamp to calculate uptime"; |
| 187 |
|
| 188 |
# calculate offset -- that is number of seconds since midnight |
| 189 |
my @lt = gmtime($time); |
| 190 |
|
| 191 |
# check if day falls into dayMask |
| 192 |
return 0 if (! $self->_dayOk($lt[6]) ); |
| 193 |
|
| 194 |
my $offset = $lt[2]; # hour |
| 195 |
$offset *= 60; # convert to minutes |
| 196 |
$offset += $lt[1]; # minutes |
| 197 |
$offset *= 60; # convert to seconds |
| 198 |
$offset += $lt[0]; |
| 199 |
|
| 200 |
my $s=0; |
| 201 |
|
| 202 |
my $start = $self->{start}; |
| 203 |
my $end = $self->{end}; |
| 204 |
|
| 205 |
print STDERR "start: $start end: $end time: $offset [$lt[2]:$lt[1]:$lt[0]]\n" if ($debug); |
| 206 |
|
| 207 |
if ( $end > $start ) { |
| 208 |
if ($offset > $start && $offset <= $end) { |
| 209 |
$s = $end - $offset; |
| 210 |
} elsif ($offset < $start) { |
| 211 |
$s = $end - $start; |
| 212 |
} |
| 213 |
} elsif ( $start > $end ) { # over midnight |
| 214 |
if ( $offset < $end ) { |
| 215 |
if ( $offset < $start) { |
| 216 |
$s = $offset; |
| 217 |
} else { |
| 218 |
$s = 0; |
| 219 |
} |
| 220 |
} else { |
| 221 |
if ( $offset < $start ) { |
| 222 |
$s = SEC_PER_DAY - $end; |
| 223 |
} else { |
| 224 |
$s = SEC_PER_DAY - $end + $start - $offset; |
| 225 |
} |
| 226 |
} |
| 227 |
} |
| 228 |
|
| 229 |
return $s; |
| 230 |
} |
| 231 |
|
| 232 |
# |
| 233 |
# this auxillary function will pretty-format interval in [days]d hh:mm:ss |
| 234 |
# |
| 235 |
|
| 236 |
sub fmt_interval { |
| 237 |
my $s = shift || 0; |
| 238 |
my $out = ""; |
| 239 |
|
| 240 |
my $d = int($s/(24*60*60)); |
| 241 |
$s = $s % (24*60*60); |
| 242 |
my $h = int($s/(60*60)); |
| 243 |
$s = $s % (60*60); |
| 244 |
my $m = int($s/60); |
| 245 |
$s = $s % 60; |
| 246 |
|
| 247 |
$out .= $d."d " if ($d > 0); |
| 248 |
|
| 249 |
$out .= sprintf("%02d:%02d:%02d",$h,$m,$s); |
| 250 |
|
| 251 |
return $out; |
| 252 |
} |
| 253 |
|
| 254 |
# |
| 255 |
# this function will calculate uptime for some interval |
| 256 |
# |
| 257 |
|
| 258 |
sub interval { |
| 259 |
my $self = shift; |
| 260 |
my $from = shift || croak "need start time for interval"; |
| 261 |
my $to = shift || croak "need end time for interval"; |
| 262 |
|
| 263 |
print STDERR "from:\t$from\t",scalar gmtime($from),"\n" if ($debug); |
| 264 |
print STDERR "to:\t$to\t",scalar gmtime($to),"\n" if ($debug); |
| 265 |
|
| 266 |
my $total = 0; |
| 267 |
|
| 268 |
# calc first day availability |
| 269 |
print STDERR "t:\t$from\t",scalar gmtime($from),"\n" if ($debug); |
| 270 |
$total += $self->uptime($from); |
| 271 |
|
| 272 |
print STDERR "total: $total (first)\n" if ($debug); |
| 273 |
|
| 274 |
# add all whole days |
| 275 |
|
| 276 |
my $sec_in_day = $self->sec_in_interval; |
| 277 |
my $day = 86400; # 24*60*60 |
| 278 |
|
| 279 |
my $loop_start_time = int($from/$day)*$day + $day; |
| 280 |
my $loop_end_time = int($to/$day)*$day - $day; |
| 281 |
|
| 282 |
print STDERR "loop (start - end): $loop_start_time - $loop_end_time\n" if ($debug); |
| 283 |
|
| 284 |
for (my $t = $loop_start_time; $t <= $loop_end_time; $t += $day) { |
| 285 |
print STDERR "t:\t$t\t",scalar gmtime($t),"\n" if ($debug); |
| 286 |
$total += $sec_in_day if ($self->day_in_interval($t)); |
| 287 |
print STDERR "total: $total (loop)\n" if ($debug); |
| 288 |
} |
| 289 |
|
| 290 |
# add rest of last day |
| 291 |
print STDERR "t:\t$to\t",scalar gmtime($to),"\n" if ($debug); |
| 292 |
|
| 293 |
$total = abs($total - $self->downtime($to)); |
| 294 |
print STDERR "total: $total (final)\n" if ($debug); |
| 295 |
|
| 296 |
return $total; |
| 297 |
} |
| 298 |
|
| 299 |
# |
| 300 |
# this function will check if day falls into interval |
| 301 |
# |
| 302 |
|
| 303 |
sub day_in_interval { |
| 304 |
my $self = shift; |
| 305 |
|
| 306 |
my $time = shift || croak "need timestamp to check if day is in interval"; |
| 307 |
|
| 308 |
my @lt = gmtime($time); |
| 309 |
return $self->_dayOk($lt[6]); |
| 310 |
} |
| 311 |
|
| 312 |
# |
| 313 |
# return seconds in defined interval |
| 314 |
# |
| 315 |
|
| 316 |
sub sec_in_interval { |
| 317 |
my $self = shift; |
| 318 |
|
| 319 |
# over midnight? |
| 320 |
if ($self->{start} > $self->{end}) { |
| 321 |
return(86400 - $self->{start} + $self->{end}); |
| 322 |
} else { |
| 323 |
return($self->{end} - $self->{start}); |
| 324 |
} |
| 325 |
} |
| 326 |
|
| 327 |
1; |
| 328 |
__END__ |
| 329 |
|
| 330 |
=head1 NAME |
| 331 |
|
| 332 |
Time::Available - Perl extension to calculate time availability |
| 333 |
|
| 334 |
=head1 SYNOPSIS |
| 335 |
|
| 336 |
use Time::Available; |
| 337 |
|
| 338 |
# init interval and dayMask |
| 339 |
my $interval = new( start=>'07:00', stop=>'17:00', |
| 340 |
dayMask=> Time::Available::DAY_WEEKDAY ); |
| 341 |
|
| 342 |
# alternative way to init module using exporting of days |
| 343 |
use Time::Available qw(:days); |
| 344 |
my $interval = new( start=>'07:00', stop=>'17:00', |
| 345 |
dayMask=> DAY_WEEKDAY ); |
| 346 |
|
| 347 |
# calculate current availability in seconds |
| 348 |
print $interval->uptime(localtime); |
| 349 |
|
| 350 |
# calculate availablity in seconds from interval of uptime |
| 351 |
print $interval->interval($utime1,$utime2); |
| 352 |
|
| 353 |
# pretty print interval data (this will produce output '1d 11:11:11') |
| 354 |
use Time::Available qw(:fmt_interval); |
| 355 |
print fmt_interval(126671); |
| 356 |
|
| 357 |
=head1 DESCRIPTION |
| 358 |
|
| 359 |
Time::Available is used to calculate availability of some resource if start |
| 360 |
end end time of availability is available. That availability is calculated |
| 361 |
relative to some interval which is defined when new instance of module is |
| 362 |
created. |
| 363 |
|
| 364 |
Start and end dates must be specified in 24-hour format. You can specify |
| 365 |
just hour, hour:minute or hour:minute:seconds format. |
| 366 |
|
| 367 |
The B<dayMask> parameter is constructed by OR'ing together one or more of |
| 368 |
the following dayMask constants: |
| 369 |
|
| 370 |
=over 4 |
| 371 |
|
| 372 |
=item * |
| 373 |
Time::Available::DAY_MONDAY |
| 374 |
|
| 375 |
=item * |
| 376 |
Time::Available::DAY_TUESDAY |
| 377 |
|
| 378 |
=item * |
| 379 |
Time::Available::DAY_WEDNESDAY |
| 380 |
|
| 381 |
=item * |
| 382 |
Time::Available::DAY_THURSDAY |
| 383 |
|
| 384 |
=item * |
| 385 |
Time::Available::DAY_FRIDAY |
| 386 |
|
| 387 |
=item * |
| 388 |
Time::Available::DAY_SATURDAY |
| 389 |
|
| 390 |
=item * |
| 391 |
Time::Available::DAY_SUNDAY |
| 392 |
|
| 393 |
=item * |
| 394 |
Time::Available::DAY_WEEKDAY |
| 395 |
|
| 396 |
=item * |
| 397 |
Time::Available::DAY_WEEKEND |
| 398 |
|
| 399 |
=item * |
| 400 |
Time::Available::DAY_EVERYDAY |
| 401 |
|
| 402 |
=back |
| 403 |
|
| 404 |
FIXME |
| 405 |
|
| 406 |
=head2 EXPORT |
| 407 |
|
| 408 |
None by default. |
| 409 |
|
| 410 |
If you specify B<:days>, Time::Available will export all |
| 411 |
DAY_* constraints to your enviroment (causing possible pollution of name |
| 412 |
space). You have been warned. |
| 413 |
|
| 414 |
With B<:fmt_interval> it will include function B<fmt_interval> which will |
| 415 |
pretty-format interval into [days]d hh:mm:ss. |
| 416 |
|
| 417 |
|
| 418 |
=head1 HISTORY |
| 419 |
|
| 420 |
=over 8 |
| 421 |
|
| 422 |
=item 0.01 |
| 423 |
|
| 424 |
Original version; based somewhat on Time::Avail code |
| 425 |
|
| 426 |
=back |
| 427 |
|
| 428 |
=head1 BUGS |
| 429 |
|
| 430 |
=over 8 |
| 431 |
|
| 432 |
=item * |
| 433 |
Allow arbitary (array?) of holidays to be included. |
| 434 |
|
| 435 |
=back |
| 436 |
|
| 437 |
=head1 SEE ALSO |
| 438 |
|
| 439 |
Time::Avail is CPAN module that started it all. However, it lacked |
| 440 |
calculating of availability of some interval and precision in seconds, so |
| 441 |
this module was born. |
| 442 |
|
| 443 |
More information about this module might be found on |
| 444 |
http://www.rot13.org/~dpavlin/projects.html#cpan |
| 445 |
|
| 446 |
=head1 AUTHOR |
| 447 |
|
| 448 |
Dobrica Pavlinusic, E<lt>dpavlin@rot13.orgE<gt> |
| 449 |
|
| 450 |
=head1 COPYRIGHT AND LICENSE |
| 451 |
|
| 452 |
Copyright (C) 2003 by Dobrica Pavlinusic |
| 453 |
|
| 454 |
This library is free software; you can redistribute it and/or modify |
| 455 |
it under the same terms as Perl itself. |
| 456 |
|
| 457 |
=cut |
| 458 |
|
| 459 |
|
| 460 |
1; |
Parent Directory
| 
Revision Log