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package Time::Available; |
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|
| 3 |
use 5.001; |
| 4 |
use strict; |
| 5 |
use warnings; |
| 6 |
use Carp; |
| 7 |
use Time::Local; |
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|
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require Exporter; |
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|
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our @ISA = qw(Exporter); |
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|
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our %EXPORT_TAGS = ( |
| 14 |
'days' => [ qw( |
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DAY_MONDAY |
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DAY_TUESDAY |
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DAY_WEDNESDAY |
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DAY_THURSDAY |
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DAY_FRIDAY |
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DAY_SATURDAY |
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DAY_SUNDAY |
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DAY_WEEKDAY |
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DAY_WEEKEND |
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DAY_EVERYDAY |
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) ], |
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'fmt_interval' => [ qw(fmt_interval) ] |
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); |
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|
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our @EXPORT_OK = ( |
| 30 |
@{ $EXPORT_TAGS{'days'} }, |
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@{ $EXPORT_TAGS{'fmt_interval'} } |
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); |
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|
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our @EXPORT; # don't export anything by default! |
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|
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our $VERSION = '0.01'; |
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|
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# define some constants used later |
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use constant DAY_MONDAY => 0x01; |
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use constant DAY_TUESDAY => 0x02; |
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use constant DAY_WEDNESDAY => 0x04; |
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use constant DAY_THURSDAY => 0x08; |
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use constant DAY_FRIDAY => 0x10; |
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use constant DAY_SATURDAY => 0x20; |
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use constant DAY_SUNDAY => 0x40; |
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use constant DAY_WEEKDAY => 0x1F; |
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use constant DAY_WEEKEND => 0x60; |
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use constant DAY_EVERYDAY => 0x7F; |
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|
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use constant SEC_PER_DAY => 86400; |
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|
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my $debug = 0; |
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|
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# |
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# make new instance |
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# |
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sub new { |
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my $class = shift; |
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my $self = {}; |
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bless($self, $class); |
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$self->{ARGS} = {@_}; |
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$debug = $self->{ARGS}->{DEBUG}; |
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|
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croak("need start time") if (! $self->{ARGS}->{start}); |
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|
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# calc start and stop seconds |
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my ($hh,$mm,$ss) = split(/:/,$self->{ARGS}->{start},3); |
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print STDERR "new: start time ",$hh||0,":",$mm||0,":",$ss||0,"\n" if ($debug); |
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croak("need at least hour specified for start time") if (! $hh); |
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$mm |= 0; |
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$ss |= 0; |
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$self->{start_arr} = [$ss,$mm,$hh]; |
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|
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my $start = $hh; |
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$start *= 60; |
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$start += $mm; |
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$start *= 60; |
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$start += $ss; |
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|
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croak("need end time") if (! $self->{ARGS}->{end}); |
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|
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($hh,$mm,$ss) = split(/:/,$self->{ARGS}->{end},3); |
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print STDERR "new: end time ",$hh||0,":",$mm||0,":",$ss||0,"\n" if ($debug); |
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croak("need at least hour specified for end time") if (! $hh); |
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$mm |= 0; |
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$ss |= 0; |
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$self->{end_arr} = [$ss,$mm,$hh]; |
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|
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my $end = $hh; |
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$end *= 60; |
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$end += $mm; |
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$end *= 60; |
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$end += $ss; |
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|
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croak("need dayMask specified") if (! $self->{ARGS}->{dayMask}); |
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|
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$self->{dayMask} = $self->{ARGS}->{dayMask}; |
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|
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# over midnight? |
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if ($start > $end) { |
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$self->{sec_in_interval} = (86400 - $start + $end); |
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} else { |
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$self->{sec_in_interval} = ($end - $start); |
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} |
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$self ? return $self : return undef; |
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} |
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|
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# |
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# this sub (originally from Time::Avail) will return if day is applicable |
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# |
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|
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sub _dayOk($) { |
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my $self = shift; |
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my $day = shift || return; |
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|
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my $dayMask = $self->{dayMask}; |
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|
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my $dayOk = 0; |
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|
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if( ( $day == 0 ) && ( $dayMask & DAY_SUNDAY ) ) { |
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$dayOk = 1; |
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} elsif( ( $day == 1) && ( $dayMask & DAY_MONDAY ) ) { |
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$dayOk = 1; |
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} elsif( ($day == 2) && ( $dayMask & DAY_TUESDAY ) ) { |
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$dayOk = 1; |
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} elsif( ($day == 3) && ( $dayMask & DAY_WEDNESDAY ) ) { |
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$dayOk = 1; |
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} elsif( ( $day == 4) && ( $dayMask & DAY_THURSDAY ) ) { |
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$dayOk = 1; |
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} elsif( ( $day == 5 ) && ( $dayMask & DAY_FRIDAY ) ) { |
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$dayOk = 1; |
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} elsif( ( $day == 6 ) && ( $dayMask & DAY_SATURDAY ) ) { |
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$dayOk = 1; |
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} |
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|
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print STDERR "day: $day dayMask: ",unpack("B32", pack("N", $dayMask))," ok: $dayOk\n" if ($debug); |
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|
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return $dayOk; |
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} |
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|
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# |
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# calculate start and end of interval in given day |
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# |
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|
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sub _start { |
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my $self = shift; |
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my $t = shift || croak "_start needs timestap"; |
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|
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my @lt = localtime($t); |
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$lt[0] = $self->{start_arr}[0]; |
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$lt[1] = $self->{start_arr}[1]; |
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$lt[2] = $self->{start_arr}[2]; |
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return timelocal(@lt); |
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} |
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|
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sub _end { |
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my $self = shift; |
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my $t = shift || croak "_end needs timestap"; |
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|
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my @lt = localtime($t); |
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$lt[0] = $self->{end_arr}[0]; |
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$lt[1] = $self->{end_arr}[1]; |
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$lt[2] = $self->{end_arr}[2]; |
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return timelocal(@lt); |
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} |
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|
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# |
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# this will return number of seconds that service is available if passed |
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# uptime of service |
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# |
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|
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sub uptime { |
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my $self = shift; |
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|
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my $time = shift || croak "need uptime timestamp to calculate uptime"; |
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|
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# calculate offset -- that is number of seconds since midnight |
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my @lt = localtime($time); |
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|
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# check if day falls into dayMask |
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return 0 if (! $self->_dayOk($lt[6]) ); |
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|
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my $s=0; |
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|
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my $start = $self->_start($time); |
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my $end = $self->_end($time); |
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|
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print STDERR "start: $start end: $end time: $time [$lt[2]:$lt[1]:$lt[0]]\n" if ($debug); |
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|
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if ( $end > $start ) { |
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if ($time < $start) { |
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$s = $end - $start; |
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} elsif ($time < $end) { |
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$s = $end - $time; |
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} |
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} elsif ( $start > $end ) { # over midnight |
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if ( $time < $end ) { |
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if ( $time < $start) { |
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$s = SEC_PER_DAY - $start + $end - $time; |
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} else { |
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$s = SEC_PER_DAY - $start + $end; |
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} |
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} else { |
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if ( $time < $start ) { |
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$s = SEC_PER_DAY - $start; |
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} else { |
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$s = SEC_PER_DAY - $time; |
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} |
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} |
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} |
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|
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return $s; |
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} |
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|
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# |
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# this will return number of seconds that service is available if passed |
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# downtime of service |
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# |
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|
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sub downtime { |
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my $self = shift; |
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|
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my $time = shift || croak "need downtime timestamp to calculate uptime"; |
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|
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# calculate offset -- that is number of seconds since midnight |
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my @lt = localtime($time); |
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|
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# check if day falls into dayMask |
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return 0 if (! $self->_dayOk($lt[6]) ); |
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|
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my $s=0; |
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|
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my $start = $self->_start($time); |
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my $end = $self->_end($time); |
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|
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print STDERR "start: $start end: $end time: $time [$lt[2]:$lt[1]:$lt[0]]\n" if ($debug); |
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|
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if ( $end > $start ) { |
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if ($time > $start && $time <= $end) { |
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$s = $end - $time; |
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} elsif ($time < $start) { |
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$s = $end - $start; |
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} |
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} elsif ( $start > $end ) { # over midnight |
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if ( $time < $end ) { |
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if ( $time < $start) { |
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$s = $time; |
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} else { |
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$s = 0; |
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} |
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} else { |
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if ( $time < $start ) { |
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$s = SEC_PER_DAY - $end; |
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} else { |
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$s = SEC_PER_DAY - $end + $start - $time; |
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} |
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} |
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} |
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|
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return $s; |
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} |
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|
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# |
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# this auxillary function will pretty-format interval in [days]d hh:mm:ss |
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# |
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|
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sub fmt_interval { |
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my $int = shift || 0; |
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my $out = ""; |
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|
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my $s=$int; |
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my $d = int($s/(24*60*60)); |
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$s = $s % (24*60*60); |
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my $h = int($s/(60*60)); |
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$s = $s % (60*60); |
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my $m = int($s/60); |
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$s = $s % 60; |
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|
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$out .= $d."d " if ($d > 0); |
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|
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if ($debug) { |
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$out .= sprintf("%02d:%02d:%02d [%d]",$h,$m,$s, $int); |
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} else { |
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$out .= sprintf("%02d:%02d:%02d",$h,$m,$s); |
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} |
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|
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return $out; |
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} |
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|
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# |
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# this function will calculate uptime for some interval |
| 292 |
# |
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|
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sub interval { |
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my $self = shift; |
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my $from = shift || croak "need start time for interval"; |
| 297 |
my $to = shift || croak "need end time for interval"; |
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|
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print STDERR "from:\t$from\t",scalar localtime($from),"\n" if ($debug); |
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print STDERR "to:\t$to\t",scalar localtime($to),"\n" if ($debug); |
| 301 |
|
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my $total = 0; |
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|
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# calc first day availability |
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print STDERR "t:\t$from\t",scalar localtime($from),"\n" if ($debug); |
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$total += $self->uptime($from); |
| 307 |
|
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print STDERR "total: ",fmt_interval($total)," (first)\n" if ($debug); |
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|
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# add all whole days |
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|
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my $sec_in_day = $self->{sec_in_interval}; |
| 313 |
my $day = 86400; # 24*60*60 |
| 314 |
|
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my $loop_start_time = int($from/$day)*$day + $day; |
| 316 |
my $loop_end_time = int($to/$day)*$day; |
| 317 |
|
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print STDERR "loop (start - end): $loop_start_time - $loop_end_time\n" if ($debug); |
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|
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for (my $t = $loop_start_time; $t < $loop_end_time; $t += $day) { |
| 321 |
print STDERR "t:\t$t\t",scalar localtime($t),"\n" if ($debug); |
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$total += $sec_in_day if ($self->day_in_interval($t)); |
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print STDERR "total: ",fmt_interval($total)," (loop)\n" if ($debug); |
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} |
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|
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# add rest of last day |
| 327 |
print STDERR "t:\t$to\t",scalar localtime($to),"\n" if ($debug); |
| 328 |
|
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if ($to > $self->_start($to)) { |
| 330 |
if ($to <= $self->_end($to)) { |
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$total = abs($total - $self->downtime($to)); |
| 332 |
} elsif($self->day_in_interval($to) && $loop_start_time < $loop_end_time) { |
| 333 |
$total += $sec_in_day; |
| 334 |
} |
| 335 |
} else { |
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$total = abs($total - $self->downtime($to)); |
| 337 |
} |
| 338 |
print STDERR "total: ",fmt_interval($total)," (final)\n" if ($debug); |
| 339 |
|
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return $total; |
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} |
| 342 |
|
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# |
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# this function will check if day falls into interval |
| 345 |
# |
| 346 |
|
| 347 |
sub day_in_interval { |
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my $self = shift; |
| 349 |
|
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my $time = shift || croak "need timestamp to check if day is in interval"; |
| 351 |
|
| 352 |
my @lt = localtime($time); |
| 353 |
return $self->_dayOk($lt[6]); |
| 354 |
} |
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|
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# |
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# return seconds in defined interval |
| 358 |
# |
| 359 |
|
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|
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1; |
| 362 |
__END__ |
| 363 |
|
| 364 |
=head1 NAME |
| 365 |
|
| 366 |
Time::Available - Perl extension to calculate time availability |
| 367 |
|
| 368 |
=head1 SYNOPSIS |
| 369 |
|
| 370 |
use Time::Available; |
| 371 |
|
| 372 |
# init interval and dayMask |
| 373 |
my $interval = new( start=>'07:00', stop=>'17:00', |
| 374 |
dayMask=> Time::Available::DAY_WEEKDAY ); |
| 375 |
|
| 376 |
# alternative way to init module using exporting of days |
| 377 |
use Time::Available qw(:days); |
| 378 |
my $interval = new( start=>'07:00', stop=>'17:00', |
| 379 |
dayMask=> DAY_WEEKDAY ); |
| 380 |
|
| 381 |
# calculate current availability in seconds |
| 382 |
print $interval->uptime(localtime); |
| 383 |
|
| 384 |
# calculate availablity in seconds from interval of uptime |
| 385 |
print $interval->interval($utime1,$utime2); |
| 386 |
|
| 387 |
# pretty print interval data (this will produce output '1d 11:11:11') |
| 388 |
use Time::Available qw(:fmt_interval); |
| 389 |
print fmt_interval(126671); |
| 390 |
|
| 391 |
=head1 DESCRIPTION |
| 392 |
|
| 393 |
Time::Available is used to calculate availability of some resource if start |
| 394 |
end end time of availability is available. That availability is calculated |
| 395 |
relative to some interval which is defined when new instance of module is |
| 396 |
created. |
| 397 |
|
| 398 |
Start and end dates must be specified in 24-hour format. You can specify |
| 399 |
just hour, hour:minute or hour:minute:seconds format. |
| 400 |
|
| 401 |
The B<dayMask> parameter is constructed by OR'ing together one or more of |
| 402 |
the following dayMask constants: |
| 403 |
|
| 404 |
=over 4 |
| 405 |
|
| 406 |
=item * |
| 407 |
Time::Available::DAY_MONDAY |
| 408 |
|
| 409 |
=item * |
| 410 |
Time::Available::DAY_TUESDAY |
| 411 |
|
| 412 |
=item * |
| 413 |
Time::Available::DAY_WEDNESDAY |
| 414 |
|
| 415 |
=item * |
| 416 |
Time::Available::DAY_THURSDAY |
| 417 |
|
| 418 |
=item * |
| 419 |
Time::Available::DAY_FRIDAY |
| 420 |
|
| 421 |
=item * |
| 422 |
Time::Available::DAY_SATURDAY |
| 423 |
|
| 424 |
=item * |
| 425 |
Time::Available::DAY_SUNDAY |
| 426 |
|
| 427 |
=item * |
| 428 |
Time::Available::DAY_WEEKDAY |
| 429 |
|
| 430 |
=item * |
| 431 |
Time::Available::DAY_WEEKEND |
| 432 |
|
| 433 |
=item * |
| 434 |
Time::Available::DAY_EVERYDAY |
| 435 |
|
| 436 |
=back |
| 437 |
|
| 438 |
FIXME |
| 439 |
|
| 440 |
=head2 EXPORT |
| 441 |
|
| 442 |
None by default. |
| 443 |
|
| 444 |
If you specify B<:days>, Time::Available will export all |
| 445 |
DAY_* constraints to your enviroment (causing possible pollution of name |
| 446 |
space). You have been warned. |
| 447 |
|
| 448 |
With B<:fmt_interval> it will include function B<fmt_interval> which will |
| 449 |
pretty-format interval into [days]d hh:mm:ss. |
| 450 |
|
| 451 |
|
| 452 |
=head1 HISTORY |
| 453 |
|
| 454 |
=over 8 |
| 455 |
|
| 456 |
=item 0.01 |
| 457 |
|
| 458 |
Original version; based somewhat on Time::Avail code |
| 459 |
|
| 460 |
=back |
| 461 |
|
| 462 |
=head1 BUGS |
| 463 |
|
| 464 |
=over 8 |
| 465 |
|
| 466 |
=item * |
| 467 |
Allow arbitary (array?) of holidays to be included. |
| 468 |
|
| 469 |
=back |
| 470 |
|
| 471 |
=head1 SEE ALSO |
| 472 |
|
| 473 |
Time::Avail is CPAN module that started it all. However, it lacked |
| 474 |
calculating of availability of some interval and precision in seconds, so |
| 475 |
this module was born. |
| 476 |
|
| 477 |
More information about this module might be found on |
| 478 |
http://www.rot13.org/~dpavlin/projects.html#cpan |
| 479 |
|
| 480 |
=head1 AUTHOR |
| 481 |
|
| 482 |
Dobrica Pavlinusic, E<lt>dpavlin@rot13.orgE<gt> |
| 483 |
|
| 484 |
=head1 COPYRIGHT AND LICENSE |
| 485 |
|
| 486 |
Copyright (C) 2003 by Dobrica Pavlinusic |
| 487 |
|
| 488 |
This library is free software; you can redistribute it and/or modify |
| 489 |
it under the same terms as Perl itself. |
| 490 |
|
| 491 |
=cut |
| 492 |
|
| 493 |
|
| 494 |
1; |
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