| 1 |
package WebPAC::Common; |
| 2 |
|
| 3 |
use warnings; |
| 4 |
use strict; |
| 5 |
|
| 6 |
use Log::Log4perl qw/get_logger :levels/; |
| 7 |
use Time::HiRes qw/time/; |
| 8 |
|
| 9 |
=head1 NAME |
| 10 |
|
| 11 |
WebPAC::Common - internal methods called from other WebPAC modules |
| 12 |
|
| 13 |
=head1 VERSION |
| 14 |
|
| 15 |
Version 0.01 |
| 16 |
|
| 17 |
=cut |
| 18 |
|
| 19 |
our $VERSION = '0.01'; |
| 20 |
|
| 21 |
=head1 SYNOPSYS |
| 22 |
|
| 23 |
This module defines common functions, and is used as base for other, more |
| 24 |
specific modules. |
| 25 |
|
| 26 |
=head1 FUNCTIONS |
| 27 |
|
| 28 |
=head2 progress_bar |
| 29 |
|
| 30 |
Draw progress bar on STDERR. |
| 31 |
|
| 32 |
$webpac->progress_bar($current, $max); |
| 33 |
|
| 34 |
=cut |
| 35 |
|
| 36 |
sub progress_bar { |
| 37 |
my $self = shift; |
| 38 |
|
| 39 |
my ($curr,$max) = @_; |
| 40 |
|
| 41 |
my $log = $self->_get_logger(); |
| 42 |
|
| 43 |
$log->logconfess("no current value!") if (! $curr); |
| 44 |
$log->logconfess("no maximum value!") if (! $max); |
| 45 |
|
| 46 |
if ($curr > $max) { |
| 47 |
$max = $curr; |
| 48 |
$log->debug("overflow to $curr"); |
| 49 |
} |
| 50 |
|
| 51 |
$self->{'last_pcnt'} ||= 1; |
| 52 |
$self->{'start_t'} ||= time(); |
| 53 |
|
| 54 |
my $p = int($curr * 100 / $max) || 1; |
| 55 |
|
| 56 |
# reset on re-run |
| 57 |
if ($p < $self->{'last_pcnt'}) { |
| 58 |
$self->{'last_pcnt'} = $p; |
| 59 |
$self->{'start_t'} = time(); |
| 60 |
} |
| 61 |
|
| 62 |
if ($p != $self->{'last_pcnt'}) { |
| 63 |
|
| 64 |
my $t = time(); |
| 65 |
my $rate = ($curr / ($t - $self->{'start_t'} || 1)); |
| 66 |
my $eta = ($max-$curr) / ($rate || 1); |
| 67 |
printf STDERR ("%5d [%-38s] %-5d %0.1f/s %s\r",$curr,"=" x ($p/3)."$p%>", $max, $rate, $self->fmt_time($eta)); |
| 68 |
$self->{'last_pcnt'} = $p; |
| 69 |
$self->{'last_curr'} = $curr; |
| 70 |
} |
| 71 |
print STDERR "\n" if ($p == 100); |
| 72 |
} |
| 73 |
|
| 74 |
=head2 fmt_time |
| 75 |
|
| 76 |
Format time (in seconds) for display. |
| 77 |
|
| 78 |
print $webpac->fmt_time(time()); |
| 79 |
|
| 80 |
This method is called by L<progress_bar> to display remaining time. |
| 81 |
|
| 82 |
=cut |
| 83 |
|
| 84 |
sub fmt_time { |
| 85 |
my $self = shift; |
| 86 |
|
| 87 |
my $t = shift || 0; |
| 88 |
my $out = ""; |
| 89 |
|
| 90 |
my ($ss,$mm,$hh) = gmtime($t); |
| 91 |
$out .= "${hh}h" if ($hh); |
| 92 |
$out .= sprintf("%02d:%02d", $mm,$ss); |
| 93 |
$out .= " " if ($hh == 0); |
| 94 |
return $out; |
| 95 |
} |
| 96 |
|
| 97 |
# |
| 98 |
# |
| 99 |
# |
| 100 |
|
| 101 |
=head1 INTERNAL METHODS |
| 102 |
|
| 103 |
Here is a quick list of internal methods, mostly useful to turn debugging |
| 104 |
on them (see L<LOGGING> below for explanation). |
| 105 |
|
| 106 |
=cut |
| 107 |
|
| 108 |
=head2 _eval |
| 109 |
|
| 110 |
Internal function to eval code without C<strict 'subs'>. |
| 111 |
|
| 112 |
=cut |
| 113 |
|
| 114 |
sub _eval { |
| 115 |
my $self = shift; |
| 116 |
|
| 117 |
my $code = shift || return; |
| 118 |
|
| 119 |
my $log = $self->_get_logger(); |
| 120 |
|
| 121 |
no strict 'subs'; |
| 122 |
my $ret = eval $code; |
| 123 |
if ($@) { |
| 124 |
$log->error("problem with eval code [$code]: $@"); |
| 125 |
} |
| 126 |
|
| 127 |
$log->debug("eval: ",$code," [",$ret,"]"); |
| 128 |
|
| 129 |
return $ret || undef; |
| 130 |
} |
| 131 |
|
| 132 |
=head2 _init_logger |
| 133 |
|
| 134 |
This function will init C<Log::Log4perl> using provided configuration file. |
| 135 |
|
| 136 |
$webpac->_init_logger('/path/to/log.conf'); |
| 137 |
|
| 138 |
If no path to configuration file is given, dummy empty configuration |
| 139 |
will be created. If any mode which inherits from this one is called |
| 140 |
with C<debug> flag, it will turn logging to debug level. |
| 141 |
|
| 142 |
=cut |
| 143 |
|
| 144 |
sub _init_logger { |
| 145 |
my $self = shift; |
| 146 |
my $file = shift; |
| 147 |
if ($file) { |
| 148 |
Log::Log4perl->init($file); |
| 149 |
} else { |
| 150 |
my $conf = q( ); |
| 151 |
if ($self->{'debug'}) { |
| 152 |
$conf = << '_log4perl_'; |
| 153 |
|
| 154 |
log4perl.rootLogger=INFO, SCREEN |
| 155 |
|
| 156 |
log4perl.logger.WebPAC.=DEBUG |
| 157 |
|
| 158 |
log4perl.appender.SCREEN=Log::Log4perl::Appender::Screen |
| 159 |
log4perl.appender.SCREEN.layout=PatternLayout |
| 160 |
log4perl.appender.SCREEN.layout.ConversionPattern=%d %p> %F{1}:%L %M - %m%n |
| 161 |
|
| 162 |
_log4perl_ |
| 163 |
} |
| 164 |
Log::Log4perl->init( \$conf ); |
| 165 |
} |
| 166 |
} |
| 167 |
|
| 168 |
|
| 169 |
=head2 _get_logger |
| 170 |
|
| 171 |
Get C<Log::Log4perl> object with a twist: domains are defined for each |
| 172 |
method |
| 173 |
|
| 174 |
my $log = $webpac->_get_logger(); |
| 175 |
|
| 176 |
=cut |
| 177 |
|
| 178 |
sub _get_logger { |
| 179 |
my $self = shift; |
| 180 |
|
| 181 |
$self->{'_logger_ok'} ||= $self->_init_logger; |
| 182 |
|
| 183 |
my $name = (caller(1))[3] || caller; |
| 184 |
return get_logger($name); |
| 185 |
} |
| 186 |
|
| 187 |
|
| 188 |
=head1 LOGGING |
| 189 |
|
| 190 |
Logging in WebPAC is performed by L<Log::Log4perl> with config file |
| 191 |
C<log.conf>. |
| 192 |
|
| 193 |
Methods defined above have different levels of logging, so |
| 194 |
it's descriptions will be useful to turn (mostry B<debug> logging) on |
| 195 |
or off to see why WabPAC isn't perforing as you expect it (it might even |
| 196 |
be a bug!). |
| 197 |
|
| 198 |
B<This is different from normal Log4perl behaviour>. To repeat, you can |
| 199 |
also use method names, and not only classes (which are just few) |
| 200 |
to filter logging. |
| 201 |
|
| 202 |
|
Parent Directory
| 
Revision Log