| 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 |
# If ture, enable logging debug |
| 10 |
my $log_debug = 0; |
| 11 |
|
| 12 |
=head1 NAME |
| 13 |
|
| 14 |
WebPAC::Common - internal methods called from other WebPAC modules |
| 15 |
|
| 16 |
=head1 VERSION |
| 17 |
|
| 18 |
Version 0.01 |
| 19 |
|
| 20 |
=cut |
| 21 |
|
| 22 |
our $VERSION = '0.01'; |
| 23 |
|
| 24 |
=head1 SYNOPSYS |
| 25 |
|
| 26 |
This module defines common functions, and is used as base for other, more |
| 27 |
specific modules. |
| 28 |
|
| 29 |
=head1 FUNCTIONS |
| 30 |
|
| 31 |
=head2 progress_bar |
| 32 |
|
| 33 |
Draw progress bar on STDERR. |
| 34 |
|
| 35 |
$webpac->progress_bar($current, $max); |
| 36 |
|
| 37 |
=cut |
| 38 |
|
| 39 |
sub progress_bar { |
| 40 |
my $self = shift; |
| 41 |
|
| 42 |
my ($curr,$max) = @_; |
| 43 |
|
| 44 |
my $log = $self->_get_logger(); |
| 45 |
|
| 46 |
$log->logconfess("no current value!") if (! $curr); |
| 47 |
$log->logconfess("no maximum value!") if (! $max); |
| 48 |
|
| 49 |
if ($curr > $max) { |
| 50 |
$max = $curr; |
| 51 |
$log->debug("overflow to $curr"); |
| 52 |
} |
| 53 |
|
| 54 |
$self->{'last_pcnt'} ||= 1; |
| 55 |
$self->{'start_t'} ||= time(); |
| 56 |
|
| 57 |
my $p = int($curr * 100 / $max) || 1; |
| 58 |
|
| 59 |
# reset on re-run |
| 60 |
if ($p < $self->{'last_pcnt'}) { |
| 61 |
$self->{'last_pcnt'} = $p; |
| 62 |
$self->{'start_t'} = time(); |
| 63 |
} |
| 64 |
|
| 65 |
if ($p != $self->{'last_pcnt'}) { |
| 66 |
|
| 67 |
my $t = time(); |
| 68 |
my $rate = ($curr / ($t - $self->{'start_t'} || 1)); |
| 69 |
my $eta = ($max-$curr) / ($rate || 1); |
| 70 |
printf STDERR ("%5d [%-38s] %-5d %0.1f/s %s\r",$curr,"=" x ($p/3)."$p%>", $max, $rate, $self->fmt_time($eta)); |
| 71 |
$self->{'last_pcnt'} = $p; |
| 72 |
$self->{'last_curr'} = $curr; |
| 73 |
} |
| 74 |
print STDERR "\n" if ($p == 100); |
| 75 |
} |
| 76 |
|
| 77 |
=head2 fmt_time |
| 78 |
|
| 79 |
Format time (in seconds) for display. |
| 80 |
|
| 81 |
print $webpac->fmt_time(time()); |
| 82 |
|
| 83 |
This method is called by L<progress_bar> to display remaining time. |
| 84 |
|
| 85 |
=cut |
| 86 |
|
| 87 |
sub fmt_time { |
| 88 |
my $self = shift; |
| 89 |
|
| 90 |
my $t = shift || 0; |
| 91 |
my $out = ""; |
| 92 |
|
| 93 |
my ($ss,$mm,$hh) = gmtime($t); |
| 94 |
$out .= "${hh}h" if ($hh); |
| 95 |
$out .= sprintf("%02d:%02d", $mm,$ss); |
| 96 |
$out .= " " if ($hh == 0); |
| 97 |
return $out; |
| 98 |
} |
| 99 |
|
| 100 |
# |
| 101 |
# |
| 102 |
# |
| 103 |
|
| 104 |
=head1 INTERNAL METHODS |
| 105 |
|
| 106 |
Here is a quick list of internal methods, mostly useful to turn debugging |
| 107 |
on them (see L<LOGGING> below for explanation). |
| 108 |
|
| 109 |
=cut |
| 110 |
|
| 111 |
=head2 _eval |
| 112 |
|
| 113 |
Internal function to eval code without C<strict 'subs'>. |
| 114 |
|
| 115 |
=cut |
| 116 |
|
| 117 |
sub _eval { |
| 118 |
my $self = shift; |
| 119 |
|
| 120 |
my $code = shift || return; |
| 121 |
|
| 122 |
my $log = $self->_get_logger(); |
| 123 |
|
| 124 |
no strict 'subs'; |
| 125 |
my $ret = eval $code; |
| 126 |
if ($@) { |
| 127 |
$log->error("problem with eval code [$code]: $@"); |
| 128 |
} |
| 129 |
|
| 130 |
$log->debug("eval: ",$code," [",$ret,"]"); |
| 131 |
|
| 132 |
return $ret || undef; |
| 133 |
} |
| 134 |
|
| 135 |
=head2 _init_logger |
| 136 |
|
| 137 |
This function will init C<Log::Log4perl> using provided configuration file. |
| 138 |
|
| 139 |
$webpac->_init_logger('/path/to/log.conf'); |
| 140 |
|
| 141 |
If no path to configuration file is given, dummy empty configuration |
| 142 |
will be created. If any mode which inherits from this one is called |
| 143 |
with C<debug> flag, it will turn logging to debug level. |
| 144 |
|
| 145 |
This function will also read C<log_conf> value from current object and try |
| 146 |
to read that as configuration file if it exists, if it doesn't it will |
| 147 |
fallback to default C<conf/log.conf>. |
| 148 |
|
| 149 |
You can disable all logging by adding C<no_log> to constructor of WebPAC |
| 150 |
object. Object in C<Test::Exception> class will disable logging |
| 151 |
automatically. |
| 152 |
|
| 153 |
=cut |
| 154 |
|
| 155 |
sub _init_logger { |
| 156 |
my $self = shift; |
| 157 |
my $file = shift; |
| 158 |
$file ||= $self->{'log_conf'}; |
| 159 |
$file = 'conf/log.conf'; |
| 160 |
my $name = (caller(2))[3] || caller; |
| 161 |
|
| 162 |
my $conf = q( ); |
| 163 |
if ($self->{'no_log'}) { |
| 164 |
warn "# $name disabled logging\n" if ($log_debug); |
| 165 |
} elsif ($self->{'debug'}) { |
| 166 |
$conf = << '_log4perl_'; |
| 167 |
|
| 168 |
log4perl.rootLogger=INFO, SCREEN |
| 169 |
|
| 170 |
log4perl.logger.WebPAC.=DEBUG |
| 171 |
|
| 172 |
log4perl.appender.SCREEN=Log::Log4perl::Appender::Screen |
| 173 |
log4perl.appender.SCREEN.layout=PatternLayout |
| 174 |
log4perl.appender.SCREEN.layout.ConversionPattern=%d %p> %F{1}:%L %M - %m%n |
| 175 |
|
| 176 |
_log4perl_ |
| 177 |
warn "# $name is using debug logger\n" if ($log_debug); |
| 178 |
} elsif ($name =~ m/Test::Exception/o) { |
| 179 |
warn "# disabled logging for Text::Exception\n" if ($log_debug); |
| 180 |
} elsif (-e $file) { |
| 181 |
warn "# $name is using $file logger\n" if ($log_debug); |
| 182 |
Log::Log4perl->init($file); |
| 183 |
return 1; |
| 184 |
} else { |
| 185 |
warn "# $name is using null logger\n" if ($log_debug); |
| 186 |
} |
| 187 |
Log::Log4perl->init( \$conf ); |
| 188 |
|
| 189 |
return 1; |
| 190 |
} |
| 191 |
|
| 192 |
|
| 193 |
=head2 _get_logger |
| 194 |
|
| 195 |
Get C<Log::Log4perl> object with a twist: domains are defined for each |
| 196 |
method |
| 197 |
|
| 198 |
my $log = $webpac->_get_logger(); |
| 199 |
|
| 200 |
=cut |
| 201 |
|
| 202 |
sub _get_logger { |
| 203 |
my $self = shift; |
| 204 |
|
| 205 |
my $name = (caller(2))[3] || caller; |
| 206 |
$self->{'_logger_'} ||= $self->_init_logger; |
| 207 |
|
| 208 |
warn "# get_logger( $name )\n" if ($log_debug); |
| 209 |
|
| 210 |
return get_logger($name); |
| 211 |
} |
| 212 |
|
| 213 |
|
| 214 |
=head1 LOGGING |
| 215 |
|
| 216 |
Logging in WebPAC is performed by L<Log::Log4perl> with config file |
| 217 |
C<log.conf>. |
| 218 |
|
| 219 |
Methods defined above have different levels of logging, so |
| 220 |
it's descriptions will be useful to turn (mostry B<debug> logging) on |
| 221 |
or off to see why WabPAC isn't perforing as you expect it (it might even |
| 222 |
be a bug!). |
| 223 |
|
| 224 |
B<This is different from normal Log4perl behaviour>. To repeat, you can |
| 225 |
also use method names, and not only classes (which are just few) |
| 226 |
to filter logging. |
| 227 |
|
| 228 |
|
Parent Directory
| 
Revision Log