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|
package XXV::MODULES::LOGREAD;
use strict;
use Tools;
use XXV::OUTPUT::HTML::PUSH;
$|++;
# This module method must exist for XXV
# ------------------
sub module {
# ------------------
my $obj = shift || return error('No object defined!');
my $args = {
Name => 'LOGREAD',
Prereq => {
# 'Perl::Module' => 'Description',
},
Description => gettext('This module reads the xxv log file and displays it on the console.'),
Level => 'admin',
Preferences => {
active => {
description => gettext('Activate this service'),
default => 'y',
type => 'confirm',
required => gettext('This is required!'),
},
tail => {
description => sprintf(gettext("Path of command '%s'"),'tail'),
default => '/usr/bin/tail',
type => 'file',
required => gettext('This is required!'),
},
rows => {
description => gettext('Lines to display'),
default => '100',
type => 'integer',
required => gettext('This is required!'),
},
syslog => {
description => sprintf(gettext("Path of file '%s'"),'syslog'),
default => '/var/log/syslog',
type => 'file',
required => gettext('This is required!'),
},
},
Commands => {
logger => {
description => gettext("Display the last log entries"),
short => 'lg',
callback => sub{ $obj->logger(@_) },
},
},
};
return $args;
}
# ------------------
sub new {
# ------------------
my($class, %attr) = @_;
my $self = {};
bless($self, $class);
$self->{charset} = delete $attr{'-charset'};
if($self->{charset} eq 'UTF-8'){
eval 'use utf8';
}
# paths
$self->{paths} = delete $attr{'-paths'};
# who am I
$self->{MOD} = $self->module;
# all configvalues to $self without parents (important for ConfigModule)
map {
$self->{$_} = $attr{'-config'}->{$self->{MOD}->{Name}}->{$_};
$self->{$_} = $self->{MOD}->{Preferences}->{$_}->{default} unless($self->{$_});
} keys %{$self->{MOD}->{Preferences}};
# Try to use the Requirments
map {
eval "use $_";
if($@) {
my $m = (split(/ /, $_))[0];
return panic("\nCouldn't load perl module: $m\nPlease install this module on your system:\nperl -MCPAN -e 'install $m'");
}
} keys %{$self->{MOD}->{Prereq}};
return $self;
}
# ------------------
sub logger {
# ------------------
my $obj = shift || return error('No object defined!');
my $console = shift || return error('No console defined!');
my $config = shift || return error('No config defined!');
my $logname = shift || 'standard';
my $params = shift || {};
$obj->{logfiles} = {
main => {
# Path to logfile
logfile => $obj->{paths}->{LOGFILE},
#24 (14870) [22:29:08 09/22/05] CHANNELS: Read and register Channels ...
# Regular expression for every loglines
regex => qr/^(\d+)\s+\((\d+)\)\s+\[(\d+\-\d+\-\d+ \d+\:\d+\:\d+)\]\s+(.+?)$/s,
# Fields List for describe the rows
fields => [qw/Nr Typ Time Message/],
# Callback for coloring rows
display=> sub{
my $typ = $_[0][1];
return 'black' if($typ < 200);
return 'green' if($typ < 300);
return 'blue' if($typ < 400);
return 'brown' if($typ < 500);
return 'red' if($typ >= 500);
},
# Maximum letters for truncate in template
maxlet=> 50,
},
syslog => {
logfile => $obj->{syslog},
#Sep 23 00:35:01 vdr /USR/SBIN/CRON[16971]: (root) CMD (/usr/bin/weatherng.sh)
regex => qr/^(.+?)\s+(\d+)\s+(\d+\:\d+\:\d+)\s+(.+?)\s+(.+)/s,
fields => [qw/Month MDay Time Prg Message/],
display=> sub{
my $txt = $_[0][-1];
return 'red' if($txt =~ /ERROR/si);
return 'blue' if($txt =~ /WARNING/si);
return 'green' if($txt =~ /INFO/si);
return 'black';
},
maxlet=> 80,
},
};
if( ! ref $obj->{logfiles}->{$logname}) {
return $console->err(sprintf("The log with the name %s does not exist! Please use '%s'!", $logname, join("' or '", keys %{$obj->{logfiles}})));
}
my $logfile = $obj->{logfiles}->{$logname}->{logfile};
my @out = $obj->tail($logfile);
return $console->msg(undef, sprintf(gettext("Could not read log file %s!"), $logfile))
unless(scalar @out);
my $output = $obj->parseLogOutput($obj->{logfiles}->{$logname}, \@out);
my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
$atime,$mtime,$ctime,$blksize,$blocks)
= stat($logfile);
$console->table($output, {
type => $logname,
logfile => $logfile,
Size => convert($size),
LastChanged => datum($mtime),
full => $params->{full},
color => $obj->{logfiles}->{$logname}->{display},
maxlet => $obj->{logfiles}->{$logname}->{maxlet},
});
return 1;
}
# ------------------
sub tail {
# ------------------
my $obj = shift || return error('No object defined!');
my $logfile = shift || return error('No file defined!');
my $rows = shift || $obj->{rows};
my $cmd = sprintf('%s --lines=%d %s', $obj->{tail}, $rows, $logfile);
my @out = (`$cmd`);
return @out;
}
# ------------------
sub parseLogOutput {
# ------------------
my $obj = shift || return error('No object defined!');
my $log = shift || return error('No data defined!');
my $out = shift || return;
my $regex = $log->{regex};
$obj->{logbuf} = undef;
my $ret = [];
foreach my $line (@$out) {
if(my @d = $line =~ $regex) {
$obj->parseData($ret, \@d) if($d[0]);
} else {
$obj->parseData($ret, $line);
}
}
my @r = reverse @$ret;
unshift(@r, $log->{fields});
return \@r;
}
# ------------------
sub parseData {
# ------------------
my $obj = shift || return error('No object defined!');
my $ret = shift || return error('No data defined!');
my $data = shift || 0;
if(ref $data eq 'ARRAY') { # Set Data
$data->[-1] .= $obj->{logbuf}
if($obj->{logbuf});
push(@$ret, $data);
$obj->{logbuf} = undef;
} elsif($data) { # Message (last row, last item) .+ $line
$obj->{logbuf} .= $data;
}
return $ret;
}
1;
|
