168 lines
3.5 KiB
Perl
168 lines
3.5 KiB
Perl
#!/usr/bin/perl
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package JMX::Jmx4Perl::Agent::Jolokia::Logger;
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use vars qw($HAS_COLOR);
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use strict;
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=head1 NAME
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JMX::Jmx4Perl::Agent::Jolokia::Logger - Simple logging abstraction for the
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Jolokia agent manager
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=head1 DESCRIPTION
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Simple Logger used throughout 'jolokia' and its associated modules for
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output. It knows about coloring and a quiet mode, where no output is generated
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at all.
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=cut
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BEGIN {
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$HAS_COLOR = eval "require Term::ANSIColor; Term::ANSIColor->import(qw(:constants)); 1";
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}
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=head1 METHODS
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=over 4
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=item $logger = JMX::Jmx4Perl::Agent::Jolokia::Logger->new(quiet=>1,color=>1)
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Creates a logger. Dependening on the options (C<quiet> and C<color>) output can
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be supressed completely or coloring can be used. Coloring only works, if the
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Module L<Term::ANSIColor> is available (which is checked during runtime).
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=cut
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sub new {
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my $class = shift;
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my $self = ref($_[0]) eq "HASH" ? $_[0] : { @_ };
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my $quiet = delete $self->{quiet};
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$HAS_COLOR &&= $self->{color};
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# No-op logger
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return new JMX::Jmx4Perl::Agent::Jolokia::Logger::None
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if $quiet;
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bless $self,(ref($class) || $class);
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}
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=item $log->debug("....");
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Debug output
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=cut
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sub debug {
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my $self = shift;
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if ($self->{debug}) {
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print "+ ",join("",@_),"\n";
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}
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}
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=item $log->info("....","[em]","....","[/em]",...);
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Info output. The tag "C<[em]>" can be used to higlight a portion of the
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output. The tag must be provided in an extra element in the given list.
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=cut
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sub info {
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my $self = shift;
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my $text = $self->_resolve_color(@_);
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my ($cs,$ce) = $HAS_COLOR ? (DARK . CYAN,RESET) : ("","");
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print $cs . "*" . $ce . " " . $text . "\n";
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}
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=item $log->warn(...)
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Warning output (printed in yellow)
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=cut
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sub warn {
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my $self = shift;
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my $text = join "",@_;
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my ($cs,$ce) = $HAS_COLOR ? (YELLOW,RESET) : ("","");
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print $cs. "! " . $text . $ce ."\n";
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}
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=item $log->warn(...)
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Error output (printed in red)
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=cut
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sub error {
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my $self = shift;
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my $text = join "",@_;
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my ($cs,$ce) = $HAS_COLOR ? (RED,RESET) : ("","");
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print $cs . $text . $ce . "\n";
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}
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sub _resolve_color {
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my $self = shift;
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return join "",map {
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if (lc($_) eq "[em]") {
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$HAS_COLOR ? GREEN : ""
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} elsif (lc($_) eq "[/em]") {
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$HAS_COLOR ? RESET : ""
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} else {
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$_
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}} @_;
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}
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=back
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=head1 LICENSE
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This file is part of jmx4perl.
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Jmx4perl is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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The Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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jmx4perl is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with jmx4perl. If not, see <http://www.gnu.org/licenses/>.
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A commercial license is available as well. Please contact roland@cpan.org for
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further details.
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=head1 AUTHOR
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roland@cpan.org
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=cut
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package JMX::Jmx4Perl::Agent::Jolokia::Logger::None;
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use base qw(JMX::Jmx4Perl::Agent::Jolokia::Logger);
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=head1 NAME
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JMX::Jmx4Perl::Agent::Jolokia::Logger::None - No-op logger
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=head1 DESCRIPTION
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No-op logger used when quiet mode is switched on. Doesn't print
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out anything.
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=cut
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sub info { }
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sub warn { }
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sub error { }
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sub debug { }
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1;
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