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Current File : /proc/self/root/usr/lib/sonarpush/lib/Log/Log4perl/Appender/Socket.pm
##################################################
package Log::Log4perl::Appender::Socket;
##################################################
our @ISA = qw(Log::Log4perl::Appender);

use warnings;
use strict;

use IO::Socket::INET;

##################################################
sub new {
##################################################
    my($class, @options) = @_;

    my $self = {
        name            => "unknown name",
        silent_recovery => 0,
        no_warning      => 0,
        PeerAddr        => "localhost",
        Proto           => 'tcp',
        Timeout         => 5,
        @options,
    };

    bless $self, $class;

    unless ($self->{defer_connection}){
        unless($self->connect(@options)) {
            if($self->{silent_recovery}) {
                if( ! $self->{no_warning}) {
                    warn "Connect to $self->{PeerAddr}:$self->{PeerPort} failed: $!";
                }
               return $self;
            }
            die "Connect to $self->{PeerAddr}:$self->{PeerPort} failed: $!";
        }

        $self->{socket}->autoflush(1); 
        #autoflush has been the default behavior since 1997
    }

    return $self;
}
    
##################################################
sub connect {
##################################################
    my($self, @options) = @_;

    $self->{socket} = IO::Socket::INET->new(@options);

    return $self->{socket};
}

##################################################
sub log {
##################################################
    my($self, %params) = @_;


    {
            # If we were never able to establish
            # a connection, try to establish one 
            # here. If it fails, return.
        if(($self->{silent_recovery} or $self->{defer_connection}) and 
           !defined $self->{socket}) {
            if(! $self->connect(%$self)) {
                return undef;
            }
        }
  
            # Try to send the message across
        eval { $self->{socket}->send($params{message}); 
             };

        if($@) {
            warn "Send to " . ref($self) . " failed ($@), retrying once...";
            if($self->connect(%$self)) {
                redo;
            }
            if($self->{silent_recovery}) {
                return undef;
            }
            warn "Reconnect to $self->{PeerAddr}:$self->{PeerPort} " .
                 "failed: $!";
            return undef;
        }
    };

    return 1;
}

##################################################
sub DESTROY {
##################################################
    my($self) = @_;

    undef $self->{socket};
}

1;

__END__

=encoding utf8

=head1 NAME

Log::Log4perl::Appender::Socket - Log to a socket

=head1 SYNOPSIS

    use Log::Log4perl::Appender::Socket;

    my $appender = Log::Log4perl::Appender::Socket->new(
      PeerAddr => "server.foo.com",
      PeerPort => 1234,
    );

    $appender->log(message => "Log me\n");

=head1 DESCRIPTION

This is a simple appender for writing to a socket. It relies on
L<IO::Socket::INET> and offers all parameters this module offers.

Upon destruction of the object, pending messages will be flushed
and the socket will be closed.

If the appender cannot contact the server during the initialization
phase (while running the constructor C<new>), it will C<die()>.

If the appender fails to log a message because the socket's C<send()>
method fails (most likely because the server went down), it will
try to reconnect once. If it succeeds, the message will be sent.
If the reconnect fails, a warning is sent to STDERR and the C<log()>
method returns, discarding the message.

If the option C<silent_recovery> is given to the constructor and
set to a true value, the behaviour is different: If the socket connection
can't be established at initialization time, a single warning is issued.
Every log attempt will then try to establish the connection and 
discard the message silently if it fails.
If you don't even want the warning, set the C<no_warning> option to
a true value.

Connecting at initialization time may not be the best option when
running under Apache1 Apache2/prefork, because the parent process creates
the socket and the connections are shared among the forked children--all
the children writing to the same socket could intermingle messages.  So instead
of that, you can use C<defer_connection> which will put off making the
connection until the first log message is sent.

=head1 EXAMPLE

Write a server quickly using the IO::Socket::INET module:

    use IO::Socket::INET;

    my $sock = IO::Socket::INET->new(
        Listen    => 5,
        LocalAddr => 'localhost',
        LocalPort => 12345,
        Proto     => 'tcp');

    while(my $client = $sock->accept()) {
        print "Client connected\n";
        while(<$client>) {
            print "$_\n";
        }
    }

Start it and then run the following script as a client:

    use Log::Log4perl qw(:easy);

    my $conf = q{
        log4perl.category                  = WARN, Socket
        log4perl.appender.Socket           = Log::Log4perl::Appender::Socket
        log4perl.appender.Socket.PeerAddr  = localhost
        log4perl.appender.Socket.PeerPort  = 12345
        log4perl.appender.Socket.layout    = SimpleLayout
    };

    Log::Log4perl->init(\$conf);

    sleep(2);

    for(1..10) {
        ERROR("Quack!");
        sleep(5);
    }

=head1 LICENSE

Copyright 2002-2013 by Mike Schilli E<lt>m@perlmeister.comE<gt> 
and Kevin Goess E<lt>cpan@goess.orgE<gt>.

This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself. 

=head1 AUTHOR

Please contribute patches to the project on Github:

    http://github.com/mschilli/log4perl

Send bug reports or requests for enhancements to the authors via our

MAILING LIST (questions, bug reports, suggestions/patches): 
log4perl-devel@lists.sourceforge.net

Authors (please contact them via the list above, not directly):
Mike Schilli <m@perlmeister.com>,
Kevin Goess <cpan@goess.org>

Contributors (in alphabetical order):
Ateeq Altaf, Cory Bennett, Jens Berthold, Jeremy Bopp, Hutton
Davidson, Chris R. Donnelly, Matisse Enzer, Hugh Esco, Anthony
Foiani, James FitzGibbon, Carl Franks, Dennis Gregorovic, Andy
Grundman, Paul Harrington, Alexander Hartmaier  David Hull, 
Robert Jacobson, Jason Kohles, Jeff Macdonald, Markus Peter, 
Brett Rann, Peter Rabbitson, Erik Selberg, Aaron Straup Cope, 
Lars Thegler, David Viner, Mac Yang.
Youez - 2016 - github.com/yon3zu
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