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package XAS::Lib::Pidfile::Unix; |
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our $VERSION = '0.02'; |
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use XAS::Class |
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debug => 0, |
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version => $VERSION, |
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base => 'XAS::Base', |
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mixins => 'is_running scan_name', |
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utils => 'run_cmd trim compress', |
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# ---------------------------------------------------------------------- |
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# Public Methods |
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# ---------------------------------------------------------------------- |
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sub scan_name { |
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my $self = shift; |
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# just return the name of the script |
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my $c = sprintf('%s', $self->env->script); |
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return compress($c); |
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} |
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sub is_running { |
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my $self = shift; |
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my $pid = $self->_get_pid(); |
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my $commandline = $self->scan_name(); |
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if (defined($pid)) { |
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# use ps to scan for an existing process with this pid |
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my $command = "ps -p $pid -o comm="; |
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my ($output, $rc, $sig) = run_cmd($command); |
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if (defined($rc) && $rc == 0) { |
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foreach my $line (@$output) { |
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$line = compress(trim($line)); |
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$self->log->debug(sprintf("\"%s\" = \"%s\"", $commandline, $line)); |
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return $pid if ($commandline =~ /$line/); |
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} |
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} |
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} |
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return undef; |
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} |
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# ---------------------------------------------------------------------- |
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# Private Methods |
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# ---------------------------------------------------------------------- |
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1; |
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__END__ |
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=head1 NAME |
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XAS::Lib::PidFile::Unix - A mixin class to scan for processes on Unix |
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=head1 DESCRIPTION |
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This is a mixin class to provide process scanning on a Unix platform. It |
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uses "ps" to do the process scan. |
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=head1 METHODS |
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=head2 is_running |
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Please see L<XAS::Lib::PidFile|XAS::Lib::PidFile> for usage. |
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=head1 SEE ALSO |
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=over 4 |
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=item L<XAS|XAS> |
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=back |
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=head1 AUTHOR |
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Kevin L. Esteb, E<lt>kevin@kesteb.usE<gt> |
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=head1 COPYRIGHT AND LICENSE |
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Copyright (C) 2014 Kevin L. Esteb |
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This is free software; you can redistribute it and/or modify it under |
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the terms of the Artistic License 2.0. For details, see the full text |
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of the license at http://www.perlfoundation.org/artistic_license_2_0. |
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=cut |