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package daemons; |
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|
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use warnings; |
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use strict; |
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|
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use File::Slurp; |
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use Data::Dump qw/dump/; |
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|
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use x11; |
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use CouchDB; |
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|
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our $pids; |
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$pids = { httpd => $$, kvm => 'not started' } unless defined $pids; # keep pids on refresh |
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|
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sub DESTROY { |
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warn "pids ",dump( $pids ); |
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foreach ( values %$pids ) { |
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warn "kill $_"; |
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kill 1,$_ || kill 9, $_; |
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} |
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} |
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|
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$SIG{CHLD} = 'IGNORE'; |
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|
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sub audit { |
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my $msg = shift; |
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my $daemon = shift; |
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CouchDB::audit( $msg, $daemon, { daemon => $daemon, message => $msg, @_ } ); |
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} |
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|
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sub start_stop { |
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my $daemon = shift; |
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|
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my $pid = $pids->{$daemon}; |
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my $pid_path = "$server::conf/$daemon.pid"; |
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|
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if ( ! $pid && -e $pid_path ) { |
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my $p = read_file $pid_path; |
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if ( kill 0, $p ) { |
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audit 'adopted', $daemon, pid => $p; |
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return $pids->{$daemon} = $p; |
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} else { |
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audit 'not running', $daemon, pid => $p; |
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unlink $pid_path; |
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} |
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} |
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|
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$pid ||= 'not started'; |
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warn "start_stop $daemon $pid\n"; |
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|
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if ( $pid =~ m{^\d+$} ) { |
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my $pstree = `pstree -p $pid`; |
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my @pids = $pstree =~ m{\((\d+)\)}g; |
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warn "pstree $pstree pids ",dump( @pids ); |
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kill 1, $_ foreach reverse @pids; |
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$pids->{$daemon} = 'stopped'; |
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audit 'stopped', $daemon, pid => $pid; |
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return qq|$daemon pid $pid stopped|; |
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} else { |
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if ( $pid = fork ) { |
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# parent |
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$pids->{$daemon} = $pid; |
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write_file $pid_path, $pid; |
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audit 'forked', $daemon, pid => $pid; |
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return qq|$daemon pid $pid started|; |
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} elsif ( defined $pid ) { |
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# child |
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my $invoke = 'start'; |
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$invoke = $1 if $daemon =~ s{/(.+)}{}; |
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if ( $daemon =~ m{dhcpd|tftpd|dnsd} ) { |
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my $exec = "perl -I$server::base_dir/lib -I$server::base_dir/lib/PXElator -M$daemon -e ${daemon}::${invoke}"; |
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audit 'exec', $daemon, 'exec' => $exec; |
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x11::xterm( $daemon => $exec ); |
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} else { |
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my $eval = $daemon . '::' . $invoke . '(' . ( @_ ? dump(@_) : '' ) . ')'; |
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audit 'eval', $daemon, 'eval' => $eval; |
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eval $eval; |
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audit 'error', $daemon, error => $@ if $@; |
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} |
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exit; |
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} else { |
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audit 'error', $daemon, error => $!; |
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die "fork error $!"; |
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} |
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} |
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} |
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