loncom/loncnew - diff

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Diff for /loncom/loncnew between versions 1.47 and 1.86

version 1.47, 2004/06/01 10:02:13	version 1.86, 2007/06/13 03:05:54
Line 60 use LONCAPA::Stack;	Line 60 use LONCAPA::Stack;
use LONCAPA::LondConnection;	use LONCAPA::LondConnection;
use LONCAPA::LondTransaction;	use LONCAPA::LondTransaction;
use LONCAPA::Configuration;	use LONCAPA::Configuration;
use LONCAPA::HashIterator;	use Fcntl qw(:flock);


# Read the httpd configuration file to get perl variables	# Read the httpd configuration file to get perl variables
Line 72 my %perlvar = %{$perlvarref};	Line 72 my %perlvar = %{$perlvarref};
#	#
# parent and shared variables.	# parent and shared variables.

my %ChildHash; # by pid -> host.	my %ChildPid; # by pid -> host.
my %HostToPid; # By host -> pid.	my %ChildHost; # by host.
my %HostHash; # by loncapaname -> IP.	my %listening_to; # Socket->host table for who the parent
	# is listening to.
	my %parent_dispatchers; # host-> listener watcher events.

	my %parent_handlers; # Parent signal handlers...

my $MaxConnectionCount = 10; # Will get from config later.	my $MaxConnectionCount = 10; # Will get from config later.
my $ClientConnection = 0; # Uniquifier for client events.	my $ClientConnection = 0; # Uniquifier for client events.

my $DebugLevel = 0;	my $DebugLevel = 0;
my $NextDebugLevel= 2; # So Sigint can toggle this.	my $NextDebugLevel= 2; # So Sigint can toggle this.
my $IdleTimeout= 3600; # Wait an hour before pruning connections.	my $IdleTimeout= 600; # Wait 10 minutes before pruning connections.

my $LogTransactions = 0; # When True, all transactions/replies get logged.	my $LogTransactions = 0; # When True, all transactions/replies get logged.
	my $executable = $0; # Get the full path to me.

#	#
# The variables below are only used by the child processes.	# The variables below are only used by the child processes.
#	#
my $RemoteHost; # Name of host child is talking to.	my $RemoteHost; # Name of host child is talking to.
	my $RemoteHostId; # default lonid of host child is talking to.
	my @all_host_ids;
my $UnixSocketDir= $perlvar{'lonSockDir'};	my $UnixSocketDir= $perlvar{'lonSockDir'};
my $IdleConnections = Stack->new(); # Set of idle connections	my $IdleConnections = Stack->new(); # Set of idle connections
my %ActiveConnections; # Connections to the remote lond.	my %ActiveConnections; # Connections to the remote lond.
Line 100 my $ConnectionCount = 0;	Line 106 my $ConnectionCount = 0;
my $IdleSeconds = 0; # Number of seconds idle.	my $IdleSeconds = 0; # Number of seconds idle.
my $Status = ""; # Current status string.	my $Status = ""; # Current status string.
my $RecentLogEntry = "";	my $RecentLogEntry = "";
my $ConnectionRetries=2; # Number of connection retries allowed.	my $ConnectionRetries=5; # Number of connection retries allowed.
my $ConnectionRetriesLeft=2; # Number of connection retries remaining.	my $ConnectionRetriesLeft=5; # Number of connection retries remaining.
my $LondVersion = "unknown"; # Version of lond we talk with.	my $LondVersion = "unknown"; # Version of lond we talk with.
	my $KeyMode = ""; # e.g. ssl, local, insecure from last connect.
	my $LondConnecting = 0; # True when a connection is being built.



	my $I_am_child = 0; # True if this is the child process.

#	#
# The hash below gives the HTML format for log messages	# The hash below gives the HTML format for log messages
Line 117 $LogFormats{"WARNING"} = "<font color='	Line 129 $LogFormats{"WARNING"} = "<font color='
$LogFormats{"DEFAULT"} = " %s ";	$LogFormats{"DEFAULT"} = " %s ";


	# UpdateStatus;
	# Update the idle status display to show how many connections
	# are left, retries and other stuff.
	#
	sub UpdateStatus {
	if ($ConnectionRetriesLeft > 0) {
	ShowStatus(GetServerHost()." Connection count: ".$ConnectionCount
	." Retries remaining: ".$ConnectionRetriesLeft
	." ($KeyMode)");
	} else {
	ShowStatus(GetServerHost()." >> DEAD <<");
	}
	}


=pod	=pod

Line 125 $LogFormats{"DEFAULT"} = " %s ";	Line 151 $LogFormats{"DEFAULT"} = " %s ";
Makes an entry into the permanent log file.	Makes an entry into the permanent log file.

=cut	=cut

sub LogPerm {	sub LogPerm {
my $message=shift;	my $message=shift;
my $execdir=$perlvar{'lonDaemons'};	my $execdir=$perlvar{'lonDaemons'};
my $now=time;	my $now=time;
my $local=localtime($now);	my $local=localtime($now);
my $fh=IO::File->new(">>$execdir/logs/lonnet.perm.log");	my $fh=IO::File->new(">>$execdir/logs/lonnet.perm.log");
	chomp($message);
print $fh "$now:$message:$local\n";	print $fh "$now:$message:$local\n";
}	}

Line 170 sub Log {	Line 198 sub Log {
my $now = time;	my $now = time;
my $local = localtime($now);	my $local = localtime($now);
my $finalformat = "$local ($$) [$RemoteHost] [$Status] ";	my $finalformat = "$local ($$) [$RemoteHost] [$Status] ";
my $finalformat = $finalformat.$format."\n";	$finalformat = $finalformat.$format."\n";

# open the file and put the result.	# open the file and put the result.

Line 232 sub SocketDump {	Line 260 sub SocketDump {
my ($level, $socket) = @_;	my ($level, $socket) = @_;

if($level <= $DebugLevel) {	if($level <= $DebugLevel) {
$socket->Dump();	$socket->Dump(-1); # Ensure it will get dumped.
}	}
}	}

Line 244 sub SocketDump {	Line 272 sub SocketDump {
and as what we return in a SIGUSR1	and as what we return in a SIGUSR1

=cut	=cut

sub ShowStatus {	sub ShowStatus {
my $state = shift;	my $state = shift;
my $now = time;	my $now = time;
Line 254 sub ShowStatus {	Line 283 sub ShowStatus {

=pod	=pod

=head 2 SocketTimeout	=head2 SocketTimeout

Called when an action on the socket times out. The socket is	Called when an action on the socket times out. The socket is
destroyed and any active transaction is failed.	destroyed and any active transaction is failed.


=cut	=cut

sub SocketTimeout {	sub SocketTimeout {
my $Socket = shift;	my $Socket = shift;
Log("WARNING", "A socket timeout was detected");	Log("WARNING", "A socket timeout was detected");
Debug(0, " SocketTimeout called: ");	Debug(5, " SocketTimeout called: ");
$Socket->Dump();	$Socket->Dump(0);
if(exists($ActiveTransactions{$Socket})) {	if(exists($ActiveTransactions{$Socket})) {
FailTransaction($ActiveTransactions{$Socket});	FailTransaction($ActiveTransactions{$Socket});
}	}
Line 273 sub SocketTimeout {	Line 303 sub SocketTimeout {
# a connection failure:	# a connection failure:
$ConnectionRetriesLeft--;	$ConnectionRetriesLeft--;
if($ConnectionRetriesLeft <= 0) {	if($ConnectionRetriesLeft <= 0) {
Log("CRITICAL", "Host marked dead: ".GetServerHost());	Log("CRITICAL", "Host marked DEAD: ".GetServerHost());
	$LondConnecting = 0;
}	}

}	}

	#
	# This function should be called by the child in all cases where it must
	# exit. The child process must create a lock file for the AF_UNIX socket
	# in order to prevent connection requests from lonnet in the time between
	# process exit and the parent picking up the listen again.
	#
	# Parameters:
	# exit_code - Exit status value, however see the next parameter.
	# message - If this optional parameter is supplied, the exit
	# is via a die with this message.
	#
	sub child_exit {
	my ($exit_code, $message) = @_;

	# Regardless of how we exit, we may need to do the lock thing:

	#
	# Create a lock file since there will be a time window
	# between our exit and the parent's picking up the listen
	# during which no listens will be done on the
	# lonnet client socket.
	#
	my $lock_file = &GetLoncSocketPath().".lock";
	open(LOCK,">$lock_file");
	print LOCK "Contents not important";
	close(LOCK);
	unlink(&GetLoncSocketPath());

	if ($message) {
	die($message);
	} else {
	exit($exit_code);
	}
	}
#----------------------------- Timer management ------------------------	#----------------------------- Timer management ------------------------

=pod	=pod
Line 289 Invoked each timer tick.	Line 355 Invoked each timer tick.


sub Tick {	sub Tick {
	my ($Event) = @_;
	my $clock_watcher = $Event->w;

my $client;	my $client;
if($ConnectionRetriesLeft > 0) {	UpdateStatus();
ShowStatus(GetServerHost()." Connection count: ".$ConnectionCount
." Retries remaining: ".$ConnectionRetriesLeft);
} else {
ShowStatus(GetServerHost()." >> DEAD <<");
}
# Is it time to prune connection count:	# Is it time to prune connection count:


Line 305 sub Tick {	Line 370 sub Tick {
if($IdleSeconds > $IdleTimeout) { # Prune a connection...	if($IdleSeconds > $IdleTimeout) { # Prune a connection...
my $Socket = $IdleConnections->pop();	my $Socket = $IdleConnections->pop();
KillSocket($Socket);	KillSocket($Socket);
	$IdleSeconds = 0; # Otherwise all connections get trimmed to fast.
	UpdateStatus();
	if(($ConnectionCount == 0)) {
	&child_exit(0);

	}
}	}
} else {	} else {
$IdleSeconds = 0; # Reset idle count if not idle.	$IdleSeconds = 0; # Reset idle count if not idle.
Line 323 sub Tick {	Line 394 sub Tick {
# Do we have work in the queue, but no connections to service them?	# Do we have work in the queue, but no connections to service them?
# If so, try to make some new connections to get things going again.	# If so, try to make some new connections to get things going again.
#	#
	# Note this code is dead now...
	#
my $Requests = $WorkQueue->Count();	my $Requests = $WorkQueue->Count();
if (($ConnectionCount == 0) && ($Requests > 0)) {	if (($ConnectionCount == 0) && ($Requests > 0) && (!$LondConnecting)) {
if ($ConnectionRetriesLeft > 0) {	if ($ConnectionRetriesLeft > 0) {
my $Connections = ($Requests <= $MaxConnectionCount) ?	Debug(5,"Work but no connections, Make a new one");
$Requests : $MaxConnectionCount;	my $success;
Debug(5,"Work but no connections, start ".$Connections." of them");	$success = &MakeLondConnection;
my $successCount = 0;	if($success == 0) { # All connections failed:
for (my $i =0; $i < $Connections; $i++) {
$successCount += MakeLondConnection();
}
if($successCount == 0) { # All connections failed:
Debug(5,"Work in queue failed to make any connectiouns\n");	Debug(5,"Work in queue failed to make any connectiouns\n");
EmptyQueue(); # Fail pending transactions with con_lost.	EmptyQueue(); # Fail pending transactions with con_lost.
CloseAllLondConnections(); # Should all be closed but....	CloseAllLondConnections(); # Should all be closed but....
}	}
} else {	} else {
	$LondConnecting = 0;
ShowStatus(GetServerHost()." >>> DEAD!!! <<<");	ShowStatus(GetServerHost()." >>> DEAD!!! <<<");
Debug(5,"Work in queue, but gave up on connections..flushing\n");	Debug(5,"Work in queue, but gave up on connections..flushing\n");
EmptyQueue(); # Connections can't be established.	EmptyQueue(); # Connections can't be established.
Line 347 sub Tick {	Line 416 sub Tick {
}	}

}	}
	if ($ConnectionCount == 0) {
	$KeyMode = "";
	$clock_watcher->cancel();
	}
	&UpdateStatus();
}	}

=pod	=pod
Line 387 long enough, it will be shut down and re	Line 461 long enough, it will be shut down and re

sub ServerToIdle {	sub ServerToIdle {
my $Socket = shift; # Get the socket.	my $Socket = shift; # Get the socket.
	$KeyMode = $Socket->{AuthenticationMode};
delete($ActiveTransactions{$Socket}); # Server has no transaction	delete($ActiveTransactions{$Socket}); # Server has no transaction

&Debug(5, "Server to idle");	&Debug(5, "Server to idle");
Line 428 the data and Event->w->fd is the socket	Line 503 the data and Event->w->fd is the socket
sub ClientWritable {	sub ClientWritable {
my $Event = shift;	my $Event = shift;
my $Watcher = $Event->w;	my $Watcher = $Event->w;
	if (!defined($Watcher)) {
	&child_exit(-1,'No watcher for event in ClientWritable');
	}
my $Data = $Watcher->data;	my $Data = $Watcher->data;
my $Socket = $Watcher->fd;	my $Socket = $Watcher->fd;

Line 466 sub ClientWritable {	Line 544 sub ClientWritable {
} else { # Partial string sent.	} else { # Partial string sent.
$Watcher->data(substr($Data, $result));	$Watcher->data(substr($Data, $result));
if($result == 0) { # client hung up on us!!	if($result == 0) { # client hung up on us!!
Log("INFO", "lonc pipe client hung up on us!");	# Log("INFO", "lonc pipe client hung up on us!");
$Watcher->cancel;	$Watcher->cancel;
$Socket->shutdown(2);	$Socket->shutdown(2);
$Socket->close();	$Socket->close();
Line 491 sub ClientWritable {	Line 569 sub ClientWritable {
}	}
} else {	} else {
$Watcher->cancel(); # A delayed request...just cancel.	$Watcher->cancel(); # A delayed request...just cancel.
	return;
}	}
}	}

Line 530 sub CompleteTransaction {	Line 609 sub CompleteTransaction {
StartClientReply($Transaction, $data);	StartClientReply($Transaction, $data);
} else { # Delete deferred transaction file.	} else { # Delete deferred transaction file.
Log("SUCCESS", "A delayed transaction was completed");	Log("SUCCESS", "A delayed transaction was completed");
LogPerm("S:$Transaction->getClient() :".$Transaction->getRequest());	LogPerm("S:".$Transaction->getClient().":".$Transaction->getRequest());
unlink $Transaction->getFile();	unlink($Transaction->getFile());
}	}
}	}

Line 594 Parameters:	Line 673 Parameters:

sub FailTransaction {	sub FailTransaction {
my $transaction = shift;	my $transaction = shift;
Log("WARNING", "Failing transaction ".$transaction->getRequest());
Debug(1, "Failing transaction: ".$transaction->getRequest());	# If the socket is dead, that's already logged.

	if ($ConnectionRetriesLeft > 0) {
	Log("WARNING", "Failing transaction "
	.$transaction->getLoggableRequest());
	}
	Debug(1, "Failing transaction: ".$transaction->getLoggableRequest());
if (!$transaction->isDeferred()) { # If the transaction is deferred we'll get to it.	if (!$transaction->isDeferred()) { # If the transaction is deferred we'll get to it.
my $client = $transaction->getClient();	my $client = $transaction->getClient();
Debug(1," Replying con_lost to ".$transaction->getRequest());	Debug(1," Replying con_lost to ".$transaction->getRequest());
Line 605 sub FailTransaction {	Line 690 sub FailTransaction {
}	}

=pod	=pod

=head1 EmptyQueue	=head1 EmptyQueue

Fails all items in the work queue with con_lost.	Fails all items in the work queue with con_lost.
Note that each item in the work queue is a transaction.	Note that each item in the work queue is a transaction.

=cut	=cut

sub EmptyQueue {	sub EmptyQueue {
$ConnectionRetriesLeft--; # Counts as connection failure too.	$ConnectionRetriesLeft--; # Counts as connection failure too.
while($WorkQueue->Count()) {	while($WorkQueue->Count()) {
Line 626 sub EmptyQueue {	Line 713 sub EmptyQueue {
Close all connections open on lond prior to exit e.g.	Close all connections open on lond prior to exit e.g.

=cut	=cut

sub CloseAllLondConnections {	sub CloseAllLondConnections {
foreach my $Socket (keys %ActiveConnections) {	foreach my $Socket (keys %ActiveConnections) {
if(exists($ActiveTransactions{$Socket})) {	if(exists($ActiveTransactions{$Socket})) {
Line 634 sub CloseAllLondConnections {	Line 722 sub CloseAllLondConnections {
KillSocket($Socket);	KillSocket($Socket);
}	}
}	}
=cut

=pod	=pod

Line 656 Parameters:	Line 743 Parameters:

nonzero if we are allowed to create a new connection.	nonzero if we are allowed to create a new connection.


=cut	=cut

sub KillSocket {	sub KillSocket {
my $Socket = shift;	my $Socket = shift;

Line 781 sub LondReadable {	Line 868 sub LondReadable {
"Lond connection lost.");	"Lond connection lost.");
if(exists($ActiveTransactions{$Socket})) {	if(exists($ActiveTransactions{$Socket})) {
FailTransaction($ActiveTransactions{$Socket});	FailTransaction($ActiveTransactions{$Socket});
	} else {
	# Socket is connecting and failed... need to mark
	# no longer connecting.

	$LondConnecting = 0;
}	}
$Watcher->cancel();	$Watcher->cancel();
KillSocket($Socket);	KillSocket($Socket);
Line 855 sub LondReadable {	Line 947 sub LondReadable {
.$RemoteHost." now ready for action");	.$RemoteHost." now ready for action");
}	}
ServerToIdle($Socket); # Next work unit or idle.	ServerToIdle($Socket); # Next work unit or idle.

	#
	$LondConnecting = 0; # Best spot I can think of for this.
	#

} elsif ($State eq "SendingRequest") {	} elsif ($State eq "SendingRequest") {
# We need to be writable for this and probably don't belong	# We need to be writable for this and probably don't belong
# here inthe first place.	# here inthe first place.

Deubg(6, "SendingRequest state encountered in readable");	Debug(6, "SendingRequest state encountered in readable");
$Watcher->poll("w");	$Watcher->poll("w");
$Watcher->cb(\&LondWritable);	$Watcher->cb(\&LondWritable);

Line 968 sub LondWritable {	Line 1064 sub LondWritable {
" has been disconnected");	" has been disconnected");
if(exists($ActiveTransactions{$Socket})) {	if(exists($ActiveTransactions{$Socket})) {
FailTransaction($ActiveTransactions{$Socket});	FailTransaction($ActiveTransactions{$Socket});
	} else {
	# In the process of conneting, so need to turn that off.

	$LondConnecting = 0;
}	}
$Watcher->cancel();	$Watcher->cancel();
KillSocket($Socket);	KillSocket($Socket);
Line 1054 sub LondWritable {	Line 1154 sub LondWritable {
}	}

}	}

=pod	=pod

=cut	=cut


sub QueueDelayed {	sub QueueDelayed {
Debug(3,"QueueDelayed called");	Debug(3,"QueueDelayed called");

Line 1064 sub QueueDelayed {	Line 1167 sub QueueDelayed {

Debug(4, "Delayed path: ".$path);	Debug(4, "Delayed path: ".$path);
opendir(DIRHANDLE, $path);	opendir(DIRHANDLE, $path);

my @alldelayed = grep /\.$RemoteHost$/, readdir DIRHANDLE;	my $host_id_re = '(?:'.join('\|',map {quotemeta($_)} (@all_host_ids)).')';
	my @alldelayed = grep(/\.$host_id_re$/, readdir(DIRHANDLE));
closedir(DIRHANDLE);	closedir(DIRHANDLE);
my $dfname;	foreach my $dfname (sort(@alldelayed)) {
my $reqfile;	my $reqfile = "$path/$dfname";
foreach $dfname (sort @alldelayed) {	my ($host_id) = ($dfname =~ /\.([^.]*)$/);
$reqfile = "$path/$dfname";	Debug(4, "queueing ".$reqfile." for $host_id");
Debug(4, "queueing ".$reqfile);
my $Handle = IO::File->new($reqfile);	my $Handle = IO::File->new($reqfile);
my $cmd = <$Handle>;	my $cmd = <$Handle>;
chomp $cmd; # There may or may not be a newline...	chomp $cmd; # There may or may not be a newline...
$cmd = $cmd."\n"; # now for sure there's exactly one newline.	$cmd = $cmd."\n"; # now for sure there's exactly one newline.
my $Transaction = LondTransaction->new($cmd);	my $Transaction = LondTransaction->new("sethost:$host_id:$cmd");
$Transaction->SetDeferred($reqfile);	$Transaction->SetDeferred($reqfile);
QueueTransaction($Transaction);	QueueTransaction($Transaction);
}	}
Line 1100 sub MakeLondConnection {	Line 1203 sub MakeLondConnection {
.GetServerPort());	.GetServerPort());

my $Connection = LondConnection->new(&GetServerHost(),	my $Connection = LondConnection->new(&GetServerHost(),
&GetServerPort());	&GetServerPort(),
	&GetHostId());

if($Connection eq undef) { # Needs to be more robust later.	if($Connection eq undef) { # Needs to be more robust later.
Log("CRITICAL","Failed to make a connection with lond.");	Log("CRITICAL","Failed to make a connection with lond.");
Line 1108 sub MakeLondConnection {	Line 1212 sub MakeLondConnection {
return 0; # Failure.	return 0; # Failure.
} else {	} else {

	$LondConnecting = 1; # Connection in progress.
# The connection needs to have writability	# The connection needs to have writability
# monitored in order to send the init sequence	# monitored in order to send the init sequence
# that starts the whole authentication/key	# that starts the whole authentication/key
Line 1115 sub MakeLondConnection {	Line 1220 sub MakeLondConnection {
#	#
my $Socket = $Connection->GetSocket();	my $Socket = $Connection->GetSocket();
if($Socket eq undef) {	if($Socket eq undef) {
die "did not get a socket from the connection";	&child_exit(-1, "did not get a socket from the connection");
} else {	} else {
&Debug(9,"MakeLondConnection got socket: ".$Socket);	&Debug(9,"MakeLondConnection got socket: ".$Socket);
}	}
Line 1128 sub MakeLondConnection {	Line 1233 sub MakeLondConnection {
data => $Connection,	data => $Connection,
desc => 'Connection to lond server');	desc => 'Connection to lond server');
$ActiveConnections{$Connection} = $event;	$ActiveConnections{$Connection} = $event;
	if ($ConnectionCount == 0) {
	&SetupTimer; # Need to handle timeouts with connections...
	}
$ConnectionCount++;	$ConnectionCount++;
Debug(4, "Connection count = ".$ConnectionCount);	Debug(4, "Connection count = ".$ConnectionCount);
if($ConnectionCount == 1) { # First Connection:	if($ConnectionCount == 1) { # First Connection:
Line 1219 sub QueueTransaction {	Line 1326 sub QueueTransaction {
if(!defined $LondSocket) { # Need to queue request.	if(!defined $LondSocket) { # Need to queue request.
Debug(5,"Must queue...");	Debug(5,"Must queue...");
$WorkQueue->enqueue($requestData);	$WorkQueue->enqueue($requestData);
if($ConnectionCount < $MaxConnectionCount) {	Debug(5, "Queue Transaction startnew $ConnectionCount $LondConnecting");
	if(($ConnectionCount < $MaxConnectionCount) && (! $LondConnecting)) {

if($ConnectionRetriesLeft > 0) {	if($ConnectionRetriesLeft > 0) {
Debug(5,"Starting additional lond connection");	Debug(5,"Starting additional lond connection");
if(MakeLondConnection() == 0) {	if(&MakeLondConnection() == 0) {
EmptyQueue(); # Fail transactions, can't make connection.	EmptyQueue(); # Fail transactions, can't make connection.
CloseAllLondConnections; # Should all be closed but...	CloseAllLondConnections; # Should all be closed but...
}	}
} else {	} else {
ShowStatus(GetServerHost()." >>> DEAD !!!! <<<");	ShowStatus(GetServerHost()." >>> DEAD !!!! <<<");
	$LondConnecting = 0;
EmptyQueue(); # It's worse than that ... he's dead Jim.	EmptyQueue(); # It's worse than that ... he's dead Jim.
CloseAllLondConnections; # Should all be closed but..	CloseAllLondConnections; # Should all be closed but..
}	}
Line 1291 sub ClientRequest {	Line 1401 sub ClientRequest {

}	}

	#
	# Accept a connection request for a client (lonc child) and
	# start up an event watcher to keep an eye on input from that
	# Event. This can be called both from NewClient and from
	# ChildProcess.
	# Parameters:
	# $socket - The listener socket.
	# Returns:
	# NONE
	# Side Effects:
	# An event is made to watch the accepted connection.
	# Active clients hash is updated to reflect the new connection.
	# The client connection count is incremented.
	#
	sub accept_client {
	my ($socket) = @_;

	Debug(8, "Entering accept for lonc UNIX socket\n");
	my $connection = $socket->accept(); # Accept the client connection.
	Debug(8,"Connection request accepted from "
	.GetPeername($connection, AF_UNIX));


	my $description = sprintf("Connection to lonc client %d",
	$ClientConnection);
	Debug(9, "Creating event named: ".$description);
	Event->io(cb => \&ClientRequest,
	poll => 'r',
	desc => $description,
	data => "",
	fd => $connection);
	$ActiveClients{$connection} = $ClientConnection;
	$ClientConnection++;
	}

=pod	=pod

Line 1309 sub NewClient {	Line 1453 sub NewClient {
my $event = shift; # Get the event parameters.	my $event = shift; # Get the event parameters.
my $watcher = $event->w;	my $watcher = $event->w;
my $socket = $watcher->fd; # Get the event' socket.	my $socket = $watcher->fd; # Get the event' socket.
my $connection = $socket->accept(); # Accept the client connection.
Debug(8,"Connection request accepted from "
.GetPeername($connection, AF_UNIX));

	&accept_client($socket);
my $description = sprintf("Connection to lonc client %d",
$ClientConnection);
Debug(9, "Creating event named: ".$description);
Event->io(cb => \&ClientRequest,
poll => 'r',
desc => $description,
data => "",
fd => $connection);
$ActiveClients{$connection} = $ClientConnection;
$ClientConnection++;
}	}

=pod	=pod
Line 1333 sub NewClient {	Line 1464 sub NewClient {
Returns the name of the UNIX socket on which to listen for client	Returns the name of the UNIX socket on which to listen for client
connections.	connections.

	=head2 Parameters:

	host (optional) - Name of the host socket to return.. defaults to
	the return from GetServerHost().

=cut	=cut

sub GetLoncSocketPath {	sub GetLoncSocketPath {
return $UnixSocketDir."/".GetServerHost();
	my $host = GetServerHost(); # Default host.
	if (@_) {
	($host) = @_; # Override if supplied.
	}
	return $UnixSocketDir."/".$host;
}	}

=pod	=pod
Line 1353 sub GetServerHost {	Line 1494 sub GetServerHost {

=pod	=pod

	=head2 GetServerId

	Returns the hostid whose lond we talk with.

	=cut

	sub GetHostId {
	return $RemoteHostId; # Setup by the fork.
	}

	=pod

=head2 GetServerPort	=head2 GetServerPort

Returns the lond port number.	Returns the lond port number.
Line 1373 connection. The event handler establish	Line 1526 connection. The event handler establish
(creating a communcations channel), that int turn will establish	(creating a communcations channel), that int turn will establish
another event handler to subess requests.	another event handler to subess requests.

	=head2 Parameters:

	host (optional) Name of the host to set up a unix socket to.

=cut	=cut

sub SetupLoncListener {	sub SetupLoncListener {
	my ($host,$SocketName) = @_;
	if (!$host) { $host = &GetServerHost(); }
	if (!$SocketName) { $SocketName = &GetLoncSocketPath($host); }


my $socket;
my $SocketName = GetLoncSocketPath();
unlink($SocketName);	unlink($SocketName);

	my $socket;
unless ($socket =IO::Socket::UNIX->new(Local => $SocketName,	unless ($socket =IO::Socket::UNIX->new(Local => $SocketName,
Listen => 10,	Listen => 250,
Type => SOCK_STREAM)) {	Type => SOCK_STREAM)) {
die "Failed to create a lonc listner socket";	if($I_am_child) {
	&child_exit(-1, "Failed to create a lonc listener socket");
	} else {
	die "Failed to create a lonc listner socket";
	}
}	}
Event->io(cb => \&NewClient,	return $socket;
poll => 'r',
desc => 'Lonc listener Unix Socket',
fd => $socket);
}	}

#	#
Line 1418 into the status file.	Line 1580 into the status file.

We also use this to reset the retries count in order to allow the	We also use this to reset the retries count in order to allow the
client to retry connections with a previously dead server.	client to retry connections with a previously dead server.

=cut	=cut

sub ChildStatus {	sub ChildStatus {
Line 1426 sub ChildStatus {	Line 1589 sub ChildStatus {

Debug(2, "Reporting child status because : ".$watcher->data);	Debug(2, "Reporting child status because : ".$watcher->data);
my $docdir = $perlvar{'lonDocRoot'};	my $docdir = $perlvar{'lonDocRoot'};
my $fh = IO::File->new(">>$docdir/lon-status/loncstatus.txt");
print $fh $$."\t".$RemoteHost."\t".$Status."\t".	open(LOG,">>$docdir/lon-status/loncstatus.txt");
	flock(LOG,LOCK_EX);
	print LOG $$."\t".$RemoteHost."\t".$Status."\t".
$RecentLogEntry."\n";	$RecentLogEntry."\n";
#	#
# Write out information about each of the connections:	# Write out information about each of the connections:
#	#
if ($DebugLevel > 2) {	if ($DebugLevel > 2) {
print $fh "Active connection statuses: \n";	print LOG "Active connection statuses: \n";
my $i = 1;	my $i = 1;
print STDERR "================================= Socket Status Dump:\n";	print STDERR "================================= Socket Status Dump:\n";
foreach my $item (keys %ActiveConnections) {	foreach my $item (keys %ActiveConnections) {
my $Socket = $ActiveConnections{$item}->data;	my $Socket = $ActiveConnections{$item}->data;
my $state = $Socket->GetState();	my $state = $Socket->GetState();
print $fh "Connection $i State: $state\n";	print LOG "Connection $i State: $state\n";
print STDERR "---------------------- Connection $i \n";	print STDERR "---------------------- Connection $i \n";
$Socket->Dump();	$Socket->Dump(-1); # Ensure it gets dumped..
$i++;	$i++;
}	}
}	}
	flock(LOG,LOCK_UN);
	close(LOG);
$ConnectionRetriesLeft = $ConnectionRetries;	$ConnectionRetriesLeft = $ConnectionRetries;
	UpdateStatus();
}	}

=pod	=pod
Line 1466 sub SignalledToDeath {	Line 1634 sub SignalledToDeath {
chomp($signal);	chomp($signal);
Log("CRITICAL", "Abnormal exit. Child $$ for $RemoteHost "	Log("CRITICAL", "Abnormal exit. Child $$ for $RemoteHost "
."died through "."\"$signal\"");	."died through "."\"$signal\"");
LogPerm("F:lonc: $$ on $RemoteHost signalled to death: "	#LogPerm("F:lonc: $$ on $RemoteHost signalled to death: "
."\"$signal\"");	# ."\"$signal\"");
exit 0;	exit 0;

}	}

	=pod

=head2 ToggleDebug	=head2 ToggleDebug

This sub toggles trace debugging on and off.	This sub toggles trace debugging on and off.
Line 1487 sub ToggleDebug {	Line 1657 sub ToggleDebug {

}	}

	=pod

=head2 ChildProcess	=head2 ChildProcess

This sub implements a child process for a single lonc daemon.	This sub implements a child process for a single lonc daemon.
	Optional parameter:
	$socket - if provided, this is a socket already open for listen
	on the client socket. Otherwise, a new listen is set up.

=cut	=cut

sub ChildProcess {	sub ChildProcess {
	# We've inherited all the
	# events of our parent and those have to be cancelled or else
	# all holy bloody chaos will result.. trust me, I already made
	# >that< mistake.

	my $host = GetServerHost();
	foreach my $listener (keys %parent_dispatchers) {
	my $watcher = $parent_dispatchers{$listener};
	my $s = $watcher->fd;
	if ($listener ne $host) { # Close everyone but me.
	Debug(5, "Closing listen socket for $listener");
	$s->close();
	}
	Debug(5, "Killing watcher for $listener");

	$watcher->cancel();
	delete($parent_dispatchers{$listener});

	}

	# kill off the parent's signal handlers too!
	#

	for my $handler (keys %parent_handlers) {
	my $watcher = $parent_handlers{$handler};
	$watcher->cancel();
	delete($parent_handlers{$handler});
	}

	$I_am_child = 1; # Seems like in spite of it all I may still getting
	# parent event dispatches.. flag I'm a child.


#	#
# Signals must be handled by the Event framework...	# Signals must be handled by the Event framework...
#	#

Event->signal(signal => "QUIT",	Event->signal(signal => "QUIT",
cb => \&SignalledToDeath,	cb => \&SignalledToDeath,
Line 1515 sub ChildProcess {	Line 1721 sub ChildProcess {
cb => \&ToggleDebug,	cb => \&ToggleDebug,
data => "INT");	data => "INT");

SetupTimer();	# Figure out if we got passed a socket or need to open one to listen for
	# client requests.
SetupLoncListener();
	my ($socket) = @_;
	if (!$socket) {

	$socket = SetupLoncListener();
	}
	# Establish an event to listen for client connection requests.


	Event->io(cb => \&NewClient,
	poll => 'r',
	desc => 'Lonc Listener Unix Socket',
	fd => $socket);

$Event::Debuglevel = $DebugLevel;	$Event::DebugLevel = $DebugLevel;

Debug(9, "Making initial lond connection for ".$RemoteHost);	Debug(9, "Making initial lond connection for ".$RemoteHost);

# Setup the initial server connection:	# Setup the initial server connection:

# &MakeLondConnection(); // let first work requirest do it.	# &MakeLondConnection(); // let first work request do it.

	# need to accept the connection since the event may not fire.

	&accept_client($socket);

Debug(9,"Entering event loop");	Debug(9,"Entering event loop");
my $ret = Event::loop(); # Start the main event loop.	my $ret = Event::loop(); # Start the main event loop.


die "Main event loop exited!!!";	&child_exit (-1,"Main event loop exited!!!");
}	}

# Create a new child for host passed in:	# Create a new child for host passed in:

sub CreateChild {	sub CreateChild {
	my ($host, $hostid) = @_;

my $sigset = POSIX::SigSet->new(SIGINT);	my $sigset = POSIX::SigSet->new(SIGINT);
sigprocmask(SIG_BLOCK, $sigset);	sigprocmask(SIG_BLOCK, $sigset);
my $host = shift;
$RemoteHost = $host;	$RemoteHost = $host;
Log("CRITICAL", "Forking server for ".$host);	Log("CRITICAL", "Forking server for ".$host);
my $pid = fork;	my $pid = fork;
if($pid) { # Parent	if($pid) { # Parent
$RemoteHost = "Parent";	$RemoteHost = "Parent";
$ChildHash{$pid} = $host;	$ChildPid{$pid} = $host;
$HostToPid{$host}= $pid;
sigprocmask(SIG_UNBLOCK, $sigset);	sigprocmask(SIG_UNBLOCK, $sigset);
	undef(@all_host_ids);
} else { # child.	} else { # child.
	$RemoteHostId = $hostid;
ShowStatus("Connected to ".$RemoteHost);	ShowStatus("Connected to ".$RemoteHost);
$SIG{INT} = 'DEFAULT';	$SIG{INT} = 'DEFAULT';
sigprocmask(SIG_UNBLOCK, $sigset);	sigprocmask(SIG_UNBLOCK, $sigset);
ChildProcess; # Does not return.	&ChildProcess(); # Does not return.
}	}
	}

	# parent_client_connection:
	# Event handler that processes client connections for the parent process.
	# This sub is called when the parent is listening on a socket and
	# a connection request arrives. We must:
	# Start a child process to accept the connection request.
	# Kill our listen on the socket.
	# Parameter:
	# event - The event object that was created to monitor this socket.
	# event->w->fd is the socket.
	# Returns:
	# NONE
	#
	sub parent_client_connection {
	if ($I_am_child) {
	# Should not get here, but seem to anyway:
	&Debug(5," Child caught parent client connection event!!");
	my ($event) = @_;
	my $watcher = $event->w;
	$watcher->cancel(); # Try to kill it off again!!
	} else {
	&Debug(9, "parent_client_connection");
	my ($event) = @_;
	my $watcher = $event->w;
	my $socket = $watcher->fd;
	my $connection = $socket->accept(); # Accept the client connection.
	Event->io(cb => \&get_remote_hostname,
	poll => 'r',
	data => "",
	fd => $connection);
	}
}	}

	sub get_remote_hostname {
	my ($event) = @_;
	my $watcher = $event->w;
	my $socket = $watcher->fd;

	my $thisread;
	my $rv = $socket->recv($thisread, POSIX::BUFSIZ, 0);
	Debug(8, "rcv: data length = ".length($thisread)." read =".$thisread);
	if (!defined($rv) \|\| length($thisread) == 0) {
	# Likely eof on socket.
	Debug(5,"Client Socket closed on lonc for p_c_c");
	close($socket);
	$watcher->cancel();
	return;
	}

	my $data = $watcher->data().$thisread;
	$watcher->data($data);
	if($data =~ /\n$/) { # Request entirely read.
	chomp($data);
	} else {
	return;
	}

	&Debug(5,"Creating child for $data (parent_client_connection)");
	(my $hostname,my $lonid,@all_host_ids) = split(':',$data);
	$ChildHost{$hostname}++;
	if ($ChildHost{$hostname} == 1) {
	&CreateChild($hostname,$lonid);
	} else {
	&Log('WARNING',"Request for a second child on $hostname");
	}
	# Clean up the listen since now the child takes over until it exits.
	$watcher->cancel(); # Nolonger listening to this event
	$socket->send("done\n");
	$socket->close();
	}

	# parent_listen:
	# Opens a socket and starts a listen for the parent process on a client UNIX
	# domain socket.
	#
	# This involves:
	# Creating a socket for listen.
	# Removing any socket lock file
	# Adding an event handler for this socket becoming readable
	# To the parent's event dispatcher.
	# Parameters:
	# loncapa_host - LonCAPA cluster name of the host represented by the client
	# socket.
	# Returns:
	# NONE
	#
	sub parent_listen {
	my ($loncapa_host) = @_;
	Debug(5, "parent_listen: $loncapa_host");

	my ($socket,$file);
	if (!$loncapa_host) {
	$loncapa_host = 'common_parent';
	$file = $perlvar{'lonSockCreate'};
	} else {
	$file = &GetLoncSocketPath($loncapa_host);
	}
	$socket = &SetupLoncListener($loncapa_host,$file);

	$listening_to{$socket} = $loncapa_host;
	if (!$socket) {
	die "Unable to create a listen socket for $loncapa_host";
	}

	my $lock_file = $file.".lock";
	unlink($lock_file); # No problem if it doesn't exist yet [startup e.g.]

	my $watcher =
	Event->io(cb => \&parent_client_connection,
	poll => 'r',
	desc => "Parent listener unix socket ($loncapa_host)",
	data => "",
	fd => $socket);
	$parent_dispatchers{$loncapa_host} = $watcher;

	}

	sub parent_clean_up {
	my ($loncapa_host) = @_;
	Debug(-1, "parent_clean_up: $loncapa_host");

	my $socket_file = &GetLoncSocketPath($loncapa_host);
	unlink($socket_file); # No problem if it doesn't exist yet [startup e.g.]
	my $lock_file = $socket_file.".lock";
	unlink($lock_file); # No problem if it doesn't exist yet [startup e.g.]
	}



	# This sub initiates a listen on the common unix domain lonc client socket.
	# loncnew starts up with no children, and only spawns off children when a
	# connection request occurs on the common client unix socket. The spawned
	# child continues to run until it has been idle a while at which point it
	# eventually exits and once more the parent picks up the listen.
	#
	# Parameters:
	# NONE
	# Implicit Inputs:
	# The configuration file that has been read in by LondConnection.
	# Returns:
	# NONE
	#
	sub listen_on_common_socket {
	Debug(5, "listen_on_common_socket");
	&parent_listen();
	}

	# server_died is called whenever a child process exits.
	# Since this is dispatched via a signal, we must process all
	# dead children until there are no more left. The action
	# is to:
	# - Remove the child from the bookeeping hashes
	# - Re-establish a listen on the unix domain socket associated
	# with that host.
	# Parameters:
	# The event, but we don't actually care about it.
	sub server_died {
	&Debug(9, "server_died called...");

	while(1) { # Loop until waitpid nowait fails.
	my $pid = waitpid(-1, WNOHANG);
	if($pid <= 0) {
	return; # Nothing left to wait for.
	}
	# need the host to restart:

	my $host = $ChildPid{$pid};
	if($host) { # It's for real...
	&Debug(9, "Caught sigchild for $host");
	delete($ChildPid{$pid});
	delete($ChildHost{$host});
	&parent_clean_up($host);

	} else {
	&Debug(5, "Caught sigchild for pid not in hosts hash: $pid");
	}
	}

	}

#	#
# Parent process logic pass 1:	# Parent process logic pass 1:
# For each entry in the hosts table, we will	# For each entry in the hosts table, we will
Line 1606 ShowStatus("Forking node servers");	Line 2007 ShowStatus("Forking node servers");
Log("CRITICAL", "--------------- Starting children ---------------");	Log("CRITICAL", "--------------- Starting children ---------------");

LondConnection::ReadConfig; # Read standard config files.	LondConnection::ReadConfig; # Read standard config files.
my $HostIterator = LondConnection::GetHostIterator;
while (! $HostIterator->end()) {

my $hostentryref = $HostIterator->get();	$RemoteHost = "[parent]";
CreateChild($hostentryref->[0]);	&listen_on_common_socket();
$HostHash{$hostentryref->[0]} = $hostentryref->[4];
$HostIterator->next();
}
$RemoteHost = "Parent Server";	$RemoteHost = "Parent Server";

# Maintain the population:	# Maintain the population:

ShowStatus("Parent keeping the flock");	ShowStatus("Parent keeping the flock");

#
# Set up parent signals:
#

$SIG{INT} = \&Terminate;
$SIG{TERM} = \&Terminate;
$SIG{HUP} = \&Restart;
$SIG{USR1} = \&CheckKids;
$SIG{USR2} = \&UpdateKids; # LonManage update request.

while(1) {
my $deadchild = wait();
if(exists $ChildHash{$deadchild}) { # need to restart.
my $deadhost = $ChildHash{$deadchild};
delete($HostToPid{$deadhost});
delete($ChildHash{$deadchild});
Log("WARNING","Lost child pid= ".$deadchild.
"Connected to host ".$deadhost);
Log("INFO", "Restarting child procesing ".$deadhost);
CreateChild($deadhost);
}
}

	# We need to setup a SIGChild event to handle the exit (natural or otherwise)
	# of the children.

	Event->signal(cb => \&server_died,
	desc => "Child exit handler",
	signal => "CHLD");


	# Set up all the other signals we set up.

	$parent_handlers{INT} = Event->signal(cb => \&Terminate,
	desc => "Parent INT handler",
	signal => "INT");
	$parent_handlers{TERM} = Event->signal(cb => \&Terminate,
	desc => "Parent TERM handler",
	signal => "TERM");
	$parent_handlers{HUP} = Event->signal(cb => \&KillThemAll,
	desc => "Parent HUP handler.",
	signal => "HUP");
	$parent_handlers{USR1} = Event->signal(cb => \&CheckKids,
	desc => "Parent USR1 handler",
	signal => "USR1");
	$parent_handlers{USR2} = Event->signal(cb => \&UpdateKids,
	desc => "Parent USR2 handler.",
	signal => "USR2");

	# Start procdesing events.

	$Event::DebugLevel = $DebugLevel;
	Debug(9, "Parent entering event loop");
	my $ret = Event::loop();
	die "Main Event loop exited: $ret";

=pod	=pod

Line 1664 sub CheckKids {	Line 2070 sub CheckKids {
my $now=time;	my $now=time;
my $local=localtime($now);	my $local=localtime($now);
print $fh "LONC status $local - parent $$ \n\n";	print $fh "LONC status $local - parent $$ \n\n";
foreach my $pid (keys %ChildHash) {	foreach my $host (keys %parent_dispatchers) {
	print $fh "LONC Parent process listening for $host\n";
	}
	foreach my $pid (keys %ChildPid) {
Debug(2, "Sending USR1 -> $pid");	Debug(2, "Sending USR1 -> $pid");
kill 'USR1' => $pid; # Tell Child to report status.	kill 'USR1' => $pid; # Tell Child to report status.
sleep 1; # Wait so file doesn't intermix.
}	}

}	}

=pod	=pod
Line 1701 sub UpdateKids {	Line 2110 sub UpdateKids {

Log("INFO", "Updating connections via SIGUSR2");	Log("INFO", "Updating connections via SIGUSR2");

# Just in case we need to kill our own lonc, we wait a few seconds to	# I'm not sure what I was thinking in the first implementation.
# give it a chance to receive and relay lond's response to the	# someone will have to work hard to convince me the effect is any
# re-init command.	# different than Restart, especially now that we don't start up
#	# per host servers automatically, may as well just restart.
	# The down side is transactions that are in flight will get timed out
sleep(2); # Wait a couple of seconds.	# (lost unless they are critical).

my %hosts; # Indexed by loncapa hostname, value=ip.

# Need to re-read the host table:


LondConnection::ReadConfig();
my $I = LondConnection::GetHostIterator;
while (! $I->end()) {
my $item = $I->get();
$hosts{$item->[0]} = $item->[4];
$I->next();
}

# The logic below is written for clarity not for efficiency.
# Since I anticipate that this function is only rarely called, that's
# appropriate. There are certainly ways to combine the loops below,
# and anyone wishing to obscure the logic is welcome to go for it.
# Note that we don't re-direct sigchild. Instead we do what's needed
# to the data structures that keep track of children to ensure that
# when sigchild is honored, no new child is born.
#

# For each existing child; if it's host doesn't exist, kill the child.

foreach my $child (keys %ChildHash) {	&KillThemAll();
my $oldhost = $ChildHash{$child};
if (!(exists $hosts{$oldhost})) {
Log("CRITICAL", "Killing child for $oldhost host no longer exists");
delete $ChildHash{$child};
delete $HostToPid{$oldhost};
kill 'QUIT' => $child;
}
}
# For each remaining existing child; if it's host's ip has changed,
# Restart the child on the new IP.

foreach my $child (keys %ChildHash) {
my $oldhost = $ChildHash{$child};
my $oldip = $HostHash{$oldhost};
if ($hosts{$oldhost} ne $oldip) {

# kill the old child.

Log("CRITICAL", "Killing child for $oldhost host ip has changed...");
delete $ChildHash{$child};
delete $HostToPid{$oldhost};
kill 'QUIT' => $child;

# Do the book-keeping needed to start a new child on the
# new ip.

$HostHash{$oldhost} = $hosts{$oldhost};
CreateChild($oldhost);
}
}
# Finally, for each new host, not in the host hash, create a
# enter the host and create a new child.
# Force a status display of any existing process.

foreach my $host (keys %hosts) {
if(!(exists $HostHash{$host})) {
Log("INFO", "New host $host discovered in hosts.tab...");
$HostHash{$host} = $hosts{$host};
CreateChild($host);
} else {
kill 'HUP' => $HostToPid{$host}; # status display.
}
}
}	}


Line 1794 sub Restart {	Line 2136 sub Restart {
Log("CRITICAL", "Restarting");	Log("CRITICAL", "Restarting");
my $execdir = $perlvar{'lonDaemons'};	my $execdir = $perlvar{'lonDaemons'};
unlink("$execdir/logs/lonc.pid");	unlink("$execdir/logs/lonc.pid");
exec("$execdir/loncnew");	exec("$executable");
}	}

=pod	=pod
Line 1808 SIGHUP. Responds to sigint and sigterm.	Line 2150 SIGHUP. Responds to sigint and sigterm.

sub KillThemAll {	sub KillThemAll {
Debug(2, "Kill them all!!");	Debug(2, "Kill them all!!");
local($SIG{CHLD}) = 'IGNORE'; # Our children >will< die.
foreach my $pid (keys %ChildHash) {	#local($SIG{CHLD}) = 'IGNORE';
my $serving = $ChildHash{$pid};	# Our children >will< die.
Debug(2, "Killing lonc for $serving pid = $pid");	# but we need to catch their death and cleanup after them in case this is
ShowStatus("Killing lonc for $serving pid = $pid");	# a restart set of kills
Log("CRITICAL", "Killing lonc for $serving pid = $pid");	my @allpids = keys(%ChildPid);
	foreach my $pid (@allpids) {
	my $serving = $ChildPid{$pid};
	ShowStatus("Nicely Killing lonc for $serving pid = $pid");
	Log("CRITICAL", "Nicely Killing lonc for $serving pid = $pid");
kill 'QUIT' => $pid;	kill 'QUIT' => $pid;
delete($ChildHash{$pid});
}	}
my $execdir = $perlvar{'lonDaemons'};	ShowStatus("Finished killing child processes off.");
unlink("$execdir/logs/lonc.pid");	}


	#
	# Kill all children via KILL. Just in case the
	# first shot didn't get them.

	sub really_kill_them_all_dammit
	{
	Debug(2, "Kill them all Dammit");
	local($SIG{CHLD} = 'IGNORE'); # In case some purist reenabled them.
	foreach my $pid (keys %ChildPid) {
	my $serving = $ChildPid{$pid};
	&ShowStatus("Nastily killing lonc for $serving pid = $pid");
	Log("CRITICAL", "Nastily killing lonc for $serving pid = $pid");
	kill 'KILL' => $pid;
	delete($ChildPid{$pid});
	my $execdir = $perlvar{'lonDaemons'};
	unlink("$execdir/logs/lonc.pid");
	}
}	}

=pod	=pod
Line 1831 Terminate the system.	Line 2194 Terminate the system.
=cut	=cut

sub Terminate {	sub Terminate {
KillThemAll;	&Log("CRITICAL", "Asked to kill children.. first be nice...");
	&KillThemAll;
	#
	# By now they really should all be dead.. but just in case
	# send them all SIGKILL's after a bit of waiting:

	sleep(4);
	&Log("CRITICAL", "Now kill children nasty");
	&really_kill_them_all_dammit;
Log("CRITICAL","Master process exiting");	Log("CRITICAL","Master process exiting");
exit 0;	exit 0;

}	}

	sub my_hostname {
	use Sys::Hostname;
	my $name = &hostname();
	&Debug(9,"Name is $name");
	return $name;
	}

=pod	=pod

=head1 Theory	=head1 Theory

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>

Removed from v.1.47
changed lines
	Added in v.1.86