use Carp;
use strict;
-use vars qw(%work @msg $msgdir %valid);
+use vars qw(%work @msg $msgdir %valid %busy);
%work = (); # outstanding jobs
@msg = (); # messages we have
+%busy = (); # station interlocks
$msgdir = "$main::root/msg"; # directory contain the msgs
%valid = (
$self->{subject} = shift;
$self->{origin} = shift;
$self->{read} = shift;
+ $self->{gotit} = [];
return $self;
}
if ($pcno == 28) { # incoming message
my $t = cltounix($f[5], $f[6]);
my $stream = next_transno($f[2]);
- my $ref = DXMsg->alloc($stream, $f[3], $f[4], $t, $f[7], $f[8], $f[13], '0');
+ my $ref = DXMsg->alloc($stream, $f[3], $f[4], $t, $f[7], $f[8], $f[13], '0', $f[11]);
# fill in various forwarding state variables
$ref->{fromnode} = $f[2];
$ref->{stream} = $stream;
$ref->{count} = 0; # no of lines between PC31s
dbg('msg', "new message from $f[4] to $f[3] '$f[8]' stream $stream\n");
- $work{"$f[1]$f[2]$stream"} = $ref; # store in work
+ $work{"$f[2]$stream"} = $ref; # store in work
+ $busy{$f[2]} = $ref; # set interlock
$self->send(DXProt::pc30($f[2], $f[1], $stream)); # send ack
last SWITCH;
}
if ($pcno == 29) { # incoming text
- my $ref = $work{"$f[1]$f[2]$f[3]"};
+ my $ref = $work{"$f[2]$f[3]"};
if ($ref) {
push @{$ref->{lines}}, $f[4];
$ref->{count}++;
last SWITCH;
}
- if ($pcno == 30) {
+ if ($pcno == 30) { # this is a incoming subject ack
+ my $ref = $work{$f[2]}; # note no stream at this stage
+ delete $work{$f[2]};
+ $ref->{stream} = $f[3];
+ $ref->{count} = 0;
+ $ref->{linesreq} = 5;
+ $work{"$f[2]$f[3]"} = $ref; # new ref
+ dbg('msg', "incoming subject ack stream $[3]\n");
+ $busy{$f[2]} = $ref; # interlock
+ $ref->{lines} = [];
+ push @{$ref->{lines}}, ($ref->read_msg_body);
+ $ref->send_tranche($self);
last SWITCH;
}
- if ($pcno == 31) {
+ if ($pcno == 31) { # acknowledge a tranche of lines
+ my $ref = $work{"$f[2]$f[3]"};
+ if ($ref) {
+ dbg('msg', "tranche ack stream $f[3]\n");
+ $ref->send_tranche($self);
+ } else {
+ $self->send(DXProt::pc42($f[2], $f[1], $f[3])); # unknown stream
+ }
last SWITCH;
}
if ($pcno == 32) { # incoming EOM
dbg('msg', "stream $f[3]: EOM received\n");
- my $ref = $work{"$f[1]$f[2]$f[3]"};
+ my $ref = $work{"$f[2]$f[3]"};
if ($ref) {
$self->send(DXProt::pc33($f[2], $f[1], $f[3]));# acknowledge it
# get the next msg no - note that this has NOTHING to do with the stream number in PC protocol
- # store the file or message
- # remove extraneous rubbish from the hash
- # remove it from the work in progress vector
- # stuff it on the msg queue
- $ref->{msgno} = next_transno("Msgno") if !$ref->{file};
- $ref->store($ref->{lines});
- $ref->workclean;
- delete $work{"$f[1]$f[2]$f[3]"};
- push @msg, $ref;
+ # store the file or message
+ # remove extraneous rubbish from the hash
+ # remove it from the work in progress vector
+ # stuff it on the msg queue
+ if ($ref->{lines} && @{$ref->{lines}} > 0) { # ignore messages with 0 lines
+ $ref->{msgno} = next_transno("Msgno") if !$ref->{file};
+ push @{$ref->{gotit}}, $f[2]; # mark this up as being received
+ $ref->store($ref->{lines});
+ add_dir($ref);
+ }
+ $ref->stop_msg($self);
+ queue_msg();
+ } else {
+ $self->send(DXProt::pc42($f[2], $f[1], $f[3])); # unknown stream
}
+ queue_msg();
last SWITCH;
}
- if ($pcno == 33) {
+ if ($pcno == 33) { # acknowledge the end of message
+ my $ref = $work{"$f[2]$f[3]"};
+ if ($ref) {
+ if ($ref->{private}) { # remove it if it private and gone off site#
+ $ref->del_msg;
+ } else {
+ push @{$ref->{gotit}}, $f[2]; # mark this up as being received
+ $ref->store($ref->{lines}); # re- store the file
+ }
+ $ref->stop_msg($self);
+ } else {
+ $self->send(DXProt::pc42($f[2], $f[1], $f[3])); # unknown stream
+ }
+ queue_msg();
last SWITCH;
}
dbg('msg', "created directory $fn\n");
}
my $stream = next_transno($f[2]);
- my $ref = DXMsg->alloc($stream, "$main::root/$f[3]", $self->call, time, !$f[4], $f[3], ' ', '0');
+ my $ref = DXMsg->alloc($stream, "$main::root/$f[3]", $self->call, time, !$f[4], $f[3], ' ', '0', '0');
# forwarding variables
$ref->{fromnode} = $f[1];
$ref->{stream} = $stream;
$ref->{count} = 0; # no of lines between PC31s
$ref->{file} = 1;
- $work{"$f[1]$f[2]$stream"} = $ref; # store in work
+ $work{"$f[2]$stream"} = $ref; # store in work
$self->send(DXProt::pc30($f[2], $f[1], $stream)); # send ack
last SWITCH;
}
+
+ if ($pcno == 42) { # abort transfer
+ dbg('msg', "stream $f[3]: abort received\n");
+ my $ref = $work{"$f[2]$f[3]"};
+ if ($ref) {
+ $ref->stop_msg($self);
+ $ref = undef;
+ }
+
+ last SWITCH;
+ }
}
}
# store a message away on disc or whatever
+#
+# NOTE the second arg is a REFERENCE not a list
sub store
{
my $ref = shift;
my $lines = shift;
# we only proceed if there are actually any lines in the file
- if (@{$lines} == 0) {
+ if (!$lines || @{$lines} == 0) {
return;
}
my $fn = filename($ref->{msgno});
dbg('msg', "To be stored in $fn\n");
-
+
+ # now save the file, overwriting what's there, YES I KNOW OK! (I will change it if it's a problem)
my $fh = new FileHandle "$fn", "w";
if (defined $fh) {
- print $fh "=== $ref->{msgno}^$ref->{to}^$ref->{from}^$ref->{t}^$ref->{private}^$ref->{subject}^$ref->{origin}^$ref->{read}\n";
- print $fh "=== $ref->{fromnode}\n";
+ my $rr = $ref->{rrreq} ? '1' : '0';
+ my $priv = $ref->{private} ? '1': '0';
+ print $fh "=== $ref->{msgno}^$ref->{to}^$ref->{from}^$ref->{t}^$priv^$ref->{subject}^$ref->{origin}^$ref->{read}^$rr\n";
+ print $fh "=== ", join('^', @{$ref->{gotit}}), "\n";
my $line;
$ref->{size} = 0;
foreach $line (@{$lines}) {
$ref->{size} += (length $line) + 1;
print $fh "$line\n";
}
- $ref->{gotit} = [];
- push @{$ref->{gotit}}, $ref->{fromnode} if $ref->{fromnode};
$fh->close;
dbg('msg', "msg $ref->{msgno} stored\n");
} else {
# remove it from the active message list
@msg = map { $_ != $self ? $_ : () } @msg;
+ # belt and braces (one day I will ask someone if this is REALLY necessary)
+ delete $self->{gotit};
+ delete $self->{list};
+
# remove the file
unlink filename($self->{msgno});
+ dbg('msg', "deleting $self->{msgno}\n");
}
# read in a message header
$line =~ s/^=== //o;
$ref->{gotit} = [];
@f = split /\^/, $line;
- push @{$ref->{goit}}, @f;
+ push @{$ref->{gotit}}, @f;
$ref->{size} = $size;
close($file);
return @out;
}
+# send a tranche of lines to the other end
+sub send_tranche
+{
+ my ($self, $dxchan) = @_;
+ my @out;
+ my $to = $self->{tonode};
+ my $from = $self->{fromnode};
+ my $stream = $self->{stream};
+ my $i;
+
+ for ($i = 0; $i < $self->{linesreq} && $self->{count} < @{$self->{lines}}; $i++, $self->{count}++) {
+ push @out, DXProt::pc29($to, $from, $stream, ${$self->{lines}}[$self->{count}]);
+ }
+ push @out, DXProt::pc32($to, $from, $stream) if $i < $self->{linesreq};
+ $dxchan->send(@out);
+}
+
+
+# find a message to send out and start the ball rolling
+sub queue_msg
+{
+ my $sort = shift;
+ my @nodelist = DXProt::get_all_ak1a();
+ my $ref;
+ my $clref;
+ my $dxchan;
+
+ # bat down the message list looking for one that needs to go off site and whose
+ # nearest node is not busy.
+
+ dbg('msg', "queue msg ($sort)\n");
+ foreach $ref (@msg) {
+ # firstly, is it private and unread? if so can I find the recipient
+ # in my cluster node list offsite?
+ if ($ref->{private}) {
+ if ($ref->{read} == 0) {
+ $clref = DXCluster->get($ref->{to});
+ if ($clref && !grep { $clref->{dxchan} == $_ } DXCommandmode::get_all) {
+ $dxchan = $clref->{dxchan};
+ $ref->start_msg($dxchan) if $clref && !get_busy($dxchan->call);
+ }
+ }
+ } elsif ($sort == undef) {
+ # otherwise we are dealing with a bulletin, compare the gotit list with
+ # the nodelist up above, if there are sites that haven't got it yet
+ # then start sending it - what happens when we get loops is anyone's
+ # guess, use (to, from, time, subject) tuple?
+ my $noderef;
+ foreach $noderef (@nodelist) {
+ next if $noderef->call eq $main::mycall;
+ next if grep { $_ eq $noderef->call } @{$ref->{gotit}};
+
+ # if we are here we have a node that doesn't have this message
+ $ref->start_msg($noderef) if !get_busy($noderef->call);
+ last;
+ }
+ }
+
+ # if all the available nodes are busy then stop
+ last if @nodelist == scalar grep { get_busy($_->call) } @nodelist;
+ }
+}
+
+# start the message off on its travels with a PC28
+sub start_msg
+{
+ my ($self, $dxchan) = @_;
+
+ dbg('msg', "start msg $self->{msgno}\n");
+ $self->{linesreq} = 5;
+ $self->{count} = 0;
+ $self->{tonode} = $dxchan->call;
+ $self->{fromnode} = $main::mycall;
+ $busy{$dxchan->call} = $self;
+ $work{"$self->{tonode}"} = $self;
+ $dxchan->send(DXProt::pc28($self->{tonode}, $self->{fromnode}, $self->{to}, $self->{from}, $self->{t}, $self->{private}, $self->{subject}, $self->{origin}, $self->{rrreq}));
+}
+
+# get the ref of a busy node
+sub get_busy
+{
+ my $call = shift;
+ return $busy{$call};
+}
+
+# get the busy queue
+sub get_all_busy
+{
+ return values %busy;
+}
+
+# get the forwarding queue
+sub get_fwq
+{
+ return values %work;
+}
+
+# stop a message from continuing, clean it out, unlock interlocks etc
+sub stop_msg
+{
+ my ($self, $dxchan) = @_;
+ my $node = $dxchan->call;
+
+ dbg('msg', "stop msg $self->{msgno} stream $self->{stream}\n");
+ delete $work{$node};
+ delete $work{"$node$self->{stream}"};
+ $self->workclean;
+ delete $busy{$node};
+}
+
# get a new transaction number from the file specified
sub next_transno
{
$ref = read_msg_header("$msgdir/$_");
next if !$ref;
- # add the clusters that have this
- push @msg, $ref;
+ # add the message to the available queue
+ add_dir($ref);
}
}
+# add the message to the directory listing
+sub add_dir
+{
+ my $ref = shift;
+ confess "tried to add a non-ref to the msg directory" if !ref $ref;
+ push @msg, $ref;
+}
+
# return all the current messages
sub get_all
{
@_ ? $self->{$name} = shift : $self->{$name} ;
}
+sub do_send_stuff
+{
+ my $self = shift;
+ my $line = shift;
+ my @out;
+
+ if ($self->state eq 'send1') {
+# $DB::single = 1;
+ confess "local var gone missing" if !ref $self->{loc};
+ my $loc = $self->{loc};
+ $loc->{subject} = $line;
+ $loc->{lines} = [];
+ $self->state('sendbody');
+ #push @out, $self->msg('sendbody');
+ push @out, "Enter Message /EX (^Z) to send or /ABORT (^Y) to exit";
+ } elsif ($self->state eq 'sendbody') {
+ confess "local var gone missing" if !ref $self->{loc};
+ my $loc = $self->{loc};
+ if ($line eq "\032" || uc $line eq "/EX") {
+ my $to;
+
+ if (@{$loc->{lines}} > 0) {
+ foreach $to (@{$loc->{to}}) {
+ my $ref;
+ my $systime = $main::systime;
+ my $mycall = $main::mycall;
+ $ref = DXMsg->alloc(DXMsg::next_transno('Msgno'),
+ uc $to,
+ $self->call,
+ $systime,
+ $loc->{private},
+ $loc->{subject},
+ $mycall,
+ $loc->{rrreq});
+ $ref->store($loc->{lines});
+ $ref->add_dir();
+ #push @out, $self->msg('sendsent', $to);
+ push @out, "msgno $ref->{msgno} sent to $to";
+ }
+ }
+ delete $loc->{lines};
+ delete $loc->{to};
+ delete $self->{loc};
+ $self->state('prompt');
+ $self->func(undef);
+ DXMsg::queue_msg();
+ } elsif ($line eq "\031" || uc $line eq "/ABORT" || uc $line eq "/QUIT") {
+ #push @out, $self->msg('sendabort');
+ push @out, "aborted";
+ delete $loc->{lines};
+ delete $loc->{to};
+ delete $self->{loc};
+ $self->func(undef);
+ $self->state('prompt');
+ } else {
+
+ # i.e. it ain't and end or abort, therefore store the line
+ push @{$loc->{lines}}, $line;
+ }
+ }
+ return (1, @out);
+}
1;
projects / spider.git / blobdiff