use 5.10.1;
-use DXUtil;
+use lib qw {.};
+
use DXDebug;
+use DXUtil;
use DXLog;
use DXUser;
use DXChannel;
use Math::Round qw(nearest);
use Date::Parse;
-use Time::HiRes qw(clock_gettime CLOCK_REALTIME);
+use Time::HiRes qw(gettimeofday);
use Spot;
+use DXJSON;
+use IO::File;
+
+use constant {
+ ROrigin => 0,
+ RQrg => 1,
+ RCall => 2,
+ RMode => 3,
+ RStrength => 4,
+ RTime => 5,
+ RUtz => 6,
+ Respot => 7,
+ RQra => 8,
+ };
+
+# at least one whole spot per cache entry is necessary
+use constant {
+ SQrg => 0,
+ SCall => 1,
+ STime => 2,
+ SComment => 3,
+ SOrigin => 4,
+ SODxcc => 6,
+ SOItu => 8,
+ SOZone => 11,
+ SOState => 13,
+ SQra => 15, # i.e. extra after the IP address
+ };
+
+
+# Standard Cache entries
+# key Spot|normalised freq
+use constant {
+ CTime => 0, # time of latest spot in a tranch
+ CQual => 1, # Qualitee
+ CSpot => 3, # the Spot::Prepare data for this spot
+ CSkims => 3, # the list of skimmers (hcalls) is [[...]...]
+ };
+
+
+
+# key SK|<call>
+use constant {
+ SKTime =>0, # last time seen
+ SKOffset => 1,
+ SKQual => 2,
+ SKSpot =>3, # the Spot::Prepare data for this skimmer
+ };
+
+
+our $CACHE_VERSION = 2;
our @ISA = qw(DXChannel);
our $beacontime = 5*60; # same as minspottime, but for beacons (and shorter)
-our $dwelltime = 6; # the amount of time to wait for duplicates before issuing
+our $dwelltime = 10; # the amount of time to wait for duplicates before issuing
# a spot to the user (no doubt waiting with bated breath).
our $filterdef = $Spot::filterdef; # we use the same filter as the Spot system. Can't think why :-).
+my $spots; # the GLOBAL spot cache
+
+my %runtime; # how long each channel has been running
+
+our $cachefn = localdata('rbn_cache');
+our $cache_valid = 4*60; # The cache file is considered valid if it is not more than this old
+
+my $json;
+my $noinrush = 0; # override the inrushpreventor if set
+
+sub init
+{
+ $json = DXJSON->new;
+ $spots = {};
+ if (check_cache()) {
+ $noinrush = 1;
+ }
+ if (defined $DB::VERSION) {
+ $noinrush = 1;
+ $json->indent(1);
+ }
+}
+
sub new
{
my $self = DXChannel::alloc(@_);
my $pkg = shift;
my $call = shift;
-# DXProt::_add_thingy($main::routeroot, [$call, 0, 0, 1, undef, undef, $self->hostname], );
- $self->{spot} = {};
$self->{last} = 0;
$self->{noraw} = 0;
$self->{nospot} = 0;
+ $self->{nouser} = {};
$self->{norbn} = 0;
+ $self->{noraw10} = 0;
+ $self->{nospot10} = 0;
+ $self->{nouser10} = {};
+ $self->{norbn10} = 0;
+ $self->{nospothour} = 0;
+ $self->{nouserhour} = {};
+ $self->{norbnhour} = 0;
+ $self->{norawhour} = 0;
$self->{sort} = 'N';
$self->{lasttime} = $main::systime;
$self->{minspottime} = $minspottime;
$user->qra(DXBearing::lltoqra($lat, $long)) if (defined $lat && defined $long);
}
- # start inrush timer
- $self->{inrushpreventor} = $main::systime + $startup_delay;
+ # if we have been running and stopped for a while
+ # if the cache is warm enough don't operate the inrush preventor
+ $self->{inrushpreventor} = exists $runtime{$call} && $runtime{$call} > $startup_delay || $noinrush ? 0 : $main::systime + $startup_delay;
+ dbg("RBN: noinrush: $noinrush, setting inrushpreventor on $self->{call} to $self->{inrushpreventor}");
}
my @queue; # the queue of spots ready to send
my $self = shift;
my $line = shift;
my @ans;
- my $spots = $self->{spot};
-
- # save this for them's that need it
- my $rawline = $line;
+# my $spots = $self->{spot};
# remove leading and trailing spaces
chomp $line;
my $qra = $spd, $spd = '' if is_qra($spd);
$u = $qra if $qra;
+ # is this anything like a callsign?
+ unless (is_callsign($call)) {
+ dbg("RBN: ERROR $call from $origin on $qrg is invalid, dumped");
+ return;
+ }
+
$origin =~ s/\-(?:\d{1,2}\-)?\#$//; # get rid of all the crap we aren't interested in
$sort ||= '';
$tx ||= '';
$qra ||= '';
- dbg qq{or:$origin qr:$qrg ca:$call mo:$mode s:$s m:$m sp:$spd u:$u sort:$sort t:$t tx:$tx qra:$qra} if isdbg('rbn');
+ dbg qq{RBN:input decode or:$origin qr:$qrg ca:$call mo:$mode s:$s m:$m sp:$spd u:$u sort:$sort t:$t tx:$tx qra:$qra} if isdbg('rbn');
+ ++$self->{noraw};
+ ++$self->{noraw10};
+ ++$self->{norawhour};
my $b;
-
+
if ($t || $tx) {
# fix up times for things like 'NXDXF B' etc
# process to just the standard "message passing" which has been shown to be able to sustain over 5000
# per second (limited by the test program's output and network speed, rather than DXSpider's handling).
- my $nqrg = nearest(1, $qrg); # normalised to nearest Khz
+ my $nqrg = nearest(5, $qrg*10); # normalised to nearest .5 Khz (but multipled by 10 to get an integer)
+# my $nqrg = nearest_even($qrg); # normalised to nearest Khz
my $sp = "$call|$nqrg"; # hopefully the skimmers will be calibrated at least this well!
my $spp = sprintf("$call|%d", $nqrg+1); # but, clearly, my hopes are rudely dashed
my $spm = sprintf("$call|%d", $nqrg-1); # in BOTH directions!
# do we have it?
- my $spot = $spots->{$sp};
- $spot = $spots->{$spp}, $sp = $spp, dbg(qq{RBN: SPP using $spp for $sp}) if !$spot && exists $spots->{$spp};
- $spot = $spots->{$spm}, $sp = $spm, dbg(qq{RBN: SPM using $spm for $sp}) if !$spot && exists $spots->{$spm};
-
+ my $cand = $spots->{$sp};
+ $cand = $spots->{$spp}, $sp = $spp, dbg(qq{RBN: SPP using $spp for $sp}) if isdbg('rbn') && !$cand && exists $spots->{$spp};
+ $cand = $spots->{$spm}, $sp = $spm, dbg(qq{RBN: SPM using $spm for $sp}) if isdbg('rbn') && !$cand && exists $spots->{$spm};
# if we have one and there is only one slot and that slot's time isn't expired for respot then return
my $respot = 0;
- if ($spot && ref $spot) {
- if (@$spot == 1) {
- unless ($self->{minspottime} > 0 && $tim - $spot->[0] >= $self->{minspottime}) {
- dbg("RBN: key: '$sp' call: $call qrg: $qrg DUPE \@ ". atime(int $spot->[0])) if isdbg('rbn');
+ if ($cand && ref $cand) {
+ if (@$cand <= CEMPTY) {
+ unless ($self->{minspottime} > 0 && $tim - $cand->[0] >= $self->{minspottime}) {
+ dbg("RBN: key: '$sp' call: $call qrg: $qrg DUPE \@ ". atime(int $cand->[0])) if isdbg('rbn');
return;
}
- dbg("RBN: key: '$sp' RESPOTTING call: $call qrg: $qrg last seen \@ ". atime(int $spot->[0])) if isdbg('rbn');
- undef $spot; # it's about to be recreated (in one place)
+ dbg("RBN: key: '$sp' RESPOTTING call: $call qrg: $qrg last seen \@ ". atime(int $cand->[0])) if isdbg('rbn');
+ undef $cand; # it's about to be recreated (in one place)
++$respot;
}
# otherwise we have a spot being built up at the moment
- } elsif ($spot) {
- dbg("RBN: key '$sp' = '$spot' not ref");
+ } elsif ($cand) {
+ dbg("RBN: key '$sp' = '$cand' not ref");
return;
}
# here we either have an existing spot record buildup on the go, or we need to create the first one
- unless ($spot) {
- $spots->{$sp} = $spot = [clock_gettime(CLOCK_REALTIME)];;
- dbg("RBN: key: '$sp' call: $call qrg: $qrg NEW" . $respot ? ' RESPOT' : '') if isdbg('rbn');
+ unless ($cand) {
+ $spots->{$sp} = $cand = [$main::systime, 0, 0];
+ dbg("RBN: key: '$sp' call: $call qrg: $qrg NEW" . ($respot ? ' RESPOT' : '')) if isdbg('rbn');
}
# add me to the display queue unless we are waiting for initial in rush to finish
- return unless $self->{inrushpreventor} < $main::systime;
- push @{$self->{queue}}, $sp if @$spot == 1; # queue the KEY (not the record)
+ return unless $noinrush || $self->{inrushpreventor} < $main::systime;
# build up a new record and store it in the buildup
# deal with the unix time
# create record and add into the buildup
my $r = [$origin, nearest(.1, $qrg), $call, $mode, $s, $t, $utz, $respot, $u];
- dbg("RBN: key: '$sp' ADD RECORD call: $call qrg: $qrg origin: $origin") if isdbg('rbn');
- my @s = Spot::prepare($r->[1], $r->[2], $r->[6], '', $r->[0]);
+ unless ($cand->[CSpot]) {
+ my @s = Spot::prepare($r->[RQrg], $r->[RCall], $r->[RUtz], '', $r->[ROrigin]);
+ if ($s[5] == 666) {
+ dbg("RBN: ERROR invalid prefix/callsign $call from $origin-# on $qrg, dumped");
+ return;
+ }
+ $cand->[CSpot] = \@s;
+ }
+
if ($self->{inrbnfilter}) {
my ($want, undef) = $self->{inrbnfilter}->it($s);
- next unless $want;
+ return unless $want;
+ }
+
+ # add/set up the skimmer record
+ my $skimkey = "SK|$origin";
+ my $skim = $spots->{$skimkey};
+ unless ($skim) {
+ my $ur = DXUser::get($origin);
+ $spots->{$skimkey} = [$main::systime, 0, 0, $s->[SODxcc], $s->[SOItu], $s->[SOZone], $s->[SOState], ($ur ? $ur->qra : undef) ];
}
- $r->[9] = \@s;
- push @$spot, $r;
+
+
+ push @{$self->{queue}}, $sp if @$cand == 1; # queue the KEY (not the record)
+
+ dbg("RBN: key: '$sp' ADD RECORD call: $call qrg: $qrg origin: $origin") if isdbg('rbn');
+
+ push @$cand, $r;
# At this point we run the queue to see if anything can be sent onwards to the punter
- my $now = clock_gettime(CLOCK_REALTIME);
+ my $now = $main::systime;
# now run the waiting queue which just contains KEYS ($call|$qrg)
foreach $sp (@{$self->{queue}}) {
dbg "RBN Cand " . ($cand ? 'def' : 'undef') . " [0] " . ($cand->[0] ? 'def' : 'undef') . " dwell $dwelltime";
next;
}
- if ($now >= $cand->[0] + $dwelltime ) {
+ if ($now >= $cand->[CTime] + $dwelltime ) {
# we have a candidate, create qualitee value(s);
- unless (@$cand > 1) {
+ unless (@$cand > CEMPTY) {
dbg "RBN: QUEUE key '$sp' MISSING RECORDS " . dd($cand) if isdbg 'rbn';
shift @{$self->{queue}};
next;
$quality = 9 if $quality > 9;
$quality = "Q:$quality";
if (isdbg('progress')) {
- my $s = "RBN: SPOT key: '$sp' = $r->[2] on $r->[1] \@ $r->[5] $quality";
+ my $s = "RBN: SPOT key: '$sp' = $r->[RCall] on $r->[RQrg] by $r->[ROrigin] \@ $r->[RTime] $quality";
$s .= " route: $self->{call}";
dbg($s);
}
$spots->{$sp} = [$savedtime];
shift @{$self->{queue}};
} else {
- dbg sprintf("RBN: QUEUE key: '$sp' SEND time not yet reached %.1f secs left", $spot->[0] + $dwelltime - $now) if isdbg 'rbnqueue';
+ dbg sprintf("RBN: QUEUE key: '$sp' SEND time not yet reached %.1f secs left", $cand->[0] + $dwelltime - $now) if isdbg 'rbnqueue';
}
}
-
-
} else {
dbg "RBN:DATA,$line" if isdbg('rbn');
}
-
- # # periodic clearing out of the two caches
- if (($tim % 60 == 0 && $tim > $self->{last}) || ($self->{last} && $tim >= $self->{last} + 60)) {
- my $count = 0;
- my $removed = 0;
- while (my ($k,$v) = each %{$spots}) {
- if ($tim - $v->[0] > $self->{minspottime}*2) {
- delete $spots->{$k};
- ++$removed;
- }
- else {
- ++$count;
- }
- }
- dbg "RBN:ADMIN,$self->{call},spot cache remain: $count removed: $removed"; # if isdbg('rbn');
- dbg "RBN:" . join(',', "STAT", $self->{noraw}, $self->{norbn}, $self->{nospot}) if $self->{showstats};
- $self->{noraw} = $self->{norbn} = $self->{nospot} = 0;
- $self->{last} = int($tim / 60) * 60;
- }
}
-
-
-# }
-# }
-
# we should get the spot record minus the time, so just an array of record (arrays)
sub send_dx_spot
{
my $self = shift;
my $quality = shift;
- my $spot = shift;
+ my $cand = shift;
+ ++$self->{norbn};
+ ++$self->{norbn10};
+ ++$self->{norbnhour};
+
# $r = [$origin, $qrg, $call, $mode, $s, $utz, $respot];
- my $mode = $spot->[0]->[3]; # as all the modes will be the same;
+ my $mode = $cand->[0]->[3]; # as all the modes will be the same;
my @dxchan = DXChannel::get_all();
++$want if $user->wantbeacon && $mode =~ /^BCN|DXF/;
++$want if $user->wantcw && $mode =~ /^CW/;
++$want if $user->wantrtty && $mode =~ /^RTT/;
- ++$want if $user->wantpsk && $mode =~ /^PSK/;
- ++$want if $user->wantcw && $mode =~ /^CW/;
+ ++$want if $user->wantpsk && $mode =~ /^PSK|FSK|MSK/;
++$want if $user->wantft && $mode =~ /^FT/;
- ++$want unless $want; # send everything if nothing is selected.
- next unless $want;
+ dbg(sprintf("RBN: spot selection for $dxchan->{call} mode: '$mode' want: $want flags rbn:%d ft:%d bcn:%d cw:%d psk:%d rtty:%d",
+ $user->wantrbn,
+ $user->wantft,
+ $user->wantbeacon,
+ $user->wantcw,
+ $user->wantpsk,
+ $user->wantrtty,
+ )) if isdbg('rbnll');
# send one spot to one user out of the ones that we have
- $self->dx_spot($dxchan, $quality, $spot) if $want;
+ $self->dx_spot($dxchan, $quality, $cand) if $want;
}
}
my $self = shift;
my $dxchan = shift;
my $quality = shift;
- my $spot = shift;
+ my $cand = shift;
+ my $call = $dxchan->{call};
+
my $strength = 100; # because it could if we talk about FTx
my $saver;
my %qrg;
my $respot;
my $qra;
-
- foreach my $r (@$spot) {
+
+ ++$self->{nousers}->{$call};
+ ++$self->{nousers10}->{$call};
+ ++$self->{nousershour}->{$call};
+
+ my $filtered;
+ my $rf = $dxchan->{rbnfilter} || $dxchan->{spotsfilter};
+ foreach my $r (@$cand) {
# $r = [$origin, $qrg, $call, $mode, $s, $t, $utz, $respot, $qra];
# Spot::prepare($qrg, $call, $utz, $comment, $origin);
- my $comment = sprintf "%-3s %2ddB $quality", $r->[3], $r->[4];
- $respot = 1 if $r->[7];
- $qra = $r->[8] if !$qra && $r->[8] && is_qra($r->[8]);
+ my $comment = sprintf "%-3s %2ddB $quality", $r->[RMode], $r->[RStrength];
+ $respot = 1 if $r->[Respot];
+ $qra = $r->[RQra] if !$qra && $r->[RQra] && is_qra($r->[RQra]);
- my $s = $r->[9]; # the prepared spot
- $s->[3] = $comment; # apply new generated comment
+ my $s = $r->[RSpotData]; # the prepared spot
+ $s->[SComment] = $comment; # apply new generated comment
- ++$zone{$s->[11]}; # save the spotter's zone
- ++$qrg{$s->[0]}; # and the qrg
+ ++$zone{$s->[SZone]}; # save the spotter's zone
+ ++$qrg{$s->[SQrg]}; # and the qrg
- my $want = 0;
- my $rf = $dxchan->{rbnfilter} || $dxchan->{spotsfilter};
- if ($rf) {
- ($want, undef) = $rf->it($s);
- next unless $want;
+ # save the lowest strength one
+ if ($r->[RStrength] < $strength) {
+ $strength = $r->[RStrength];
$saver = $s;
- dbg("RBN: FILTERED call: $s->[1] qrg: $s->[0] origin: $s->[4] dB: $r->[4]") if isdbg 'rbn';
- last;
+ dbg("RBN: STRENGTH spot: $s->[SCall] qrg: $s->[SQrg] origin: $s->[SOrigin] dB: $r->[RStrength] < $strength") if isdbg 'rbnll';
}
- # save the lowest strength one
- if ($r->[4] < $strength) {
- $strength = $r->[4];
- $saver = $s;
- dbg("RBN: STRENGTH call: $s->[1] qrg: $s->[0] origin: $s->[4] dB: $r->[4]") if isdbg 'rbn';
+ if ($rf && !$want) {
+ my ($want, undef) = $rf->it($s);
+ dbg("RBN: FILTERING for $call spot: $s->[SCall] qrg: $s->[SQrg] origin: $s->[SOrigin] dB: $r->[RStrength] com: '$s->[SComment]' want: " . ($want ? 'YES':'NO')) if isdbg 'rbnll';
+ next unless $want;
+ $filtered = $s;
+# last;
}
}
+ if ($rf) {
+ $saver = $filtered; # if nothing passed the filter's lips then $saver == $filtered == undef !
+ }
+
if ($saver) {
my $buf;
# create a zone list of spotters
- delete $zone{$saver->[11]}; # remove this spotter's zone (leaving all the other zones)
+ delete $zone{$saver->[SZone]}; # remove this spotter's zone (leaving all the other zones)
my $z = join ',', sort {$a <=> $b} keys %zone;
# determine the most likely qrg and then set it
$fk = $k, $mv = $v if $v > $mv;
++$c;
}
- $saver->[0] = $fk;
- $saver->[3] .= '*' if $c > 1;
- $saver->[3] .= '+' if $respot;
- $saver->[3] .= " Z:$z" if $z;
+ $saver->[SQrg] = $fk;
+ $saver->[SComment] .= '*' if $c > 1;
+ $saver->[SComment] .= '+' if $respot;
+ $saver->[SComment] .= " Z:$z" if $z;
- dbg("RBN: SENDING call: $saver->[1] qrg: $saver->[0] origin: $saver->[4] $saver->[3]") if isdbg 'rbn';
+ dbg("RBN: SENDING to $call spot: $saver->[SCall] qrg: $saver->[SQrg] origin: $saver->[SOrigin] $saver->[SComment]") if isdbg 'rbnll';
if ($dxchan->{ve7cc}) {
- my $call = $saver->[4];
- $saver->[4] .= '-#';
+ my $call = $saver->[SOrigin];
+ $saver->[SOrigin] .= '-#';
$buf = VE7CC::dx_spot($dxchan, @$saver);
- $saver->[4] = $call;
+ $saver->[SOrigin] = $call;
} else {
+ my $call = $saver->[SOrigin];
+ $saver->[SOrigin] = substr($call, 0, 6);
+ $saver->[SOrigin] .= '-#';
$buf = $dxchan->format_dx_spot(@$saver);
+ $saver->[SOrigin] = $call;
}
- $buf =~ s/^DX/RB/;
+# $buf =~ s/^DX/RB/;
$dxchan->local_send('N', $buf);
+ ++$self->{nospot};
+ ++$self->{nospot10};
+ ++$self->{nospothour};
+
if ($qra) {
- my $user = DXUser::get_current($saver->[1]) || DXUser->new($saver->[1]);
+ my $user = DXUser::get_current($saver->[SCall]) || DXUser->new($saver->[SCall]);
unless ($user->qra && is_qra($user->qra)) {
$user->qra($qra);
- dbg("RBN: update qra on $saver->[1] to $qra");
+ dbg("RBN: update qra on $saver->[SCall] to $qra");
$user->put;
}
}
}
}
+
+sub per_minute
+{
+ foreach my $dxchan (DXChannel::get_all()) {
+ next unless $dxchan->is_rbn;
+ dbg "RBN:STATS minute $dxchan->{call} raw: $dxchan->{noraw} sent: $dxchan->{norbn} delivered: $dxchan->{nospot} users: " . scalar keys %{$dxchan->{nousers}} if isdbg('rbnstats');
+ if ($dxchan->{noraw} == 0 && $dxchan->{lasttime} > 60) {
+ LogDbg('RBN', "RBN: no input from $dxchan->{call}, disconnecting");
+ $dxchan->disconnect;
+ }
+ $dxchan->{noraw} = $dxchan->{norbn} = $dxchan->{nospot} = 0; $dxchan->{nousers} = {};
+ $runtime{$dxchan->{call}} += 60;
+ }
+
+ # save the spot cache
+ write_cache() unless $main::systime + $startup_delay < $main::systime;;
+}
+
+sub per_10_minute
+{
+ my $count = 0;
+ my $removed = 0;
+ while (my ($k,$v) = each %{$spots}) {
+ if ($main::systime - $v->[0] > $minspottime*2) {
+ delete $spots->{$k};
+ ++$removed;
+ }
+ else {
+ ++$count;
+ }
+ }
+ dbg "RBN:STATS spot cache remain: $count removed: $removed"; # if isdbg('rbn');
+ foreach my $dxchan (DXChannel::get_all()) {
+ next unless $dxchan->is_rbn;
+ dbg "RBN:STATS 10-minute $dxchan->{call} raw: $dxchan->{noraw10} sent: $dxchan->{norbn10} delivered: $dxchan->{nospot10} users: " . scalar keys %{$dxchan->{nousers10}};
+ $dxchan->{noraw10} = $dxchan->{norbn10} = $dxchan->{nospot10} = 0; $dxchan->{nousers10} = {};
+ }
+}
+
+sub per_hour
+{
+ foreach my $dxchan (DXChannel::get_all()) {
+ next unless $dxchan->is_rbn;
+ dbg "RBN:STATS hour $dxchan->{call} raw: $dxchan->{norawhour} sent: $dxchan->{norbnhour} delivered: $dxchan->{nospothour} users: " . scalar keys %{$dxchan->{nousershour}};
+ $dxchan->{norawhour} = $dxchan->{norbnhour} = $dxchan->{nospothour} = 0; $dxchan->{nousershour} = {};
+ }
+}
+
+sub finish
+{
+ write_cache();
+}
+
+sub write_cache
+{
+ my $fh = IO::File->new(">$cachefn") or confess("writing $cachefn $!");
+ $spots->{version} = $CACHE_VERSION;
+ my $s = $json->encode($spots);
+ $fh->print($s);
+ $fh->close;
+}
+
+sub check_cache
+{
+ if (-e $cachefn) {
+ my $mt = (stat($cachefn))[9];
+ my $t = $main::systime - $mt || 1;
+ my $p = difft($mt);
+ if ($t < $cache_valid) {
+ dbg("RBN:check_cache '$cachefn' spot cache exists, created $p ago and not too old");
+ my $fh = IO::File->new($cachefn);
+ my $s;
+ if ($fh) {
+ local $/ = undef;
+ $s = <$fh>;
+ dbg("RBN:check_cache cache read size " . length $s);
+ $fh->close;
+ } else {
+ dbg("RBN:check_cache file read error $!");
+ return undef;
+ }
+ if ($s) {
+ eval {$spots = $json->decode($s)};
+ if ($spots && ref $spots) {
+ my $version = $spots->{version} || 0;
+ unless ($version != $CACHE_VERSION) {
+ # wrong version number
+ dbg("RBN:check_cache version number mismatch got: $version want: $CACHE_VERSION, reseting");
+ $spots = {};
+ return undef;
+ }
+ dbg("RBN:check_cache spot cache restored");
+ return 1;
+ }
+ }
+ dbg("RBN::checkcache error decoding $@");
+ } else {
+ my $d = difft($main::systime-$cache_valid);
+ dbg("RBN::checkcache '$cachefn' created $p ago is too old (> $d), ignored");
+ }
+ } else {
+ dbg("RBN:check_cache '$cachefn' spot cache not present");
+ }
+
+ return undef;
+}
+
1;