+sub TO_JSON { return { %{ shift() } }; }
+
+sub write_cache
+{
+ my $json = DXJSON->new;
+ $json->canonical(isdbg('routecache'));
+
+ my $ta = [ gettimeofday ];
+ my @s;
+ eval {
+ while (my ($k, $v) = each %list) {
+ push @s, "$k:" . $json->encode($v) . "\n";
+ }
+ };
+ if (!$@ && @s) {
+ my $fh = IO::File->new(">$cachefn") or dbg("Route::Node: Error writing $cachefn $!"), return;
+ print $fh "$_" for (sort @s);
+ $fh->close;
+ } else {
+ dbg("Route::Node::write_cache error '$@'");
+ return;
+ }
+ $json->indent(0)->canonical(0);
+ my $diff = _diffms($ta);
+ dbg("Route::Node::write_cache time to write: $diff mS");
+}
+
+sub read_cache
+{
+ my $json = DXJSON->new;
+ $json->canonical(isdbg('routecache'));
+
+ my $ta = [ gettimeofday ];
+ my $count;
+
+ my $fh = IO::File->new("$cachefn") or dbg("Route::Node ERROR reading $cachefn $!"), return;
+ while (my $l = <$fh>) {
+ chomp $l;
+ my ($k, $v) = split /:/, $l, 2;
+ $list{$k} = bless $json->decode($v) or carp("Route::Node json error $! decoding '$v'"), next;
+ ++$count;
+ }
+ $fh->close if $fh;;
+
+ my $diff = _diffms($ta);
+ dbg("Route::Node::read_cache time to read $count records from $cachefn : $diff mS");
+}
+