use IO::File;
use DXDebug;
use DXDupe;
+use Time::HiRes qw(gettimeofday tv_interval);
use strict;
$dirprefix = "$main::local_data/wwv";
$param = "$dirprefix/param";
+our $maxcache = 10;
+our @cache;
+
+
$filterdef = bless ([
# tag, sort, field, priv, special parser
['by', 'c', 0],
{
$fp = DXLog::new('wwv', 'dat', 'm');
do "$param" if -e "$param";
+ # read in existing data
+ my $t0 = [gettimeofday];
+ @cache = readfile($main::systime);
+ shift @cache while @cache > $maxcache;
+ dbg(sprintf "WWV read in last %d records into cache in %dmS", scalar @cache, _diffms($t0));
confess $@ if $@;
}
close $fh;
# log it
- $fp->writeunix($date, "$from^$date^$sfi^$a^$k^$forecast^$node^$r");
+ my $s ="$from^$date^$sfi^$a^$k^$forecast^$node^$r";
+ $fp->writeunix($date, $s);
+ push @cache, [ split /\^/, $s ];
+ shift @cache while @cache > $maxcache;
}
# update WWV info in one go (usually from a PC23)
{
my $from = shift;
my $to = shift;
- my $date = $fp->unixtoj(shift);
+ my $t = shift;
+ my $date = $fp->unixtoj($t);
my $pattern = shift;
my $search;
my @out;
my $eval;
my $count;
-
- $search = 1;
- $eval = qq(
+
+ if ($t == $main::systime && ($to <= $maxcache)) {
+ dbg("using wwv cache") if isdbg('wwv');
+ @out = reverse @cache;
+ pop @out while @out > $to;
+ } else {
+ dbg("using wwv file(s))") if isdbg('wwv');
+ $search = 1;
+ $eval = qq(
my \$c;
my \$ref;
for (\$c = \$#in; \$c >= 0; \$c--) {
}
);
- $fp->close; # close any open files
-
- my $fh = $fp->open($date);
- for ($count = 0; $count < $to; ) {
- my @in = ();
- if ($fh) {
- while (<$fh>) {
- chomp;
- push @in, [ split '\^' ] if length > 2;
+ $fp->close; # close any open files
+
+ my $fh = $fp->open($date);
+ for ($count = 0; $count < $to; ) {
+ my @in = ();
+ if ($fh) {
+ while (<$fh>) {
+ chomp;
+ push @in, [ split '\^' ] if length > 2;
+ }
+ eval $eval; # do the search on this file
+ return ("Geomag search error", $@) if $@;
+ last if $count >= $to; # stop after n
}
- eval $eval; # do the search on this file
- return ("Geomag search error", $@) if $@;
- last if $count >= $to; # stop after n
+ $fh = $fp->openprev(); # get the next file
+ last if !$fh;
}
- $fh = $fp->openprev(); # get the next file
- last if !$fh;
}
return @out;