+sub fetch_iotcore(@) {
+ my $host = shift;
+ my $adr = shift;
+ my $mask = shift;
+
+ my $ua = LWP::UserAgent->new;
+ $ua->timeout(1);
+
+ my $iotcore_req = {
+ cid => 1,
+ code => 10,
+ adr => $adr,
+ };
+
+ my $req = HTTP::Request->new(POST => "http://${host}");
+ $req->content_type('application/json');
+ $req->content(encode_json($iotcore_req));
+
+ my $resp = $ua->request($req);
+ return undef if (!$resp->is_success);
+
+ my $pdin = decode_json($resp->decoded_content);
+ return undef if (!defined($pdin));
+
+ my $value = hex($pdin->{'data'}->{'value'});
+
+ if (defined($mask)) {
+ $value = $value & $mask;
+ }
+
+ $value;
+}
+
+sub dayGraphFunc {
+ my $dataSrc = shift;
+ my $mode = shift;
+ my $color = shift;
+ my $label = shift;
+ my $dataPoints = shift;
+ my @args = ();
+ push @args, "CDEF:prev${mode}1=PREV(${dataSrc})";
+ for (my $i = 1; $i < $dataPoints - 1; ++$i) {
+ my $prev = $i;
+ my $next = $i+1;
+ push @args, "CDEF:prev${mode}${next}=PREV(prev${mode}${prev})";
+ }
+ my $dayCons = '';
+ my $consFunc = '';
+ if ($mode ne 'AVG') {
+ for (my $i = 1; $i < $dataPoints; ++$i) {
+ $dayCons .= "prev${mode}${i},";
+ $consFunc .= ",${mode}";
+ }
+ } else {
+ for (my $i = 1; $i < $dataPoints; ++$i) {
+ $dayCons .= "prev${mode}${i},";
+ }
+ $consFunc = ",${dataPoints},${mode}";
+ }
+ push @args, "CDEF:day${mode}=${dayCons}${dataSrc}${consFunc}";
+ push @args, "CDEF:fillCalDay${mode}0=COUNT,${dataPoints},%,0,EQ,day${mode},UNKN,IF";
+ for (my $i = 1; $i < $dataPoints; ++$i) {
+ my $prev = $i-1;
+ my $next = $i;
+ push @args, "CDEF:fillCalDay${mode}${next}=PREV(fillCalDay${mode}${prev})";
+ }
+ my $fillPoint = '';
+ my $if = '';
+ for (my $i = 0; $i < $dataPoints; ++$i) {
+ $fillPoint .= "COUNT,${dataPoints},%,${i},EQ,fillCalDay${mode}${i},";
+ $if .= ",IF";
+ }
+ push @args, "CDEF:${mode}Curve=${fillPoint}UNKN${if}";
+ my $forwardShift = (24*60*60) * ($dataPoints - 1) / $dataPoints;
+ push @args, "SHIFT:${mode}Curve:-${forwardShift}";
+ push @args, "LINE1:${mode}Curve#${color}:${label}";
+ return \@args;
+}
+
+sub cfgToGraphDef {
+ my $cfg = shift;
+ my $varname = shift;
+ my $dpPerDay= shift;
+ my @graphDef = ();
+ foreach my $subGraph (@$cfg) {
+ if ($subGraph eq 'avg') {
+ push @graphDef, "LINE1:${varname}-avg#FF0000";
+ } elsif ($subGraph eq 'day-min') {
+ push @graphDef, @{dayGraphFunc("${varname}-min", 'MIN', '0000ff', 'Day Minimum Temperature', $dpPerDay)};
+ } elsif ($subGraph eq 'day-max') {
+ push @graphDef, @{dayGraphFunc("${varname}-max", 'MAX', '00ff00', 'Day Maximum Temperature', $dpPerDay)};
+ } elsif ($subGraph eq 'day-avg') {
+ push @graphDef, @{dayGraphFunc("${varname}-houravg", 'AVG', 'ff0000', 'Day Average Temperature', $dpPerDay)};
+ }
+ }
+ return \@graphDef;
+}
+