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DynDNS status widget async update

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The Dynamic DNS status widget performs remote operations to the www to check the cached dynamic DNS IP against the actual current public-facing IP. When an external link is slow, or particularly when the cable is plugged in (it seems up) but actually the internet is down, it takes a long time for a response from http://checkip.dyndns.com/ to time out. The dashboard page hangs in a half-drawn state (up to drawing the DynDNS status table) for up to 30 seconds.
This change puts the code that does these external operations into some ajax/Java script that runs after the dashboard has drawn up. Code concept unashamedly stolen from the system information widget.
This commit is contained in:
Phil Davis 2013-03-20 20:04:33 +05:45
parent ccc5f959ad
commit c1dcb7abe7
1 changed files with 56 additions and 18 deletions
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74
usr/local/www/widgets/widgets/dyn_dns_status.widget.php
View File

@ -1,8 +1,8 @@
<?php
/*
Original status page code from: services_dyndns.php
Copyright (C) 2008 Ermal Lu\xe7i
Edits to convert it to a widget: dyn_dns_status.php
Copyright (C) 2008 Ermal Luci
Edits to convert it to a widget: dyn_dns_status.widget.php
Copyright (C) 2013 Stanley P. Miller \ stan-qaz
All rights reserved.
@ -44,6 +44,33 @@ if (!is_array($config['dyndnses']['dyndns']))
$a_dyndns = &$config['dyndnses']['dyndns'];
if($_REQUEST['getdyndnsstatus']) {
$first_entry = true;
foreach ($a_dyndns as $dyndns) {
if ($first_entry)
$first_entry = false;
else
// Put a vertical bar delimiter between the echoed HTML for each entry processed.
echo "|";
$filename = "{$g['conf_path']}/dyndns_{$dyndns['interface']}{$dyndns['type']}" . escapeshellarg($dyndns['host']) . "{$dyndns['id']}.cache";
if (file_exists($filename)) {
$ipaddr = dyndnsCheckIP($dyndns['interface']);
$cached_ip_s = split(":", file_get_contents($filename));
$cached_ip = $cached_ip_s[0];
if ($ipaddr <> $cached_ip)
echo "<font color='red'>";
else
echo "<font color='green'>";
echo htmlspecialchars($cached_ip);
echo "</font>";
} else {
echo "N/A";
}
}
exit;
}
?>
<table width="100%" border="0" cellpadding="0" cellspacing="0">
@ -101,23 +128,34 @@ $a_dyndns = &$config['dyndnses']['dyndns'];
?>
</td>
<td class="listlr">
<?php
$filename = "{$g['conf_path']}/dyndns_{$dyndns['interface']}{$dyndns['type']}" . escapeshellarg($dyndns['host']) . "{$dyndns['id']}.cache";
if (file_exists($filename)) {
$ipaddr = dyndnsCheckIP($dyndns['interface']);
$cached_ip_s = split(":", file_get_contents($filename));
$cached_ip = $cached_ip_s[0];
if ($ipaddr <> $cached_ip)
echo "<font color='red'>";
else
echo "<font color='green'>";
echo htmlspecialchars($cached_ip);
echo "</font>";
} else {
echo "N/A";
}
?>
<div id='dyndnsstatus<?php echo $i; ?>'><?php echo gettext("Checking ..."); ?></div>
</td>
</tr>
<?php $i++; endforeach; ?>
</table>
<script type="text/javascript">
//<![CDATA[
function dyndns_getstatus() {
scroll(0,0);
var url = "/widgets/widgets/dyn_dns_status.widget.php";
var pars = 'getdyndnsstatus=yes';
jQuery.ajax(
url,
{
type: 'get',
data: pars,
complete: dyndnscallback
});
}
function dyndnscallback(transport) {
// The server returns a string of statuses separated by vertical bars
var responseStrings = transport.responseText.split("|");
for (var count=0; count<responseStrings.length; count++)
{
var divlabel = '#dyndnsstatus' + count;
jQuery(divlabel).prop('innerHTML',responseStrings[count]);
}
}
setTimeout('dyndns_getstatus()', 2000);
//]]>
</script>