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cache astext to reduce number of dns queries

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git-svn-id: http://www.observium.org/svn/observer/trunk@654 61d68cd4-352d-0410-923a-c4978735b2b8
This commit is contained in:
Tom Laermans
2010-01-10 14:48:00 +00:00
parent cc806f2236
commit 6e9d02a8ce
1 changed files with 12 additions and 4 deletions
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includes/functions.php
+12 -4
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@@ -733,7 +733,7 @@ function discover_process_ipv6($ifIndex,$ipv6_address,$ipv6_prefixlen,$ipv6_orig
function get_astext($asn)
{
global $config;
global $config,$cache;
if (isset($config['astext'][$asn]))
{
@@ -741,9 +741,17 @@ function get_astext($asn)
}
else
{
$result = dns_get_record("AS$asn.asn.cymru.com",DNS_TXT);
$txt = explode('|',$result[0]['txt']);
return trim(str_replace('"', '', $txt[4]));
if (isset($cache['astext'][$asn]))
{
return $cache['astext'][$asn];
}
else
{
$result = dns_get_record("AS$asn.asn.cymru.com",DNS_TXT);
$txt = explode('|',$result[0]['txt']);
$cache['astext'][$asn] = $txt[4];
return trim(str_replace('"', '', $txt[4]));
}
}
}