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use caching in geonames plugin

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This commit is contained in:
Evan Prodromou 2009-11-20 07:58:28 -08:00
parent 224d82793c
commit 85ec057422
1 changed files with 86 additions and 1 deletions
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87
plugins/GeonamesPlugin.php
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@ -63,6 +63,14 @@ class GeonamesPlugin extends Plugin
function onLocationFromName($name, $language, &$location)
{
$loc = $this->getCache(array('name' => $name,
'language' => $language));
if (!empty($loc)) {
$location = $loc;
return false;
}
$client = HTTPClient::start();
// XXX: break down a name by commas, narrow by each
@ -87,6 +95,10 @@ class GeonamesPlugin extends Plugin
$location->location_id = $n->geonameId;
$location->location_ns = self::LOCATION_NS;
$this->setCache(array('name' => $name,
'language' => $language),
$location);
// handled, don't continue processing!
return false;
}
@ -114,6 +126,13 @@ class GeonamesPlugin extends Plugin
return true;
}
$loc = $this->getCache(array('id' => $id));
if (!empty($loc)) {
$location = $loc;
return false;
}
$client = HTTPClient::start();
$str = http_build_query(array('geonameId' => $id,
@ -148,6 +167,9 @@ class GeonamesPlugin extends Plugin
$location->lat = $last->lat;
$location->lon = $last->lng;
$location->names[$language] = implode(', ', array_reverse($parts));
$this->setCache(array('id' => $last->geonameId),
$location);
}
}
@ -173,6 +195,14 @@ class GeonamesPlugin extends Plugin
function onLocationFromLatLon($lat, $lon, $language, &$location)
{
$loc = $this->getCache(array('lat' => $lat,
'lon' => $lon));
if (!empty($loc)) {
$location = $loc;
return false;
}
$client = HTTPClient::start();
$str = http_build_query(array('lat' => $lat,
@ -211,6 +241,10 @@ class GeonamesPlugin extends Plugin
$location->names[$language] = implode(', ', $parts);
$this->setCache(array('lat' => $lat,
'lon' => $lon),
$location);
// Success! We handled it, so no further processing
return false;
@ -242,9 +276,17 @@ class GeonamesPlugin extends Plugin
return true;
}
$n = $this->getCache(array('id' => $location->location_id,
'language' => $language));
if (!empty($n)) {
$name = $n;
return false;
}
$client = HTTPClient::start();
$str = http_build_query(array('geonameId' => $id,
$str = http_build_query(array('geonameId' => $location->location_id,
'lang' => $language));
$result = $client->get('http://ws.geonames.org/hierarchyJSON?'.$str);
@ -271,6 +313,9 @@ class GeonamesPlugin extends Plugin
if (count($parts)) {
$name = implode(', ', array_reverse($parts));
$this->setCache(array('id' => $location->location_id,
'language' => $language),
$name);
return false;
}
}
@ -326,4 +371,44 @@ class GeonamesPlugin extends Plugin
// it's been filled, so don't process further.
return false;
}
function getCache($attrs)
{
$c = common_memcache();
if (!$c) {
return null;
}
return $c->get($this->cacheKey($attrs));
}
function setCache($attrs, $loc)
{
$c = common_memcache();
if (!$c) {
return null;
}
$c->set($this->cacheKey($attrs), $loc);
}
function clearCache($attrs)
{
$c = common_memcache();
if (!$c) {
return null;
}
$c->delete($this->cacheKey($attrs));
}
function cacheKey($attrs)
{
return common_cache_key('geonames:'.
implode(',', array_keys($attrs)) . ':'.
common_keyize(implode(',', array_values($attrs))));
}
}