<?php
/**
* See deferred.txt
+ * @file
+ * @ingroup Cache
*/
/**
- *
+ * Handles purging appropriate Squid URLs given a title (or titles)
+ * @ingroup Cache
*/
class SquidUpdate {
var $urlArr, $mMaxTitles;
}
static function newFromLinksTo( &$title ) {
- $fname = 'SquidUpdate::newFromLinksTo';
- wfProfileIn( $fname );
+ wfProfileIn( __METHOD__ );
# Get a list of URLs linking to this page
$dbr = wfGetDB( DB_SLAVE );
array( 'page_namespace', 'page_title' ),
array(
'pl_namespace' => $title->getNamespace(),
- 'pl_title' => $title->getDbKey(),
+ 'pl_title' => $title->getDBkey(),
'pl_from=page_id' ),
- $fname );
+ __METHOD__ );
$blurlArr = $title->getSquidURLs();
if ( $dbr->numRows( $res ) <= $this->mMaxTitles ) {
while ( $BL = $dbr->fetchObject ( $res ) )
}
$dbr->freeResult ( $res ) ;
- wfProfileOut( $fname );
+ wfProfileOut( __METHOD__ );
return new SquidUpdate( $blurlArr );
}
- static function newFromTitles( &$titles, $urlArr = array() ) {
+ /**
+ * Create a SquidUpdate from an array of Title objects, or a TitleArray object
+ */
+ static function newFromTitles( $titles, $urlArr = array() ) {
global $wgMaxSquidPurgeTitles;
- if ( count( $titles ) > $wgMaxSquidPurgeTitles ) {
- $titles = array_slice( $titles, 0, $wgMaxSquidPurgeTitles );
- }
+ $i = 0;
foreach ( $titles as $title ) {
$urlArr[] = $title->getInternalURL();
+ if ( $i++ > $wgMaxSquidPurgeTitles ) {
+ break;
+ }
}
return new SquidUpdate( $urlArr );
}
echo implode("<br />\n", $urlArr) . "<br />\n";
return;
}*/
-
- if( empty( $urlArr ) ) {
+
+ if( !$urlArr ) {
return;
}
return SquidUpdate::HTCPPurge( $urlArr );
}
- $fname = 'SquidUpdate::purge';
- wfProfileIn( $fname );
+ wfProfileIn( __METHOD__ );
- $maxsocketspersquid = 8; // socket cap per Squid
- $urlspersocket = 400; // 400 seems to be a good tradeoff, opening a socket takes a while
- $firsturl = SquidUpdate::expand( $urlArr[0] );
- unset($urlArr[0]);
- $urlArr = array_values($urlArr);
- $sockspersq = max(ceil(count($urlArr) / $urlspersocket ),1);
- if ($sockspersq == 1) {
- /* the most common case */
- $urlspersocket = count($urlArr);
- } else if ($sockspersq > $maxsocketspersquid ) {
- $urlspersocket = ceil(count($urlArr) / $maxsocketspersquid);
- $sockspersq = $maxsocketspersquid;
+ $maxSocketsPerSquid = 8; // socket cap per Squid
+ $urlsPerSocket = 400; // 400 seems to be a good tradeoff, opening a socket takes a while
+ $socketsPerSquid = ceil( count( $urlArr ) / $urlsPerSocket );
+ if ( $socketsPerSquid > $maxSocketsPerSquid ) {
+ $socketsPerSquid = $maxSocketsPerSquid;
}
- $totalsockets = count($wgSquidServers) * $sockspersq;
- $sockets = Array();
- /* this sets up the sockets and tests the first socket for each server. */
- for ($ss=0;$ss < count($wgSquidServers);$ss++) {
- $failed = false;
- $so = 0;
- while ($so < $sockspersq && !$failed) {
- if ($so == 0) {
- /* first socket for this server, do the tests */
- @list($server, $port) = explode(':', $wgSquidServers[$ss]);
- if(!isset($port)) $port = 80;
- #$this->debug("Opening socket to $server:$port");
- $error = $errstr = false;
- $socket = @fsockopen($server, $port, $error, $errstr, 3);
- #$this->debug("\n");
- if (!$socket) {
- $failed = true;
- $totalsockets -= $sockspersq;
- } else {
- $msg = 'PURGE ' . $firsturl . " HTTP/1.0\r\n".
- "Connection: Keep-Alive\r\n\r\n";
- #$this->debug($msg);
- @fputs($socket,$msg);
- #$this->debug("...");
- $res = @fread($socket,512);
- #$this->debug("\n");
- /* Squid only returns http headers with 200 or 404 status,
- if there's more returned something's wrong */
- if (strlen($res) > 250) {
- fclose($socket);
- $failed = true;
- $totalsockets -= $sockspersq;
- } else {
- @stream_set_blocking($socket,false);
- $sockets[] = $socket;
- }
- }
- } else {
- /* open the remaining sockets for this server */
- list($server, $port) = explode(':', $wgSquidServers[$ss]);
- if(!isset($port)) $port = 80;
- $sockets[$so+1] = @fsockopen($server, $port, $error, $errstr, 2);
- @stream_set_blocking($sockets[$so+1],false);
+ $pool = new SquidPurgeClientPool;
+ $chunks = array_chunk( $urlArr, ceil( count( $urlArr ) / $socketsPerSquid ) );
+ foreach ( $wgSquidServers as $server ) {
+ foreach ( $chunks as $chunk ) {
+ $client = new SquidPurgeClient( $server );
+ foreach ( $chunk as $url ) {
+ $client->queuePurge( $url );
}
- $so++;
+ $pool->addClient( $client );
}
}
+ $pool->run();
- if ($urlspersocket > 0) {
- /* now do the heavy lifting. The fread() relies on Squid returning only the headers */
- for ($r=0;$r < $urlspersocket;$r++) {
- for ($s=0;$s < $totalsockets;$s++) {
- if($r != 0) {
- $res = '';
- $esc = 0;
- while (strlen($res) < 100 && $esc < 200 ) {
- $res .= @fread($sockets[$s],512);
- $esc++;
- usleep(20);
- }
- }
- $urindex = $r + $urlspersocket * ($s - $sockspersq * floor($s / $sockspersq));
- $url = SquidUpdate::expand( $urlArr[$urindex] );
- $msg = 'PURGE ' . $url . " HTTP/1.0\r\n".
- "Connection: Keep-Alive\r\n\r\n";
- #$this->debug($msg);
- @fputs($sockets[$s],$msg);
- #$this->debug("\n");
- }
- }
- }
- #$this->debug("Reading response...");
- foreach ($sockets as $socket) {
- $res = '';
- $esc = 0;
- while (strlen($res) < 100 && $esc < 200 ) {
- $res .= @fread($socket,1024);
- $esc++;
- usleep(20);
- }
-
- @fclose($socket);
- }
- #$this->debug("\n");
- wfProfileOut( $fname );
+ wfProfileOut( __METHOD__ );
}
static function HTCPPurge( $urlArr ) {
global $wgHTCPMulticastAddress, $wgHTCPMulticastTTL, $wgHTCPPort;
- $fname = 'SquidUpdate::HTCPPurge';
- wfProfileIn( $fname );
+ wfProfileIn( __METHOD__ );
$htcpOpCLR = 4; // HTCP CLR
}
// pfsockopen doesn't work because we need set_sock_opt
- $conn = socket_create( AF_INET, SOCK_DGRAM, SOL_UDP );
+ $conn = socket_create( AF_INET, SOCK_DGRAM, SOL_UDP );
if ( $conn ) {
// Set socket options
socket_set_option( $conn, IPPROTO_IP, IP_MULTICAST_LOOP, 0 );
foreach ( $urlArr as $url ) {
if( !is_string( $url ) ) {
- wfDebugDieBacktrace( 'Bad purge URL' );
+ throw new MWException( 'Bad purge URL' );
}
$url = SquidUpdate::expand( $url );
-
+
// Construct a minimal HTCP request diagram
// as per RFC 2756
// Opcode 'CLR', no response desired, no auth
}
} else {
$errstr = socket_strerror( socket_last_error() );
- wfDebug( "SquidUpdate::HTCPPurge(): Error opening UDP socket: $errstr\n" );
+ wfDebug( __METHOD__ . "(): Error opening UDP socket: $errstr\n" );
}
- wfProfileOut( $fname );
+ wfProfileOut( __METHOD__ );
}
- function debug( $text ) {
- global $wgDebugSquid;
- if ( $wgDebugSquid ) {
- wfDebug( $text );
- }
- }
-
/**
* Expand local URLs to fully-qualified URLs using the internal protocol
* and host defined in $wgInternalServer. Input that's already fully-
return $url;
}
}
-
scripts.mit.edu / autoinstallsdev / mediawiki.git / blobdiff