108 lines
3.1 KiB
PHP
108 lines
3.1 KiB
PHP
<?php
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/**
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* Squid and Varnish cache purging.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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*/
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class SquidPurgeClientPool {
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/** @var array Array of SquidPurgeClient */
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protected $clients = [];
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/** @var int */
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protected $timeout = 5;
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/**
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* @param array $options
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*/
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function __construct( $options = [] ) {
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if ( isset( $options['timeout'] ) ) {
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$this->timeout = $options['timeout'];
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}
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}
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/**
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* @param SquidPurgeClient $client
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* @return void
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*/
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public function addClient( $client ) {
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$this->clients[] = $client;
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}
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public function run() {
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$done = false;
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$startTime = microtime( true );
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while ( !$done ) {
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$readSockets = $writeSockets = [];
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/**
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* @var $client SquidPurgeClient
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*/
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foreach ( $this->clients as $clientIndex => $client ) {
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$sockets = $client->getReadSocketsForSelect();
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foreach ( $sockets as $i => $socket ) {
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$readSockets["$clientIndex/$i"] = $socket;
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}
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$sockets = $client->getWriteSocketsForSelect();
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foreach ( $sockets as $i => $socket ) {
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$writeSockets["$clientIndex/$i"] = $socket;
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}
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}
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if ( !count( $readSockets ) && !count( $writeSockets ) ) {
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break;
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}
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$exceptSockets = null;
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$timeout = min( $startTime + $this->timeout - microtime( true ), 1 );
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Wikimedia\suppressWarnings();
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$numReady = socket_select( $readSockets, $writeSockets, $exceptSockets, $timeout );
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Wikimedia\restoreWarnings();
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if ( $numReady === false ) {
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wfDebugLog( 'squid', __METHOD__ . ': Error in stream_select: ' .
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socket_strerror( socket_last_error() ) . "\n" );
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break;
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}
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// Check for timeout, use 1% tolerance since we aimed at having socket_select()
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// exit at precisely the overall timeout
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if ( microtime( true ) - $startTime > $this->timeout * 0.99 ) {
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wfDebugLog( 'squid', __CLASS__ . ": timeout ({$this->timeout}s)\n" );
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break;
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} elseif ( !$numReady ) {
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continue;
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}
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foreach ( $readSockets as $key => $socket ) {
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list( $clientIndex, ) = explode( '/', $key );
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$client = $this->clients[$clientIndex];
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$client->doReads();
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}
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foreach ( $writeSockets as $key => $socket ) {
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list( $clientIndex, ) = explode( '/', $key );
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$client = $this->clients[$clientIndex];
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$client->doWrites();
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}
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$done = true;
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foreach ( $this->clients as $client ) {
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if ( !$client->isIdle() ) {
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$done = false;
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}
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}
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}
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foreach ( $this->clients as $client ) {
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$client->close();
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}
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}
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}
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