165 lines
4.1 KiB
PHP
Executable File
165 lines
4.1 KiB
PHP
Executable File
#!/usr/bin/env php
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<?php
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/* Check that the memcache library is enabled. */
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if(!class_exists('Memcache')) {
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echo("Error: the memcache library appears to be unavailable.\n");
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echo("\n");
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echo("This is most likely because PHP doesn't load it for the command line\n");
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echo("version. You probably need to enable it somehow.\n");
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echo("\n");
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if(is_dir('/etc/php5/cli/conf.d')) {
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echo("It is possible that running the following command as root will fix it:\n");
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echo(" echo 'extension=memcache.so' >/etc/php5/cli/conf.d/memcache.ini\n");
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}
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exit(1);
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}
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/* This is the base directory of the simpleSAMLphp installation. */
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$baseDir = dirname(dirname(__FILE__));
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/* Add library autoloader. */
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require_once($baseDir . '/lib/_autoload.php');
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/* Initialize the configuration. */
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$configdir = $baseDir . '/config';
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SimpleSAML_Configuration::setConfigDir($configdir);
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/* Things we should warn the user about. */
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$warnServerDown = 0;
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$warnBigSlab = 0;
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/* We use the stats interface to determine which servers exists. */
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$stats = SimpleSAML_Memcache::getRawStats();
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$keys = array();
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foreach($stats as $group) {
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foreach($group as $server => $state) {
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if($state === FALSE) {
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echo("WARNING: Server " . $server . " is down.\n");
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$warnServerDown++;
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continue;
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}
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$items = $state['curr_items'];
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echo("Server " . $server . " has " . $items . " items.\n");
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$serverKeys = getServerKeys($server);
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$keys = array_merge($keys, $serverKeys);
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}
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}
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echo("Total number of keys: " . count($keys) . "\n");
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$keys = array_unique($keys);
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echo("Total number of unique keys: " . count($keys) . "\n");
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echo("Starting synchronization.\n");
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$skipped = 0;
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$sync = 0;
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foreach($keys as $key) {
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$res = SimpleSAML_Memcache::get($key);
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if($res === NULL) {
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$skipped += 1;
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} else {
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$sync += 1;
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}
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}
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echo("Synchronization done.\n");
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echo($sync . " keys in sync.\n");
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if($skipped > 0) {
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echo($skipped . " keys skipped.\n");
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echo("Keys are skipped because they are either expired, or are of a type unknown\n");
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echo("to simpleSAMLphp.\n");
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}
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if($warnServerDown > 0) {
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echo("WARNING: " . $warnServerDown . " server(s) down. Not all servers are synchronized.\n");
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}
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if($warnBigSlab > 0) {
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echo("WARNING: " . $warnBigSlab . " slab(s) may have contained more keys than we were told about.\n");
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}
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/**
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* Fetch all keys available in an server.
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*
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* @param $server The server, as a string with <hostname>:<port>.
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* @return An array with all the keys available on the server.
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*/
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function getServerKeys($server) {
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$server = explode(':', $server);
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$host = $server[0];
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$port = (int)$server[1];
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echo("Connecting to: " . $host . ":" . $port . "\n");
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$socket = fsockopen($host, $port);
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echo("Connected. Finding keys.\n");
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if(fwrite($socket, "stats slabs\r\n") === FALSE) {
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echo("Error requesting slab dump from server.\n");
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exit(1);
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}
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/* Read list of slabs. */
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$slabs = array();
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while( ($line = fgets($socket)) !== FALSE) {
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$line = rtrim($line);
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if($line === 'END') {
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break;
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}
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if(preg_match('/^STAT (\d+):/', $line, $matches)) {
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$slab = (int)$matches[1];
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if(!in_array($slab, $slabs, TRUE)) {
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$slabs[] = $slab;
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}
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}
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}
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/* Dump keys in slabs. */
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$keys = array();
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foreach($slabs as $slab) {
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if(fwrite($socket, "stats cachedump " . $slab . " 1000000\r\n") === FALSE) {
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echo("Error requesting cache dump from server.\n");
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exit(1);
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}
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/* We keep track of the result size, to be able to warn the user if it is
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* so big that keys may have been lost.
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*/
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$resultSize = 0;
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while( ($line = fgets($socket)) !== FALSE) {
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$resultSize += strlen($line);
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$line = rtrim($line);
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if($line === 'END') {
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break;
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}
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if(preg_match('/^ITEM (.*) \[\d+ b; \d+ s\]/', $line, $matches)) {
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$keys[] = $matches[1];
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} else {
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echo("Unknown result from cache dump: " . $line . "\n");
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}
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}
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if($resultSize > 1900000 || count($keys) >= 1000000) {
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echo("WARNING: Slab " . $slab . " on server " . $host . ":" . $port .
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" may have contained more keys than we were told about.\n");
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$GLOBALS['warnBigSlab'] += 1;
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}
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}
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echo("Found " . count($keys) . " key(s).\n");
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fclose($socket);
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return $keys;
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}
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?>
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