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PhutilServiceProfiler.php
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Tue, Dec 3, 20:16

PhutilServiceProfiler.php
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<?php
/**
* Simple event store for service calls, so they can be printed to stdout or
* displayed in a debug console.
*/
final class PhutilServiceProfiler extends Phobject {
private static $instance;
private $listeners = array();
private $events = array();
private $logSize = 0;
private $discardMode = false;
private $collectStackTraces;
private $zeroTime;
private function __construct() {}
public function enableDiscardMode() {
$this->discardMode = true;
}
public function setCollectStackTraces($collect_stack_traces) {
$this->collectStackTraces = $collect_stack_traces;
return $this;
}
public function getCollectStackTraces() {
return $this->collectStackTraces;
}
public static function getInstance() {
if (empty(self::$instance)) {
self::$instance = new PhutilServiceProfiler();
}
return self::$instance;
}
public function beginServiceCall(array $data) {
$data['begin'] = microtime(true);
if ($this->collectStackTraces) {
$trace = debug_backtrace();
$trace = PhutilErrorHandler::formatStacktrace($trace);
$data['trace'] = $trace;
}
$id = $this->logSize++;
$this->events[$id] = $data;
foreach ($this->listeners as $listener) {
call_user_func($listener, 'begin', $id, $data);
}
return $id;
}
public function endServiceCall($call_id, array $data) {
$data = ($this->events[$call_id] + $data);
$data['end'] = microtime(true);
$data['duration'] = ($data['end'] - $data['begin']);
$this->events[$call_id] = $data;
foreach ($this->listeners as $listener) {
call_user_func($listener, 'end', $call_id, $data);
}
if ($this->discardMode) {
unset($this->events[$call_id]);
}
}
public function getServiceCallLog() {
return $this->events;
}
public function addListener($callback) {
$this->listeners[] = $callback;
}
public static function installEchoListener() {
$instance = self::getInstance();
$instance->addListener(array(__CLASS__, 'echoListener'));
}
public static function echoListener($type, $id, $data) {
$is_begin = false;
$is_end = false;
switch ($type) {
case 'begin':
$is_begin = true;
$mark = '>>>';
break;
case 'end':
$is_end = true;
$mark = '<<<';
break;
default:
$mark = null;
break;
}
$type = idx($data, 'type', 'mystery');
$desc = null;
if ($is_begin) {
switch ($type) {
case 'connect':
$desc = $data['database'];
break;
case 'query':
$desc = substr($data['query'], 0, 512);
break;
case 'multi-query':
$desc = array();
foreach ($data['queries'] as $query) {
$desc[] = substr($query, 0, 256);
}
$desc = implode('; ', $desc);
break;
case 'exec':
$desc = '$ '.$data['command'];
break;
case 'conduit':
if (isset($data['size'])) {
$desc = $data['method'].'() ';
$desc .= pht('<bytes = %s>', new PhutilNumber($data['size']));
} else {
$desc = $data['method'].'()';
}
break;
case 'http':
if (isset($data['proxy'])) {
$proxy = phutil_censor_credentials($data['proxy']);
} else {
$proxy = null;
}
$uri = phutil_censor_credentials($data['uri']);
if (strlen($proxy)) {
$desc = "{$proxy} >> {$uri}";
} else {
$desc = $uri;
}
break;
case 'lint':
$desc = $data['linter'];
if (isset($data['paths'])) {
$desc .= ' '.pht('<paths = %s>', phutil_count($data['paths']));
}
break;
case 'lock':
$desc = $data['name'];
break;
case 'event':
$desc = $data['kind'].' ';
$desc .= pht('<listeners = %s>', new PhutilNumber($data['count']));
break;
case 'ldap':
$call = idx($data, 'call', '?');
$params = array();
switch ($call) {
case 'connect':
$params[] = $data['host'].':'.$data['port'];
break;
case 'start-tls':
break;
case 'bind':
$params[] = $data['user'];
break;
case 'search':
$params[] = $data['dn'];
$params[] = $data['query'];
break;
default:
$params[] = '?';
break;
}
$desc = "{$call} (".implode(', ', $params).")";
break;
}
} else if ($is_end) {
$desc = pht(
'%s us',
new PhutilNumber((int)(1000000 * $data['duration'])));
}
$instance = self::getInstance();
if (!$instance->zeroTime) {
$instance->zeroTime = microtime(true);
}
$elapsed = microtime(true) - $instance->zeroTime;
$console = PhutilConsole::getConsole();
$console->writeLog(
"%s [%s] (+%s) <%s> %s\n",
$mark,
$id,
pht('%s', new PhutilNumber((int)(1000 * $elapsed))),
$type,
self::escapeProfilerStringForDisplay($desc));
}
private static function escapeProfilerStringForDisplay($string) {
// Convert tabs and newlines to spaces and collapse blocks of whitespace,
// most often formatting in queries.
$string = preg_replace('/\s{2,}/', ' ', $string);
// Replace sequences of binary characters with printable text. We allow
// some printable characters to appear in between unprintable characters
// to try to collapse the entire run.
$string = preg_replace(
'/[\x00-\x1F\x7F-\xFF](.{0,12}[\x00-\x1F\x7F-\xFF])*/',
'<...binary data...>',
$string);
return $string;
}
}

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