/**
* Parse and trim raw timeline data.
* Remove everything before the first non-timeline event.
*
* @param mixed $json
* @param mixed $events
*/
function ParseDevToolsEvents(&$json, &$events, $filter, $removeParams, &$startOffset)
{
$START_MESSAGE = '"WPT start"';
$STOP_MESSAGE = '"WPT stop"';
$hasNet = strpos($json, '"Network.') !== false ? true : false;
$hasTimeline = strpos($json, '"Timeline.eventRecorded"') !== false ? true : false;
$hasTrim = strpos($json, $START_MESSAGE) !== false ? true : false;
$messages = json_decode($json, true, 100000);
unset($json);
$firstEvent = null;
$recording = $hasTrim ? false : true;
$recordPending = false;
$events = array();
$startOffset = null;
$previousTime = null;
$clockOffset = null;
// First go and match up the first net event with the matching timeline event
// to sync the clocks (recent Chrome builds use different clocks)
if ($hasNet && $hasTimeline) {
foreach ($messages as $message) {
if (is_array($message) && isset($message['method']) && isset($message['params']['timestamp']) && isset($message['params']['request']['url']) && strlen($message['params']['request']['url']) && $message['method'] == 'Network.requestWillBeSent') {
$firstNetEventTime = $message['params']['timestamp'] * 1000.0;
$firstNetEventURL = json_encode($message['params']['request']['url']);
break;
}
}
if (isset($firstNetEventTime) && isset($firstNetEventURL)) {
foreach ($messages as $message) {
if (is_array($message) && isset($message['method']) && isset($message['params']['record']['startTime']) && $message['method'] == 'Timeline.eventRecorded') {
$json = json_encode($message);
if (strpos($json, $firstNetEventURL) !== false) {
$timelineEventTime = $message['params']['record']['startTime'];
$firstEvent = $timelineEventTime;
break;
}
}
}
}
if (isset($firstNetEventTime) && isset($timelineEventTime)) {
$clockOffset = $timelineEventTime - $firstNetEventTime;
$firstEvent = min($firstEvent, $firstNetEventTime + $clockOffset);
}
}
if (!$firstEvent && $hasTimeline) {
foreach ($messages as $message) {
if (is_array($message) && isset($message['method'])) {
$eventTime = DevToolsEventTime($message);
$json = json_encode($message);
if (strpos($json, '"type":"Resource') !== false) {
$firstEvent = $eventTime;
break;
}
}
}
}
if (!$firstEvent && $hasNet && isset($messages) && is_array($messages)) {
foreach ($messages as $message) {
if (is_array($message) && isset($message['method'])) {
$eventTime = DevToolsEventTime($message);
$method_class = substr($message['method'], 0, strpos($message['method'], '.'));
if ($eventTime && $method_class === 'Network') {
$firstEvent = $eventTime * 1000.0;
break;
}
}
}
}
if (isset($messages) && is_array($messages)) {
foreach ($messages as $message) {
if (is_array($message)) {
if (isset($message['params']['timestamp'])) {
$message['params']['timestamp'] *= 1000.0;
if (isset($clockOffset)) {
$message['params']['timestamp'] += $clockOffset;
}
}
// see if we are waiting for the first net message after a WPT Start
if ($recordPending && array_key_exists('method', $message)) {
$method_class = substr($message['method'], 0, strpos($message['method'], '.'));
if ($method_class === 'Network' || $method_class === 'Page') {
$recordPending = false;
$recording = true;
}
}
// see if we got a stop message (do this before capture so we don't include it)
if ($recording && $hasTrim) {
$encoded = json_encode($message);
if (strpos($encoded, $STOP_MESSAGE) !== false) {
$recording = false;
}
}
// keep any events that we need to keep
if ($recording && isset($firstEvent)) {
if (DevToolsMatchEvent($filter, $message, $firstEvent)) {
if ($hasTrim && !isset($startOffset) && $firstEvent) {
$eventTime = DevToolsEventTime($message);
if ($eventTime) {
$startOffset = $eventTime - $firstEvent;
}
}
if ($removeParams && array_key_exists('params', $message)) {
$event = $message['params'];
$event['method'] = $message['method'];
$events[] = $event;
} else {
$events[] = $message;
}
}
}
// see if we got a start message (do this after capture so we don't include it)
if (!$recording && !$recordPending && $hasTrim) {
$encoded = json_encode($message);
if (strpos($encoded, $START_MESSAGE) !== false) {
$recordPending = true;
}
}
}
}
}
}
/**
* Parse and trim raw timeline data.
* Remove everything before the first non-timeline event.
*
* @param mixed $json
* @param mixed $events
*/
function ParseDevToolsEvents(&$json, &$events, $filter, $removeParams, &$startOffset, $multistep = false)
{
$messages = json_decode($json, true);
// invalid json means we fail
if (!$messages) {
return;
}
$step = array();
$startOffset = null;
$foundFirstEvent = false;
$foundHookPage = false;
$mainFrameId = null;
// the frame id of the hook page blank2.html gives us the id for the main frame
$events = array();
// list of events for each step
foreach ($messages as $entry) {
$message = $entry['message'];
if (isset($message['params']['timestamp'])) {
$message['params']['timestamp'] *= 1000.0;
}
if (!$foundFirstEvent && isset($message['method']) && isset($message['params']['timestamp']) && isset($message['params']['request']['url']) && strlen($message['params']['request']['url']) && $message['method'] == 'Network.requestWillBeSent') {
// The first page of the webdriver session is the one that is loaded after the blank2.html page loaded
// by the Chrome extension
if (!$foundHookPage) {
if ($message['params']['documentURL'] == 'http://127.0.0.1:8888/blank2.html') {
$foundHookPage = true;
$mainFrameId = $message['params']['frameId'];
}
} else {
// Skip other requests on the hook page or generated by Chrome
// home page
if ($message['params']['documentURL'] == 'http://127.0.0.1:8888/blank2.html' || preg_match("/(https:\\/\\/www.google.com\\/_\\/chrome\\/newtab|chrome-search:\\/\\/)/", $message['params']['documentURL'])) {
continue;
}
$foundFirstEvent = true;
}
}
if ($foundFirstEvent) {
if ($multistep && isset($message['method']) && $message['method'] == "Page.frameStartedLoading" && isset($message['params']['frameId']) && $message['params']['frameId'] === $mainFrameId) {
$events[] = $step;
$step = array();
continue;
}
if (DevToolsMatchEvent($filter, $message)) {
if ($removeParams && array_key_exists('params', $message)) {
$event = $message['params'];
$event['method'] = $message['method'];
$step[] = $event;
} else {
$step[] = $message;
}
}
}
}
if ($multistep) {
$events[] = $step;
} else {
$events = $step;
}
}
