Wordpress Sentry performance integration mu-plugin

wp-sentry-integration.php

<?php

/**
 * This is a modified mu-plugin for wp-sentry that enables Sentry Performance albeit it doesn't show the stacktrace 
 * Plugin Name: WordPress Sentry
 * Plugin URI: https://github.com/stayallive/wp-sentry
 * Description: A (unofficial) WordPress plugin to report PHP and JavaScript errors to Sentry.
 * Version: must-use-proxy
 * License: MIT
 */
$wp_sentry = __DIR__ . '/../plugins/wp-sentry-integration/wp-sentry.php';

if (!file_exists($wp_sentry)) {
    trigger_error('Sentry is not being mu-loaded because the plugin files are not there');
    return;
}

require $wp_sentry;

define( 'WP_SENTRY_MU_LOADED', true );

/*
 * Sentry performance activation for wordpress
 */
$sentryDsn = defined('WP_SENTRY_DSN') && (WP_SENTRY_DSN !== false);
$sentryTracingRate = defined('WP_SENTRY_TRACES_SAMPLE_RATE') ? WP_SENTRY_TRACES_SAMPLE_RATE : false;
if ($sentryDsn && is_numeric($sentryTracingRate) && $sentryTracingRate != 0) {
    /*
     * First we modify the current hub so the new transaction is attached to it.
     */
    wp_sentry_safe(function (\Sentry\State\HubInterface $sentryHub) {
        $rate = WP_SENTRY_TRACES_SAMPLE_RATE ?? 0;
        $sentryHub->getClient()->getOptions()->setTracesSampleRate($rate);
        \Sentry\SentrySdk::setCurrentHub($sentryHub);
    });
    $transactionContext = new \Sentry\Tracing\TransactionContext();
    $transactionContext->setName($_SERVER['REQUEST_URI']);
    $transactionContext->setOp('http.server');
    $transactionContext->setData([
        'url' => $_SERVER['REQUEST_URI'] ?? 'no_url',
        'method' => strtoupper($_SERVER['REQUEST_METHOD'] ?? '')
    ]);
    $transactionContext->setStartTimestamp($_SERVER['REQUEST_TIME_FLOAT'] ?? null);
    $transaction = \Sentry\startTransaction($transactionContext);
    /*
    * We create a span for our transaction (is this ok?)
    */
    $spanContext = new \Sentry\Tracing\SpanContext();
    $spanContext->setOp('wordpress');
    $GLOBALS['SENTRY_PERFORMANCE_TRANSACTION'] = $transaction;
    $GLOBALS['SENTRY_PERFORMANCE_SPAN'] = $transaction->startChild($spanContext);
  
    /*
    * On wp shutdown, we finalize the transaction.
    */
    add_action('shutdown', function () {
        $sentryTransaction = $GLOBALS['SENTRY_PERFORMANCE_TRANSACTION'] ?? null;
        $sentrySpan = $GLOBALS['SENTRY_PERFORMANCE_SPAN'] ?? null;
        if ($sentryTransaction instanceof \Sentry\Tracing\Transaction && $sentrySpan instanceof \Sentry\Tracing\Span) {
            $sentryTransaction->finish();
            $sentrySpan->finish();
        } else {
            trigger_error('SENTRY global variables have been modified');
        }
    });
}