From 8f3646a9c93a06f76f6abb31020fdb74b4b1fc59 Mon Sep 17 00:00:00 2001
From: Andrew Dolgov <fox@fakecake.org>
Date: Sun, 9 Apr 2023 20:50:33 +0300
Subject: exp: jaeger tracing

---
 classes/tracer.php | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 classes/tracer.php

(limited to 'classes/tracer.php')

diff --git a/classes/tracer.php b/classes/tracer.php
new file mode 100644
index 000000000..fde99927d
--- /dev/null
+++ b/classes/tracer.php
@@ -0,0 +1,49 @@
+<?php
+use OpenTracing\GlobalTracer;
+use OpenTracing\Scope;
+
+class Tracer {
+	private static $instance;
+
+	public function __construct() {
+		$config = new \Jaeger\Config(
+			[
+				'sampler' => [
+					'type' => \Jaeger\SAMPLER_TYPE_CONST,
+					'param' => true,
+				],
+				'logging' => true,
+				"local_agent" => [
+					"reporting_host" => "172.17.172.39",
+					"reporting_port" => 6832
+				],
+				'dispatch_mode' => \Jaeger\Config::JAEGER_OVER_BINARY_UDP,
+			],
+			'tt-rss'
+		);
+
+		$config->initializeTracer();
+
+		register_shutdown_function(function() {
+			$tracer = GlobalTracer::get();
+			$tracer->flush();
+		});
+	}
+
+	private function _start(string $name, array $options = []) {
+		$tracer = GlobalTracer::get();
+		return $tracer->startActiveSpan($name, $options);
+	}
+
+	public static function start(string $name, array $options = []) : Scope {
+		return self::get_instance()->_start($name, $options);
+	}
+
+	public static function get_instance() : Tracer {
+		if (self::$instance == null)
+			self::$instance = new self();
+
+		return self::$instance;
+	}
+
+}
-- 
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