blob: e8f6a0378c11686efc2cd939990e701443066b23 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
|
<?php
use OpenTelemetry\Contrib\Otlp\OtlpHttpTransportFactory;
use OpenTelemetry\Contrib\Otlp\SpanExporter;
use OpenTelemetry\SDK\Trace\SpanProcessor\SimpleSpanProcessor;
use OpenTelemetry\SDK\Trace\TracerProvider;
use OpenTelemetry\API\Trace\Propagation\TraceContextPropagator;
use OpenTelemetry\API\Trace\SpanKind;
use OpenTelemetry\SDK\Trace\SpanExporter\InMemoryExporter;
use OpenTelemetry\SDK\Resource\ResourceInfoFactory;
use OpenTelemetry\SDK\Resource\ResourceInfo;
use OpenTelemetry\SDK\Common\Attribute\Attributes;
use OpenTelemetry\SemConv\ResourceAttributes;
use OpenTelemetry\SDK\Trace\Sampler\AlwaysOnSampler;
use OpenTelemetry\SDK\Trace\Sampler\ParentBased;
class Tracer {
/** @var Tracer $instance */
private static $instance;
private $tracerProvider;
/** @var OpenTelemetry\API\Trace\TracerInterface $tracer */
private $tracer;
public function __construct() {
$OPENTELEMETRY_ENDPOINT = Config::get(Config::OPENTELEMETRY_ENDPOINT);
if ($OPENTELEMETRY_ENDPOINT) {
$transport = (new OtlpHttpTransportFactory())->create($OPENTELEMETRY_ENDPOINT, 'application/x-protobuf');
$exporter = new SpanExporter($transport);
} else {
$exporter = new InMemoryExporter();
}
$resource = ResourceInfoFactory::emptyResource()->merge(
ResourceInfo::create(Attributes::create(
[ResourceAttributes::SERVICE_NAME => Config::get(Config::OPENTELEMETRY_SERVICE)]
), ResourceAttributes::SCHEMA_URL),
);
$this->tracerProvider = TracerProvider::builder()
->addSpanProcessor(new SimpleSpanProcessor($exporter))
->setResource($resource)
->setSampler(new ParentBased(new AlwaysOnSampler()))
->build();
$this->tracer = $this->tracerProvider->getTracer('io.opentelemetry.contrib.php');
$context = TraceContextPropagator::getInstance()->extract(getallheaders());
$span = $this->tracer->spanBuilder('root')
->setParent($context)
->setSpanKind(SpanKind::KIND_SERVER)
->setAttribute('php.request', json_encode($_REQUEST))
->setAttribute('php.server', json_encode($_SERVER))
->startSpan();
$scope = $span->activate();
register_shutdown_function(function() use ($span, $scope) {
$span->end();
$scope->detach();
$this->tracerProvider->shutdown();
});
}
/**
* @param string $name
* @return OpenTelemetry\API\Trace\SpanInterface
*/
private function _start(string $name) {
$span = $this->tracer
->spanBuilder($name)
->setSpanKind(SpanKind::KIND_SERVER)
->startSpan();
$span->activate();
return $span;
}
/**
* @param string $name
* @return OpenTelemetry\API\Trace\SpanInterface
*/
public static function start(string $name) {
return self::get_instance()->_start($name);
}
public static function get_instance() : Tracer {
if (self::$instance == null)
self::$instance = new self();
return self::$instance;
}
}
|
