1 files changed, 191 insertions, 0 deletions
diff --git a/vendor/open-telemetry/sdk/Trace/SpanBuilder.php b/vendor/open-telemetry/sdk/Trace/SpanBuilder.php
new file mode 100644
index 000000000..2867c01c8
--- /dev/null
+++ b/vendor/open-telemetry/sdk/Trace/SpanBuilder.php
@@ -0,0 +1,191 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OpenTelemetry\SDK\Trace;
+
+use function in_array;
+use OpenTelemetry\API\Trace as API;
+use OpenTelemetry\Context\Context;
+use OpenTelemetry\Context\ContextInterface;
+use OpenTelemetry\SDK\Common\Attribute\AttributesBuilderInterface;
+use OpenTelemetry\SDK\Common\Instrumentation\InstrumentationScopeInterface;
+
+final class SpanBuilder implements API\SpanBuilderInterface
+{
+    /**
+     * @var non-empty-string
+     * @readonly
+     */
+    private string $spanName;
+
+    /** @readonly */
+    private InstrumentationScopeInterface $instrumentationScope;
+
+    /** @readonly */
+    private TracerSharedState $tracerSharedState;
+
+    /** @var ContextInterface|false|null */
+    private $parentContext = null;
+
+    /**
+     * @psalm-var API\SpanKind::KIND_*
+     */
+    private int $spanKind = API\SpanKind::KIND_INTERNAL;
+
+    /** @var list<LinkInterface> */
+    private array $links = [];
+
+    private AttributesBuilderInterface $attributesBuilder;
+    private int $totalNumberOfLinksAdded = 0;
+    private int $startEpochNanos = 0;
+
+    /** @param non-empty-string $spanName */
+    public function __construct(
+        string $spanName,
+        InstrumentationScopeInterface $instrumentationScope,
+        TracerSharedState $tracerSharedState
+    ) {
+        $this->spanName = $spanName;
+        $this->instrumentationScope = $instrumentationScope;
+        $this->tracerSharedState = $tracerSharedState;
+        $this->attributesBuilder = $tracerSharedState->getSpanLimits()->getAttributesFactory()->builder();
+    }
+
+    /** @inheritDoc */
+    public function setParent($context): API\SpanBuilderInterface
+    {
+        $this->parentContext = $context;
+
+        return $this;
+    }
+
+    /** @inheritDoc */
+    public function addLink(API\SpanContextInterface $context, iterable $attributes = []): API\SpanBuilderInterface
+    {
+        if (!$context->isValid()) {
+            return $this;
+        }
+
+        $this->totalNumberOfLinksAdded++;
+
+        if (count($this->links) === $this->tracerSharedState->getSpanLimits()->getLinkCountLimit()) {
+            return $this;
+        }
+
+        $this->links[] = new Link(
+            $context,
+            $this->tracerSharedState
+                ->getSpanLimits()
+                ->getLinkAttributesFactory()
+                ->builder($attributes)
+                ->build(),
+        );
+
+        return $this;
+    }
+
+    /** @inheritDoc */
+    public function setAttribute(string $key, $value): API\SpanBuilderInterface
+    {
+        $this->attributesBuilder[$key] = $value;
+
+        return $this;
+    }
+
+    /** @inheritDoc */
+    public function setAttributes(iterable $attributes): API\SpanBuilderInterface
+    {
+        foreach ($attributes as $key => $value) {
+            $this->attributesBuilder[$key] = $value;
+        }
+
+        return $this;
+    }
+
+    /**
+     * @inheritDoc
+     *
+     * @psalm-param API\SpanKind::KIND_* $spanKind
+     */
+    public function setSpanKind(int $spanKind): API\SpanBuilderInterface
+    {
+        $this->spanKind = $spanKind;
+
+        return $this;
+    }
+
+    /** @inheritDoc */
+    public function setStartTimestamp(int $timestampNanos): API\SpanBuilderInterface
+    {
+        if (0 > $timestampNanos) {
+            return $this;
+        }
+
+        $this->startEpochNanos = $timestampNanos;
+
+        return $this;
+    }
+
+    /** @inheritDoc */
+    public function startSpan(): API\SpanInterface
+    {
+        $parentContext = Context::resolve($this->parentContext);
+        $parentSpan = Span::fromContext($parentContext);
+        $parentSpanContext = $parentSpan->getContext();
+
+        $spanId = $this->tracerSharedState->getIdGenerator()->generateSpanId();
+
+        if (!$parentSpanContext->isValid()) {
+            $traceId = $this->tracerSharedState->getIdGenerator()->generateTraceId();
+        } else {
+            $traceId = $parentSpanContext->getTraceId();
+        }
+
+        $samplingResult = $this
+            ->tracerSharedState
+            ->getSampler()
+            ->shouldSample(
+                $parentContext,
+                $traceId,
+                $this->spanName,
+                $this->spanKind,
+                $this->attributesBuilder->build(),
+                $this->links,
+            );
+        $samplingDecision = $samplingResult->getDecision();
+        $samplingResultTraceState = $samplingResult->getTraceState();
+
+        $spanContext = API\SpanContext::create(
+            $traceId,
+            $spanId,
+            SamplingResult::RECORD_AND_SAMPLE === $samplingDecision ? API\TraceFlags::SAMPLED : API\TraceFlags::DEFAULT,
+            $samplingResultTraceState,
+        );
+
+        if (!in_array($samplingDecision, [SamplingResult::RECORD_AND_SAMPLE, SamplingResult::RECORD_ONLY], true)) {
+            return Span::wrap($spanContext);
+        }
+
+        $attributesBuilder = clone $this->attributesBuilder;
+        foreach ($samplingResult->getAttributes() as $key => $value) {
+            $attributesBuilder[$key] = $value;
+        }
+
+        return Span::startSpan(
+            $this->spanName,
+            $spanContext,
+            $this->instrumentationScope,
+            $this->spanKind,
+            $parentSpan,
+            $parentContext,
+            $this->tracerSharedState->getSpanLimits(),
+            $this->tracerSharedState->getSpanProcessor(),
+            $this->tracerSharedState->getResource(),
+            $attributesBuilder,
+            $this->links,
+            $this->totalNumberOfLinksAdded,
+            $this->startEpochNanos
+        );
+    }
+}