16ec1a3703
In T340552, the official PHP OpenTelemetry client was effectively rejected for inclusion in MediaWiki due to its size. Implement a minimal tracing library instead that eschews conformance with the OTEL client specification in favor of simplicity, while remaining capable of emitting trace data in OTLP format and thus retaining compatibility with any ingestion endpoint capable of handling OTLP. In its current state, the library supports a basic feature set that should be sufficient for basic tracing integration: * Span creation, inclusive span activation and automatic parent span assignment, * Span attributes and span kinds, * Basic resource (process/request)-level metadata generation, * Data export over OTLP. Additional functionality, such as trace propagation, can then be incrementally added to the library. Bug: T340552 Change-Id: Ibc3910058cd7ed064cad293a3cdc091344e66b86
17 lines
530 B
PHP
17 lines
530 B
PHP
<?php
|
|
namespace Wikimedia\Telemetry;
|
|
|
|
/**
|
|
* Interface for OTEL span samplers.
|
|
* @since 1.43
|
|
*/
|
|
interface SamplerInterface {
|
|
/**
|
|
* Determine whether a newly created span should be sampled based on its parent span data.
|
|
*
|
|
* @param SpanContext|null $parentSpanContext Context of he parent span of the newly created span,
|
|
* or `null` if the newly created span is a root span.
|
|
* @return bool Whether the newly created span should be sampled.
|
|
*/
|
|
public function shouldSample( ?SpanContext $parentSpanContext ): bool;
|
|
}
|