function ParentBased::__construct

ParentBased sampler delegates the sampling decision based on the parent context.

Parameters

SamplerInterface $root Sampler called for the span with no parent (root span).:

SamplerInterface|null $remoteParentSampler Sampler called for the span with the remote sampled parent. When null, `AlwaysOnSampler` is used.:

SamplerInterface|null $remoteParentNotSampler Sampler called for the span with the remote not sampled parent. When null, `AlwaysOffSampler` is used.:

SamplerInterface|null $localParentSampler Sampler called for the span with local the sampled parent. When null, `AlwaysOnSampler` is used.:

SamplerInterface|null $localParentNotSampler Sampler called for the span with the local not sampled parent. When null, `AlwaysOffSampler` is used.:

File

vendor/open-telemetry/sdk/Trace/Sampler/ParentBased.php, line 46

Class

ParentBased

This implementation of the SamplerInterface that respects parent context's sampling decision and delegates for the root span. Example: ``` use OpenTelemetry\API\Trace\ParentBased; use OpenTelemetry\API\Trace\AlwaysOnSampler

Namespace

OpenTelemetry\SDK\Trace\Sampler

Code

public function __construct(SamplerInterface $root, ?SamplerInterface $remoteParentSampler = null, ?SamplerInterface $remoteParentNotSampler = null, ?SamplerInterface $localParentSampler = null, ?SamplerInterface $localParentNotSampler = null) {
    $this->remoteParentSampler = $remoteParentSampler ?? new AlwaysOnSampler();
    $this->remoteParentNotSampler = $remoteParentNotSampler ?? new AlwaysOffSampler();
    $this->localParentSampler = $localParentSampler ?? new AlwaysOnSampler();
    $this->localParentNotSampler = $localParentNotSampler ?? new AlwaysOffSampler();
}