46 lines
1.3 KiB
PHP
46 lines
1.3 KiB
PHP
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<?php
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declare(strict_types=1);
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namespace OpenTelemetry\Contrib\Otlp;
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use OpenTelemetry\API\Signals;
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use OpenTelemetry\SDK\Resource\Detectors\Sdk;
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use OpenTelemetry\SemConv\ResourceAttributes;
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use UnexpectedValueException;
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class OtlpUtil
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{
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/**
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* gRPC per-signal methods
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* @see protobuf *ServiceClient
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*/
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private const METHODS = [
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Signals::TRACE => '/opentelemetry.proto.collector.trace.v1.TraceService/Export',
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Signals::METRICS => '/opentelemetry.proto.collector.metrics.v1.MetricsService/Export',
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Signals::LOGS => '/opentelemetry.proto.collector.logs.v1.LogsService/Export',
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];
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public static function method(string $signal): string
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{
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if (!array_key_exists($signal, self::METHODS)) {
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throw new UnexpectedValueException('gRPC method not defined for signal: ' . $signal);
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}
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return self::METHODS[$signal];
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}
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/**
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* @link https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/protocol/exporter.md#user-agent
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*/
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public static function getUserAgentHeader(): array
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{
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$resource = (new Sdk())->getResource();
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return ['User-Agent' => sprintf(
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'OTel OTLP Exporter PHP/%s',
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$resource->getAttributes()->get(ResourceAttributes::TELEMETRY_SDK_VERSION) ?: 'unknown'
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)];
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}
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}
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