Add traceparent to TRequestSettings #326 #400
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Gazizonoki
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Apr 15, 2025
Gazizonoki
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Apr 21, 2025
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| // Add TraceParent to headers (if it is set) | ||
| if (!settings.TraceParent_.empty()) { | ||
| rpcSettings.Header.emplace_back("traceparent", settings.TraceParent_); |
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На будущее, лучше traceparent сразу до инициализации Aux прокидывать (в grpc_connections.h).
Смысл такой - нам хочется в grpc_connections.h тоже собирать спаны, удобно, если там будет TraceParent отдельным параметром.
Пока можно так замержить, но в будущем стоит поправить.
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PR merged in ydb repo: ydb-platform/ydb#17561 and synced to ydb-cpp-sdk repo: aec1485 |
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Добавлена поддержка передачи traceparent (стандарт W3C TraceContext) через gRPC-заголовки. Это позволяет:
Как это работает
TraceParentвTRequestSettings.TRequestSettingsпреобразуется вTRpcRequestSettingsAux.TGRpcRequestProcessorCommonавтоматически добавляет его вgRPC-заголовки какtraceparent. Поддерживаются все типы запросов (синхронные, асинхронные, streaming).TraceParentпуст — заголовок не передается.В дальнейшем при интеграция с OpenTelemetry:
TraceParentможно будет автоматически брать извне (например, из OpenTelemetry Context).Формат
Заголовок соответствует W3C TraceContext:
trace_id: 32 hex chars (16 bytes)parent_span_id: 16 hex chars (8 bytes)flags:01(sampled)