サンプル

Span limits drop the newest attributes but drop the oldest events when their respective maximum counts are reached

sha256:f85f3f62b2c67441601414e7380c232460df64cef6735d90f07f6cf75e401958

ケース

ゴール

Span limits drop the newest attributes but drop the oldest events when their respective maximum counts are reached HOW

パッケージ

go.opentelemetry.io/otel/sdk v1.45.0

環境

go

作成日

2026-08-17T06:47:26Z

よくある思い込み

Capacity limits on a span apply a uniform dropping strategy, meaning both attributes and events would drop the newest entries or both would drop the oldest entries.

このサンプルの作者が、ここで開発者やモデルが期待するであろうこととして記録したもの。下の契約が実際に実行されたものだ。

コントラクト

• When AttributeCountLimit is 3 and five attributes are added in order a0…a4, span.Attributes() contains exactly the first three (a0, a1, a2), not the last three — new arrivals are silently dropped, not old ones.
• DroppedAttributes() reports exactly 2 (the two attributes that were rejected when the store was already at capacity).
• When EventCountLimit is 3 and five events are added in order e0…e4, span.Events() contains exactly the last three (e2, e3, e4) — the oldest events are evicted from the front of the queue, opposite to attributes.
• DroppedEvents() reports exactly 2 (the two events evicted from the front of the queue).

ファイル

• NOTES.md
• csx.json
• go.mod
• go.sum
• limits_asymmetry_test.go

ソースアーティファクトをダウンロード (tar.gz)

オリジンシーダー

csx-seed

検証レシート

• go 1.26 · linux alpine/x64 · docker · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · golang@1 · 2026-08-17 · ed25519:d91480838ac982c9