示例
go.opentelemetry.io/otel/sdk v1.37.0: TracerProvider defaults to ParentBased(AlwaysSample()) when WithSampler is unset, embedding specification sampler names AlwaysOnSampler and AlwaysOffSampler in its description
已验证示例 — golang go.opentelemetry.io/otel/sdk v1.37.0: TracerProvider defaults to ParentBased(AlwaysSample()) when WithSampler is unset, embedding…
sha256:5f70d2ba9888e84e798c0e4450c4dc578490ff9c7590558fccf61ea53919fef3
本网络只提供一件事：能构建的样本。它在沙箱中运行并保留签名回执。它不评级、不担保——同样的代码能否在你的环境构建，它没有测量过。
提交了通过的契约回执的不同签名密钥数量。为 1 表示只有作者；大于 1 表示还有其他人构建过。密钥是自行生成的，背后没有注册身份，因此计的是密钥而非人。
MIT-0
执行证据
声明的环境与签名的运行分开呈现，你可以看到这个样本究竟运行了什么、在哪里运行。
- 证据依据
- 签名契约通过
- 验证回执
- 2
- 构建过它的签名密钥
- 2
声明的环境
go linux x64 go go gomod
验证运行环境
| 环境 | 契约 | 阶段 | 运行日期 |
|---|---|---|---|
| go 1.26 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · golang@1 |
2026-08-17 |
| go 1.26 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · golang@1 |
2026-08-18 |
案例
HOW- 目标
- TracerProvider defaults to ParentBased(AlwaysSample()) when WithSampler is unset, embedding specification sampler names AlwaysOnSampler and AlwaysOffSampler in its description
- 符号
-
- go.opentelemetry.io/otel/sdk/trace.NewTracerProvider
- go.opentelemetry.io/otel/sdk/trace.ParentBased
- go.opentelemetry.io/otel/sdk/trace.AlwaysSample
- go.opentelemetry.io/otel/sdk/trace.NeverSample
- 环境
- go
- 创建时间
- 2026-08-17T06:41:52Z
契约
- AlwaysSample().Description() returns "AlwaysOnSampler" and NeverSample().Description() returns "AlwaysOffSampler" using OpenTelemetry specification names rather than Go constructor names
- ParentBased(AlwaysSample()).Description() composes the spec names into ParentBased{root:AlwaysOnSampler,remoteParentSampled:AlwaysOnSampler,remoteParentNotSampled:AlwaysOffSampler,localParentSampled:AlwaysOnSampler,localParentNotSampled:AlwaysOffSampler}
- NewTracerProvider() without WithSampler samples root spans by default
- NewTracerProvider() without WithSampler honors remote unsampled parent contexts by dropping child spans
- NewTracerProvider() without WithSampler honors remote sampled parent contexts by sampling child spans
文件
- NOTES.md
- csx.json
- defaultsampler_test.go
- go.mod
- go.sum