left-pad 64-bit B3 trace IDs #698
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Aneurysm9
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jmacd,
krnowak,
lizthegrey,
MrAlias,
paivagustavo and
tedsuo
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lizthegrey
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May 5, 2020
MrAlias
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May 5, 2020
|
sorry about the spam, editing from github web ui is annoying, but handy in a pinch |
seh
reviewed
May 5, 2020
| @@ -88,8 +88,15 @@ func (b3 B3) Extract(ctx context.Context, supplier propagation.HTTPSupplier) con | |||
| return ContextWithRemoteSpanContext(ctx, sc) | |||
| } | |||
|
|
|||
| func fixB3TID(in string) string { | |||
| if len(in) == 16 { | |||
| in = strings.Repeat("0", 16) + in | |||
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Using a const here instead of strings.Repeat would be good for a future pass. There's a lot going on in Repeat.
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Good call, I initially had strings.Repeat("0", 32-len(in)) but that failed the tests for invalid input IDs between 16 and 32 hex digits. I think it's more correct to only accept 16 or 32 hex digit values.
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copybaranaut
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May 25, 2022
Summary: OTel wants all trace ids to be 128bit. However b3 trace ids can be 64 bit. See https://github.com/openzipkin/b3-propagation#traceid-1 So we should also support propagating 64 bit trace IDs. To ensure compatibility with other OTel tooling, we left pad the trace IDs with zeroes and make it a 128 bit ID before passing it to the OTel endpoint. This mirrors the approach taken by open-telemetry/opentelemetry-go#698 Test Plan: Updated a test to use 64 bit trace ids and ensured that they get left padded with zeroes as expexted. Reviewers: nserrino, michelle, philkuz Reviewed By: philkuz JIRA Issues: PP-3407 Signed-off-by: Vihang Mehta <vihang@pixielabs.ai> Differential Revision: https://phab.corp.pixielabs.ai/D11450 GitOrigin-RevId: 9f09a7e
orishuss
pushed a commit
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Jul 14, 2022
Summary: OTel wants all trace ids to be 128bit. However b3 trace ids can be 64 bit. See https://github.com/openzipkin/b3-propagation#traceid-1 So we should also support propagating 64 bit trace IDs. To ensure compatibility with other OTel tooling, we left pad the trace IDs with zeroes and make it a 128 bit ID before passing it to the OTel endpoint. This mirrors the approach taken by open-telemetry/opentelemetry-go#698 Test Plan: Updated a test to use 64 bit trace ids and ensured that they get left padded with zeroes as expexted. Reviewers: nserrino, michelle, philkuz Reviewed By: philkuz JIRA Issues: PP-3407 Signed-off-by: Vihang Mehta <vihang@pixielabs.ai> Differential Revision: https://phab.corp.pixielabs.ai/D11450 GitOrigin-RevId: 9f09a7e
orishuss
pushed a commit
to orishuss/pixie
that referenced
this pull request
Jul 14, 2022
Summary: OTel wants all trace ids to be 128bit. However b3 trace ids can be 64 bit. See https://github.com/openzipkin/b3-propagation#traceid-1 So we should also support propagating 64 bit trace IDs. To ensure compatibility with other OTel tooling, we left pad the trace IDs with zeroes and make it a 128 bit ID before passing it to the OTel endpoint. This mirrors the approach taken by open-telemetry/opentelemetry-go#698 Test Plan: Updated a test to use 64 bit trace ids and ensured that they get left padded with zeroes as expexted. Reviewers: nserrino, michelle, philkuz Reviewed By: philkuz JIRA Issues: PP-3407 Signed-off-by: Vihang Mehta <vihang@pixielabs.ai> Differential Revision: https://phab.corp.pixielabs.ai/D11450 GitOrigin-RevId: 9f09a7e
orishuss
pushed a commit
to orishuss/pixie
that referenced
this pull request
Jul 14, 2022
Summary: OTel wants all trace ids to be 128bit. However b3 trace ids can be 64 bit. See https://github.com/openzipkin/b3-propagation#traceid-1 So we should also support propagating 64 bit trace IDs. To ensure compatibility with other OTel tooling, we left pad the trace IDs with zeroes and make it a 128 bit ID before passing it to the OTel endpoint. This mirrors the approach taken by open-telemetry/opentelemetry-go#698 Test Plan: Updated a test to use 64 bit trace ids and ensured that they get left padded with zeroes as expexted. Reviewers: nserrino, michelle, philkuz Reviewed By: philkuz JIRA Issues: PP-3407 Signed-off-by: Vihang Mehta <vihang@pixielabs.ai> Differential Revision: https://phab.corp.pixielabs.ai/D11450 GitOrigin-RevId: 9f09a7e
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Fixes #686.