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filters: deprecate OpenTracing in FilterContext #3044

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AlexanderYastrebov
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Deprecate OpenTracing FilterContext getters and remove their usage from filters.

For #2104

Deprecate OpenTracing FilterContext getters and remove their usage from filters.

For #2104

Signed-off-by: Alexander Yastrebov <alexander.yastrebov@zalando.de>
@AlexanderYastrebov AlexanderYastrebov added the minor no risk changes, for example new filters label Apr 26, 2024
@@ -599,7 +599,7 @@ func (opa *OpenPolicyAgentInstance) startSpanFromContextWithTracer(tr opentracin
}

func (opa *OpenPolicyAgentInstance) StartSpanFromFilterContext(fc filters.FilterContext) (opentracing.Span, context.Context) {
return opa.startSpanFromContextWithTracer(fc.Tracer(), fc.ParentSpan(), fc.Request().Context())
return opa.StartSpanFromContext(fc.Request().Context())
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@mjungsbluth BTW I am not sure why OPA needs a whole set of opentracing helpers.

I think it should get tracer from its options and for synchronous filter requests it should get proxy span (and its tracer if needed) via opentracing.SpanFromContext(ctx.Request().Context())

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@AlexanderYastrebov It should be fine the way you outlined. It was probably overly defensive to include the tracer for cases where the context does not already contain a span (which actually don't provide much value for the synchronous cases).

@szuecs
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szuecs commented Apr 26, 2024

👍

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@AlexanderYastrebov
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👍

@AlexanderYastrebov AlexanderYastrebov merged commit 6ee45b1 into master Apr 26, 2024
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@AlexanderYastrebov AlexanderYastrebov deleted the filters/deprecate-filter-context-opentracing branch April 26, 2024 13:54
Comment on lines +119 to +120
// Filter spans should be children of the proxy span,
// use opentracing.SpanFromContext(ctx.Request().Context()) to get the proxy span.
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This is not a proxy span but a "filters" span added by #890 if enabled

skipper/proxy/tracing.go

Lines 111 to 119 in f6bf033

func (t *proxyTracing) startFilterTracing(operation string, ctx *context) *filterTracing {
if t.disableFilterSpans {
return nil
}
span := tracing.CreateSpan(operation, ctx.request.Context(), t.tracer)
ctx.parentSpan = span
return &filterTracing{span, t.logFilterLifecycleEvents}
}

Maybe we can change it to return ingress span.
Anyway it is not used by anything, e.g. tracingTag uses ingress span (which is opentracing.SpanFromContext(ctx.Request().Context()))

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See #3052

AlexanderYastrebov added a commit that referenced this pull request Apr 29, 2024
The ParentSpan is not a proxy span but either ingress span of "filters"
span when enabled.

Follow up on #3044

Signed-off-by: Alexander Yastrebov <alexander.yastrebov@zalando.de>
AlexanderYastrebov added a commit that referenced this pull request Apr 29, 2024
…#3052)

The ParentSpan is not a proxy span but either ingress span of "filters"
span when enabled.

Follow up on #3044

Signed-off-by: Alexander Yastrebov <alexander.yastrebov@zalando.de>
JanardhanSharma pushed a commit to JanardhanSharma/skipper that referenced this pull request Jul 19, 2024
Deprecate OpenTracing FilterContext getters and remove their usage from filters.

For zalando#2104

Signed-off-by: Alexander Yastrebov <alexander.yastrebov@zalando.de>
JanardhanSharma pushed a commit to JanardhanSharma/skipper that referenced this pull request Jul 19, 2024
…zalando#3052)

The ParentSpan is not a proxy span but either ingress span of "filters"
span when enabled.

Follow up on zalando#3044

Signed-off-by: Alexander Yastrebov <alexander.yastrebov@zalando.de>
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3 participants