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feat(core): Align Span interface with OTEL #12898

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Jul 18, 2024
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33 changes: 33 additions & 0 deletions packages/core/src/tracing/sentryNonRecordingSpan.ts
Original file line number Diff line number Diff line change
Expand Up @@ -68,4 +68,37 @@ export class SentryNonRecordingSpan implements Span {
): this {
return this;
}

/**
* This should generally not be used,
* but we need it for being comliant with the OTEL Span interface.
*
* @hidden
* @internal
*/
public addLink(_link: unknown): this {
return this;
}

/**
* This should generally not be used,
* but we need it for being comliant with the OTEL Span interface.
*
* @hidden
* @internal
*/
public addLinks(_links: unknown[]): this {
return this;
}

/**
* This should generally not be used,
* but we need it for being comliant with the OTEL Span interface.
*
* @hidden
* @internal
*/
public recordException(_exception: unknown, _time?: number | undefined): void {
// noop
}
}
40 changes: 38 additions & 2 deletions packages/core/src/tracing/sentrySpan.ts
Original file line number Diff line number Diff line change
Expand Up @@ -107,6 +107,39 @@ export class SentrySpan implements Span {
}
}

/**
* This should generally not be used,
* but we need it for being comliant with the OTEL Span interface.
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*
* @hidden
* @internal
*/
public addLink(_link: unknown): this {
return this;
}

/**
* This should generally not be used,
* but we need it for being comliant with the OTEL Span interface.
*
* @hidden
* @internal
*/
public addLinks(_links: unknown[]): this {
return this;
}

/**
* This should generally not be used,
* but we need it for being comliant with the OTEL Span interface.
*
* @hidden
* @internal
*/
public recordException(_exception: unknown, _time?: number | undefined): void {
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comment/unactionable: "recordException" is a very unfortunate function name for users seeing this method when interacting with the Sentry SDK 😬

(ignore this comment, I'm just fairly sure someone is gonna call it "accidentally" instead of captureException)

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Had the same thought! I had an idea that we could alias this to captureException. Maybe we should also make it very clear in the JS doc that captureException needs to be preferred.

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I had an idea that we could alias this to captureException

yeah this also crossed my mind. But I'd rather do it when it comes up to save on bundle size.

// noop
}

/** @inheritdoc */
public spanContext(): SpanContextData {
const { _spanId: spanId, _traceId: traceId, _sampled: sampled } = this;
Expand All @@ -118,18 +151,21 @@ export class SentrySpan implements Span {
}

/** @inheritdoc */
public setAttribute(key: string, value: SpanAttributeValue | undefined): void {
public setAttribute(key: string, value: SpanAttributeValue | undefined): this {
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Technically that's a breaking change 😬

Sure, 99% of our users will simply call span.setAttribute but maybe for some reason someone asserts on undefined being returned. Is there a concrete reason (e.g. someone running into this mismatch) we should consider breaking here? If not, I'd vote we don't change the return types of setAttribute(s) in v8 but happy to discuss this.

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This is not breaking unless somebody implements the SentrySpan interface, which is not really something we recommend anyone doing.

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Hmm maybe I'm missing something but this (including variations of working with the return type) seems like valid code to me:

Sentry.startSpan({}, span => {
  assert(span.setAttribute(...) === undefined) 
})

I'm not saying this is a likely code path. We can make the call to technically break here. If we do, I'd prefer to extract the breaking aspect into a separate PR to revert more easily in case someone does write in.

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Widening return types is generally not considered semver major, but sever minor I believe.

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I'd say this is fine, we generally accept widening return types as non-breaking I believe, the potential for breaking here is extremely low 🤔

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Ok, I'll keep the change then?

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Yeah, let's keep it.

if (value === undefined) {
// eslint-disable-next-line @typescript-eslint/no-dynamic-delete
delete this._attributes[key];
} else {
this._attributes[key] = value;
}

return this;
}

/** @inheritdoc */
public setAttributes(attributes: SpanAttributes): void {
public setAttributes(attributes: SpanAttributes): this {
Object.keys(attributes).forEach(key => this.setAttribute(key, attributes[key]));
return this;
}

/**
Expand Down
4 changes: 1 addition & 3 deletions packages/opentelemetry/src/trace.ts
Original file line number Diff line number Diff line change
Expand Up @@ -289,9 +289,7 @@ export function continueTrace<T>(options: Parameters<typeof baseContinueTrace>[0
function getActiveSpanWrapper<T>(parentSpan?: Span | SentrySpan): (callback: () => T) => T {
return parentSpan
? (callback: () => T) => {
// We cast this, because the OTEL Span has a few more methods than our Span interface
// TODO: Add these missing methods to the Span interface
return withActiveSpan(parentSpan as Span, callback);
return withActiveSpan(parentSpan, callback);
}
: (callback: () => T) => callback();
}
19 changes: 17 additions & 2 deletions packages/types/src/span.ts
Original file line number Diff line number Diff line change
Expand Up @@ -219,13 +219,13 @@ export interface Span {
* Set a single attribute on the span.
* Set it to `undefined` to remove the attribute.
*/
setAttribute(key: string, value: SpanAttributeValue | undefined): void;
setAttribute(key: string, value: SpanAttributeValue | undefined): this;

/**
* Set multiple attributes on the span.
* Any attribute set to `undefined` will be removed.
*/
setAttributes(attributes: SpanAttributes): void;
setAttributes(attributes: SpanAttributes): this;

/**
* Sets the status attribute on the current span.
Expand All @@ -247,4 +247,19 @@ export interface Span {
* Adds an event to the Span.
*/
addEvent(name: string, attributesOrStartTime?: SpanAttributes | SpanTimeInput, startTime?: SpanTimeInput): this;

/**
* NOT USED IN SENTRY, only added for compliance with OTEL Span interface
*/
addLink(link: unknown): this;

/**
* NOT USED IN SENTRY, only added for compliance with OTEL Span interface
*/
addLinks(links: unknown): this;

/**
* NOT USED IN SENTRY, only added for compliance with OTEL Span interface
*/
recordException(exception: unknown, time?: number): void;
}
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