Error handling for CacheWriteInterceptor added in 1.14.0 causing issues

[aduflo-envoy]

Summary

Apollo 1.14.0 introduced handling of a new edge case for CacheWriteInterceptor, noted as CacheWriteError.missingCacheRecords.

In handling this new edge case, a new control flow was introduced:

guard
      let createdResponse = response,
      let cacheRecords = createdResponse.cacheRecords
    else {
      chain.handleErrorAsync(
        CacheWriteError.missingCacheRecords,
        request: request,
        response: response,
        completion: completion
      )
      return
    }

Given that this control flow calls handleErrorAsync() instead of proceedAsync(), it prematurely exits the request chain.

In 1.13.0, given this edge case was unhandled, the request chain would continue through interceptors registered after CacheWriteInterceptor, so this was a nonissue.

This new control flow changes expectations for Apollo Interceptors, and for my specific use case, I'd need to omit CacheWriteInterceptor from the list of interceptors to reestablish the previous control flow. At this time I'll need to have Apollo marked as 1.13.0 exact version in SPM, until this is adjusted.

Version

1.14.0

Steps to reproduce the behavior

Trigger the edge case outlined above, so anytime there aren't cache records available.

Logs

No response

Anything else?

No response

[calvincestari]

Hi @aduflo-envoy, thanks for reporting the issue. Good news is that this has already been resolved and merged into main. It'll go out in the next release which we're planning to publish this week still.

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