Attachments set in Java do not end up in NDK crashes

[tustanivsky]

Description

Custom user attachments that were set in Java via Sentry.configureScope do not end up in NDK crashes.

The issue originated from the Unreal Engine SDK which uses sentry-java internally to support error monitoring on Android:

• Attachments in sentry subsystem ConfigureScope fail to upload sentry-unreal#191

Currently, the only way to workaround this is to configure a custom beforeSend handler and add the missing attachments to captured crash event manually on the next app launch by using a Hint object. However, this requires us to instruct sentry-unreal users to instrument their code accordingly whereas the expected behavior is for this functionality to work out of the box.

A potential solution is to persist the attachment metadata to disk (see PersistingScopeObserver.java) and then enrich the NDK event on the next launch, similar to how this is handled for data like tags, contexts, etc.

[linear]

JAVA-185 Attachments set in Java do not end up in NDK crashes

[markushi]

Let's store attachments to disk and enrich native envelopes on the next app start with them. Once all envelopes are processed, we can safely delete the attachment files.

[tustanivsky]

@markushi Is there any ETA on when this might be picked up?