debug-files upload --type elf: accept a directory of .so files (walk recursively, key by GNU build-id) #69

Summary

debug-files upload --type elf only accepts AGP's pre-built native-debug-symbols.zip; a directory is rejected (README: "a directory is rejected; the Gradle plugin zips the intermediates folder first"). Please let it take a directory (or several paths) and walk it recursively for ELF libraries, the way --type proguard, dsym and pdb already scan directories.

Why

bugsee-android-gradle-plugin#10 wants to upload native symbols from the unstripped libraries in build/intermediates/merged_native_libs/<variant>/**/lib/<abi>/*.so (as Sentry and Firebase Crashlytics do), independent of ndk.debugSymbolLevel. That removes the dependence on AGP's native-debug-symbols.zip, which for FULL also inflates the AAB (55 MB → 181 MB for a React Native 0.87 app).

Today the plugin would have to zip those libraries itself on every build; with React Native that means re-compressing ~100+ MB (libreactnative.so ships unstripped from Maven) just to hand it to the CLI, which then unpacks it again. Passing the directory avoids the pack/unpack round trip.

Proposed

• Accept a directory (and/or multiple path arguments) for --type elf; walk recursively.
• Reuse the existing per-entry logic: built-in names .so, .so.dbg, .so.sym (+ --extension), GNU build-id required (warn and skip otherwise), one upload per build-id preferring DWARF, then symbol table, then the larger file.
• Keep zip input working unchanged.
• Dedup against the server by build-id as today, with --force still replacing a poorer symbol for the same build-id (see bugsee-android-gradle-plugin#9).

Nice to have

Skip re-reading/hashing libraries the server already holds before sending bytes (e.g. a build-id existence check ahead of the PUT), so unchanged prebuilt libraries (libreactnative.so, libc++_shared.so, libfbjni.so) cost one cheap request per build rather than a full transfer.

Plugin side

Once released, the plugin raises its CLI floor to that version and prefers the directory path, keeping native-debug-symbols.zip as a fallback.

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