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* fix(vertex_ai/files): upload batch files in a single media request to fix 499s on large uploads
PR #31036 switched the vertex batch file upload from a single GCS media
upload to a chunked resumable session. The resumable path sends the body as
many sequential PUTs, each waiting a full round-trip to GCS before the next,
so a multi-GB upload accumulates hundreds of round-trips and overruns the
client/load-balancer request timeout, surfacing as 499s (client closed
connection) on files as small as 500MB. This was a regression from the
last-known-good commit, where the upload completed as one continuous request.
Revert the batch upload to a single uploadType=media request, but stage the
transformed payload to a temp file first so peak memory stays bounded (the
goal of the resumable rewrite) without the per-chunk round-trips. The temp
file is closed deterministically (TemporaryFile unlinks on close), not left
to the GC. The now-unused resumable chunked-upload plumbing is removed.
Also swap the per-row transform's stdlib json for orjson (parse + serialize),
which is ~4x faster on this hot path; the streaming body now emits compact
orjson bytes.
The request stays synchronous, so the returned file object is real and
POST /v1/batches keeps working immediately against the uploaded object.
Tests: single media request carries the whole payload with a real
Content-Length (no chunked transfer-encoding); failed upload raises; the
staged temp file is closed deterministically; byte-for-byte transform parity.
* test(vertex_ai/files): mock single media upload POST instead of removed resumable method
test_avertex_batch_prediction patched BaseLLMHTTPHandler._aresumable_chunked_upload, which was removed when the batch jsonl upload moved from a chunked resumable GCS session to a single uploadType=media request. Patch the raw httpx.AsyncClient.post that _astage_and_upload_media issues so the real staging, upload and response transform run while the GCS object response is mocked, and assert the media URL and Content-Type.
* fix(vertex_ai/files): forward request timeout to media upload, drop orjson, sort imports
Forward the per-request timeout through _stage_and_upload_media /
_astage_and_upload_media to the GCS POST. Every other upload branch forwards
it; the new media path was dropping it, so a caller-provided timeout was
silently ignored (the files path passes 600s by default, but a custom
request_timeout would not have reached this upload). Regression test asserts
the resolved timeout reaches the request (mutation-verified).
Revert the orjson swap in the batch transform: importing orjson at module load
in this core-path file broke `import litellm` on environments without orjson
(the Windows import test). Back to stdlib json; the upload leg dominates large
uploads anyway, so the transform-side win was marginal.
Fix import ordering in llm_http_handler.py (I001) introduced by the new imports.
* fix(vertex_ai/files): stream batch upload to GCS instead of staging to a temp file
Addresses a disk-exhaustion concern: staging the full transformed batch body to
a local temp file before the GCS request meant an authenticated user could fill
the proxy's temp volume with large concurrent uploads (on top of Starlette's
input spool).
GCS's simple/media upload accepts chunked transfer-encoding, so stream the
transform straight to the single media request instead. Each block is produced
on a worker thread (the transform never runs on the event loop) and sent
chunked, so the body is neither buffered in memory nor written to disk, and the
upload is still one continuous request (no per-chunk round-trips, no 499). Drops
the temp-file staging, the tempfile/IO imports, and Content-Length computation.
Regression test asserts the upload streams (chunked transfer-encoding, no
Content-Length) and creates no temp file; mutation-verified that reintroducing
staging fails it.
(cherry picked from commit
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| test_cache_control_and_reasoning.py | ||
| test_file_content_block.py | ||
| test_file_search_responses.py | ||
| test_lifecycle_fix.py | ||
| test_oom_fixes.py | ||
| test_polling_url_origin_match.py | ||
| test_predibase_transformation.py | ||