[None][feat] Support response_format='path' on /v1/images/edits and report Server-Timing total - #18444
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LGTM from runtime side. Change is trivial.
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Included review availability: Your plan provides up to 12 included reviews per hour; 11 remain after this review. WalkthroughImage editing now accepts ChangesVisual generation
Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: 🔵 Low · up to The PR adds local-path responses for image edits and allows them by default unless the deployment explicitly disables them, which may expose server filesystem details to untrusted callers. It is mergeable with explicit owner awareness that deployments requiring path confidentiality must enforce the disabling configuration. Suggested reviewers: 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
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🧹 Nitpick comments (1)
tests/unittest/_torch/visual_gen/test_trtllm_serve_endpoints.py (1)
631-631: 📐 Maintainability & Code Quality | 🔵 Trivial | ⚡ Quick winAdd
-> Noneto the new test methods.The four added methods are procedures without return annotations. Add
-> Noneto each method definition.As per coding guidelines: “Annotate every function, use
Nonefor procedures.”Also applies to: 1075-1075, 1093-1093, 1113-1113
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In `@tensorrt_llm/serve/openai_server.py`:
- Line 3059: Update openai_image_generation to initialize total-request timing
from raw_request.state.server_arrival_time instead of setting request_received
at handler entry, and calculate the end timestamp with the same steady clock
source. Add a test that delays or distinguishes request parsing from handler
execution and verifies total timing begins at server arrival.
---
Nitpick comments:
In `@tests/unittest/_torch/visual_gen/test_trtllm_serve_endpoints.py`:
- Line 631: Add a -> None return annotation to each of the four newly added test
methods, including test_image_generation_server_timing_has_total and the methods
at the other referenced locations, while leaving their behavior unchanged.
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The image edit route already writes each output image to media storage before returning a fetchable URL, but it could not return that path: `ImageEditRequest.response_format` only accepted `url` / `b64_json`, while `/v1/images/generations` and both video routes have supported `path` since NVIDIA#17490. Reuse the existing `_image_object` helper so the edit route shares one transport dispatch with the generation route, and gate `path` behind the same `TRTLLM_DISALLOW_LOCAL_MEDIA_PATH` check the other routes use. Signed-off-by: Yiyun Lu <55233584+luyiyun1021@users.noreply.github.com>
`/v1/images/generations` and `/v1/images/edits` emitted only the engine's `generation` and `denoise` metrics, so a client could not tell how much server time was spent outside the engine — request parsing, image encoding, response serialization. Both video routes have reported `total` since NVIDIA#17490. Start the clock at the top of each handler, before request parsing, so the metric spans the same window the video routes measure. The existing `latency` variable is not reused because it starts after parsing and would under-report. Signed-off-by: Yiyun Lu <55233584+luyiyun1021@users.noreply.github.com>
`openai_image_generation` is handed an already-parsed `ImageGenerationRequest`, so the `time.perf_counter()` stamp at the top of its body ran *after* FastAPI had read and validated the body. Its `total` therefore excluded request parsing, unlike the three routes that take `raw_request` and parse inside. The claim in the previous commit that all image routes span the window the video routes measure held only for `/v1/images/edits`. All four VisualGen media routes now read `raw_request.state.server_arrival_time`, stamped by `ServerArrivalTimeMiddleware` at ASGI entry, and close `total` out with `get_steady_clock_now_in_seconds()` so both ends sit on one clock. This is the same source the disagg server already uses for its `queue` / `ttft` ranges. Handler signatures are untouched, so the generation route keeps the pydantic parameter the LLM routes all use, and its OpenAPI schema with it. Behavior change worth calling out: the video routes' `total` now starts at ASGI entry rather than at handler entry, so it additionally covers routing and middleware dispatch. `Server-Timing` is a user-visible response header. No in-tree consumer reads `total` — the benchmark client parses only `generation` and `denoise`, and perf-sanity reads neither — so no CI baseline moves. `total` still ends where the header is built, before `model_dump()` and JSON rendering; that tail is negligible for `response_format=path` but not for `b64_json`. Closing it needs the header injected from an outbound middleware, the way `PerfMetricsMiddleware` does it, and is left to a follow-up. The new tests backdate only the middleware's clock, leaving the handler's end reading on the real one, so `total` must absorb the full offset — a handler-local stamp collapses it back to ~0 and fails. Signed-off-by: Yiyun Lu <55233584+luyiyun1021@users.noreply.github.com>
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5 participants
Description
Two small gaps where the image routes lag behind the video routes. Both are on the response side of
/v1/images/*and both matter to the same caller — a benchmark client that wants server-side timings without paying to transfer the pixels.1.
response_format='path'on/v1/images/editsThe edit route already writes each output image to media storage before returning a fetchable URL, but it could not return that path:
ImageEditRequest.response_formatonly acceptedurl/b64_json, while/v1/images/generationsand both video routes have supportedpathsince #17490. The route now reuses the existing_image_objecthelper, so the two image routes share one transport dispatch and cannot drift when a transport changes, andpathis gated behind the sameTRTLLM_DISALLOW_LOCAL_MEDIA_PATHcheck the other routes use.2.
totalin the imageServer-Timingheader/v1/images/generationsand/v1/images/editsemitted only the engine'sgenerationanddenoise, so a client could not tell how much server time was spent outside the engine — request parsing, image encoding, response serialization. Both video routes have reportedtotalsince #17490. The clock now starts at the top of each handler, before request parsing, so the metric spans the same window the video routes measure. The existinglatencyvariable is deliberately not reused: it starts after parsing and would under-report.Test Coverage
tests/unittest/_torch/visual_gen/test_trtllm_serve_endpoints.py, 4 new cases:test_image_edit_response_format_path_returns_on_disk_pathurl/b64_jsontest_image_edit_response_format_path_rejected_when_disabledTRTLLM_DISALLOW_LOCAL_MEDIA_PATHrejects it on the edit route tootest_image_generation_server_timing_has_totalgeneration+denoise+totaltest_image_edit_server_timing_has_totalFull file: 142 passed.
Both changes were mutation-verified — reverting the source change makes exactly the corresponding new tests fail, and the video-route timing tests keep passing (confirming
totalwas already correct there and the new assertions are not tautological).PR Checklist
[JIRA/NVBUG/None][type] descriptionGitHub Bot Help
/bot [-h] ['run', 'kill', 'skip', 'reuse-pipeline'] ...Dev Engineer Review
ImageEditRequest.response_formatnow accepts"path"./v1/images/editssupports path responses through_image_object.TRTLLM_DISALLOW_LOCAL_MEDIA_PATHapplies to image edits.Server-Timing.QA Engineer Review
tests/integration/test_lists/.