vllm-omni/tests/dfx/reliability/test_reliability_wan22.py

"""
Wan2.2 reliability integration tests.
"""

from __future__ import annotations

import concurrent.futures
import os
import time
from pathlib import Path
from typing import Any

import pytest
import requests

from tests.dfx.conftest import (
    assert_fault_exception,
    create_reliability_omni_server_params,
    resolve_oom_device_spec,
    supports_video_generation,
)
from tests.dfx.reliability.helpers import (
    get_health_raw,
    inject_gpu_oom,
    make_process_kill_fault_injector,
    stop_gpu_oom_hogs,
)
from tests.helpers.mark import hardware_test
from tests.helpers.media import generate_synthetic_image

RELIABILITY_SCENARIOS: list[dict[str, Any]] = [
    {
        "test_name": "wan22_t2v_reliability_default",
        "server_params": {
            "model": "Wan-AI/Wan2.2-T2V-A14B-Diffusers",
            "server_args": [
                "--num-gpus",
                "1",
                "--boundary-ratio",
                "0.875",
                "--flow-shift",
                "5.0",
                "--disable-log-stats",
            ],
        },
    }
]

E2E_STAGE_CONFIGS_DIR = Path(__file__).resolve().parent.parent / "e2e" / "stage_configs"
OOM_INJECTION_CONFIG = {
    "target_mem_ratio": 0.95,
    "hold_seconds": 0,
    "startup_timeout_sec": 20,
    "strict": True,
}
FAULT_ERROR_KEYWORDS = (
    "oom",
    "out of memory",
    "cuda",
    "job failed",
    "unknown error",
    "internal server error",
    "500 server error",
)
PROCESS_KILL_ERROR_KEYWORDS = (
    "timeout",
    "did not complete within",
    "connection",
    "engine",
    "orchestrator",
    "dead",
    "internal",
    "500",
    "503",
)

WAN_PARAMS = create_reliability_omni_server_params(RELIABILITY_SCENARIOS, E2E_STAGE_CONFIGS_DIR)
DIFFUSION_VIDEO_PARAMS = [param for param in WAN_PARAMS if supports_video_generation(param.model)]


@pytest.mark.slow
@hardware_test(res={"cuda": "H100"}, num_cards=1)
@pytest.mark.parametrize("omni_server_function", DIFFUSION_VIDEO_PARAMS, indirect=True)
def test_reliability_fault_gpu_oom_video_large_request_failure(omni_server_function, openai_client_function) -> None:
    stage_config_path = getattr(omni_server_function, "stage_config_path", None)
    device_spec = resolve_oom_device_spec(OOM_INJECTION_CONFIG, stage_config_path)
    handle = inject_gpu_oom(
        device=device_spec,
        target_mem_ratio=OOM_INJECTION_CONFIG["target_mem_ratio"],
        hold_seconds=OOM_INJECTION_CONFIG["hold_seconds"],
        startup_timeout_sec=OOM_INJECTION_CONFIG["startup_timeout_sec"],
        strict=OOM_INJECTION_CONFIG["strict"],
    )
    try:
        image_data_url = f"data:image/jpeg;base64,{generate_synthetic_image(1280, 720)['base64']}"
        request_config = {
            "form_data": {
                "prompt": "Generate a realistic road-driving video with camera motion.",
                "width": 512,
                "height": 512,
                "fps": 8,
                "num_frames": 8,
                "guidance_scale": 1.0,
                "flow_shift": 5.0,
                "num_inference_steps": 4,
                "seed": 42,
            },
            "image_reference": image_data_url,
            "stream": False,
        }
        try:
            openai_client_function.send_video_diffusion_request(request_config, request_num=1)
        except Exception as exc:
            assert_fault_exception(exc, FAULT_ERROR_KEYWORDS)
        else:
            pytest.fail("expected large /v1/videos request failure during GPU OOM injection")
    finally:
        stop_gpu_oom_hogs(handle)


@pytest.mark.slow
@pytest.mark.skipif(os.name == "nt", reason="process-kill injection helper is POSIX-only")
@pytest.mark.parametrize(
    "fault_injector",
    [
        pytest.param(
            make_process_kill_fault_injector(
                grep_patterns="multiprocessing.spawn",
                signal_name="SIGKILL",
                limit=1,
                post_kill_wait_seconds=2.0,
            ),
            id="runtime_process_chain",
        ),
    ],
    indirect=True,
)
@pytest.mark.parametrize("omni_server_function", DIFFUSION_VIDEO_PARAMS, indirect=True)
def test_reliability_fault_process_kill_video_request_failure(
    omni_server_after_fault_function,
    openai_client_function,
) -> None:
    image_data_url = f"data:image/jpeg;base64,{generate_synthetic_image(1280, 720)['base64']}"
    request_config = {
        "form_data": {
            "prompt": "Generate a realistic road-driving video with camera motion.",
            "width": 512,
            "height": 512,
            "fps": 8,
            "num_frames": 8,
            "guidance_scale": 1.0,
            "flow_shift": 5.0,
            "num_inference_steps": 4,
            "seed": 42,
        },
        "image_reference": image_data_url,
        "stream": False,
    }
    try:
        openai_client_function.send_video_diffusion_request(request_config, request_num=1)
    except Exception as exc:
        assert_fault_exception(exc, PROCESS_KILL_ERROR_KEYWORDS)
    else:
        pytest.fail("expected /v1/videos request failure after process-kill injection")


@pytest.mark.slow
@pytest.mark.skipif(os.name == "nt", reason="process-kill injection helper is POSIX-only")
@pytest.mark.parametrize(
    "fault_injector",
    [
        pytest.param(
            make_process_kill_fault_injector(
                grep_patterns="multiprocessing.spawn",
                signal_name="SIGKILL",
                limit=1,
                post_kill_wait_seconds=2.0,
            ),
            id="runtime_process_chain",
        ),
    ],
    indirect=True,
)
@pytest.mark.parametrize("omni_server_function", DIFFUSION_VIDEO_PARAMS, indirect=True)
def test_reliability_fault_process_kill_video_health_fast_fail_and_concurrent(
    omni_server_after_fault_function,
    openai_client_function,
) -> None:
    """Black-box: after process kill, /v1/videos fails fast and concurrent calls don't hang.

    /health→503 is checked last: optional ``pytest.skip`` then ``assert`` (drop the ``if`` to harden).
    """
    host = omni_server_after_fault_function.host
    port = omni_server_after_fault_function.port
    url = f"http://{host}:{port}/v1/videos"
    image_data_url = f"data:image/jpeg;base64,{generate_synthetic_image(1280, 720)['base64']}"
    request_config = {
        "form_data": {
            "prompt": "Generate a realistic road-driving video with camera motion.",
            "width": 512,
            "height": 512,
            "fps": 8,
            "num_frames": 8,
            "guidance_scale": 1.0,
            "flow_shift": 5.0,
            "num_inference_steps": 4,
            "seed": 42,
        },
        "image_reference": image_data_url,
        "stream": False,
    }

    # Phase-1: one new /v1/videos request should fail fast.
    payload = {
        "prompt": "fast-fail check",
        "width": "512",
        "height": "512",
        "fps": "8",
        "num_frames": "8",
        "num_inference_steps": "4",
    }
    start = time.monotonic()
    try:
        response = requests.post(
            url,
            data=payload,
            headers={"Accept": "application/json"},
            timeout=20,
        )
        elapsed = time.monotonic() - start
        assert elapsed < 15, f"[process_kill fast_fail] /v1/videos did not fail fast after fault: {elapsed:.2f}s"
        assert response.status_code >= 500, (
            "[process_kill fast_fail] expected server-side error after fatal fault, "
            f"got status={response.status_code}, body={response.text[:200]!r}"
        )
    except Exception:
        elapsed = time.monotonic() - start
        assert elapsed < 15, f"[process_kill fast_fail] /v1/videos exception was too slow after fault: {elapsed:.2f}s"

    # Phase-2: concurrent requests should converge and at least one should fail.
    start = time.monotonic()
    with concurrent.futures.ThreadPoolExecutor(max_workers=3) as executor:
        futures = [
            executor.submit(openai_client_function.send_video_diffusion_request, request_config, 1) for _ in range(3)
        ]
        done, pending = concurrent.futures.wait(
            futures,
            timeout=40,
            return_when=concurrent.futures.ALL_COMPLETED,
        )

    elapsed = time.monotonic() - start
    assert not pending, f"[process_kill concurrent] some fault-time video requests hung: pending={len(pending)}"
    assert elapsed < 40, f"[process_kill concurrent] fault-time video request convergence is too slow: {elapsed:.2f}s"

    fault_observed = False
    conc_debug: list[Any] = []
    for future in done:
        try:
            future.result()
            conc_debug.append("ok")
        except Exception as exc:
            fault_observed = True
            conc_debug.append(repr(exc))
            assert_fault_exception(exc, PROCESS_KILL_ERROR_KEYWORDS)
    assert fault_observed, (
        "[process_kill concurrent] expected at least one /v1/videos request to fail after fault; "
        f"conc_debug={conc_debug}"
    )

    # Phase-3: /health→503 after fault. Optional skip today; remove the ``if`` later to harden.
    deadline = time.monotonic() + 20.0
    last_observation = ""
    final_health_status: int | None = None
    while time.monotonic() < deadline:
        try:
            status, body = get_health_raw(host, port, timeout_sec=5)
            last_observation = f"http={status}, body={body[:200]!r}"
            final_health_status = status
            if status == 503:
                break
        except Exception as exc:  # noqa: BLE001
            last_observation = f"exception={exc!r}"
        time.sleep(0.5)
    if final_health_status != 503:
        pytest.skip("issue#3050")
    assert final_health_status == 503, (
        "[process_kill health] expected /health 503 after fatal fault, "
        f"got status={final_health_status}, last_observation={last_observation}"
    )


@pytest.mark.slow
@hardware_test(res={"cuda": "H100"}, num_cards=1)
@pytest.mark.skip(reason="issue#2327")
@pytest.mark.parametrize("omni_server_function", DIFFUSION_VIDEO_PARAMS, indirect=True)
def test_reliability_video_oom_recovers_after_fault_removed(
    omni_server_function,
) -> None:
    """Black-box: after removing OOM pressure, service converges to a terminal state and requests do not hang."""
    stage_config_path = getattr(omni_server_function, "stage_config_path", None)
    device_spec = resolve_oom_device_spec(OOM_INJECTION_CONFIG, stage_config_path)
    handle = inject_gpu_oom(
        device=device_spec,
        target_mem_ratio=OOM_INJECTION_CONFIG["target_mem_ratio"],
        hold_seconds=OOM_INJECTION_CONFIG["hold_seconds"],
        startup_timeout_sec=OOM_INJECTION_CONFIG["startup_timeout_sec"],
        strict=OOM_INJECTION_CONFIG["strict"],
    )
    host = omni_server_function.host
    port = omni_server_function.port
    create_url = f"http://{host}:{port}/v1/videos"

    failure_observed = False
    try:
        for _ in range(3):
            try:
                response = requests.post(
                    create_url,
                    data={
                        "prompt": "oom recover probe",
                        "width": "512",
                        "height": "512",
                        "fps": "8",
                        "num_frames": "8",
                        "num_inference_steps": "4",
                    },
                    headers={"Accept": "application/json"},
                    timeout=25,
                )
                if response.status_code >= 500:
                    failure_observed = True
                    break
            except Exception:
                failure_observed = True
                break
            time.sleep(1.0)
    finally:
        stop_gpu_oom_hogs(handle)

    assert failure_observed, "expected at least one video request failure while OOM pressure is active"

    recovery_deadline = time.monotonic() + 90.0
    terminal_health: int | None = None
    unreachable_streak = 0
    last_health_exc: BaseException | None = None
    while time.monotonic() < recovery_deadline:
        try:
            status, _ = get_health_raw(host, port, timeout_sec=5)
            unreachable_streak = 0
            if status in (200, 503):
                terminal_health = status
                break
        except Exception as exc:  # noqa: BLE001
            last_health_exc = exc
            msg = str(exc).lower()
            if "connection refused" in msg or "actively refused" in msg:
                unreachable_streak += 1
                if unreachable_streak >= 5:
                    pytest.fail(
                        "after OOM sidecar stopped, /health is unreachable repeatedly; "
                        "the APIServer process likely exited unexpectedly "
                        f"(last_exc={last_health_exc!r})"
                    )
            else:
                unreachable_streak = 0
        time.sleep(1.0)
    else:
        pytest.fail(
            "wan22 server did not converge to terminal health (200/503) after OOM pressure was removed; "
            f"last_health_exc={last_health_exc!r}"
        )

    assert terminal_health is not None
    start = time.monotonic()
    recovery_resp: requests.Response | None = None
    try:
        recovery_resp = requests.post(
            create_url,
            data={
                "prompt": "post-recovery admission check",
                "width": "512",
                "height": "512",
                "fps": "8",
                "num_frames": "8",
                "num_inference_steps": "4",
            },
            headers={"Accept": "application/json"},
            timeout=30,
        )
        recovery_status = recovery_resp.status_code
        recovery_text_prefix = recovery_resp.text[:300]
    except Exception as exc:  # noqa: BLE001
        recovery_status = None
        recovery_text_prefix = repr(exc)
    elapsed = time.monotonic() - start
    assert elapsed < 30, f"post-fault /v1/videos should not hang after OOM removal: {elapsed:.2f}s"

    if terminal_health == 200:
        assert recovery_status == 200, (
            "health recovered but /v1/videos admission did not succeed; "
            f"status={recovery_status}, body={recovery_text_prefix!r}"
        )
        assert recovery_resp is not None
        recovery_payload = recovery_resp.json()
        assert "id" in recovery_payload, f"post-recovery create payload missing id: {recovery_payload!r}"
    else:
        assert recovery_status is None or recovery_status >= 500, (
            "unhealthy terminal state should fail fast on /v1/videos, "
            f"got health={terminal_health}, request_status={recovery_status}, body={recovery_text_prefix!r}"
        )