vllm/tests/v1/metrics/test_ray_metrics.py
Harry Mellor 2f99f2f506
Tidy vllm/config/__init__.py to only add classes and functions (#26405)
Signed-off-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>
2025-10-08 07:10:00 -07:00

97 lines
3.0 KiB
Python

# SPDX-License-Identifier: Apache-2.0
# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
import pytest
import ray
from vllm.config.model import ModelDType
from vllm.sampling_params import SamplingParams
from vllm.v1.engine.async_llm import AsyncEngineArgs, AsyncLLM
from vllm.v1.metrics.ray_wrappers import RayPrometheusMetric, RayPrometheusStatLogger
MODELS = [
"distilbert/distilgpt2",
]
@pytest.mark.parametrize("model", MODELS)
@pytest.mark.parametrize("dtype", ["half"])
@pytest.mark.parametrize("max_tokens", [16])
def test_engine_log_metrics_ray(
example_prompts,
model: str,
dtype: ModelDType,
max_tokens: int,
) -> None:
"""Simple smoke test, verifying this can be used without exceptions.
Need to start a Ray cluster in order to verify outputs."""
@ray.remote(num_gpus=1)
class EngineTestActor:
async def run(self):
engine_args = AsyncEngineArgs(
model=model, dtype=dtype, disable_log_stats=False, enforce_eager=True
)
engine = AsyncLLM.from_engine_args(
engine_args, stat_loggers=[RayPrometheusStatLogger]
)
for i, prompt in enumerate(example_prompts):
results = engine.generate(
request_id=f"request-id-{i}",
prompt=prompt,
sampling_params=SamplingParams(max_tokens=max_tokens),
)
async for _ in results:
pass
# Create the actor and call the async method
actor = EngineTestActor.remote() # type: ignore[attr-defined]
ray.get(actor.run.remote())
def test_sanitized_opentelemetry_name():
"""Test the metric name sanitization logic for Ray."""
# Only a-z, A-Z, 0-9, _, test valid characters are preserved
valid_name = "valid_metric_123_abcDEF"
assert (
RayPrometheusMetric._get_sanitized_opentelemetry_name(valid_name) == valid_name
)
# Test dash, dot, are replaced
name_with_dash_dot = "metric-name.test"
expected = "metric_name_test"
assert (
RayPrometheusMetric._get_sanitized_opentelemetry_name(name_with_dash_dot)
== expected
)
# Test colon is replaced with underscore
name_with_colon = "metric:name"
expected = "metric_name"
assert (
RayPrometheusMetric._get_sanitized_opentelemetry_name(name_with_colon)
== expected
)
# Test multiple invalid characters are replaced
name_with_invalid = "metric:name@with#special%chars"
expected = "metric_name_with_special_chars"
assert (
RayPrometheusMetric._get_sanitized_opentelemetry_name(name_with_invalid)
== expected
)
# Test mixed valid and invalid characters
complex_name = "vllm:engine_stats/time.latency_ms-99p"
expected = "vllm_engine_stats_time_latency_ms_99p"
assert (
RayPrometheusMetric._get_sanitized_opentelemetry_name(complex_name) == expected
)
# Test empty string
assert RayPrometheusMetric._get_sanitized_opentelemetry_name("") == ""