Cleanup __init__ (#647)

## Summary

Clean up some `__init__` package code and move uvloop config to
`__init__`.

## Details

This clean up was originally a part of #641 but as that PR is blocked I
decided to split it out. Removing the transformers logging config does
not seem to have any real affect; I do not get logs either way.
Importing any huggingface libraries incurs a significant time cost so
this is a prereq to improving CLI responsiveness. Additionally uvloop
should be configured as early as possible so moved the setup to
`__init__`.

---

- [x] "I certify that all code in this PR is my own, except as noted
below."

## Use of AI

- [ ] Includes AI-assisted code completion
- [ ] Includes code generated by an AI application
- [ ] Includes AI-generated tests (NOTE: AI written tests should have a
docstring that includes `## WRITTEN BY AI ##`)

Author: sjmonson

src/guidellm/__init__.py

@@ -3,45 +3,31 @@
 evaluating and benchmarking large language models (LLMs).
 """
 
-import contextlib
-import logging
-import os
+import asyncio
+import warnings
 
-from datasets import config
+# Configure uvloop if available
+try:
+    import uvloop
 
-with (
-    open(os.devnull, "w") as devnull,  # noqa: PTH123
-    contextlib.redirect_stderr(devnull),
-    contextlib.redirect_stdout(devnull),
-):
-    from transformers.utils import logging as hf_logging  # type: ignore[import]
-
-    # Set the log level for the transformers library to ERROR
-    # to ignore None of PyTorch, TensorFlow found
-    os.environ["TOKENIZERS_PARALLELISM"] = "false"  # Silence warnings for tokenizers
-    hf_logging.set_verbosity_error()
-    logging.getLogger("transformers").setLevel(logging.ERROR)
-    config.USE_AUDIO_DECODE = False
+    asyncio.set_event_loop_policy(uvloop.EventLoopPolicy())
+except ImportError:
+    warnings.warn(
+        "uvloop is not installed. For improved performance, "
+        "consider installing the guidellm[perf] extras group.",
+        category=UserWarning,
+        stacklevel=2,
+    )
 
 from .logger import configure_logger, logger
 from .settings import (
-    DatasetSettings,
-    Environment,
-    LoggingSettings,
-    Settings,
-    print_config,
     reload_settings,
     settings,
 )
 
 __all__ = [
-    "DatasetSettings",
-    "Environment",
-    "LoggingSettings",
-    "Settings",
     "configure_logger",
     "logger",
-    "print_config",
     "reload_settings",
     "settings",
 ]

src/guidellm/__main__.py

@@ -30,12 +30,7 @@
 import click
 from pydantic import ValidationError
 
-from guidellm.data import ShortPromptStrategy, process_dataset
-
-try:
-    import uvloop
-except ImportError:
-    uvloop = None  # type: ignore[assignment] # Optional dependency
+from guidellm.data import ShortPromptStrategy, process_dataset  # isort: skip
 
 import guidellm.utils.cli as cli_tools
 from guidellm.backends import Backend, BackendType
@@ -497,8 +492,6 @@ def run(**kwargs):  # noqa: C901
             errs[0]["msg"], ctx=click.get_current_context(), param_hint=param_name
         ) from err
 
-    if uvloop is not None:
-        asyncio.set_event_loop_policy(uvloop.EventLoopPolicy())
     asyncio.run(
         benchmark_generative_text(
             args=args,

src/guidellm/settings.py

@@ -2,15 +2,13 @@
 
 import json
 from collections.abc import Sequence
-from enum import Enum
 from typing import Literal
 
-from pydantic import BaseModel, Field, model_validator
+from pydantic import BaseModel, Field
 from pydantic_settings import BaseSettings, SettingsConfigDict
 
 __all__ = [
     "DatasetSettings",
-    "Environment",
     "LoggingSettings",
     "Settings",
     "print_config",
@@ -19,25 +17,6 @@
 ]
 
 
-class Environment(str, Enum):
-    """
-    Enum for the supported environments
-    """
-
-    LOCAL = "local"
-    DEV = "dev"
-    STAGING = "staging"
-    PROD = "prod"
-
-
-ENV_REPORT_MAPPING = {
-    Environment.PROD: "https://raw.githubusercontent.com/vllm-project/guidellm/refs/heads/gh-pages/ui/v0.5.4/index.html",
-    Environment.STAGING: "https://raw.githubusercontent.com/vllm-project/guidellm/refs/heads/gh-pages/ui/release/v0.4.0/index.html",
-    Environment.DEV: "https://raw.githubusercontent.com/vllm-project/guidellm/refs/heads/gh-pages/ui/dev/index.html",
-    Environment.LOCAL: "http://localhost:3000/index.html",
-}
-
-
 class LoggingSettings(BaseModel):
     """
     Logging settings for the application
@@ -79,7 +58,7 @@ class ReportGenerationSettings(BaseModel):
     Report generation settings for the application
     """
 
-    source: str = ""
+    source: str = "https://raw.githubusercontent.com/vllm-project/guidellm/refs/heads/gh-pages/ui/v0.5.4/index.html"
 
 
 class Settings(BaseSettings):
@@ -103,7 +82,6 @@ class Settings(BaseSettings):
     )
 
     # general settings
-    env: Environment = Environment.PROD
     default_async_loop_sleep: float = 10e-5
     logging: LoggingSettings = LoggingSettings()
     default_sweep_number: int = 10
@@ -138,13 +116,6 @@ class Settings(BaseSettings):
     table_headers_border_char: str = "-"
     table_column_separator_char: str = "|"
 
-    @model_validator(mode="after")
-    @classmethod
-    def set_default_source(cls, values):
-        if not values.report_generation.source:
-            values.report_generation.source = ENV_REPORT_MAPPING.get(values.env)
-        return values
-
     def generate_env_file(self) -> str:
         """
         Generate the .env file from the current settings

tests/unit/test_settings.py

@@ -2,7 +2,6 @@
 
 from guidellm.settings import (
     DatasetSettings,
-    Environment,
     LoggingSettings,
     ReportGenerationSettings,
     Settings,
@@ -19,7 +18,6 @@
 @pytest.mark.smoke
 def test_default_settings():
     settings = Settings()
-    assert settings.env == Environment.PROD
     assert settings.logging == LoggingSettings()
     assert settings.report_generation.source.startswith(BASE_URL)
 
@@ -29,36 +27,16 @@ def test_settings_from_env_variables(mocker):
     mocker.patch.dict(
         "os.environ",
         {
-            "GUIDELLM__env": "dev",
             "GUIDELLM__logging__disabled": "true",
             "GUIDELLM__REPORT_GENERATION__SOURCE": "http://custom.url",
         },
     )
 
     settings = Settings()
-    assert settings.env == Environment.DEV
     assert settings.logging.disabled is True
     assert settings.report_generation.source == "http://custom.url"
 
 
-@pytest.mark.smoke
-def test_report_generation_default_source():
-    settings = Settings(env=Environment.LOCAL)
-    assert settings.report_generation.source == "http://localhost:3000/index.html"
-
-    settings = Settings(env=Environment.DEV)
-    assert (
-        settings.report_generation.source
-        == "https://raw.githubusercontent.com/vllm-project/guidellm/refs/heads/gh-pages/ui/dev/index.html"
-    )
-
-    settings = Settings(env=Environment.STAGING)
-    assert settings.report_generation.source.startswith(BASE_URL)
-
-    settings = Settings(env=Environment.PROD)
-    assert settings.report_generation.source.startswith(BASE_URL)
-
-
 @pytest.mark.sanity
 def test_logging_settings():
     logging_settings = LoggingSettings(
@@ -90,12 +68,10 @@ def test_reload_settings(mocker):
     mocker.patch.dict(
         "os.environ",
         {
-            "GUIDELLM__env": "staging",
             "GUIDELLM__logging__disabled": "false",
         },
     )
     reload_settings()
-    assert settings.env == Environment.STAGING
     assert settings.logging.disabled is False