Add a console message for set environment variables

Signed-off-by: Samuel Monson <[email protected]>

Author: sjmonson

src/guidellm/__main__.py

@@ -416,6 +416,16 @@ def run(**kwargs):
     disable_console_interactive = (
         kwargs.pop("disable_console_interactive", False) or disable_console
     )
+    console = Console() if not disable_console else None
+    envs = cli_tools.list_set_env()
+    if console and envs:
+        console.print_update(
+            title=(
+                "Note: the following environment variables **may** affect configuration"
+            ),
+            details=", ".join(envs),
+            status="warning",
+        )
 
     try:
         args = BenchmarkGenerativeTextArgs.create(
@@ -439,7 +449,7 @@ def run(**kwargs):
                 if not disable_console_interactive
                 else None
             ),
-            console=Console() if not disable_console else None,
+            console=console,
         )
     )
 

src/guidellm/utils/cli.py

@@ -1,19 +1,31 @@
 import contextlib
 import json
+import os
 from typing import Any
 
 import click
 
 __all__ = [
     "Union",
     "format_list_arg",
+    "list_set_env",
     "parse_json",
     "parse_list",
     "parse_list_floats",
     "set_if_not_default",
 ]
 
 
+def list_set_env(prefix: str = "GUIDELLM_") -> list[str]:
+    """
+    List all set environment variables prefixed with the given prefix.
+
+    :param prefix: The prefix to filter environment variables.
+    :return: List of environment variable names that are set with the given prefix.
+    """
+    return [key for key in os.environ if key.startswith(prefix)]
+
+
 def parse_list(ctx, param, value) -> list[str] | None:
     """
     Click callback to parse the input value into a list of strings.