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Respect GUIDELLM__PREFERRED_ROUTE during backend validation #223

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Merged
merged 1 commit into from
Jul 10, 2025
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Respect GUIDELLM__PREFERRED_ROUTE during backend validation #223

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19 changes: 15 additions & 4 deletions src/guidellm/backend/backend.py
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,7 @@
from PIL import Image

from guidellm.backend.response import ResponseSummary, StreamingTextResponse
from guidellm.config import settings

__all__ = [
"Backend",
Expand Down Expand Up @@ -129,10 +130,20 @@ async def validate(self):
if not models:
raise ValueError("No models available for the backend")

async for _ in self.text_completions(
prompt="Test connection", output_token_count=1
): # type: ignore[attr-defined]
pass
# Use the preferred route defined in the global settings when performing the
# validation request. This avoids calling an unavailable endpoint (ie
# /v1/completions) when the deployment only supports the chat completions
# endpoint.
if settings.preferred_route == "chat_completions":
async for _ in self.chat_completions( # type: ignore[attr-defined]
content="Test connection", output_token_count=1
):
pass
else:
async for _ in self.text_completions( # type: ignore[attr-defined]
prompt="Test connection", output_token_count=1
):
pass

await self.reset()

Expand Down