hermes-agent/plugins/model-providers/qwen-oauth/__init__.py
pedrommaiaa 724ab9098d perf: avoid broad message prep deepcopies
(cherry picked from commit 030746c560)
2026-07-09 14:35:14 +05:30

108 lines
3.8 KiB
Python

"""Qwen Portal provider profile."""
from typing import Any
from providers import register_provider
from providers.base import ProviderProfile
class QwenProfile(ProviderProfile):
"""Qwen Portal — message normalization, vl_high_resolution, metadata top-level."""
@staticmethod
def _copy_part_if_request_mutable(part: dict[str, Any]) -> tuple[dict[str, Any], bool]:
image_url = part.get("image_url")
if isinstance(image_url, dict):
copied = dict(part)
copied["image_url"] = dict(image_url)
return copied, True
return part, False
def prepare_messages(self, messages: list[dict[str, Any]]) -> list[dict[str, Any]]:
"""Normalize content to list-of-dicts format.
Inject cache_control on system message.
Matches the behavior of run_agent.py:_qwen_prepare_chat_messages().
"""
if not messages:
return []
prepared = list(messages)
system_idx: int | None = None
for idx, msg in enumerate(messages):
if not isinstance(msg, dict):
continue
if system_idx is None and msg.get("role") == "system":
system_idx = idx
content = msg.get("content")
if isinstance(content, str):
msg_copy = dict(msg)
msg_copy["content"] = [{"type": "text", "text": content}]
prepared[idx] = msg_copy
elif isinstance(content, list):
normalized_parts = []
changed = False
for part in content:
if isinstance(part, str):
normalized_parts.append({"type": "text", "text": part})
changed = True
elif isinstance(part, dict):
normalized_part, copied = self._copy_part_if_request_mutable(part)
normalized_parts.append(normalized_part)
changed = changed or copied
else:
changed = True
if normalized_parts and changed:
msg_copy = dict(msg)
msg_copy["content"] = normalized_parts
prepared[idx] = msg_copy
# Inject cache_control on the last part of the system message.
if system_idx is not None:
msg = prepared[system_idx]
if isinstance(msg, dict):
content = msg.get("content")
if (
isinstance(content, list)
and content
and isinstance(content[-1], dict)
):
msg_copy = dict(msg)
content_copy = list(content)
content_copy[-1] = dict(content_copy[-1])
content_copy[-1]["cache_control"] = {"type": "ephemeral"}
msg_copy["content"] = content_copy
prepared[system_idx] = msg_copy
return prepared
def build_extra_body(
self, *, session_id: str | None = None, **context
) -> dict[str, Any]:
return {"vl_high_resolution_images": True}
def build_api_kwargs_extras(
self,
*,
reasoning_config: dict | None = None,
qwen_session_metadata: dict | None = None,
**context,
) -> tuple[dict[str, Any], dict[str, Any]]:
"""Qwen metadata goes to top-level api_kwargs, not extra_body."""
top_level = {}
if qwen_session_metadata:
top_level["metadata"] = qwen_session_metadata
return {}, top_level
qwen = QwenProfile(
name="qwen-oauth",
aliases=("qwen", "qwen-portal", "qwen-cli"),
env_vars=("QWEN_API_KEY",),
base_url="https://portal.qwen.ai/v1",
auth_type="oauth_external",
default_max_tokens=65536,
)
register_provider(qwen)