Teknium
444 lines
19 KiB
Python
444 lines
19 KiB
Python
"""Model assignment dashboard routes: model info/options/recommended default, auxiliary + MoA slots, /api/model/set.
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Extracted from ``hermes_cli.web_server``; helpers/state that tests monkeypatch on
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``web_server`` stay there and are imported lazily at call time (cycle-safe).
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"""
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import logging
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import asyncio
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from fastapi import APIRouter
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from hermes_cli.web_routers._common import http_failure
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from hermes_cli.web_deps import late
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from fastapi import HTTPException
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from hermes_cli.web_models import ModelAssignment, MoaModelSlot, MoaPresetPayload, MoaConfigPayload
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from typing import Optional
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_log = logging.getLogger("hermes_cli.web_server")
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router = APIRouter()
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# web_server helpers, late-bound so monkeypatch.setattr(web_server, ...) stays authoritative.
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_apply_model_assignment_sync = late("_apply_model_assignment_sync")
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_config_profile_scope = late("_config_profile_scope")
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_dashboard_code_skew_guard = late("_dashboard_code_skew_guard")
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_profile_scope = late("_profile_scope")
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load_config = late("load_config")
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run_in_threadpool = late("run_in_threadpool")
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save_config = late("save_config")
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_EMPTY_MODEL_INFO: dict = {
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"model": "",
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"provider": "",
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"auto_context_length": 0,
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"config_context_length": 0,
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"effective_context_length": 0,
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"capabilities": {},
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}
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@router.get("/api/model/info")
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def get_model_info(profile: Optional[str] = None):
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"""Return resolved model metadata for the currently configured model.
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Calls the same context-length resolution chain the agent uses, so the
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frontend can display "Auto-detected: 200K" alongside the override field.
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Also returns model capabilities (vision, reasoning, tools) when available.
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"""
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try:
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with _profile_scope(profile):
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cfg = load_config()
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model_cfg = cfg.get("model", "")
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# Extract model name and provider from the config
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if isinstance(model_cfg, dict):
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model_name = model_cfg.get("default", model_cfg.get("name", ""))
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provider = model_cfg.get("provider", "")
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base_url = model_cfg.get("base_url", "")
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config_ctx = model_cfg.get("context_length")
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else:
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model_name = str(model_cfg) if model_cfg else ""
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provider = ""
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base_url = ""
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config_ctx = None
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if not model_name:
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return dict(_EMPTY_MODEL_INFO, provider=provider)
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# Resolve auto-detected context length (pass config_ctx=None to get
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# purely auto-detected value, then separately report the override)
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try:
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from agent.model_metadata import get_model_context_length
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auto_ctx = get_model_context_length(
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model=model_name,
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base_url=base_url,
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provider=provider,
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config_context_length=None, # ignore override — we want auto value
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)
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except Exception:
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auto_ctx = 0
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config_ctx_int = 0
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if isinstance(config_ctx, int) and config_ctx > 0:
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config_ctx_int = config_ctx
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# Effective is what the agent actually uses
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effective_ctx = config_ctx_int if config_ctx_int > 0 else auto_ctx
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# Try to get model capabilities from models.dev
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caps = {}
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try:
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from agent.models_dev import get_model_capabilities
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mc = get_model_capabilities(provider=provider, model=model_name)
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if mc is not None:
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caps = {
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"supports_tools": mc.supports_tools,
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"supports_vision": mc.supports_vision,
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"supports_reasoning": mc.supports_reasoning,
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"context_window": mc.context_window,
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"max_output_tokens": mc.max_output_tokens,
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"model_family": mc.model_family,
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}
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except Exception:
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pass
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return {
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"model": model_name,
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"provider": provider,
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"auto_context_length": auto_ctx,
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"config_context_length": config_ctx_int,
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"effective_context_length": effective_ctx,
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"capabilities": caps,
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}
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except HTTPException:
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# Unknown/invalid profile must surface as 404, not degrade into a
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# 200 with empty model info (which would render as "no model set").
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raise
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except Exception:
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_log.exception("GET /api/model/info failed")
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return dict(_EMPTY_MODEL_INFO)
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@router.get("/api/model/options")
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async def get_model_options(
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profile: Optional[str] = None,
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refresh: bool = False,
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include_unconfigured: bool = False,
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explicit_only: bool = False,
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):
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"""Return authenticated providers + their curated model lists.
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REST equivalent of the ``model.options`` JSON-RPC on tui_gateway, so the
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dashboard Models page can render the picker without a live chat session.
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The response shape matches ``model.options`` 1:1 so ``ModelPickerDialog``
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can share the same types.
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``profile`` scopes the picker context (current model/provider, custom
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providers from config, per-profile .env auth state) so the Models page
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reads the SAME profile /api/model/set writes.
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``refresh`` busts the per-provider model-id disk cache so every row
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re-fetches its live catalog — used by the picker's explicit "Refresh
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Models" control. Normal opens leave it false to stay on the 1h cache.
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"""
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with http_failure("GET /api/model/options failed", 500, detail="Failed to list model options"):
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skew_msg = _dashboard_code_skew_guard()
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if skew_msg:
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_log.warning("GET /api/model/options refused: %s", skew_msg)
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raise HTTPException(
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status_code=503, detail=f"Restart required: {skew_msg}"
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)
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from hermes_cli.inventory import build_model_options_payload, load_picker_context
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def _build_payload_scoped() -> dict:
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# Keep the profile override inside the worker thread so the full
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# sync picker build (config load, pricing, refresh probes) runs
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# off the event loop under the requested profile.
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# Use _config_profile_scope (contextvar only, no skill-module
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# lock) — the payload build can block for 15s on a models.dev
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# cache miss, and _profile_scope's RLock held across that block
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# starves concurrent /api/config and freezes the server (#58576).
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with _config_profile_scope(profile):
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return build_model_options_payload(
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load_picker_context(),
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explicit_only=bool(explicit_only),
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include_unconfigured=bool(include_unconfigured),
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refresh=bool(refresh),
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)
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return await run_in_threadpool(_build_payload_scoped)
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@router.get("/api/model/recommended-default")
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def get_recommended_default_model(provider: str = ""):
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"""Return the recommended default model for a freshly-authenticated provider.
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Mirrors the model-curation `hermes model` does so GUI onboarding lands on a
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sensible default instead of blindly taking the first curated entry. For
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Nous this honors the user's free/paid tier: free users get a free model,
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paid users get the full curated default. For any other provider it falls
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back to the first curated model (same as before).
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Response: {"provider": str, "model": str, "free_tier": bool | None}
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where free_tier is True/False for Nous and None otherwise. `model` may be
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empty if nothing could be resolved (caller degrades gracefully).
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"""
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slug = (provider or "").strip().lower()
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if slug == "nous":
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try:
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from hermes_cli.models import (
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get_curated_nous_model_ids,
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get_pricing_for_provider,
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check_nous_free_tier,
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nous_policy_allowed_ids,
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partition_nous_models_by_tier,
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pick_silent_default_model,
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restrict_to_nous_policy,
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union_with_portal_free_recommendations,
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union_with_portal_paid_recommendations,
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)
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from hermes_cli.auth import get_provider_auth_state
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model_ids = get_curated_nous_model_ids()
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pricing = get_pricing_for_provider("nous") or {}
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free_tier = check_nous_free_tier(force_fresh=True)
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portal_url = ""
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try:
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state = get_provider_auth_state("nous") or {}
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portal_url = state.get("portal_base_url", "") or ""
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except Exception:
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portal_url = ""
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# This endpoint picks the model a user lands on without choosing it,
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# so an unreachable one here is worse than in a picker. Narrow before
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# the tier split, so a rescued id still has to pass the free/paid
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# predicate.
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_policy_allowed = nous_policy_allowed_ids()
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if free_tier:
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model_ids, pricing = union_with_portal_free_recommendations(
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model_ids, pricing, portal_url
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)
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model_ids = restrict_to_nous_policy(
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model_ids, _policy_allowed, rescue_empty=True,
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)
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model_ids, _unavailable = partition_nous_models_by_tier(
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model_ids, pricing, free_tier=True
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)
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else:
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model_ids, pricing = union_with_portal_paid_recommendations(
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model_ids, pricing, portal_url
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)
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model_ids = restrict_to_nous_policy(
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model_ids, _policy_allowed, rescue_empty=True,
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)
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model = pick_silent_default_model(model_ids, provider="nous")
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return {"provider": "nous", "model": model, "free_tier": bool(free_tier)}
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except Exception:
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_log.exception("GET /api/model/recommended-default (nous) failed")
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return {"provider": "nous", "model": "", "free_tier": None}
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# Non-Nous: preferred silent default when the provider's curated list
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# carries it, else the first curated model. Aggregator lists lead with the
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# priciest Anthropic flagship (claude-fable-5), which must never be the
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# model a user lands on without explicitly picking it.
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try:
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from hermes_cli.inventory import build_models_payload, load_picker_context
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from hermes_cli.models import pick_silent_default_model
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payload = build_models_payload(load_picker_context())
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for row in payload.get("providers", []):
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if str(row.get("slug", "")).lower() == slug:
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models = [str(m) for m in (row.get("models") or [])]
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return {"provider": slug, "model": pick_silent_default_model(models, provider=slug), "free_tier": None}
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return {"provider": slug, "model": "", "free_tier": None}
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except Exception:
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_log.exception("GET /api/model/recommended-default failed")
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return {"provider": slug, "model": "", "free_tier": None}
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@router.get("/api/model/auxiliary")
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def get_auxiliary_models(profile: Optional[str] = None):
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"""Return current auxiliary task assignments.
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Shape:
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{
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"tasks": [
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{"task": "vision", "provider": "auto", "model": "", "base_url": ""},
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...
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],
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"main": {"provider": "openrouter", "model": "anthropic/claude-opus-4.7"},
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}
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``profile`` scopes the read — without it, the Models page would show
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the dashboard profile's auxiliary pins while /api/model/set wrote the
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selected profile's (read/write asymmetry).
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"""
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from hermes_cli.web_server import _AUX_TASK_SLOTS
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with http_failure("GET /api/model/auxiliary failed", 500, detail="Failed to read auxiliary config"):
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with _profile_scope(profile):
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cfg = load_config()
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aux_cfg = cfg.get("auxiliary", {})
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if not isinstance(aux_cfg, dict):
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aux_cfg = {}
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tasks = []
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for slot in _AUX_TASK_SLOTS:
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slot_cfg = aux_cfg.get(slot, {}) if isinstance(aux_cfg.get(slot), dict) else {}
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tasks.append({
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"task": slot,
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"provider": str(slot_cfg.get("provider", "auto") or "auto"),
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"model": str(slot_cfg.get("model", "") or ""),
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"base_url": str(slot_cfg.get("base_url", "") or ""),
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})
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model_cfg = cfg.get("model", {})
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if isinstance(model_cfg, dict):
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main = {
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"provider": str(model_cfg.get("provider", "") or ""),
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"model": str(model_cfg.get("default", model_cfg.get("name", "")) or ""),
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}
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else:
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main = {"provider": "", "model": str(model_cfg) if model_cfg else ""}
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return {"tasks": tasks, "main": main}
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@router.get("/api/model/moa")
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def get_moa_models(profile: Optional[str] = None):
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"""Return the configured Mixture-of-Agents provider/model slots."""
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with http_failure("GET /api/model/moa failed", 500, detail="Failed to read MoA config"):
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from hermes_cli.moa_config import normalize_moa_config
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with _profile_scope(profile):
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cfg = load_config()
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return normalize_moa_config(cfg.get("moa") if isinstance(cfg, dict) else {})
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@router.put("/api/model/moa")
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def set_moa_models(body: MoaConfigPayload, profile: Optional[str] = None):
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"""Persist the Mixture-of-Agents provider/model slots."""
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with http_failure("PUT /api/model/moa failed", 500, detail="Failed to save MoA config"):
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from hermes_cli.moa_config import normalize_moa_config, validate_moa_payload
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def _slot_dict(slot: MoaModelSlot) -> dict:
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# Drop unset optionals so saved slots stay minimal ({provider, model}).
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return {k: v for k, v in slot.dict().items() if v is not None}
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def _preset_dict(preset: MoaPresetPayload) -> dict:
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return {
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"reference_models": [_slot_dict(slot) for slot in preset.reference_models],
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"aggregator": _slot_dict(preset.aggregator),
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"reference_temperature": preset.reference_temperature,
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"aggregator_temperature": preset.aggregator_temperature,
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"reference_timeout": preset.reference_timeout,
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"degraded_reference_policy": preset.degraded_reference_policy,
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"max_tokens": preset.max_tokens,
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"reference_max_tokens": preset.reference_max_tokens,
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"fanout": preset.fanout,
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"enabled": preset.enabled,
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}
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with _profile_scope(body.profile or profile):
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cfg = load_config()
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if body.presets:
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raw = {
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"default_preset": body.default_preset,
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"active_preset": body.active_preset,
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"presets": {name: _preset_dict(preset) for name, preset in body.presets.items()},
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}
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else:
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raw = _preset_dict(
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MoaPresetPayload(
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reference_models=body.reference_models,
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aggregator=body.aggregator,
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reference_temperature=body.reference_temperature,
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aggregator_temperature=body.aggregator_temperature,
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reference_timeout=body.reference_timeout,
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degraded_reference_policy=body.degraded_reference_policy,
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max_tokens=body.max_tokens,
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reference_max_tokens=body.reference_max_tokens,
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fanout=body.fanout,
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enabled=body.enabled,
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)
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)
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# Reject-don't-repair: normalize_moa_config() silently swaps any
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# preset containing incomplete slots for the hardcoded defaults —
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# correct tolerance for hand-edited configs at READ time, silent
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# data loss at WRITE time (#64156: desktop autosave of a
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# half-filled slot replaced the user's whole preset). Refuse the
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# save loudly so no client can corrupt config through this route.
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problems = validate_moa_payload(raw)
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if problems:
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raise HTTPException(
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status_code=422,
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detail="Invalid MoA config: " + "; ".join(problems),
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)
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normalized = normalize_moa_config(raw)
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# Merge instead of overwrite so that hand-edited keys not declared
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# in MoaConfigPayload (e.g. save_traces, trace_dir) survive a GUI
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# save. See issue #58819.
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cfg.setdefault("moa", {}).update(normalized)
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save_config(cfg)
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return {"ok": True, **normalized}
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@router.post("/api/model/set")
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async def set_model_assignment(body: ModelAssignment, profile: Optional[str] = None):
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"""Assign a model to the main slot or an auxiliary task slot.
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Writes to ``~/.hermes/config.yaml`` — applies to **new** sessions only.
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The currently running chat PTY (if any) is not affected; use the
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``/model`` slash command inside a chat to hot-swap that specific session.
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"""
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scope = (body.scope or "").strip().lower()
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provider = (body.provider or "").strip()
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model = (body.model or "").strip()
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task = (body.task or "").strip().lower()
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base_url = (body.base_url or "").strip()
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api_key = (body.api_key or "").strip()
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if scope not in {"main", "auxiliary"}:
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raise HTTPException(status_code=400, detail="scope must be 'main' or 'auxiliary'")
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with http_failure("POST /api/model/set failed", 500, detail="Failed to save model assignment"):
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# Expensive-model warning runs BEFORE the profile scope is entered:
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# _profile_scope must never be held across an await (the RLock is
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# reentrant per-thread, so a second coroutine interleaving on the
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# event-loop thread could cross-restore the module globals).
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if model and not body.confirm_expensive_model:
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try:
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from hermes_cli.model_selection_guards import combined_selection_warning
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# Pricing lookup can hit models.dev / a /models endpoint on a
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# cache miss — keep it off the event loop.
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warning = await asyncio.to_thread(
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combined_selection_warning,
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model,
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provider=provider,
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base_url=base_url,
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)
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except Exception:
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warning = None
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if warning is not None:
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return {
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"ok": False,
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"scope": scope,
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"provider": provider,
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"model": model,
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"confirm_required": True,
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"confirm_message": warning.message,
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}
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def _apply_assignment():
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with _profile_scope(body.profile or profile):
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return _apply_model_assignment_sync(
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scope, provider, model, task, base_url, api_key
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)
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return await asyncio.to_thread(_apply_assignment)
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