fix: llm_bridge reads model config from llm DB table, falls back to env vars

pipeline_service/llm_bridge.py

@@ -1,8 +1,9 @@
-"""LLM bridge for pipeline handlers.
+"""
+LLM bridge for pipeline handlers.
 
 Provides a simple async interface for handlers to call LLM APIs.
-Uses harnessed_agent's llm_chat under the hood when available,
-falls back to direct HTTP calls.
+Looks up model config from the llm database table first,
+falls back to environment variables.
 """
 
 import json
@@ -11,15 +12,54 @@ import os
 
 logger = logging.getLogger("pipeline.llm_bridge")
 
+# Cache: model_name -> {api_base, api_key, model_id}
+_model_cache: dict = {}
+
+
+async def _get_model_config(model_name: str = None) -> dict:
+    """Look up model config from llm table. Returns dict with api_base, api_key, model_id."""
+    global _model_cache
+
+    if model_name and model_name in _model_cache:
+        return _model_cache[model_name]
+
+    try:
+        from sqlor.dbpools import DBPools
+        db = DBPools()
+        dbname = "pipeline"
+        async with db.sqlorContext(dbname) as sor:
+            if model_name:
+                sql = "SELECT api_base, api_key, model_id FROM llm WHERE name=${name}$ AND status='active' LIMIT 1"
+                recs = await sor.sqlExe(sql, {"name": model_name})
+            else:
+                sql = "SELECT api_base, api_key, model_id, name FROM llm WHERE status='active' ORDER BY id LIMIT 1"
+                recs = await sor.sqlExe(sql, {})
+            if recs:
+                r = recs[0]
+                cfg = {
+                    "api_base": getattr(r, "api_base", "") or "",
+                    "api_key": getattr(r, "api_key", "") or "",
+                    "model_id": getattr(r, "model_id", "") or "",
+                }
+                cache_key = model_name or getattr(r, "name", "")
+                if cache_key:
+                    _model_cache[cache_key] = cfg
+                return cfg
+    except Exception as e:
+        logger.warning("llm_bridge: DB lookup failed: %s", e)
+
+    return {}
+
 
 async def llm_call(prompt: str, model: str = None, temperature: float = 0.7) -> str:
     """Call LLM and return text response.
-    
-    Tries multiple backends:
+
+    Backend priority:
     1. harnessed_agent.llm_chat (if loaded in ServerEnv)
-    2. Direct OpenAI-compatible API call
+    2. DB llm table (api_base + api_key)
+    3. Environment variables (LLM_API_BASE, LLM_API_KEY, LLM_MODEL)
     """
-    # Try harnessed_agent first
+    # Priority 1: harnessed_agent
     try:
         from ahserver.serverenv import ServerEnv
         env = ServerEnv()
@@ -31,32 +71,42 @@ async def llm_call(prompt: str, model: str = None, temperature: float = 0.7) ->
     except Exception:
         pass
 
-    # Fallback: direct HTTP call to OpenAI-compatible endpoint
-    import aiohttp
-    
-    api_base = os.environ.get("LLM_API_BASE", "https://api.openai.com/v1")
-    api_key = os.environ.get("LLM_API_KEY", "")
-    model = model or os.environ.get("LLM_MODEL", "gpt-4o-mini")
-    
+    # Priority 2: DB llm table
+    cfg = await _get_model_config(model)
+    if cfg.get("api_key") and cfg.get("api_base"):
+        api_base = cfg["api_base"]
+        api_key = cfg["api_key"]
+        model_id = cfg.get("model_id") or model or "default"
+        logger.info("llm_bridge: using DB model config for %s -> %s", model, api_base)
+    else:
+        # Priority 3: Environment variables
+        api_base = os.environ.get("LLM_API_BASE", "https://api.openai.com/v1")
+        api_key = os.environ.get("LLM_API_KEY", "")
+        model_id = model or os.environ.get("LLM_MODEL", "gpt-4o-mini")
+
     if not api_key:
-        raise ValueError("No LLM API configured (set LLM_API_KEY env var)")
+        raise ValueError("No LLM API configured. Please add a model in the llm table or set LLM_API_KEY env var.")
+
+    import aiohttp
 
     headers = {
         "Authorization": f"Bearer {api_key}",
         "Content-Type": "application/json",
     }
     payload = {
-        "model": model,
+        "model": model_id,
         "messages": [{"role": "user", "content": prompt}],
         "temperature": temperature,
     }
 
+    url = api_base.rstrip("/") + "/chat/completions"
     async with aiohttp.ClientSession() as session:
         async with session.post(
-            f"{api_base}/chat/completions", headers=headers, json=payload, timeout=aiohttp.ClientTimeout(total=120)
+            url, headers=headers, json=payload,
+            timeout=aiohttp.ClientTimeout(total=120)
         ) as resp:
             if resp.status != 200:
                 text = await resp.text()
-                raise ValueError(f"LLM API error {resp.status}: {text[:200]}")
+                raise ValueError(f"LLM API error {resp.status}: {text[:300]}")
             data = await resp.json()
             return data["choices"][0]["message"]["content"]