Squashed 'l2/' content from commit 79caa24

git-subtree-dir: l2
git-subtree-split: 79caa24e2129bf6e2cee819327d5622425306b67

app/routers/renderers.py

@@ -0,0 +1,93 @@
+"""
+Renderer (L1) management routes for L2 server.
+
+L1 servers are configured via environment variable L1_SERVERS.
+Users connect to renderers to create and run recipes.
+"""
+
+import logging
+from typing import Optional
+
+import requests
+from fastapi import APIRouter, Request, Depends, HTTPException
+from fastapi.responses import HTMLResponse, RedirectResponse
+
+from artdag_common import render
+from artdag_common.middleware import wants_html, wants_json
+
+from ..config import settings
+from ..dependencies import get_templates, require_auth, get_user_from_cookie
+
+router = APIRouter()
+logger = logging.getLogger(__name__)
+
+
+def check_renderer_health(url: str, timeout: float = 5.0) -> bool:
+    """Check if a renderer is healthy."""
+    try:
+        resp = requests.get(f"{url}/", timeout=timeout)
+        return resp.status_code == 200
+    except Exception:
+        return False
+
+
+@router.get("")
+async def list_renderers(request: Request):
+    """List configured L1 renderers."""
+    # Get user if logged in
+    username = get_user_from_cookie(request)
+    user = None
+    if username:
+        # Get token for connection links
+        token = request.cookies.get("auth_token", "")
+        user = {"username": username, "token": token}
+
+    # Build server list with health status
+    servers = []
+    for url in settings.l1_servers:
+        servers.append({
+            "url": url,
+            "healthy": check_renderer_health(url),
+        })
+
+    if wants_json(request):
+        return {"servers": servers}
+
+    templates = get_templates(request)
+    return render(templates, "renderers/list.html", request,
+        servers=servers,
+        user=user,
+        active_tab="renderers",
+    )
+
+
+@router.get("/{path:path}")
+async def renderer_catchall(path: str, request: Request):
+    """Catch-all for invalid renderer URLs - redirect to list."""
+    if wants_json(request):
+        raise HTTPException(404, "Not found")
+    return RedirectResponse(url="/renderers", status_code=302)
+
+
+@router.post("")
+@router.post("/{path:path}")
+async def renderer_post_catchall(request: Request, path: str = ""):
+    """
+    Catch-all for POST requests.
+
+    The old API expected JSON POST to attach renderers.
+    Now renderers are env-configured, so redirect to the list.
+    """
+    if wants_json(request):
+        return {
+            "error": "Renderers are now configured via environment. See /renderers for available servers.",
+            "servers": settings.l1_servers,
+        }
+
+    templates = get_templates(request)
+    return render(templates, "renderers/list.html", request,
+        servers=[{"url": url, "healthy": check_renderer_health(url)} for url in settings.l1_servers],
+        user=get_user_from_cookie(request),
+        error="Renderers are configured by the system administrator. Use the Connect button to access a renderer.",
+        active_tab="renderers",
+    )