deploy dc86eb14

app/main.py

@@ -165,8 +165,18 @@ def r2_read_all(coll):
 
 
 # ------------------------------------------------------------------------------------------------ access list
-_acl = {"data": None, "at": 0.0}
+_acl = {"data": None, "at": 0.0, "error": None}
 _acl_lock = threading.Lock()
+R2_ENV = ("R2_ACCOUNT_ID", "R2_ACCESS_KEY_ID", "R2_SECRET_ACCESS_KEY")
+
+
+def _error_code(e):
+    """A short, value-free reason for a failed store read: the S3 error code or the exception class."""
+    if isinstance(e, botocore.exceptions.ClientError):
+        return e.response.get("Error", {}).get("Code") or "ClientError"
+    if isinstance(e, RuntimeError) and str(e).endswith("is not set"):
+        return str(e)  # names the missing variable, never a value
+    return type(e).__name__
 
 
 def access_list():
@@ -176,8 +186,10 @@ def access_list():
         if _acl["data"] is not None and time.time() - _acl["at"] < ACCESS_TTL:
             return _acl["data"]
         try:
-            _acl["data"], _acl["at"] = r2_get(ACCESS_KEY) or {}, time.time()
-        except Exception:  # noqa: BLE001
+            _acl["data"], _acl["at"], _acl["error"] = r2_get(ACCESS_KEY) or {}, time.time(), None
+        except Exception as e:  # noqa: BLE001
+            _acl["error"] = _error_code(e)
+            print(f"access list read failed: {_acl['error']}", flush=True)
             if _acl["data"] is None or time.time() - _acl["at"] > ACCESS_STALE_MAX:
                 raise
         return _acl["data"]
@@ -254,6 +266,20 @@ def index():
     return FileResponse(STATIC / "index.html", media_type="text/html; charset=utf-8")
 
 
+@app.get("/status")
+def status():
+    """Unauthenticated health check: which store settings are present (true/false, never values) and whether the
+    access list can be read (an error code at most). Shows no data."""
+    try:
+        access_list()
+        state = "ok"
+    except Exception:  # noqa: BLE001
+        state = _acl["error"] or "error"
+    return JSONResponse({"store": STORE if "STORE" in globals() else "r2",
+                         "r2_settings_present": {n: bool(os.environ.get(n)) for n in R2_ENV},
+                         "access_list": state}, headers={"Cache-Control": "no-store"})
+
+
 @app.get("/app.js")
 def app_js():
     return FileResponse(STATIC / "app.js", media_type="text/javascript; charset=utf-8")

app/static/index.html

@@ -148,7 +148,7 @@ section { display: flex; flex-direction: column; gap: 12px; }
     <h2>Add or update a project</h2>
     <p>Each project is one JSON record under <code>projects/&lt;slug&gt;</code>, with access guides under <code>docs/&lt;id&gt;</code>. A session updates its own record with <code>python dataops/experiments_db.py</code>, and this page picks it up within a minute. Full instructions, fields and examples are in <code>DATA_EXPERIMENTS_DASHBOARD.md</code> at the root of the data-processing-tts repo.</p>
     <p>Trained on a dataset? Press <b>Mark SFT done</b> on its card and add a note (the run name or result). Anyone signed in can mark or undo it; everyone sees who marked it and when.</p>
-    <span class="build">build 412dabf8</span>
+    <span class="build">build dc86eb14</span>
   </div>
 </main>