feat: #85 T10 persistance etat (verrous stores, ratelimit SQLite) et cloture refonte

backend/auth/jwt_handler.py

@@ -119,25 +119,30 @@ def decode_token(token: str) -> dict | None:
 _revoked_map: dict[str, int] = {}
 _revoked_loaded = False
 
+# ROADMAP #85 T10a — verrou autour du read-modify-write du store de
+# révocation (perte de révocations en cas de logouts concurrents).
+_revoked_lock = threading.RLock()
+
 
 def _load_revoked():
     """Load revoked token JTIs from disk into memory (once)."""
     global _revoked_loaded, _revoked_map
-    if _revoked_loaded:
-        return
-    if REVOKED_TOKENS_FILE.exists():
-        try:
-            data = json.loads(REVOKED_TOKENS_FILE.read_text())
-            # Drop entries whose underlying token has itself expired.
-            now = int(time.time())
-            _revoked_map = {
-                jti: int(exp) for jti, exp in data.items()
-                if int(exp) > now
-            }
-        except Exception as e:
-            logger.warning(f"Failed to load revoked tokens: {e}")
-            _revoked_map = {}
-    _revoked_loaded = True
+    with _revoked_lock:
+        if _revoked_loaded:
+            return
+        if REVOKED_TOKENS_FILE.exists():
+            try:
+                data = json.loads(REVOKED_TOKENS_FILE.read_text())
+                # Drop entries whose underlying token has itself expired.
+                now = int(time.time())
+                _revoked_map = {
+                    jti: int(exp) for jti, exp in data.items()
+                    if int(exp) > now
+                }
+            except Exception as e:
+                logger.warning(f"Failed to load revoked tokens: {e}")
+                _revoked_map = {}
+        _revoked_loaded = True
 
 
 def _save_revoked():
@@ -154,24 +159,26 @@ def revoke_token(jti: str, expires_at: int | None = None):
     ``expires_at`` is the revoked token's own ``exp`` (unix seconds) — the
     record is kept at least that long so a long-lived API token cannot
     outlive its revocation. ``None`` means the token never expires (API/MCP
-    "sans fin") → the record is kept forever (capped at ~100 years, the JWT
+    "sans fin") → the     record is kept forever (capped at ~100 years, the JWT
     store's practical infinity). Default keeps 7 days (session tokens).
     """
-    _load_revoked()
-    now = int(time.time())
-    if expires_at is None:
-        until = now + 100 * 365 * 24 * 3600
-    else:
-        until = max(int(expires_at), now + REFRESH_TOKEN_EXPIRE_SECONDS)
-    _revoked_map[jti] = until
-    _save_revoked()
+    with _revoked_lock:
+        _load_revoked()
+        now = int(time.time())
+        if expires_at is None:
+            until = now + 100 * 365 * 24 * 3600
+        else:
+            until = max(int(expires_at), now + REFRESH_TOKEN_EXPIRE_SECONDS)
+        _revoked_map[jti] = until
+        _save_revoked()
     logger.debug(f"Revoked token JTI: {jti[:8]}...")
 
 
 def is_token_revoked(jti: str) -> bool:
     """Check if a token JTI has been revoked."""
-    _load_revoked()
-    return jti in _revoked_map
+    with _revoked_lock:
+        _load_revoked()
+        return jti in _revoked_map
 
 
 # ---------------------------------------------------------------------------