analyze performance upgrade

django_project/IoTPreTester/settings.py

@@ -47,6 +47,7 @@ MIDDLEWARE = [
     "django.contrib.auth.middleware.AuthenticationMiddleware",
     "django.contrib.messages.middleware.MessageMiddleware",
     "django.middleware.clickjacking.XFrameOptionsMiddleware",
+    "IoTAnalyzer.middleware.RequestLogMiddleware",
 ]
 
 ROOT_URLCONF = "IoTPreTester.urls"
@@ -118,6 +119,71 @@ STATIC_ROOT = BASE_DIR / "staticfiles"
 CAPTURE_UPLOAD_DIR = Path(
     os.environ.get("CAPTURE_UPLOAD_DIR", BASE_DIR.parent / "uploads")
 )
+
+
+def env_int(name: str, default: int) -> int:
+    try:
+        return int(os.environ.get(name, default))
+    except (TypeError, ValueError):
+        return default
+
+
+# Bounds for a single capture analysis pass. 0 disables the packet limit and
+# reads the capture completely; large captures then take correspondingly longer.
+CAPTURE_PACKET_LIMIT = env_int("CAPTURE_PACKET_LIMIT", 0)
+CAPTURE_MAX_TEXT_PAYLOADS = env_int("CAPTURE_MAX_TEXT_PAYLOADS", 20000)
+CAPTURE_MAX_PAYLOAD_CHARS = env_int("CAPTURE_MAX_PAYLOAD_CHARS", 16384)
+
+# --- Logging -----------------------------------------------------------------
+# Console output goes to the container log; backend.log keeps a rotating copy.
+# Every capture analysis additionally writes <capture>.analysis.log next to
+# the upload, which the API exposes for troubleshooting.
+LOG_DIR = Path(os.environ.get("LOG_DIR", BASE_DIR.parent / "logs"))
+LOG_LEVEL = os.environ.get("LOG_LEVEL", "info").upper()
+try:
+    LOG_DIR.mkdir(parents=True, exist_ok=True)
+    _FILE_LOGGING = True
+except OSError:
+    _FILE_LOGGING = False
+
+LOGGING = {
+    "version": 1,
+    "disable_existing_loggers": False,
+    "formatters": {
+        "standard": {
+            "format": "%(asctime)s %(levelname)-7s [%(name)s] %(message)s",
+            "datefmt": "%Y-%m-%d %H:%M:%S",
+        },
+    },
+    "handlers": {
+        "console": {
+            "class": "logging.StreamHandler",
+            "formatter": "standard",
+            "stream": "ext://sys.stdout",
+        },
+        **({
+            "file": {
+                "class": "logging.handlers.RotatingFileHandler",
+                "formatter": "standard",
+                "filename": str(LOG_DIR / "backend.log"),
+                "maxBytes": 10 * 1024 * 1024,
+                "backupCount": 5,
+                "encoding": "utf-8",
+            },
+        } if _FILE_LOGGING else {}),
+    },
+    "root": {
+        "handlers": ["console"] + (["file"] if _FILE_LOGGING else []),
+        "level": LOG_LEVEL,
+    },
+    "loggers": {
+        "django": {"level": "INFO", "propagate": True},
+        "django.request": {"level": "WARNING", "propagate": True},
+        "django.server": {"level": "INFO", "propagate": True},
+        "IoTAnalyzer": {"level": LOG_LEVEL, "propagate": True},
+        "analyzer": {"level": LOG_LEVEL, "propagate": True},
+    },
+}
 DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField"
 APPEND_SLASH = False