decomposer: generate deliverable files for Define the service contract and project architecture for the FastAPI endpoint monitoring service.; Implement the typed monitor CRUD API and concurrency-safe in-memory state according to the service design.; Implement secure on-demand endpoint checks with status updates, latency measurement, robust error handling, and redacted structured logs.; Add operational API endpoints and environment-driven runtime configuration to the monitoring service.; Create automated tests for the monitoring service.; Package the service with Docker and developer documentation.; Validate the complete project.

app/logging_config.py

@@ -0,0 +1,43 @@
+import json
+import logging
+from urllib.parse import urlsplit, urlunsplit
+
+
+SENSITIVE_KEYS = {"url", "location"}
+
+
+def redact_url(value: str) -> str:
+    try:
+        parts = urlsplit(value)
+        if not parts.scheme or not parts.hostname:
+            return "[redacted]"
+        host = parts.hostname
+        if ":" in host:
+            host = f"[{host}]"
+        if parts.port:
+            host = f"{host}:{parts.port}"
+        return urlunsplit((parts.scheme, host, parts.path, "", ""))
+    except (TypeError, ValueError):
+        return "[redacted]"
+
+
+class JsonFormatter(logging.Formatter):
+    def format(self, record: logging.LogRecord) -> str:
+        payload: dict[str, object] = {
+            "level": record.levelname,
+            "logger": record.name,
+            "message": record.getMessage(),
+        }
+        fields = getattr(record, "fields", {})
+        if isinstance(fields, dict):
+            for key, value in fields.items():
+                payload[key] = redact_url(str(value)) if key in SENSITIVE_KEYS else value
+        return json.dumps(payload, default=str, separators=(",", ":"))
+
+
+def configure_logging(level: str) -> None:
+    handler = logging.StreamHandler()
+    handler.setFormatter(JsonFormatter())
+    root = logging.getLogger()
+    root.handlers = [handler]
+    root.setLevel(level)