[Stats] metrics agent exporter (#9361)

python/ray/parameter.py

@@ -87,6 +87,7 @@ class RayParams:
             Java worker.
         java_worker_options (list): The command options for Java worker.
         load_code_from_local: Whether load code from local file or from GCS.
+        metrics_agent_port(int): The port to bind metrics agent.
         _internal_config (str): JSON configuration for overriding
             RayConfig defaults. For testing purposes ONLY.
         lru_evict (bool): Enable LRU eviction if space is needed.
@@ -132,6 +133,7 @@ class RayParams:
                  java_worker_options=None,
                  load_code_from_local=False,
                  _internal_config=None,
+                 metrics_agent_port=None,
                  lru_evict=False):
         self.object_ref_seed = object_ref_seed
         self.redis_address = redis_address
@@ -169,6 +171,7 @@ class RayParams:
         self.include_java = include_java
         self.java_worker_options = java_worker_options
         self.load_code_from_local = load_code_from_local
+        self.metrics_agent_port = metrics_agent_port
         self._internal_config = _internal_config
         self._lru_evict = lru_evict
         self._check_usage()