Feat: message manage (#12196)

### What problem does this PR solve?

Manage message and use in agent.

Issue #4213 

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

common/doc_store/es_conn_pool.py

@@ -0,0 +1,84 @@
+#
+#  Copyright 2025 The InfiniFlow Authors. All Rights Reserved.
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+#
+import logging
+import time
+from elasticsearch import Elasticsearch
+
+from common import settings
+from common.decorator import singleton
+
+ATTEMPT_TIME = 2
+
+
+@singleton
+class ElasticSearchConnectionPool:
+
+    def __init__(self):
+        if hasattr(settings, "ES"):
+            self.ES_CONFIG = settings.ES
+        else:
+            self.ES_CONFIG = settings.get_base_config("es", {})
+
+        for _ in range(ATTEMPT_TIME):
+            try:
+                if self._connect():
+                    break
+            except Exception as e:
+                logging.warning(f"{str(e)}. Waiting Elasticsearch {self.ES_CONFIG['hosts']} to be healthy.")
+                time.sleep(5)
+
+        if not hasattr(self, "es_conn") or not self.es_conn or not self.es_conn.ping():
+            msg = f"Elasticsearch {self.ES_CONFIG['hosts']} is unhealthy in 10s."
+            logging.error(msg)
+            raise Exception(msg)
+        v = self.info.get("version", {"number": "8.11.3"})
+        v = v["number"].split(".")[0]
+        if int(v) < 8:
+            msg = f"Elasticsearch version must be greater than or equal to 8, current version: {v}"
+            logging.error(msg)
+            raise Exception(msg)
+
+    def _connect(self):
+        self.es_conn = Elasticsearch(
+            self.ES_CONFIG["hosts"].split(","),
+            basic_auth=(self.ES_CONFIG["username"], self.ES_CONFIG[
+                "password"]) if "username" in self.ES_CONFIG and "password" in self.ES_CONFIG else None,
+            verify_certs= self.ES_CONFIG.get("verify_certs", False),
+            timeout=600 )
+        if self.es_conn:
+            self.info = self.es_conn.info()
+            return True
+        return False
+
+    def get_conn(self):
+        return self.es_conn
+
+    def refresh_conn(self):
+        if self.es_conn.ping():
+            return self.es_conn
+        else:
+            # close current if exist
+            if self.es_conn:
+                self.es_conn.close()
+            self._connect()
+            return self.es_conn
+
+    def __del__(self):
+        if hasattr(self, "es_conn") and self.es_conn:
+            self.es_conn.close()
+
+
+ES_CONN = ElasticSearchConnectionPool()