From 45da03afada015e94f0570db5943e4e2450f484d Mon Sep 17 00:00:00 2001
From: Prashant Mital <prashantmital@gmail.com>
Date: Thu, 8 Aug 2019 16:03:53 -0700
Subject: [PATCH] PYTHON-1914 MongoClient.is_locked should not raise
 DeprecationWarning

---
 pymongo/database.py     | 30 +++++++++++++++++-------------
 pymongo/mongo_client.py |  2 +-
 test/test_client.py     |  8 ++++++++
 3 files changed, 26 insertions(+), 14 deletions(-)

diff --git a/pymongo/database.py b/pymongo/database.py
index 52fbda81e..c6900fed1 100644
--- a/pymongo/database.py
+++ b/pymongo/database.py
@@ -979,6 +979,21 @@ class Database(common.BaseObject):
 
         return result
 
+    def _current_op(self, include_all=False, session=None):
+        """Helper for running $currentOp."""
+        cmd = SON([("currentOp", 1), ("$all", include_all)])
+        with self.__client._socket_for_writes(session) as sock_info:
+            if sock_info.max_wire_version >= 4:
+                return self.__client.admin._command(
+                    sock_info, cmd, codec_options=self.codec_options,
+                    session=session)
+            else:
+                spec = {"$all": True} if include_all else {}
+                return _first_batch(sock_info, "admin", "$cmd.sys.inprog",
+                                    spec, -1, True, self.codec_options,
+                                    ReadPreference.PRIMARY, cmd,
+                                    self.client._event_listeners)
+
     def current_op(self, include_all=False, session=None):
         """**DEPRECATED**: Get information on operations currently running.
 
@@ -1015,21 +1030,10 @@ class Database(common.BaseObject):
         .. _$currentOp aggregation pipeline stage: https://docs.mongodb.com/manual/reference/operator/aggregation/currentOp/
         .. _currentOp command: https://docs.mongodb.com/manual/reference/command/currentOp/
         """
-        warnings.warn("current_op() is deprecated. See the documentation for"
+        warnings.warn("current_op() is deprecated. See the documentation for "
                       "more information",
                       DeprecationWarning, stacklevel=2)
-        cmd = SON([("currentOp", 1), ("$all", include_all)])
-        with self.__client._socket_for_writes(session) as sock_info:
-            if sock_info.max_wire_version >= 4:
-                return self.__client.admin._command(
-                    sock_info, cmd, codec_options=self.codec_options,
-                    session=session)
-            else:
-                spec = {"$all": True} if include_all else {}
-                return _first_batch(sock_info, "admin", "$cmd.sys.inprog",
-                                    spec, -1, True, self.codec_options,
-                                    ReadPreference.PRIMARY, cmd,
-                                    self.client._event_listeners)
+        return self._current_op(include_all, session)
 
     def profiling_level(self, session=None):
         """Get the database's current profiling level.
diff --git a/pymongo/mongo_client.py b/pymongo/mongo_client.py
index 019033133..80a5db454 100644
--- a/pymongo/mongo_client.py
+++ b/pymongo/mongo_client.py
@@ -2065,7 +2065,7 @@ class MongoClient(common.BaseObject):
         are blocked, although read operations may still be allowed.
         Use :meth:`unlock` to unlock.
         """
-        ops = self._database_default_options('admin').current_op()
+        ops = self._database_default_options('admin')._current_op()
         return bool(ops.get('fsyncLock', 0))
 
     def fsync(self, **kwargs):
diff --git a/test/test_client.py b/test/test_client.py
index c67f07f60..1b255045a 100644
--- a/test/test_client.py
+++ b/test/test_client.py
@@ -1064,6 +1064,14 @@ class TestClient(IntegrationTest):
             time.sleep(1)
         self.assertFalse(locked)
 
+    def test_is_locked_does_not_raise_warning(self):
+        client = rs_or_single_client()
+        with warnings.catch_warnings(record=True) as ctx:
+            warnings.simplefilter("always")
+            _ = client.is_locked
+            self.assertFalse(
+                any(issubclass(w.category, DeprecationWarning) for w in ctx))
+
     def test_contextlib(self):
         client = rs_or_single_client()
         client.pymongo_test.drop_collection("test")