Merge pull request #287 from PierreF/cluster-client-threadsafe

Fix issue with cluster on multiple ports (Thanks @PierreF !)

Author: aviau

influxdb/client.py

@@ -76,7 +76,7 @@ def __init__(self,
                  ):
         """Construct a new InfluxDBClient object."""
         self.__host = host
-        self._port = port
+        self.__port = port
         self._username = username
         self._password = password
         self._database = database
@@ -110,7 +110,7 @@ def __init__(self,
             'Accept': 'text/plain'
         }
 
-    # _baseurl and _host are properties to allow InfluxDBClusterClient
+    # _baseurl, _host and _port are properties to allow InfluxDBClusterClient
     # to override them with thread-local variables
     @property
     def _baseurl(self):
@@ -126,6 +126,13 @@ def _host(self):
     def _get_host(self):
         return self.__host
 
+    @property
+    def _port(self):
+        return self._get_port()
+
+    def _get_port(self):
+        return self.__port
+
     @staticmethod
     def from_DSN(dsn, **kwargs):
         """Return an instance of :class:`~.InfluxDBClient` from the provided
@@ -806,6 +813,7 @@ def __init__(self,
             setattr(self, method, self._make_func(orig_attr))
 
         self._client._get_host = self._get_host
+        self._client._get_port = self._get_port
         self._client._get_baseurl = self._get_baseurl
         self._update_client_host(self.hosts[0])
 
@@ -856,6 +864,9 @@ def _get_baseurl(self):
     def _get_host(self):
         return self._thread_local.host
 
+    def _get_port(self):
+        return self._thread_local.port
+
     def _make_func(self, orig_func):
 
         @wraps(orig_func)