added more experimental slots to classes

4 files changed, 37 insertions, 0 deletions

diff --git a/amqp/channel.py b/amqp/channel.py
index b271820..281fc46 100644
--- a/amqp/channel.py
+++ b/amqp/channel.py
@@ -122,6 +122,18 @@ class Channel(AbstractChannel):
         if self.connection.confirm_publish:
             self.basic_publish = self.basic_publish_confirm
 
+        __slots__ = (
+        "is_open",
+        "active",
+        "returned_messages",
+        "callbacks",
+        "cancel_callbacks",
+        "events",
+        "no_ack_consumers",
+        "on_open",
+        "_confirm_selected",
+        )
+
     def then(self, on_success, on_error=None):
         return self.on_open.then(on_success, on_error)
 
diff --git a/amqp/method_framing.py b/amqp/method_framing.py
index 5fe0505..658061e 100644
--- a/amqp/method_framing.py
+++ b/amqp/method_framing.py
@@ -87,6 +87,10 @@ class Buffer:
     def __init__(self, buf):
         self.buf = buf
 
+    __slots__ = (
+        "buf",
+        )
+
     @property
     def buf(self):
         return self._buf
diff --git a/amqp/sasl.py b/amqp/sasl.py
index 9a98a7a..407ccb8 100644
--- a/amqp/sasl.py
+++ b/amqp/sasl.py
@@ -34,6 +34,11 @@ class PLAIN(SASL):
     def __init__(self, username, password):
         self.username, self.password = username, password
 
+    __slots__ = (
+        "username",
+        "password",
+        )
+
     def start(self, connection):
         if self.username is None or self.password is None:
             return NotImplemented
@@ -56,6 +61,11 @@ class AMQPLAIN(SASL):
     def __init__(self, username, password):
         self.username, self.password = username, password
 
+    __slots__ = (
+        "username",
+        "password",
+        )
+
     def start(self, connection):
         if self.username is None or self.password is None:
             return NotImplemented
@@ -104,6 +114,13 @@ def _get_gssapi_mechanism():
                 self.service = service
                 self.rdns = rdns
 
+            __slots__ = (
+                "client_name",
+                "fail_soft",
+                "service",
+                "rdns"
+                )
+
             def get_hostname(self, connection):
                 sock = connection.transport.sock
                 if self.rdns and sock.family in (socket.AF_INET,
diff --git a/amqp/transport.py b/amqp/transport.py
index 8a355d7..cebd3b6 100644
--- a/amqp/transport.py
+++ b/amqp/transport.py
@@ -415,6 +415,10 @@ class SSLTransport(_AbstractTransport):
         super().__init__(
             host, connect_timeout=connect_timeout, **kwargs)
 
+    __slots__ = (
+        "sslopts",
+        )
+
     def _setup_transport(self):
         """Wrap the socket in an SSL object."""
         self.sock = self._wrap_socket(self.sock, **self.sslopts)