Take advantage of the sensible defaults for command records.

Per Ben Hood, The codegen module creates sensible defaults for the command
records, so unless you need to override an attribute, you can make
your record definitions more concise;

src/stocks_example.erl

@@ -20,27 +20,20 @@ amqp_lifecycle() ->
     X = <<"stocks">>,
     BindKey = <<"#">>,
 
-    QueueDeclare = #'queue.declare'{queue = Q,
-                                    passive = false, durable = false,
-                                    exclusive = false, auto_delete = false,
-                                    nowait = false, arguments = []},
+    QueueDeclare = #'queue.declare'{queue = Q},
     #'queue.declare_ok'{queue = Q,
                         message_count = MessageCount,
                         consumer_count = ConsumerCount}
                             = amqp_channel:call(Channel, QueueDeclare),
     log(message_count,MessageCount),
     log(consumer_count,ConsumerCount),
 
-    ExchangeDeclare = #'exchange.declare'{exchange = X, type = <<"topic">>,
-                                          passive = false, durable = false,
-                                          auto_delete = false, internal = false,
-                                          nowait = false, arguments = []},
+    ExchangeDeclare = #'exchange.declare'{exchange = X, type = <<"topic">>},
     #'exchange.declare_ok'{} = amqp_channel:call(Channel, ExchangeDeclare),
 
     QueueBind = #'queue.bind'{queue = Q,
                               exchange = X,
-                              routing_key = BindKey,
-                              nowait = false, arguments = []},
+                              routing_key = BindKey},
     #'queue.bind_ok'{} = amqp_channel:call(Channel, QueueBind),
 
     %% Inject a sample message so we have something to consume later on.  For testing purposes only.
@@ -56,8 +49,7 @@ amqp_lifecycle() ->
 
     %% After you've finished with the channel and connection you should close them down
     log(channel_close,"start"),
-    ChannelClose = #'channel.close'{reply_code = 200, reply_text = <<"Goodbye">>,
-                                    class_id = 0, method_id = 0},
+    ChannelClose = #'channel.close'{reply_code = 200, class_id = 0, method_id = 0},
     #'channel.close_ok'{} = amqp_channel:call(Channel, ChannelClose),
 
     log(connection_close,"start"),
@@ -67,10 +59,7 @@ amqp_lifecycle() ->
 
 send_message(Channel, X, RoutingKey, Payload) ->
     log(send_message,"basic.publish setup"),
-    BasicPublish = #'basic.publish'{exchange = X,
-                                    routing_key = RoutingKey,
-                                    mandatory = false,
-                                    immediate = false},
+    BasicPublish = #'basic.publish'{exchange = X, routing_key = RoutingKey},
 
     log(send_message,"amqp_channel:cast"),
     ok = amqp_channel:cast(Channel, BasicPublish, _MsgPayload = #amqp_msg{payload = Payload}).
@@ -81,10 +70,7 @@ setup_consumer(Channel, Q) ->
     log(setup_consumer,"basic.consume"),
     BasicConsume = #'basic.consume'{queue = Q,
                                     consumer_tag = <<"">>,
-                                    no_local = false,
-                                    no_ack = true,
-                                    exclusive = false,
-                                    nowait = false},
+                                    no_ack = true},
     #'basic.consume_ok'{consumer_tag = ConsumerTag}
                      = amqp_channel:subscribe(Channel, BasicConsume, self()),
 
@@ -103,8 +89,7 @@ setup_consumer(Channel, Q) ->
 
     %% After the consumer is finished interacting with the queue, it can deregister itself
     log(basic_cancel,"start"),
-    BasicCancel = #'basic.cancel'{consumer_tag = ConsumerTag,
-                                  nowait = false},
+    BasicCancel = #'basic.cancel'{consumer_tag = ConsumerTag},
     #'basic.cancel_ok'{consumer_tag = ConsumerTag} = amqp_channel:call(Channel,BasicCancel).
 
 read_messages(Timeouts) ->