Working through the confirmation example

albeit with code that works rather than what came with the book.  Hmm...

sylvilagus/python/setup.py

@@ -8,6 +8,6 @@ setup(
     description='crap accumulated while reading through RabbitMQ in Action',
     packages=['sylvilagus'],
     install_requires=[
-        'pika >= 0.9.6'
+        'pika == 0.9.6'
     ]
 )

sylvilagus/python/sylvilagus/chapter02/hello_world.py

@@ -1,16 +1,36 @@
 import pika
 
 
-def get_channel():
+def get_conn_params():
     credentials = pika.PlainCredentials('guest', 'guest')
-    conn_params = pika.ConnectionParameters('localhost',
+    return pika.ConnectionParameters('localhost', credentials=credentials)
-                                            credentials=credentials)
+
-    channel = pika.BlockingConnection(conn_params).channel()
+
-    channel.exchange_declare(exchange='hello-exchange',
+def get_nonblocking_channel(declare_exchange=True):
-                             type='direct',
+    channel = pika.SelectConnection(get_conn_params()).channel()
+
+    if declare_exchange:
+        channel.exchange_declare(
+            exchange='hello-exchange',
+            exchange_type='direct',
             passive=False,
             durable=True,
-                             auto_delete=False)
+            auto_delete=False
+        )
 
     return channel
 
+
+def get_channel(declare_exchange=True):
+    channel = pika.BlockingConnection(get_conn_params()).channel()
+
+    if declare_exchange:
+        channel.exchange_declare(
+            exchange='hello-exchange',
+            exchange_type='direct',
+            passive=False,
+            durable=True,
+            auto_delete=False
+        )
+
+    return channel

sylvilagus/python/sylvilagus/chapter02/hello_world_producer_with_confirms.py

@@ -0,0 +1,37 @@
+from __future__ import print_function
+
+import logging
+import sys
+
+import pika
+
+from sylvilagus.chapter02 import hello_world
+
+
+def main(sysargs=sys.argv[:]):
+    msg = sysargs[1]
+
+    logging.basicConfig()
+
+    channel = hello_world.get_channel()
+
+    if channel.basic_publish(
+            body=msg,
+            exchange='hello-exchange',
+            properties=pika.BasicProperties(
+                content_type='text/plain',
+                delivery_mode=1
+            ),
+            routing_key='hola',
+            mandatory=True):
+        print('Message delivered!')
+    else:
+        print('Message returned!')
+
+    channel.close()
+
+    return 0
+
+
+if __name__ == '__main__':
+    sys.exit(main())