improve examples / updating docs / adding credits to consumer

Author: DanielePalaia

README.md

@@ -2,6 +2,20 @@
 
 This library is in early stages of development. It is meant to be used with RabbitMQ 4.0.
 
+# Table of Contents
+
+- [How to Build the project and run the tests](#How-to-Build-the-project-and-run-the-tests)
+- [Installation](#Installation)
+- [Getting started](#Getting-Started)
+    * [Creating a connection](#Creating-a-connection)
+    * [Managing resources](#Managing-resources)
+    * [Publishing messages](#Publishing-messages)
+    * [Consuming messages](#Consuming-messages)
+    * [Support for streams](#support-for-streams)
+    * [SSL connection](#ssl-connections)
+    * [Managing disconnections](#Managing-disconnections)
+
+
 ## How to Build the project and run the tests
 
 - Start a RabbitMQ 4.x broker
@@ -18,7 +32,7 @@ The client is distributed via [`PIP`](https://pypi.org/project/rabbitmq-amqp-pyt
 
 ## Getting Started
 
-An example is provided in ./getting_started_main.py you can run it after starting a RabbitMQ 4.0 broker with:
+An example is provided [`here`](./examples/getting_started/basic_example.py) you can run it after starting a RabbitMQ 4.0 broker with:
 
 poetry run python ./examples/getting_started/main.py
 
@@ -109,6 +123,33 @@ Then from connection get a consumer object:
 
 The consumer will run indefinitively waiting for messages to arrive.
 
+### Support for streams
+
+The client natively supports streams: https://www.rabbitmq.com/blog/2021/07/13/rabbitmq-streams-overview
+
+You can consume from a given offset or specify a default starting point (FIRST, NEXT, LAST).
+
+Streams filtering is also supported: https://www.rabbitmq.com/blog/2023/10/16/stream-filtering
+
+You can check the [`stream example`](./examples/getting_started/example_with_streams.py) to see how to work with RabbitMQ streams.
+
+### SSL connections
+
+The client supports TLS/SSL connections.
+
+You can check the [`ssl example`](./examples/getting_started/tls_example.py) to see how to establish a secured connection
+
+
+### Managing disconnections
+
+At this stage the client doesn't support auto-reconnect but a callback is invoked everytime a remote disconnection is detected.
+You can use this callback to implement your own logic and eventually attempt a reconnection.
+
+You can check the [`reconnection example`](./examples/getting_started/reconnection_example.py) to see how to manage disconnections and
+eventually attempt a reconnection
+
+
+
 
 
 

examples/getting_started/basic_example.py

@@ -6,13 +6,14 @@
     AMQPMessagingHandler,
     BindingSpecification,
     Connection,
+    Disposition,
     Event,
     ExchangeSpecification,
     Message,
     QuorumQueueSpecification,
 )
 
-messages_to_publish = 100
+MESSAGES_TO_PUBLISH = 100
 
 
 class MyMessageHandler(AMQPMessagingHandler):
@@ -45,7 +46,7 @@ def on_message(self, event: Event):
 
         self._count = self._count + 1
 
-        if self._count == messages_to_publish:
+        if self._count == MESSAGES_TO_PUBLISH:
             print("closing receiver")
             # if you want you can add cleanup operations here
             # event.receiver.close()
@@ -62,17 +63,6 @@ def on_link_closed(self, event: Event) -> None:
 
 def create_connection() -> Connection:
     connection = Connection("amqp://guest:guest@localhost:5672/")
-    # in case of SSL enablement
-    # ca_cert_file = ".ci/certs/ca_certificate.pem"
-    # client_cert = ".ci/certs/client_certificate.pem"
-    # client_key = ".ci/certs/client_key.pem"
-    # connection = Connection(
-    #    "amqps://guest:guest@localhost:5671/",
-    #    ssl_context=SslConfigurationContext(
-    #        ca_cert=ca_cert_file,
-    #        client_cert=ClientCert(client_cert=client_cert, client_key=client_key),
-    #    ),
-    # )
     connection.dial()
 
     return connection
@@ -120,13 +110,14 @@ def main() -> None:
     # management.close()
 
     # publish 10 messages
-    for i in range(messages_to_publish):
+    for i in range(MESSAGES_TO_PUBLISH):
+        print("publishing")
         status = publisher.publish(Message(body="test"))
-        if status.ACCEPTED:
+        if status.remote_state == Disposition.ACCEPTED:
             print("message accepted")
-        elif status.RELEASED:
+        elif status.remote_state == Disposition.RELEASED:
             print("message not routed")
-        elif status.REJECTED:
+        elif status.remote_state == Disposition.REJECTED:
             print("message not rejected")
 
     publisher.close()

examples/getting_started/example_with_streams.py

@@ -11,6 +11,8 @@
     StreamSpecification,
 )
 
+MESSAGES_TO_PUBLISH = 100
+
 
 class MyMessageHandler(AMQPMessagingHandler):
 
@@ -19,6 +21,7 @@ def __init__(self):
         self._count = 0
 
     def on_message(self, event: Event):
+        # just messages with banana filters get received
         print(
             "received message from stream: "
             + str(event.message.body)
@@ -47,7 +50,7 @@ def on_message(self, event: Event):
 
         self._count = self._count + 1
 
-        if self._count == 100:
+        if self._count == MESSAGES_TO_PUBLISH:
             print("closing receiver")
             # if you want you can add cleanup operations here
             # event.receiver.close()
@@ -64,25 +67,13 @@ def on_link_closed(self, event: Event) -> None:
 
 def create_connection() -> Connection:
     connection = Connection("amqp://guest:guest@localhost:5672/")
-    # in case of SSL enablement
-    # ca_cert_file = ".ci/certs/ca_certificate.pem"
-    # client_cert = ".ci/certs/client_certificate.pem"
-    # client_key = ".ci/certs/client_key.pem"
-    # connection = Connection(
-    #    "amqps://guest:guest@localhost:5671/",
-    #    ssl_context=SslConfigurationContext(
-    #        ca_cert=ca_cert_file,
-    #        client_cert=ClientCert(client_cert=client_cert, client_key=client_key),
-    #    ),
-    # )
     connection.dial()
 
     return connection
 
 
 def main() -> None:
     queue_name = "example-queue"
-    messages_to_publish = 100
 
     print("connection to amqp server")
     connection = create_connection()
@@ -99,6 +90,7 @@ def main() -> None:
     # can be first, last, next or an offset long
     # you can also specify stream filters with methods: apply_filters and filter_match_unfiltered
     stream_filter_options.offset(OffsetSpecification.first)
+    stream_filter_options.apply_filters(["banana"])
 
     consumer = consumer_connection.consumer(
         addr_queue,
@@ -112,8 +104,22 @@ def main() -> None:
     # print("create a publisher and publish a test message")
     publisher = connection.publisher(addr_queue)
 
-    for i in range(messages_to_publish):
-        publisher.publish(Message(body="test: " + str(i)))
+    # publish with a filter of apple
+    for i in range(MESSAGES_TO_PUBLISH):
+        publisher.publish(
+            Message(
+                body="apple: " + str(i), annotations={"x-stream-filter-value": "apple"}
+            )
+        )
+
+    # publish with a filter of banana
+    for i in range(MESSAGES_TO_PUBLISH):
+        publisher.publish(
+            Message(
+                body="banana: " + str(i),
+                annotations={"x-stream-filter-value": "banana"},
+            )
+        )
 
     publisher.close()
 

examples/getting_started/reconnection_example.py

@@ -31,7 +31,7 @@ class ConnectionConfiguration:
 
 
 connection_configuration = ConnectionConfiguration()
-messages_to_publish = 50000
+MESSAGES_TO_PUBLSH = 50000
 
 
 # disconnection callback
@@ -95,7 +95,7 @@ def on_message(self, event: Event):
 
         self._count = self._count + 1
 
-        if self._count == messages_to_publish:
+        if self._count == MESSAGES_TO_PUBLSH:
             print("closing receiver")
             # if you want you can add cleanup operations here
             # event.receiver.close()
@@ -181,7 +181,7 @@ def main() -> None:
 
     # publishing messages
     while True:
-        for i in range(messages_to_publish):
+        for i in range(MESSAGES_TO_PUBLSH):
 
             if i % 1000 == 0:
                 print("published 1000 messages...")