From 3ecee6c2000c85d0213e6fba3528d30bf6d2ca78 Mon Sep 17 00:00:00 2001
From: Marco Zeisler <marco.zeisler@kapsch.net>
Date: Sat, 10 Apr 2021 16:50:16 +0200
Subject: [PATCH] use exchange instead of queue to allow multiple subscribers

---
 .../.run/createsuperuser.run.xml              | 24 ------------
 .../entitiy_ident/.run/makemigrations.run.xml | 24 ------------
 components/entitiy_ident/.run/migrate.run.xml | 24 ------------
 .../entitiy_ident/.run/runserver.run.xml      | 24 ------------
 .../exampleReceiver.py                        | 38 +++++++++----------
 msg_broker_rabbit_mq_example/exampleSender.py | 10 +++--
 6 files changed, 24 insertions(+), 120 deletions(-)
 delete mode 100644 components/entitiy_ident/.run/createsuperuser.run.xml
 delete mode 100644 components/entitiy_ident/.run/makemigrations.run.xml
 delete mode 100644 components/entitiy_ident/.run/migrate.run.xml
 delete mode 100644 components/entitiy_ident/.run/runserver.run.xml

diff --git a/components/entitiy_ident/.run/createsuperuser.run.xml b/components/entitiy_ident/.run/createsuperuser.run.xml
deleted file mode 100644
index 5fc8ae4..0000000
--- a/components/entitiy_ident/.run/createsuperuser.run.xml
+++ /dev/null
@@ -1,24 +0,0 @@
-<component name="ProjectRunConfigurationManager">
-  <configuration default="false" name="createsuperuser" type="PythonConfigurationType" factoryName="Python">
-    <module name="middleware" />
-    <option name="INTERPRETER_OPTIONS" value="" />
-    <option name="PARENT_ENVS" value="true" />
-    <envs>
-      <env name="PYTHONUNBUFFERED" value="1" />
-    </envs>
-    <option name="SDK_HOME" value="" />
-    <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$" />
-    <option name="IS_MODULE_SDK" value="true" />
-    <option name="ADD_CONTENT_ROOTS" value="true" />
-    <option name="ADD_SOURCE_ROOTS" value="true" />
-    <EXTENSION ID="PythonCoverageRunConfigurationExtension" runner="coverage.py" />
-    <option name="SCRIPT_NAME" value="$PROJECT_DIR$/manage.py" />
-    <option name="PARAMETERS" value="createsuperuser" />
-    <option name="SHOW_COMMAND_LINE" value="false" />
-    <option name="EMULATE_TERMINAL" value="false" />
-    <option name="MODULE_MODE" value="false" />
-    <option name="REDIRECT_INPUT" value="false" />
-    <option name="INPUT_FILE" value="" />
-    <method v="2" />
-  </configuration>
-</component>
\ No newline at end of file
diff --git a/components/entitiy_ident/.run/makemigrations.run.xml b/components/entitiy_ident/.run/makemigrations.run.xml
deleted file mode 100644
index b341723..0000000
--- a/components/entitiy_ident/.run/makemigrations.run.xml
+++ /dev/null
@@ -1,24 +0,0 @@
-<component name="ProjectRunConfigurationManager">
-  <configuration default="false" name="makemigrations" type="PythonConfigurationType" factoryName="Python">
-    <module name="middleware" />
-    <option name="INTERPRETER_OPTIONS" value="" />
-    <option name="PARENT_ENVS" value="true" />
-    <envs>
-      <env name="PYTHONUNBUFFERED" value="1" />
-    </envs>
-    <option name="SDK_HOME" value="" />
-    <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$" />
-    <option name="IS_MODULE_SDK" value="true" />
-    <option name="ADD_CONTENT_ROOTS" value="true" />
-    <option name="ADD_SOURCE_ROOTS" value="true" />
-    <EXTENSION ID="PythonCoverageRunConfigurationExtension" runner="coverage.py" />
-    <option name="SCRIPT_NAME" value="$PROJECT_DIR$/manage.py" />
-    <option name="PARAMETERS" value="makemigrations app_be" />
-    <option name="SHOW_COMMAND_LINE" value="false" />
-    <option name="EMULATE_TERMINAL" value="false" />
-    <option name="MODULE_MODE" value="false" />
-    <option name="REDIRECT_INPUT" value="false" />
-    <option name="INPUT_FILE" value="" />
-    <method v="2" />
-  </configuration>
-</component>
\ No newline at end of file
diff --git a/components/entitiy_ident/.run/migrate.run.xml b/components/entitiy_ident/.run/migrate.run.xml
deleted file mode 100644
index 268a119..0000000
--- a/components/entitiy_ident/.run/migrate.run.xml
+++ /dev/null
@@ -1,24 +0,0 @@
-<component name="ProjectRunConfigurationManager">
-  <configuration default="false" name="migrate" type="PythonConfigurationType" factoryName="Python">
-    <module name="middleware" />
-    <option name="INTERPRETER_OPTIONS" value="" />
-    <option name="PARENT_ENVS" value="true" />
-    <envs>
-      <env name="PYTHONUNBUFFERED" value="1" />
-    </envs>
-    <option name="SDK_HOME" value="" />
-    <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$" />
-    <option name="IS_MODULE_SDK" value="true" />
-    <option name="ADD_CONTENT_ROOTS" value="true" />
-    <option name="ADD_SOURCE_ROOTS" value="true" />
-    <EXTENSION ID="PythonCoverageRunConfigurationExtension" runner="coverage.py" />
-    <option name="SCRIPT_NAME" value="$PROJECT_DIR$/manage.py" />
-    <option name="PARAMETERS" value="migrate" />
-    <option name="SHOW_COMMAND_LINE" value="false" />
-    <option name="EMULATE_TERMINAL" value="false" />
-    <option name="MODULE_MODE" value="false" />
-    <option name="REDIRECT_INPUT" value="false" />
-    <option name="INPUT_FILE" value="" />
-    <method v="2" />
-  </configuration>
-</component>
\ No newline at end of file
diff --git a/components/entitiy_ident/.run/runserver.run.xml b/components/entitiy_ident/.run/runserver.run.xml
deleted file mode 100644
index 3f7b118..0000000
--- a/components/entitiy_ident/.run/runserver.run.xml
+++ /dev/null
@@ -1,24 +0,0 @@
-<component name="ProjectRunConfigurationManager">
-  <configuration default="false" name="runserver" type="PythonConfigurationType" factoryName="Python">
-    <module name="middleware" />
-    <option name="INTERPRETER_OPTIONS" value="" />
-    <option name="PARENT_ENVS" value="true" />
-    <envs>
-      <env name="PYTHONUNBUFFERED" value="1" />
-    </envs>
-    <option name="SDK_HOME" value="" />
-    <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$" />
-    <option name="IS_MODULE_SDK" value="true" />
-    <option name="ADD_CONTENT_ROOTS" value="true" />
-    <option name="ADD_SOURCE_ROOTS" value="true" />
-    <EXTENSION ID="PythonCoverageRunConfigurationExtension" runner="coverage.py" />
-    <option name="SCRIPT_NAME" value="$PROJECT_DIR$/manage.py" />
-    <option name="PARAMETERS" value="runserver" />
-    <option name="SHOW_COMMAND_LINE" value="false" />
-    <option name="EMULATE_TERMINAL" value="false" />
-    <option name="MODULE_MODE" value="false" />
-    <option name="REDIRECT_INPUT" value="false" />
-    <option name="INPUT_FILE" value="" />
-    <method v="2" />
-  </configuration>
-</component>
\ No newline at end of file
diff --git a/msg_broker_rabbit_mq_example/exampleReceiver.py b/msg_broker_rabbit_mq_example/exampleReceiver.py
index 52a1328..5f8e7ea 100644
--- a/msg_broker_rabbit_mq_example/exampleReceiver.py
+++ b/msg_broker_rabbit_mq_example/exampleReceiver.py
@@ -1,28 +1,26 @@
-import pika, sys, os
+import pika
 
-# see https://www.rabbitmq.com/tutorials/tutorial-one-python.html
+# see https://www.rabbitmq.com/tutorials/tutorial-three-python.html
 
-def main():
-    connection = pika.BlockingConnection(pika.ConnectionParameters(host='localhost'))
-    channel = connection.channel()
+connection = pika.BlockingConnection(
+    pika.ConnectionParameters(host='localhost'))
+channel = connection.channel()
 
-    channel.queue_declare(queue='hello')
+channel.exchange_declare(exchange='logs', exchange_type='fanout')
 
-    def callback(ch, method, properties, body):
-        print(" [x] Received %r" % body)
+result = channel.queue_declare(queue='', exclusive=True)
+queue_name = result.method.queue
 
-    channel.basic_consume(queue='hello', on_message_callback=callback, auto_ack=True)
+channel.queue_bind(exchange='logs', queue=queue_name)
 
-    print(' [*] Waiting for messages. To exit press CTRL+C')
-    channel.start_consuming()
+print(' [*] Waiting for logs. To exit press CTRL+C')
 
 
-if __name__ == '__main__':
-    try:
-        main()
-    except KeyboardInterrupt:
-        print('Interrupted')
-        try:
-            sys.exit(0)
-        except SystemExit:
-            os._exit(0)
+def callback(ch, method, properties, body):
+    print(" [x] %r" % body)
+
+
+channel.basic_consume(
+    queue=queue_name, on_message_callback=callback, auto_ack=True)
+
+channel.start_consuming()
diff --git a/msg_broker_rabbit_mq_example/exampleSender.py b/msg_broker_rabbit_mq_example/exampleSender.py
index fee4de4..cad6470 100644
--- a/msg_broker_rabbit_mq_example/exampleSender.py
+++ b/msg_broker_rabbit_mq_example/exampleSender.py
@@ -1,13 +1,15 @@
 import pika
+import sys
 
-# see https://www.rabbitmq.com/tutorials/tutorial-one-python.html
+# see https://www.rabbitmq.com/tutorials/tutorial-three-python.html
 
 connection = pika.BlockingConnection(
     pika.ConnectionParameters(host='localhost'))
 channel = connection.channel()
 
-channel.queue_declare(queue='hello')
+channel.exchange_declare(exchange='logs', exchange_type='fanout')
 
-channel.basic_publish(exchange='', routing_key='hello', body=b'Hello World!')
-print(" [x] Sent 'Hello World!'")
+message = ' '.join(sys.argv[1:]) or b"info: Hello World!"
+channel.basic_publish(exchange='logs', routing_key='', body=message)
+print(" [x] Sent %r" % message)
 connection.close()