fedmsg (Fedora-Messaging) is a Python package and API used around Fedora Infrastructure to send and receive messages to and from applications.

Quick setup from here:

1. install yourself fedmsg-relay package
2. add to endpoint:

   /etc/fedmsg.d/endpoints.py

           "__main__.HOSTNAME": [
               "tcp://127.0.0.1:4320",
           ]

   the HOSTNAME is your local host name, see hostname(1)

3. start fedmsg-relay service.
4. tail the relay messages: fedmsg-tail --really-pretty &
5. issue a message: echo "Hello, world" | fedmsg-logger

To have endpoint where to listen all messages, need fedmsg-gateway daemon.

Install fedmsg-gateway package, no configuration needed.

Now you can define in your endpoints.py to listen for pld messages:

endpoints.py

        "pld-relay": [
            "tcp://ep09.pld-linux.org:9940",
        ], 

anitya is a cross-distribution upstream release monitoring project, under https://release-monitoring.org address.

To monitor their events via fedmsg:

• install fedmsg package:

  $ poldek -u fedmsg

• configure anitya bus:

  ~/.fedmsg.d/anitya.py

  # anitya endpoint definition: https://release-monitoring.org/fedmsg
  config = dict(
      # This is a dict of possible addresses from which fedmsg can send
      # messages.  fedmsg.init(...) requires that a 'name' argument be passed
      # to it which corresponds with one of the keys in this dict.
      endpoints={
          "anitya-public-relay": [
              "tcp://release-monitoring.org:9940",
          ],
      },
  )

• tail the changes!

  $ fedmsg-tail --really-pretty