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New Notice Producers

The following steps guide new instrument, mission, or observatory producers into setting up new notices streams that are distributed to the user community via Kafka. This process requires interaction with the GCN Team to enable accounts and Kafka topics creation on the GCN Kafka broker. The GCN Team is also happy to work with the mission teams to help construct your alerts.

Start Producing Alerts

  1. Sign in / Sign up

    Decide which of your team members will have programmatic access to produce your alerts. Make sure that they have all signed in at least once to the GCN website and the GCN test website.

  2. Name Your Kafka Topics

    Names of Kafka topics follow the format gcn.notices.mission.notice_type. Pick a prefix for your Kafka topic names, mission.*.

  3. Contact the GCN Team

    Send the GCN Team your list of team members from Step 1 and your chosen Kafka topic prefix from Step 2. The GCN Team will reply after they have configured producer permissions for your team.

  4. Build Producer Code

    • Log out and log back in.
    • Go through the Start Streaming GCN Notices process.
    • On Step 2, choose the scope
    • Your producer code will look very similar to the client example code and Step 4 of Start Streaming GCN Notices. client_id and client_secret can be found in Step 4 client example code.
    • Start from this and adjust the client_id, client_secret, topic and data content:
    from gcn_kafka import Producer
    # Connect as a producer.
    # Warning: don't share the client secret with others.
    producer = Producer(client_id='fill me in', client_secret='fill me in')
    # any topic starting with 'mission.'
    topic = 'gcn.notices.mission.example'
    data = b'...'  # any bytes
    producer.produce(topic, data)
  5. Create or Update the Mission Page

    Create a new mission page by submitting a pull request or by sending text to the GCN Team.

  6. Announce New Notice Types

    Work with the GCN Team to draft a community announcement, which the GCN Team will circulate.

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