Developer Interface¶
This documentation covers the public interfaces fedmsg provides. Unless otherwise noted, all documented interfaces follow Semantic Versioning 2.0.0. If the interface you depend on is not documented here, it may change without warning in a minor release.
Python¶
Sending and Receiving Messages¶
Configuration¶
For the list of configuration options, see the Configuration documentation.
Cryptography and Message Signing¶
“Natural Language” Representation of Messages¶
Replay¶
The fedmsg Protocol¶
fedmsg uses ZeroMQ Publish-Subscribe (PUBSUB) sockets for the messages sent by
fedmsg.publish() and the messages received by fedmsg.tail_messages()
or by way of the Moksha Hub-Consumer approach.
Warning
The message format described below is not part of the public API at this time.
The published ZeroMQ message consists of a multi-part message of exactly two frames, formatted on the wire as follows:
- Frame 0: The message topic against which subscribers will perform a binary comparison.
- Frame 1: The JSON-serialized, UTF-8 encoded message.
