We see evil cloaking our planet like a black cloud. [...] We see the Jedi surrounded by darkness. [...] The darkness comes from within them and then spreads to engulf them. Perhaps our destruction will come from an explosive device sent to destroy an entire planet without a shiver. [...] We see masked soldiers. We do not know who they are, or what they want. Only that they are evil. They will bring fear and suffering.
-- O-Vieve and V-Tan, in Jedi Apprentice: The Fight for Truth
kegan monitors a changing structured value and tells you how it changes,
producing an immutable log of events, modeled as fact assertions and
retractions. This lets you tie mutable data to a system that expects immutable
data. That immutable data can go into a log manager, or a database like a la
Datalog like Datomic and Datascript that
lets you query not just the current state, but also the evolution of that
state efficiently. It supports arbitrarily nested and structured data
automatically by inspecting its structure, with no code to write.
For example, if you want to monitor a JSON REST API (push or pull) and log
changes to a log processor or dump them into Datascript to see
how it changed, kegan is for you.
kegan is named after Kegan, a planet in the Star Wars
universe where citizens' moves are meticulously watched and noted.
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Distributed under the Eclipse Public License either version 1.0 or (at your option) any later version.