Retcon is a small system to retcon structured documents between two or more data sources. The goal is to de-couple systems which operate on the same data: each can maintain it's own copy of the data and rely on retcon to propagate any changes.
While retcon can propagate non-conflicting changes automatically, most conflicting changes will need to be resolve by a human being.
Retcon also exposes a small network API allowing other tools and humans to post change notifications, resolve conflicts, etc.
This package produces three executables:
- retcond: long-running server that receives notifications and issues updates to entity sources as required.
- retcon-client: send a notification to a retcond.
- retcon-oneshot: useful for testing and debugging, perform a retcon update without going through the rigmarole of setting up a retcond and then issuing a requests with retcon-client.
You will require zeromq and libpq installed.
You can build retcon with standard Haskell tools:
Building retcon with [cabal][] is straightforward:
cabal configure
cabal build
cabal install
Building retcon with [stack][] is also straightforward:
stack install