Marketmaker cancel bug workaround#485
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kevva
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Aug 29, 2018
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Extends #484. Just targeting the #484 branch for now so you can easily see what's changed in the diff/commits. If we decide to merge this it should be merged into master after #484. Even if #484 isn't merged, this will still likely be useful for #481.
This ignores cancel events sent over the socket by mm if the swap is in progress. An in-progress swap can't be cancelled, they are sent in error by mm. Relevent bug (jl777/SuperNET#956).
I have done some testing and this appears to be working for me. I made the following swap which caused mm to incorrectly send failed events:
https://gist.github.com/lukechilds/b348cd594fab918c2bdd13b7e002ac5e
The changes I've made to the swap object formatting logic ignored the cancel events in this specific scenario and the UI displayed correctly throughout the entire swap.
This is a bit of a dirty hack but it should be ok until the bug is resolved in mm. I've only done some light testing so would advise testing this a bit more extensively before merging.