Plutip - CannotFindTimeInEraSummaries

[codybutz]

Hello!

I am experiencing an error when trying to balance a TX against the Plutip environment that has a UpperBound on the validity range.

Error: (CannotConvertPOSIXTimeRange (Interval { from: (LowerBound NegInf true), to: (UpperBound (Finite (POSIXTime (fromString "1663706074400"))) true) }) (CannotFindTimeInEraSummaries (AbsTime (fromString "190400"))))

You can find an example of the code here: https://github.com/codybutz/ctl-examples/tree/plutip-posix-time-error and can be tested with: nix build .#checks.x86_64-linux.ctl-scaffold-plutip-test -L

I'm unsure honestly at the root cause of this error, however I have a slight feeling it has something to do with the faster slots being used by in the Plutip environment.

[klntsky]

Thanks for reporting!
This is a problem with Plutip we are aware of.

[klntsky]

The root cause is that eraSummaries are ill-formed.

[klntsky]

Update:
They are no more ill-formed, they just span too short into the future. It's possible to change PlutipConfig's slotLength now

[KristianBalaj]

@klntsky
Just to refresh this issue on current master, we're still experiencing that error.
However, we have a workaround - setting the epochSize here

cardano-transaction-lib/src/Internal/Plutip/Server.purs

Line 410 in 205f25b

, epochSize

The default value seems to be 80 seconds, when we override it with 432000 (same as mainnet, the problem goes away).

[klntsky]

Setting epochSize is a valid fix for this problem.