Add new command line option to indicate what version of snapshot nodeos will produce

[matthewdarwin]

Add new command line option to indicate what version of snapshot nodeos will produce

eg:

nodeos --print-snapshot-version

This will allow automation to know which snapshots to use for production.

[bhazzard]

"know which snapshots to use for production"

Wouldn't that suggest it would be more helpful to know information about the snapshots you have, rather than the snapshot a nodeos instance would produce?

An alternative to this we discussed was adding a tool to leaputil to extract and display useful information about a snapshot like snapshot version, chain id, block height / block id, etc... would that solve your automation use case?

[matthewdarwin]

I already know which snapshots I have, they are in s3 bucket which is used to display here: https://snapshots.eosnation.io/

When we need to run a process where nodeos needs a snapshot typically we take the one available for the version of nodeos that is running. To understand what version that is, we create a file (as part of the build process for nodeos) which records which version to prefer. This file is created manually. Would be cool if we could avoid creating this file all together and just ask nodeos what version of snapshot it would like to use.