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Serve Bellatrix preset in BN API (#3425)

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## Issue Addressed

Resolves #3388
Resolves #2638

## Proposed Changes

- Return the `BellatrixPreset` on `/eth/v1/config/spec` by default.
- Allow users to opt out of this by providing `--http-spec-fork=altair` (unless there's a Bellatrix fork epoch set).
- Add the Altair constants from #2638 and make serving the constants non-optional (the `http-disable-legacy-spec` flag is deprecated).
- Modify the VC to only read the `Config` and not to log extra fields. This prevents it from having to muck around parsing the `ConfigAndPreset` fields it doesn't need.

## Additional Info

This change is backwards-compatible for the VC and the BN, but is marked as a breaking change for the removal of `--http-disable-legacy-spec`.

I tried making `Config` a `superstruct` too, but getting the automatic decoding to work was a huge pain and was going to require a lot of hacks, so I gave up in favour of keeping the default-based approach we have now.
This commit is contained in:
Michael Sproul
2022-08-10 07:52:59 +00:00
parent c25934956b
commit 4e05f19fb5
19 changed files with 167 additions and 142 deletions
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@@ -7073,6 +7073,7 @@ dependencies = [
"itertools",
"lazy_static",
"log",
"maplit",
"parking_lot 0.12.1",
"rand 0.8.5",
"rand_xorshift",