cerc-io/lighthouse
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Make /config/spec backwards compat for VC (#2934)

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## Proposed Changes

Restore compatibility with beacon nodes using the `MERGE` naming by:

1. Adding defaults for the Bellatrix `Config` fields
2. Not attempting to read (or serve) the Bellatrix preset on `/config/spec`.

I've confirmed that this works with Infura, and just logs a warning:

```
Jan 20 10:51:31.078 INFO Connected to beacon node                endpoint: https://eth2-beacon-mainnet.infura.io/, version: teku/v22.1.0/linux-x86_64/-eclipseadoptium-openjdk64bitservervm-java-17
Jan 20 10:51:31.344 WARN Beacon node config does not match exactly, advice: check that the BN is updated and configured for any upcoming forks, endpoint: https://eth2-beacon-mainnet.infura.io/
Jan 20 10:51:31.344 INFO Initialized beacon node connections     available: 1, total: 1
```
This commit is contained in:
Michael Sproul 2022-01-20 01:31:53 +00:00
parent ef7351ddfe
commit 95b3183cb4
2 changed files with 18 additions and 5 deletions
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13
consensus/types/src/chain_spec.rs
View File

@ -631,8 +631,12 @@ pub struct Config {
#[serde(deserialize_with = "deserialize_fork_epoch")]
pub altair_fork_epoch: Option<MaybeQuoted<Epoch>>,
// TODO(merge): remove this default
#[serde(default = "default_bellatrix_fork_version")]
#[serde(with = "eth2_serde_utils::bytes_4_hex")]
bellatrix_fork_version: [u8; 4],
// TODO(merge): remove this default
#[serde(default = "default_bellatrix_fork_epoch")]
#[serde(serialize_with = "serialize_fork_epoch")]
#[serde(deserialize_with = "deserialize_fork_epoch")]
pub bellatrix_fork_epoch: Option<MaybeQuoted<Epoch>>,
@ -669,6 +673,15 @@ pub struct Config {
deposit_contract_address: Address,
}
fn default_bellatrix_fork_version() -> [u8; 4] {
// This value shouldn't be used.
[0xff, 0xff, 0xff, 0xff]
}
fn default_bellatrix_fork_epoch() -> Option<MaybeQuoted<Epoch>> {
None
}
impl Default for Config {
fn default() -> Self {
let chain_spec = MainnetEthSpec::default_spec();

10
consensus/types/src/config_and_preset.rs
View File

@ -14,9 +14,9 @@ pub struct ConfigAndPreset {
pub base_preset: BasePreset,
#[serde(flatten)]
pub altair_preset: AltairPreset,
#[serde(flatten)]
pub bellatrix_preset: BellatrixPreset,
// TODO(merge): re-enable
// #[serde(flatten)]
// pub bellatrix_preset: BellatrixPreset,
/// The `extra_fields` map allows us to gracefully decode fields intended for future hard forks.
#[serde(flatten)]
pub extra_fields: HashMap<String, String>,
@ -27,14 +27,14 @@ impl ConfigAndPreset {
let config = Config::from_chain_spec::<T>(spec);
let base_preset = BasePreset::from_chain_spec::<T>(spec);
let altair_preset = AltairPreset::from_chain_spec::<T>(spec);
let bellatrix_preset = BellatrixPreset::from_chain_spec::<T>(spec);
// TODO(merge): re-enable
let _bellatrix_preset = BellatrixPreset::from_chain_spec::<T>(spec);
let extra_fields = HashMap::new();
Self {
config,
base_preset,
altair_preset,
bellatrix_preset,
extra_fields,
}
}