We received a bug report of a node restarting custody backfill unnecessarily after upgrading to Lighthouse v8.1.1. What happened is:
- User started LH v8.0.1 many months ago, CGC updated 0 -> N but the CGC was not eagerly persisted.
- LH experienced an unclean shutdown (not sure of what type).
- Upon restarting (still running v8.0.1), the custody context read from disk contains CGC=0: `DEBUG Loaded persisted custody context custody_context: CustodyContext { validator_custody_count: 0, ...`).
- CGC updates again to N, retriggering custody backfill: `DEBUG Validator count at head updated old_count: 0, new_count: N`.
- Custody backfill does a bunch of downloading for no gain: `DEBUG Imported historical data columns epoch: Epoch(428433), total_imported: 0`
- While custody backfill is running user updated to v8.1.1, and we see logs for the CGC=N being peristed upon clean shutdown, and then correctly read on startup with v8.1.1.
- Custody backfill keeps running and downloading due to the CGC change still being considered in progress.
- Call `persist_custody_context` inside the `register_validators` handler so that it is written to disk eagerly whenever it changes. The performance impact of this should be minimal as the amount of data is very small and this call can only happen at most ~128 times (once for each change) in the entire life of a beacon node.
- Call `persist_custody_context` inside `BeaconChainBuilder::build` so that changes caused by CLI flags are persisted (otherwise starting a node with `--semi-supernode` and no validators, then shutting it down uncleanly would cause use to forget the CGC).
These changes greatly reduce the timespan during which an unclean shutdown can create inconsistency. In the worst case, we only lose backfill progress that runs concurrently with the `register_validators` handler (should be extremely minimal, nigh impossible).
Co-Authored-By: Michael Sproul <michael@sigmaprime.io>
The flow for local block building is
1. Create execution payload and bid
2. Construct beacon block
3. Sign beacon block and publish
4. Sign execution payload and publish
This PR adds the beacon block v4 flow , GET payload envelope and POST payload envelope (local block building only). The spec for these endpoints can be found here: https://github.com/ethereum/beacon-APIs/pull/552 and is subject to change.
We needed a way to store the unsigned execution payload envelope associated to the execution payload bid that was included in the block. I introduced a new cache that stores these unsigned execution payload envelopes. the GET payload envelope queries this cache directly so that a proposer, after publishing a block, can fetch the payload envelope + sign and publish it.
I kept payload signing and publishing within the validators block service to keep things simple for now. The idea was to build out a block production MVP for devnet 0, try not to affect any non gloas code paths and build things out in such a way that it will be easy to deprecate pre-gloas code paths later on (for example block production v2 and v3).
We will eventually need to track which beacon node was queried for the block so that we can later query it for the payload. But thats not needed for the devnet.
Co-Authored-By: Eitan Seri- Levi <eserilev@gmail.com>
Co-Authored-By: Michael Sproul <michael@sigmaprime.io>
Co-Authored-By: Jimmy Chen <jchen.tc@gmail.com>
Co-Authored-By: Eitan Seri-Levi <eserilev@ucsc.edu>
This reverts some of the changes from #8524 by adding back the typed network endpoints with an optional `network` feature. Without the `network` feature, these endpoints (and associated dependencies) will not be built.
This means the `enr`, `multiaddr` and `libp2p-identity` dependencies have returned but are now optional
Co-Authored-By: Mac L <mjladson@pm.me>
Removes the remaining facade re-exports from `consensus/types`.
I have left `graffiti` as I think it has some utility so am leaning towards keeping it in the final API design.
Co-Authored-By: Mac L <mjladson@pm.me>
Removes some of the temporary re-exports in `consensus/types`.
I am doing this in multiple parts to keep each diff small.
Co-Authored-By: Mac L <mjladson@pm.me>
Closes#8569
Updates the HTTP API error when the node cannot reconstruct blobs due to "Insufficient data columns".
Changes the response from 500 Internal Server Error to 400 Bad Request and adds a hint to run with --supernode or --semi-supernode.
Co-Authored-By: Andrurachi <andruvrch@gmail.com>
