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Ethereum consensus client in Rust
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Michael Sproul 47d57a290b Improve eth1 block cache sync (for Ropsten) (#3234) 
## Issue Addressed

Fix for the eth1 cache sync issue observed on Ropsten.

## Proposed Changes

Ropsten blocks are so infrequent that they broke our algorithm for downloading eth1 blocks. We currently try to download forwards from the last block in our cache to the block with block number [`remote_highest_block - FOLLOW_DISTANCE + FOLLOW_DISTANCE / ETH1_BLOCK_TIME_TOLERANCE_FACTOR`](6f732986f1/beacon_node/eth1/src/service.rs (L489-L492)). With the tolerance set to 4 this is insufficient because we lag by 1536 blocks, which is more like ~14 hours on Ropsten. This results in us having an incomplete eth1 cache, because we should cache all blocks between -16h and -8h. Even if we were to set the tolerance to 2 for the largest allowance, we would only look back 1024 blocks which is still more than 8 hours.

For example consider this block https://ropsten.etherscan.io/block/12321390. The block from 1536 blocks earlier is 14 hours and 20 minutes before it: https://ropsten.etherscan.io/block/12319854. The block from 1024 blocks earlier is https://ropsten.etherscan.io/block/12320366, 8 hours and 48 minutes before.

- This PR introduces a new CLI flag called `--eth1-cache-follow-distance` which can be used to set the distance manually.
- A new dynamic catchup mechanism is added which detects when the cache is lagging the true eth1 chain and tries to download more blocks within the follow distance in order to catch up.
2022-06-03 06:05:03 +00:00
.github Fix Rust 1.61 clippy lints (#3192) 2022-05-20 05:02:13 +00:00
account_manager Improve slashing import log (#3122) 2022-03-28 07:14:16 +00:00
beacon_node Improve eth1 block cache sync (for Ropsten) (#3234) 2022-06-03 06:05:03 +00:00
book Fix links in docs (#3219) 2022-05-31 06:09:07 +00:00
boot_node v2.3.0 (#3222) 2022-05-30 01:35:10 +00:00
common v2.3.0 (#3222) 2022-05-30 01:35:10 +00:00
consensus Inline safe_arith methods (#3229) 2022-05-31 06:09:12 +00:00
crypto Update and consolidate dependencies (#3136) 2022-04-04 00:26:16 +00:00
database_manager Conserve disk space by raising default SPRP (#3137) 2022-04-01 07:16:25 +00:00
lcli Use a stable tag for ubuntu in dockerfile (#3231) 2022-05-31 06:09:12 +00:00
lighthouse Improve eth1 block cache sync (for Ropsten) (#3234) 2022-06-03 06:05:03 +00:00
scripts Updates to tests and local testnet for Ganache 7 (#3056) 2022-03-20 22:48:14 +00:00
slasher Update and consolidate dependencies (#3136) 2022-04-04 00:26:16 +00:00
testing Switch Nethermind integration tests to use master branch (#3228) 2022-06-03 03:22:55 +00:00
validator_client Add new VC metrics for beacon node availability (#3193) 2022-05-26 02:05:16 +00:00
.dockerignore Exclude EE build dirs from Docker context (#3174) 2022-05-09 23:43:31 +00:00
.editorconfig Add editorconfig template 2019-03-11 15:09:57 +11:00
.gitignore Delete uncompressed genesis states (#2092) 2020-12-16 03:44:05 +00:00
.gitmodules Replace EF tests submodule with a makefile 2019-09-08 04:19:54 +10:00
bors.toml Add minimum supported Rust version (#3082) 2022-03-17 03:33:29 +00:00
Cargo.lock v2.3.0 (#3222) 2022-05-30 01:35:10 +00:00
Cargo.toml Update and consolidate dependencies (#3136) 2022-04-04 00:26:16 +00:00
CONTRIBUTING.md Update CONTRIBUTING.md (#751) 2020-01-03 10:45:53 +11:00
Cross.toml Optimise slasher DB layout and switch to MDBX (#2776) 2021-12-21 08:23:17 +00:00
Dockerfile Use a stable tag for ubuntu in dockerfile (#3231) 2022-05-31 06:09:12 +00:00
Dockerfile.cross Use a stable tag for ubuntu in dockerfile (#3231) 2022-05-31 06:09:12 +00:00
LICENSE Update License to Apache 2.0 2019-04-15 16:47:35 +10:00
Makefile cargo audit updates (#3063) 2022-03-08 19:48:12 +00:00
README.md Remove build status badge from README (#3195) 2022-05-20 05:02:14 +00:00
SECURITY.md Add how users should report security vulnerabilities for this repository (#2562) 2021-09-07 01:54:05 +00:00

README.md

Lighthouse: Ethereum consensus client

An open-source Ethereum consensus client, written in Rust and maintained by Sigma Prime.

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Overview

Lighthouse is:

  • Ready for use on Ethereum consensus mainnet.
  • Fully open-source, licensed under Apache 2.0.
  • Security-focused. Fuzzing techniques have been continuously applied and several external security reviews have been performed.
  • Built in Rust, a modern language providing unique safety guarantees and excellent performance (comparable to C++).
  • Funded by various organisations, including Sigma Prime, the Ethereum Foundation, ConsenSys, the Decentralization Foundation and private individuals.
  • Actively involved in the specification and security analysis of the Ethereum proof-of-stake consensus specification.

Staking Deposit Contract

The Lighthouse team acknowledges 0x00000000219ab540356cBB839Cbe05303d7705Fa as the canonical staking deposit contract address.

Documentation

The Lighthouse Book contains information for users and developers.

The Lighthouse team maintains a blog at lighthouse-blog.sigmaprime.io which contains periodical progress updates, roadmap insights and interesting findings.

Branches

Lighthouse maintains two permanent branches:

  • stable: Always points to the latest stable release.
    • This is ideal for most users.
  • unstable: Used for development, contains the latest PRs.
    • Developers should base their PRs on this branch.

Contributing

Lighthouse welcomes contributors.

If you are looking to contribute, please head to the Contributing section of the Lighthouse book.

Contact

The best place for discussion is the Lighthouse Discord server.

Sign up to the Lighthouse Development Updates mailing list for email notifications about releases, network status and other important information.

Encrypt sensitive messages using our PGP key.

Donations

Lighthouse is an open-source project and a public good. Funding public goods is hard and we're grateful for the donations we receive from the community via:

  • Gitcoin Grants.
  • Ethereum address: 0x25c4a76E7d118705e7Ea2e9b7d8C59930d8aCD3b (donation.sigmaprime.eth).