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Ethereum consensus client in Rust
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Michael Sproul 4763f03dcc Fix bug in database pruning (#1564) 
## Issue Addressed

Closes #1488

## Proposed Changes

* Prevent the pruning algorithm from over-eagerly deleting states at skipped slots when they are shared with the canonical chain.
* Add `debug` logging to the pruning algorithm so we have so better chance of debugging future issues from logs.
* Modify the handling of the "finalized state" in the beacon chain, so that it's always the state at the first slot of the finalized epoch (previously it was the state at the finalized block). This gives database pruning a clearer and cleaner view of things, and will marginally impact the pruning of the op pool, observed proposers, etc (in ways that are safe as far as I can tell).
* Remove duplicated `RevertedFinalizedEpoch` check from `after_finalization`
* Delete useless and unused `max_finality_distance`
* Add tests that exercise pruning with shared states at skip slots
* Delete unnecessary `block_strategy` argument from `add_blocks` and friends in the test harness (will likely conflict with #1380 slightly, sorry @adaszko -- but we can fix that)
* Bonus: add a `BeaconChain::with_head` method. I didn't end up needing it, but it turned out quite nice, so I figured we could keep it?

## Additional Info

Any users who have experienced pruning errors on Medalla will need to resync after upgrading to a release including this change. This should end unbounded `chain_db` growth! 🎉
2020-08-26 00:01:06 +00:00
.github Support multiple BLS implementations (#1335) 2020-07-25 02:03:18 +00:00
account_manager Bump to v0.2.7 (#1561) 2020-08-24 08:25:34 +00:00
beacon_node Fix bug in database pruning (#1564) 2020-08-26 00:01:06 +00:00
book Docs: Fix reference to incorrect password file. (#1556) 2020-08-21 03:50:37 +00:00
boot_node Bump to v0.2.7 (#1561) 2020-08-24 08:25:34 +00:00
common Bump to v0.2.7 (#1561) 2020-08-24 08:25:34 +00:00
consensus Shift HTTP server heavy-lifting to blocking executor (#1518) 2020-08-24 03:06:10 +00:00
crypto Allow import of Prysm keystores (#1535) 2020-08-18 06:28:20 +00:00
hooks Add a flag to make lighthouse portable across machines (#1423) 2020-07-31 05:00:39 +00:00
lcli Bump to v0.2.7 (#1561) 2020-08-24 08:25:34 +00:00
lighthouse Fix order of testnet config load (#1558) 2020-08-25 06:01:42 +00:00
scripts Bump to v0.2.7 (#1561) 2020-08-24 08:25:34 +00:00
testing Add multiaddr support in bootnodes (#1481) 2020-08-17 02:13:26 +00:00
validator_client Bump to v0.2.7 (#1561) 2020-08-24 08:25:34 +00:00
.dockerignore Ensure .git is copied into docker (#1462) 2020-08-05 03:05:36 +00:00
.editorconfig Add editorconfig template 2019-03-11 15:09:57 +11:00
.gitignore Commit Cargo.lock changes, add build scripts (#1521) 2020-08-14 22:24:27 +00:00
.gitmodules Replace EF tests submodule with a makefile 2019-09-08 04:19:54 +10:00
bors.toml Fix bors timeouts (#1341) 2020-07-07 13:44:35 +00:00
Cargo.lock Fix bug in database pruning (#1564) 2020-08-26 00:01:06 +00:00
Cargo.toml Keep track of failed head chains and prevent re-lookups (#1534) 2020-08-18 03:54:09 +00:00
CONTRIBUTING.md Update CONTRIBUTING.md (#751) 2020-01-03 10:45:53 +11:00
Cross.toml Ensure RUSTFLAGS is passed through on cross compile (#1529) 2020-08-17 10:06:06 +00:00
Dockerfile Add a flag to make lighthouse portable across machines (#1423) 2020-07-31 05:00:39 +00:00
LICENSE Update License to Apache 2.0 2019-04-15 16:47:35 +10:00
Makefile Commit Cargo.lock changes, add build scripts (#1521) 2020-08-14 22:24:27 +00:00
README.md Update README.md (#1455) 2020-08-04 09:19:14 +00:00

README.md

Lighthouse: Ethereum 2.0

An open-source Ethereum 2.0 client, written in Rust and maintained by Sigma Prime.

Build Status Book Status RustDoc Status Chat Badge

Documentation

terminalize

Overview

Lighthouse is:

  • Fully open-source, licensed under Apache 2.0.
  • Security-focused. Fuzzing has begun and security reviews are underway.
  • 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 and private individuals.
  • Actively involved in the specification and security analysis of the emerging Ethereum 2.0 specification.

Like all Ethereum 2.0 clients, Lighthouse is a work-in-progress.

Development Status

Current development overview:

  • Specification v0.12.1 implemented, optimized and passing test vectors.
  • Rust-native libp2p with Gossipsub and Discv5.
  • RESTful JSON API via HTTP server.
  • Events via WebSocket.
  • Metrics via Prometheus.

Roadmap

  • April 2019: Inital single-client testnets.
  • September 2019: Inter-operability with other Ethereum 2.0 clients.
  • Q1 2020: lighthouse-0.1.0 release: All major phase 0 features implemented.
  • Q2 2020: Public, multi-client testnet with user-facing functionality.
  • Q2 2020: Third-party security review.
  • Q3 2020: Additional third-party security reviews.
  • Q3 2020: Long-lived, multi-client Beacon Chain testnet
  • Q4 2020: Production Beacon Chain (tentative).

Documentation

The Lighthouse Book contains information for testnet users and developers.

Code documentation is generated via cargo doc and hosted at lighthouse-docs.sigmaprime.io.

If you'd like some background on Sigma Prime, please see the Lighthouse Update #00 blog post or sigmaprime.io.

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. Alternatively, you may use the sigp/lighthouse gitter.

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).