v0.27

Upgrade Notes

• This release adds a new feature flag USE_V2_PUBLISH_BLOCK_ENDPOINT to allow the relay to switch over to the v2 endpoint for block publishing on the consensus client. We recommend lighthouse v4.4.1.
• The broadcast mode is configurable via the BROADCAST_MODE environment variable (default is the consensus_and_equivocation mode)

What's Changed

There is some refactoring in preparation for the optimistic v2 submission flow and preparation for the deneb fork in this release.

• Switch to publishBlockV2 endpoint by @avalonche in #492
• Add feature flags for backwards compatibility by @avalonche in #521
• Allow fork epochs to be 0 by @avalonche in #520
• database migration guide by @metachris in #464
• Graceful startup/shutdown + zero-downtime deployments by @metachris in #469
• update docs for zero-downtime deployments by @metachris in #472
• datastore GetGetPayloadResponse logging cleanup by @metachris in #465
• Return instead of using empty bidTrace by @michaelneuder in #467
• [fix] redis.GetBidTrace should return err=redis.Nil on missing item by @metachris in #468
• Clean up deprecated forks and add deneb support by @avalonche in #486
• Rename broadcast validation to broadcast mode and add docs by @avalonche in #506
• Create ssz type: SubmitBlockRequestV2Optimistic by @michaelneuder in #518
• Fix false positive in boolean flag by @alextes in #500
• Update website.html by @freddmannen in #526
• Fix nil pointer on log in builder submission by @avalonche in #529

Refactoring and code cleanup

• refactor(redis): rename tx to pipeliner by @alextes in #499
• [code cleanup] fix handleGetPayload to save every payload once the signature is verified by @michaelneuder in #512
• [code health] Refactor fee recipient check in handleSubmitNewBlock by @michaelneuder in #479
• [code health] refactor payload attrs checks in handleSubmitNewBlock by @michaelneuder in #491
• [code health] refactor slot details checks in handleSubmitNewBlock by @michaelneuder in #494
• [code health] rename cont to ok by @michaelneuder in #497
• [code health] refactor builder entry checks to independent function by @michaelneuder in #498
• [code health] refactor floor bid checks to independent function by @michaelneuder in #513
• [code health] refactor redis update to independent function by @michaelneuder in #514

Dependency Updates

• Bump golang.org/x/text from 0.9.0 to 0.10.0 by @dependabot in #462
• Bump github.com/alicebob/miniredis/v2 from 2.30.3 to 2.30.4 by @dependabot in #474
• Bump github.com/rubenv/sql-migrate from 1.4.0 to 1.5.1 by @dependabot in #473
• Bump golang.org/x/text from 0.10.0 to 0.11.0 by @dependabot in #478
• Bump github.com/holiman/uint256 from 1.2.2 to 1.2.3 by @dependabot in #481
• Bump github.com/rubenv/sql-migrate from 1.5.1 to 1.5.2 by @dependabot in #484
• Bump golang.org/x/text from 0.11.0 to 0.12.0 by @dependabot in #502
• Bump github.com/flashbots/go-utils from 0.4.8 to 0.4.11 by @dependabot in #503
• Bump github.com/alicebob/miniredis/v2 from 2.30.4 to 2.30.5 by @dependabot in #504
• Bump github.com/ethereum/go-ethereum from 1.12.0 to 1.12.2 by @dependabot in #508
• Bump golang.org/x/text from 0.12.0 to 0.13.0 by @dependabot in #515
• Bump github.com/flashbots/go-utils from 0.4.11 to 0.4.12 by @dependabot in #523

New Contributors

• @alextes made their first contribution in #499
• @freddmannen made their first contribution in #526

Full Changelog: v0.26...v0.27
Docker Image: flashbots/mev-boost-relay:0.27