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<!-- Thanks for sending a PR! Before submitting: 1. If this is your first PR, check out our contribution guide here https://docs.prylabs.network/docs/contribute/contribution-guidelines You will then need to sign our Contributor License Agreement (CLA), which will show up as a comment from a bot in this pull request after you open it. We cannot review code without a signed CLA. 2. Please file an associated tracking issue if this pull request is non-trivial and requires context for our team to understand. All features and most bug fixes should have an associated issue with a design discussed and decided upon. Small bug fixes and documentation improvements don't need issues. 3. New features and bug fixes must have tests. Documentation may need to be updated. If you're unsure what to update, send the PR, and we'll discuss in review. 4. Note that PRs updating dependencies and new Go versions are not accepted. Please file an issue instead. 5. A changelog entry is required for user facing issues. --> **What type of PR is this?** Bug fix **What does this PR do? Why is it needed?** s.Stater.StateBySlot may replay if it's the current epoch as it's for values in the db, if we are in the current we should try to get head slot and use the cache, proposer duties was doing this already but the other 2 duties endpoints was not. this pr aligns all 3 and introduces a new `statebyepoch` that just wraps the approach. I tested by running this kurtosis config with and without the fix to see that the replays stop, the blockchain progresses, and the upgraded to fulu is not printed multiple times ``` participants: # Super-nodes - el_type: nethermind cl_type: prysm cl_image: gcr.io/offchainlabs/prysm/beacon-chain:latest count: 2 supernode: true cl_extra_params: - --subscribe-all-subnets - --verbosity=debug vc_extra_params: - --enable-beacon-rest-api - --verbosity=debug # Full-nodes - el_type: nethermind cl_type: prysm cl_image: gcr.io/offchainlabs/prysm/beacon-chain:latest validator_count: 63 cl_extra_params: - --verbosity=debug vc_extra_params: - --enable-beacon-rest-api - --verbosity=debug - el_type: nethermind cl_type: prysm cl_image: gcr.io/offchainlabs/prysm/beacon-chain:latest cl_extra_params: - --verbosity=debug vc_extra_params: - --enable-beacon-rest-api - --verbosity=debug validator_count: 13 additional_services: - dora - spamoor spamoor_params: image: ethpandaops/spamoor:master max_mem: 4000 spammers: - scenario: eoatx config: throughput: 200 - scenario: blobs config: throughput: 20 network_params: fulu_fork_epoch: 2 bpo_1_epoch: 8 bpo_1_max_blobs: 21 withdrawal_type: "0x02" preset: mainnet seconds_per_slot: 6 global_log_level: debug ``` **Which issues(s) does this PR fix?** Fixes # https://github.com/OffchainLabs/prysm/issues/16135 **Other notes for review** **Acknowledgements** - [x] I have read [CONTRIBUTING.md](https://github.com/prysmaticlabs/prysm/blob/develop/CONTRIBUTING.md). - [x] I have included a uniquely named [changelog fragment file](https://github.com/prysmaticlabs/prysm/blob/develop/CONTRIBUTING.md#maintaining-changelogmd). - [x] I have added a description with sufficient context for reviewers to understand this PR. - [x] I have tested that my changes work as expected and I added a testing plan to the PR description (if applicable).
Prysmatic Labs Beacon Chain Implementation
This is the main project folder for the beacon chain implementation of Ethereum written in Go by Prysmatic Labs.
You can also read our main README and join our active chat room on Discord.
Also, read the official beacon chain specification, this design spec serves as a source of truth for the beacon chain implementation we follow at Prysmatic Labs.