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Revise doc API section (#4798)

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## Issue Addressed

Partially #4788 

## Proposed Changes

Remove documentation on `/lighthouse/database/reconstruct` API to avoid confusion as the calling the API during historical block download will show an error in the beacon log

Add Events API about `payload_attributes`

## Additional Info

Please provide any additional information. For example, future considerations
or information useful for reviewers.


Co-authored-by: chonghe <44791194+chong-he@users.noreply.github.com>
Co-authored-by: Michael Sproul <micsproul@gmail.com>
This commit is contained in:
chonghe 2023-10-06 04:34:47 +00:00
parent 9769a247b2
commit accb56e4fb
4 changed files with 20 additions and 17 deletions
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16
book/src/api-bn.md
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@ -126,6 +126,22 @@ curl -X GET "http://localhost:5052/eth/v1/beacon/states/head/validators/1" -H "
```
You can replace `1` in the above command with the validator index that you would like to query. Other API query can be done similarly by changing the link according to the Beacon API.
### Events API
The [events API](https://ethereum.github.io/beacon-APIs/#/Events/eventstream) provides information such as the payload attributes that are of interest to block builders and relays. To query the payload attributes, it is necessary to run Lighthouse beacon node with the flag `--always-prepare-payload`. It is also recommended to add the flag `--prepare-payload-lookahead 8000` which configures the payload attributes to be sent at 4s into each slot (or 8s from the start of the next slot). An example of the command is:
```bash
curl -X 'GET' \
'http://localhost:5052/eth/v1/events?topics=payload_attributes' \
-H 'accept: text/event-stream'
```
An example of response is:
```json
data:{"version":"capella","data":{"proposal_slot":"11047","proposer_index":"336057","parent_block_root":"0x26f8999d270dd4677c2a1c815361707157a531f6c599f78fa942c98b545e1799","parent_block_number":"9259","parent_block_hash":"0x7fb788cd7afa814e578afa00a3edd250cdd4c8e35c22badd327d981b5bda33d2","payload_attributes":{"timestamp":"1696034964","prev_randao":"0xeee34d7a3f6b99ade6c6a881046c9c0e96baab2ed9469102d46eb8d6e4fde14c","suggested_fee_recipient":"0x0000000000000000000000000000000000000001","withdrawals":[{"index":"40705","validator_index":"360712","address":"0x73b2e0e54510239e22cc936f0b4a6de1acf0abde","amount":"1202941"},{"index":"40706","validator_index":"360713","address":"0x73b2e0e54510239e22cc936f0b4a6de1acf0abde","amount":"1201138"},{"index":"40707","validator_index":"360714","address":"0x73b2e0e54510239e22cc936f0b4a6de1acf0abde","amount":"1215255"},{"index":"40708","validator_index":"360715","address":"0x73b2e0e54510239e22cc936f0b4a6de1acf0abde","amount":"1161977"},{"index":"40709","validator_index":"360716","address":"0x73b2e0e54510239e22cc936f0b4a6de1acf0abde","amount":"1257278"},{"index":"40710","validator_index":"360717","address":"0x73b2e0e54510239e22cc936f0b4a6de1acf0abde","amount":"1247740"},{"index":"40711","validator_index":"360718","address":"0x73b2e0e54510239e22cc936f0b4a6de1acf0abde","amount":"1204337"},{"index":"40712","validator_index":"360719","address":"0x73b2e0e54510239e22cc936f0b4a6de1acf0abde","amount":"1183575"},{"index":"40713","validator_index":"360720","address":"0x73b2e0e54510239e22cc936f0b4a6de1acf0abde","amount":"1157785"},{"index":"40714","validator_index":"360721","address":"0x73b2e0e54510239e22cc936f0b4a6de1acf0abde","amount":"1143371"},{"index":"40715","validator_index":"360722","address":"0x73b2e0e54510239e22cc936f0b4a6de1acf0abde","amount":"1234787"},{"index":"40716","validator_index":"360723","address":"0x73b2e0e54510239e22cc936f0b4a6de1acf0abde","amount":"1286673"},{"index":"40717","validator_index":"360724","address":"0x73b2e0e54510239e22cc936f0b4a6de1acf0abde","amount":"1419241"},{"index":"40718","validator_index":"360725","address":"0x73b2e0e54510239e22cc936f0b4a6de1acf0abde","amount":"1231015"},{"index":"40719","validator_index":"360726","address":"0x73b2e0e54510239e22cc936f0b4a6de1acf0abde","amount":"1304321"},{"index":"40720","validator_index":"360727","address":"0x73b2e0e54510239e22cc936f0b4a6de1acf0abde","amount":"1236543"}]}}}
```
## Serving the HTTP API over TLS
> **Warning**: This feature is currently experimental.

16
book/src/api-lighthouse.md
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@ -547,22 +547,6 @@ reconstruction has yet to be completed. For more information
on the specific meanings of these fields see the docs on [Checkpoint
Sync](./checkpoint-sync.md#reconstructing-states).
### `/lighthouse/database/reconstruct`
Instruct Lighthouse to begin reconstructing historic states, see
[Reconstructing States](./checkpoint-sync.md#reconstructing-states). This is an alternative
to the `--reconstruct-historic-states` flag.
```
curl -X POST "http://localhost:5052/lighthouse/database/reconstruct" | jq
```
```json
"success"
```
The endpoint will return immediately. See the beacon node logs for an indication of progress.
### `/lighthouse/database/historical_blocks`
Manually provide `SignedBeaconBlock`s to backfill the database. This is intended

3
book/src/builders.md
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@ -258,6 +258,9 @@ used in place of one from the builder:
INFO Reconstructing a full block using a local payload
```
## Information for block builders and relays
Block builders and relays can query beacon node events from the [Events API](https://ethereum.github.io/beacon-APIs/#/Events/eventstream). An example of querying the payload attributes in the Events API is outlined in [Beacon node API - Events API](./api-bn.md#events-api)
[mev-rs]: https://github.com/ralexstokes/mev-rs
[mev-boost]: https://github.com/flashbots/mev-boost
[gas-limit-api]: https://ethereum.github.io/keymanager-APIs/#/Gas%20Limit

2
book/src/validator-inclusion.md
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@ -8,7 +8,7 @@ These endpoints are not stable or included in the Ethereum consensus standard AP
they are subject to change or removal without a change in major release
version.
In order to apply these APIs, you need to have historical states information in the database of your node. This means adding the flag `--reconstruct-historic-states` in the beacon node or using the [/lighthouse/database/reconstruct API](./api-lighthouse.md#lighthousedatabasereconstruct). Once the state reconstruction process is completed, you can apply these APIs to any epoch.
In order to apply these APIs, you need to have historical states information in the database of your node. This means adding the flag `--reconstruct-historic-states` in the beacon node. Once the state reconstruction process is completed, you can apply these APIs to any epoch.
## Endpoints