Commit Graph

8 Commits

Author SHA1 Message Date
Etan Kissling 9f279e2933
cache LC headers and sync committees for bootstrap (#4499)
To allow LC data retention longer than the one for historic states,
introduce persistent DB caches for `current_sync_committee` and
`LightClientHeader` for finalized epoch boundary blocks.
This way, historic `LightClientBootstrap` requests may still be honored
even after pruning. Note that historic `LightClientUpdate` requests are
already answered using fully persisted objects, so don't need changes.

Sync committees and headers are cached on finalization of new data.
For existing data, info is lazily cached on first access.

Co-authored-by: Jacek Sieka <jacek@status.im>
2023-01-27 10:44:57 +01:00
Jacek Sieka ba0496105a
ncli_db: fix readonly properly (#4543)
🐡

Co-authored-by: Etan Kissling <etan@status.im>
2023-01-24 02:52:08 +00:00
tersec aacc8d702d
remove Nim 1.2-compatible `push raise`s and update copyright notice years (#4528) 2023-01-20 14:14:37 +00:00
Etan Kissling 9cceb1b4a0
support `readOnly` backend in LC client/data dbs (#4518)
When accessing DB in `readOnly` mode that does not already have latest
schema, initial writes trigger `attempt to write a readonly database`.
Avoid that by only writing schema when DB is not `readOnly`, and provide
data from legacy tables if such are present.
2023-01-18 03:06:23 +01:00
Etan Kissling fda03548e3
use `ForkedLightClientStore` internally (#4512)
When running `nimbus_light_client`, we persist the latest header from
`LightClientStore.finalized_header` in a database across restarts.
Because the data format is derived from the latest `LightClientStore`,
this could lead to data being persisted in pre-release formats.

To enable us to test later `LightClientStore` versions on devnets,
transition to a `ForkedLightClientStore` internally that is only
migrated to newer forks on-demand (instead of starting at latest).
2023-01-16 16:53:45 +01:00
Etan Kissling 609227559f
LC data fork cleanup (#4506)
Distinguish between those code locations that need to be updated on each
light client data format change, and those others that should generally
be fine, as long as a valid light client object is processed.

The former are tagged with static assert for `LightClientDataFork.high`.

The latter are changed to `lcDataFork > LightClientDataFork.None` to
indicate that they depend only on presence of any valid object.
Also bundled a few minor cleanups and fixes.

Also add `Forky` type for `LightClientStore` and minor fixes / cleanups.
2023-01-14 22:19:50 +01:00
Etan Kissling 2324136552
add `LightClientHeader` wrapper (#4481)
The light client data structures were changed to accommodate additional
fields in future forks (e.g., to also hold execution data).

There is a minor change to the JSON serialization, where the `header`
properties are now nested inside a `LightClientHeader`.
The SSZ serialization remains compatible.

See https://github.com/ethereum/consensus-specs/pull/3190
and https://github.com/ethereum/beacon-APIs/pull/287
2023-01-13 16:46:35 +01:00
Etan Kissling 2e09011d49
persist LC sync progress across restarts (#4371)
Persist the latest finalized header and sync committee across restarts
of `nimbus_light_client` to avoid redoing time-consuming bootstrap step.
2022-11-30 04:45:03 +01:00