## Issue Addressed
Downgrade inconsistent chain segment states from `panic` to `crit`. I don't love this solution but since range can always bounce back from any of those, we don't panic.
Co-authored-by: Age Manning <Age@AgeManning.com>
## Issue Addressed
chain state inconsistencies
## Proposed Changes
- a batch can be fake-failed by Range if it needs to move a peer to another chain. The peer will still send blocks/ errors / produce timeouts for those requests, so check when we get a response from the RPC that the request id matches, instead of only the peer, since a re-request can be directed to the same peer.
- if an optimistic batch succeeds, store the attempt to avoid trying it again when quickly switching chains. Also, use it only if ahead of our current target, instead of the segment's start epoch
## Issue Addressed
NA
## Proposed Changes
Uses a `Drop` implementation to help ensure that `BeaconProcessor` workers are freed. This will help prevent against regression, if someone happens to add an early return and it will also help in the case of a panic.
## Additional Info
NA
## Issue Addressed
Downgrade inconsistent chain segment states from `panic` to `crit`. I don't love this solution but since range can always bounce back from any of those, we don't panic.
Co-authored-by: Age Manning <Age@AgeManning.com>
## Issue Addressed
- Resolves#1705
## Proposed Changes
Cleans up some of my TODOs in the code base.
- Adds link to issue in this repo for BLST `unsafe` block.
- Confirms that the `nextaccount` field *is* required on an EIP-2386 wallet.
- Reference: https://github.com/mcdee/EIPs/blob/master/EIPS/eip-2386.md#json-schema
- Removes TODO about Zeroize on bip39 that was resolved in #1701
- Removes a TODO about an early randao reveal since we use the slot clock to generate the reveal: c4bd9c86e6/validator_client/src/block_service.rs (L212-L220)
## Additional Info
NA
## Issue Addressed
chain state inconsistencies
## Proposed Changes
- a batch can be fake-failed by Range if it needs to move a peer to another chain. The peer will still send blocks/ errors / produce timeouts for those requests, so check when we get a response from the RPC that the request id matches, instead of only the peer, since a re-request can be directed to the same peer.
- if an optimistic batch succeeds, store the attempt to avoid trying it again when quickly switching chains. Also, use it only if ahead of our current target, instead of the segment's start epoch
## Issue Addressed
NA
## Proposed Changes
Uses a `Drop` implementation to help ensure that `BeaconProcessor` workers are freed. This will help prevent against regression, if someone happens to add an early return and it will also help in the case of a panic.
## Additional Info
NA
## Issue Addressed
NA
## Proposed Changes
Addresses an interesting DoS vector raised by @protolambda by verifying that the head and target are consistent when processing aggregate attestations. This check prevents us from loading very old target blocks and doing lots of work to skip them to the current slot.
## Additional Info
NA
This commit was modified by Paul H whilst rebasing master onto
v0.3.0-staging
Adding UPnP support will help grow the DHT by allowing NAT traversal for peers with UPnP supported routers.
Using IGD library: https://docs.rs/igd/0.10.0/igd/
Adding the the libp2p tcp port and discovery udp port. If this fails it simply logs the attempt and moves on
Co-authored-by: Age Manning <Age@AgeManning.com>
## Issue Addressed
Fixes#1665.
## Proposed Changes
`lighthouse account_manager wallet create` now generates a 24-word
mnemonic. The user can override this by passing `--mnemonic-length 12`
(or another legal bip39 length).
## Additional Info
CLI `--help`:
```
--mnemonic-length <MNEMONIC_LENGTH> The number of words to use for the mnemonic phrase. [default: 24]
```
In case of an invalid argument:
```
% lighthouse account_manager wallet create --mnemonic-length 25
error: Invalid value for '--mnemonic-length <MNEMONIC_LENGTH>': Mnemonic length must be one of 12, 15, 18, 21, 24
```
## Issue Addressed
Resolves#1130
## Proposed Changes
Use the sigp fork of tiny-bip39, which includes `Zeroize` for `Mnemonic` and `Seed`
## Additional Info
N/A
This commit was edited by Paul H when rebasing from master to
v0.3.0-staging.
Solution 2 proposed here: https://github.com/sigp/lighthouse/issues/1435#issuecomment-692317639
- Adds an optional `--wss-checkpoint` flag that takes a string `root:epoch`
- Verify that the given checkpoint exists in the chain, or that the the chain syncs through this checkpoint. If not, shutdown and prompt the user to purge state before restarting.
Co-authored-by: Paul Hauner <paul@paulhauner.com>
## Issue Addressed
NA
## Proposed Changes
Addresses an interesting DoS vector raised by @protolambda by verifying that the head and target are consistent when processing aggregate attestations. This check prevents us from loading very old target blocks and doing lots of work to skip them to the current slot.
## Additional Info
NA
## Issue Addressed
NA
## Proposed Changes
- Implements a HTTP API for the validator client.
- Creates EIP-2335 keystores with an empty `description` field, instead of a missing `description` field. Adds option to set name.
- Be more graceful with setups without any validators (yet)
- Remove an error log when there are no validators.
- Create the `validator` dir if it doesn't exist.
- Allow building a `ValidatorDir` without a withdrawal keystore (required for the API method where we only post a voting keystore).
- Add optional `description` field to `validator_definitions.yml`
## TODO
- [x] Signature header, as per https://github.com/sigp/lighthouse/issues/1269#issuecomment-649879855
- [x] Return validator descriptions
- [x] Return deposit data
- [x] Respect the mnemonic offset
- [x] Check that mnemonic can derive returned keys
- [x] Be strict about non-localhost
- [x] Allow graceful start without any validators (+ create validator dir)
- [x] Docs final pass
- [x] Swap to EIP-2335 description field.
- [x] Fix Zerioze TODO in VC api types.
- [x] Zeroize secp256k1 key
## Endpoints
- [x] `GET /lighthouse/version`
- [x] `GET /lighthouse/health`
- [x] `GET /lighthouse/validators`
- [x] `POST /lighthouse/validators/hd`
- [x] `POST /lighthouse/validators/keystore`
- [x] `PATCH /lighthouse/validators/:validator_pubkey`
- [ ] ~~`POST /lighthouse/validators/:validator_pubkey/exit/:epoch`~~ Future works
## Additional Info
TBC
Adding UPnP support will help grow the DHT by allowing NAT traversal for peers with UPnP supported routers.
## Issue Addressed
#927
## Proposed Changes
Using IGD library: https://docs.rs/igd/0.10.0/igd/
Adding the the libp2p tcp port and discovery udp port. If this fails it simply logs the attempt and moves on
## Additional Info
Co-authored-by: Age Manning <Age@AgeManning.com>
## Issue Addressed
Fixes#1665.
## Proposed Changes
`lighthouse account_manager wallet create` now generates a 24-word
mnemonic. The user can override this by passing `--mnemonic-length 12`
(or another legal bip39 length).
## Additional Info
CLI `--help`:
```
--mnemonic-length <MNEMONIC_LENGTH> The number of words to use for the mnemonic phrase. [default: 24]
```
In case of an invalid argument:
```
% lighthouse account_manager wallet create --mnemonic-length 25
error: Invalid value for '--mnemonic-length <MNEMONIC_LENGTH>': Mnemonic length must be one of 12, 15, 18, 21, 24
```
## Issue Addressed
Resolves#1130
## Proposed Changes
Use the sigp fork of tiny-bip39, which includes `Zeroize` for `Mnemonic` and `Seed`
## Additional Info
N/A
## Issue Addressed
Implements support for importing and exporting the slashing protection DB interchange format described here:
https://hackmd.io/@sproul/Bk0Y0qdGD
Also closes#1584
## Proposed Changes
* [x] Support for serializing and deserializing the format
* [x] Support for importing and exporting Lighthouse's database
* [x] CLI commands to invoke import and export
* [x] Export to minimal format (required when a minimal format has been previously imported)
* [x] Tests for export to minimal (utilising mixed importing and attestation signing?)
* [x] Tests for import/export of complete format, and import of minimal format
* [x] ~~Prevent attestations with sources less than our max source (Danny's suggestion). Required for the fake attestation that we put in for the minimal format to block attestations from source 0.~~
* [x] Add the concept of a "low watermark" for compatibility with the minimal format
Bonus!
* [x] A fix to a potentially nasty bug involving validators getting re-registered each time the validator client ran! Thankfully, the ordering of keys meant that the validator IDs used for attestations and blocks remained stable -- otherwise we could have had some slashings on our hands! 😱
* [x] Tests to confirm that this bug is indeed vanquished
## Issue Addressed
Solution 2 proposed here: https://github.com/sigp/lighthouse/issues/1435#issuecomment-692317639
## Proposed Changes
- Adds an optional `--wss-checkpoint` flag that takes a string `root:epoch`
- Verify that the given checkpoint exists in the chain, or that the the chain syncs through this checkpoint. If not, shutdown and prompt the user to purge state before restarting.
## Additional Info
Co-authored-by: Paul Hauner <paul@paulhauner.com>
## Issue Addressed
Closes#673
## Proposed Changes
Store a schema version in the database so that future releases can check they're running against a compatible database version. This would also enable automatic migration on breaking database changes, but that's left as future work.
The database config is also stored in the database so that the `slots_per_restore_point` value can be checked for consistency, which closes#673
- Resolves#1550
- Resolves#824
- Resolves#825
- Resolves#1131
- Resolves#1411
- Resolves#1256
- Resolve#1177
- Includes the `ShufflingId` struct initially defined in #1492. That PR is now closed and the changes are included here, with significant bug fixes.
- Implement the https://github.com/ethereum/eth2.0-APIs in a new `http_api` crate using `warp`. This replaces the `rest_api` crate.
- Add a new `common/eth2` crate which provides a wrapper around `reqwest`, providing the HTTP client that is used by the validator client and for testing. This replaces the `common/remote_beacon_node` crate.
- Create a `http_metrics` crate which is a dedicated server for Prometheus metrics (they are no longer served on the same port as the REST API). We now have flags for `--metrics`, `--metrics-address`, etc.
- Allow the `subnet_id` to be an optional parameter for `VerifiedUnaggregatedAttestation::verify`. This means it does not need to be provided unnecessarily by the validator client.
- Move `fn map_attestation_committee` in `mod beacon_chain::attestation_verification` to a new `fn with_committee_cache` on the `BeaconChain` so the same cache can be used for obtaining validator duties.
- Add some other helpers to `BeaconChain` to assist with common API duties (e.g., `block_root_at_slot`, `head_beacon_block_root`).
- Change the `NaiveAggregationPool` so it can index attestations by `hash_tree_root(attestation.data)`. This is a requirement of the API.
- Add functions to `BeaconChainHarness` to allow it to create slashings and exits.
- Allow for `eth1::Eth1NetworkId` to go to/from a `String`.
- Add functions to the `OperationPool` to allow getting all objects in the pool.
- Add function to `BeaconState` to check if a committee cache is initialized.
- Fix bug where `seconds_per_eth1_block` was not transferring over from `YamlConfig` to `ChainSpec`.
- Add the `deposit_contract_address` to `YamlConfig` and `ChainSpec`. We needed to be able to return it in an API response.
- Change some uses of serde `serialize_with` and `deserialize_with` to a single use of `with` (code quality).
- Impl `Display` and `FromStr` for several BLS fields.
- Check for clock discrepancy when VC polls BN for sync state (with +/- 1 slot tolerance). This is not intended to be comprehensive, it was just easy to do.
- See #1434 for a per-endpoint overview.
- Seeking clarity here: https://github.com/ethereum/eth2.0-APIs/issues/75
- [x] Add docs for prom port to close#1256
- [x] Follow up on this #1177
- [x] ~~Follow up with #1424~~ Will fix in future PR.
- [x] Follow up with #1411
- [x] ~~Follow up with #1260~~ Will fix in future PR.
- [x] Add quotes to all integers.
- [x] Remove `rest_types`
- [x] Address missing beacon block error. (#1629)
- [x] ~~Add tests for lighthouse/peers endpoints~~ Wontfix
- [x] ~~Follow up with validator status proposal~~ Tracked in #1434
- [x] Unify graffiti structs
- [x] ~~Start server when waiting for genesis?~~ Will fix in future PR.
- [x] TODO in http_api tests
- [x] Move lighthouse endpoints off /eth/v1
- [x] Update docs to link to standard
- ~~Blocked on #1586~~
Co-authored-by: Michael Sproul <michael@sigmaprime.io>
Closes#1487Closes#1427
Directory restructure in accordance with #1487. Also has temporary migration code to move the old directories into new structure.
Also extracts all default directory names and utility functions into a `directory` crate to avoid repetitio.
~Since `validator_definition.yaml` stores absolute paths, users will have to manually change the keystore paths or delete the file to get the validators picked up by the vc.~. `validator_definition.yaml` is migrated as well from the default directories.
Co-authored-by: realbigsean <seananderson33@gmail.com>
Co-authored-by: Paul Hauner <paul@paulhauner.com>
## Issue Addressed
- Resolves#1313
## Proposed Changes
Changes the way we start the validator client and beacon node to ensure that we cleanly drop the validator keystores (which therefore ensures we cleanup their lockfiles).
Previously we were holding the validator keystores in a tokio task that was being forcefully killed (i.e., without `Drop`). Now, we hold them in a task that can gracefully handle a shutdown.
Also, switches the `--strict-lockfiles` flag to `--delete-lockfiles`. This means two things:
1. We are now strict on lockfiles by default (before we weren't).
1. There's a simple way for people delete the lockfiles if they experience a crash.
## Additional Info
I've only given the option to ignore *and* delete lockfiles, not just ignore them. I can't see a strong need for ignore-only but could easily add it, if the need arises.
I've flagged this as `api-breaking` since users that have lockfiles lingering around will be required to supply `--delete-lockfiles` next time they run.
## Issue Addressed
Closes#1680
## Proposed Changes
This PR fixes a race condition in beacon node start-up whereby the pubkey cache could be created by the beacon chain builder before the `PersistedBeaconChain` was stored to disk. When the node restarted, it would find the persisted chain missing, and attempt to start from scratch, creating a new pubkey cache in the process. This call to `ValidatorPubkeyCache::new` would fail if the file already existed (which it did). I changed the behaviour so that pubkey cache initialization now doesn't care whether there's a file already in existence (it's only a cache after all). Instead it will truncate and recreate the file in the race scenario described.
## Issue Addressed
N/A
## Proposed Changes
Remove the MacOs tests. They routinely fail, causing bors to retry and slowing down the whole merge process.
## Additional Info
N/A
Co-authored-by: Michael Sproul <michael@sigmaprime.io>
## Issue Addressed
NA
## Proposed Changes
There are four new conditions introduced in v0.12.3:
1. _[REJECT]_ The attestation's epoch matches its target -- i.e. `attestation.data.target.epoch ==
compute_epoch_at_slot(attestation.data.slot)`
1. _[REJECT]_ The attestation's target block is an ancestor of the block named in the LMD vote -- i.e.
`get_ancestor(store, attestation.data.beacon_block_root, compute_start_slot_at_epoch(attestation.data.target.epoch)) == attestation.data.target.root`
1. _[REJECT]_ The committee index is within the expected range -- i.e. `data.index < get_committee_count_per_slot(state, data.target.epoch)`.
1. _[REJECT]_ The number of aggregation bits matches the committee size -- i.e.
`len(attestation.aggregation_bits) == len(get_beacon_committee(state, data.slot, data.index))`.
This PR implements new logic to suit (1) and (2). Tests are added for (3) and (4), although they were already implicitly enforced.
## Additional Info
- There's a bit of edge-case with target root verification that I raised here: https://github.com/ethereum/eth2.0-specs/pull/2001#issuecomment-699246659
- I've had to add an `--ignore` to `cargo audit` to get CI to pass. See https://github.com/sigp/lighthouse/issues/1669
## Issue Addressed
Resolves#1651
## Description
This supercedes #1658. Great work was done by @pawanjay176, I just needed to make a change whilst he is away.
See #1658 for a description, prior reviews and approval by @michaelsproul.
## Additional info
Ignores a rustsec advisory. This is tracked in #1669.
Co-authored-by: pawan <pawandhananjay@gmail.com>
## Proposed Changes
Update test vectors for v0.12.3, and introduced configurable `proportional_slashing_multiplier`.
Also makes `YamlConfig` a bit safer by making every field access in `apply_to_chain_spec` explicit, and removing the `#[serde(default)]` attribute, which would instantiate missing fields to type defaults! Risky!
## Issue Addressed
Resolves#1100
## Proposed Changes
* Implement the `SafeArith` trait for `Slot` and `Epoch`, so that methods like `safe_add` become available.
* Tweak the `SafeArith` trait to allow a different `Rhs` type (analagous to `std::ops::Add`, etc).
* Add a `legacy-arith` feature to `types` and `state_processing` that conditionally enables implementations of
the `std` ops with saturating semantics.
* Check compilation of `types` and `state_processing` _without_ `legacy-arith` on CI,
thus guaranteeing that they only use the `SafeArith` primitives 🎉
## Additional Info
The `legacy-arith` feature gets turned on by all higher-level crates that depend on `state_processing` or `types`, thus allowing the beacon chain, networking, and other components to continue to rely on the availability of ops like `+`, `-`, `*`, etc.
**This is a consensus-breaking change**, but brings us in line with the spec, and our incompatibilities shouldn't have been reachable with any valid configuration of Eth2 parameters.
## Issue Addressed
#629
## Proposed Changes
This removes banned peers from the DHT and informs discovery to block the node_id and the known source IP's associated with this node. It has the capabilities of un banning this peer after a period of time.
This also corrects the logic about banning specific IP addresses. We now use seen_ip addresses from libp2p rather than those sent to us via identify (which also include local addresses).
## Issue Addressed
In principle.. closes#1551 but in general are improvements for performance, maintainability and readability. The logic for the optimistic sync in actually simple
## Proposed Changes
There are miscellaneous things here:
- Remove unnecessary `BatchProcessResult::Partial` to simplify the batch validation logic
- Make batches a state machine. This is done to ensure batch state transitions respect our logic (this was previously done by moving batches between `Vec`s) and to ease the cognitive load of the `SyncingChain` struct
- Move most batch-related logic to the batch
- Remove `PendingBatches` in favor of a map of peers to their batches. This is to avoid duplicating peers inside the chain (peer_pool and pending_batches)
- Add `must_use` decoration to the `ProcessingResult` so that chains that request to be removed are handled accordingly. This also means that chains are now removed in more places than before to account for unhandled cases
- Store batches in a sorted map (`BTreeMap`) access is not O(1) but since the number of _active_ batches is bounded this should be fast, and saves performing hashing ops. Batches are indexed by the epoch they start. Sorted, to easily handle chain advancements (range logic)
- Produce the chain Id from the identifying fields: target root and target slot. This, to guarantee there can't be duplicated chains and be able to consistently search chains by either Id or checkpoint
- Fix chain_id not being present in all chain loggers
- Handle mega-edge case where the processor's work queue is full and the batch can't be sent. In this case the chain would lose the blocks, remain in a "syncing" state and waiting for a result that won't arrive, effectively stalling sync.
- When a batch imports blocks or the chain starts syncing with a local finalized epoch greater that the chain's start epoch, the chain is advanced instead of reset. This is to avoid losing download progress and validate batches faster. This also means that the old `start_epoch` now means "current first unvalidated batch", so it represents more accurately the progress of the chain.
- Batch status peers from the same chain to reduce Arc access.
- Handle a couple of cases where the retry counters for a batch were not updated/checked are now handled via the batch state machine. Basically now if we forget to do it, we will know.
- Do not send back the blocks from the processor to the batch. Instead register the attempt before sending the blocks (does not count as failed)
- When re-requesting a batch, try to avoid not only the last failed peer, but all previous failed peers.
- Optimize requesting batches ahead in the buffer by shuffling idle peers just once (this is just addressing a couple of old TODOs in the code)
- In chain_collection, store chains by their id in a map
- Include a mapping from request_ids to (chain, batch) that requested the batch to avoid the double O(n) search on block responses
- Other stuff:
- impl `slog::KV` for batches
- impl `slog::KV` for syncing chains
- PSA: when logging, we can use `%thing` if `thing` implements `Display`. Same for `?` and `Debug`
### Optimistic syncing:
Try first the batch that contains the current head, if the batch imports any block, advance the chain. If not, if this optimistic batch is inside the current processing window leave it there for future use, if not drop it. The tolerance for this block is the same for downloading, but just once for processing
Co-authored-by: Age Manning <Age@AgeManning.com>
## Issue Addressed
N/A
## Proposed Changes
Prevent subscribing to core gossipsub topics until after we have achieved a full sync. This prevents us censoring gossipsub channels, getting penalised in gossipsub 1.1 scoring and saves us computation time in attempting to validate gossipsub messages which we will be unable to do with a non-sync'd chain.
## Issue Addressed
Closes#1472
## Proposed Changes
Add `--staking` ~~and`staking-with-eth1-endpoint`~~ flag to improve UX for stakers.
Co-authored-by: Paul Hauner <paul@paulhauner.com>
## Issue Addressed
- Resolves#1080
## Proposed Changes
- Call `update_pubkey_cache` only in the `build_all_caches` method and `get_validator_index` method.
## Additional Info
This does reduce the number of places the cache is updated, making it simpler. But the `get_validator_index` method is used a couple times when we are iterating through the entire validator registry (or set of active validators). Before, we would only call `update_pubkey_cache` once before iterating through all validators. So I'm not _totally_ sure this change is worth it.
