1373 lines
50 KiB
Nim
1373 lines
50 KiB
Nim
# beacon_chain
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# Copyright (c) 2018-2020 Status Research & Development GmbH
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# Licensed and distributed under either of
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# * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
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# * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
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# at your option. This file may not be copied, modified, or distributed except according to those terms.
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import
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# Standard library
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std/[algorithm, os, tables, strutils, sequtils, times, math, terminal],
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std/[osproc, random],
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# Nimble packages
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stew/[objects, byteutils, endians2, io2], stew/shims/macros,
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chronos, confutils, metrics, json_rpc/[rpcserver, jsonmarshal],
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chronicles, bearssl, blscurve,
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json_serialization/std/[options, sets, net], serialization/errors,
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eth/[keys, async_utils],
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eth/common/eth_types_json_serialization,
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eth/db/[kvstore, kvstore_sqlite3],
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eth/p2p/enode, eth/p2p/discoveryv5/[protocol, enr],
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# Local modules
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spec/[datatypes, digest, crypto, beaconstate, helpers, network, presets],
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spec/state_transition,
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conf, time, beacon_chain_db, validator_pool, extras,
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attestation_pool, exit_pool, eth2_network, eth2_discovery,
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beacon_node_common, beacon_node_types, beacon_node_status,
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block_pools/[spec_cache, chain_dag, quarantine, clearance, block_pools_types],
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nimbus_binary_common, network_metadata,
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mainchain_monitor, version, ssz/[merkleization], merkle_minimal,
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sync_protocol, request_manager, keystore_management, interop, statusbar,
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sync_manager, validator_duties, validator_api,
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validator_slashing_protection,
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./eth2_processor
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const
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genesisFile* = "genesis.ssz"
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hasPrompt = not defined(withoutPrompt)
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type
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RpcServer* = RpcHttpServer
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template init(T: type RpcHttpServer, ip: ValidIpAddress, port: Port): T =
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newRpcHttpServer([initTAddress(ip, port)])
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# https://github.com/ethereum/eth2.0-metrics/blob/master/metrics.md#interop-metrics
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declareGauge beacon_slot,
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"Latest slot of the beacon chain state"
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declareGauge beacon_head_slot,
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"Slot of the head block of the beacon chain"
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# Finalization tracking
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declareGauge finalization_delay,
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"Epoch delay between scheduled epoch and finalized epoch"
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declareGauge ticks_delay,
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"How long does to take to run the onSecond loop"
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logScope: topics = "beacnde"
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proc getStateFromSnapshot(conf: BeaconNodeConf, stateSnapshotContents: ref string): NilableBeaconStateRef =
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var
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genesisPath = conf.dataDir/genesisFile
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snapshotContents: TaintedString
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writeGenesisFile = false
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if conf.stateSnapshot.isSome:
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let
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snapshotPath = conf.stateSnapshot.get.string
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snapshotExt = splitFile(snapshotPath).ext
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if cmpIgnoreCase(snapshotExt, ".ssz") != 0:
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error "The supplied state snapshot must be a SSZ file",
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suppliedPath = snapshotPath
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quit 1
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snapshotContents = readFile(snapshotPath)
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if fileExists(genesisPath):
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let genesisContents = readFile(genesisPath)
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if snapshotContents != genesisContents:
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error "Data directory not empty. Existing genesis state differs from supplied snapshot",
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dataDir = conf.dataDir.string, snapshot = snapshotPath
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quit 1
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else:
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debug "No previous genesis state. Importing snapshot",
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genesisPath, dataDir = conf.dataDir.string
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writeGenesisFile = true
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genesisPath = snapshotPath
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elif fileExists(genesisPath):
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try: snapshotContents = readFile(genesisPath)
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except CatchableError as err:
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error "Failed to read genesis file", err = err.msg
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quit 1
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elif stateSnapshotContents != nil:
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swap(snapshotContents, TaintedString stateSnapshotContents[])
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else:
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# No snapshot was provided. We should wait for genesis.
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return nil
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result = try:
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newClone(SSZ.decode(snapshotContents, BeaconState))
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except SerializationError:
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error "Failed to import genesis file", path = genesisPath
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quit 1
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info "Loaded genesis state", path = genesisPath
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if writeGenesisFile:
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try:
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notice "Writing genesis to data directory", path = conf.dataDir/genesisFile
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writeFile(conf.dataDir/genesisFile, snapshotContents.string)
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except CatchableError as err:
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error "Failed to persist genesis file to data dir",
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err = err.msg, genesisFile = conf.dataDir/genesisFile
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quit 1
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func enrForkIdFromState(state: BeaconState): ENRForkID =
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let
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forkVer = state.fork.current_version
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forkDigest = compute_fork_digest(forkVer, state.genesis_validators_root)
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ENRForkID(
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fork_digest: forkDigest,
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next_fork_version: forkVer,
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next_fork_epoch: FAR_FUTURE_EPOCH)
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proc init*(T: type BeaconNode,
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rng: ref BrHmacDrbgContext,
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conf: BeaconNodeConf,
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stateSnapshotContents: ref string): Future[BeaconNode] {.async.} =
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let
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netKeys = getPersistentNetKeys(rng[], conf)
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nickname = if conf.nodeName == "auto": shortForm(netKeys)
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else: conf.nodeName
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db = BeaconChainDB.init(kvStore SqStoreRef.init(conf.databaseDir, "nbc").tryGet())
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var mainchainMonitor: MainchainMonitor
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if not ChainDAGRef.isInitialized(db):
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# Fresh start - need to load a genesis state from somewhere
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var genesisState = conf.getStateFromSnapshot(stateSnapshotContents)
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# Try file from command line first
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if genesisState.isNil:
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if conf.web3Url.len == 0:
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fatal "Web3 URL not specified"
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quit 1
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if conf.depositContractAddress.isNone:
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fatal "Deposit contract address not specified"
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quit 1
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if conf.depositContractDeployedAt.isNone:
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# When we don't have a known genesis state, the network metadata
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# must specify the deployment block of the contract.
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fatal "Deposit contract deployment block not specified"
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quit 1
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let web3 = web3Provider(conf.web3Url)
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let deployedAtAsHash =
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if conf.depositContractDeployedAt.get.startsWith "0x":
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try: BlockHash.fromHex conf.depositContractDeployedAt.get
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except ValueError:
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fatal "Invalid hex value specified for deposit-contract-block"
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quit 1
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else:
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let blockNum = try: parseBiggestUInt conf.depositContractDeployedAt.get
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except ValueError:
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fatal "Invalid nummeric value for deposit-contract-block"
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quit 1
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await getEth1BlockHash(conf.web3Url, blockId blockNum)
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# TODO Could move this to a separate "GenesisMonitor" process or task
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# that would do only this - see Paul's proposal for this.
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mainchainMonitor = MainchainMonitor.init(
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conf.runtimePreset,
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web3,
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conf.depositContractAddress.get,
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Eth1Data(block_hash: deployedAtAsHash.asEth2Digest, deposit_count: 0))
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mainchainMonitor.start()
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genesisState = await mainchainMonitor.waitGenesis()
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if bnStatus == BeaconNodeStatus.Stopping:
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return nil
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notice "Eth2 genesis state detected",
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genesisTime = genesisState.genesisTime,
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eth1Block = genesisState.eth1_data.block_hash,
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totalDeposits = genesisState.eth1_data.deposit_count
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# This is needed to prove the not nil property from here on
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if genesisState == nil:
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doAssert false
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else:
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if genesisState.slot != GENESIS_SLOT:
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# TODO how to get a block from a non-genesis state?
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error "Starting from non-genesis state not supported",
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stateSlot = genesisState.slot,
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stateRoot = hash_tree_root(genesisState[])
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quit 1
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let tailBlock = get_initial_beacon_block(genesisState[])
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try:
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ChainDAGRef.preInit(db, genesisState[], tailBlock)
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doAssert ChainDAGRef.isInitialized(db), "preInit should have initialized db"
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except CatchableError as e:
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error "Failed to initialize database", err = e.msg
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quit 1
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if stateSnapshotContents != nil:
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# The memory for the initial snapshot won't be needed anymore
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stateSnapshotContents[] = ""
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# TODO check that genesis given on command line (if any) matches database
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let
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chainDagFlags = if conf.verifyFinalization: {verifyFinalization}
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else: {}
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chainDag = init(ChainDAGRef, conf.runtimePreset, db, chainDagFlags)
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quarantine = QuarantineRef()
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if mainchainMonitor.isNil and
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conf.web3Url.len > 0 and
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conf.depositContractAddress.isSome:
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mainchainMonitor = MainchainMonitor.init(
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conf.runtimePreset,
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web3Provider(conf.web3Url),
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conf.depositContractAddress.get,
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chainDag.headState.data.data.eth1_data)
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# TODO if we don't have any validators attached, we don't need a mainchain
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# monitor
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mainchainMonitor.start()
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let rpcServer = if conf.rpcEnabled:
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RpcServer.init(conf.rpcAddress, conf.rpcPort)
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else:
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nil
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let
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enrForkId = enrForkIdFromState(chainDag.headState.data.data)
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topicBeaconBlocks = getBeaconBlocksTopic(enrForkId.forkDigest)
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topicAggregateAndProofs = getAggregateAndProofsTopic(enrForkId.forkDigest)
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network = createEth2Node(rng, conf, netKeys, enrForkId)
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attestationPool = newClone(AttestationPool.init(chainDag, quarantine))
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exitPool = newClone(ExitPool.init(chainDag, quarantine))
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var res = BeaconNode(
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nickname: nickname,
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graffitiBytes: if conf.graffiti.isSome: conf.graffiti.get.GraffitiBytes
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else: defaultGraffitiBytes(),
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network: network,
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netKeys: netKeys,
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db: db,
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config: conf,
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chainDag: chainDag,
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quarantine: quarantine,
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attestationPool: attestationPool,
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exitPool: exitPool,
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mainchainMonitor: mainchainMonitor,
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beaconClock: BeaconClock.init(chainDag.headState.data.data),
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rpcServer: rpcServer,
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forkDigest: enrForkId.forkDigest,
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topicBeaconBlocks: topicBeaconBlocks,
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topicAggregateAndProofs: topicAggregateAndProofs,
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)
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res.attachedValidators = ValidatorPool.init(
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SlashingProtectionDB.init(
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chainDag.headState.data.data.genesis_validators_root,
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when UseSlashingProtection:
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kvStore SqStoreRef.init(conf.validatorsDir(), "slashing_protection").tryGet()
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else:
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KvStoreRef()
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)
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)
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proc getWallTime(): BeaconTime = res.beaconClock.now()
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res.processor = Eth2Processor.new(
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conf, chainDag, attestationPool, exitPool, quarantine, getWallTime)
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res.requestManager = RequestManager.init(
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network, res.processor.blocksQueue)
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if res.config.inProcessValidators:
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res.addLocalValidators()
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else:
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res.vcProcess = startProcess(getAppDir() & "/signing_process".addFileExt(ExeExt),
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getCurrentDir(), [$res.config.validatorsDir,
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$res.config.secretsDir])
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res.addRemoteValidators()
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# This merely configures the BeaconSync
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# The traffic will be started when we join the network.
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network.initBeaconSync(chainDag, enrForkId.forkDigest)
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return res
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func verifyFinalization(node: BeaconNode, slot: Slot) =
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# Epoch must be >= 4 to check finalization
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const SETTLING_TIME_OFFSET = 1'u64
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let epoch = slot.compute_epoch_at_slot()
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# Don't static-assert this -- if this isn't called, don't require it
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doAssert SLOTS_PER_EPOCH > SETTLING_TIME_OFFSET
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# Intentionally, loudly assert. Point is to fail visibly and unignorably
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# during testing.
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if epoch >= 4 and slot mod SLOTS_PER_EPOCH > SETTLING_TIME_OFFSET:
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let finalizedEpoch =
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node.chainDag.finalizedHead.slot.compute_epoch_at_slot()
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# Finalization rule 234, that has the most lag slots among the cases, sets
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# state.finalized_checkpoint = old_previous_justified_checkpoint.epoch + 3
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# and then state.slot gets incremented, to increase the maximum offset, if
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# finalization occurs every slot, to 4 slots vs scheduledSlot.
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doAssert finalizedEpoch + 4 >= epoch
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proc installAttestationSubnetHandlers(node: BeaconNode, subnets: set[uint8]) =
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var attestationSubscriptions: seq[Future[void]] = @[]
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# https://github.com/ethereum/eth2.0-specs/blob/v0.12.3/specs/phase0/p2p-interface.md#attestations-and-aggregation
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for subnet in subnets:
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attestationSubscriptions.add(node.network.subscribe(
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getAttestationTopic(node.forkDigest, subnet)))
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waitFor allFutures(attestationSubscriptions)
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# https://github.com/ethereum/eth2.0-specs/blob/v0.12.3/specs/phase0/p2p-interface.md#metadata
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node.network.metadata.seq_number += 1
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for subnet in subnets:
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node.network.metadata.attnets[subnet] = true
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proc cycleAttestationSubnets(node: BeaconNode, slot: Slot) =
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static: doAssert RANDOM_SUBNETS_PER_VALIDATOR == 1
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let epochParity = slot.epoch mod 2
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var attachedValidators: seq[ValidatorIndex]
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for validatorIndex in 0 ..< node.chainDag.headState.data.data.validators.len:
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if node.getAttachedValidator(
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node.chainDag.headState.data.data, validatorIndex.ValidatorIndex) != nil:
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attachedValidators.add validatorIndex.ValidatorIndex
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if attachedValidators.len == 0:
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return
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let (newAttestationSubnets, expiringSubnets, newSubnets) =
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get_attestation_subnet_changes(
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node.chainDag.headState.data.data, attachedValidators,
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node.attestationSubnets, slot.epoch)
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node.attestationSubnets = newAttestationSubnets
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debug "Attestation subnets",
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expiring_subnets = expiringSubnets,
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current_epoch_subnets =
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node.attestationSubnets.subscribedSubnets[1 - epochParity],
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upcoming_subnets = node.attestationSubnets.subscribedSubnets[epochParity],
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new_subnets = newSubnets,
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stability_subnet = node.attestationSubnets.stabilitySubnet,
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stability_subnet_expiration_epoch =
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node.attestationSubnets.stabilitySubnetExpirationEpoch
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block:
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var unsubscriptions: seq[Future[void]] = @[]
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for expiringSubnet in expiringSubnets:
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unsubscriptions.add(node.network.unsubscribe(
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getAttestationTopic(node.forkDigest, expiringSubnet)))
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waitFor allFutures(unsubscriptions)
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# https://github.com/ethereum/eth2.0-specs/blob/v0.12.3/specs/phase0/p2p-interface.md#metadata
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# The race condition window is smaller by placing the fast, local, and
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# synchronous operation after a variable-latency, asynchronous action.
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node.network.metadata.seq_number += 1
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for expiringSubnet in expiringSubnets:
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node.network.metadata.attnets[expiringSubnet] = false
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node.installAttestationSubnetHandlers(newSubnets)
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block:
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let subscribed_subnets =
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node.attestationSubnets.subscribedSubnets[0] +
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node.attestationSubnets.subscribedSubnets[1] +
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{node.attestationSubnets.stabilitySubnet.uint8}
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for subnet in 0'u8 ..< ATTESTATION_SUBNET_COUNT:
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doAssert node.network.metadata.attnets[subnet] ==
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(subnet in subscribed_subnets)
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proc getAttestationHandlers(node: BeaconNode): Future[void] =
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var initialSubnets: set[uint8]
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for i in 0'u8 ..< ATTESTATION_SUBNET_COUNT:
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initialSubnets.incl i
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node.installAttestationSubnetHandlers(initialSubnets)
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# https://github.com/ethereum/eth2.0-specs/blob/v0.12.3/specs/phase0/validator.md#phase-0-attestation-subnet-stability
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let wallEpoch = node.beaconClock.now().slotOrZero().epoch
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node.attestationSubnets.stabilitySubnet = rand(ATTESTATION_SUBNET_COUNT - 1).uint64
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node.attestationSubnets.stabilitySubnetExpirationEpoch =
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wallEpoch + getStabilitySubnetLength()
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# Sets the "current" and "future" attestation subnets. One of these gets
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# replaced by get_attestation_subnet_changes() immediately.
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node.attestationSubnets.subscribedSubnets[0] = initialSubnets
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node.attestationSubnets.subscribedSubnets[1] = initialSubnets
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node.network.subscribe(getAggregateAndProofsTopic(node.forkDigest))
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proc addMessageHandlers(node: BeaconNode): Future[void] =
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allFutures(
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# As a side-effect, this gets the attestation subnets too.
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node.network.subscribe(node.topicBeaconBlocks),
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node.network.subscribe(getAttesterSlashingsTopic(node.forkDigest)),
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node.network.subscribe(getProposerSlashingsTopic(node.forkDigest)),
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node.network.subscribe(getVoluntaryExitsTopic(node.forkDigest)),
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node.getAttestationHandlers()
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)
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func getTopicSubscriptionEnabled(node: BeaconNode): bool =
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node.attestationSubnets.subscribedSubnets[0].len +
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node.attestationSubnets.subscribedSubnets[1].len > 0
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proc removeMessageHandlers(node: BeaconNode): Future[void] =
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node.attestationSubnets.subscribedSubnets[0] = {}
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node.attestationSubnets.subscribedSubnets[1] = {}
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doAssert not node.getTopicSubscriptionEnabled()
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var unsubscriptions = mapIt(
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[getBeaconBlocksTopic(node.forkDigest),
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getVoluntaryExitsTopic(node.forkDigest),
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getProposerSlashingsTopic(node.forkDigest),
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getAttesterSlashingsTopic(node.forkDigest),
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getAggregateAndProofsTopic(node.forkDigest)],
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node.network.unsubscribe(it))
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for subnet in 0'u64 ..< ATTESTATION_SUBNET_COUNT:
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unsubscriptions.add node.network.unsubscribe(
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getAttestationTopic(node.forkDigest, subnet))
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allFutures(unsubscriptions)
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proc onSlotStart(node: BeaconNode, lastSlot, scheduledSlot: Slot) {.async.} =
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## Called at the beginning of a slot - usually every slot, but sometimes might
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## skip a few in case we're running late.
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## lastSlot: the last slot that we successfully processed, so we know where to
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## start work from
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## scheduledSlot: the slot that we were aiming for, in terms of timing
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let
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# The slot we should be at, according to the clock
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beaconTime = node.beaconClock.now()
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wallSlot = beaconTime.toSlot()
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finalizedEpoch =
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node.chainDag.finalizedHead.blck.slot.compute_epoch_at_slot()
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info "Slot start",
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lastSlot = shortLog(lastSlot),
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scheduledSlot = shortLog(scheduledSlot),
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beaconTime = shortLog(beaconTime),
|
|
peers = len(node.network.peerPool),
|
|
head = shortLog(node.chainDag.head),
|
|
headEpoch = shortLog(node.chainDag.head.slot.compute_epoch_at_slot()),
|
|
finalized = shortLog(node.chainDag.finalizedHead.blck),
|
|
finalizedEpoch = shortLog(finalizedEpoch)
|
|
|
|
# Check before any re-scheduling of onSlotStart()
|
|
checkIfShouldStopAtEpoch(scheduledSlot, node.config.stopAtEpoch)
|
|
|
|
if not wallSlot.afterGenesis or (wallSlot.slot < lastSlot):
|
|
let
|
|
slot =
|
|
if wallSlot.afterGenesis: wallSlot.slot
|
|
else: GENESIS_SLOT
|
|
nextSlot = slot + 1 # At least GENESIS_SLOT + 1!
|
|
|
|
# This can happen if the system clock changes time for example, and it's
|
|
# pretty bad
|
|
# TODO shut down? time either was or is bad, and PoS relies on accuracy..
|
|
warn "Beacon clock time moved back, rescheduling slot actions",
|
|
beaconTime = shortLog(beaconTime),
|
|
lastSlot = shortLog(lastSlot),
|
|
scheduledSlot = shortLog(scheduledSlot),
|
|
nextSlot = shortLog(nextSlot)
|
|
|
|
addTimer(saturate(node.beaconClock.fromNow(nextSlot))) do (p: pointer):
|
|
asyncCheck node.onSlotStart(slot, nextSlot)
|
|
|
|
return
|
|
|
|
let
|
|
slot = wallSlot.slot # afterGenesis == true!
|
|
nextSlot = slot + 1
|
|
|
|
beacon_slot.set slot.int64
|
|
finalization_delay.set scheduledSlot.epoch.int64 - finalizedEpoch.int64
|
|
|
|
if node.config.verifyFinalization:
|
|
verifyFinalization(node, scheduledSlot)
|
|
|
|
if slot > lastSlot + SLOTS_PER_EPOCH:
|
|
# We've fallen behind more than an epoch - there's nothing clever we can
|
|
# do here really, except skip all the work and try again later.
|
|
# TODO how long should the period be? Using an epoch because that's roughly
|
|
# how long attestations remain interesting
|
|
# TODO should we shut down instead? clearly we're unable to keep up
|
|
warn "Unable to keep up, skipping ahead",
|
|
lastSlot = shortLog(lastSlot),
|
|
slot = shortLog(slot),
|
|
nextSlot = shortLog(nextSlot),
|
|
scheduledSlot = shortLog(scheduledSlot)
|
|
|
|
addTimer(saturate(node.beaconClock.fromNow(nextSlot))) do (p: pointer):
|
|
# We pass the current slot here to indicate that work should be skipped!
|
|
asyncCheck node.onSlotStart(slot, nextSlot)
|
|
return
|
|
|
|
# Whatever we do during the slot, we need to know the head, because this will
|
|
# give us a state to work with and thus a shuffling.
|
|
# TODO typically, what consitutes correct actions stays constant between slot
|
|
# updates and is stable across some epoch transitions as well - see how
|
|
# we can avoid recalculating everything here
|
|
# TODO if the head is very old, that is indicative of something being very
|
|
# wrong - us being out of sync or disconnected from the network - need
|
|
# to consider what to do in that case:
|
|
# * nothing - the other parts of the application will reconnect and
|
|
# start listening to broadcasts, learn a new head etc..
|
|
# risky, because the network might stall if everyone does
|
|
# this, because no blocks will be produced
|
|
# * shut down - this allows the user to notice and take action, but is
|
|
# kind of harsh
|
|
# * keep going - we create blocks and attestations as usual and send them
|
|
# out - if network conditions improve, fork choice should
|
|
# eventually select the correct head and the rest will
|
|
# disappear naturally - risky because user is not aware,
|
|
# and might lose stake on canonical chain but "just works"
|
|
# when reconnected..
|
|
discard node.updateHead(slot)
|
|
|
|
# TODO is the slot of the clock or the head block more interesting? provide
|
|
# rationale in comment
|
|
beacon_head_slot.set slot.int64
|
|
|
|
# Time passes in here..
|
|
await node.handleValidatorDuties(lastSlot, slot)
|
|
|
|
let
|
|
nextSlotStart = saturate(node.beaconClock.fromNow(nextSlot))
|
|
|
|
info "Slot end",
|
|
slot = shortLog(slot),
|
|
nextSlot = shortLog(nextSlot),
|
|
head = shortLog(node.chainDag.head),
|
|
headEpoch = shortLog(node.chainDag.head.slot.compute_epoch_at_slot()),
|
|
finalizedHead = shortLog(node.chainDag.finalizedHead.blck),
|
|
finalizedEpoch = shortLog(node.chainDag.finalizedHead.blck.slot.compute_epoch_at_slot())
|
|
|
|
# Syncing tends to be ~1 block/s, and allow for an epoch of time for libp2p
|
|
# subscribing to spin up. The faster the sync, the more wallSlot - headSlot
|
|
# lead time is required
|
|
const
|
|
TOPIC_SUBSCRIBE_THRESHOLD_SLOTS = 64
|
|
HYSTERESIS_BUFFER = 16
|
|
|
|
let
|
|
syncQueueLen = node.syncManager.syncQueueLen
|
|
topicSubscriptionEnabled = node.getTopicSubscriptionEnabled()
|
|
if
|
|
# Don't enable if already enabled; to avoid race conditions requires care,
|
|
# but isn't crucial, as this condition spuriously fail, but the next time,
|
|
# should properly succeed.
|
|
not topicSubscriptionEnabled and
|
|
# SyncManager forward sync by default runs until maxHeadAge slots, or one
|
|
# epoch range is achieved. This particular condition has a couple caveats
|
|
# including that under certain conditions, debtsCount appears to push len
|
|
# (here, syncQueueLen) to underflow-like values; and even when exactly at
|
|
# the expected walltime slot the queue isn't necessarily empty. Therefore
|
|
# TOPIC_SUBSCRIBE_THRESHOLD_SLOTS is not exactly the number of slots that
|
|
# are left. Furthermore, even when 0 peers are being used, this won't get
|
|
# to 0 slots in syncQueueLen, but that's a vacuous condition given that a
|
|
# networking interaction cannot happen under such circumstances.
|
|
syncQueueLen < TOPIC_SUBSCRIBE_THRESHOLD_SLOTS:
|
|
# When node.cycleAttestationSubnets() is enabled more properly, integrate
|
|
# this into the node.cycleAttestationSubnets() call.
|
|
debug "Enabling topic subscriptions",
|
|
wallSlot = slot,
|
|
headSlot = node.chainDag.head.slot,
|
|
syncQueueLen
|
|
|
|
await node.addMessageHandlers()
|
|
doAssert node.getTopicSubscriptionEnabled()
|
|
elif
|
|
topicSubscriptionEnabled and
|
|
syncQueueLen > TOPIC_SUBSCRIBE_THRESHOLD_SLOTS + HYSTERESIS_BUFFER and
|
|
# Filter out underflow from debtsCount; plausible queue lengths can't
|
|
# exceed wallslot, with safety margin.
|
|
syncQueueLen < 2 * slot.uint64:
|
|
debug "Disabling topic subscriptions",
|
|
wallSlot = slot,
|
|
headSlot = node.chainDag.head.slot,
|
|
syncQueueLen
|
|
await node.removeMessageHandlers()
|
|
|
|
# Subscription or unsubscription might have occurred; recheck
|
|
if slot.isEpoch and node.getTopicSubscriptionEnabled:
|
|
node.cycleAttestationSubnets(slot)
|
|
|
|
when declared(GC_fullCollect):
|
|
# The slots in the beacon node work as frames in a game: we want to make
|
|
# sure that we're ready for the next one and don't get stuck in lengthy
|
|
# garbage collection tasks when time is of essence in the middle of a slot -
|
|
# while this does not guarantee that we'll never collect during a slot, it
|
|
# makes sure that all the scratch space we used during slot tasks (logging,
|
|
# temporary buffers etc) gets recycled for the next slot that is likely to
|
|
# need similar amounts of memory.
|
|
GC_fullCollect()
|
|
|
|
addTimer(nextSlotStart) do (p: pointer):
|
|
asyncCheck node.onSlotStart(slot, nextSlot)
|
|
|
|
proc handleMissingBlocks(node: BeaconNode) =
|
|
let missingBlocks = node.quarantine.checkMissing()
|
|
if missingBlocks.len > 0:
|
|
debug "Requesting detected missing blocks", blocks = shortLog(missingBlocks)
|
|
node.requestManager.fetchAncestorBlocks(missingBlocks)
|
|
|
|
proc onSecond(node: BeaconNode) =
|
|
## This procedure will be called once per second.
|
|
if not(node.syncManager.inProgress):
|
|
node.handleMissingBlocks()
|
|
|
|
proc runOnSecondLoop(node: BeaconNode) {.async.} =
|
|
let sleepTime = chronos.seconds(1)
|
|
const nanosecondsIn1s = float(chronos.seconds(1).nanoseconds)
|
|
while true:
|
|
let start = chronos.now(chronos.Moment)
|
|
await chronos.sleepAsync(sleepTime)
|
|
let afterSleep = chronos.now(chronos.Moment)
|
|
let sleepTime = afterSleep - start
|
|
node.onSecond()
|
|
let finished = chronos.now(chronos.Moment)
|
|
let processingTime = finished - afterSleep
|
|
ticks_delay.set(sleepTime.nanoseconds.float / nanosecondsIn1s)
|
|
trace "onSecond task completed", sleepTime, processingTime
|
|
|
|
proc startSyncManager(node: BeaconNode) =
|
|
func getLocalHeadSlot(): Slot =
|
|
node.chainDag.head.slot
|
|
|
|
proc getLocalWallSlot(): Slot =
|
|
let epoch = node.beaconClock.now().slotOrZero.compute_epoch_at_slot() +
|
|
1'u64
|
|
epoch.compute_start_slot_at_epoch()
|
|
|
|
func getFirstSlotAtFinalizedEpoch(): Slot =
|
|
let fepoch = node.chainDag.headState.data.data.finalized_checkpoint.epoch
|
|
compute_start_slot_at_epoch(fepoch)
|
|
|
|
proc scoreCheck(peer: Peer): bool =
|
|
if peer.score < PeerScoreLowLimit:
|
|
try:
|
|
debug "Peer score is too low, disconnecting", peer = peer,
|
|
peer_score = peer.score, score_low_limit = PeerScoreLowLimit,
|
|
score_high_limit = PeerScoreHighLimit
|
|
# We do not care about result of this operation, because even if
|
|
# disconnect operation fails, peer will still be added to SeenTable
|
|
# and removed from PeerPool. So it will be not reused for syncing for
|
|
# `SeenTablePenaltyError` time.
|
|
asyncSpawn peer.disconnect(PeerScoreLow)
|
|
except:
|
|
discard
|
|
false
|
|
else:
|
|
true
|
|
|
|
node.network.peerPool.setScoreCheck(scoreCheck)
|
|
|
|
node.syncManager = newSyncManager[Peer, PeerID](
|
|
node.network.peerPool, getLocalHeadSlot, getLocalWallSlot,
|
|
getFirstSlotAtFinalizedEpoch, node.processor.blocksQueue, chunkSize = 32
|
|
)
|
|
node.syncManager.start()
|
|
|
|
proc currentSlot(node: BeaconNode): Slot =
|
|
node.beaconClock.now.slotOrZero
|
|
|
|
proc connectedPeersCount(node: BeaconNode): int =
|
|
len(node.network.peerPool)
|
|
|
|
proc installBeaconApiHandlers(rpcServer: RpcServer, node: BeaconNode) =
|
|
rpcServer.rpc("getBeaconHead") do () -> Slot:
|
|
return node.chainDag.head.slot
|
|
|
|
rpcServer.rpc("getChainHead") do () -> JsonNode:
|
|
let
|
|
head = node.chainDag.head
|
|
finalized = node.chainDag.headState.data.data.finalized_checkpoint
|
|
justified = node.chainDag.headState.data.data.current_justified_checkpoint
|
|
return %* {
|
|
"head_slot": head.slot,
|
|
"head_block_root": head.root.data.toHex(),
|
|
"finalized_slot": finalized.epoch * SLOTS_PER_EPOCH,
|
|
"finalized_block_root": finalized.root.data.toHex(),
|
|
"justified_slot": justified.epoch * SLOTS_PER_EPOCH,
|
|
"justified_block_root": justified.root.data.toHex(),
|
|
}
|
|
|
|
rpcServer.rpc("getSyncing") do () -> bool:
|
|
let
|
|
wallSlot = currentSlot(node)
|
|
headSlot = node.chainDag.head.slot
|
|
# FIXME: temporary hack: If more than 1 block away from expected head, then we are "syncing"
|
|
return (headSlot + 1) < wallSlot
|
|
|
|
template requireOneOf(x, y: distinct Option) =
|
|
if x.isNone xor y.isNone:
|
|
raise newException(CatchableError,
|
|
"Please specify one of " & astToStr(x) & " or " & astToStr(y))
|
|
|
|
template jsonResult(x: auto): auto =
|
|
StringOfJson(Json.encode(x))
|
|
|
|
rpcServer.rpc("getBeaconBlock") do (slot: Option[Slot],
|
|
root: Option[Eth2Digest]) -> StringOfJson:
|
|
requireOneOf(slot, root)
|
|
var blockHash: Eth2Digest
|
|
if root.isSome:
|
|
blockHash = root.get
|
|
else:
|
|
let foundRef = node.chainDag.getBlockByPreciseSlot(slot.get)
|
|
if foundRef != nil:
|
|
blockHash = foundRef.root
|
|
else:
|
|
return StringOfJson("null")
|
|
|
|
let dbBlock = node.db.getBlock(blockHash)
|
|
if dbBlock.isSome:
|
|
return jsonResult(dbBlock.get)
|
|
else:
|
|
return StringOfJson("null")
|
|
|
|
rpcServer.rpc("getBeaconState") do (slot: Option[Slot],
|
|
root: Option[Eth2Digest]) -> StringOfJson:
|
|
requireOneOf(slot, root)
|
|
if slot.isSome:
|
|
# TODO sanity check slot so that it doesn't cause excessive rewinding
|
|
let blk = node.chainDag.head.atSlot(slot.get)
|
|
node.chainDag.withState(node.chainDag.tmpState, blk):
|
|
return jsonResult(state)
|
|
else:
|
|
let tmp = BeaconStateRef() # TODO use tmpState - but load the entire StateData!
|
|
let state = node.db.getState(root.get, tmp[], noRollback)
|
|
if state:
|
|
return jsonResult(tmp[])
|
|
else:
|
|
return StringOfJson("null")
|
|
|
|
rpcServer.rpc("getNetworkPeerId") do () -> string:
|
|
return $publicKey(node.network)
|
|
|
|
rpcServer.rpc("getNetworkPeers") do () -> seq[string]:
|
|
for peerId, peer in node.network.peerPool:
|
|
result.add $peerId
|
|
|
|
rpcServer.rpc("getNetworkEnr") do () -> string:
|
|
return $node.network.discovery.localNode.record
|
|
|
|
proc installDebugApiHandlers(rpcServer: RpcServer, node: BeaconNode) =
|
|
rpcServer.rpc("getNodeVersion") do () -> string:
|
|
return "Nimbus/" & fullVersionStr
|
|
|
|
rpcServer.rpc("getSpecPreset") do () -> JsonNode:
|
|
var res = newJObject()
|
|
genStmtList:
|
|
for presetValue in PresetValue:
|
|
if presetValue notin ignoredValues + runtimeValues:
|
|
let
|
|
settingSym = ident($presetValue)
|
|
settingKey = newLit(toLowerAscii($presetValue))
|
|
let f = quote do:
|
|
res[`settingKey`] = %(presets.`settingSym`)
|
|
yield f
|
|
|
|
for field, value in fieldPairs(node.config.runtimePreset):
|
|
res[field] = when value isnot Version: %value
|
|
else: %value.toUInt64
|
|
|
|
return res
|
|
|
|
rpcServer.rpc("peers") do () -> JsonNode:
|
|
var res = newJObject()
|
|
var peers = newJArray()
|
|
for id, peer in node.network.peerPool:
|
|
peers.add(
|
|
%(
|
|
info: shortLog(peer.info),
|
|
connectionState: $peer.connectionState,
|
|
score: peer.score,
|
|
)
|
|
)
|
|
res.add("peers", peers)
|
|
|
|
return res
|
|
|
|
proc installRpcHandlers(rpcServer: RpcServer, node: BeaconNode) =
|
|
rpcServer.installValidatorApiHandlers(node)
|
|
rpcServer.installBeaconApiHandlers(node)
|
|
rpcServer.installDebugApiHandlers(node)
|
|
|
|
proc installMessageValidators(node: BeaconNode) =
|
|
# https://github.com/ethereum/eth2.0-specs/blob/v0.12.3/specs/phase0/p2p-interface.md#attestations-and-aggregation
|
|
# These validators stay around the whole time, regardless of which specific
|
|
# subnets are subscribed to during any given epoch.
|
|
for it in 0'u64 ..< ATTESTATION_SUBNET_COUNT.uint64:
|
|
closureScope:
|
|
let ci = it
|
|
node.network.addValidator(
|
|
getAttestationTopic(node.forkDigest, ci),
|
|
# This proc needs to be within closureScope; don't lift out of loop.
|
|
proc(attestation: Attestation): ValidationResult =
|
|
node.processor[].attestationValidator(attestation, ci))
|
|
|
|
node.network.addValidator(
|
|
getAggregateAndProofsTopic(node.forkDigest),
|
|
proc(signedAggregateAndProof: SignedAggregateAndProof): ValidationResult =
|
|
node.processor[].aggregateValidator(signedAggregateAndProof))
|
|
|
|
node.network.addValidator(
|
|
node.topicBeaconBlocks,
|
|
proc (signedBlock: SignedBeaconBlock): ValidationResult =
|
|
node.processor[].blockValidator(signedBlock))
|
|
|
|
node.network.addValidator(
|
|
getAttesterSlashingsTopic(node.forkDigest),
|
|
proc (attesterSlashing: AttesterSlashing): ValidationResult =
|
|
node.processor[].attesterSlashingValidator(attesterSlashing))
|
|
|
|
node.network.addValidator(
|
|
getProposerSlashingsTopic(node.forkDigest),
|
|
proc (proposerSlashing: ProposerSlashing): ValidationResult =
|
|
node.processor[].proposerSlashingValidator(proposerSlashing))
|
|
|
|
node.network.addValidator(
|
|
getVoluntaryExitsTopic(node.forkDigest),
|
|
proc (signedVoluntaryExit: SignedVoluntaryExit): ValidationResult =
|
|
node.processor[].voluntaryExitValidator(signedVoluntaryExit))
|
|
|
|
proc stop*(node: BeaconNode) =
|
|
bnStatus = BeaconNodeStatus.Stopping
|
|
notice "Graceful shutdown"
|
|
if not node.config.inProcessValidators:
|
|
node.vcProcess.close()
|
|
waitFor node.network.stop()
|
|
node.db.close()
|
|
notice "Database closed"
|
|
|
|
proc run*(node: BeaconNode) =
|
|
if bnStatus == BeaconNodeStatus.Starting:
|
|
# it might have been set to "Stopping" with Ctrl+C
|
|
bnStatus = BeaconNodeStatus.Running
|
|
|
|
if node.rpcServer != nil:
|
|
node.rpcServer.installRpcHandlers(node)
|
|
node.rpcServer.start()
|
|
|
|
node.installMessageValidators()
|
|
|
|
let
|
|
curSlot = node.beaconClock.now().slotOrZero()
|
|
nextSlot = curSlot + 1 # No earlier than GENESIS_SLOT + 1
|
|
fromNow = saturate(node.beaconClock.fromNow(nextSlot))
|
|
|
|
info "Scheduling first slot action",
|
|
beaconTime = shortLog(node.beaconClock.now()),
|
|
nextSlot = shortLog(nextSlot),
|
|
fromNow = shortLog(fromNow)
|
|
|
|
addTimer(fromNow) do (p: pointer):
|
|
asyncCheck node.onSlotStart(curSlot, nextSlot)
|
|
|
|
node.onSecondLoop = runOnSecondLoop(node)
|
|
node.blockProcessingLoop = node.processor.runQueueProcessingLoop()
|
|
|
|
node.requestManager.start()
|
|
node.startSyncManager()
|
|
|
|
# main event loop
|
|
while bnStatus == BeaconNodeStatus.Running:
|
|
try:
|
|
poll()
|
|
except CatchableError as e:
|
|
debug "Exception in poll()", exc = e.name, err = e.msg
|
|
|
|
# time to say goodbye
|
|
node.stop()
|
|
|
|
var gPidFile: string
|
|
proc createPidFile(filename: string) =
|
|
writeFile filename, $os.getCurrentProcessId()
|
|
gPidFile = filename
|
|
addQuitProc proc {.noconv.} = discard io2.removeFile(gPidFile)
|
|
|
|
proc checkDataDir(conf: BeaconNodeConf) =
|
|
## Checks `conf.dataDir`.
|
|
## If folder exists, prcoedure will check it for access and
|
|
## permissions `0750 (rwxr-x---)`, if folder do not exists it will be created
|
|
## with permissions `0750 (rwxr-x---)`.
|
|
let dataDir = string(conf.dataDir)
|
|
when defined(posix):
|
|
let amask = {AccessFlags.Read, AccessFlags.Write, AccessFlags.Execute}
|
|
if fileAccessible(dataDir, amask):
|
|
let gmask = {UserRead, UserWrite, UserExec, GroupRead, GroupExec}
|
|
let pmask = {OtherRead, OtherWrite, OtherExec, GroupWrite}
|
|
let pres = getPermissionsSet(dataDir)
|
|
if pres.isErr():
|
|
fatal "Could not check data folder permissions",
|
|
data_dir = dataDir, errorCode = $pres.error,
|
|
errorMsg = ioErrorMsg(pres.error)
|
|
quit QuitFailure
|
|
let insecurePermissions = pres.get() * pmask
|
|
if insecurePermissions != {}:
|
|
fatal "Data folder has insecure permissions",
|
|
data_dir = dataDir,
|
|
insecure_permissions = $insecurePermissions,
|
|
current_permissions = pres.get().toString(),
|
|
required_permissions = gmask.toString()
|
|
quit QuitFailure
|
|
else:
|
|
let res = createPath(dataDir, 0o750)
|
|
if res.isErr():
|
|
fatal "Could not create data folder", data_dir = dataDir,
|
|
errorMsg = ioErrorMsg(res.error), errorCode = $res.error
|
|
quit QuitFailure
|
|
elif defined(windows):
|
|
let res = createPath(dataDir, 0o750)
|
|
if res.isErr():
|
|
fatal "Could not create data folder", data_dir = dataDir,
|
|
errorMsg = ioErrorMsg(res.error), errorCode = $res.error
|
|
quit QuitFailure
|
|
else:
|
|
fatal "Unsupported operation system"
|
|
quit QuitFailure
|
|
|
|
proc initializeNetworking(node: BeaconNode) {.async.} =
|
|
await node.network.startListening()
|
|
|
|
let addressFile = node.config.dataDir / "beacon_node.enr"
|
|
writeFile(addressFile, node.network.announcedENR.toURI)
|
|
|
|
await node.network.start()
|
|
|
|
notice "Networking initialized",
|
|
enr = node.network.announcedENR.toURI,
|
|
libp2p = shortLog(node.network.switch.peerInfo)
|
|
|
|
proc start(node: BeaconNode) =
|
|
let
|
|
head = node.chainDag.head
|
|
finalizedHead = node.chainDag.finalizedHead
|
|
genesisTime = node.beaconClock.fromNow(toBeaconTime(Slot 0))
|
|
|
|
notice "Starting beacon node",
|
|
version = fullVersionStr,
|
|
nim = shortNimBanner(),
|
|
timeSinceFinalization =
|
|
finalizedHead.slot.toBeaconTime() -
|
|
node.beaconClock.now(),
|
|
head = shortLog(head),
|
|
finalizedHead = shortLog(finalizedHead),
|
|
SLOTS_PER_EPOCH,
|
|
SECONDS_PER_SLOT,
|
|
SPEC_VERSION,
|
|
dataDir = node.config.dataDir.string
|
|
|
|
if genesisTime.inFuture:
|
|
notice "Waiting for genesis", genesisIn = genesisTime.offset
|
|
|
|
waitFor node.initializeNetworking()
|
|
node.run()
|
|
|
|
func formatGwei(amount: uint64): string =
|
|
# TODO This is implemented in a quite a silly way.
|
|
# Better routines for formatting decimal numbers
|
|
# should exists somewhere else.
|
|
let
|
|
eth = amount div 1000000000
|
|
remainder = amount mod 1000000000
|
|
|
|
result = $eth
|
|
if remainder != 0:
|
|
result.add '.'
|
|
result.add $remainder
|
|
while result[^1] == '0':
|
|
result.setLen(result.len - 1)
|
|
|
|
when hasPrompt:
|
|
from unicode import Rune
|
|
import prompt
|
|
|
|
func providePromptCompletions*(line: seq[Rune], cursorPos: int): seq[string] =
|
|
# TODO
|
|
# The completions should be generated with the general-purpose command-line
|
|
# parsing API of Confutils
|
|
result = @[]
|
|
|
|
proc processPromptCommands(p: ptr Prompt) {.thread.} =
|
|
while true:
|
|
var cmd = p[].readLine()
|
|
case cmd
|
|
of "quit":
|
|
quit 0
|
|
else:
|
|
p[].writeLine("Unknown command: " & cmd)
|
|
|
|
proc initPrompt(node: BeaconNode) =
|
|
if isatty(stdout) and node.config.statusBarEnabled:
|
|
enableTrueColors()
|
|
|
|
# TODO: nim-prompt seems to have threading issues at the moment
|
|
# which result in sporadic crashes. We should introduce a
|
|
# lock that guards the access to the internal prompt line
|
|
# variable.
|
|
#
|
|
# var p = Prompt.init("nimbus > ", providePromptCompletions)
|
|
# p.useHistoryFile()
|
|
|
|
proc dataResolver(expr: string): string =
|
|
template justified: untyped = node.chainDag.head.atEpochStart(
|
|
node.chainDag.headState.data.data.current_justified_checkpoint.epoch)
|
|
# TODO:
|
|
# We should introduce a general API for resolving dot expressions
|
|
# such as `db.latest_block.slot` or `metrics.connected_peers`.
|
|
# Such an API can be shared between the RPC back-end, CLI tools
|
|
# such as ncli, a potential GraphQL back-end and so on.
|
|
# The status bar feature would allow the user to specify an
|
|
# arbitrary expression that is resolvable through this API.
|
|
case expr.toLowerAscii
|
|
of "connected_peers":
|
|
$(node.connectedPeersCount)
|
|
|
|
of "head_root":
|
|
shortLog(node.chainDag.head.root)
|
|
of "head_epoch":
|
|
$(node.chainDag.head.slot.epoch)
|
|
of "head_epoch_slot":
|
|
$(node.chainDag.head.slot mod SLOTS_PER_EPOCH)
|
|
of "head_slot":
|
|
$(node.chainDag.head.slot)
|
|
|
|
of "justifed_root":
|
|
shortLog(justified.blck.root)
|
|
of "justifed_epoch":
|
|
$(justified.slot.epoch)
|
|
of "justifed_epoch_slot":
|
|
$(justified.slot mod SLOTS_PER_EPOCH)
|
|
of "justifed_slot":
|
|
$(justified.slot)
|
|
|
|
of "finalized_root":
|
|
shortLog(node.chainDag.finalizedHead.blck.root)
|
|
of "finalized_epoch":
|
|
$(node.chainDag.finalizedHead.slot.epoch)
|
|
of "finalized_epoch_slot":
|
|
$(node.chainDag.finalizedHead.slot mod SLOTS_PER_EPOCH)
|
|
of "finalized_slot":
|
|
$(node.chainDag.finalizedHead.slot)
|
|
|
|
of "epoch":
|
|
$node.currentSlot.epoch
|
|
|
|
of "epoch_slot":
|
|
$(node.currentSlot mod SLOTS_PER_EPOCH)
|
|
|
|
of "slot":
|
|
$node.currentSlot
|
|
|
|
of "slots_per_epoch":
|
|
$SLOTS_PER_EPOCH
|
|
|
|
of "slot_trailing_digits":
|
|
var slotStr = $node.currentSlot
|
|
if slotStr.len > 3: slotStr = slotStr[^3..^1]
|
|
slotStr
|
|
|
|
of "attached_validators_balance":
|
|
var balance = uint64(0)
|
|
# TODO slow linear scan!
|
|
for idx, b in node.chainDag.headState.data.data.balances:
|
|
if node.getAttachedValidator(
|
|
node.chainDag.headState.data.data, ValidatorIndex(idx)) != nil:
|
|
balance += b
|
|
formatGwei(balance)
|
|
|
|
of "sync_status":
|
|
if isNil(node.syncManager):
|
|
"pending"
|
|
else:
|
|
if node.syncManager.inProgress:
|
|
node.syncManager.syncStatus
|
|
else:
|
|
"synced"
|
|
else:
|
|
# We ignore typos for now and just render the expression
|
|
# as it was written. TODO: come up with a good way to show
|
|
# an error message to the user.
|
|
"$" & expr
|
|
|
|
var statusBar = StatusBarView.init(
|
|
node.config.statusBarContents,
|
|
dataResolver)
|
|
|
|
when compiles(defaultChroniclesStream.output.writer):
|
|
defaultChroniclesStream.output.writer =
|
|
proc (logLevel: LogLevel, msg: LogOutputStr) {.raises: [Defect].} =
|
|
try:
|
|
# p.hidePrompt
|
|
erase statusBar
|
|
# p.writeLine msg
|
|
stdout.write msg
|
|
render statusBar
|
|
# p.showPrompt
|
|
except Exception as e: # render raises Exception
|
|
logLoggingFailure(cstring(msg), e)
|
|
|
|
proc statusBarUpdatesPollingLoop() {.async.} =
|
|
while true:
|
|
update statusBar
|
|
await sleepAsync(chronos.seconds(1))
|
|
|
|
traceAsyncErrors statusBarUpdatesPollingLoop()
|
|
|
|
# var t: Thread[ptr Prompt]
|
|
# createThread(t, processPromptCommands, addr p)
|
|
|
|
programMain:
|
|
var
|
|
config = makeBannerAndConfig(clientId, BeaconNodeConf)
|
|
# This is ref so we can mutate it (to erase it) after the initial loading.
|
|
stateSnapshotContents: ref string
|
|
|
|
setupLogging(config.logLevel, config.logFile)
|
|
|
|
if config.eth2Network.isSome:
|
|
let metadata = getMetadataForNetwork(config.eth2Network.get)
|
|
config.runtimePreset = metadata.runtimePreset
|
|
|
|
if config.cmd == noCommand:
|
|
for node in metadata.bootstrapNodes:
|
|
config.bootstrapNodes.add node
|
|
|
|
if config.stateSnapshot.isNone and metadata.genesisData.len > 0:
|
|
stateSnapshotContents = newClone metadata.genesisData
|
|
|
|
template checkForIncompatibleOption(flagName, fieldName) =
|
|
# TODO: This will have to be reworked slightly when we introduce config files.
|
|
# We'll need to keep track of the "origin" of the config value, so we can
|
|
# discriminate between values from config files that can be overridden and
|
|
# regular command-line options (that may conflict).
|
|
if config.fieldName.isSome:
|
|
fatal "Invalid CLI arguments specified. You must not specify '--network' and '" & flagName & "' at the same time",
|
|
networkParam = config.eth2Network.get, `flagName` = config.fieldName.get
|
|
quit 1
|
|
|
|
checkForIncompatibleOption "deposit-contract", depositContractAddress
|
|
checkForIncompatibleOption "deposit-contract-block", depositContractDeployedAt
|
|
|
|
config.depositContractAddress = some metadata.depositContractAddress
|
|
config.depositContractDeployedAt = some metadata.depositContractDeployedAt
|
|
else:
|
|
config.runtimePreset = defaultRuntimePreset
|
|
|
|
# Single RNG instance for the application - will be seeded on construction
|
|
# and avoid using system resources (such as urandom) after that
|
|
let rng = keys.newRng()
|
|
|
|
case config.cmd
|
|
of createTestnet:
|
|
checkDataDir(config)
|
|
|
|
let launchPadDeposits = try:
|
|
Json.loadFile(config.testnetDepositsFile.string, seq[LaunchPadDeposit])
|
|
except SerializationError as err:
|
|
error "Invalid LaunchPad deposits file",
|
|
err = formatMsg(err, config.testnetDepositsFile.string)
|
|
quit 1
|
|
|
|
var deposits: seq[Deposit]
|
|
for i in config.firstValidator.int ..< launchPadDeposits.len:
|
|
deposits.add Deposit(data: launchPadDeposits[i] as DepositData)
|
|
|
|
attachMerkleProofs(deposits)
|
|
|
|
let
|
|
startTime = uint64(times.toUnix(times.getTime()) + config.genesisOffset)
|
|
outGenesis = config.outputGenesis.string
|
|
eth1Hash = if config.web3Url.len == 0: eth1BlockHash
|
|
else: (waitFor getEth1BlockHash(config.web3Url, blockId("latest"))).asEth2Digest
|
|
var
|
|
initialState = initialize_beacon_state_from_eth1(
|
|
config.runtimePreset, eth1Hash, startTime, deposits, {skipBlsValidation})
|
|
|
|
# https://github.com/ethereum/eth2.0-pm/tree/6e41fcf383ebeb5125938850d8e9b4e9888389b4/interop/mocked_start#create-genesis-state
|
|
initialState.genesis_time = startTime
|
|
|
|
doAssert initialState.validators.len > 0
|
|
|
|
let outGenesisExt = splitFile(outGenesis).ext
|
|
if cmpIgnoreCase(outGenesisExt, ".json") == 0:
|
|
Json.saveFile(outGenesis, initialState, pretty = true)
|
|
echo "Wrote ", outGenesis
|
|
|
|
let outSszGenesis = outGenesis.changeFileExt "ssz"
|
|
SSZ.saveFile(outSszGenesis, initialState[])
|
|
echo "Wrote ", outSszGenesis
|
|
|
|
let bootstrapFile = config.outputBootstrapFile.string
|
|
if bootstrapFile.len > 0:
|
|
let
|
|
networkKeys = getPersistentNetKeys(rng[], config)
|
|
netMetadata = getPersistentNetMetadata(config)
|
|
bootstrapEnr = enr.Record.init(
|
|
1, # sequence number
|
|
networkKeys.seckey.asEthKey,
|
|
some(config.bootstrapAddress),
|
|
config.bootstrapPort,
|
|
config.bootstrapPort,
|
|
[toFieldPair("eth2", SSZ.encode(enrForkIdFromState initialState[])),
|
|
toFieldPair("attnets", SSZ.encode(netMetadata.attnets))])
|
|
|
|
writeFile(bootstrapFile, bootstrapEnr.tryGet().toURI)
|
|
echo "Wrote ", bootstrapFile
|
|
|
|
of noCommand:
|
|
debug "Launching beacon node",
|
|
version = fullVersionStr,
|
|
bls_backend = $BLS_BACKEND,
|
|
cmdParams = commandLineParams(),
|
|
config
|
|
|
|
checkDataDir(config)
|
|
|
|
createPidFile(config.dataDir.string / "beacon_node.pid")
|
|
|
|
config.createDumpDirs()
|
|
|
|
## Ctrl+C handling
|
|
proc controlCHandler() {.noconv.} =
|
|
when defined(windows):
|
|
# workaround for https://github.com/nim-lang/Nim/issues/4057
|
|
setupForeignThreadGc()
|
|
notice "Shutting down after having received SIGINT"
|
|
bnStatus = BeaconNodeStatus.Stopping
|
|
setControlCHook(controlCHandler)
|
|
|
|
when useInsecureFeatures:
|
|
if config.metricsEnabled:
|
|
let metricsAddress = config.metricsAddress
|
|
notice "Starting metrics HTTP server",
|
|
address = metricsAddress, port = config.metricsPort
|
|
metrics.startHttpServer($metricsAddress, config.metricsPort)
|
|
|
|
var node = waitFor BeaconNode.init(rng, config, stateSnapshotContents)
|
|
if bnStatus == BeaconNodeStatus.Stopping:
|
|
return
|
|
|
|
when hasPrompt:
|
|
initPrompt(node)
|
|
|
|
if node.nickname != "":
|
|
dynamicLogScope(node = node.nickname): node.start()
|
|
else:
|
|
node.start()
|
|
|
|
of deposits:
|
|
case config.depositsCmd
|
|
of DepositsCmd.create:
|
|
var mnemonic: Mnemonic
|
|
defer: burnMem(mnemonic)
|
|
var walletPath: WalletPathPair
|
|
|
|
if config.existingWalletId.isSome:
|
|
let id = config.existingWalletId.get
|
|
let found = keystore_management.findWallet(config, id)
|
|
if found.isOk:
|
|
walletPath = found.get
|
|
else:
|
|
fatal "Unable to find wallet with the specified name/uuid",
|
|
id, err = found.error
|
|
quit 1
|
|
var unlocked = unlockWalletInteractively(walletPath.wallet)
|
|
if unlocked.isOk:
|
|
swap(mnemonic, unlocked.get)
|
|
else:
|
|
# The failure will be reported in `unlockWalletInteractively`.
|
|
quit 1
|
|
else:
|
|
var walletRes = createWalletInteractively(rng[], config)
|
|
if walletRes.isErr:
|
|
fatal "Unable to create wallet", err = walletRes.error
|
|
quit 1
|
|
else:
|
|
swap(mnemonic, walletRes.get.mnemonic)
|
|
walletPath = walletRes.get.walletPath
|
|
|
|
createDir(config.outValidatorsDir)
|
|
createDir(config.outSecretsDir)
|
|
|
|
let deposits = generateDeposits(
|
|
config.runtimePreset,
|
|
rng[],
|
|
mnemonic,
|
|
walletPath.wallet.nextAccount,
|
|
config.totalDeposits,
|
|
config.outValidatorsDir,
|
|
config.outSecretsDir)
|
|
|
|
if deposits.isErr:
|
|
fatal "Failed to generate deposits", err = deposits.error
|
|
quit 1
|
|
|
|
try:
|
|
let depositDataPath = if config.outDepositsFile.isSome:
|
|
config.outDepositsFile.get.string
|
|
else:
|
|
config.outValidatorsDir / "deposit_data-" & $epochTime() & ".json"
|
|
|
|
let launchPadDeposits =
|
|
mapIt(deposits.value, LaunchPadDeposit.init(config.runtimePreset, it))
|
|
|
|
Json.saveFile(depositDataPath, launchPadDeposits)
|
|
notice "Deposit data written", filename = depositDataPath
|
|
|
|
walletPath.wallet.nextAccount += deposits.value.len
|
|
let status = saveWallet(walletPath)
|
|
if status.isErr:
|
|
error "Failed to update wallet file after generating deposits",
|
|
wallet = walletPath.path,
|
|
error = status.error
|
|
quit 1
|
|
except CatchableError as err:
|
|
error "Failed to create launchpad deposit data file", err = err.msg
|
|
quit 1
|
|
|
|
of DepositsCmd.`import`:
|
|
importKeystoresFromDir(
|
|
rng[],
|
|
config.importedDepositsDir.string,
|
|
config.validatorsDir, config.secretsDir)
|
|
|
|
of DepositsCmd.status:
|
|
echo "The status command is not implemented yet"
|
|
quit 1
|
|
|
|
of wallets:
|
|
case config.walletsCmd:
|
|
of WalletsCmd.create:
|
|
var walletRes = createWalletInteractively(rng[], config)
|
|
if walletRes.isErr:
|
|
fatal "Unable to create wallet", err = walletRes.error
|
|
quit 1
|
|
burnMem(walletRes.get.mnemonic)
|
|
|
|
of WalletsCmd.list:
|
|
for kind, walletFile in walkDir(config.walletsDir):
|
|
if kind != pcFile: continue
|
|
let walletRes = loadWallet(walletFile)
|
|
if walletRes.isOk:
|
|
echo walletRes.get.longName
|
|
else:
|
|
warn "Found corrupt wallet file",
|
|
wallet = walletFile, error = walletRes.error
|
|
|
|
of WalletsCmd.restore:
|
|
restoreWalletInteractively(rng[], config)
|