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access_node_builder.go
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access_node_builder.go
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package node_builder
import (
"context"
"errors"
"fmt"
"os"
"path/filepath"
"strings"
"time"
badger "github.com/ipfs/go-ds-badger2"
"github.com/libp2p/go-libp2p/core/host"
"github.com/libp2p/go-libp2p/core/routing"
"github.com/rs/zerolog"
"github.com/spf13/pflag"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials"
"google.golang.org/grpc/credentials/insecure"
"github.com/onflow/flow/protobuf/go/flow/access"
"github.com/onflow/go-bitswap"
"github.com/onflow/flow-go/admin/commands"
stateSyncCommands "github.com/onflow/flow-go/admin/commands/state_synchronization"
storageCommands "github.com/onflow/flow-go/admin/commands/storage"
"github.com/onflow/flow-go/cmd"
"github.com/onflow/flow-go/consensus"
"github.com/onflow/flow-go/consensus/hotstuff"
"github.com/onflow/flow-go/consensus/hotstuff/committees"
"github.com/onflow/flow-go/consensus/hotstuff/notifications"
consensuspubsub "github.com/onflow/flow-go/consensus/hotstuff/notifications/pubsub"
"github.com/onflow/flow-go/consensus/hotstuff/signature"
hotstuffvalidator "github.com/onflow/flow-go/consensus/hotstuff/validator"
"github.com/onflow/flow-go/consensus/hotstuff/verification"
recovery "github.com/onflow/flow-go/consensus/recovery/protocol"
"github.com/onflow/flow-go/crypto"
"github.com/onflow/flow-go/engine/access/ingestion"
pingeng "github.com/onflow/flow-go/engine/access/ping"
"github.com/onflow/flow-go/engine/access/rpc"
"github.com/onflow/flow-go/engine/access/rpc/backend"
"github.com/onflow/flow-go/engine/access/state_stream"
followereng "github.com/onflow/flow-go/engine/common/follower"
"github.com/onflow/flow-go/engine/common/requester"
synceng "github.com/onflow/flow-go/engine/common/synchronization"
"github.com/onflow/flow-go/model/flow"
"github.com/onflow/flow-go/model/flow/filter"
"github.com/onflow/flow-go/module"
"github.com/onflow/flow-go/module/blobs"
"github.com/onflow/flow-go/module/chainsync"
"github.com/onflow/flow-go/module/executiondatasync/execution_data"
execdatacache "github.com/onflow/flow-go/module/executiondatasync/execution_data/cache"
finalizer "github.com/onflow/flow-go/module/finalizer/consensus"
"github.com/onflow/flow-go/module/id"
"github.com/onflow/flow-go/module/mempool/herocache"
"github.com/onflow/flow-go/module/mempool/stdmap"
"github.com/onflow/flow-go/module/metrics"
"github.com/onflow/flow-go/module/metrics/unstaked"
"github.com/onflow/flow-go/module/state_synchronization"
edrequester "github.com/onflow/flow-go/module/state_synchronization/requester"
"github.com/onflow/flow-go/network"
alspmgr "github.com/onflow/flow-go/network/alsp/manager"
netcache "github.com/onflow/flow-go/network/cache"
"github.com/onflow/flow-go/network/channels"
cborcodec "github.com/onflow/flow-go/network/codec/cbor"
"github.com/onflow/flow-go/network/p2p"
"github.com/onflow/flow-go/network/p2p/blob"
"github.com/onflow/flow-go/network/p2p/cache"
"github.com/onflow/flow-go/network/p2p/conduit"
"github.com/onflow/flow-go/network/p2p/connection"
"github.com/onflow/flow-go/network/p2p/dht"
"github.com/onflow/flow-go/network/p2p/middleware"
"github.com/onflow/flow-go/network/p2p/p2pbuilder"
p2pconfig "github.com/onflow/flow-go/network/p2p/p2pbuilder/config"
"github.com/onflow/flow-go/network/p2p/p2pbuilder/inspector"
"github.com/onflow/flow-go/network/p2p/subscription"
"github.com/onflow/flow-go/network/p2p/tracer"
"github.com/onflow/flow-go/network/p2p/translator"
"github.com/onflow/flow-go/network/p2p/unicast/protocols"
relaynet "github.com/onflow/flow-go/network/relay"
"github.com/onflow/flow-go/network/slashing"
"github.com/onflow/flow-go/network/topology"
"github.com/onflow/flow-go/network/validator"
"github.com/onflow/flow-go/state/protocol"
badgerState "github.com/onflow/flow-go/state/protocol/badger"
"github.com/onflow/flow-go/state/protocol/blocktimer"
"github.com/onflow/flow-go/storage"
bstorage "github.com/onflow/flow-go/storage/badger"
"github.com/onflow/flow-go/utils/grpcutils"
)
// AccessNodeBuilder extends cmd.NodeBuilder and declares additional functions needed to bootstrap an Access node.
// The private network allows the staked nodes to communicate among themselves, while the public network allows the
// Observers and an Access node to communicate.
//
// public network private network
// +------------------------+
// | Observer 1 |<--------------------------|
// +------------------------+ v
// +------------------------+ +--------------------+ +------------------------+
// | Observer 2 |<----------------------->| Staked Access Node |<--------------->| All other staked Nodes |
// +------------------------+ +--------------------+ +------------------------+
// +------------------------+ ^
// | Observer 3 |<--------------------------|
// +------------------------+
// AccessNodeConfig defines all the user defined parameters required to bootstrap an access node
// For a node running as a standalone process, the config fields will be populated from the command line params,
// while for a node running as a library, the config fields are expected to be initialized by the caller.
type AccessNodeConfig struct {
supportsObserver bool // True if this is an Access node that supports observers and consensus follower engines
collectionGRPCPort uint
executionGRPCPort uint
pingEnabled bool
nodeInfoFile string
apiRatelimits map[string]int
apiBurstlimits map[string]int
rpcConf rpc.Config
stateStreamConf state_stream.Config
stateStreamFilterConf map[string]int
ExecutionNodeAddress string // deprecated
HistoricalAccessRPCs []access.AccessAPIClient
logTxTimeToFinalized bool
logTxTimeToExecuted bool
logTxTimeToFinalizedExecuted bool
retryEnabled bool
rpcMetricsEnabled bool
executionDataSyncEnabled bool
executionDataDir string
executionDataStartHeight uint64
executionDataConfig edrequester.ExecutionDataConfig
PublicNetworkConfig PublicNetworkConfig
}
type PublicNetworkConfig struct {
// NetworkKey crypto.PublicKey // TODO: do we need a different key for the public network?
BindAddress string
Network network.Network
Metrics module.NetworkMetrics
}
// DefaultAccessNodeConfig defines all the default values for the AccessNodeConfig
func DefaultAccessNodeConfig() *AccessNodeConfig {
homedir, _ := os.UserHomeDir()
return &AccessNodeConfig{
supportsObserver: false,
collectionGRPCPort: 9000,
executionGRPCPort: 9000,
rpcConf: rpc.Config{
UnsecureGRPCListenAddr: "0.0.0.0:9000",
SecureGRPCListenAddr: "0.0.0.0:9001",
HTTPListenAddr: "0.0.0.0:8000",
RESTListenAddr: "",
CollectionAddr: "",
HistoricalAccessAddrs: "",
CollectionClientTimeout: 3 * time.Second,
ExecutionClientTimeout: 3 * time.Second,
ConnectionPoolSize: backend.DefaultConnectionPoolSize,
MaxHeightRange: backend.DefaultMaxHeightRange,
PreferredExecutionNodeIDs: nil,
FixedExecutionNodeIDs: nil,
ArchiveAddressList: nil,
MaxMsgSize: grpcutils.DefaultMaxMsgSize,
},
stateStreamConf: state_stream.Config{
MaxExecutionDataMsgSize: grpcutils.DefaultMaxMsgSize,
ExecutionDataCacheSize: state_stream.DefaultCacheSize,
ClientSendTimeout: state_stream.DefaultSendTimeout,
ClientSendBufferSize: state_stream.DefaultSendBufferSize,
MaxGlobalStreams: state_stream.DefaultMaxGlobalStreams,
EventFilterConfig: state_stream.DefaultEventFilterConfig,
ResponseLimit: state_stream.DefaultResponseLimit,
},
stateStreamFilterConf: nil,
ExecutionNodeAddress: "localhost:9000",
logTxTimeToFinalized: false,
logTxTimeToExecuted: false,
logTxTimeToFinalizedExecuted: false,
pingEnabled: false,
retryEnabled: false,
rpcMetricsEnabled: false,
nodeInfoFile: "",
apiRatelimits: nil,
apiBurstlimits: nil,
PublicNetworkConfig: PublicNetworkConfig{
BindAddress: cmd.NotSet,
Metrics: metrics.NewNoopCollector(),
},
executionDataSyncEnabled: true,
executionDataDir: filepath.Join(homedir, ".flow", "execution_data"),
executionDataStartHeight: 0,
executionDataConfig: edrequester.ExecutionDataConfig{
InitialBlockHeight: 0,
MaxSearchAhead: edrequester.DefaultMaxSearchAhead,
FetchTimeout: edrequester.DefaultFetchTimeout,
MaxFetchTimeout: edrequester.DefaultMaxFetchTimeout,
RetryDelay: edrequester.DefaultRetryDelay,
MaxRetryDelay: edrequester.DefaultMaxRetryDelay,
},
}
}
// FlowAccessNodeBuilder provides the common functionality needed to bootstrap a Flow access node
// It is composed of the FlowNodeBuilder, the AccessNodeConfig and contains all the components and modules needed for the
// access nodes
type FlowAccessNodeBuilder struct {
*cmd.FlowNodeBuilder
*AccessNodeConfig
// components
FollowerState protocol.FollowerState
SyncCore *chainsync.Core
RpcEng *rpc.Engine
FollowerDistributor *consensuspubsub.FollowerDistributor
CollectionRPC access.AccessAPIClient
TransactionTimings *stdmap.TransactionTimings
CollectionsToMarkFinalized *stdmap.Times
CollectionsToMarkExecuted *stdmap.Times
BlocksToMarkExecuted *stdmap.Times
TransactionMetrics *metrics.TransactionCollector
AccessMetrics module.AccessMetrics
PingMetrics module.PingMetrics
Committee hotstuff.DynamicCommittee
Finalized *flow.Header // latest finalized block that the node knows of at startup time
Pending []*flow.Header
FollowerCore module.HotStuffFollower
Validator hotstuff.Validator
ExecutionDataDownloader execution_data.Downloader
ExecutionDataRequester state_synchronization.ExecutionDataRequester
ExecutionDataStore execution_data.ExecutionDataStore
ExecutionDataCache *execdatacache.ExecutionDataCache
// The sync engine participants provider is the libp2p peer store for the access node
// which is not available until after the network has started.
// Hence, a factory function that needs to be called just before creating the sync engine
SyncEngineParticipantsProviderFactory func() module.IdentifierProvider
// engines
IngestEng *ingestion.Engine
RequestEng *requester.Engine
FollowerEng *followereng.ComplianceEngine
SyncEng *synceng.Engine
StateStreamEng *state_stream.Engine
}
func (builder *FlowAccessNodeBuilder) buildFollowerState() *FlowAccessNodeBuilder {
builder.Module("mutable follower state", func(node *cmd.NodeConfig) error {
// For now, we only support state implementations from package badger.
// If we ever support different implementations, the following can be replaced by a type-aware factory
state, ok := node.State.(*badgerState.State)
if !ok {
return fmt.Errorf("only implementations of type badger.State are currently supported but read-only state has type %T", node.State)
}
followerState, err := badgerState.NewFollowerState(
node.Logger,
node.Tracer,
node.ProtocolEvents,
state,
node.Storage.Index,
node.Storage.Payloads,
blocktimer.DefaultBlockTimer,
)
builder.FollowerState = followerState
return err
})
return builder
}
func (builder *FlowAccessNodeBuilder) buildSyncCore() *FlowAccessNodeBuilder {
builder.Module("sync core", func(node *cmd.NodeConfig) error {
syncCore, err := chainsync.New(node.Logger, node.SyncCoreConfig, metrics.NewChainSyncCollector(node.RootChainID), node.RootChainID)
builder.SyncCore = syncCore
return err
})
return builder
}
func (builder *FlowAccessNodeBuilder) buildCommittee() *FlowAccessNodeBuilder {
builder.Component("committee", func(node *cmd.NodeConfig) (module.ReadyDoneAware, error) {
// initialize consensus committee's membership state
// This committee state is for the HotStuff follower, which follows the MAIN CONSENSUS committee
// Note: node.Me.NodeID() is not part of the consensus committee
committee, err := committees.NewConsensusCommittee(node.State, node.Me.NodeID())
node.ProtocolEvents.AddConsumer(committee)
builder.Committee = committee
return committee, err
})
return builder
}
func (builder *FlowAccessNodeBuilder) buildLatestHeader() *FlowAccessNodeBuilder {
builder.Module("latest header", func(node *cmd.NodeConfig) error {
finalized, pending, err := recovery.FindLatest(node.State, node.Storage.Headers)
builder.Finalized, builder.Pending = finalized, pending
return err
})
return builder
}
func (builder *FlowAccessNodeBuilder) buildFollowerCore() *FlowAccessNodeBuilder {
builder.Component("follower core", func(node *cmd.NodeConfig) (module.ReadyDoneAware, error) {
// create a finalizer that will handle updating the protocol
// state when the follower detects newly finalized blocks
final := finalizer.NewFinalizer(node.DB, node.Storage.Headers, builder.FollowerState, node.Tracer)
packer := signature.NewConsensusSigDataPacker(builder.Committee)
// initialize the verifier for the protocol consensus
verifier := verification.NewCombinedVerifier(builder.Committee, packer)
builder.Validator = hotstuffvalidator.New(builder.Committee, verifier)
followerCore, err := consensus.NewFollower(
node.Logger,
node.Storage.Headers,
final,
builder.FollowerDistributor,
node.FinalizedRootBlock.Header,
node.RootQC,
builder.Finalized,
builder.Pending,
)
if err != nil {
return nil, fmt.Errorf("could not initialize follower core: %w", err)
}
builder.FollowerCore = followerCore
return builder.FollowerCore, nil
})
return builder
}
func (builder *FlowAccessNodeBuilder) buildFollowerEngine() *FlowAccessNodeBuilder {
builder.Component("follower engine", func(node *cmd.NodeConfig) (module.ReadyDoneAware, error) {
var heroCacheCollector module.HeroCacheMetrics = metrics.NewNoopCollector()
if node.HeroCacheMetricsEnable {
heroCacheCollector = metrics.FollowerCacheMetrics(node.MetricsRegisterer)
}
core, err := followereng.NewComplianceCore(
node.Logger,
node.Metrics.Mempool,
heroCacheCollector,
builder.FollowerDistributor,
builder.FollowerState,
builder.FollowerCore,
builder.Validator,
builder.SyncCore,
node.Tracer,
)
if err != nil {
return nil, fmt.Errorf("could not create follower core: %w", err)
}
builder.FollowerEng, err = followereng.NewComplianceLayer(
node.Logger,
node.Network,
node.Me,
node.Metrics.Engine,
node.Storage.Headers,
builder.Finalized,
core,
node.ComplianceConfig,
)
if err != nil {
return nil, fmt.Errorf("could not create follower engine: %w", err)
}
builder.FollowerDistributor.AddOnBlockFinalizedConsumer(builder.FollowerEng.OnFinalizedBlock)
return builder.FollowerEng, nil
})
return builder
}
func (builder *FlowAccessNodeBuilder) buildSyncEngine() *FlowAccessNodeBuilder {
builder.Component("sync engine", func(node *cmd.NodeConfig) (module.ReadyDoneAware, error) {
sync, err := synceng.New(
node.Logger,
node.Metrics.Engine,
node.Network,
node.Me,
node.State,
node.Storage.Blocks,
builder.FollowerEng,
builder.SyncCore,
builder.SyncEngineParticipantsProviderFactory(),
)
if err != nil {
return nil, fmt.Errorf("could not create synchronization engine: %w", err)
}
builder.SyncEng = sync
builder.FollowerDistributor.AddFinalizationConsumer(sync)
return builder.SyncEng, nil
})
return builder
}
func (builder *FlowAccessNodeBuilder) BuildConsensusFollower() *FlowAccessNodeBuilder {
builder.
buildFollowerState().
buildSyncCore().
buildCommittee().
buildLatestHeader().
buildFollowerCore().
buildFollowerEngine().
buildSyncEngine()
return builder
}
func (builder *FlowAccessNodeBuilder) BuildExecutionDataRequester() *FlowAccessNodeBuilder {
var ds *badger.Datastore
var bs network.BlobService
var processedBlockHeight storage.ConsumerProgress
var processedNotifications storage.ConsumerProgress
var bsDependable *module.ProxiedReadyDoneAware
var execDataDistributor *edrequester.ExecutionDataDistributor
var execDataCacheBackend *herocache.BlockExecutionData
builder.
AdminCommand("read-execution-data", func(config *cmd.NodeConfig) commands.AdminCommand {
return stateSyncCommands.NewReadExecutionDataCommand(builder.ExecutionDataStore)
}).
Module("execution data datastore and blobstore", func(node *cmd.NodeConfig) error {
datastoreDir := filepath.Join(builder.executionDataDir, "blobstore")
err := os.MkdirAll(datastoreDir, 0700)
if err != nil {
return err
}
ds, err = badger.NewDatastore(datastoreDir, &badger.DefaultOptions)
if err != nil {
return err
}
builder.ShutdownFunc(func() error {
if err := ds.Close(); err != nil {
return fmt.Errorf("could not close execution data datastore: %w", err)
}
return nil
})
return nil
}).
Module("processed block height consumer progress", func(node *cmd.NodeConfig) error {
// uses the datastore's DB
processedBlockHeight = bstorage.NewConsumerProgress(ds.DB, module.ConsumeProgressExecutionDataRequesterBlockHeight)
return nil
}).
Module("processed notifications consumer progress", func(node *cmd.NodeConfig) error {
// uses the datastore's DB
processedNotifications = bstorage.NewConsumerProgress(ds.DB, module.ConsumeProgressExecutionDataRequesterNotification)
return nil
}).
Module("blobservice peer manager dependencies", func(node *cmd.NodeConfig) error {
bsDependable = module.NewProxiedReadyDoneAware()
builder.PeerManagerDependencies.Add(bsDependable)
return nil
}).
Module("execution datastore", func(node *cmd.NodeConfig) error {
blobstore := blobs.NewBlobstore(ds)
builder.ExecutionDataStore = execution_data.NewExecutionDataStore(blobstore, execution_data.DefaultSerializer)
return nil
}).
Component("execution data service", func(node *cmd.NodeConfig) (module.ReadyDoneAware, error) {
opts := []network.BlobServiceOption{
blob.WithBitswapOptions(
// Only allow block requests from staked ENs and ANs
bitswap.WithPeerBlockRequestFilter(
blob.AuthorizedRequester(nil, builder.IdentityProvider, builder.Logger),
),
bitswap.WithTracer(
blob.NewTracer(node.Logger.With().Str("blob_service", channels.ExecutionDataService.String()).Logger()),
),
),
}
var err error
bs, err = node.Network.RegisterBlobService(channels.ExecutionDataService, ds, opts...)
if err != nil {
return nil, fmt.Errorf("could not register blob service: %w", err)
}
// add blobservice into ReadyDoneAware dependency passed to peer manager
// this starts the blob service and configures peer manager to wait for the blobservice
// to be ready before starting
bsDependable.Init(bs)
builder.ExecutionDataDownloader = execution_data.NewDownloader(bs)
return builder.ExecutionDataDownloader, nil
}).
Component("execution data requester", func(node *cmd.NodeConfig) (module.ReadyDoneAware, error) {
// Validation of the start block height needs to be done after loading state
if builder.executionDataStartHeight > 0 {
if builder.executionDataStartHeight <= builder.FinalizedRootBlock.Header.Height {
return nil, fmt.Errorf(
"execution data start block height (%d) must be greater than the root block height (%d)",
builder.executionDataStartHeight, builder.FinalizedRootBlock.Header.Height)
}
latestSeal, err := builder.State.Sealed().Head()
if err != nil {
return nil, fmt.Errorf("failed to get latest sealed height")
}
// Note: since the root block of a spork is also sealed in the root protocol state, the
// latest sealed height is always equal to the root block height. That means that at the
// very beginning of a spork, this check will always fail. Operators should not specify
// an InitialBlockHeight when starting from the beginning of a spork.
if builder.executionDataStartHeight > latestSeal.Height {
return nil, fmt.Errorf(
"execution data start block height (%d) must be less than or equal to the latest sealed block height (%d)",
builder.executionDataStartHeight, latestSeal.Height)
}
// executionDataStartHeight is provided as the first block to sync, but the
// requester expects the initial last processed height, which is the first height - 1
builder.executionDataConfig.InitialBlockHeight = builder.executionDataStartHeight - 1
} else {
builder.executionDataConfig.InitialBlockHeight = builder.FinalizedRootBlock.Header.Height
}
execDataDistributor = edrequester.NewExecutionDataDistributor()
var heroCacheCollector module.HeroCacheMetrics = metrics.NewNoopCollector()
if builder.HeroCacheMetricsEnable {
heroCacheCollector = metrics.AccessNodeExecutionDataCacheMetrics(builder.MetricsRegisterer)
}
execDataCacheBackend = herocache.NewBlockExecutionData(builder.stateStreamConf.ExecutionDataCacheSize, builder.Logger, heroCacheCollector)
// Execution Data cache with a downloader as the backend. This is used by the requester
// to download and cache execution data for each block.
executionDataCache := execdatacache.NewExecutionDataCache(
builder.ExecutionDataDownloader,
builder.Storage.Headers,
builder.Storage.Seals,
builder.Storage.Results,
execDataCacheBackend,
)
builder.ExecutionDataRequester = edrequester.New(
builder.Logger,
metrics.NewExecutionDataRequesterCollector(),
builder.ExecutionDataDownloader,
executionDataCache,
processedBlockHeight,
processedNotifications,
builder.State,
builder.Storage.Headers,
builder.executionDataConfig,
)
builder.FollowerDistributor.AddOnBlockFinalizedConsumer(builder.ExecutionDataRequester.OnBlockFinalized)
builder.ExecutionDataRequester.AddOnExecutionDataReceivedConsumer(execDataDistributor.OnExecutionDataReceived)
return builder.ExecutionDataRequester, nil
})
if builder.stateStreamConf.ListenAddr != "" {
builder.Component("exec state stream engine", func(node *cmd.NodeConfig) (module.ReadyDoneAware, error) {
for key, value := range builder.stateStreamFilterConf {
switch key {
case "EventTypes":
builder.stateStreamConf.MaxEventTypes = value
case "Addresses":
builder.stateStreamConf.MaxAddresses = value
case "Contracts":
builder.stateStreamConf.MaxContracts = value
}
}
builder.stateStreamConf.RpcMetricsEnabled = builder.rpcMetricsEnabled
// Execution Data cache that uses a blobstore as the backend (instead of a downloader)
// This ensures that it simply returns a not found error if the blob doesn't exist
// instead of attempting to download it from the network. It shares a cache backend instance
// with the requester's implementation.
executionDataCache := execdatacache.NewExecutionDataCache(
builder.ExecutionDataStore,
builder.Storage.Headers,
builder.Storage.Seals,
builder.Storage.Results,
execDataCacheBackend,
)
highestAvailableHeight, err := builder.ExecutionDataRequester.HighestConsecutiveHeight()
if err != nil {
return nil, fmt.Errorf("could not get highest consecutive height: %w", err)
}
stateStreamEng, err := state_stream.NewEng(
node.Logger,
builder.stateStreamConf,
builder.ExecutionDataStore,
executionDataCache,
node.State,
node.Storage.Headers,
node.Storage.Seals,
node.Storage.Results,
node.RootChainID,
builder.executionDataConfig.InitialBlockHeight,
highestAvailableHeight,
builder.apiRatelimits,
builder.apiBurstlimits,
)
if err != nil {
return nil, fmt.Errorf("could not create state stream engine: %w", err)
}
builder.StateStreamEng = stateStreamEng
execDataDistributor.AddOnExecutionDataReceivedConsumer(builder.StateStreamEng.OnExecutionData)
return builder.StateStreamEng, nil
})
}
return builder
}
func FlowAccessNode(nodeBuilder *cmd.FlowNodeBuilder) *FlowAccessNodeBuilder {
dist := consensuspubsub.NewFollowerDistributor()
dist.AddProposalViolationConsumer(notifications.NewSlashingViolationsConsumer(nodeBuilder.Logger))
return &FlowAccessNodeBuilder{
AccessNodeConfig: DefaultAccessNodeConfig(),
FlowNodeBuilder: nodeBuilder,
FollowerDistributor: dist,
}
}
func (builder *FlowAccessNodeBuilder) ParseFlags() error {
builder.BaseFlags()
builder.extraFlags()
return builder.ParseAndPrintFlags()
}
func (builder *FlowAccessNodeBuilder) extraFlags() {
builder.ExtraFlags(func(flags *pflag.FlagSet) {
defaultConfig := DefaultAccessNodeConfig()
flags.UintVar(&builder.collectionGRPCPort, "collection-ingress-port", defaultConfig.collectionGRPCPort, "the grpc ingress port for all collection nodes")
flags.UintVar(&builder.executionGRPCPort, "execution-ingress-port", defaultConfig.executionGRPCPort, "the grpc ingress port for all execution nodes")
flags.StringVarP(&builder.rpcConf.UnsecureGRPCListenAddr, "rpc-addr", "r", defaultConfig.rpcConf.UnsecureGRPCListenAddr, "the address the unsecured gRPC server listens on")
flags.StringVar(&builder.rpcConf.SecureGRPCListenAddr, "secure-rpc-addr", defaultConfig.rpcConf.SecureGRPCListenAddr, "the address the secure gRPC server listens on")
flags.StringVar(&builder.stateStreamConf.ListenAddr, "state-stream-addr", defaultConfig.stateStreamConf.ListenAddr, "the address the state stream server listens on (if empty the server will not be started)")
flags.StringVarP(&builder.rpcConf.HTTPListenAddr, "http-addr", "h", defaultConfig.rpcConf.HTTPListenAddr, "the address the http proxy server listens on")
flags.StringVar(&builder.rpcConf.RESTListenAddr, "rest-addr", defaultConfig.rpcConf.RESTListenAddr, "the address the REST server listens on (if empty the REST server will not be started)")
flags.StringVarP(&builder.rpcConf.CollectionAddr, "static-collection-ingress-addr", "", defaultConfig.rpcConf.CollectionAddr, "the address (of the collection node) to send transactions to")
flags.StringVarP(&builder.ExecutionNodeAddress, "script-addr", "s", defaultConfig.ExecutionNodeAddress, "the address (of the execution node) forward the script to")
flags.StringSliceVar(&builder.rpcConf.ArchiveAddressList, "archive-address-list", defaultConfig.rpcConf.ArchiveAddressList, "the list of address of the archive node to forward the script queries to")
flags.StringVarP(&builder.rpcConf.HistoricalAccessAddrs, "historical-access-addr", "", defaultConfig.rpcConf.HistoricalAccessAddrs, "comma separated rpc addresses for historical access nodes")
flags.DurationVar(&builder.rpcConf.CollectionClientTimeout, "collection-client-timeout", defaultConfig.rpcConf.CollectionClientTimeout, "grpc client timeout for a collection node")
flags.DurationVar(&builder.rpcConf.ExecutionClientTimeout, "execution-client-timeout", defaultConfig.rpcConf.ExecutionClientTimeout, "grpc client timeout for an execution node")
flags.UintVar(&builder.rpcConf.ConnectionPoolSize, "connection-pool-size", defaultConfig.rpcConf.ConnectionPoolSize, "maximum number of connections allowed in the connection pool, size of 0 disables the connection pooling, and anything less than the default size will be overridden to use the default size")
flags.UintVar(&builder.rpcConf.MaxMsgSize, "rpc-max-message-size", grpcutils.DefaultMaxMsgSize, "the maximum message size in bytes for messages sent or received over grpc")
flags.UintVar(&builder.rpcConf.MaxHeightRange, "rpc-max-height-range", defaultConfig.rpcConf.MaxHeightRange, "maximum size for height range requests")
flags.StringSliceVar(&builder.rpcConf.PreferredExecutionNodeIDs, "preferred-execution-node-ids", defaultConfig.rpcConf.PreferredExecutionNodeIDs, "comma separated list of execution nodes ids to choose from when making an upstream call e.g. b4a4dbdcd443d...,fb386a6a... etc.")
flags.StringSliceVar(&builder.rpcConf.FixedExecutionNodeIDs, "fixed-execution-node-ids", defaultConfig.rpcConf.FixedExecutionNodeIDs, "comma separated list of execution nodes ids to choose from when making an upstream call if no matching preferred execution id is found e.g. b4a4dbdcd443d...,fb386a6a... etc.")
flags.BoolVar(&builder.logTxTimeToFinalized, "log-tx-time-to-finalized", defaultConfig.logTxTimeToFinalized, "log transaction time to finalized")
flags.BoolVar(&builder.logTxTimeToExecuted, "log-tx-time-to-executed", defaultConfig.logTxTimeToExecuted, "log transaction time to executed")
flags.BoolVar(&builder.logTxTimeToFinalizedExecuted, "log-tx-time-to-finalized-executed", defaultConfig.logTxTimeToFinalizedExecuted, "log transaction time to finalized and executed")
flags.BoolVar(&builder.pingEnabled, "ping-enabled", defaultConfig.pingEnabled, "whether to enable the ping process that pings all other peers and report the connectivity to metrics")
flags.BoolVar(&builder.retryEnabled, "retry-enabled", defaultConfig.retryEnabled, "whether to enable the retry mechanism at the access node level")
flags.BoolVar(&builder.rpcMetricsEnabled, "rpc-metrics-enabled", defaultConfig.rpcMetricsEnabled, "whether to enable the rpc metrics")
flags.StringVarP(&builder.nodeInfoFile, "node-info-file", "", defaultConfig.nodeInfoFile, "full path to a json file which provides more details about nodes when reporting its reachability metrics")
flags.StringToIntVar(&builder.apiRatelimits, "api-rate-limits", defaultConfig.apiRatelimits, "per second rate limits for Access API methods e.g. Ping=300,GetTransaction=500 etc.")
flags.StringToIntVar(&builder.apiBurstlimits, "api-burst-limits", defaultConfig.apiBurstlimits, "burst limits for Access API methods e.g. Ping=100,GetTransaction=100 etc.")
flags.BoolVar(&builder.supportsObserver, "supports-observer", defaultConfig.supportsObserver, "true if this staked access node supports observer or follower connections")
flags.StringVar(&builder.PublicNetworkConfig.BindAddress, "public-network-address", defaultConfig.PublicNetworkConfig.BindAddress, "staked access node's public network bind address")
// ExecutionDataRequester config
flags.BoolVar(&builder.executionDataSyncEnabled, "execution-data-sync-enabled", defaultConfig.executionDataSyncEnabled, "whether to enable the execution data sync protocol")
flags.StringVar(&builder.executionDataDir, "execution-data-dir", defaultConfig.executionDataDir, "directory to use for Execution Data database")
flags.Uint64Var(&builder.executionDataStartHeight, "execution-data-start-height", defaultConfig.executionDataStartHeight, "height of first block to sync execution data from when starting with an empty Execution Data database")
flags.Uint64Var(&builder.executionDataConfig.MaxSearchAhead, "execution-data-max-search-ahead", defaultConfig.executionDataConfig.MaxSearchAhead, "max number of heights to search ahead of the lowest outstanding execution data height")
flags.DurationVar(&builder.executionDataConfig.FetchTimeout, "execution-data-fetch-timeout", defaultConfig.executionDataConfig.FetchTimeout, "initial timeout to use when fetching execution data from the network. timeout increases using an incremental backoff until execution-data-max-fetch-timeout. e.g. 30s")
flags.DurationVar(&builder.executionDataConfig.MaxFetchTimeout, "execution-data-max-fetch-timeout", defaultConfig.executionDataConfig.MaxFetchTimeout, "maximum timeout to use when fetching execution data from the network e.g. 300s")
flags.DurationVar(&builder.executionDataConfig.RetryDelay, "execution-data-retry-delay", defaultConfig.executionDataConfig.RetryDelay, "initial delay for exponential backoff when fetching execution data fails e.g. 10s")
flags.DurationVar(&builder.executionDataConfig.MaxRetryDelay, "execution-data-max-retry-delay", defaultConfig.executionDataConfig.MaxRetryDelay, "maximum delay for exponential backoff when fetching execution data fails e.g. 5m")
// Execution State Streaming API
flags.Uint32Var(&builder.stateStreamConf.ExecutionDataCacheSize, "execution-data-cache-size", defaultConfig.stateStreamConf.ExecutionDataCacheSize, "block execution data cache size")
flags.Uint32Var(&builder.stateStreamConf.MaxGlobalStreams, "state-stream-global-max-streams", defaultConfig.stateStreamConf.MaxGlobalStreams, "global maximum number of concurrent streams")
flags.UintVar(&builder.stateStreamConf.MaxExecutionDataMsgSize, "state-stream-max-message-size", defaultConfig.stateStreamConf.MaxExecutionDataMsgSize, "maximum size for a gRPC message containing block execution data")
flags.StringToIntVar(&builder.stateStreamFilterConf, "state-stream-event-filter-limits", defaultConfig.stateStreamFilterConf, "event filter limits for ExecutionData SubscribeEvents API e.g. EventTypes=100,Addresses=100,Contracts=100 etc.")
flags.DurationVar(&builder.stateStreamConf.ClientSendTimeout, "state-stream-send-timeout", defaultConfig.stateStreamConf.ClientSendTimeout, "maximum wait before timing out while sending a response to a streaming client e.g. 30s")
flags.UintVar(&builder.stateStreamConf.ClientSendBufferSize, "state-stream-send-buffer-size", defaultConfig.stateStreamConf.ClientSendBufferSize, "maximum number of responses to buffer within a stream")
flags.Float64Var(&builder.stateStreamConf.ResponseLimit, "state-stream-response-limit", defaultConfig.stateStreamConf.ResponseLimit, "max number of responses per second to send over streaming endpoints. this helps manage resources consumed by each client querying data not in the cache e.g. 3 or 0.5. 0 means no limit")
}).ValidateFlags(func() error {
if builder.supportsObserver && (builder.PublicNetworkConfig.BindAddress == cmd.NotSet || builder.PublicNetworkConfig.BindAddress == "") {
return errors.New("public-network-address must be set if supports-observer is true")
}
if builder.executionDataSyncEnabled {
if builder.executionDataConfig.FetchTimeout <= 0 {
return errors.New("execution-data-fetch-timeout must be greater than 0")
}
if builder.executionDataConfig.MaxFetchTimeout < builder.executionDataConfig.FetchTimeout {
return errors.New("execution-data-max-fetch-timeout must be greater than execution-data-fetch-timeout")
}
if builder.executionDataConfig.RetryDelay <= 0 {
return errors.New("execution-data-retry-delay must be greater than 0")
}
if builder.executionDataConfig.MaxRetryDelay < builder.executionDataConfig.RetryDelay {
return errors.New("execution-data-max-retry-delay must be greater than or equal to execution-data-retry-delay")
}
if builder.executionDataConfig.MaxSearchAhead == 0 {
return errors.New("execution-data-max-search-ahead must be greater than 0")
}
}
if builder.stateStreamConf.ListenAddr != "" {
if builder.stateStreamConf.ExecutionDataCacheSize == 0 {
return errors.New("execution-data-cache-size must be greater than 0")
}
if builder.stateStreamConf.ClientSendBufferSize == 0 {
return errors.New("state-stream-send-buffer-size must be greater than 0")
}
if len(builder.stateStreamFilterConf) > 3 {
return errors.New("state-stream-event-filter-limits must have at most 3 keys (EventTypes, Addresses, Contracts)")
}
for key, value := range builder.stateStreamFilterConf {
switch key {
case "EventTypes", "Addresses", "Contracts":
if value <= 0 {
return fmt.Errorf("state-stream-event-filter-limits %s must be greater than 0", key)
}
default:
return errors.New("state-stream-event-filter-limits may only contain the keys EventTypes, Addresses, Contracts")
}
}
if builder.stateStreamConf.ResponseLimit < 0 {
return errors.New("state-stream-response-limit must be greater than or equal to 0")
}
}
return nil
})
}
// initNetwork creates the network.Network implementation with the given metrics, middleware, initial list of network
// participants and topology used to choose peers from the list of participants. The list of participants can later be
// updated by calling network.SetIDs.
func (builder *FlowAccessNodeBuilder) initNetwork(nodeID module.Local,
networkMetrics module.NetworkCoreMetrics,
middleware network.Middleware,
topology network.Topology,
receiveCache *netcache.ReceiveCache,
) (*p2p.Network, error) {
net, err := p2p.NewNetwork(&p2p.NetworkConfig{
Logger: builder.Logger,
Codec: cborcodec.NewCodec(),
Me: nodeID,
MiddlewareFactory: func() (network.Middleware, error) { return builder.Middleware, nil },
Topology: topology,
SubscriptionManager: subscription.NewChannelSubscriptionManager(middleware),
Metrics: networkMetrics,
IdentityProvider: builder.IdentityProvider,
ReceiveCache: receiveCache,
ConduitFactory: conduit.NewDefaultConduitFactory(),
AlspCfg: &alspmgr.MisbehaviorReportManagerConfig{
Logger: builder.Logger,
SpamRecordCacheSize: builder.AlspConfig.SpamRecordCacheSize,
SpamReportQueueSize: builder.AlspConfig.SpamReportQueueSize,
DisablePenalty: builder.AlspConfig.DisablePenalty,
HeartBeatInterval: builder.AlspConfig.HearBeatInterval,
AlspMetrics: builder.Metrics.Network,
NetworkType: network.PublicNetwork,
HeroCacheMetricsFactory: builder.HeroCacheMetricsFactory(),
},
})
if err != nil {
return nil, fmt.Errorf("could not initialize network: %w", err)
}
return net, nil
}
func publicNetworkMsgValidators(log zerolog.Logger, idProvider module.IdentityProvider, selfID flow.Identifier) []network.MessageValidator {
return []network.MessageValidator{
// filter out messages sent by this node itself
validator.ValidateNotSender(selfID),
validator.NewAnyValidator(
// message should be either from a valid staked node
validator.NewOriginValidator(
id.NewIdentityFilterIdentifierProvider(filter.IsValidCurrentEpochParticipant, idProvider),
),
// or the message should be specifically targeted for this node
validator.ValidateTarget(log, selfID),
),
}
}
func (builder *FlowAccessNodeBuilder) InitIDProviders() {
builder.Module("id providers", func(node *cmd.NodeConfig) error {
idCache, err := cache.NewProtocolStateIDCache(node.Logger, node.State, node.ProtocolEvents)
if err != nil {
return fmt.Errorf("could not initialize ProtocolStateIDCache: %w", err)
}
builder.IDTranslator = translator.NewHierarchicalIDTranslator(idCache, translator.NewPublicNetworkIDTranslator())
builder.NodeDisallowListDistributor = cmd.BuildDisallowListNotificationDisseminator(builder.DisallowListNotificationCacheSize, builder.MetricsRegisterer, builder.Logger, builder.MetricsEnabled)
// The following wrapper allows to disallow-list byzantine nodes via an admin command:
// the wrapper overrides the 'Ejected' flag of disallow-listed nodes to true
disallowListWrapper, err := cache.NewNodeBlocklistWrapper(idCache, node.DB, builder.NodeDisallowListDistributor)
if err != nil {
return fmt.Errorf("could not initialize NodeBlockListWrapper: %w", err)
}
builder.IdentityProvider = disallowListWrapper
// register the wrapper for dynamic configuration via admin command
err = node.ConfigManager.RegisterIdentifierListConfig("network-id-provider-blocklist",
disallowListWrapper.GetBlocklist, disallowListWrapper.Update)
if err != nil {
return fmt.Errorf("failed to register blocklist with config manager: %w", err)
}
builder.SyncEngineParticipantsProviderFactory = func() module.IdentifierProvider {
return id.NewIdentityFilterIdentifierProvider(
filter.And(
filter.HasRole(flow.RoleConsensus),
filter.Not(filter.HasNodeID(node.Me.NodeID())),
p2p.NotEjectedFilter,
),
builder.IdentityProvider,
)
}
return nil
})
builder.Component("disallow list notification distributor", func(node *cmd.NodeConfig) (module.ReadyDoneAware, error) {
// distributor is returned as a component to be started and stopped.
return builder.NodeDisallowListDistributor, nil
})
}
func (builder *FlowAccessNodeBuilder) Initialize() error {
builder.InitIDProviders()
builder.EnqueueResolver()
// enqueue the regular network
builder.EnqueueNetworkInit()
builder.AdminCommand("get-transactions", func(conf *cmd.NodeConfig) commands.AdminCommand {
return storageCommands.NewGetTransactionsCommand(conf.State, conf.Storage.Payloads, conf.Storage.Collections)
})
// if this is an access node that supports public followers, enqueue the public network
if builder.supportsObserver {
builder.enqueuePublicNetworkInit()
builder.enqueueRelayNetwork()
}
builder.EnqueuePingService()
builder.EnqueueMetricsServerInit()
if err := builder.RegisterBadgerMetrics(); err != nil {
return err
}
builder.EnqueueTracer()
builder.PreInit(cmd.DynamicStartPreInit)
builder.ValidateRootSnapshot(badgerState.ValidRootSnapshotContainsEntityExpiryRange)
return nil
}
func (builder *FlowAccessNodeBuilder) enqueueRelayNetwork() {
builder.Component("relay network", func(node *cmd.NodeConfig) (module.ReadyDoneAware, error) {
relayNet := relaynet.NewRelayNetwork(
node.Network,
builder.AccessNodeConfig.PublicNetworkConfig.Network,
node.Logger,
map[channels.Channel]channels.Channel{
channels.ReceiveBlocks: channels.PublicReceiveBlocks,
},
)
node.Network = relayNet
return relayNet, nil
})
}
func (builder *FlowAccessNodeBuilder) Build() (cmd.Node, error) {
builder.
BuildConsensusFollower().
Module("collection node client", func(node *cmd.NodeConfig) error {
// collection node address is optional (if not specified, collection nodes will be chosen at random)
if strings.TrimSpace(builder.rpcConf.CollectionAddr) == "" {
node.Logger.Info().Msg("using a dynamic collection node address")
return nil
}
node.Logger.Info().
Str("collection_node", builder.rpcConf.CollectionAddr).
Msg("using the static collection node address")
collectionRPCConn, err := grpc.Dial(
builder.rpcConf.CollectionAddr,
grpc.WithDefaultCallOptions(grpc.MaxCallRecvMsgSize(int(builder.rpcConf.MaxMsgSize))),
grpc.WithTransportCredentials(insecure.NewCredentials()),
backend.WithClientUnaryInterceptor(builder.rpcConf.CollectionClientTimeout))
if err != nil {
return err
}
builder.CollectionRPC = access.NewAccessAPIClient(collectionRPCConn)
return nil
}).
Module("historical access node clients", func(node *cmd.NodeConfig) error {
addrs := strings.Split(builder.rpcConf.HistoricalAccessAddrs, ",")
for _, addr := range addrs {
if strings.TrimSpace(addr) == "" {
continue
}
node.Logger.Info().Str("access_nodes", addr).Msg("historical access node addresses")
historicalAccessRPCConn, err := grpc.Dial(
addr,
grpc.WithDefaultCallOptions(grpc.MaxCallRecvMsgSize(int(builder.rpcConf.MaxMsgSize))),
grpc.WithTransportCredentials(insecure.NewCredentials()))
if err != nil {
return err
}
builder.HistoricalAccessRPCs = append(builder.HistoricalAccessRPCs, access.NewAccessAPIClient(historicalAccessRPCConn))
}
return nil
}).
Module("transaction timing mempools", func(node *cmd.NodeConfig) error {
var err error
builder.TransactionTimings, err = stdmap.NewTransactionTimings(1500 * 300) // assume 1500 TPS * 300 seconds
if err != nil {
return err
}
builder.CollectionsToMarkFinalized, err = stdmap.NewTimes(50 * 300) // assume 50 collection nodes * 300 seconds
if err != nil {
return err
}
builder.CollectionsToMarkExecuted, err = stdmap.NewTimes(50 * 300) // assume 50 collection nodes * 300 seconds
if err != nil {
return err
}
builder.BlocksToMarkExecuted, err = stdmap.NewTimes(1 * 300) // assume 1 block per second * 300 seconds
return err
}).
Module("transaction metrics", func(node *cmd.NodeConfig) error {
builder.TransactionMetrics = metrics.NewTransactionCollector(
node.Logger,
builder.TransactionTimings,
builder.logTxTimeToFinalized,
builder.logTxTimeToExecuted,
builder.logTxTimeToFinalizedExecuted,
)
return nil
}).
Module("access metrics", func(node *cmd.NodeConfig) error {
builder.AccessMetrics = metrics.NewAccessCollector(
metrics.WithTransactionMetrics(builder.TransactionMetrics),
metrics.WithBackendScriptsMetrics(builder.TransactionMetrics),
)
return nil
}).
Module("ping metrics", func(node *cmd.NodeConfig) error {
builder.PingMetrics = metrics.NewPingCollector()
return nil
}).
Module("server certificate", func(node *cmd.NodeConfig) error {
// generate the server certificate that will be served by the GRPC server
x509Certificate, err := grpcutils.X509Certificate(node.NetworkKey)
if err != nil {
return err
}
tlsConfig := grpcutils.DefaultServerTLSConfig(x509Certificate)
builder.rpcConf.TransportCredentials = credentials.NewTLS(tlsConfig)
return nil
}).
Component("RPC engine", func(node *cmd.NodeConfig) (module.ReadyDoneAware, error) {
engineBuilder, err := rpc.NewBuilder(
node.Logger,
node.State,
builder.rpcConf,
builder.CollectionRPC,
builder.HistoricalAccessRPCs,
node.Storage.Blocks,