p2pnode

package
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 Go to latest Published: Feb 22, 2024 License: AGPL-3.0 Imports: 30 Imported by: 1

Documentation

Overview

Package p2pnode encapsulates the libp2p library

Index

Constants

View Source 
const (
	// DefaultMaxPubSubMsgSize defines the maximum message size in publish and multicast modes
	DefaultMaxPubSubMsgSize = 5 * mb // 5 mb

)

Variables

This section is empty.

Functions

func NewGossipSubAdapter 

func NewGossipSubAdapter(ctx context.Context,
	logger zerolog.Logger,
	h host.Host,
	cfg p2p.PubSubAdapterConfig,
	clusterChangeConsumer p2p.CollectionClusterChangesConsumer) (p2p.PubSubAdapter, error)

Types

type GossipSubAdapter 

type GossipSubAdapter struct {
	component.Component
	// contains filtered or unexported fields
}

GossipSubAdapter is a wrapper around the libp2p GossipSub implementation that implements the PubSubAdapter interface for the Flow network.

func (*GossipSubAdapter) ActiveClustersChanged 

func (g *GossipSubAdapter) ActiveClustersChanged(lst flow.ChainIDList)

ActiveClustersChanged is called when the active clusters of collection nodes changes. GossipSubAdapter implements this method to forward the call to the clusterChangeConsumer (rpc inspector), which will then update the cluster state of the rpc inspector. Args: - lst: the list of active clusters Returns: - void

func (*GossipSubAdapter) GetLocalMeshPeers 

func (g *GossipSubAdapter) GetLocalMeshPeers(topic channels.Topic) []peer.ID

GetLocalMeshPeers returns the list of peers in the local mesh for the given topic. Args: - topic: the topic. Returns: - []peer.ID: the list of peers in the local mesh for the given topic.

func (*GossipSubAdapter) GetTopics 

func (g *GossipSubAdapter) GetTopics() []string

func (*GossipSubAdapter) Join 

func (g *GossipSubAdapter) Join(topic string) (p2p.Topic, error)

func (*GossipSubAdapter) ListPeers 

func (g *GossipSubAdapter) ListPeers(topic string) []peer.ID

func (*GossipSubAdapter) PeerScoreExposer 

func (g *GossipSubAdapter) PeerScoreExposer() p2p.PeerScoreExposer

PeerScoreExposer returns the peer score exposer for the gossipsub adapter. The exposer is a read-only interface for querying peer scores and returns the local scoring table of the underlying gossipsub node. The exposer is only available if the gossipsub adapter was configured with a score tracer. If the gossipsub adapter was not configured with a score tracer, the exposer will be nil. Args: 

None.

Returns: 

The peer score exposer for the gossipsub adapter.

func (*GossipSubAdapter) RegisterTopicValidator 

func (g *GossipSubAdapter) RegisterTopicValidator(topic string, topicValidator p2p.TopicValidatorFunc) error

func (*GossipSubAdapter) UnregisterTopicValidator 

func (g *GossipSubAdapter) UnregisterTopicValidator(topic string) error

type GossipSubAdapterConfig 

type GossipSubAdapterConfig struct {
	// contains filtered or unexported fields
}

GossipSubAdapterConfig is a wrapper around libp2p pubsub options that implements the PubSubAdapterConfig interface for the Flow network.

func NewGossipSubAdapterConfig 

func NewGossipSubAdapterConfig(base *p2p.BasePubSubAdapterConfig) *GossipSubAdapterConfig

NewGossipSubAdapterConfig creates a new GossipSubAdapterConfig with the default options. Args:

  • base: the base pubsub adapter config

Returns:

  • a new GossipSubAdapterConfig

func (*GossipSubAdapterConfig) Build 

func (g *GossipSubAdapterConfig) Build() []pubsub.Option

Build returns the libp2p pubsub options. Args:

  • None

Returns:

  • []pubsub.Option: the libp2p pubsub options.

Build is idempotent.

func (*GossipSubAdapterConfig) InspectorSuiteComponent 

func (g *GossipSubAdapterConfig) InspectorSuiteComponent() component.Component

InspectorSuiteComponent returns the component that manages the lifecycle of the inspector suite. This is used to start and stop the inspector suite by the PubSubAdapter. Args:

  • None

Returns:

  • component.Component: the component that manages the lifecycle of the inspector suite.

func (*GossipSubAdapterConfig) PubSubTracer 

func (g *GossipSubAdapterConfig) PubSubTracer() p2p.PubSubTracer

PubSubTracer returns the tracer for the pubsub. Args: - None Returns: - p2p.PubSubTracer: the tracer for the pubsub.

func (*GossipSubAdapterConfig) ScoreTracer 

func (g *GossipSubAdapterConfig) ScoreTracer() p2p.PeerScoreTracer

ScoreTracer returns the tracer for the peer score. Args:

  • None

Returns: - p2p.PeerScoreTracer: the tracer for the peer score.

func (*GossipSubAdapterConfig) ScoringComponent 

func (g *GossipSubAdapterConfig) ScoringComponent() component.Component

func (*GossipSubAdapterConfig) TopicScoreParamFunc 

func (g *GossipSubAdapterConfig) TopicScoreParamFunc() (func(topic *pubsub.Topic) *pubsub.TopicScoreParams, bool)

TopicScoreParamFunc returns the topic score param function. This function is used to get the topic score params for a topic. The topic score params are used to set the topic parameters in GossipSub at the time of joining the topic. Args:

  • None

Returns: - func(topic *pubsub.Topic) *pubsub.TopicScoreParams: the topic score param function if set, nil otherwise. - bool: true if the topic score param function is set, false otherwise.

func (*GossipSubAdapterConfig) WithInspectorSuite 

func (g *GossipSubAdapterConfig) WithInspectorSuite(suite p2p.GossipSubInspectorSuite)

WithInspectorSuite adds an inspector suite option to the config. Args: - suite: the inspector suite to use Returns: -None

func (*GossipSubAdapterConfig) WithMessageIdFunction 

func (g *GossipSubAdapterConfig) WithMessageIdFunction(f func([]byte) string)

WithMessageIdFunction adds a message ID function option to the config. Args: - f: the message ID function to use Returns: -None

func (*GossipSubAdapterConfig) WithRoutingDiscovery 

func (g *GossipSubAdapterConfig) WithRoutingDiscovery(routing routing.ContentRouting)

WithRoutingDiscovery adds a routing discovery option to the config. Args:

  • routing: the routing discovery to use

Returns: -None

func (*GossipSubAdapterConfig) WithScoreOption 

func (g *GossipSubAdapterConfig) WithScoreOption(option p2p.ScoreOptionBuilder)

WithScoreOption adds a score option to the config. Args: - option: the score option to use Returns: -None

func (*GossipSubAdapterConfig) WithScoreTracer 

func (g *GossipSubAdapterConfig) WithScoreTracer(tracer p2p.PeerScoreTracer)

WithScoreTracer sets the tracer for the peer score. Args:

  • tracer: the tracer for the peer score.

Returns:

  • None

func (*GossipSubAdapterConfig) WithSubscriptionFilter 

func (g *GossipSubAdapterConfig) WithSubscriptionFilter(filter p2p.SubscriptionFilter)

WithSubscriptionFilter adds a subscription filter option to the config. Args:

  • filter: the subscription filter to use

Returns: -None

func (*GossipSubAdapterConfig) WithTracer 

func (g *GossipSubAdapterConfig) WithTracer(tracer p2p.PubSubTracer)

WithTracer adds a tracer option to the config. Args: - tracer: the tracer to use Returns: -None

type GossipSubTopic 

type GossipSubTopic struct {
	// contains filtered or unexported fields
}

GossipSubTopic is a wrapper around libp2p pubsub topics that implements the PubSubTopic interface for the Flow network.

func NewGossipSubTopic 

func NewGossipSubTopic(topic *pubsub.Topic) *GossipSubTopic

func (*GossipSubTopic) Close 

func (g *GossipSubTopic) Close() error

func (*GossipSubTopic) Publish 

func (g *GossipSubTopic) Publish(ctx context.Context, bytes []byte) error

func (*GossipSubTopic) String 

func (g *GossipSubTopic) String() string

func (*GossipSubTopic) Subscribe 

func (g *GossipSubTopic) Subscribe() (p2p.Subscription, error)

type Node 

type Node struct {
	component.Component
	sync.RWMutex
	// contains filtered or unexported fields
}

Node is a wrapper around the LibP2P host.

func NewNode 

func NewNode(cfg *p2p.NodeConfig) (*Node, error)

NewNode creates a new libp2p node and sets its parameters. Args:

  • cfg: The configuration for the libp2p node.

Returns:

  • *Node: The created libp2p node.

- error: An error, if any occurred during the process. This includes failure in creating the node. The returned error is irrecoverable, and the node cannot be used.

func (*Node) ActiveClustersChanged 

func (n *Node) ActiveClustersChanged(list flow.ChainIDList)

ActiveClustersChanged is called when the active clusters list of the collection clusters has changed. The LibP2PNode implementation directly calls the ActiveClustersChanged method of the pubsub implementation, as the pubsub implementation is responsible for the actual handling of the event. Args: - list: the new active clusters list. Returns: - none

func (*Node) ConnectToPeer 

func (n *Node) ConnectToPeer(ctx context.Context, peerInfo peer.AddrInfo) error

ConnectToPeerAddrInfo adds a peer to this node by adding it to this node's peerstore and connecting to it. All errors returned from this function can be considered benign.

func (*Node) GetIPPort 

func (n *Node) GetIPPort() (string, string, error)

GetIPPort returns the IP and Port the libp2p node is listening on. All errors returned from this function can be considered benign.

func (*Node) GetLocalMeshPeers 

func (n *Node) GetLocalMeshPeers(topic channels.Topic) []peer.ID

GetLocalMeshPeers returns the list of peers in the local mesh for the given topic. Args: - topic: the topic. Returns: - []peer.ID: the list of peers in the local mesh for the given topic.

func (*Node) GetPeersForProtocol 

func (n *Node) GetPeersForProtocol(pid protocol.ID) peer.IDSlice

GetPeersForProtocol returns slice peer IDs for the specified protocol ID.

func (*Node) HasSubscription 

func (n *Node) HasSubscription(topic channels.Topic) bool

HasSubscription returns true if the node currently has an active subscription to the topic.

func (*Node) Host 

func (n *Node) Host() host.Host

Host returns pointer to host object of node.

func (*Node) ID 

func (n *Node) ID() peer.ID

ID returns the peer.ID of the node, which is the unique identifier of the node at the libp2p level. For other libp2p nodes, the current node is identified by this ID.

func (*Node) IsConnected 

func (n *Node) IsConnected(peerID peer.ID) (bool, error)

IsConnected returns true if address is a direct peer of this node else false. Peers are considered not connected if the underlying libp2p host reports the peers as not connected and there are no connections in the connection list. error returns:

  • network.ErrIllegalConnectionState if the underlying libp2p host reports connectedness as NotConnected but the connections list to the peer is not empty. This would normally indicate a bug within libp2p. Although the network.ErrIllegalConnectionState a bug in libp2p there is a small chance that this error will be returned due to a race condition between the time we check Connectedness and ConnsToPeer. There is a chance that a connection could be established after we check Connectedness but right before we check ConnsToPeer.

func (*Node) IsDisallowListed 

func (n *Node) IsDisallowListed(peerId peer.ID) ([]flownet.DisallowListedCause, bool)

IsDisallowListed determines whether the given peer is disallow-listed for any reason. Args: - peerID: the peer to check. Returns: - []network.DisallowListedCause: the list of causes for which the given peer is disallow-listed. If the peer is not disallow-listed for any reason, a nil slice is returned. - bool: true if the peer is disallow-listed for any reason, false otherwise.

func (*Node) ListPeers 

func (n *Node) ListPeers(topic string) []peer.ID

ListPeers returns list of peer IDs for peers subscribed to the topic.

func (*Node) OnAllowListNotification 

func (n *Node) OnAllowListNotification(peerId peer.ID, cause flownet.DisallowListedCause)

OnAllowListNotification is called when a new allow list update notification is distributed. Any error on consuming event must handle internally. The implementation must be concurrency safe. Args: 

id: peer ID of the peer being allow-listed.
cause: cause of the peer being allow-listed (only this cause is removed from the peer's disallow-listed causes).

Returns: 

none

func (*Node) OnDisallowListNotification 

func (n *Node) OnDisallowListNotification(peerId peer.ID, cause flownet.DisallowListedCause)

OnDisallowListNotification is called when a new disallow list update notification is distributed. Any error on consuming event must handle internally. The implementation must be concurrency safe. Args: 

id: peer ID of the peer being disallow-listed.
cause: cause of the peer being disallow-listed (only this cause is added to the peer's disallow-listed causes).

Returns: 

none

func (*Node) OpenAndWriteOnStream 

func (n *Node) OpenAndWriteOnStream(ctx context.Context, peerID peer.ID, protectionTag string, writingLogic func(stream libp2pnet.Stream) error) error

OpenAndWriteOnStream opens a new stream to a peer. The stream is opened to the given peerID and writingLogic is executed on the stream. The created stream does not need to be reused and can be inexpensively created for each send. Moreover, the stream creation does not incur a round-trip time as the stream negotiation happens on an existing connection.

Args:

  • ctx: The context used to control the stream's lifecycle.
  • peerID: The ID of the peer to open the stream to.
  • protectionTag: A tag that protects the connection and ensures that the connection manager keeps it alive, and won't prune the connection while the tag is active.
  • writingLogic: A callback function that contains the logic for writing to the stream. It allows an external caller to write to the stream without having to worry about the stream creation and management.

Returns: error: An error, if any occurred during the process. This includes failure in creating the stream, setting the write deadline, executing the writing logic, resetting the stream if the writing logic fails, or closing the stream. All returned errors during this process can be considered benign.

func (*Node) PeerManagerComponent 

func (n *Node) PeerManagerComponent() component.Component

PeerManagerComponent returns the component interface of the peer manager.

func (*Node) PeerScoreExposer 

func (n *Node) PeerScoreExposer() p2p.PeerScoreExposer

PeerScoreExposer returns the node's peer score exposer implementation. If the node's peer score exposer has not been set, the second return value will be false.

func (*Node) Publish 

func (n *Node) Publish(ctx context.Context, messageScope flownet.OutgoingMessageScope) error

Publish publishes the given payload on the topic. All errors returned from this function can be considered benign.

func (*Node) RemovePeer 

func (n *Node) RemovePeer(peerID peer.ID) error

RemovePeer closes the connection with the peer. All errors returned from this function can be considered benign.

func (*Node) RequestPeerUpdate 

func (n *Node) RequestPeerUpdate()

RequestPeerUpdate requests an update to the peer connections of this node using the peer manager.

func (*Node) Routing 

func (n *Node) Routing() routing.Routing

Routing returns the node's routing implementation.

func (*Node) RoutingTable 

func (n *Node) RoutingTable() *kbucket.RoutingTable

RoutingTable returns the node routing table

func (*Node) SetComponentManager 

func (n *Node) SetComponentManager(cm *component.ComponentManager)

SetComponentManager sets the component manager for the node. SetComponentManager may be called at most once.

func (*Node) SetPubSub 

func (n *Node) SetPubSub(ps p2p.PubSubAdapter)

SetPubSub sets the node's pubsub implementation. SetPubSub may be called at most once.

func (*Node) SetRouting 

func (n *Node) SetRouting(r routing.Routing) error

SetRouting sets the node's routing implementation. SetRouting may be called at most once.

func (*Node) SetUnicastManager 

func (n *Node) SetUnicastManager(uniMgr p2p.UnicastManager)

SetUnicastManager sets the unicast manager for the node. SetUnicastManager may be called at most once.

func (*Node) Start 

func (n *Node) Start(ctx irrecoverable.SignalerContext)

func (*Node) Stop 

func (n *Node) Stop() error

Stop terminates the libp2p node. All errors returned from this function can be considered benign.

func (*Node) Subscribe 

func (n *Node) Subscribe(topic channels.Topic, topicValidator p2p.TopicValidatorFunc) (p2p.Subscription, error)

Subscribe subscribes the node to the given topic and returns the subscription All errors returned from this function can be considered benign.

func (*Node) Unsubscribe 

func (n *Node) Unsubscribe(topic channels.Topic) error

Unsubscribe cancels the subscriber and closes the topic. Args: topic: topic to unsubscribe from. Returns: error: error if any, which means unsubscribe failed. All errors returned from this function can be considered benign.

func (*Node) WithDefaultUnicastProtocol 

func (n *Node) WithDefaultUnicastProtocol(defaultHandler libp2pnet.StreamHandler, preferred []protocols.ProtocolName) error

WithDefaultUnicastProtocol overrides the default handler of the unicast manager and registers all preferred protocols.

func (*Node) WithPeersProvider 

func (n *Node) WithPeersProvider(peersProvider p2p.PeersProvider)

WithPeersProvider sets the PeersProvider for the peer manager. If a peer manager factory is set, this method will set the peer manager's PeersProvider.

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