service

package
v0.1.45 Latest Latest
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 Go to latest Published: Jul 15, 2021 License: MIT Imports: 13 Imported by: 0

Documentation

Overview

Package service defines basic interfaces to for protocols to consume p2p functionality.

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

This section is empty.

Types

type Data 

type Data interface {
	Bytes() []byte
}

Data is a wrapper around a message that can hold either raw bytes message or a req-res wrapper.

type DataBytes 

type DataBytes struct {
	Payload []byte
}

DataBytes is a byte array payload wrapper.

func (DataBytes) Bytes 

func (m DataBytes) Bytes() []byte

Bytes returns the message as bytes

type DataMsgWrapper 

type DataMsgWrapper struct {
	Req     bool
	MsgType uint32
	ReqID   uint64
	Payload []byte
}

DataMsgWrapper is a req-res payload wrapper

func (DataMsgWrapper) Bytes 

func (m DataMsgWrapper) Bytes() []byte

Bytes returns the message as bytes

type DirectMessage 

type DirectMessage interface {
	Metadata() P2PMetadata
	Sender() p2pcrypto.PublicKey
	Bytes() []byte
}

DirectMessage is an interface that represents a simple direct message structure

type Fetcher added in v0.1.16 

type Fetcher interface {
	FetchBlock(context.Context, types.BlockID) error
	FetchAtx(context.Context, types.ATXID) error
	GetPoetProof(context.Context, types.Hash32) error
	GetTxs(context.Context, []types.TransactionID) error
	GetBlocks(context.Context, []types.BlockID) error
	GetAtxs(context.Context, []types.ATXID) error
	ListenToGossip() bool
	IsSynced(context.Context) bool
}

Fetcher is a general interface that defines a component capable of fetching data from remote peers

type GossipDataHandler added in v0.1.15 

type GossipDataHandler func(ctx context.Context, data GossipMessage, syncer Fetcher)

GossipDataHandler is the function type that will be called when data is

type GossipMessage 

type GossipMessage interface {
	Sender() p2pcrypto.PublicKey
	IsOwnMessage() bool
	Bytes() []byte
	RequestID() string
	ValidationCompletedChan() chan MessageValidation
	ReportValidation(ctx context.Context, protocol string)
}

GossipMessage is an interface that represents a simple gossip message structure

type Listener added in v0.1.15 

type Listener struct {
	*log.Log
	// contains filtered or unexported fields
}

Listener represents the main struct that reqisters delegates to gossip function

func NewListener added in v0.1.15 

func NewListener(net Service, syncer Fetcher, config config.Config, log log.Log) *Listener

NewListener creates a new listener struct

func (*Listener) AddListener added in v0.1.15 

func (l *Listener) AddListener(ctx context.Context, channel string, priority priorityq.Priority, dataHandler GossipDataHandler)

AddListener adds a listener to a specific gossip channel

func (*Listener) Stop added in v0.1.15 

func (l *Listener) Stop()

Stop stops listening to all gossip channels

type MessageValidation 

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

MessageValidation is a gossip message validation event.

func NewMessageValidation 

func NewMessageValidation(sender p2pcrypto.PublicKey, msg []byte, prot string, reqID string) MessageValidation

NewMessageValidation creates a message validation struct to pass to the protocol.

func (MessageValidation) Message 

func (mv MessageValidation) Message() []byte

Message returns the message as bytes

func (MessageValidation) Protocol 

func (mv MessageValidation) Protocol() string

Protocol is the protocol this message is targeted to.

func (MessageValidation) RequestID added in v0.1.27 

func (mv MessageValidation) RequestID() string

RequestID is the originating request ID of the message

func (MessageValidation) Sender 

func (mv MessageValidation) Sender() p2pcrypto.PublicKey

Sender returns the public key of the sender of this message. (might not be the author)

type Node 

type Node struct {
	*node.Info
	// contains filtered or unexported fields
}

Node is a simulated p2p node that can be used as a p2p service

func (*Node) Broadcast 

func (sn *Node) Broadcast(_ context.Context, protocol string, payload []byte) error

Broadcast disseminates a message to all simulated nodes. sends to yourself first.

func (*Node) GossipReady added in v0.1.21 

func (sn *Node) GossipReady() <-chan struct{}

GossipReady is a chan which is closed when we established initial min connections with peers.

func (*Node) ProcessDirectProtocolMessage 

func (sn *Node) ProcessDirectProtocolMessage(sender p2pcrypto.PublicKey, protocol string, payload Data, _ P2PMetadata) error

ProcessDirectProtocolMessage passes a direct message to the protocol.

func (*Node) ProcessGossipProtocolMessage 

func (sn *Node) ProcessGossipProtocolMessage(_ context.Context, sender p2pcrypto.PublicKey, ownMessage bool, protocol string, data Data, validationCompletedChan chan MessageValidation) error

ProcessGossipProtocolMessage passes a gossip message to the protocol.

func (*Node) RegisterDirectProtocol 

func (sn *Node) RegisterDirectProtocol(protocol string) chan DirectMessage

RegisterDirectProtocol creates and returns a channel for a given direct based protocol.

func (*Node) RegisterDirectProtocolWithChannel 

func (sn *Node) RegisterDirectProtocolWithChannel(protocol string, ingressChannel chan DirectMessage) chan DirectMessage

RegisterDirectProtocolWithChannel configures and returns a channel for a given protocol.

func (*Node) RegisterGossipProtocol 

func (sn *Node) RegisterGossipProtocol(protocol string, _ priorityq.Priority) chan GossipMessage

RegisterGossipProtocol creates and returns a channel for a given gossip based protocol.

func (*Node) SendMessage 

func (sn *Node) SendMessage(ctx context.Context, peerPubkey p2pcrypto.PublicKey, protocol string, payload []byte) error

SendMessage send a message to another simulated node.

func (*Node) SendWrappedMessage 

func (sn *Node) SendWrappedMessage(ctx context.Context, nodeID p2pcrypto.PublicKey, protocol string, payload *DataMsgWrapper) error

SendWrappedMessage send a wrapped message to another simulated node.

func (*Node) Shutdown 

func (sn *Node) Shutdown()

Shutdown closes all node channels are remove it from the Simulator map

func (*Node) Start 

func (sn *Node) Start(context.Context) error

Start is here to satisfy the Service interface.

func (*Node) SubscribePeerEvents 

func (sn *Node) SubscribePeerEvents() (conn chan p2pcrypto.PublicKey, disc chan p2pcrypto.PublicKey)

SubscribePeerEvents satisfy the Service interface and registers channels for new simulator peers joining.

type P2PMetadata 

type P2PMetadata struct {
	FromAddress net.Addr
}

P2PMetadata is a generic metadata interface

type Service 

type Service interface {
	Start(ctx context.Context) error
	RegisterGossipProtocol(protocol string, prio priorityq.Priority) chan GossipMessage
	RegisterDirectProtocol(protocol string) chan DirectMessage
	SubscribePeerEvents() (new chan p2pcrypto.PublicKey, del chan p2pcrypto.PublicKey)
	GossipReady() <-chan struct{}
	Broadcast(ctx context.Context, protocol string, payload []byte) error
	Shutdown()
}

Service is an interface that represents a networking service (ideally p2p) that we can use to send messages or listen to incoming messages

type SimGossipMessage added in v0.1.31 

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

SimGossipMessage is a simulated gossip message

func NewSimGossipMessage added in v0.1.31 

func NewSimGossipMessage(sender p2pcrypto.PublicKey, ownMessage bool, msg Data) SimGossipMessage

NewSimGossipMessage creates and returns a new SimGossipMessage

func (SimGossipMessage) Bytes added in v0.1.31 

func (sm SimGossipMessage) Bytes() []byte

Bytes is the message's binary data in byte array format.

func (SimGossipMessage) Data added in v0.1.31 

func (sm SimGossipMessage) Data() Data

Data is the message's binary data in byte array format.

func (SimGossipMessage) IsOwnMessage added in v0.1.31 

func (sm SimGossipMessage) IsOwnMessage() bool

IsOwnMessage is whether the message was generated by this node

func (SimGossipMessage) ReportValidation added in v0.1.31 

func (sm SimGossipMessage) ReportValidation(ctx context.Context, protocol string)

ReportValidation reports sm as a valid message for protocol.

func (SimGossipMessage) RequestID added in v0.1.31 

func (sm SimGossipMessage) RequestID() string

RequestID returns the request ID

func (SimGossipMessage) Sender added in v0.1.31 

func (sm SimGossipMessage) Sender() p2pcrypto.PublicKey

Sender is the sender public key

func (SimGossipMessage) ValidationCompletedChan added in v0.1.31 

func (sm SimGossipMessage) ValidationCompletedChan() chan MessageValidation

ValidationCompletedChan is a channel over which the protocol is expected to update on the message validation

type Simulator 

type Simulator struct {
	io.Closer
	// contains filtered or unexported fields
}

Simulator is a p2p node factory and message bridge that is used to simulate the p2p layer provided to protocols without using real network or p2p code. It resembles the `Service` interface API.

func NewSimulator 

func NewSimulator() *Simulator

NewSimulator Creates a p2p simulation by providing nodes as p2p services and bridge them.

func (*Simulator) NewFaulty 

func (s *Simulator) NewFaulty(isRandBehaviour bool, maxBroadcastDelaySec uint32, maxReceiveDelaySec uint32) *Node

NewFaulty creates a node that can deploy faulty behaviour, broadcast delay, receive delay and randomness.

func (*Simulator) NewNode 

func (s *Simulator) NewNode() *Node

NewNode creates a new p2p node in this Simulator

func (*Simulator) NewNodeFrom 

func (s *Simulator) NewNodeFrom(n *node.Info) *Node

NewNodeFrom creates a new node from existing details

func (*Simulator) SubscribeToPeerEvents 

func (s *Simulator) SubscribeToPeerEvents(myid p2pcrypto.Key) (chan p2pcrypto.PublicKey, chan p2pcrypto.PublicKey)

SubscribeToPeerEvents starts listening to new peers and disconnected peers events.

type Syncer added in v0.1.15 

type Syncer interface {
	FetchAtxReferences(context.Context, *types.ActivationTx) error
	FetchPoetProof(ctx context.Context, poetProofRef []byte) error
	ListenToGossip() bool
	GetBlock(ID types.BlockID) (*types.Block, error)
	IsSynced(context.Context) bool
}

Syncer is interface for sync services

Source Files

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