p2p

package
v1.10.17-rc.7 Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Nov 28, 2023 License: BSD-3-Clause Imports: 22 Imported by: 16

Documentation

Index

Constants

This section is empty.

Variables

View Source 
var (
	ErrAppRequestFailed = errors.New("app request failed")
	ErrRequestPending   = errors.New("request pending")
	ErrNoPeers          = errors.New("no peers")
)
View Source 
var (
	ErrExistingAppProtocol = errors.New("existing app protocol")
	ErrUnrequestedResponse = errors.New("unrequested response")
)
View Source 
var (
	ErrNotValidator = errors.New("not a validator")
)
View Source 
var (
	ErrThrottled = errors.New("throttled")
)

Functions

This section is empty.

Types

type AppResponseCallback 

type AppResponseCallback func(
	ctx context.Context,
	nodeID ids.NodeID,
	responseBytes []byte,
	err error,
)

AppResponseCallback is called upon receiving an AppResponse for an AppRequest issued by Client. Callers should check [err] to see whether the AppRequest failed or not.

type Client 

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

func (*Client) AppGossip 

func (c *Client) AppGossip(
	ctx context.Context,
	appGossipBytes []byte,
) error

AppGossip sends a gossip message to a random set of peers.

func (*Client) AppGossipSpecific 

func (c *Client) AppGossipSpecific(
	ctx context.Context,
	nodeIDs set.Set[ids.NodeID],
	appGossipBytes []byte,
) error

AppGossipSpecific sends a gossip message to a predetermined set of peers.

func (*Client) AppRequest 

func (c *Client) AppRequest(
	ctx context.Context,
	nodeIDs set.Set[ids.NodeID],
	appRequestBytes []byte,
	onResponse AppResponseCallback,
) error

AppRequest issues an arbitrary request to a node. [onResponse] is invoked upon an error or a response.

func (*Client) AppRequestAny 

func (c *Client) AppRequestAny(
	ctx context.Context,
	appRequestBytes []byte,
	onResponse AppResponseCallback,
) error

AppRequestAny issues an AppRequest to an arbitrary node decided by Client. If a specific node needs to be requested, use AppRequest instead. See AppRequest for more docs.

func (*Client) CrossChainAppRequest 

func (c *Client) CrossChainAppRequest(
	ctx context.Context,
	chainID ids.ID,
	appRequestBytes []byte,
	onResponse CrossChainAppResponseCallback,
) error

CrossChainAppRequest sends a cross chain app request to another vm. [onResponse] is invoked upon an error or a response.

type CrossChainAppResponseCallback 

type CrossChainAppResponseCallback func(
	ctx context.Context,
	chainID ids.ID,
	responseBytes []byte,
	err error,
)

CrossChainAppResponseCallback is called upon receiving an CrossChainAppResponse for a CrossChainAppRequest issued by Client. Callers should check [err] to see whether the AppRequest failed or not.

type Handler 

type Handler interface {
	// AppGossip is called when handling an AppGossip message.
	AppGossip(
		ctx context.Context,
		nodeID ids.NodeID,
		gossipBytes []byte,
	)
	// AppRequest is called when handling an AppRequest message.
	// Returns the bytes for the response corresponding to [requestBytes]
	AppRequest(
		ctx context.Context,
		nodeID ids.NodeID,
		deadline time.Time,
		requestBytes []byte,
	) ([]byte, error)
	// CrossChainAppRequest is called when handling a CrossChainAppRequest
	// message.
	// Returns the bytes for the response corresponding to [requestBytes]
	CrossChainAppRequest(
		ctx context.Context,
		chainID ids.ID,
		deadline time.Time,
		requestBytes []byte,
	) ([]byte, error)
}

Handler is the server-side logic for virtual machine application protocols.

type NoOpHandler added in v1.10.9 

type NoOpHandler struct{}

NoOpHandler drops all messages

func (NoOpHandler) AppGossip added in v1.10.9 

func (NoOpHandler) AppGossip(context.Context, ids.NodeID, []byte)

func (NoOpHandler) AppRequest added in v1.10.9 

func (NoOpHandler) AppRequest(context.Context, ids.NodeID, time.Time, []byte) ([]byte, error)

func (NoOpHandler) CrossChainAppRequest added in v1.10.9 

func (NoOpHandler) CrossChainAppRequest(context.Context, ids.ID, time.Time, []byte) ([]byte, error)

type NodeSampler added in v1.10.9 

type NodeSampler interface {
	// Sample returns at most [limit] nodes. This may return fewer nodes if
	// fewer than [limit] are available.
	Sample(ctx context.Context, limit int) []ids.NodeID
}

NodeSampler samples nodes in network

type PeerTracker added in v1.10.17 

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

Tracks the bandwidth of responses coming from peers, preferring to contact peers with known good bandwidth, connecting to new peers with an exponentially decaying probability.

func NewPeerTracker added in v1.10.17 

func NewPeerTracker(
	log logging.Logger,
	metricsNamespace string,
	registerer prometheus.Registerer,
) (*PeerTracker, error)

func (*PeerTracker) Connected added in v1.10.17 

func (p *PeerTracker) Connected(nodeID ids.NodeID, nodeVersion *version.Application)

Connected should be called when [nodeID] connects to this node

func (*PeerTracker) Disconnected added in v1.10.17 

func (p *PeerTracker) Disconnected(nodeID ids.NodeID)

Disconnected should be called when [nodeID] disconnects from this node

func (*PeerTracker) GetAnyPeer added in v1.10.17 

func (p *PeerTracker) GetAnyPeer(minVersion *version.Application) (ids.NodeID, bool)

TODO get rid of minVersion Returns a peer that we're connected to. If we should track more peers, returns a random peer with version >= [minVersion], if any exist. Otherwise, with probability [randomPeerProbability] returns a random peer from [p.responsivePeers]. With probability [1-randomPeerProbability] returns the peer in [p.bandwidthHeap] with the highest bandwidth.

func (*PeerTracker) Size added in v1.10.17 

func (p *PeerTracker) Size() int

Returns the number of peers the node is connected to.

func (*PeerTracker) TrackBandwidth added in v1.10.17 

func (p *PeerTracker) TrackBandwidth(nodeID ids.NodeID, bandwidth float64)

Record that we observed that [nodeID]'s bandwidth is [bandwidth]. Adds the peer's bandwidth averager to the bandwidth heap.

func (*PeerTracker) TrackPeer added in v1.10.17 

func (p *PeerTracker) TrackPeer(nodeID ids.NodeID)

Record that we sent a request to [nodeID].

type Peers added in v1.10.9 

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

Peers contains a set of nodes that we are connected to.

func (*Peers) Connected added in v1.10.9 

func (p *Peers) Connected(_ context.Context, nodeID ids.NodeID, _ *version.Application) error

func (*Peers) Disconnected added in v1.10.9 

func (p *Peers) Disconnected(_ context.Context, nodeID ids.NodeID) error

func (*Peers) Sample added in v1.10.9 

func (p *Peers) Sample(_ context.Context, limit int) []ids.NodeID

type Router 

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

Router routes incoming application messages to the corresponding registered app handler. App messages must be made using the registered handler's corresponding Client.

func NewRouter 

func NewRouter(
	log logging.Logger,
	sender common.AppSender,
	metrics prometheus.Registerer,
	namespace string,
) *Router

NewRouter returns a new instance of Router

func (*Router) AppGossip 

func (r *Router) AppGossip(ctx context.Context, nodeID ids.NodeID, gossip []byte) error

AppGossip routes an AppGossip message to a Handler based on the handler prefix. The message is dropped if no matching handler can be found.

Any error condition propagated outside Handler application logic is considered fatal

func (*Router) AppRequest 

func (r *Router) AppRequest(ctx context.Context, nodeID ids.NodeID, requestID uint32, deadline time.Time, request []byte) error

AppRequest routes an AppRequest to a Handler based on the handler prefix. The message is dropped if no matching handler can be found.

Any error condition propagated outside Handler application logic is considered fatal

func (*Router) AppRequestFailed 

func (r *Router) AppRequestFailed(ctx context.Context, nodeID ids.NodeID, requestID uint32) error

AppRequestFailed routes an AppRequestFailed message to the callback corresponding to requestID.

Any error condition propagated outside Handler application logic is considered fatal

func (*Router) AppResponse 

func (r *Router) AppResponse(ctx context.Context, nodeID ids.NodeID, requestID uint32, response []byte) error

AppResponse routes an AppResponse message to the callback corresponding to requestID.

Any error condition propagated outside Handler application logic is considered fatal

func (*Router) CrossChainAppRequest 

func (r *Router) CrossChainAppRequest(
	ctx context.Context,
	chainID ids.ID,
	requestID uint32,
	deadline time.Time,
	msg []byte,
) error

CrossChainAppRequest routes a CrossChainAppRequest message to a Handler based on the handler prefix. The message is dropped if no matching handler can be found.

Any error condition propagated outside Handler application logic is considered fatal

func (*Router) CrossChainAppRequestFailed 

func (r *Router) CrossChainAppRequestFailed(ctx context.Context, chainID ids.ID, requestID uint32) error

CrossChainAppRequestFailed routes a CrossChainAppRequestFailed message to the callback corresponding to requestID.

Any error condition propagated outside Handler application logic is considered fatal

func (*Router) CrossChainAppResponse 

func (r *Router) CrossChainAppResponse(ctx context.Context, chainID ids.ID, requestID uint32, response []byte) error

CrossChainAppResponse routes a CrossChainAppResponse message to the callback corresponding to requestID.

Any error condition propagated outside Handler application logic is considered fatal

func (*Router) RegisterAppProtocol 

func (r *Router) RegisterAppProtocol(handlerID uint64, handler Handler, nodeSampler NodeSampler) (*Client, error)

RegisterAppProtocol reserves an identifier for an application protocol and returns a Client that can be used to send messages for the corresponding protocol.

type SlidingWindowThrottler added in v1.10.10 

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

SlidingWindowThrottler is an implementation of the sliding window throttling algorithm.

func NewSlidingWindowThrottler added in v1.10.10 

func NewSlidingWindowThrottler(period time.Duration, limit int) *SlidingWindowThrottler

NewSlidingWindowThrottler returns a new instance of SlidingWindowThrottler. Nodes are throttled if they exceed [limit] messages during an interval of time over [period]. [period] and [limit] should both be > 0.

func (*SlidingWindowThrottler) Handle added in v1.10.10 

func (s *SlidingWindowThrottler) Handle(nodeID ids.NodeID) bool

Handle returns true if the amount of calls received in the last [s.period] time is less than [s.limit]

This is calculated by adding the current period's count to a weighted count of the previous period.

type Throttler added in v1.10.10 

type Throttler interface {
	// Handle returns true if a message from [nodeID] should be handled.
	Handle(nodeID ids.NodeID) bool
}

type ThrottlerHandler added in v1.10.10 

type ThrottlerHandler struct {
	Handler
	Throttler Throttler
	Log       logging.Logger
}

func (ThrottlerHandler) AppGossip added in v1.10.10 

func (t ThrottlerHandler) AppGossip(ctx context.Context, nodeID ids.NodeID, gossipBytes []byte)

func (ThrottlerHandler) AppRequest added in v1.10.10 

func (t ThrottlerHandler) AppRequest(ctx context.Context, nodeID ids.NodeID, deadline time.Time, requestBytes []byte) ([]byte, error)

type ValidatorHandler added in v1.10.10 

type ValidatorHandler struct {
	Handler
	ValidatorSet ValidatorSet
	Log          logging.Logger
}

ValidatorHandler drops messages from non-validators

func (ValidatorHandler) AppGossip added in v1.10.10 

func (v ValidatorHandler) AppGossip(ctx context.Context, nodeID ids.NodeID, gossipBytes []byte)

func (ValidatorHandler) AppRequest added in v1.10.10 

func (v ValidatorHandler) AppRequest(ctx context.Context, nodeID ids.NodeID, deadline time.Time, requestBytes []byte) ([]byte, error)

type ValidatorSet added in v1.10.10 

type ValidatorSet interface {
	Has(ctx context.Context, nodeID ids.NodeID) bool
}

type Validators added in v1.10.9 

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

Validators contains a set of nodes that are staking.

func NewValidators added in v1.10.9 

func NewValidators(log logging.Logger, subnetID ids.ID, validators validators.State, maxValidatorSetStaleness time.Duration) *Validators

func (*Validators) Has added in v1.10.9 

func (v *Validators) Has(ctx context.Context, nodeID ids.NodeID) bool

func (*Validators) Sample added in v1.10.9 

func (v *Validators) Sample(ctx context.Context, limit int) []ids.NodeID

Source Files

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Directories

Path Synopsis
Package mocks is a generated GoMock package.
 Package mocks is a generated GoMock package.

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