comm

Documentation

Index

• Constants
• func GenerateCertificatesOrPanic() tls.Certificate
• type AggregatedSendResult
  • func (ar AggregatedSendResult) AckCount() int
  • func (ar AggregatedSendResult) NackCount() int
  • func (ar AggregatedSendResult) String() string
• type ChannelDeMultiplexer
  • func NewChannelDemultiplexer() *ChannelDeMultiplexer
  • func (m *ChannelDeMultiplexer) AddChannel(predicate common.MessageAcceptor) chan interface{}
  • func (m *ChannelDeMultiplexer) Close()
  • func (m *ChannelDeMultiplexer) DeMultiplex(msg interface{})
• type Comm
  • func NewCommInstance(s *grpc.Server, certs *common.TLSCertificates, idStore identity.Mapper, ...) (Comm, error)
• type CommConfig
• type ConnConfig
• type ReceivedMessageImpl
  • func (m *ReceivedMessageImpl) Ack(err error)
  • func (m *ReceivedMessageImpl) GetConnectionInfo() *proto.ConnectionInfo
  • func (m *ReceivedMessageImpl) GetGossipMessage() *proto.SignedGossipMessage
  • func (m *ReceivedMessageImpl) GetSourceEnvelope() *proto.Envelope
  • func (m *ReceivedMessageImpl) Respond(msg *proto.GossipMessage)
• type RemotePeer
  • func (p *RemotePeer) String() string
• type SecurityAdvisor
• type SendResult
  • func (sr SendResult) Error() string

Constants

const (
	DefDialTimeout  = time.Second * 3
	DefConnTimeout  = time.Second * 2
	DefRecvBuffSize = 20
	DefSendBuffSize = 20
)

Functions

func GenerateCertificatesOrPanic

func GenerateCertificatesOrPanic() tls.Certificate

GenerateCertificatesOrPanic generates a a random pair of public and private keys and return TLS certificate

Types

type AggregatedSendResult

type AggregatedSendResult []SendResult

AggregatedSendResult represents a slice of SendResults

func (AggregatedSendResult) AckCount

func (ar AggregatedSendResult) AckCount() int

AckCount returns the number of successful acknowledgements

func (AggregatedSendResult) NackCount

func (ar AggregatedSendResult) NackCount() int

NackCount returns the number of unsuccessful acknowledgements

func (AggregatedSendResult) String

func (ar AggregatedSendResult) String() string

String returns a JSONed string representation of the AggregatedSendResult

type ChannelDeMultiplexer

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

ChannelDeMultiplexer is a struct that can receive channel registrations (AddChannel) and publications (DeMultiplex) and it broadcasts the publications to registrations according to their predicate

func NewChannelDemultiplexer

func NewChannelDemultiplexer() *ChannelDeMultiplexer

NewChannelDemultiplexer creates a new ChannelDeMultiplexer

func (*ChannelDeMultiplexer) AddChannel

func (m *ChannelDeMultiplexer) AddChannel(predicate common.MessageAcceptor) chan interface{}

AddChannel registers a channel with a certain predicate

func (*ChannelDeMultiplexer) Close

func (m *ChannelDeMultiplexer) Close()

Close closes this channel, which makes all channels registered before to close as well.

func (*ChannelDeMultiplexer) DeMultiplex

func (m *ChannelDeMultiplexer) DeMultiplex(msg interface{})

DeMultiplex broadcasts the message to all channels that were returned by AddChannel calls and that hold the respected predicates.

type Comm

type Comm interface {

	// GetPKIid returns this instance's PKI id
	GetPKIid() common.PKIidType

	// Send sends a message to remote peers
	Send(msg *proto.SignedGossipMessage, peers ...*RemotePeer)

	// SendWithAck sends a message to remote peers, waiting for acknowledgement from minAck of them, or until a certain timeout expires
	SendWithAck(msg *proto.SignedGossipMessage, timeout time.Duration, minAck int, peers ...*RemotePeer) AggregatedSendResult

	// Probe probes a remote node and returns nil if its responsive,
	// and an error if it's not.
	Probe(peer *RemotePeer) error

	// Handshake authenticates a remote peer and returns
	// (its identity, nil) on success and (nil, error)
	Handshake(peer *RemotePeer) (api.PeerIdentityType, error)

	// Accept returns a dedicated read-only channel for messages sent by other nodes that match a certain predicate.
	// Each message from the channel can be used to send a reply back to the sender
	Accept(common.MessageAcceptor) <-chan proto.ReceivedMessage

	// PresumedDead returns a read-only channel for node endpoints that are suspected to be offline
	PresumedDead() <-chan common.PKIidType

	// IdentitySwitch returns a read-only channel about identity change events
	IdentitySwitch() <-chan common.PKIidType

	// CloseConn closes a connection to a certain endpoint
	CloseConn(peer *RemotePeer)

	// Stop stops the module
	Stop()
}

Comm is an object that enables to communicate with other peers that also embed a CommModule.

func NewCommInstance

func NewCommInstance(s *grpc.Server, certs *common.TLSCertificates, idStore identity.Mapper,
	peerIdentity api.PeerIdentityType, secureDialOpts api.PeerSecureDialOpts, sa api.SecurityAdvisor,
	commMetrics *metrics.CommMetrics, config CommConfig, dialOpts ...grpc.DialOption) (Comm, error)

NewCommInstance creates a new comm instance that binds itself to the given gRPC server

type CommConfig

type CommConfig struct {
	DialTimeout  time.Duration // Dial timeout
	ConnTimeout  time.Duration // Connection timeout
	RecvBuffSize int           // Buffer size of received messages
	SendBuffSize int           // Buffer size of sending messages
}

CommConfig is the configuration required to initialize a new comm

type ConnConfig

type ConnConfig struct {
	RecvBuffSize int
	SendBuffSize int
}

ConnConfig is the configuration required to initialize a new conn

type ReceivedMessageImpl

type ReceivedMessageImpl struct {
	*proto.SignedGossipMessage
	// contains filtered or unexported fields
}

ReceivedMessageImpl is an implementation of ReceivedMessage

func (*ReceivedMessageImpl) Ack

func (m *ReceivedMessageImpl) Ack(err error)

Ack returns to the sender an acknowledgement for the message

func (*ReceivedMessageImpl) GetConnectionInfo

func (m *ReceivedMessageImpl) GetConnectionInfo() *proto.ConnectionInfo

GetConnectionInfo returns information about the remote peer that send the message

func (*ReceivedMessageImpl) GetGossipMessage

func (m *ReceivedMessageImpl) GetGossipMessage() *proto.SignedGossipMessage

GetGossipMessage returns the inner GossipMessage

func (*ReceivedMessageImpl) GetSourceEnvelope

func (m *ReceivedMessageImpl) GetSourceEnvelope() *proto.Envelope

GetSourceEnvelope Returns the Envelope the ReceivedMessage was constructed with

func (*ReceivedMessageImpl) Respond

func (m *ReceivedMessageImpl) Respond(msg *proto.GossipMessage)

Respond sends a msg to the source that sent the ReceivedMessageImpl

type RemotePeer

type RemotePeer struct {
	Endpoint string
	PKIID    common.PKIidType
}

RemotePeer defines a peer's endpoint and its PKIid

func (*RemotePeer) String

func (p *RemotePeer) String() string

String converts a RemotePeer to a string

type SecurityAdvisor

type SecurityAdvisor interface {
	// OrgByPeerIdentity returns the organization identity of the given PeerIdentityType
	OrgByPeerIdentity(api.PeerIdentityType) api.OrgIdentityType
}

SecurityAdvisor defines an external auxiliary object that provides security and identity related capabilities

type SendResult

type SendResult struct {
	RemotePeer
	// contains filtered or unexported fields
}

SendResult defines a result of a send to a remote peer

func (SendResult) Error

func (sr SendResult) Error() string

Error returns the error of the SendResult, or an empty string if an error hasn't occurred