router

Documentation

Index

• type ChainRouter
  • func (cr *ChainRouter) AddChain(chain *Handler)
  • func (cr *ChainRouter) Benched(chainID ids.ID, validatorID ids.ShortID)
  • func (cr *ChainRouter) Connected(validatorID ids.ShortID)
  • func (cr *ChainRouter) Disconnected(validatorID ids.ShortID)
  • func (cr *ChainRouter) EndInterval()
  • func (cr *ChainRouter) Gossip()
  • func (cr *ChainRouter) HandleInbound(msg message.InboundMessage)
  • func (cr *ChainRouter) HealthCheck() (interface{}, error)
  • func (cr *ChainRouter) Initialize(nodeID ids.ShortID, log logging.Logger, msgCreator message.Creator, ...) error
  • func (cr *ChainRouter) RegisterRequest(nodeID ids.ShortID, chainID ids.ID, requestID uint32, op message.Op)
  • func (cr *ChainRouter) Shutdown()
  • func (cr *ChainRouter) Unbenched(chainID ids.ID, validatorID ids.ShortID)
• type ExternalRouter
• type Handler
  • func (h *Handler) Context() *snow.ConsensusContext
  • func (h *Handler) Dispatch()
  • func (h *Handler) Engine() common.Engine
  • func (h *Handler) Gossip()
  • func (h *Handler) Initialize(mc message.Creator, engine common.Engine, validators validators.Set, ...) error
  • func (h *Handler) Push(msg message.InboundMessage)
  • func (h *Handler) SetEngine(engine common.Engine)
  • func (h *Handler) StartShutdown()
  • func (h *Handler) Timeout()
• type HealthConfig
• type InternalRouter
• type Router
• type Timer
  • func (t *Timer) RegisterTimeout(d time.Duration)

Types

type ChainRouter

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

ChainRouter routes incoming messages from the validator network to the consensus engines that the messages are intended for. Note that consensus engines are uniquely identified by the ID of the chain that they are working on.

func (*ChainRouter) AddChain

func (cr *ChainRouter) AddChain(chain *Handler)

AddChain registers the specified chain so that incoming messages can be routed to it

func (*ChainRouter) Benched

func (cr *ChainRouter) Benched(chainID ids.ID, validatorID ids.ShortID)

Benched routes an incoming notification that a validator was benched

func (*ChainRouter) Connected

func (cr *ChainRouter) Connected(validatorID ids.ShortID)

Connected routes an incoming notification that a validator was just connected

func (*ChainRouter) Disconnected

func (cr *ChainRouter) Disconnected(validatorID ids.ShortID)

Disconnected routes an incoming notification that a validator was connected

func (*ChainRouter) EndInterval

func (cr *ChainRouter) EndInterval()

EndInterval notifies the chains that the current CPU interval has ended TODO remove?

func (*ChainRouter) Gossip

func (cr *ChainRouter) Gossip()

Gossip accepted containers

func (*ChainRouter) HandleInbound

func (cr *ChainRouter) HandleInbound(msg message.InboundMessage)

func (*ChainRouter) HealthCheck

func (cr *ChainRouter) HealthCheck() (interface{}, error)

HealthCheck returns results of router health checks. Returns: 1) Information about health check results 2) An error if the health check reports unhealthy

func (*ChainRouter) Initialize

func (cr *ChainRouter) Initialize(
	nodeID ids.ShortID,
	log logging.Logger,
	msgCreator message.Creator,
	timeoutManager *timeout.Manager,
	gossipFrequency time.Duration,
	closeTimeout time.Duration,
	criticalChains ids.Set,
	onFatal func(exitCode int),
	healthConfig HealthConfig,
	metricsNamespace string,
	metricsRegisterer prometheus.Registerer,
) error

Initialize the router.

When this router receives an incoming message, it cancels the timeout in [timeouts] associated with the request that caused the incoming message, if applicable.

This router also fires a gossip event every [gossipFrequency] to the engine, notifying the engine it should gossip it's accepted set.

func (*ChainRouter) RegisterRequest

func (cr *ChainRouter) RegisterRequest(
	nodeID ids.ShortID,
	chainID ids.ID,
	requestID uint32,
	op message.Op,
)

RegisterRequest marks that we should expect to receive a reply from the given validator regarding the given chain and the reply should have the given requestID. The type of message we expect is [op]. Every registered request must be cleared either by receiving a valid reply and passing it to the appropriate chain or by a timeout. This method registers a timeout that calls such methods if we don't get a reply in time.

func (*ChainRouter) Shutdown

func (cr *ChainRouter) Shutdown()

Shutdown shuts down this router

func (*ChainRouter) Unbenched

func (cr *ChainRouter) Unbenched(chainID ids.ID, validatorID ids.ShortID)

Unbenched routes an incoming notification that a validator was just unbenched

type ExternalRouter

type ExternalRouter interface {
	HandleInbound(msg message.InboundMessage)

	RegisterRequest(
		nodeID ids.ShortID,
		chainID ids.ID,
		requestID uint32,
		op message.Op,
	)
}

ExternalRouter routes messages from the network to the Handler of the consensus engine that the message is intended for

type Handler

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

Handler passes incoming messages from the network to the consensus engine. (Actually, it receives the incoming messages from a ChainRouter, but same difference.)

func (*Handler) Context

func (h *Handler) Context() *snow.ConsensusContext

Context of this Handler

func (*Handler) Dispatch

func (h *Handler) Dispatch()

Dispatch waits for incoming messages from the router and, when they arrive, sends them to the consensus engine

func (*Handler) Engine

func (h *Handler) Engine() common.Engine

Engine returns the engine this handler dispatches to

func (*Handler) Gossip

func (h *Handler) Gossip()

Gossip passes a gossip request to the consensus engine

func (*Handler) Initialize

func (h *Handler) Initialize(
	mc message.Creator,
	engine common.Engine,
	validators validators.Set,
	msgFromVMChan <-chan common.Message,
) error

Initialize this consensus handler [engine] must be initialized before initializing this handler

func (*Handler) Push

func (h *Handler) Push(msg message.InboundMessage)

Push the message onto the handler's queue

func (*Handler) SetEngine

func (h *Handler) SetEngine(engine common.Engine)

SetEngine sets the engine for this handler to dispatch to

func (*Handler) StartShutdown

func (h *Handler) StartShutdown()

StartShutdown starts the shutdown process for this handler/engine. [h] must never be invoked again after calling this method. This method causes [shutdown] to eventually be called. [h.closed] is closed when this handler/engine are done shutting down.

func (*Handler) Timeout

func (h *Handler) Timeout()

Timeout passes a new timeout notification to the consensus engine

type HealthConfig

type HealthConfig struct {
	// Reports unhealthy if we drop more than [MaxDropRate] of messages
	MaxDropRate float64 `json:"maxDropRate"`

	// Halflife of averager used to calculate the message drop rate
	// Must be > 0.
	// Larger value --> Drop rate affected less by recent messages
	MaxDropRateHalflife time.Duration `json:"maxDropRateHalflife"`

	// Reports unhealthy if more than this number of requests are outstanding.
	// Must be > 0
	MaxOutstandingRequests int `json:"maxOutstandingRequests"`

	// Reports unhealthy if there is a request outstanding for longer than this
	MaxOutstandingDuration time.Duration `json:"maxOutstandingDuration"`

	// Reports unhealthy if there is at least 1 outstanding not processed
	// before this mark
	MaxRunTimeRequests time.Duration `json:"maxRunTimeRequests"`
}

HealthConfig describes parameters for router health checks.

type InternalRouter

type InternalRouter interface {
	benchlist.Benchable

	Connected(nodeID ids.ShortID)
	Disconnected(nodeID ids.ShortID)
}

InternalRouter deals with messages internal to this node

type Router

type Router interface {
	ExternalRouter
	InternalRouter

	Initialize(
		nodeID ids.ShortID,
		log logging.Logger,
		msgCreator message.Creator,
		timeouts *timeout.Manager,
		gossipFrequency,
		shutdownTimeout time.Duration,
		criticalChains ids.Set,
		onFatal func(exitCode int),
		healthConfig HealthConfig,
		metricsNamespace string,
		metricsRegisterer prometheus.Registerer,
	) error
	Shutdown()
	AddChain(chain *Handler)
	health.Checkable
}

Router routes consensus messages to the Handler of the consensus engine that the messages are intended for

type Timer

type Timer struct {
	Handler *Handler
	Preempt chan struct{}
}

func (*Timer) RegisterTimeout

func (t *Timer) RegisterTimeout(d time.Duration)