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Published: Nov 29, 2021 License: MIT Imports: 1 Imported by: 0

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Types

type Actor

type Actor interface {
	// Act is to act the callback function when received the e event with the instance of Actor.
	Act(e *Event, callback func(m interface{}))
}

Actor represents a computation unit for actor pattern: https://www.brianstorti.com/the-actor-model/

type ActorContext

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

ActorContext is the context of the Actors.

func NewActorContext

func NewActorContext() *ActorContext

NewActorContext makes a new instance of ActorContext.

func (ActorContext) ActorStarted

func (ctx ActorContext) ActorStarted(a Actor) bool

ActorStarted checks whether the given Actor is started.

TODO(wangruichao@mtv.ac): need to consider concurrent safety.

func (ActorContext) Send

func (ctx ActorContext) Send(a Actor, e *Event, callback func(m interface{}))

Send sends instruction to the given Actor.

func (ActorContext) SendAndWait

func (ctx ActorContext) SendAndWait(a Actor, e *Event) interface{}

SendAndWait sends the given Event to the given Actor and wait until getting response.

func (ActorContext) StartActor

func (ctx ActorContext) StartActor(a Actor)

StartActor starts the process of the given Actor.

type Event

type Event struct {
	Topic EventTopic
	Extra interface{}
}

Event has a topic and a kind of message that needs to be processed by actors.

func NewEvent

func NewEvent(t EventTopic, e interface{}) *Event

NewEvent returns a new instance of Event.

type EventTopic

type EventTopic int

EventTopic represents the subscription topic

const (
	// EvtSyncStart is the flag of SyncStart Event.
	EvtSyncStart EventTopic = iota

	// EvtSyncComplete is the flag of SyncComplete Event.
	EvtSyncComplete

	// EvtSyncAbort is the flag of SyncAbort Event.
	EvtSyncAbort

	// EvtLedgerFallBehind is the flag of UpdateLedger Event.
	// It is triggered when the consensus module detects that the round is behind.
	EvtLedgerFallBehind

	// EvtTxPoolInitFinished is the flag of TxPoolInitFinished Event.
	EvtTxPoolInitFinished
)

type EventType

type EventType int

EventType represents types for an event, which is used for internal communication within the application.

const (
	// RPCGetAllShardsInfo nonsharded request
	// args: []
	// return: *btcjson.ShardsInfo
	RPCGetAllShardsInfo EventType = iota
	// RPCGetOutState sharded request (storage node only)
	// args: [*wire.Outpoint]
	// return: *wire.OutSrate
	RPCGetOutState
	// RPCGetBlockInfo sharded request
	// args: [startHeight int64]
	// return: []*wire.MsgBlock
	RPCGetBlockInfo
	// RPCGetSlimBlockInfo sharded request (storage node only)
	// args: [toShard shard.Index, height int64]
	// return: []*wire.SlimBlock
	RPCGetSlimBlockInfo
	// RPCGetBlockSliceInfo sharded request (storage node only)
	// args: [startHeight int64, optional<endHeight int64>]
	// return: []*wire.MsgBlock
	RPCGetBlockSliceInfo
	// RPCGetSlimBlockSliceInfo sharded request (storage node only)
	// args: [toShard shard.Index, startHeight int64, optional<endHeight int64>]
	// return: []*wire.SlimBlock
	RPCGetSlimBlockSliceInfo
	// RPCGetSCInfo sharded request, get smart contract info (storage node only)
	// args: [contractAddr multivacaddress.Address]
	// return: *wire.SmartContractInfo
	RPCGetSCInfo
	// RPCSendRawTx sharded request, send raw transaction (storage node only)
	// args [*wire.MsgTx]
	// return: nil
	RPCSendRawTx
)

type PubSubManager

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

PubSubManager represents a computation unit for pub-sub pattern: https://en.wikipedia.org/wiki/Publish–subscribe_pattern This is applied to internal in-shard broadcast communication.

func NewPubSubManager

func NewPubSubManager() *PubSubManager

NewPubSubManager gives a new PubSubManager.

func (*PubSubManager) Pub

func (pubSubMgr *PubSubManager) Pub(evt Event)

Pub publishes the given Event to the subscribers.

func (*PubSubManager) Sub

func (pubSubMgr *PubSubManager) Sub(subscr Subscriber)

Sub subscribes the given EventTopic with the given Subscriber.

TODO (wangruichao@mtv.ac): need to consider concurrent safety.

type RPCReq

type RPCReq struct {
	Event       EventType
	TargetShard shard.Index
	Args        []interface{}
	// contains filtered or unexported fields
}

RPCReq indicates request from RPCServer to application business logic.

func NewNonShardedRPCReq

func NewNonShardedRPCReq(t EventType, args ...interface{}) *RPCReq

NewNonShardedRPCReq creates a new RPCReq.

func NewShardedRPCReq

func NewShardedRPCReq(t EventType, s shard.Index, args ...interface{}) *RPCReq

NewShardedRPCReq creates a new RPCReq which targets for a particular shard.

func (*RPCReq) IsSharded

func (r *RPCReq) IsSharded() bool

IsSharded returns if the relevant RPCReq targets for any shard or not.

type RPCResp

type RPCResp struct {
	Status RPCStatus
	Result interface{}
}

RPCResp indicates a response from application business logic for the relevant RPCReq

func NewFailedRPCResp

func NewFailedRPCResp() *RPCResp

NewFailedRPCResp creates a new RPCResp with status RPCFail

func NewSuccessRPCResp

func NewSuccessRPCResp(r interface{}) *RPCResp

NewSuccessRPCResp creates a new RPCResp with status RPCOk

type RPCStatus

type RPCStatus int

RPCStatus indicates if a RPCReq to business logic succeeds or not.

const (
	// RPCOk indicates RPCStatus is OK
	RPCOk RPCStatus = iota
	// RPCFail indicates RPCStatus is a failure.
	RPCFail
)

type Subscriber

type Subscriber interface {
	Recv(evt Event)
}

Subscriber is a interface that contains a method for receiving Event.

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