events

Documentation

Index

• type Backend
• type BlockHash
• type BlockStatus
• type EventSystem
  • func NewEventSystem(backend Backend) *EventSystem
  • func (es *EventSystem) SubscribeConsensusInfo(consensusInfo chan *types.MinimalEpochConsensusInfo, epoch uint64) *Subscription
• type MockBackend
  • func (b *MockBackend) ConsensusInfoByEpochRange(fromEpoch uint64) []*eventTypes.MinimalEpochConsensusInfo
  • func (b *MockBackend) CurrentEpoch() uint64
  • func (b *MockBackend) FetchPanBlockStatus(slot uint64, hash common.Hash) (status Status, err error)
  • func (b *MockBackend) FetchVanBlockStatus(slot uint64, hash common.Hash) (status Status, err error)
  • func (b *MockBackend) GetPendingHashes() (response *PendingHashesResponse, err error)
  • func (mb *MockBackend) GetSlotStatus(ctx context.Context, slot uint64, requestType bool) Status
  • func (b *MockBackend) SubscribeNewEpochEvent(ch chan<- *eventTypes.MinimalEpochConsensusInfo) event.Subscription
• type PendingHashesResponse
• type PublicFilterAPI
  • func NewPublicFilterAPI(backend Backend, timeout time.Duration) *PublicFilterAPI
  • func (api *PublicFilterAPI) ConfirmPanBlockHashes(ctx context.Context, requests []*BlockHash) ([]*BlockStatus, error)
  • func (api *PublicFilterAPI) ConfirmVanBlockHashes(ctx context.Context, requests []*BlockHash) (response []*BlockStatus, err error)
  • func (api *PublicFilterAPI) GetPendingHashes() (response *PendingHashesResponse, err error)
  • func (api *PublicFilterAPI) MinimalConsensusInfo(ctx context.Context, epoch uint64) (*rpc.Subscription, error)
• type RealmPair
• type Status
  • func FromDBStatus(status generalTypes.Status) (eventStatus Status)
• type Subscription
  • func (sub *Subscription) Err() <-chan error
  • func (sub *Subscription) Unsubscribe()
• type Type

Types

type Backend

type Backend interface {
	CurrentEpoch() uint64
	ConsensusInfoByEpochRange(fromEpoch uint64) []*generalTypes.MinimalEpochConsensusInfo
	SubscribeNewEpochEvent(chan<- *generalTypes.MinimalEpochConsensusInfo) event.Subscription
	FetchPanBlockStatus(slot uint64, hash common.Hash) (status Status, err error)
	FetchVanBlockStatus(slot uint64, hash common.Hash) (status Status, err error)
	GetPendingHashes() (response *PendingHashesResponse, err error)

	GetSlotStatus(ctx context.Context, slot uint64, requestType bool) Status
}

type BlockHash

type BlockHash struct {
	Slot uint64      `json:"slot"`
	Hash common.Hash `json:"hash"`
}

type BlockStatus

type BlockStatus struct {
	BlockHash
	Status Status
}

type EventSystem

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

EventSystem creates subscriptions, processes events and broadcasts them to the subscription which match the subscription criteria.

func NewEventSystem

func NewEventSystem(backend Backend) *EventSystem

NewEventSystem creates a new manager that listens for event on the given mux, parses and filters them. It uses the all map to retrieve filter changes. The work loop holds its own index that is used to forward events to filters.

The returned manager has a loop that needs to be stopped with the Stop function or by stopping the given mux.

func (*EventSystem) SubscribeConsensusInfo

func (es *EventSystem) SubscribeConsensusInfo(consensusInfo chan *types.MinimalEpochConsensusInfo, epoch uint64) *Subscription

SubscribePendingTxs creates a subscription that writes transaction hashes for transactions that enter the transaction pool.

type MockBackend

type MockBackend struct {
	ConsensusInfoFeed event.Feed
	ConsensusInfos    []*eventTypes.MinimalEpochConsensusInfo
	CurEpoch          uint64
}

func (*MockBackend) ConsensusInfoByEpochRange

func (b *MockBackend) ConsensusInfoByEpochRange(fromEpoch uint64) []*eventTypes.MinimalEpochConsensusInfo

func (*MockBackend) CurrentEpoch

func (b *MockBackend) CurrentEpoch() uint64

func (*MockBackend) FetchPanBlockStatus

func (b *MockBackend) FetchPanBlockStatus(slot uint64, hash common.Hash) (status Status, err error)

func (*MockBackend) FetchVanBlockStatus

func (b *MockBackend) FetchVanBlockStatus(slot uint64, hash common.Hash) (status Status, err error)

func (*MockBackend) GetPendingHashes

func (b *MockBackend) GetPendingHashes() (response *PendingHashesResponse, err error)

func (*MockBackend) GetSlotStatus

func (mb *MockBackend) GetSlotStatus(ctx context.Context, slot uint64, requestType bool) Status

func (*MockBackend) SubscribeNewEpochEvent

func (b *MockBackend) SubscribeNewEpochEvent(ch chan<- *eventTypes.MinimalEpochConsensusInfo) event.Subscription

type PendingHashesResponse

type PendingHashesResponse struct {
	VanguardHashes    []*generalTypes.HeaderHash
	PandoraHashes     []*generalTypes.HeaderHash
	VanguardHashesLen int64
	PandoraHashesLen  int64
	UnixTime          int64
}

This is for debug purpose only

type PublicFilterAPI

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

PublicFilterAPI offers support to create and manage filters. This will allow external clients to retrieve various information related to the Ethereum protocol such als blocks, transactions and logs.

func NewPublicFilterAPI

func NewPublicFilterAPI(backend Backend, timeout time.Duration) *PublicFilterAPI

NewPublicFilterAPI returns a new PublicFilterAPI instance.

func (*PublicFilterAPI) ConfirmPanBlockHashes

func (api *PublicFilterAPI) ConfirmPanBlockHashes(
	ctx context.Context,
	requests []*BlockHash,
) ([]*BlockStatus, error)

ConfirmPanBlockHashes should be used to get the confirmation about known state of Pandora block hashes

func (*PublicFilterAPI) ConfirmVanBlockHashes

func (api *PublicFilterAPI) ConfirmVanBlockHashes(
	ctx context.Context,
	requests []*BlockHash,
) (response []*BlockStatus, err error)

ConfirmVanBlockHashes should be used to get the confirmation about known state of Vanguard block hashes

func (*PublicFilterAPI) GetPendingHashes

func (api *PublicFilterAPI) GetPendingHashes() (response *PendingHashesResponse, err error)

GetPendingHashes This is only for debug purpose

func (*PublicFilterAPI) MinimalConsensusInfo

func (api *PublicFilterAPI) MinimalConsensusInfo(ctx context.Context, epoch uint64) (*rpc.Subscription, error)

MinimalConsensusInfo

type RealmPair

type RealmPair struct {
	Slot          uint64
	VanguardHash  *generalTypes.HeaderHash
	PandoraHashes []*generalTypes.HeaderHash
}

type Status

type Status string

const (
	Pending  Status = "Pending"
	Verified Status = "Verified"
	Invalid  Status = "Invalid"
	Skipped  Status = "Skipped"
	Unknown  Status = "Unknown"
)

func FromDBStatus

func FromDBStatus(status generalTypes.Status) (eventStatus Status)

TODO: consider it to merge into only string-based statuses

type Subscription

type Subscription struct {
	ID rpc.ID
	// contains filtered or unexported fields
}

Subscription is created when the client registers itself for a particular event.

func (*Subscription) Err

func (sub *Subscription) Err() <-chan error

Err returns a channel that is closed when unsubscribed.

func (*Subscription) Unsubscribe

func (sub *Subscription) Unsubscribe()

Unsubscribe uninstalls the subscription from the event broadcast loop.

type Type

type Type byte

Type determines the kind of filter and is used to put the filter in to the correct bucket when added.

const (
	// UnknownSubscription indicates an unknown subscription type
	UnknownSubscription Type = iota

	// MinConsensusInfoSubscription
	MinConsensusInfoSubscription

	// LastSubscription keeps track of the last index
	LastIndexSubscription
)