filters

May 7, 2022

Changes in this version

type Backend

+ GetLogs func(ctx context.Context, blockHash common.Hash) ([][]*types.Log, error)

+ HeaderByHash func(ctx context.Context, blockHash common.Hash) (*types.Header, error)

+ SubscribeNewTxsEvent func(chan<- core.NewTxsEvent) event.Subscription

+ SubscribePendingLogsEvent func(ch chan<- []*types.Log) event.Subscription

type EventSystem

+ func (es *EventSystem) SubscribePendingTxs(hashes chan []common.Hash) *Subscription

type Filter

+ func NewBlockFilter(backend Backend, block common.Hash, addresses []common.Address, ...) *Filter

+ func NewRangeFilter(backend Backend, begin, end int64, addresses []common.Address, ...) *Filter

Oct 17, 2017

Changes in this version

type Backend

+ BloomStatus func() (uint64, uint64)

+ ServiceFilter func(ctx context.Context, session *bloombits.MatcherSession)

+ SubscribeChainEvent func(ch chan<- core.ChainEvent) event.Subscription

+ SubscribeLogsEvent func(ch chan<- []*types.Log) event.Subscription

+ SubscribeRemovedLogsEvent func(ch chan<- core.RemovedLogsEvent) event.Subscription

+ SubscribeTxPreEvent func(chan<- core.TxPreEvent) event.Subscription

type Filter

+ func (f *Filter) Logs(ctx context.Context) ([]*types.Log, error)

Jun 4, 2017

Changes in this version

+ var ErrInvalidSubscriptionID = errors.New("invalid id")

+ type Backend interface

+ ChainDb func() ethdb.Database

+ EventMux func() *event.TypeMux

+ GetReceipts func(ctx context.Context, blockHash common.Hash) (types.Receipts, error)

+ HeaderByNumber func(ctx context.Context, blockNr rpc.BlockNumber) (*types.Header, error)

+ type EventSystem struct

+ func NewEventSystem(mux *event.TypeMux, backend Backend, lightMode bool) *EventSystem

+ func (es *EventSystem) SubscribeLogs(crit FilterCriteria, logs chan []*types.Log) (*Subscription, error)

+ func (es *EventSystem) SubscribeNewHeads(headers chan *types.Header) *Subscription

+ func (es *EventSystem) SubscribePendingTxEvents(hashes chan common.Hash) *Subscription

+ type Filter struct

+ func New(backend Backend, useMipMap bool) *Filter

+ func (f *Filter) Find(ctx context.Context) (logs []*types.Log, err error)

+ func (f *Filter) FindOnce(ctx context.Context) ([]*types.Log, error)

+ func (f *Filter) SetAddresses(addr []common.Address)

+ func (f *Filter) SetBeginBlock(begin int64)

+ func (f *Filter) SetEndBlock(end int64)

+ func (f *Filter) SetTopics(topics [][]common.Hash)

+ type FilterCriteria struct

+ Addresses []common.Address

+ FromBlock *big.Int

+ ToBlock *big.Int

+ Topics [][]common.Hash

+ func (args *FilterCriteria) UnmarshalJSON(data []byte) error

+ type PublicFilterAPI struct

+ func NewPublicFilterAPI(backend Backend, lightMode bool) *PublicFilterAPI

+ func (api *PublicFilterAPI) GetFilterChanges(id rpc.ID) (interface{}, error)

+ func (api *PublicFilterAPI) GetFilterLogs(ctx context.Context, id rpc.ID) ([]*types.Log, error)

+ func (api *PublicFilterAPI) GetLogs(ctx context.Context, crit FilterCriteria) ([]*types.Log, error)

+ func (api *PublicFilterAPI) Logs(ctx context.Context, crit FilterCriteria) (*rpc.Subscription, error)

+ func (api *PublicFilterAPI) NewBlockFilter() rpc.ID

+ func (api *PublicFilterAPI) NewFilter(crit FilterCriteria) (rpc.ID, error)

+ func (api *PublicFilterAPI) NewHeads(ctx context.Context) (*rpc.Subscription, error)

+ func (api *PublicFilterAPI) NewPendingTransactionFilter() rpc.ID

+ func (api *PublicFilterAPI) NewPendingTransactions(ctx context.Context) (*rpc.Subscription, error)

+ func (api *PublicFilterAPI) UninstallFilter(id rpc.ID) bool

+ type Subscription struct

+ ID rpc.ID

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

+ func (sub *Subscription) Unsubscribe()

+ type Type byte

+ const BlocksSubscription

+ const LastIndexSubscription

+ const LogsSubscription

+ const MinedAndPendingLogsSubscription

+ const PendingLogsSubscription

+ const PendingTransactionsSubscription

+ const UnknownSubscription