Why Go
- Case Studies
  
  Common problems companies solve with Go
- Use Cases
  
  Stories about how and why companies use Go
- Security Policy
  
  How Go can help keep you secure by default
Learn
Docs
- Effective Go
  
  Tips for writing clear, performant, and idiomatic Go code
- Go User Manual
  
  A complete introduction to building software with Go
- Standard library
  
  Reference documentation for Go's standard library
- Release Notes
  
  Learn what's new in each Go release
Packages
Community
- Recorded Talks
  
  Videos from prior events
- Meetups
  
  Meet other local Go developers
- Conferences
  
  Learn and network with Go developers from around the world
- Go blog
  
  The Go project's official blog.
- Go project
  
  Get help and stay informed from Go
- Get connected

filters

package

Go to main page

Versions in this module

v1

v1.13.2

Mar 3, 2021

v1.13.1

Nov 17, 2020

Changes in this version

+ type Backend interface

+ BloomStatus func() (uint64, uint64)

+ ChainDb func() ethdb.Database

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

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

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

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

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

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

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

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

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

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

+ type EventSystem struct

+ func NewEventSystem(backend Backend, lightMode bool) *EventSystem

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

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

+ 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

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

+ type FilterCriteria ethereum.FilterQuery

+ 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

v1.3.2

Nov 24, 2015

v1.3.1

Oct 31, 2015

Changes in this version

+ type AccountChange struct

+ Address []byte

+ StateAddress []byte

+ type Filter struct

+ BlockCallback func(*types.Block, vm.Logs)

+ LogsCallback func(vm.Logs)

+ TransactionCallback func(*types.Transaction)

+ func New(db ethdb.Database) *Filter

+ func (self *Filter) FilterLogs(logs vm.Logs) vm.Logs

+ func (self *Filter) Find() vm.Logs

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

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

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

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

+ type FilterSystem struct

+ func NewFilterSystem(mux *event.TypeMux) *FilterSystem

+ func (fs *FilterSystem) Add(filter *Filter) (id int)

+ func (fs *FilterSystem) Get(id int) *Filter

+ func (fs *FilterSystem) Remove(id int)

+ func (fs *FilterSystem) Stop()