NewEventSystem creates a new manager that listens for event on the given mux, parses and filters them.

BlocksSubscription queries hashes for blocks that are imported.

chainEvChanSize is the size of channel listening to ChainEvent.

LastSubscription keeps track of the last index.

logsChanSize is the size of channel listening to LogsEvent.

LogsSubscription queries for new or removed (chain reorg) logs.

MinedAndPendingLogsSubscription queries for logs in mined and pending blocks.

PendingLogsSubscription queries for logs in pending blocks.

PendingTransactionsSubscription queries tx hashes for pending transactions entering the pending state.

rmLogsChanSize is the size of channel listening to RemovedLogsEvent.

SyncingSubscription queries syncResult when syncing.

syncSize is the size of channel listening to SubscribeSyncEvent.

txChanSize is the size of channel listening to NewTxsEvent.

UnknownSubscription indicates an unknown subscription type.

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

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

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