You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
46 lines
1.1 KiB
46 lines
1.1 KiB
package types
|
|
|
|
// Interface assertions
|
|
var _ TxEventPublisher = (*TxEventBuffer)(nil)
|
|
|
|
// TxEventBuffer is a buffer of events, which uses a slice to temporarily store
|
|
// events.
|
|
type TxEventBuffer struct {
|
|
next TxEventPublisher
|
|
capacity int
|
|
events []EventDataTx
|
|
}
|
|
|
|
// NewTxEventBuffer accepts a TxEventPublisher and returns a new buffer with the given
|
|
// capacity.
|
|
func NewTxEventBuffer(next TxEventPublisher, capacity int) *TxEventBuffer {
|
|
return &TxEventBuffer{
|
|
next: next,
|
|
capacity: capacity,
|
|
events: make([]EventDataTx, 0, capacity),
|
|
}
|
|
}
|
|
|
|
// Len returns the number of events cached.
|
|
func (b TxEventBuffer) Len() int {
|
|
return len(b.events)
|
|
}
|
|
|
|
// PublishEventTx buffers an event to be fired upon finality.
|
|
func (b *TxEventBuffer) PublishEventTx(e EventDataTx) error {
|
|
b.events = append(b.events, e)
|
|
return nil
|
|
}
|
|
|
|
// Flush publishes events by running next.PublishWithTags on all cached events.
|
|
// Blocks. Clears cached events.
|
|
func (b *TxEventBuffer) Flush() error {
|
|
for _, e := range b.events {
|
|
err := b.next.PublishEventTx(e)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
b.events = make([]EventDataTx, 0, b.capacity)
|
|
return nil
|
|
}
|