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blockNotifier.go
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/
blockNotifier.go
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package track
import (
"sync"
"github.com/ElrondNetwork/elrond-go/data"
)
type blockNotifier struct {
mutNotarizedHeadersHandlers sync.RWMutex
notarizedHeadersHandlers []func(shardID uint32, headers []data.HeaderHandler, headersHashes [][]byte)
}
// NewBlockNotifier creates a block notifier object which implements blockNotifierHandler interface
func NewBlockNotifier() (*blockNotifier, error) {
bn := blockNotifier{}
bn.notarizedHeadersHandlers = make([]func(shardID uint32, headers []data.HeaderHandler, headersHashes [][]byte), 0)
return &bn, nil
}
func (bn *blockNotifier) callHandlers(shardID uint32, headers []data.HeaderHandler, headersHashes [][]byte) {
if len(headers) == 0 {
return
}
bn.mutNotarizedHeadersHandlers.RLock()
for _, handler := range bn.notarizedHeadersHandlers {
go handler(shardID, headers, headersHashes)
}
bn.mutNotarizedHeadersHandlers.RUnlock()
}
func (bn *blockNotifier) registerHandler(handler func(shardID uint32, headers []data.HeaderHandler, headersHashes [][]byte)) {
if handler == nil {
log.Warn("attempt to register a nil handler to a tracker object")
return
}
bn.mutNotarizedHeadersHandlers.Lock()
bn.notarizedHeadersHandlers = append(bn.notarizedHeadersHandlers, handler)
bn.mutNotarizedHeadersHandlers.Unlock()
}