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notifee_set.go
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/
notifee_set.go
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// Copyright (C) 2021-2023 Chronicle Labs, Inc.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package sets
import (
"sync"
"github.com/libp2p/go-libp2p/core/network"
"github.com/multiformats/go-multiaddr"
)
// NotifeeSet implements the network.Notifiee and allow to aggregate
// multiple instances of this interface.
type NotifeeSet struct {
mu sync.RWMutex
notifees []network.Notifiee
}
// NewNotifeeSet creates new instance of the NotifeeSet.
func NewNotifeeSet() *NotifeeSet {
return &NotifeeSet{}
}
// Add adds new network.Notifiee to the set.
func (n *NotifeeSet) Add(notifees ...network.Notifiee) {
n.mu.Lock()
defer n.mu.Unlock()
n.notifees = append(n.notifees, notifees...)
}
// Remove removes network.Notifiee from the set if already added.
func (n *NotifeeSet) Remove(notifees ...network.Notifiee) {
n.mu.Lock()
defer n.mu.Unlock()
var notifeesDiff []network.Notifiee
for _, a := range n.notifees {
f := false
for _, b := range notifees {
if a == b {
f = true
break
}
}
if !f {
notifeesDiff = append(notifeesDiff, a)
}
}
n.notifees = notifeesDiff
}
// Listen implements the network.Notifiee interface.
func (n *NotifeeSet) Listen(network network.Network, maddr multiaddr.Multiaddr) {
n.mu.RLock()
defer n.mu.RUnlock()
for _, notifee := range n.notifees {
notifee.Listen(network, maddr)
}
}
// ListenClose implements the network.Notifiee interface.
func (n *NotifeeSet) ListenClose(network network.Network, maddr multiaddr.Multiaddr) {
n.mu.RLock()
defer n.mu.RUnlock()
for _, notifee := range n.notifees {
notifee.ListenClose(network, maddr)
}
}
// Connected implements the network.Notifiee interface.
func (n *NotifeeSet) Connected(network network.Network, conn network.Conn) {
n.mu.RLock()
defer n.mu.RUnlock()
for _, notifee := range n.notifees {
notifee.Connected(network, conn)
}
}
// Disconnected implements the network.Notifiee interface.
func (n *NotifeeSet) Disconnected(network network.Network, conn network.Conn) {
n.mu.RLock()
defer n.mu.RUnlock()
for _, notifee := range n.notifees {
notifee.Disconnected(network, conn)
}
}
var _ network.Notifiee = (*NotifeeSet)(nil)