66ff1fcd40
This commit replaces the timestamp based state system with a new one that has update channels directly to the connected nodes. It will send an update to all listening clients via the polling mechanism. It introduces a new package notifier, which has a concurrency safe manager for all our channels to the connected nodes. Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
55 lines
830 B
Go
55 lines
830 B
Go
package notifier
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import (
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"sync"
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"github.com/juanfont/headscale/hscontrol/util"
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)
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type Notifier struct {
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l sync.RWMutex
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nodes map[string]chan<- struct{}
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}
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func NewNotifier() *Notifier {
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return &Notifier{}
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}
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func (n *Notifier) AddNode(machineKey string, c chan<- struct{}) {
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n.l.Lock()
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defer n.l.Unlock()
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if n.nodes == nil {
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n.nodes = make(map[string]chan<- struct{})
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}
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n.nodes[machineKey] = c
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}
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func (n *Notifier) RemoveNode(machineKey string) {
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n.l.Lock()
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defer n.l.Unlock()
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if n.nodes == nil {
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return
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}
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delete(n.nodes, machineKey)
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}
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func (n *Notifier) NotifyAll() {
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n.NotifyWithIgnore()
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}
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func (n *Notifier) NotifyWithIgnore(ignore ...string) {
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n.l.RLock()
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defer n.l.RUnlock()
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for key, c := range n.nodes {
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if util.IsStringInSlice(ignore, key) {
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continue
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}
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c <- struct{}{}
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}
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}
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