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40 lines
646 B
40 lines
646 B
3 years ago
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package registry
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import (
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"context"
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"github.com/go-kratos/kratos/v2/registry"
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)
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type watcher struct {
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event chan struct{}
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set *serviceSet
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// for cancel
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ctx context.Context
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cancel context.CancelFunc
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}
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func (w *watcher) Next() (services []*registry.ServiceInstance, err error) {
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select {
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case <-w.ctx.Done():
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err = w.ctx.Err()
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case <-w.event:
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}
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ss, ok := w.set.services.Load().([]*registry.ServiceInstance)
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if ok {
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for _, s := range ss {
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services = append(services, s)
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}
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}
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return
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}
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func (w *watcher) Stop() error {
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w.cancel()
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w.set.lock.Lock()
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defer w.set.lock.Unlock()
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delete(w.set.watcher, w)
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return nil
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}
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