/
async_decoupler.go
62 lines (52 loc) · 1.58 KB
/
async_decoupler.go
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// Copyright (c) 2016-2017 Tigera, Inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package calc
import (
"context"
"github.com/sirupsen/logrus"
"github.com/projectcalico/libcalico-go/lib/backend/api"
)
func NewSyncerCallbacksDecoupler() *SyncerCallbacksDecoupler {
return &SyncerCallbacksDecoupler{
c: make(chan interface{}),
}
}
type SyncerCallbacksDecoupler struct {
c chan interface{}
}
func (a *SyncerCallbacksDecoupler) OnStatusUpdated(status api.SyncStatus) {
a.c <- status
}
func (a *SyncerCallbacksDecoupler) OnUpdates(updates []api.Update) {
a.c <- updates
}
func (a *SyncerCallbacksDecoupler) SendTo(sink api.SyncerCallbacks) {
a.SendToContext(context.Background(), sink)
}
func (a *SyncerCallbacksDecoupler) SendToContext(cxt context.Context, sink api.SyncerCallbacks) {
for {
select {
case obj := <-a.c:
switch obj := obj.(type) {
case api.SyncStatus:
sink.OnStatusUpdated(obj)
case []api.Update:
sink.OnUpdates(obj)
}
case <-cxt.Done():
logrus.WithError(cxt.Err()).Info("Context asked us to stop")
return
}
}
}