/
transport_adapter.go
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/
transport_adapter.go
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// Copyright (c) 2017 Cisco and/or its affiliates.
//
// 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 syncbase
import (
"github.com/gogo/protobuf/proto"
"github.com/ligato/cn-infra/datasync"
"github.com/ligato/cn-infra/logging/logrus"
)
// Adapter implements datasync.TransportAdapter but allows the Watch/ Put functions to be optionally implemented.
type Adapter struct {
Watcher datasync.KeyValProtoWatcher
Publisher datasync.KeyProtoValWriter
}
// Watch uses Kafka KeyValProtoWatcher Topic KeyValProtoWatcher.
func (adapter *Adapter) Watch(resyncName string, changeChan chan datasync.ChangeEvent,
resyncChan chan datasync.ResyncEvent, keyPrefixes ...string) (datasync.WatchRegistration, error) {
if adapter.Watcher != nil {
return adapter.Watcher.Watch(resyncName, changeChan, resyncChan, keyPrefixes...)
}
logrus.DefaultLogger().Debug("KeyValProtoWatcher is nil")
return nil, nil
}
// Put uses Kafka KeyValProtoWatcher Topic KeyProtoValWriter.
func (adapter *Adapter) Put(key string, data proto.Message) error {
if adapter.Publisher != nil {
return adapter.Publisher.Put(key, data)
}
return nil
}