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adaptor.go
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adaptor.go
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// Licensed to the Apache Software Foundation (ASF) under one or more
// contributor license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright ownership.
// The ASF licenses this file to You 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 servicecenter
import (
"github.com/apache/servicecomb-service-center/server/core/backend"
"github.com/apache/servicecomb-service-center/server/plugin/discovery"
)
// Adaptor implements discovery.Adaptor.
// Adaptor does service discovery with other service-centers
// as it's registry.
type Adaptor struct {
discovery.Cacher
discovery.Indexer
}
func (se *Adaptor) Run() {
if r, ok := se.Cacher.(discovery.Runnable); ok {
r.Run()
}
}
func (se *Adaptor) Stop() {
if r, ok := se.Cacher.(discovery.Runnable); ok {
r.Stop()
}
}
func (se *Adaptor) Ready() <-chan struct{} {
if r, ok := se.Cacher.(discovery.Runnable); ok {
return r.Ready()
}
return closedCh
}
func NewServiceCenterAdaptor(t discovery.Type, cfg *discovery.Config) *Adaptor {
if t == backend.SCHEMA {
return &Adaptor{
Indexer: NewClusterIndexer(t, discovery.NullCache),
Cacher: discovery.NullCacher,
}
}
cache := discovery.NewKvCache(t.String(), cfg)
return &Adaptor{
Indexer: NewClusterIndexer(t, cache),
Cacher: BuildCacher(t, cfg, cache),
}
}