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discovery.go
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discovery.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 nacos
import (
"github.com/arana-db/arana/pkg/config"
"github.com/arana-db/arana/pkg/registry/base"
)
// NacosV2Discovery is a nacos service discovery.
// It always returns the registered servers in etcd.
type NacosV2Discovery struct {
client *NacosServiceClient
}
// NewNacosV2Discovery returns a new NacosV2Discovery.
func NewNacosV2Discovery(options map[string]interface{}) (base.Discovery, error) {
client, err := NewNacosServiceClient(options)
if err != nil {
return nil, err
}
return &NacosV2Discovery{client: client}, nil
}
// GetServices returns the servers
func (nd *NacosV2Discovery) GetServices() []*base.ServiceInstance {
instances := nd.client.SelectAllServiceInstances()
result := make([]*base.ServiceInstance, 0, len(instances))
for _, instance := range instances {
result = append(result, &base.ServiceInstance{
ID: instance.InstanceId,
Name: instance.ServiceName,
Version: "",
Endpoint: &config.Listener{
ProtocolType: instance.Metadata[_protocolType],
SocketAddress: &config.SocketAddress{
Address: instance.Ip,
Port: int(instance.Port),
},
ServerVersion: instance.Metadata[_serverVersion],
},
})
}
return result
}
// WatchService returns a nil chan.
func (nd *NacosV2Discovery) WatchService() <-chan []*base.ServiceInstance {
// TODO will support later
return nil
}
func (nd *NacosV2Discovery) Close() {
// TODO will support later
nd.client.CloseClient()
}