dubbo.apache.org/dubbo-go/v3@v3.1.1/metadata/mapping/memory/service_name_mapping.go (about)

     1  /*
     2   * Licensed to the Apache Software Foundation (ASF) under one or more
     3   * contributor license agreements.  See the NOTICE file distributed with
     4   * this work for additional information regarding copyright ownership.
     5   * The ASF licenses this file to You under the Apache License, Version 2.0
     6   * (the "License"); you may not use this file except in compliance with
     7   * the License.  You may obtain a copy of the License at
     8   *
     9   *     http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the License for the specific language governing permissions and
    15   * limitations under the License.
    16   */
    17  
    18  package memory
    19  
    20  import (
    21  	"sync"
    22  )
    23  
    24  import (
    25  	gxset "github.com/dubbogo/gost/container/set"
    26  )
    27  
    28  import (
    29  	"dubbo.apache.org/dubbo-go/v3/common"
    30  	"dubbo.apache.org/dubbo-go/v3/common/extension"
    31  	"dubbo.apache.org/dubbo-go/v3/config"
    32  	"dubbo.apache.org/dubbo-go/v3/metadata/mapping"
    33  	"dubbo.apache.org/dubbo-go/v3/registry"
    34  )
    35  
    36  func init() {
    37  	extension.SetGlobalServiceNameMapping(GetNameMappingInstance)
    38  }
    39  
    40  type InMemoryServiceNameMapping struct{}
    41  
    42  func (i *InMemoryServiceNameMapping) Map(url *common.URL) error {
    43  	return nil
    44  }
    45  
    46  func (i *InMemoryServiceNameMapping) Get(url *common.URL, listener registry.MappingListener) (*gxset.HashSet, error) {
    47  	return gxset.NewSet(config.GetApplicationConfig().Name), nil
    48  }
    49  
    50  func (i *InMemoryServiceNameMapping) Remove(url *common.URL) error {
    51  	return nil
    52  }
    53  
    54  var (
    55  	serviceNameMappingInstance *InMemoryServiceNameMapping
    56  	serviceNameMappingOnce     sync.Once
    57  )
    58  
    59  func GetNameMappingInstance() mapping.ServiceNameMapping {
    60  	serviceNameMappingOnce.Do(func() {
    61  		serviceNameMappingInstance = &InMemoryServiceNameMapping{}
    62  	})
    63  	return serviceNameMappingInstance
    64  }