github.com/hxx258456/ccgo@v0.0.5-0.20230213014102-48b35f46f66f/grpc/internal/xds_handshake_cluster.go (about)

     1  /*
     2   * Copyright 2021 gRPC authors.
     3   *
     4   * Licensed under the Apache License, Version 2.0 (the "License");
     5   * you may not use this file except in compliance with the License.
     6   * You may obtain a copy of the License at
     7   *
     8   *     http://www.apache.org/licenses/LICENSE-2.0
     9   *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   * See the License for the specific language governing permissions and
    14   * limitations under the License.
    15   */
    16  
    17  package internal
    18  
    19  import (
    20  	"github.com/hxx258456/ccgo/grpc/attributes"
    21  	"github.com/hxx258456/ccgo/grpc/resolver"
    22  )
    23  
    24  // handshakeClusterNameKey is the type used as the key to store cluster name in
    25  // the Attributes field of resolver.Address.
    26  type handshakeClusterNameKey struct{}
    27  
    28  // SetXDSHandshakeClusterName returns a copy of addr in which the Attributes field
    29  // is updated with the cluster name.
    30  func SetXDSHandshakeClusterName(addr resolver.Address, clusterName string) resolver.Address {
    31  	addr.Attributes = addr.Attributes.WithValue(handshakeClusterNameKey{}, clusterName)
    32  	return addr
    33  }
    34  
    35  // GetXDSHandshakeClusterName returns cluster name stored in attr.
    36  func GetXDSHandshakeClusterName(attr *attributes.Attributes) (string, bool) {
    37  	v := attr.Value(handshakeClusterNameKey{})
    38  	name, ok := v.(string)
    39  	return name, ok
    40  }