gitee.com/ks-custle/core-gm@v0.0.0-20230922171213-b83bdd97b62c/grpc/internal/resolver/passthrough/passthrough.go (about)

     1  /*
     2   *
     3   * Copyright 2017 gRPC authors.
     4   *
     5   * Licensed under the Apache License, Version 2.0 (the "License");
     6   * you may not use this file except in compliance with the License.
     7   * 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  
    19  // Package passthrough implements a pass-through resolver. It sends the target
    20  // name without scheme back to gRPC as resolved address.
    21  package passthrough
    22  
    23  import "gitee.com/ks-custle/core-gm/grpc/resolver"
    24  
    25  const scheme = "passthrough"
    26  
    27  type passthroughBuilder struct{}
    28  
    29  //goland:noinspection GoUnusedParameter
    30  func (*passthroughBuilder) Build(target resolver.Target, cc resolver.ClientConn, opts resolver.BuildOptions) (resolver.Resolver, error) {
    31  	r := &passthroughResolver{
    32  		target: target,
    33  		cc:     cc,
    34  	}
    35  	r.start()
    36  	return r, nil
    37  }
    38  
    39  func (*passthroughBuilder) Scheme() string {
    40  	return scheme
    41  }
    42  
    43  type passthroughResolver struct {
    44  	target resolver.Target
    45  	cc     resolver.ClientConn
    46  }
    47  
    48  func (r *passthroughResolver) start() {
    49  	// Endpoint is deprecated, use GetEndpoint() instead.
    50  	//_ = r.cc.UpdateState(resolver.State{Addresses: []resolver.Address{{Addr: r.target.Endpoint}}})
    51  	_ = r.cc.UpdateState(resolver.State{Addresses: []resolver.Address{{Addr: r.target.GetEndpoint()}}})
    52  }
    53  
    54  //goland:noinspection GoUnusedParameter
    55  func (*passthroughResolver) ResolveNow(o resolver.ResolveNowOptions) {}
    56  
    57  func (*passthroughResolver) Close() {}
    58  
    59  func init() {
    60  	resolver.Register(&passthroughBuilder{})
    61  }