3 * Copyright 2017 gRPC authors.
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
9 * http://www.apache.org/licenses/LICENSE-2.0
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.
19 // Package passthrough implements a pass-through resolver. It sends the target
20 // name without scheme back to gRPC as resolved address.
23 import "google.golang.org/grpc/resolver"
25 const scheme = "passthrough"
27 type passthroughBuilder struct{}
29 func (*passthroughBuilder) Build(target resolver.Target, cc resolver.ClientConn, opts resolver.BuildOption) (resolver.Resolver, error) {
30 r := &passthroughResolver{
38 func (*passthroughBuilder) Scheme() string {
42 type passthroughResolver struct {
43 target resolver.Target
44 cc resolver.ClientConn
47 func (r *passthroughResolver) start() {
48 r.cc.NewAddress([]resolver.Address{{Addr: r.target.Endpoint}})
51 func (*passthroughResolver) ResolveNow(o resolver.ResolveNowOption) {}
53 func (*passthroughResolver) Close() {}
56 resolver.Register(&passthroughBuilder{})