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1 | /* |
2 | * | |
3 | * Copyright 2014 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 peer defines various peer information associated with RPCs and | |
20 | // corresponding utils. | |
21 | package peer | |
22 | ||
23 | import ( | |
107c1cdb | 24 | "context" |
15c0b25d AP |
25 | "net" |
26 | ||
15c0b25d AP |
27 | "google.golang.org/grpc/credentials" |
28 | ) | |
29 | ||
30 | // Peer contains the information of the peer for an RPC, such as the address | |
31 | // and authentication information. | |
32 | type Peer struct { | |
33 | // Addr is the peer address. | |
34 | Addr net.Addr | |
35 | // AuthInfo is the authentication information of the transport. | |
36 | // It is nil if there is no transport security being used. | |
37 | AuthInfo credentials.AuthInfo | |
38 | } | |
39 | ||
40 | type peerKey struct{} | |
41 | ||
42 | // NewContext creates a new context with peer information attached. | |
43 | func NewContext(ctx context.Context, p *Peer) context.Context { | |
44 | return context.WithValue(ctx, peerKey{}, p) | |
45 | } | |
46 | ||
47 | // FromContext returns the peer information in ctx if it exists. | |
48 | func FromContext(ctx context.Context) (p *Peer, ok bool) { | |
49 | p, ok = ctx.Value(peerKey{}).(*Peer) | |
50 | return | |
51 | } |