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66 lines
2.4 KiB
66 lines
2.4 KiB
8 years ago
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/*
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*
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* Copyright 2014, Google Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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// Package peer defines various peer information associated with RPCs and
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// corresponding utils.
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package peer
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import (
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"net"
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"golang.org/x/net/context"
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"google.golang.org/grpc/credentials"
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)
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// Peer contains the information of the peer for an RPC.
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type Peer struct {
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// Addr is the peer address.
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Addr net.Addr
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// AuthInfo is the authentication information of the transport.
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// It is nil if there is no transport security being used.
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AuthInfo credentials.AuthInfo
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}
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type peerKey struct{}
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// NewContext creates a new context with peer information attached.
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func NewContext(ctx context.Context, p *Peer) context.Context {
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return context.WithValue(ctx, peerKey{}, p)
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}
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// FromContext returns the peer information in ctx if it exists.
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func FromContext(ctx context.Context) (p *Peer, ok bool) {
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p, ok = ctx.Value(peerKey{}).(*Peer)
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return
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}
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