197a3e7bb7
Add Google API and related dependencies for GCE discovery.
66 lines
2.4 KiB
Go
66 lines
2.4 KiB
Go
/*
|
|
*
|
|
* Copyright 2014, Google Inc.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are
|
|
* met:
|
|
*
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above
|
|
* copyright notice, this list of conditions and the following disclaimer
|
|
* in the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* * Neither the name of Google Inc. nor the names of its
|
|
* contributors may be used to endorse or promote products derived from
|
|
* this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
*/
|
|
|
|
// Package peer defines various peer information associated with RPCs and
|
|
// corresponding utils.
|
|
package peer
|
|
|
|
import (
|
|
"net"
|
|
|
|
"golang.org/x/net/context"
|
|
"google.golang.org/grpc/credentials"
|
|
)
|
|
|
|
// Peer contains the information of the peer for an RPC.
|
|
type Peer struct {
|
|
// Addr is the peer address.
|
|
Addr net.Addr
|
|
// AuthInfo is the authentication information of the transport.
|
|
// It is nil if there is no transport security being used.
|
|
AuthInfo credentials.AuthInfo
|
|
}
|
|
|
|
type peerKey struct{}
|
|
|
|
// NewContext creates a new context with peer information attached.
|
|
func NewContext(ctx context.Context, p *Peer) context.Context {
|
|
return context.WithValue(ctx, peerKey{}, p)
|
|
}
|
|
|
|
// FromContext returns the peer information in ctx if it exists.
|
|
func FromContext(ctx context.Context) (p *Peer, ok bool) {
|
|
p, ok = ctx.Value(peerKey{}).(*Peer)
|
|
return
|
|
}
|