mirror of
https://github.com/etcd-io/etcd.git
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96cce208c2
This change makes the etcd package compatible with the existing Go ecosystem for module versioning. Used this tool to update package imports: https://github.com/KSubedi/gomove
76 lines
2.3 KiB
Go
76 lines
2.3 KiB
Go
// Copyright 2017 The etcd Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package grpcproxy
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import (
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"context"
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"go.etcd.io/etcd/v3/etcdserver/api/v3rpc/rpctypes"
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"google.golang.org/grpc"
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"google.golang.org/grpc/metadata"
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)
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func getAuthTokenFromClient(ctx context.Context) string {
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md, ok := metadata.FromIncomingContext(ctx)
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if ok {
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ts, ok := md[rpctypes.TokenFieldNameGRPC]
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if ok {
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return ts[0]
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}
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}
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return ""
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}
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func withClientAuthToken(ctx, ctxWithToken context.Context) context.Context {
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token := getAuthTokenFromClient(ctxWithToken)
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if token != "" {
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ctx = context.WithValue(ctx, rpctypes.TokenFieldNameGRPC, token)
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}
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return ctx
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}
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type proxyTokenCredential struct {
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token string
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}
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func (cred *proxyTokenCredential) RequireTransportSecurity() bool {
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return false
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}
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func (cred *proxyTokenCredential) GetRequestMetadata(ctx context.Context, s ...string) (map[string]string, error) {
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return map[string]string{
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rpctypes.TokenFieldNameGRPC: cred.token,
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}, nil
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}
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func AuthUnaryClientInterceptor(ctx context.Context, method string, req, reply interface{}, cc *grpc.ClientConn, invoker grpc.UnaryInvoker, opts ...grpc.CallOption) error {
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token := getAuthTokenFromClient(ctx)
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if token != "" {
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tokenCred := &proxyTokenCredential{token}
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opts = append(opts, grpc.PerRPCCredentials(tokenCred))
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}
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return invoker(ctx, method, req, reply, cc, opts...)
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}
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func AuthStreamClientInterceptor(ctx context.Context, desc *grpc.StreamDesc, cc *grpc.ClientConn, method string, streamer grpc.Streamer, opts ...grpc.CallOption) (grpc.ClientStream, error) {
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tokenif := ctx.Value(rpctypes.TokenFieldNameGRPC)
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if tokenif != nil {
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tokenCred := &proxyTokenCredential{tokenif.(string)}
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opts = append(opts, grpc.PerRPCCredentials(tokenCred))
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}
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return streamer(ctx, desc, cc, method, opts...)
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}
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