/
request.go
68 lines (60 loc) · 2.1 KB
/
request.go
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// Copyright © 2019 The Things Network Foundation, The Things Industries B.V.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package rpcmetadata
import (
"context"
"go.thethings.network/lorawan-stack/v3/pkg/errors"
"google.golang.org/grpc"
"google.golang.org/grpc/metadata"
)
// GetRequestMetadata returns the request metadata with per-rpc credentials
func (m MD) GetRequestMetadata(ctx context.Context, uri ...string) (map[string]string, error) {
md := make(map[string]string)
if m.ID != "" {
md["id"] = m.ID
}
if m.AuthType != "" && m.AuthValue != "" {
md["authorization"] = m.AuthType + " " + m.AuthValue
}
return md, nil
}
var errUnauthenticated = errors.DefineUnauthenticated("unauthenticated", "the context is not authenticated")
// WithForwardedAuth returns a grpc.CallOption with authentication from the incoming context ctx.
func WithForwardedAuth(ctx context.Context, allowInsecure bool) (grpc.CallOption, error) {
md := FromIncomingContext(ctx)
if md.AuthType == "" || md.AuthValue == "" {
return nil, errUnauthenticated.New()
}
md.AllowInsecure = allowInsecure
return grpc.PerRPCCredentials(md), nil
}
const requestIDKey = "x-request-id"
// WithForwardedRequestID forwards the incoming request ID to outgoing RPCs.
func WithForwardedRequestID(ctx context.Context) context.Context {
inMD, ok := metadata.FromIncomingContext(ctx)
if !ok {
return ctx
}
outMD, _ := metadata.FromOutgoingContext(ctx)
requestID := inMD.Get(requestIDKey)
if len(requestID) == 0 {
return ctx
}
return metadata.NewOutgoingContext(ctx, metadata.Join(
outMD,
metadata.MD{
requestIDKey: requestID,
},
))
}