go.chromium.org/luci@v0.0.0-20240309015107-7cdc2e660f33/logdog/appengine/coordinator/endpoints/registration/service.go (about)

     1  // Copyright 2016 The LUCI Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package registration
    16  
    17  import (
    18  	"context"
    19  
    20  	"github.com/golang/protobuf/proto"
    21  	"google.golang.org/grpc/codes"
    22  	"google.golang.org/grpc/status"
    23  
    24  	"go.chromium.org/luci/grpc/grpcutil"
    25  	logdog "go.chromium.org/luci/logdog/api/endpoints/coordinator/registration/v1"
    26  	"go.chromium.org/luci/logdog/appengine/coordinator"
    27  	"go.chromium.org/luci/logdog/appengine/coordinator/endpoints"
    28  )
    29  
    30  // server is a service supporting log stream registration.
    31  type server struct{}
    32  
    33  // New creates a new authenticating ServicesServer instance.
    34  func New() logdog.RegistrationServer {
    35  	return &logdog.DecoratedRegistration{
    36  		Service: &server{},
    37  		Prelude: func(ctx context.Context, methodName string, req proto.Message) (context.Context, error) {
    38  			// Enter a datastore namespace based on the message type. All RPC messages
    39  			// in RegistrationServer must implement ProjectBoundMessage. We panic if
    40  			// they don't.
    41  			project := req.(endpoints.ProjectBoundMessage).GetMessageProject()
    42  			if project == "" {
    43  				return nil, status.Error(codes.InvalidArgument, "project is required")
    44  			}
    45  			if err := coordinator.WithProjectNamespace(&ctx, project); err != nil {
    46  				return nil, grpcutil.GRPCifyAndLogErr(ctx, err)
    47  			}
    48  			return ctx, nil
    49  		},
    50  	}
    51  }