LogDog: Add prefix registration endpoint.

appengine/logdog/coordinator/endpoints/registration/service.go

Index: appengine/logdog/coordinator/endpoints/registration/service.go
diff --git a/appengine/logdog/coordinator/endpoints/logs/service.go b/appengine/logdog/coordinator/endpoints/registration/service.go
similarity index 61%
copy from appengine/logdog/coordinator/endpoints/logs/service.go
copy to appengine/logdog/coordinator/endpoints/registration/service.go
index d7000031994f99c8adf8dbefc35b690bd7446902..b9b6daa805ffc001cb59e47cc53b80b97e92c7fa 100644
--- a/appengine/logdog/coordinator/endpoints/logs/service.go
+++ b/appengine/logdog/coordinator/endpoints/registration/service.go
@@ -1,37 +1,27 @@
-// Copyright 2015 The Chromium Authors. All rights reserved.
+// Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-package logs
+package registration
 
 import (
 	"github.com/golang/protobuf/proto"
 	"github.com/luci/luci-go/appengine/logdog/coordinator"
 	"github.com/luci/luci-go/appengine/logdog/coordinator/endpoints"
-	"github.com/luci/luci-go/common/api/logdog_coordinator/logs/v1"
+	"github.com/luci/luci-go/common/api/logdog_coordinator/registration/v1"
 	"github.com/luci/luci-go/common/config"
 	"github.com/luci/luci-go/common/grpcutil"
 	log "github.com/luci/luci-go/common/logging"
 	"golang.org/x/net/context"
 )
 
-// Server is the user-facing log access and query endpoint service.
-type server struct {
-	// resultLimit is the maximum number of query results to return in a
-	// single query. If zero, the default will be used.
-	//
-	// This is provided for testing purposes.
-	resultLimit int
-}
-
-// New creates a new authenticating LogsServer instance.
-func New() logdog.LogsServer {
-	return newService(&server{})
-}
+// server is a Cloud Endpoint service supporting log stream registration.
+type server struct{}
 
-func newService(svr *server) logdog.LogsServer {
-	return &logdog.DecoratedLogs{
-		Service: svr,
+// New creates a new authenticating ServicesServer instance.
+func New() logdog.RegistrationServer {
+	return &logdog.DecoratedRegistration{
+		Service: &server{},
 		Prelude: func(c context.Context, methodName string, req proto.Message) (context.Context, error) {
 			// Enter a datastore namespace based on the message type.
 			//
@@ -45,7 +35,7 @@ func newService(svr *server) logdog.LogsServer {
 				log.Fields{
 					"project": project,
 				}.Debugf(c, "User is accessing project.")
-				if err := coordinator.WithProjectNamespace(&c, project); err != nil {
+				if err := coordinator.WithProjectNamespace(&c, project, coordinator.NamespaceAccessWRITE); err != nil {
 					return nil, getGRPCError(c, err)
 				}
 			}
@@ -65,20 +55,10 @@ func getGRPCError(c context.Context, err error) error {
 		return grpcutil.PermissionDenied
 
 	case coordinator.IsMembershipError(err):
-		log.WithError(err).Errorf(c, "User does not have READ access to project.")
+		log.WithError(err).Errorf(c, "User does not have WRITE access to project.")
 		return grpcutil.PermissionDenied
 
 	default:
 		return grpcutil.Internal
 	}
 }
-
-func (s *server) limit(v int, d int) int {
-	if s.resultLimit > 0 {
-		d = s.resultLimit
-	}
-	if v <= 0 || v > d {
-		return d
-	}
-	return v
-}