/
manager_server.go
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/
manager_server.go
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// Copyright © 2017 The Things Network
// Use of this source code is governed by the MIT license that can be found in the LICENSE file.
package broker
import (
"fmt"
"time"
pb "github.com/TheThingsNetwork/api/broker"
"github.com/TheThingsNetwork/api/discovery"
"github.com/TheThingsNetwork/api/protocol/lorawan"
pb_lorawan "github.com/TheThingsNetwork/api/protocol/lorawan"
"github.com/TheThingsNetwork/go-account-lib/claims"
"github.com/TheThingsNetwork/go-account-lib/rights"
"github.com/TheThingsNetwork/go-utils/grpc/ttnctx"
"github.com/TheThingsNetwork/ttn/api/ratelimit"
"github.com/TheThingsNetwork/ttn/utils/errors"
"github.com/gogo/protobuf/types"
"golang.org/x/net/context" // See https://github.com/grpc/grpc-go/issues/711"
"google.golang.org/grpc"
"google.golang.org/grpc/codes"
)
type brokerManager struct {
broker *broker
deviceManager pb_lorawan.DeviceManagerClient
devAddrManager pb_lorawan.DevAddrManagerClient
clientRate *ratelimit.Registry
}
func (b *brokerManager) validateClient(ctx context.Context) (*claims.Claims, error) {
claims, err := b.broker.ValidateTTNAuthContext(ctx)
if err != nil {
return nil, err
}
if b.clientRate.Limit(claims.Subject) {
return claims, grpc.Errorf(codes.ResourceExhausted, "Rate limit for client reached")
}
return claims, nil
}
func (b *brokerManager) GetDevice(ctx context.Context, in *lorawan.DeviceIdentifier) (*lorawan.Device, error) {
if _, err := b.validateClient(ctx); err != nil {
return nil, err
}
token, _ := ttnctx.TokenFromIncomingContext(ctx)
res, err := b.deviceManager.GetDevice(ttnctx.OutgoingContextWithToken(ctx, token), in)
if err != nil {
return nil, errors.Wrap(errors.FromGRPCError(err), "NetworkServer did not return device")
}
return res, nil
}
func (b *brokerManager) SetDevice(ctx context.Context, in *lorawan.Device) (*types.Empty, error) {
if _, err := b.validateClient(ctx); err != nil {
return nil, err
}
token, _ := ttnctx.TokenFromIncomingContext(ctx)
res, err := b.deviceManager.SetDevice(ttnctx.OutgoingContextWithToken(ctx, token), in)
if err != nil {
return nil, errors.Wrap(errors.FromGRPCError(err), "NetworkServer did not set device")
}
return res, nil
}
func (b *brokerManager) DeleteDevice(ctx context.Context, in *lorawan.DeviceIdentifier) (*types.Empty, error) {
if _, err := b.validateClient(ctx); err != nil {
return nil, err
}
token, _ := ttnctx.TokenFromIncomingContext(ctx)
res, err := b.deviceManager.DeleteDevice(ttnctx.OutgoingContextWithToken(ctx, token), in)
if err != nil {
return nil, errors.Wrap(errors.FromGRPCError(err), "NetworkServer did not delete device")
}
return res, nil
}
func (b *brokerManager) RegisterApplicationHandler(ctx context.Context, in *pb.ApplicationHandlerRegistration) (*types.Empty, error) {
claims, err := b.broker.Component.ValidateTTNAuthContext(ctx)
if err != nil {
return nil, err
}
if err := in.Validate(); err != nil {
return nil, errors.Wrap(err, "Invalid Application Handler Registration")
}
if !claims.AppRight(in.AppID, rights.AppSettings) {
return nil, errors.NewErrPermissionDenied("No access to this application")
}
// Add Handler in local cache
handler, err := b.broker.Discovery.Get("handler", in.HandlerID)
if err != nil {
return nil, errors.NewErrInternal("Could not get Handler Announcement")
}
handler.Metadata = append(handler.Metadata, &discovery.Metadata{Metadata: &discovery.Metadata_AppID{
AppID: in.AppID,
}})
return &types.Empty{}, nil
}
func (b *brokerManager) GetPrefixes(ctx context.Context, in *lorawan.PrefixesRequest) (*lorawan.PrefixesResponse, error) {
res, err := b.devAddrManager.GetPrefixes(ctx, in)
if err != nil {
return nil, errors.Wrap(errors.FromGRPCError(err), "NetworkServer did not return prefixes")
}
return res, nil
}
func (b *brokerManager) GetDevAddr(ctx context.Context, in *lorawan.DevAddrRequest) (*lorawan.DevAddrResponse, error) {
res, err := b.devAddrManager.GetDevAddr(ctx, in)
if err != nil {
return nil, errors.Wrap(errors.FromGRPCError(err), "NetworkServer did not return DevAddr")
}
return res, nil
}
func (b *brokerManager) GetStatus(ctx context.Context, in *pb.StatusRequest) (*pb.Status, error) {
if b.broker.Identity.ID != "dev" {
claims, err := b.broker.ValidateTTNAuthContext(ctx)
if err != nil {
return nil, errors.Wrap(err, "No access")
}
if !claims.ComponentAccess(b.broker.Identity.ID) {
return nil, errors.NewErrPermissionDenied(fmt.Sprintf("Claims do not grant access to %s", b.broker.Identity.ID))
}
}
status := b.broker.GetStatus()
if status == nil {
return new(pb.Status), nil
}
return status, nil
}
func (b *broker) RegisterManager(s *grpc.Server) {
server := &brokerManager{
broker: b,
deviceManager: pb_lorawan.NewDeviceManagerClient(b.nsConn),
devAddrManager: pb_lorawan.NewDevAddrManagerClient(b.nsConn),
}
server.clientRate = ratelimit.NewRegistry(5000, time.Hour)
pb.RegisterBrokerManagerServer(s, server)
lorawan.RegisterDeviceManagerServer(s, server)
lorawan.RegisterDevAddrManagerServer(s, server)
}