Example #1
0
// ExecuteVtworkerCommand is part of the vtworkerdatapb.VtworkerServer interface
func (s *VtworkerServer) ExecuteVtworkerCommand(args *vtworkerdatapb.ExecuteVtworkerCommandRequest, stream vtworkerservicepb.Vtworker_ExecuteVtworkerCommandServer) (err error) {
	// Please note that this panic handler catches only panics occuring in the code below.
	// The actual execution of the vtworker command takes place in a new go routine
	// (started in Instance.setAndStartWorker()) which has its own panic handler.
	defer servenv.HandlePanic("vtworker", &err)

	// Stream everything back what the Wrangler is logging.
	logstream := logutil.NewCallbackLogger(func(e *logutilpb.Event) {
		// If the client disconnects, we will just fail
		// to send the log events, but won't interrupt
		// the command.
		stream.Send(&vtworkerdatapb.ExecuteVtworkerCommandResponse{
			Event: e,
		})
	})
	// Let the Wrangler also log everything to the console (and thereby
	// effectively to a logfile) to make sure that any information or errors
	// is preserved in the logs in case the RPC or vtworker crashes.
	logger := logutil.NewTeeLogger(logstream, logutil.NewConsoleLogger())

	// create the wrangler
	wr := s.wi.CreateWrangler(logger)

	// execute the command
	worker, done, err := s.wi.RunCommand(args.Args, wr, false /*runFromCli*/)
	if err == nil && worker != nil && done != nil {
		err = s.wi.WaitForCommand(worker, done)
	}

	return err
}
Example #2
0
// ExecuteVtctlCommand is part of the pb.VtctlServer interface
func (s *VtctlServer) ExecuteVtctlCommand(args *pb.ExecuteVtctlCommandRequest, stream pbs.Vtctl_ExecuteVtctlCommandServer) (err error) {
	defer servenv.HandlePanic("vtctl", &err)

	// create a logger, send the result back to the caller
	logstream := logutil.NewChannelLogger(10)
	logger := logutil.NewTeeLogger(logstream, logutil.NewConsoleLogger())

	// send logs to the caller
	wg := sync.WaitGroup{}
	wg.Add(1)
	go func() {
		for e := range logstream {
			// Note we don't interrupt the loop here, as
			// we still need to flush and finish the
			// command, even if the channel to the client
			// has been broken. We'll just keep trying.
			stream.Send(&pb.ExecuteVtctlCommandResponse{
				Event: logutil.LoggerEventToProto(&e),
			})
		}
		wg.Done()
	}()

	// create the wrangler
	wr := wrangler.New(logger, s.ts, tmclient.NewTabletManagerClient(), time.Duration(args.LockTimeout))

	// execute the command
	err = vtctl.RunCommand(stream.Context(), wr, args.Args)

	// close the log channel, and wait for them all to be sent
	close(logstream)
	wg.Wait()

	return err
}
Example #3
0
// SetMaxRate implements the gRPC server interface. It sets the rate on all
// throttlers controlled by the manager.
func (s *Server) SetMaxRate(_ context.Context, request *throttlerdata.SetMaxRateRequest) (_ *throttlerdata.SetMaxRateResponse, err error) {
	defer servenv.HandlePanic("throttler", &err)

	names := s.manager.SetMaxRate(request.Rate)
	return &throttlerdata.SetMaxRateResponse{
		Names: names,
	}, nil
}
Example #4
0
// MaxRates implements the gRPC server interface. It returns the current max
// rate for each throttler of the process.
func (s *Server) MaxRates(_ context.Context, request *throttlerdata.MaxRatesRequest) (_ *throttlerdata.MaxRatesResponse, err error) {
	defer servenv.HandlePanic("throttler", &err)

	rates := s.manager.MaxRates()
	return &throttlerdata.MaxRatesResponse{
		Rates: rates,
	}, nil
}
Example #5
0
// ExecuteVtworkerCommand is part of the pb.VtworkerServer interface
func (s *VtworkerServer) ExecuteVtworkerCommand(args *pb.ExecuteVtworkerCommandRequest, stream pbs.Vtworker_ExecuteVtworkerCommandServer) (err error) {
	// Please note that this panic handler catches only panics occuring in the code below.
	// The actual execution of the vtworker command takes place in a new go routine
	// (started in Instance.setAndStartWorker()) which has its own panic handler.
	defer servenv.HandlePanic("vtworker", &err)

	// create a logger, send the result back to the caller
	logstream := logutil.NewChannelLogger(10)
	logger := logutil.NewTeeLogger(logstream, logutil.NewMemoryLogger())

	// send logs to the caller
	wg := sync.WaitGroup{}
	wg.Add(1)
	go func() {
		for e := range logstream {
			// Note we don't interrupt the loop here, as
			// we still need to flush and finish the
			// command, even if the channel to the client
			// has been broken. We'll just keep trying.
			stream.Send(&pb.ExecuteVtworkerCommandResponse{
				Event: &pbl.Event{
					Time: &pbl.Time{
						Seconds:     e.Time.Unix(),
						Nanoseconds: int32(e.Time.Nanosecond()),
					},
					Level: pbl.Level(e.Level),
					File:  e.File,
					Line:  int64(e.Line),
					Value: e.Value,
				},
			})
		}
		wg.Done()
	}()

	// create the wrangler
	wr := s.wi.CreateWrangler(logger)

	// execute the command
	if len(args.Args) >= 1 && args.Args[0] == "Reset" {
		err = s.wi.Reset()
	} else {
		// Make sure we use the global "err" variable and do not redeclare it in this scope.
		var worker worker.Worker
		var done chan struct{}
		worker, done, err = s.wi.RunCommand(args.Args, wr, false /*runFromCli*/)
		if err == nil {
			err = s.wi.WaitForCommand(worker, done)
		}
	}

	// close the log channel, and wait for them all to be sent
	close(logstream)
	wg.Wait()

	return err
}
Example #6
0
// ResetConfiguration implements the gRPC server interface.
func (s *Server) ResetConfiguration(_ context.Context, request *throttlerdata.ResetConfigurationRequest) (_ *throttlerdata.ResetConfigurationResponse, err error) {
	defer servenv.HandlePanic("throttler", &err)

	names, err := s.manager.ResetConfiguration(request.ThrottlerName)
	if err != nil {
		return nil, err
	}
	return &throttlerdata.ResetConfigurationResponse{
		Names: names,
	}, nil
}
Example #7
0
// ExecuteVtworkerCommand is part of the vtworkerdatapb.VtworkerServer interface
func (s *VtworkerServer) ExecuteVtworkerCommand(args *vtworkerdatapb.ExecuteVtworkerCommandRequest, stream vtworkerservicepb.Vtworker_ExecuteVtworkerCommandServer) (err error) {
	// Please note that this panic handler catches only panics occuring in the code below.
	// The actual execution of the vtworker command takes place in a new go routine
	// (started in Instance.setAndStartWorker()) which has its own panic handler.
	defer servenv.HandlePanic("vtworker", &err)

	// Stream everything back what the Wrangler is logging.
	logstream := logutil.NewChannelLogger(10)
	// Let the Wrangler also log everything to the console (and thereby
	// effectively to a logfile) to make sure that any information or errors
	// is preserved in the logs in case the RPC or vtworker crashes.
	logger := logutil.NewTeeLogger(logstream, logutil.NewConsoleLogger())

	// send logs to the caller
	wg := sync.WaitGroup{}
	wg.Add(1)
	go func() {
		for e := range logstream {
			// Note we don't interrupt the loop here, as
			// we still need to flush and finish the
			// command, even if the channel to the client
			// has been broken. We'll just keep trying.
			stream.Send(&vtworkerdatapb.ExecuteVtworkerCommandResponse{
				Event: e,
			})
		}
		wg.Done()
	}()

	// create the wrangler
	wr := s.wi.CreateWrangler(logger)

	// execute the command
	worker, done, err := s.wi.RunCommand(args.Args, wr, false /*runFromCli*/)
	if err == nil && worker != nil && done != nil {
		err = s.wi.WaitForCommand(worker, done)
	}

	// close the log channel, and wait for them all to be sent
	close(logstream)
	wg.Wait()

	return err
}
Example #8
0
// ExecuteVtctlCommand is part of the vtctldatapb.VtctlServer interface
func (s *VtctlServer) ExecuteVtctlCommand(args *vtctldatapb.ExecuteVtctlCommandRequest, stream vtctlservicepb.Vtctl_ExecuteVtctlCommandServer) (err error) {
	defer servenv.HandlePanic("vtctl", &err)

	// create a logger, send the result back to the caller
	logstream := logutil.NewCallbackLogger(func(e *logutilpb.Event) {
		// If the client disconnects, we will just fail
		// to send the log events, but won't interrupt
		// the command.
		stream.Send(&vtctldatapb.ExecuteVtctlCommandResponse{
			Event: e,
		})
	})
	logger := logutil.NewTeeLogger(logstream, logutil.NewConsoleLogger())

	// create the wrangler
	wr := wrangler.New(logger, s.ts, tmclient.NewTabletManagerClient())

	// execute the command
	return vtctl.RunCommand(stream.Context(), wr, args.Args)
}
Example #9
0
// ExecuteVtctlCommand is the server side method that will execute the query,
// and stream the results.
func (s *VtctlServer) ExecuteVtctlCommand(ctx context.Context, query *gorpcproto.ExecuteVtctlCommandArgs, sendReply func(interface{}) error) (err error) {
	defer servenv.HandlePanic("vtctl", &err)

	// create a logger, send the result back to the caller
	logstream := logutil.NewChannelLogger(10)
	logger := logutil.NewTeeLogger(logstream, logutil.NewConsoleLogger())

	// send logs to the caller
	wg := sync.WaitGroup{}
	wg.Add(1)
	go func() {
		for e := range logstream {
			// Note we don't interrupt the loop here, as
			// we still need to flush and finish the
			// command, even if the channel to the client
			// has been broken. We'll just keep trying.
			sendReply(&e)
		}
		wg.Done()
	}()

	// create the wrangler
	wr := wrangler.New(logger, s.ts, tmclient.NewTabletManagerClient(), query.LockTimeout)
	// FIXME(alainjobart) use a single context, copy the source info from it
	ctx, cancel := context.WithTimeout(context.TODO(), query.ActionTimeout)

	// execute the command
	err = vtctl.RunCommand(ctx, wr, query.Args)
	cancel()

	// close the log channel, and wait for them all to be sent
	close(logstream)
	wg.Wait()

	return err
}