// 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
}
// 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
}
// 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
}