package micro import ( "fmt" rtime "runtime" "sync" cmd "github.com/unistack-org/micro-config-cmd" "github.com/unistack-org/micro/v3/broker" "github.com/unistack-org/micro/v3/client" "github.com/unistack-org/micro/v3/logger" "github.com/unistack-org/micro/v3/network/transport" "github.com/unistack-org/micro/v3/registry" "github.com/unistack-org/micro/v3/server" "github.com/unistack-org/micro/v3/store" ) type service struct { opts Options once sync.Once } func newService(opts ...Option) Service { options := newOptions(opts...) service := &service{opts: options} return service } func (s *service) Name() string { return s.opts.Server.Options().Name } // Init initialises options. Additionally it calls cmd.Init // which parses command line flags. cmd.Init is only called // on first Init. func (s *service) Init(opts ...Option) error { // process options for _, o := range opts { o(&s.opts) } if s.opts.Cmd != nil { // set cmd name if len(s.opts.Cmd.App().Name) == 0 { s.opts.Cmd.App().Name = s.Server().Options().Name } // Initialise the command options if err := s.opts.Cmd.Init( cmd.Auth(&s.opts.Auth), cmd.Broker(&s.opts.Broker), cmd.Registry(&s.opts.Registry), cmd.Runtime(&s.opts.Runtime), cmd.Transport(&s.opts.Transport), cmd.Client(&s.opts.Client), cmd.Config(&s.opts.Config), cmd.Server(&s.opts.Server), cmd.Store(&s.opts.Store), cmd.Profile(&s.opts.Profile), ); err != nil { return err } } if s.opts.Registry != nil { if err := s.opts.Registry.Init( registry.Context(s.opts.Context), ); err != nil { return err } } if s.opts.Broker != nil { if err := s.opts.Broker.Init( broker.Context(s.opts.Context), ); err != nil { return err } } if s.opts.Transport != nil { if err := s.opts.Transport.Init( transport.Context(s.opts.Context), ); err != nil { return err } } if s.opts.Store != nil { if err := s.opts.Store.Init( store.Context(s.opts.Context), ); err != nil { return err } } if s.opts.Server != nil { if err := s.opts.Server.Init( server.Context(s.opts.Context), ); err != nil { return err } } if s.opts.Client != nil { if err := s.opts.Client.Init( client.Context(s.opts.Context), ); err != nil { return err } } return nil } func (s *service) Options() Options { return s.opts } func (s *service) Broker() broker.Broker { return s.opts.Broker } func (s *service) Client() client.Client { return s.opts.Client } func (s *service) Server() server.Server { return s.opts.Server } func (s *service) String() string { return "micro" } func (s *service) Start() error { var err error if logger.V(logger.InfoLevel) { logger.Infof("Starting [service] %s", s.Name()) } for _, fn := range s.opts.BeforeStart { if err = fn(); err != nil { return err } } if s.opts.Server == nil { return fmt.Errorf("cant start nil server") } if s.opts.Registry != nil { if err := s.opts.Registry.Connect(s.opts.Context); err != nil { return err } } if s.opts.Broker != nil { if err := s.opts.Broker.Connect(s.opts.Context); err != nil { return err } } if s.opts.Store != nil { if err := s.opts.Store.Connect(s.opts.Context); err != nil { return err } } if err = s.opts.Server.Start(); err != nil { return err } for _, fn := range s.opts.AfterStart { if err = fn(); err != nil { return err } } return nil } func (s *service) Stop() error { if logger.V(logger.InfoLevel) { logger.Infof("Stoppping [service] %s", s.Name()) } var err error for _, fn := range s.opts.BeforeStop { if err = fn(); err != nil { return err } } if err = s.opts.Server.Stop(); err != nil { return err } for _, fn := range s.opts.AfterStop { if err = fn(); err != nil { return err } } if s.opts.Registry != nil { if err := s.opts.Registry.Disconnect(s.opts.Context); err != nil { return err } } if s.opts.Broker != nil { if err := s.opts.Broker.Disconnect(s.opts.Context); err != nil { return err } } if s.opts.Store != nil { if err := s.opts.Store.Disconnect(s.opts.Context); err != nil { return err } } return nil } func (s *service) Run() error { // start the profiler if s.opts.Profile != nil { // to view mutex contention rtime.SetMutexProfileFraction(5) // to view blocking profile rtime.SetBlockProfileRate(1) if err := s.opts.Profile.Start(); err != nil { return err } defer s.opts.Profile.Stop() } if s.opts.Cmd != nil { if err := s.opts.Cmd.Run(); err != nil { return err } } if err := s.Start(); err != nil { return err } select { // wait on context cancel case <-s.opts.Context.Done(): } return s.Stop() }