158 lines
2.7 KiB
Go
158 lines
2.7 KiB
Go
package micro
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
"os/signal"
|
|
"syscall"
|
|
"time"
|
|
|
|
"github.com/micro/go-micro/client"
|
|
"github.com/micro/go-micro/cmd"
|
|
"github.com/micro/go-micro/context"
|
|
"github.com/micro/go-micro/server"
|
|
)
|
|
|
|
type service struct {
|
|
opts Options
|
|
}
|
|
|
|
func newService(opts ...Option) Service {
|
|
options := newOptions(opts...)
|
|
|
|
options.Client = &clientWrapper{
|
|
options.Client,
|
|
context.Metadata{
|
|
HeaderPrefix + "From-Service": options.Server.Options().Name,
|
|
},
|
|
}
|
|
|
|
return &service{
|
|
opts: options,
|
|
}
|
|
}
|
|
|
|
func (s *service) run(exit chan bool) {
|
|
if s.opts.RegisterInterval <= time.Duration(0) {
|
|
return
|
|
}
|
|
|
|
t := time.NewTicker(s.opts.RegisterInterval)
|
|
|
|
for {
|
|
select {
|
|
case <-t.C:
|
|
fmt.Println("heartbeat")
|
|
if err := s.opts.Server.Register(server.RegisterTTL(s.opts.RegisterTTL)); err != nil {
|
|
fmt.Println("FUCK", err)
|
|
}
|
|
case <-exit:
|
|
t.Stop()
|
|
return
|
|
}
|
|
}
|
|
}
|
|
|
|
func (s *service) Init(opts ...Option) {
|
|
// We might get more command flags or the action here
|
|
// This is pretty ugly, find a better way
|
|
options := newOptions()
|
|
options.Cmd = s.opts.Cmd
|
|
for _, o := range opts {
|
|
o(&options)
|
|
}
|
|
s.opts.Cmd = options.Cmd
|
|
|
|
// Initialise the command flags, overriding new service
|
|
s.opts.Cmd.Init(
|
|
cmd.Broker(&s.opts.Broker),
|
|
cmd.Registry(&s.opts.Registry),
|
|
cmd.Transport(&s.opts.Transport),
|
|
cmd.Client(&s.opts.Client),
|
|
cmd.Server(&s.opts.Server),
|
|
)
|
|
|
|
// Update any options to override command flags
|
|
for _, o := range opts {
|
|
o(&s.opts)
|
|
}
|
|
}
|
|
|
|
func (s *service) Options() Options {
|
|
return s.opts
|
|
}
|
|
|
|
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 "go-micro"
|
|
}
|
|
|
|
func (s *service) Start() error {
|
|
for _, fn := range s.opts.BeforeStart {
|
|
if err := fn(); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
if err := s.opts.Server.Start(); err != nil {
|
|
return err
|
|
}
|
|
|
|
if err := s.opts.Server.Register(server.RegisterTTL(s.opts.RegisterTTL)); err != nil {
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (s *service) Stop() error {
|
|
if err := s.opts.Server.Deregister(); err != nil {
|
|
return err
|
|
}
|
|
|
|
if err := s.opts.Server.Stop(); err != nil {
|
|
return err
|
|
}
|
|
|
|
var gerr error
|
|
for _, fn := range s.opts.AfterStop {
|
|
if err := fn(); err != nil {
|
|
// should we bail if it fails?
|
|
// other funcs will not be executed
|
|
// seems wrong
|
|
gerr = err
|
|
}
|
|
}
|
|
return gerr
|
|
}
|
|
|
|
func (s *service) Run() error {
|
|
if err := s.Start(); err != nil {
|
|
return err
|
|
}
|
|
|
|
// start reg loop
|
|
ex := make(chan bool)
|
|
go s.run(ex)
|
|
|
|
ch := make(chan os.Signal, 1)
|
|
signal.Notify(ch, syscall.SIGTERM, syscall.SIGINT, syscall.SIGKILL)
|
|
<-ch
|
|
|
|
// exit reg loop
|
|
close(ex)
|
|
|
|
if err := s.Stop(); err != nil {
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|