micro-router-static/static.go
ben-toogood 8c99e62a6c router/static: implement noop watcher (#2031)
* router/static: implement noop watcher

* proxy/mucp: handle nil watcher
2021-01-16 00:32:56 +03:00

101 lines
1.9 KiB
Go

// Package static is a static router which returns the service name as the address + port
package static
import (
"fmt"
"net"
"github.com/micro/go-micro/v3/router"
)
var (
// DefaulPort is the port to append where nothing is set
DefaultPort = 8080
)
// NewRouter returns an initialized static router
func NewRouter(opts ...router.Option) router.Router {
options := router.DefaultOptions()
for _, o := range opts {
o(&options)
}
return &static{options}
}
type static struct {
options router.Options
}
func (s *static) Init(opts ...router.Option) error {
for _, o := range opts {
o(&s.options)
}
return nil
}
func (s *static) Options() router.Options {
return s.options
}
func (s *static) Table() router.Table {
return nil
}
func (s *static) Lookup(service string, opts ...router.LookupOption) ([]router.Route, error) {
options := router.NewLookup(opts...)
_, _, err := net.SplitHostPort(service)
if err == nil {
// use the address
options.Address = service
} else {
options.Address = fmt.Sprintf("%s:%d", service, DefaultPort)
}
return []router.Route{
router.Route{
Service: service,
Address: options.Address,
Gateway: options.Gateway,
Network: options.Network,
Router: options.Router,
},
}, nil
}
// Watch will return a noop watcher
func (s *static) Watch(opts ...router.WatchOption) (router.Watcher, error) {
return &watcher{
events: make(chan *router.Event),
}, nil
}
func (s *static) Close() error {
return nil
}
func (s *static) String() string {
return "static"
}
// watcher is a noop implementation
type watcher struct {
events chan *router.Event
}
// Next is a blocking call that returns watch result
func (w *watcher) Next() (*router.Event, error) {
e := <-w.events
return e, nil
}
// Chan returns event channel
func (w *watcher) Chan() (<-chan *router.Event, error) {
return w.events, nil
}
// Stop stops watcher
func (w *watcher) Stop() {
return
}