refactor and cleanup some router code
This commit is contained in:
Asim Aslam
parent
8b306780ee
commit
29c1076950
@ -1,6 +1,7 @@
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package router
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import (
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"errors"
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"fmt"
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"math"
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"sort"
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@ -16,8 +17,6 @@ import (
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var (
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// AdvertiseEventsTick is time interval in which the router advertises route updates
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AdvertiseEventsTick = 10 * time.Second
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// AdvertiseTableTick is time interval in which router advertises all routes found in routing table
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AdvertiseTableTick = 2 * time.Minute
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// DefaultAdvertTTL is default advertisement TTL
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DefaultAdvertTTL = 2 * time.Minute
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// AdvertSuppress is advert suppression threshold
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@ -37,14 +36,12 @@ var (
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// router implements default router
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type router struct {
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sync.RWMutex
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options Options
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status Status
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running bool
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table *table
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exit chan struct{}
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errChan chan error
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options Options
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exit chan bool
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eventChan chan *Event
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advertWg *sync.WaitGroup
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wg *sync.WaitGroup
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// advert subscribers
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sub sync.RWMutex
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@ -61,15 +58,9 @@ func newRouter(opts ...Option) Router {
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o(&options)
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}
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// set initial status to Stopped
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status := Status{Code: Stopped, Error: nil}
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return &router{
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options: options,
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status: status,
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table: newTable(),
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advertWg: &sync.WaitGroup{},
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wg: &sync.WaitGroup{},
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subscribers: make(map[string]chan *Advert),
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}
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}
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@ -125,7 +116,7 @@ func (r *router) manageRoute(route Route, action string) error {
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// manageServiceRoutes applies action to all routes of the service.
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// It returns error of the action fails with error.
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func (r *router) manageServiceRoutes(service *registry.Service, action string) error {
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func (r *router) manageRoutes(service *registry.Service, action string) error {
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// action is the routing table action
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action = strings.ToLower(action)
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@ -166,7 +157,7 @@ func (r *router) manageRegistryRoutes(reg registry.Registry, action string) erro
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}
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// manage the routes for all returned services
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for _, srv := range srvs {
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if err := r.manageServiceRoutes(srv, action); err != nil {
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if err := r.manageRoutes(srv, action); err != nil {
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return err
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}
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}
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@ -181,42 +172,35 @@ func (r *router) watchRegistry(w registry.Watcher) error {
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exit := make(chan bool)
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defer func() {
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// close the exit channel when the go routine finishes
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close(exit)
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}()
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// wait in the background for the router to stop
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// when the router stops, stop the watcher and exit
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r.wg.Add(1)
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go func() {
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defer w.Stop()
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defer r.wg.Done()
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select {
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case <-r.exit:
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return
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case <-exit:
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return
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case <-r.exit:
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return
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}
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}()
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var watchErr error
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for {
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res, err := w.Next()
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if err != nil {
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if err != registry.ErrWatcherStopped {
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watchErr = err
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return err
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}
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break
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}
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if err := r.manageServiceRoutes(res.Service, res.Action); err != nil {
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if err := r.manageRoutes(res.Service, res.Action); err != nil {
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return err
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}
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}
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return watchErr
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return nil
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}
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// watchTable watches routing table entries and either adds or deletes locally registered service to/from network registry
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@ -225,16 +209,13 @@ func (r *router) watchTable(w Watcher) error {
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exit := make(chan bool)
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defer func() {
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// close the exit channel when the go routine finishes
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close(exit)
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}()
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// wait in the background for the router to stop
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// when the router stops, stop the watcher and exit
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r.wg.Add(1)
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go func() {
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defer w.Stop()
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defer r.wg.Done()
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select {
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case <-r.exit:
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@ -244,13 +225,11 @@ func (r *router) watchTable(w Watcher) error {
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}
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}()
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var watchErr error
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for {
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event, err := w.Next()
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if err != nil {
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if err != ErrWatcherStopped {
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watchErr = err
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return err
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}
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break
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}
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@ -260,13 +239,11 @@ func (r *router) watchTable(w Watcher) error {
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close(r.eventChan)
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return nil
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case r.eventChan <- event:
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// process event
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}
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}
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// close event channel on error
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close(r.eventChan)
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return watchErr
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return nil
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}
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// publishAdvert publishes router advert to advert channel
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@ -292,36 +269,6 @@ func (r *router) publishAdvert(advType AdvertType, events []*Event) {
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r.sub.RUnlock()
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}
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// advertiseTable advertises the whole routing table to the network
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func (r *router) advertiseTable() error {
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// create table advertisement ticker
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ticker := time.NewTicker(AdvertiseTableTick)
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defer ticker.Stop()
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for {
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select {
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case <-ticker.C:
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// do full table flush
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events, err := r.flushRouteEvents(Update)
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if err != nil {
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return fmt.Errorf("failed flushing routes: %s", err)
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}
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// advertise routes to subscribers
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if len(events) > 0 {
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log.Debugf("Router flushing table with %d events: %s", len(events), r.options.Id)
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r.advertWg.Add(1)
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go func() {
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defer r.advertWg.Done()
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r.publishAdvert(RouteUpdate, events)
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}()
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}
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case <-r.exit:
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return nil
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}
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}
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}
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// advert contains a route event to be advertised
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type advert struct {
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// event received from routing table
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@ -392,17 +339,39 @@ func (r *router) advertiseEvents() error {
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adverts := make(adverts)
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// routing table watcher
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tableWatcher, err := r.Watch()
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w, err := r.Watch()
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if err != nil {
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return fmt.Errorf("failed creating routing table watcher: %v", err)
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return err
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}
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defer w.Stop()
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r.wg.Add(1)
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go func() {
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defer r.wg.Done()
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select {
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case r.errChan <- r.watchTable(tableWatcher):
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case <-r.exit:
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var err error
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for {
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select {
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case <-r.exit:
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return
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default:
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if w == nil {
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// routing table watcher
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w, err = r.Watch()
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if err != nil {
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log.Logf("Error creating watcher: %v", err)
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time.Sleep(time.Second)
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continue
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}
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}
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if err := r.watchTable(w); err != nil {
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log.Logf("Error watching table: %v", err)
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time.Sleep(time.Second)
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}
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// reset
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w.Stop()
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w = nil
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}
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}
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}()
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@ -446,11 +415,7 @@ func (r *router) advertiseEvents() error {
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// advertise events to subscribers
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if len(events) > 0 {
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log.Debugf("Router publishing %d events", len(events))
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r.advertWg.Add(1)
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go func() {
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defer r.advertWg.Done()
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r.publishAdvert(RouteUpdate, events)
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}()
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go r.publishAdvert(RouteUpdate, events)
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}
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case e := <-r.eventChan:
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// if event is nil, continue
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@ -502,65 +467,19 @@ func (r *router) advertiseEvents() error {
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a.penalty += Penalty
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log.Debugf("Router advert %d for route %s %s event penalty: %f", hash, a.event.Route.Service, a.event.Route.Address, a.penalty)
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case <-r.exit:
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// first wait for the advertiser to finish
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r.advertWg.Wait()
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w.Stop()
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return nil
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}
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}
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}
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// close closes exit channels
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func (r *router) close() {
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log.Debugf("Router closing remaining channels")
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// drain the advertise channel only if advertising
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if r.status.Code == Advertising {
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// drain the event channel
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for range r.eventChan {
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}
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// close advert subscribers
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for id, sub := range r.subscribers {
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select {
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case <-sub:
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default:
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}
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// close the channel
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close(sub)
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// delete the subscriber
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r.sub.Lock()
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delete(r.subscribers, id)
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r.sub.Unlock()
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}
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}
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// mark the router as Stopped and set its Error to nil
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r.status = Status{Code: Stopped, Error: nil}
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}
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// watchErrors watches router errors and takes appropriate actions
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func (r *router) watchErrors() {
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var err error
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select {
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case <-r.exit:
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return
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case err = <-r.errChan:
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}
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r.Lock()
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defer r.Unlock()
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// if the router is not stopped, stop it
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if r.status.Code != Stopped {
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// notify all goroutines to finish
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close(r.exit)
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// close all the channels
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r.close()
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// set the status error
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if err != nil {
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r.status.Error = err
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// drain all the events, only called on Stop
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func (r *router) drain() {
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for {
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select {
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case <-r.eventChan:
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default:
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return
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}
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}
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}
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@ -570,16 +489,13 @@ func (r *router) Start() error {
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r.Lock()
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defer r.Unlock()
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// only start if we're stopped
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if r.status.Code != Stopped {
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if r.running {
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return nil
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}
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// add all local service routes into the routing table
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if err := r.manageRegistryRoutes(r.options.Registry, "create"); err != nil {
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e := fmt.Errorf("failed adding registry routes: %s", err)
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r.status = Status{Code: Error, Error: e}
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return e
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return fmt.Errorf("failed adding registry routes: %s", err)
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}
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// add default gateway into routing table
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@ -595,42 +511,49 @@ func (r *router) Start() error {
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Metric: DefaultLocalMetric,
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}
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if err := r.table.Create(route); err != nil {
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e := fmt.Errorf("failed adding default gateway route: %s", err)
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r.status = Status{Code: Error, Error: e}
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return e
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return fmt.Errorf("failed adding default gateway route: %s", err)
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}
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}
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// create error and exit channels
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r.errChan = make(chan error, 1)
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r.exit = make(chan struct{})
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r.exit = make(chan bool)
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// registry watcher
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regWatcher, err := r.options.Registry.Watch()
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w, err := r.options.Registry.Watch()
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if err != nil {
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e := fmt.Errorf("failed creating registry watcher: %v", err)
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r.status = Status{Code: Error, Error: e}
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return e
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return fmt.Errorf("failed creating registry watcher: %v", err)
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}
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r.wg.Add(1)
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go func() {
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defer r.wg.Done()
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select {
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case r.errChan <- r.watchRegistry(regWatcher):
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case <-r.exit:
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var err error
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for {
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select {
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case <-r.exit:
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w.Stop()
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return
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default:
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if w == nil {
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w, err = r.options.Registry.Watch()
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if err != nil {
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log.Logf("failed creating registry watcher: %v", err)
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time.Sleep(time.Second)
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continue
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}
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}
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if err := r.watchRegistry(w); err != nil {
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log.Logf("Error watching the registry: %v", err)
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time.Sleep(time.Second)
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}
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w.Stop()
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w = nil
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}
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}
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}()
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// watch for errors and cleanup
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r.wg.Add(1)
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go func() {
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defer r.wg.Done()
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r.watchErrors()
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}()
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// mark router as Running
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r.status = Status{Code: Running, Error: nil}
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r.running = true
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return nil
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}
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@ -642,61 +565,46 @@ func (r *router) Advertise() (<-chan *Advert, error) {
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r.Lock()
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defer r.Unlock()
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switch r.status.Code {
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case Advertising:
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advertChan := make(chan *Advert, 128)
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r.subscribers[uuid.New().String()] = advertChan
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return advertChan, nil
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case Running:
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// list all the routes and pack them into even slice to advertise
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events, err := r.flushRouteEvents(Create)
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if err != nil {
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return nil, fmt.Errorf("failed to flush routes: %s", err)
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}
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// create event channels
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r.eventChan = make(chan *Event)
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// create advert channel
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advertChan := make(chan *Advert, 128)
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r.subscribers[uuid.New().String()] = advertChan
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// advertise your presence
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r.advertWg.Add(1)
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go func() {
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defer r.advertWg.Done()
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r.publishAdvert(Announce, events)
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}()
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r.wg.Add(1)
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go func() {
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defer r.wg.Done()
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select {
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case r.errChan <- r.advertiseEvents():
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case <-r.exit:
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}
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}()
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r.advertWg.Add(1)
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go func() {
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defer r.advertWg.Done()
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// advertise the whole routing table
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select {
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case r.errChan <- r.advertiseTable():
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case <-r.exit:
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}
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}()
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// mark router as Running and set its Error to nil
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r.status = Status{Code: Advertising, Error: nil}
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log.Debugf("Router starting to advertise")
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return advertChan, nil
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case Stopped:
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return nil, fmt.Errorf("not running")
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if !r.running {
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return nil, errors.New("not running")
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}
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return nil, fmt.Errorf("error: %s", r.status.Error)
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// already advertising
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if r.eventChan != nil {
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advertChan := make(chan *Advert, 128)
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r.subscribers[uuid.New().String()] = advertChan
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return advertChan, nil
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}
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// list all the routes and pack them into even slice to advertise
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events, err := r.flushRouteEvents(Create)
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if err != nil {
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return nil, fmt.Errorf("failed to flush routes: %s", err)
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}
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// create event channels
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r.eventChan = make(chan *Event)
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// create advert channel
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advertChan := make(chan *Advert, 128)
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r.subscribers[uuid.New().String()] = advertChan
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// advertise your presence
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go r.publishAdvert(Announce, events)
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go func() {
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select {
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case <-r.exit:
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return
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default:
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if err := r.advertiseEvents(); err != nil {
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log.Logf("Error adveritising events: %v", err)
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}
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}
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}()
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return advertChan, nil
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}
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// Process updates the routing table using the advertised values
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@ -774,48 +682,39 @@ func (r *router) Watch(opts ...WatchOption) (Watcher, error) {
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return r.table.Watch(opts...)
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}
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// Status returns router status
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func (r *router) Status() Status {
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r.RLock()
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defer r.RUnlock()
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// make a copy of the status
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status := r.status
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return status
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}
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// Stop stops the router
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func (r *router) Stop() error {
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r.Lock()
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defer r.Unlock()
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log.Debugf("Router shutting down")
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switch r.status.Code {
|
||||
case Stopped, Error:
|
||||
r.Unlock()
|
||||
return r.status.Error
|
||||
case Running, Advertising:
|
||||
// notify all goroutines to finish
|
||||
select {
|
||||
case <-r.exit:
|
||||
return nil
|
||||
default:
|
||||
close(r.exit)
|
||||
|
||||
// close all the channels
|
||||
// NOTE: close marks the router status as Stopped
|
||||
r.close()
|
||||
// extract the events
|
||||
r.drain()
|
||||
|
||||
// close advert subscribers
|
||||
for id, sub := range r.subscribers {
|
||||
// close the channel
|
||||
close(sub)
|
||||
|
||||
// delete the subscriber
|
||||
r.sub.Lock()
|
||||
delete(r.subscribers, id)
|
||||
r.sub.Unlock()
|
||||
}
|
||||
}
|
||||
r.Unlock()
|
||||
|
||||
log.Tracef("Router waiting for all goroutines to finish")
|
||||
|
||||
// wait for all goroutines to finish
|
||||
r.wg.Wait()
|
||||
|
||||
log.Debugf("Router successfully stopped")
|
||||
// remove event chan
|
||||
r.eventChan = nil
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// String prints debugging information about router
|
||||
func (r *router) String() string {
|
||||
return "memory"
|
||||
return "registry"
|
||||
}
|
||||
|
||||
@ -38,7 +38,6 @@ func TestRouterAdvertise(t *testing.T) {
|
||||
|
||||
// lower the advertise interval
|
||||
AdvertiseEventsTick = 500 * time.Millisecond
|
||||
AdvertiseTableTick = 1 * time.Second
|
||||
|
||||
if err := r.Start(); err != nil {
|
||||
t.Errorf("failed to start router: %v", err)
|
||||
|
||||
@ -34,8 +34,6 @@ type Router interface {
|
||||
Watch(opts ...WatchOption) (Watcher, error)
|
||||
// Start starts the router
|
||||
Start() error
|
||||
// Status returns router status
|
||||
Status() Status
|
||||
// Stop stops the router
|
||||
Stop() error
|
||||
// Returns the router implementation
|
||||
@ -73,34 +71,6 @@ const (
|
||||
Error
|
||||
)
|
||||
|
||||
func (s StatusCode) String() string {
|
||||
switch s {
|
||||
case Running:
|
||||
return "running"
|
||||
case Advertising:
|
||||
return "advertising"
|
||||
case Stopped:
|
||||
return "stopped"
|
||||
case Error:
|
||||
return "error"
|
||||
default:
|
||||
return "unknown"
|
||||
}
|
||||
}
|
||||
|
||||
// Status is router status
|
||||
type Status struct {
|
||||
// Code defines router status
|
||||
Code StatusCode
|
||||
// Error contains error description
|
||||
Error error
|
||||
}
|
||||
|
||||
// String returns human readable status
|
||||
func (s Status) String() string {
|
||||
return s.Code.String()
|
||||
}
|
||||
|
||||
// AdvertType is route advertisement type
|
||||
type AdvertType int
|
||||
|
||||
|
||||
@ -1,5 +1,5 @@
|
||||
// Code generated by protoc-gen-go. DO NOT EDIT.
|
||||
// source: router.proto
|
||||
// source: micro/go-micro/router/service/proto/router.proto
|
||||
|
||||
package go_micro_router
|
||||
|
||||
@ -43,7 +43,7 @@ func (x AdvertType) String() string {
|
||||
}
|
||||
|
||||
func (AdvertType) EnumDescriptor() ([]byte, []int) {
|
||||
return fileDescriptor_367072455c71aedc, []int{0}
|
||||
return fileDescriptor_c2b04f200fb3e806, []int{0}
|
||||
}
|
||||
|
||||
// EventType defines the type of event
|
||||
@ -72,7 +72,7 @@ func (x EventType) String() string {
|
||||
}
|
||||
|
||||
func (EventType) EnumDescriptor() ([]byte, []int) {
|
||||
return fileDescriptor_367072455c71aedc, []int{1}
|
||||
return fileDescriptor_c2b04f200fb3e806, []int{1}
|
||||
}
|
||||
|
||||
// Empty request
|
||||
@ -86,7 +86,7 @@ func (m *Request) Reset() { *m = Request{} }
|
||||
func (m *Request) String() string { return proto.CompactTextString(m) }
|
||||
func (*Request) ProtoMessage() {}
|
||||
func (*Request) Descriptor() ([]byte, []int) {
|
||||
return fileDescriptor_367072455c71aedc, []int{0}
|
||||
return fileDescriptor_c2b04f200fb3e806, []int{0}
|
||||
}
|
||||
|
||||
func (m *Request) XXX_Unmarshal(b []byte) error {
|
||||
@ -118,7 +118,7 @@ func (m *Response) Reset() { *m = Response{} }
|
||||
func (m *Response) String() string { return proto.CompactTextString(m) }
|
||||
func (*Response) ProtoMessage() {}
|
||||
func (*Response) Descriptor() ([]byte, []int) {
|
||||
return fileDescriptor_367072455c71aedc, []int{1}
|
||||
return fileDescriptor_c2b04f200fb3e806, []int{1}
|
||||
}
|
||||
|
||||
func (m *Response) XXX_Unmarshal(b []byte) error {
|
||||
@ -151,7 +151,7 @@ func (m *ListResponse) Reset() { *m = ListResponse{} }
|
||||
func (m *ListResponse) String() string { return proto.CompactTextString(m) }
|
||||
func (*ListResponse) ProtoMessage() {}
|
||||
func (*ListResponse) Descriptor() ([]byte, []int) {
|
||||
return fileDescriptor_367072455c71aedc, []int{2}
|
||||
return fileDescriptor_c2b04f200fb3e806, []int{2}
|
||||
}
|
||||
|
||||
func (m *ListResponse) XXX_Unmarshal(b []byte) error {
|
||||
@ -191,7 +191,7 @@ func (m *LookupRequest) Reset() { *m = LookupRequest{} }
|
||||
func (m *LookupRequest) String() string { return proto.CompactTextString(m) }
|
||||
func (*LookupRequest) ProtoMessage() {}
|
||||
func (*LookupRequest) Descriptor() ([]byte, []int) {
|
||||
return fileDescriptor_367072455c71aedc, []int{3}
|
||||
return fileDescriptor_c2b04f200fb3e806, []int{3}
|
||||
}
|
||||
|
||||
func (m *LookupRequest) XXX_Unmarshal(b []byte) error {
|
||||
@ -231,7 +231,7 @@ func (m *LookupResponse) Reset() { *m = LookupResponse{} }
|
||||
func (m *LookupResponse) String() string { return proto.CompactTextString(m) }
|
||||
func (*LookupResponse) ProtoMessage() {}
|
||||
func (*LookupResponse) Descriptor() ([]byte, []int) {
|
||||
return fileDescriptor_367072455c71aedc, []int{4}
|
||||
return fileDescriptor_c2b04f200fb3e806, []int{4}
|
||||
}
|
||||
|
||||
func (m *LookupResponse) XXX_Unmarshal(b []byte) error {
|
||||
@ -271,7 +271,7 @@ func (m *QueryRequest) Reset() { *m = QueryRequest{} }
|
||||
func (m *QueryRequest) String() string { return proto.CompactTextString(m) }
|
||||
func (*QueryRequest) ProtoMessage() {}
|
||||
func (*QueryRequest) Descriptor() ([]byte, []int) {
|
||||
return fileDescriptor_367072455c71aedc, []int{5}
|
||||
return fileDescriptor_c2b04f200fb3e806, []int{5}
|
||||
}
|
||||
|
||||
func (m *QueryRequest) XXX_Unmarshal(b []byte) error {
|
||||
@ -311,7 +311,7 @@ func (m *QueryResponse) Reset() { *m = QueryResponse{} }
|
||||
func (m *QueryResponse) String() string { return proto.CompactTextString(m) }
|
||||
func (*QueryResponse) ProtoMessage() {}
|
||||
func (*QueryResponse) Descriptor() ([]byte, []int) {
|
||||
return fileDescriptor_367072455c71aedc, []int{6}
|
||||
return fileDescriptor_c2b04f200fb3e806, []int{6}
|
||||
}
|
||||
|
||||
func (m *QueryResponse) XXX_Unmarshal(b []byte) error {
|
||||
@ -350,7 +350,7 @@ func (m *WatchRequest) Reset() { *m = WatchRequest{} }
|
||||
func (m *WatchRequest) String() string { return proto.CompactTextString(m) }
|
||||
func (*WatchRequest) ProtoMessage() {}
|
||||
func (*WatchRequest) Descriptor() ([]byte, []int) {
|
||||
return fileDescriptor_367072455c71aedc, []int{7}
|
||||
return fileDescriptor_c2b04f200fb3e806, []int{7}
|
||||
}
|
||||
|
||||
func (m *WatchRequest) XXX_Unmarshal(b []byte) error {
|
||||
@ -392,7 +392,7 @@ func (m *Advert) Reset() { *m = Advert{} }
|
||||
func (m *Advert) String() string { return proto.CompactTextString(m) }
|
||||
func (*Advert) ProtoMessage() {}
|
||||
func (*Advert) Descriptor() ([]byte, []int) {
|
||||
return fileDescriptor_367072455c71aedc, []int{8}
|
||||
return fileDescriptor_c2b04f200fb3e806, []int{8}
|
||||
}
|
||||
|
||||
func (m *Advert) XXX_Unmarshal(b []byte) error {
|
||||
@ -459,7 +459,7 @@ func (m *ProcessResponse) Reset() { *m = ProcessResponse{} }
|
||||
func (m *ProcessResponse) String() string { return proto.CompactTextString(m) }
|
||||
func (*ProcessResponse) ProtoMessage() {}
|
||||
func (*ProcessResponse) Descriptor() ([]byte, []int) {
|
||||
return fileDescriptor_367072455c71aedc, []int{9}
|
||||
return fileDescriptor_c2b04f200fb3e806, []int{9}
|
||||
}
|
||||
|
||||
func (m *ProcessResponse) XXX_Unmarshal(b []byte) error {
|
||||
@ -491,7 +491,7 @@ func (m *CreateResponse) Reset() { *m = CreateResponse{} }
|
||||
func (m *CreateResponse) String() string { return proto.CompactTextString(m) }
|
||||
func (*CreateResponse) ProtoMessage() {}
|
||||
func (*CreateResponse) Descriptor() ([]byte, []int) {
|
||||
return fileDescriptor_367072455c71aedc, []int{10}
|
||||
return fileDescriptor_c2b04f200fb3e806, []int{10}
|
||||
}
|
||||
|
||||
func (m *CreateResponse) XXX_Unmarshal(b []byte) error {
|
||||
@ -523,7 +523,7 @@ func (m *DeleteResponse) Reset() { *m = DeleteResponse{} }
|
||||
func (m *DeleteResponse) String() string { return proto.CompactTextString(m) }
|
||||
func (*DeleteResponse) ProtoMessage() {}
|
||||
func (*DeleteResponse) Descriptor() ([]byte, []int) {
|
||||
return fileDescriptor_367072455c71aedc, []int{11}
|
||||
return fileDescriptor_c2b04f200fb3e806, []int{11}
|
||||
}
|
||||
|
||||
func (m *DeleteResponse) XXX_Unmarshal(b []byte) error {
|
||||
@ -555,7 +555,7 @@ func (m *UpdateResponse) Reset() { *m = UpdateResponse{} }
|
||||
func (m *UpdateResponse) String() string { return proto.CompactTextString(m) }
|
||||
func (*UpdateResponse) ProtoMessage() {}
|
||||
func (*UpdateResponse) Descriptor() ([]byte, []int) {
|
||||
return fileDescriptor_367072455c71aedc, []int{12}
|
||||
return fileDescriptor_c2b04f200fb3e806, []int{12}
|
||||
}
|
||||
|
||||
func (m *UpdateResponse) XXX_Unmarshal(b []byte) error {
|
||||
@ -593,7 +593,7 @@ func (m *Event) Reset() { *m = Event{} }
|
||||
func (m *Event) String() string { return proto.CompactTextString(m) }
|
||||
func (*Event) ProtoMessage() {}
|
||||
func (*Event) Descriptor() ([]byte, []int) {
|
||||
return fileDescriptor_367072455c71aedc, []int{13}
|
||||
return fileDescriptor_c2b04f200fb3e806, []int{13}
|
||||
}
|
||||
|
||||
func (m *Event) XXX_Unmarshal(b []byte) error {
|
||||
@ -652,7 +652,7 @@ func (m *Query) Reset() { *m = Query{} }
|
||||
func (m *Query) String() string { return proto.CompactTextString(m) }
|
||||
func (*Query) ProtoMessage() {}
|
||||
func (*Query) Descriptor() ([]byte, []int) {
|
||||
return fileDescriptor_367072455c71aedc, []int{14}
|
||||
return fileDescriptor_c2b04f200fb3e806, []int{14}
|
||||
}
|
||||
|
||||
func (m *Query) XXX_Unmarshal(b []byte) error {
|
||||
@ -719,7 +719,7 @@ func (m *Route) Reset() { *m = Route{} }
|
||||
func (m *Route) String() string { return proto.CompactTextString(m) }
|
||||
func (*Route) ProtoMessage() {}
|
||||
func (*Route) Descriptor() ([]byte, []int) {
|
||||
return fileDescriptor_367072455c71aedc, []int{15}
|
||||
return fileDescriptor_c2b04f200fb3e806, []int{15}
|
||||
}
|
||||
|
||||
func (m *Route) XXX_Unmarshal(b []byte) error {
|
||||
@ -789,92 +789,6 @@ func (m *Route) GetMetric() int64 {
|
||||
return 0
|
||||
}
|
||||
|
||||
type Status struct {
|
||||
Code string `protobuf:"bytes,1,opt,name=code,proto3" json:"code,omitempty"`
|
||||
Error string `protobuf:"bytes,2,opt,name=error,proto3" json:"error,omitempty"`
|
||||
XXX_NoUnkeyedLiteral struct{} `json:"-"`
|
||||
XXX_unrecognized []byte `json:"-"`
|
||||
XXX_sizecache int32 `json:"-"`
|
||||
}
|
||||
|
||||
func (m *Status) Reset() { *m = Status{} }
|
||||
func (m *Status) String() string { return proto.CompactTextString(m) }
|
||||
func (*Status) ProtoMessage() {}
|
||||
func (*Status) Descriptor() ([]byte, []int) {
|
||||
return fileDescriptor_367072455c71aedc, []int{16}
|
||||
}
|
||||
|
||||
func (m *Status) XXX_Unmarshal(b []byte) error {
|
||||
return xxx_messageInfo_Status.Unmarshal(m, b)
|
||||
}
|
||||
func (m *Status) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
|
||||
return xxx_messageInfo_Status.Marshal(b, m, deterministic)
|
||||
}
|
||||
func (m *Status) XXX_Merge(src proto.Message) {
|
||||
xxx_messageInfo_Status.Merge(m, src)
|
||||
}
|
||||
func (m *Status) XXX_Size() int {
|
||||
return xxx_messageInfo_Status.Size(m)
|
||||
}
|
||||
func (m *Status) XXX_DiscardUnknown() {
|
||||
xxx_messageInfo_Status.DiscardUnknown(m)
|
||||
}
|
||||
|
||||
var xxx_messageInfo_Status proto.InternalMessageInfo
|
||||
|
||||
func (m *Status) GetCode() string {
|
||||
if m != nil {
|
||||
return m.Code
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
func (m *Status) GetError() string {
|
||||
if m != nil {
|
||||
return m.Error
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
type StatusResponse struct {
|
||||
Status *Status `protobuf:"bytes,1,opt,name=status,proto3" json:"status,omitempty"`
|
||||
XXX_NoUnkeyedLiteral struct{} `json:"-"`
|
||||
XXX_unrecognized []byte `json:"-"`
|
||||
XXX_sizecache int32 `json:"-"`
|
||||
}
|
||||
|
||||
func (m *StatusResponse) Reset() { *m = StatusResponse{} }
|
||||
func (m *StatusResponse) String() string { return proto.CompactTextString(m) }
|
||||
func (*StatusResponse) ProtoMessage() {}
|
||||
func (*StatusResponse) Descriptor() ([]byte, []int) {
|
||||
return fileDescriptor_367072455c71aedc, []int{17}
|
||||
}
|
||||
|
||||
func (m *StatusResponse) XXX_Unmarshal(b []byte) error {
|
||||
return xxx_messageInfo_StatusResponse.Unmarshal(m, b)
|
||||
}
|
||||
func (m *StatusResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
|
||||
return xxx_messageInfo_StatusResponse.Marshal(b, m, deterministic)
|
||||
}
|
||||
func (m *StatusResponse) XXX_Merge(src proto.Message) {
|
||||
xxx_messageInfo_StatusResponse.Merge(m, src)
|
||||
}
|
||||
func (m *StatusResponse) XXX_Size() int {
|
||||
return xxx_messageInfo_StatusResponse.Size(m)
|
||||
}
|
||||
func (m *StatusResponse) XXX_DiscardUnknown() {
|
||||
xxx_messageInfo_StatusResponse.DiscardUnknown(m)
|
||||
}
|
||||
|
||||
var xxx_messageInfo_StatusResponse proto.InternalMessageInfo
|
||||
|
||||
func (m *StatusResponse) GetStatus() *Status {
|
||||
if m != nil {
|
||||
return m.Status
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func init() {
|
||||
proto.RegisterEnum("go.micro.router.AdvertType", AdvertType_name, AdvertType_value)
|
||||
proto.RegisterEnum("go.micro.router.EventType", EventType_name, EventType_value)
|
||||
@ -894,56 +808,53 @@ func init() {
|
||||
proto.RegisterType((*Event)(nil), "go.micro.router.Event")
|
||||
proto.RegisterType((*Query)(nil), "go.micro.router.Query")
|
||||
proto.RegisterType((*Route)(nil), "go.micro.router.Route")
|
||||
proto.RegisterType((*Status)(nil), "go.micro.router.Status")
|
||||
proto.RegisterType((*StatusResponse)(nil), "go.micro.router.StatusResponse")
|
||||
}
|
||||
|
||||
func init() { proto.RegisterFile("router.proto", fileDescriptor_367072455c71aedc) }
|
||||
|
||||
var fileDescriptor_367072455c71aedc = []byte{
|
||||
// 693 bytes of a gzipped FileDescriptorProto
|
||||
0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x9c, 0x55, 0x4f, 0x4f, 0xdb, 0x4a,
|
||||
0x10, 0xb7, 0x93, 0xd8, 0x79, 0x99, 0x17, 0x8c, 0xdf, 0xe8, 0x09, 0xac, 0xb4, 0x40, 0xe4, 0x13,
|
||||
0x42, 0xc8, 0x54, 0xe9, 0xb5, 0xff, 0x02, 0xa5, 0xaa, 0x54, 0x0e, 0xad, 0x0b, 0xea, 0xd9, 0xd8,
|
||||
0x23, 0x6a, 0x91, 0xd8, 0x66, 0x77, 0x03, 0xca, 0xb9, 0x9f, 0xa6, 0xe7, 0x7e, 0xa4, 0x5e, 0xfb,
|
||||
0x21, 0x2a, 0xef, 0xae, 0x43, 0x88, 0x31, 0x12, 0x9c, 0xbc, 0xf3, 0xef, 0x37, 0xb3, 0x3b, 0xbf,
|
||||
0x19, 0x43, 0x9f, 0xe5, 0x33, 0x41, 0x2c, 0x28, 0x58, 0x2e, 0x72, 0x5c, 0xbf, 0xc8, 0x83, 0x69,
|
||||
0x1a, 0xb3, 0x3c, 0x50, 0x6a, 0xbf, 0x07, 0xdd, 0x90, 0xae, 0x66, 0xc4, 0x85, 0x0f, 0xf0, 0x4f,
|
||||
0x48, 0xbc, 0xc8, 0x33, 0x4e, 0xfe, 0x1b, 0xe8, 0x9f, 0xa4, 0x5c, 0x54, 0x32, 0x06, 0x60, 0xcb,
|
||||
0x00, 0xee, 0x99, 0xc3, 0xf6, 0xee, 0xbf, 0xa3, 0x8d, 0x60, 0x05, 0x28, 0x08, 0xcb, 0x4f, 0xa8,
|
||||
0xbd, 0xfc, 0xd7, 0xb0, 0x76, 0x92, 0xe7, 0x97, 0xb3, 0x42, 0x83, 0xe3, 0x3e, 0x58, 0x57, 0x33,
|
||||
0x62, 0x73, 0xcf, 0x1c, 0x9a, 0xf7, 0xc6, 0x7f, 0x29, 0xad, 0xa1, 0x72, 0xf2, 0xdf, 0x81, 0x53,
|
||||
0x85, 0x3f, 0xb1, 0x80, 0x57, 0xd0, 0x57, 0x88, 0x4f, 0xca, 0xff, 0x16, 0xd6, 0x74, 0xf4, 0x13,
|
||||
0xd3, 0x3b, 0xd0, 0xff, 0x16, 0x89, 0xf8, 0x7b, 0xf5, 0xb6, 0x3f, 0x4d, 0xb0, 0xc7, 0xc9, 0x35,
|
||||
0x31, 0x81, 0x0e, 0xb4, 0xd2, 0x44, 0x96, 0xd1, 0x0b, 0x5b, 0x69, 0x82, 0x07, 0xd0, 0x11, 0xf3,
|
||||
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||||
0x0b, 0xc7, 0x07, 0x00, 0x00,
|
||||
func init() {
|
||||
proto.RegisterFile("micro/go-micro/router/service/proto/router.proto", fileDescriptor_c2b04f200fb3e806)
|
||||
}
|
||||
|
||||
var fileDescriptor_c2b04f200fb3e806 = []byte{
|
||||
// 646 bytes of a gzipped FileDescriptorProto
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||||
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|
||||
}
|
||||
|
||||
@ -1,5 +1,5 @@
|
||||
// Code generated by protoc-gen-micro. DO NOT EDIT.
|
||||
// source: router.proto
|
||||
// source: micro/go-micro/router/service/proto/router.proto
|
||||
|
||||
package go_micro_router
|
||||
|
||||
@ -38,7 +38,6 @@ type RouterService interface {
|
||||
Watch(ctx context.Context, in *WatchRequest, opts ...client.CallOption) (Router_WatchService, error)
|
||||
Advertise(ctx context.Context, in *Request, opts ...client.CallOption) (Router_AdvertiseService, error)
|
||||
Process(ctx context.Context, in *Advert, opts ...client.CallOption) (*ProcessResponse, error)
|
||||
Status(ctx context.Context, in *Request, opts ...client.CallOption) (*StatusResponse, error)
|
||||
}
|
||||
|
||||
type routerService struct {
|
||||
@ -167,16 +166,6 @@ func (c *routerService) Process(ctx context.Context, in *Advert, opts ...client.
|
||||
return out, nil
|
||||
}
|
||||
|
||||
func (c *routerService) Status(ctx context.Context, in *Request, opts ...client.CallOption) (*StatusResponse, error) {
|
||||
req := c.c.NewRequest(c.name, "Router.Status", in)
|
||||
out := new(StatusResponse)
|
||||
err := c.c.Call(ctx, req, out, opts...)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return out, nil
|
||||
}
|
||||
|
||||
// Server API for Router service
|
||||
|
||||
type RouterHandler interface {
|
||||
@ -184,7 +173,6 @@ type RouterHandler interface {
|
||||
Watch(context.Context, *WatchRequest, Router_WatchStream) error
|
||||
Advertise(context.Context, *Request, Router_AdvertiseStream) error
|
||||
Process(context.Context, *Advert, *ProcessResponse) error
|
||||
Status(context.Context, *Request, *StatusResponse) error
|
||||
}
|
||||
|
||||
func RegisterRouterHandler(s server.Server, hdlr RouterHandler, opts ...server.HandlerOption) error {
|
||||
@ -193,7 +181,6 @@ func RegisterRouterHandler(s server.Server, hdlr RouterHandler, opts ...server.H
|
||||
Watch(ctx context.Context, stream server.Stream) error
|
||||
Advertise(ctx context.Context, stream server.Stream) error
|
||||
Process(ctx context.Context, in *Advert, out *ProcessResponse) error
|
||||
Status(ctx context.Context, in *Request, out *StatusResponse) error
|
||||
}
|
||||
type Router struct {
|
||||
router
|
||||
@ -284,10 +271,6 @@ func (h *routerHandler) Process(ctx context.Context, in *Advert, out *ProcessRes
|
||||
return h.RouterHandler.Process(ctx, in, out)
|
||||
}
|
||||
|
||||
func (h *routerHandler) Status(ctx context.Context, in *Request, out *StatusResponse) error {
|
||||
return h.RouterHandler.Status(ctx, in, out)
|
||||
}
|
||||
|
||||
// Client API for Table service
|
||||
|
||||
type TableService interface {
|
||||
|
||||
@ -8,7 +8,6 @@ service Router {
|
||||
rpc Watch(WatchRequest) returns (stream Event) {};
|
||||
rpc Advertise(Request) returns (stream Advert) {};
|
||||
rpc Process(Advert) returns (ProcessResponse) {};
|
||||
rpc Status(Request) returns (StatusResponse) {};
|
||||
}
|
||||
|
||||
service Table {
|
||||
@ -129,12 +128,3 @@ message Route {
|
||||
// the metric / score of this route
|
||||
int64 metric = 7;
|
||||
}
|
||||
|
||||
message Status {
|
||||
string code = 1;
|
||||
string error = 2;
|
||||
}
|
||||
|
||||
message StatusResponse {
|
||||
Status status = 1;
|
||||
}
|
||||
|
||||
@ -2,7 +2,6 @@ package service
|
||||
|
||||
import (
|
||||
"context"
|
||||
"errors"
|
||||
"fmt"
|
||||
"io"
|
||||
"sync"
|
||||
@ -19,7 +18,6 @@ type svc struct {
|
||||
callOpts []client.CallOption
|
||||
router pb.RouterService
|
||||
table *table
|
||||
status *router.Status
|
||||
exit chan bool
|
||||
errChan chan error
|
||||
advertChan chan *router.Advert
|
||||
@ -43,16 +41,9 @@ func NewRouter(opts ...router.Option) router.Router {
|
||||
cli = options.Client
|
||||
}
|
||||
|
||||
// set the status to Stopped
|
||||
status := &router.Status{
|
||||
Code: router.Stopped,
|
||||
Error: nil,
|
||||
}
|
||||
|
||||
// NOTE: should we have Client/Service option in router.Options?
|
||||
s := &svc{
|
||||
opts: options,
|
||||
status: status,
|
||||
router: pb.NewRouterService(router.DefaultName, cli),
|
||||
}
|
||||
|
||||
@ -98,12 +89,6 @@ func (s *svc) Table() router.Table {
|
||||
func (s *svc) Start() error {
|
||||
s.Lock()
|
||||
defer s.Unlock()
|
||||
|
||||
s.status = &router.Status{
|
||||
Code: router.Running,
|
||||
Error: nil,
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
@ -169,21 +154,16 @@ func (s *svc) Advertise() (<-chan *router.Advert, error) {
|
||||
s.Lock()
|
||||
defer s.Unlock()
|
||||
|
||||
switch s.status.Code {
|
||||
case router.Running, router.Advertising:
|
||||
stream, err := s.router.Advertise(context.Background(), &pb.Request{}, s.callOpts...)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("failed getting advert stream: %s", err)
|
||||
}
|
||||
// create advertise and event channels
|
||||
advertChan := make(chan *router.Advert)
|
||||
go s.advertiseEvents(advertChan, stream)
|
||||
return advertChan, nil
|
||||
case router.Stopped:
|
||||
return nil, fmt.Errorf("not running")
|
||||
stream, err := s.router.Advertise(context.Background(), &pb.Request{}, s.callOpts...)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("failed getting advert stream: %s", err)
|
||||
}
|
||||
|
||||
return nil, fmt.Errorf("error: %s", s.status.Error)
|
||||
// create advertise and event channels
|
||||
advertChan := make(chan *router.Advert)
|
||||
go s.advertiseEvents(advertChan, stream)
|
||||
|
||||
return advertChan, nil
|
||||
}
|
||||
|
||||
// Process processes incoming adverts
|
||||
@ -220,55 +200,6 @@ func (s *svc) Process(advert *router.Advert) error {
|
||||
return nil
|
||||
}
|
||||
|
||||
// Status returns router status
|
||||
func (s *svc) Status() router.Status {
|
||||
s.Lock()
|
||||
defer s.Unlock()
|
||||
|
||||
// check if its stopped
|
||||
select {
|
||||
case <-s.exit:
|
||||
return router.Status{
|
||||
Code: router.Stopped,
|
||||
Error: nil,
|
||||
}
|
||||
default:
|
||||
// don't block
|
||||
}
|
||||
|
||||
// check the remote router
|
||||
rsp, err := s.router.Status(context.Background(), &pb.Request{}, s.callOpts...)
|
||||
if err != nil {
|
||||
return router.Status{
|
||||
Code: router.Error,
|
||||
Error: err,
|
||||
}
|
||||
}
|
||||
|
||||
code := router.Running
|
||||
var serr error
|
||||
|
||||
switch rsp.Status.Code {
|
||||
case "running":
|
||||
code = router.Running
|
||||
case "advertising":
|
||||
code = router.Advertising
|
||||
case "stopped":
|
||||
code = router.Stopped
|
||||
case "error":
|
||||
code = router.Error
|
||||
}
|
||||
|
||||
if len(rsp.Status.Error) > 0 {
|
||||
serr = errors.New(rsp.Status.Error)
|
||||
}
|
||||
|
||||
return router.Status{
|
||||
Code: code,
|
||||
Error: serr,
|
||||
}
|
||||
}
|
||||
|
||||
// Remote router cannot be stopped
|
||||
func (s *svc) Stop() error {
|
||||
s.Lock()
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user