feat: add logs/metrics/tracing

pkg/es/driver/streamer/streamer.go

@@ -2,7 +2,6 @@ package streamer
 
 import (
 	"context"
-	"log"
 
 	"github.com/sour-is/ev/pkg/es"
 	"github.com/sour-is/ev/pkg/es/driver"
@@ -56,19 +55,15 @@ func (s *streamer) Subscribe(ctx context.Context, streamID string, start int64)
 		size: es.AllEvents,
 	})
 	sub.unsub = s.delete(streamID, sub)
-	log.Println("start ", sub)
 
 	return sub, s.state.Modify(ctx, func(state *state) error {
 		state.subscribers[streamID] = append(state.subscribers[streamID], sub)
-		log.Println("add ", len(state.subscribers[streamID]))
 		return nil
 	})
 }
 func (s *streamer) Send(ctx context.Context, streamID string, events event.Events) error {
 	return s.state.Modify(ctx, func(state *state) error {
-		log.Println("trigger ", len(state.subscribers[streamID]))
 		for _, sub := range state.subscribers[streamID] {
-			log.Println("trigg ", sub)
 			err := sub.position.Modify(ctx, func(position *position) error {
 				position.size = int64(events.Last().EventMeta().Position - uint64(position.idx))
 
@@ -78,7 +73,9 @@ func (s *streamer) Send(ctx context.Context, streamID string, events event.Event
 				}
 				return nil
 			})
-			if err != nil { return err }
+			if err != nil {
+				return err
+			}
 		}
 		return nil
 	})
@@ -89,7 +86,6 @@ func (s *streamer) delete(streamID string, sub *subscription) func(context.Conte
 		if err := ctx.Err(); err != nil {
 			return err
 		}
-		log.Println("unsub ", s)
 		return s.state.Modify(ctx, func(state *state) error {
 			lis := state.subscribers[streamID]
 			for i := range lis {
@@ -150,8 +146,6 @@ type subscription struct {
 
 func (s *subscription) Recv(ctx context.Context) bool {
 	var wait func(context.Context) bool
-	log.Println("wait ", s)
-	defer log.Println("recv ", s)
 	err := s.position.Modify(ctx, func(position *position) error {
 		if position.size == es.AllEvents {
 			return nil
@@ -187,13 +181,10 @@ func (s *subscription) Events(ctx context.Context) (event.Events, error) {
 	var events event.Events
 	return events, s.position.Modify(ctx, func(position *position) error {
 		var err error
-		log.Println("pos=", position, s)
 		events, err = s.events.Read(ctx, position.idx, position.size)
 		if err != nil {
-			log.Println(err, s)
 			return err
 		}
-		log.Println("events=", len(events), s)
 		position.size = int64(len(events))
 		if len(events) > 0 {
 			position.idx = int64(events.First().EventMeta().Position - 1)