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fix: file sharing of wal

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This commit is contained in:
xuu
2022-08-11 03:18:04 +00:00
parent 50b44a7bb7
commit 23639bc306
3 changed files with 26 additions and 9 deletions
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2
pkg/es/driver/disk-store/disk-store.go
View File

@@ -3,6 +3,7 @@ package diskstore
import (
"context"
"fmt"
"log"
"os"
"path/filepath"
"strings"
@@ -115,6 +116,7 @@ func (es *eventLog) Read(ctx context.Context, pos, count int64) (event.Events, e
}
start, count := math.PagerBox(first, last, pos, count)
log.Println("reading", first, last, pos, count, start)
if count == 0 {
return nil
}

19
pkg/es/driver/streamer/streamer.go
View File

@@ -2,6 +2,7 @@ package streamer
import (
"context"
"log"
"github.com/sour-is/ev/pkg/es"
"github.com/sour-is/ev/pkg/es/driver"
@@ -55,16 +56,20 @@ 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] {
return sub.position.Modify(ctx, func(position *position) error {
log.Println("trigg ", sub)
err := sub.position.Modify(ctx, func(position *position) error {
position.size = int64(events.Last().EventMeta().Position - uint64(position.idx))
if position.wait != nil {
@@ -73,6 +78,7 @@ func (s *streamer) Send(ctx context.Context, streamID string, events event.Event
}
return nil
})
if err != nil { return err }
}
return nil
})
@@ -83,6 +89,7 @@ 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 {
@@ -143,6 +150,8 @@ 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
@@ -178,7 +187,13 @@ 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
events, err = s.events.Read(ctx, int64(position.idx), position.size)
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)