fix: add more traces

pkg/es/driver/mem-store/mem-store.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 
+	"github.com/sour-is/ev/internal/logz"
 	"github.com/sour-is/ev/pkg/es"
 	"github.com/sour-is/ev/pkg/es/driver"
 	"github.com/sour-is/ev/pkg/es/event"
@@ -26,19 +27,31 @@ const AppendOnly = es.AppendOnly
 const AllEvents = es.AllEvents
 
 func Init(ctx context.Context) {
+	ctx, span := logz.Span(ctx)
+	defer span.End()
+
 	es.Register(ctx, "mem", &memstore{})
 }
 
 var _ driver.Driver = (*memstore)(nil)
 
-func (memstore) Open(_ context.Context, name string) (driver.Driver, error) {
+func (memstore) Open(ctx context.Context, name string) (driver.Driver, error) {
+	_, span := logz.Span(ctx)
+	defer span.End()
+
 	s := &state{streams: make(map[string]*locker.Locked[event.Events])}
 	return &memstore{locker.New(s)}, nil
 }
 func (m *memstore) EventLog(ctx context.Context, streamID string) (driver.EventLog, error) {
+	ctx, span := logz.Span(ctx)
+	defer span.End()
+
 	el := &eventLog{streamID: streamID}
 
 	err := m.state.Modify(ctx, func(state *state) error {
+		_, span := logz.Span(ctx)
+		defer span.End()
+
 		l, ok := state.streams[streamID]
 		if !ok {
 			l = locker.New(&event.Events{})
@@ -57,15 +70,23 @@ var _ driver.EventLog = (*eventLog)(nil)
 
 // Append implements driver.EventStore
 func (m *eventLog) Append(ctx context.Context, events event.Events, version uint64) (uint64, error) {
+	ctx, span := logz.Span(ctx)
+	defer span.End()
+
 	event.SetStreamID(m.streamID, events...)
 
 	return uint64(len(events)), m.events.Modify(ctx, func(stream *event.Events) error {
+		_, span := logz.Span(ctx)
+		defer span.End()
+
 		last := uint64(len(*stream))
 		if version != AppendOnly && version != last {
 			return fmt.Errorf("current version wrong %d != %d", version, last)
 		}
 
 		for i := range events {
+			span.AddEvent(fmt.Sprintf("read event %d of %d", i, len(events)))
+
 			pos := last + uint64(i) + 1
 			event.SetPosition(events[i], pos)
 			*stream = append(*stream, events[i])
@@ -77,9 +98,15 @@ func (m *eventLog) Append(ctx context.Context, events event.Events, version uint
 
 // Read implements driver.EventStore
 func (es *eventLog) Read(ctx context.Context, pos int64, count int64) (event.Events, error) {
+	ctx, span := logz.Span(ctx)
+	defer span.End()
+
 	var events event.Events
 
 	err := es.events.Modify(ctx, func(stream *event.Events) error {
+		_, span := logz.Span(ctx)
+		defer span.End()
+
 		first := stream.First().EventMeta().Position
 		last := stream.Last().EventMeta().Position
 		// ---
@@ -94,6 +121,7 @@ func (es *eventLog) Read(ctx context.Context, pos int64, count int64) (event.Eve
 
 		events = make([]event.Event, math.Abs(count))
 		for i := range events {
+			span.AddEvent(fmt.Sprintf("read event %d of %d", i, math.Abs(count)))
 			// ---
 			events[i] = (*stream)[start-1]
 			// ---
@@ -122,12 +150,18 @@ func (es *eventLog) Read(ctx context.Context, pos int64, count int64) (event.Eve
 
 // FirstIndex for the streamID
 func (m *eventLog) FirstIndex(ctx context.Context) (uint64, error) {
+	_, span := logz.Span(ctx)
+	defer span.End()
+
 	events, err := m.events.Copy(ctx)
 	return events.First().EventMeta().Position, err
 }
 
 // LastIndex for the streamID
 func (m *eventLog) LastIndex(ctx context.Context) (uint64, error) {
+	_, span := logz.Span(ctx)
+	defer span.End()
+
 	events, err := m.events.Copy(ctx)
 	return events.Last().EventMeta().Position, err
 }