chore: save sst code

lg/metric.go

@@ -38,9 +38,11 @@ func initMetrics(ctx context.Context, name string) (context.Context, func() erro
 	goversion := ""
 	pkg := ""
 	host := ""
+	version := "0.0.1"
 	if info, ok := debug.ReadBuildInfo(); ok {
 		goversion = info.GoVersion
 		pkg = info.Path
+		version = info.Main.Version
 	}
 	if h, err := os.Hostname(); err == nil {
 		host = h
@@ -69,7 +71,7 @@ func initMetrics(ctx context.Context, name string) (context.Context, func() erro
 	)
 
 	meter := provider.Meter(name,
-		api.WithInstrumentationVersion("0.0.1"),
+		api.WithInstrumentationVersion(version),
 		api.WithInstrumentationAttributes(
 			attribute.String("app", name),
 			attribute.String("host", host),

lg/tracer.go

@@ -64,11 +64,10 @@ func (w wrapSpan) AddEvent(name string, options ...trace.EventOption) {
 	cfg := trace.NewEventConfig(options...)
 
 	attrs := cfg.Attributes()
-	args := make([]any, len(attrs)*2)
+	args := make([]any, len(attrs))
 
 	for i, a := range attrs {
-		args[2*i] = a.Key
+		args[i] = slog.Attr{Key: string(a.Key), Value: slog.StringValue(a.Value.AsString())}
-		args[2*i+1] = a.Value
 	} 
 
 	slog.Debug(name, args...)

lsm/sst.go

@@ -316,15 +316,24 @@ func (l *logFile) LoadSegment(pos int64) (*segmentBytes, error) {
 	return &segmentBytes{b, -1}, nil
 }
 func (l *logFile) Find(needle []byte, first bool) (*entryBytes, bool, error) {
-	var last segmentReader
+	var cur, last segmentReader
 
 	for _, s := range l.segments {
-		e, err := s.FirstEntry()
+		cur = s
+		e, err := cur.FirstEntry()
 		if err != nil {
 			return nil, false, err
 		}
 		k, _ := e.KeyValue()
-		if first && bytes.Compare(k, needle) >= 0 {
+
+		if first && bytes.Equal(k, needle) {
+			break
+		}
+		if first && bytes.Compare(k, needle) > 0 {
+			e, ok, err := cur.Find(needle, first)
+			if ok || err != nil{
+				return e, ok, err
+			}
 			break
 		}
 		if !first && bytes.Compare(k, needle) > 0 {
@@ -333,7 +342,12 @@ func (l *logFile) Find(needle []byte, first bool) (*entryBytes, bool, error) {
 		last = s
 	}
 
-	return last.Find(needle, first)
+	e, ok, err := last.Find(needle, first)
+	if ok || err != nil{
+		return e, ok, err
+	}
+	// if by mistake it was not found in the last.. check the next segment.
+	return cur.Find(needle, first)
 }
 func (l *logFile) WriteTo(w io.Writer) (int64, error) {
 	return l.rd.WriteTo(w)

lsm/sst_test.go

@@ -40,7 +40,7 @@ func TestLargeFile(t *testing.T) {
 	}
 	t.Log(f.Stat())
 
-	tt, ok, err := sf.Find(needle, false)
+	tt, ok, err := sf.Find(needle, true)
 	is.NoErr(err)
 	is.True(ok)
 	key, val := tt.KeyValue()
@@ -183,6 +183,17 @@ func TestFindRange(t *testing.T) {
 	is.Equal(key, []byte("AB"))
 	is.Equal(val, uint64(2))
 
+	last, ok, err = sf.Find([]byte("AB"), false)
+	is.NoErr(err)
+
+	key, val = last.KeyValue()
+	t.Log(string(key), val)
+
+	is.True(ok)
+	is.Equal(key, []byte("AB"))
+	is.Equal(val, uint64(4))
+
+
 	last, ok, err = sf.Find([]byte("AC"), false)
 	is.NoErr(err)