first commit

src/common/logger/tint/buffer.go

@@ -0,0 +1,56 @@
+package tint
+
+import "sync"
+
+type buffer []byte
+
+//nolint:gochecknoglobals // We are ok with this global definition
+var bufPool = sync.Pool{
+	New: func() any {
+		b := make(buffer, 0, 1024)
+
+		return &b
+	},
+}
+
+func newBuffer() *buffer {
+	return bufPool.Get().(*buffer) //nolint:forcetypeassert // bufPool will always return a buffer
+}
+
+func (b *buffer) Free() {
+	// To reduce peak allocation, return only smaller buffers to the pool.
+	const maxBufferSize = 16 << 10
+	if cap(*b) <= maxBufferSize {
+		*b = (*b)[:0]
+		bufPool.Put(b)
+	}
+}
+
+func (b *buffer) Write(bytes []byte) (int, error) {
+	*b = append(*b, bytes...)
+
+	return len(bytes), nil
+}
+
+func (b *buffer) WriteByte(char byte) error {
+	*b = append(*b, char)
+
+	return nil
+}
+
+func (b *buffer) WriteString(str string) (int, error) {
+	*b = append(*b, str...)
+
+	return len(str), nil
+}
+
+// revive:disable:flag-parameter in this case we consider is ok to use a flag as a parameter
+func (b *buffer) WriteStringIf(ok bool, str string) (int, error) {
+	if !ok {
+		return 0, nil
+	}
+
+	return b.WriteString(str)
+}
+
+// revive:enable