package model type SegmentMetadataValueType interface { IsSegmentMetadataValueType() } type SegmentMetadataValueStringType struct { Value string } func (s *SegmentMetadataValueStringType) IsSegmentMetadataValueType() {} type SegmentMetadataValueInt64Type struct { Value int64 } func (s *SegmentMetadataValueInt64Type) IsSegmentMetadataValueType() {} type SegmentMetadataValueFloat64Type struct { Value float64 } func (s *SegmentMetadataValueFloat64Type) IsSegmentMetadataValueType() {} type SegmentMetadata[T SegmentMetadataValueType] struct { Metadata map[string]T } func NewSegmentMetadata[T SegmentMetadataValueType]() *SegmentMetadata[T] { return &SegmentMetadata[T]{ Metadata: make(map[string]T), } } func (m *SegmentMetadata[T]) Set(key string, value T) { m.Metadata[key] = value } func (m *SegmentMetadata[T]) Get(key string) T { return m.Metadata[key] } func (m *SegmentMetadata[T]) Remove(key string) { delete(m.Metadata, key) } func (m *SegmentMetadata[T]) Keys() []string { keys := make([]string, 0, len(m.Metadata)) for k := range m.Metadata { keys = append(keys, k) } return keys } func (m *SegmentMetadata[T]) Empty() bool { return len(m.Metadata) == 0 }