manifest

type FSStore struct {
	Root fs.FS
}

type FileEntry struct {
	Tier       string `json:"tier"`
	Path       string `json:"path"`
	RowIDMin   string `json:"row_id_min"`
	RowIDMax   string `json:"row_id_max"`
	CreatedMin int64  `json:"created_min"`
	CreatedMax int64  `json:"created_max"`
	SizeBytes  int64  `json:"size_bytes"`
	RowCount   int64  `json:"row_count"`
	Checksum   string `json:"checksum,omitempty"`
}

type Manifest struct {
	SchemaID    int16       `json:"schema_id"`
	Version     int64       `json:"version"`
	UpdatedAtMs int64       `json:"updated_at_ms"`
	Files       []FileEntry `json:"files"`
}

type PathResolver struct {
	Prefix       string
	PathTemplate string
}

type S3Client interface {
	GetObject(ctx context.Context, params *s3.GetObjectInput, optFns ...func(*s3.Options)) (*s3.GetObjectOutput, error)
	PutObject(ctx context.Context, params *s3.PutObjectInput, optFns ...func(*s3.Options)) (*s3.PutObjectOutput, error)
}

type S3Store struct {
	Client S3Client
	Bucket string
}

type Store interface {
	Load(ctx context.Context, path string) (data []byte, etag string, err error)
	Save(ctx context.Context, path string, data []byte, etag string) (newETag string, err error)
}