func (e *Event) encode() []byte {
buf := bytes.NewBuffer([]byte{})
binary.WriteUvarint(buf, len(e.Data))
buf.Write(e.Data)
binary.WriteUvarint(buf, len(e.offsets))
for name, offset := range e.offsets {
binary.WriteUvarint(buf, len(name))
buf.Write([]byte(name))
binary.WriteUvarint64(buf, offset)
}
return buf.Bytes()
}
func (db *DB) Save() ([]byte, error) {
buf := &bytes.Buffer{}
binary.WriteInt64(buf, int64(db.current))
binary.WriteInt64(buf, db.MostRecent)
binary.WriteUvarint(buf, len(db.closed))
for _, commit := range db.closed {
binary.WriteInt64(buf, int64(commit))
}
return buf.Bytes(), nil
}
// Events are encoded in the following byte format:
// [Uvarint:length][int32:timestamp][bytes(length):data]
func (e *Event) push(out io.Writer) {
binary.WriteUvarint(out, len(e.Data))
binary.WriteInt32(out, e.Timestamp)
out.Write(e.Data)
e.Data = nil
}