namespace com.example

struct Tick
{
    0: required uint64 epoch;
}

enum Timezone
{
    UTC,
    LOCAL = 1
}

struct Timestamp : Tick
{
    0: string time;
    1: Timezone timezone = LOCAL;
    2: string tz_name;
}

struct TimeQuery
{
    0: Timezone timezone = LOCAL;
    1: string format = "MMM dd, yyyy H:mm:ss tt";
}

service Clock
{
    Timestamp get_now (TimeQuery);
    stream Tick on_tick ();
    stream Timestamp on_timestamp ();
}