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//
// $Id$
//
#include "CosTimeBase.idl"
module RtecEventComm {
// = TITLE
// User defined Event Data.
//
// = DESCRIPTION
// The Event payload is defined by this type.
// Users wanting maximum flexibility can use an Any,
// users that only have one type of event may use structures,
// other users may preffer union, trying to strike a balance
// between performance and flexibility.
// Users willing to implement their own marshalling may use a
// sequence of octet.
#if 0
union EventData switch(long) {
case 1: double dval;
case 2: string sval;
case 3: sequence<octet> bval;
default: long lval;
};
#else
typedef sequence<octet> EventPayload;
struct EventData {
long x;
long y;
double pad0;
long pad1;
// This two objects ensure that the encapsulated stream below is
// properly aligned; this makes the decoding of the payload more
// efficient because we can use the usual demarshalling code
// (without making extra copies).
EventPayload payload;
};
#endif
typedef TimeBase::TimeT Time;
typedef long EventSourceID;
typedef long EventType;
struct Event
{
// = TITLE
// The Event structure.
//
// = DESCRIPTION
// Events are represented by this structure, it is simply a
// header,data pair.
//
EventType type_;
// The event type.
// This may be different from the discriminator in the EventData
// union above, the motivation is to allow filtering by data
// contents: different event types are assigned to different data
// contents though they use the same discriminator.
EventSourceID source_;
// Some way to identify the supplier.
long ttl_;
// The "Time To Live" count, each time an EC process the event it
// decreases the TTL field, when it gets to zero the message is no
// longer forwarded.
Time creation_time_;
Time ec_recv_time_;
Time ec_send_time_;
// Some timestamps, they actually belong in the payload, for some
// kind of measument event.
EventData data_;
// The event payload.
};
typedef sequence<Event> EventSet;
interface PushConsumer {
oneway void push (in EventSet data);
void disconnect_push_consumer();
};
interface PushSupplier {
void disconnect_push_supplier();
};
};
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