very inefficient, but can receive udp monitor events and count them and send them as kafka events

src/asynStreamGeneratorDriver.h

@@ -2,6 +2,13 @@
 #define asynStreamGeneratorDriver_H
 
 #include "asynPortDriver.h"
+#include <epicsRingPointer.h>
+#include <librdkafka/rdkafka.h>
+
+struct __attribute__((__packed__)) NormalisedMonitorEvent {
+    uint64_t TimeStamp;
+    uint32_t DataID : 4;
+};
 
 /* These are the drvInfo strings that are used to identify the parameters. */
 #define P_CountsString "COUNTS%d" /* asynInt32,    r/w */
@@ -16,6 +23,7 @@ class asynStreamGeneratorDriver : public asynPortDriver {
     virtual asynStatus readInt32(asynUser *pasynUser, epicsInt32 *value);
 
     void receiveUDP();
+    void produceMonitor();
 
   protected:
     int *P_Counts;
@@ -23,6 +31,9 @@ class asynStreamGeneratorDriver : public asynPortDriver {
   private:
     asynUser *pasynUDPUser;
     int num_channels;
+
+    epicsRingPointer<NormalisedMonitorEvent> monitorQueue;
+    rd_kafka_t *monitorProducer;
 };
 
 #endif