Mirror/FairMQ
1
0
Fork 0
mirror of https://github.com/FairRootGroup/FairMQ.git synced 2025-10-13 16:46:47 +00:00
Code Issues Packages Projects Releases Wiki Activity
edcc7a4ee3
FairMQ/examples/MQ/8-multipart
History
Alexey Rybalchenko edcc7a4ee3 Cleanup example include directories
2018-05-02 16:12:57 +02:00
..
CMakeLists.txt Cleanup example include directories 2018-05-02 16:12:57 +02:00
ex8-multipart.json Rename /example to /examples and move MQ examples in it 2018-05-02 16:12:57 +02:00
FairMQExample8Sampler.cxx add deleter in FairMQ example 8 2018-05-02 16:12:57 +02:00
FairMQExample8Sampler.h change serialization API so that it takes a FairMQMessage reference 2018-05-02 16:12:57 +02:00
FairMQExample8Sink.cxx Update multi-part features (nanomsg) and various fixes 2018-05-02 16:12:57 +02:00
FairMQExample8Sink.h change serialization API so that it takes a FairMQMessage reference 2018-05-02 16:12:57 +02:00
README.md Rename /example to /examples and move MQ examples in it 2018-05-02 16:12:57 +02:00
runExample8Sampler.cxx Configuration and DDS example/tools updates 2018-05-02 16:12:57 +02:00
runExample8Sink.cxx Configuration and DDS example/tools updates 2018-05-02 16:12:57 +02:00
startMQEx8.sh.in Configuration and DDS example/tools updates 2018-05-02 16:12:57 +02:00

README.md

Example 8: Sending Multipart messages

A topology of two devices - Sampler and Sink, communicating with PUSH-PULL pattern.

The Sampler sends a multipart message to the Sink, consisting of two message parts - header and body.

Each message part is a regular FairMQMessage. To combine them into a multi-part message, simply send all but the last part with SendPart() and the last part with Send() as shown in the example.

The ZeroMQ transport guarantees delivery of both parts together. Meaning that when the Receive call of the Sink receives the first part, following parts have arrived too.

The header contains a simple data structure with one integer. The integer in this structure is used as a stop flag for the sink. As long as its value is 0, the Sink will keep processing the data. Once its value is 1, the Sink will exit its Run() method.