iox::dds::DataReader

Abstraction for DDS Data Readers. #include <iceoryx_dds/dds/data_reader.hpp>

Inherited by iox::dds::CycloneDataReader

Public Functions

	Name
virtual void	connect() =0 Connect the DataReader to the underlying DDS network.
virtual iox::cxx::optional< IoxChunkDatagramHeader >	peekNextIoxChunkDatagramHeader() =0 peekNextIoxChunkDatagramHeader Get the IoxChunkDatagramHeader of the next sample if one is available.
virtual bool	hasSamples() =0 Checks if new samples are ready to take.
virtual iox::cxx::expected< DataReaderError >	takeNext(const IoxChunkDatagramHeader datagramHeader, uint8_t const userHeaderBuffer, uint8_t const userPayloadBuffer) =0 take Take the next available sample from the DDS data space.
virtual capro::IdString_t	getServiceId() const =0 get ID of the service
virtual capro::IdString_t	getInstanceId() const =0 get ID of the instance
virtual capro::IdString_t	getEventId() const =0 get ID of the event

Protected Functions

	Name
	DataReader() =default

Public Functions Documentation

function connect

virtual void connect() =0

Connect the DataReader to the underlying DDS network.

Reimplemented by: iox::dds::CycloneDataReader::connect

function peekNextIoxChunkDatagramHeader

virtual iox::cxx::optional< IoxChunkDatagramHeader > peekNextIoxChunkDatagramHeader() =0

peekNextIoxChunkDatagramHeader Get the IoxChunkDatagramHeader of the next sample if one is available.

Return: The IoxChunkDatagramHeader of the next sample if one is available.

Reimplemented by: iox::dds::CycloneDataReader::peekNextIoxChunkDatagramHeader

function hasSamples

virtual bool hasSamples() =0

Checks if new samples are ready to take.

Return: True if new samples are available.

Reimplemented by: iox::dds::CycloneDataReader::hasSamples

function takeNext

virtual iox::cxx::expected< DataReaderError > takeNext(
    const IoxChunkDatagramHeader datagramHeader,
    uint8_t *const userHeaderBuffer,
    uint8_t *const userPayloadBuffer
) =0

take Take the next available sample from the DDS data space.

Parameters:

• datagramHeader with size information
• userHeaderBuffer buffer for the user-header
• userPayloadBuffer buffer for the user-payload

Return: Error if unsuccessful.

Reimplemented by: iox::dds::CycloneDataReader::takeNext

function getServiceId

virtual capro::IdString_t getServiceId() const =0

get ID of the service

Reimplemented by: iox::dds::CycloneDataReader::getServiceId

function getInstanceId

virtual capro::IdString_t getInstanceId() const =0

get ID of the instance

Reimplemented by: iox::dds::CycloneDataReader::getInstanceId

function getEventId

virtual capro::IdString_t getEventId() const =0

get ID of the event

Reimplemented by: iox::dds::CycloneDataReader::getEventId

Protected Functions Documentation

function DataReader

DataReader() =default

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Updated on 17 March 2022 at 12:15:57 CET