Various settings to configure the external RTI Persistence Service used by RTI Connext for DataWriters with a com.rti.dds.infrastructure.DurabilityQosPolicy setting of com.rti.dds.infrastructure.DurabilityQosPolicyKind.DurabilityQosPolicyKind.PERSISTENT_DURABILITY_QOS or com.rti.dds.infrastructure.DurabilityQosPolicyKind.DurabilityQosPolicyKind.TRANSIENT_DURABILITY_QOS. More...

Inheritance diagram for DurabilityServiceQosPolicy:

Public Attributes
final Duration_t	service_cleanup_delay
	Controls when the service is able to remove all information regarding a data instances. More...

HistoryQosPolicyKind	history_kind
	The kind of history to apply in recouping durable data. More...

int	history_depth
	Setting to use for the com.rti.dds.infrastructure.DurabilityQosPolicy.writer_depth when recouping durable data. More...

int	max_samples
	Part of resource limits QoS policy to apply when feeding a late joiner. More...

int	max_instances
	Part of resource limits QoS policy to apply when feeding a late joiner. More...

int	max_samples_per_instance
	Part of resource limits QoS policy to apply when feeding a late joiner. More...

Public Attributes inherited from QosPolicy
final QosPolicyId_t	id
	The ID of this QoS policy. More...

final String	policy_name
	The name of this QoS policy. More...

Detailed Description

Various settings to configure the external RTI Persistence Service used by RTI Connext for DataWriters with a com.rti.dds.infrastructure.DurabilityQosPolicy setting of com.rti.dds.infrastructure.DurabilityQosPolicyKind.DurabilityQosPolicyKind.PERSISTENT_DURABILITY_QOS or com.rti.dds.infrastructure.DurabilityQosPolicyKind.DurabilityQosPolicyKind.TRANSIENT_DURABILITY_QOS.

Entity:: com.rti.dds.topic.Topic, com.rti.dds.publication.DataWriter

Properties:: RxO = NO
Changeable = UNTIL ENABLE

See also: DURABILITY; HISTORY; RESOURCE_LIMITS

Usage

When a DataWriter's com.rti.dds.infrastructure.DurabilityQosPolicy.kind is com.rti.dds.infrastructure.DurabilityQosPolicyKind.DurabilityQosPolicyKind.PERSISTENT_DURABILITY_QOS or com.rti.dds.infrastructure.DurabilityQosPolicyKind.DurabilityQosPolicyKind.TRANSIENT_DURABILITY_QOS, an external service, the RTI Persistence Service, is used to store and possibly forward the data sent by the com.rti.dds.publication.DataWriter to com.rti.dds.subscription.DataReader objects that are created after the data was initially sent.

This QoS policy is used to configure certain parameters of the Persistence Service when it operates on the behalf of the com.rti.dds.publication.DataWriter, such as how much data to store. For example, it configures the DURABILITY, HISTORY, and the RESOURCE_LIMITS used by the fictitious DataReader and DataWriter used by the Persistence Service. Note, however, that the Persistence Service itself may be configured to ignore these values and instead use values from its own configuration file.

Member Data Documentation

◆ service_cleanup_delay

final Duration_t service_cleanup_delay

Initial value:

= new Duration_t(

Duration_t.DURATION_INFINITE_SEC, Duration_t.DURATION_INFINITE_NSEC)

Controls when the service is able to remove all information regarding a data instances.

When the service cleanup delay is set to 0, disposed instances will be completely removed from the service. Only values of 0 and com.rti.dds.infrastructure.Duration_t.DURATION_INFINITE are currently supported.

[default] 0