QoSProfileSubscriber QML Type

Subscribes to rosgraph_msgs::msg::QoSProfile messages — Message-based representation of ROS 2 Quality of Service settings Default values are kept in sync with RMW by integration test Note that SYSTEM_DEFAULT and BEST_AVAILABLE values cannot be an observed value, because they resolve concretely at runtime. More...

• List of all members, including inherited members

Properties

• deadline : duration
• depth : uint32_t
• durability : uint8_t
• history : uint8_t
• lifespan : duration
• liveliness : uint8_t
• livelinessLeaseDuration : duration
• message : qoSProfile
• reliability : uint8_t

Signals

• messageReceived(qoSProfile msg)

Detailed Description

They are included here for completeness to match the data structures in RMW

QoSProfileSubscriber receives qoSProfile values from a ROS 2 topic. Set the topic and node properties, then connect to the messageReceived() signal.

See also QoSProfilePublisher and qoSProfile.

Property Documentation

deadline : duration

The deadline field of the last received message. Updated whenever a new message arrives. deadlineChanged is emitted on every update.

depth : uint32_t

The depth field of the last received message. Updated whenever a new message arrives. depthChanged is emitted on every update.

durability : uint8_t

The durability field of the last received message. Updated whenever a new message arrives. durabilityChanged is emitted on every update.

history : uint8_t

The history field of the last received message. Updated whenever a new message arrives. historyChanged is emitted on every update.

lifespan : duration

The lifespan field of the last received message. Updated whenever a new message arrives. lifespanChanged is emitted on every update.

liveliness : uint8_t

The liveliness field of the last received message. Updated whenever a new message arrives. livelinessChanged is emitted on every update.

livelinessLeaseDuration : duration

The livelinessLeaseDuration field of the last received message. Updated whenever a new message arrives. livelinessLeaseDurationChanged is emitted on every update.

message : qoSProfile

The last message received on topic. Updated whenever a new message arrives.

reliability : uint8_t

The reliability field of the last received message. Updated whenever a new message arrives. reliabilityChanged is emitted on every update.

Signal Documentation

messageReceived(qoSProfile msg)

Emitted when a new qoSProfile arrives on topic. msg contains the received value.