Struct TopicInfo 

pub struct TopicInfo {
    pub topic: String,
    pub message_type: String,
    pub publishers: Vec<String>,
    pub subscribers: Vec<String>,
    pub created_at: u64,
    pub last_publisher_added: Option<u64>,
    pub last_subscriber_added: Option<u64>,
    pub description: Option<String>,
    pub metadata: HashMap<String, String>,
}

Information about a topic

Fields

topic: String

Topic path (e.g., “/sensor/camera/rgb”)

message_type: String

Message type name (e.g., “Image”, “LaserScan”)

publishers: Vec<String>

Nodes that publish to this topic

subscribers: Vec<String>

Nodes that subscribe to this topic

created_at: u64

When the topic was first registered

last_publisher_added: Option<u64>

Last time a publisher was added

last_subscriber_added: Option<u64>

Last time a subscriber was added

description: Option<String>

Optional description

metadata: HashMap<String, String>

Custom metadata

Implementations

impl TopicInfo

pub fn new(topic: &str, message_type: &str) -> Self

Create new topic info

pub fn add_publisher(&mut self, node_id: &str)

Add a publisher

pub fn add_subscriber(&mut self, node_id: &str)

Add a subscriber

pub fn remove_publisher(&mut self, node_id: &str)

Remove a publisher

pub fn remove_subscriber(&mut self, node_id: &str)

Remove a subscriber

pub fn has_publishers(&self) -> bool

Check if topic has any publishers

pub fn has_subscribers(&self) -> bool

Check if topic has any subscribers

pub fn is_orphaned(&self) -> bool

Check if topic is orphaned (no publishers or no subscribers)

pub fn publisher_count(&self) -> usize

Get the number of publishers

pub fn subscriber_count(&self) -> usize

Get the number of subscribers

Trait Implementations

impl Clone for TopicInfo

fn clone(&self) -> TopicInfo

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for TopicInfo

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for TopicInfo

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for TopicInfo

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.