Struct MetadataListener

pub struct MetadataListener { /* private fields */ }

An owned listener for metadata events.

This is created by MetadataListenerLocalBuilder and will receive events as long as it is alive. When this gets dropped, the listener gets unregistered and no events will be received by it.

Examples

let metadata_listener = metadata.add_listener_local()
    .property(|subject, key, type_, value| {
        println!("Metadata property update: subject {subject}, key {key:?}, type {type_:?}, value {value:?}");
        0
    })
    .register();

Trait Implementations

impl Drop for MetadataListener

fn drop(&mut self)

Executes the destructor for this type.

impl Listener for MetadataListener