Struct CustomMessageRegistry 

pub struct CustomMessageRegistry { /* private fields */ }

Registry for deserializing CustomMessage types from JSON.

Each custom message type that supports serialization must register a deserializer keyed by its CustomMessage::type_name.

Implementations

impl CustomMessageRegistry

pub fn new() -> Self

Create an empty registry.

pub fn register( &mut self, type_name: impl Into<String>, deserializer: Box<dyn Fn(Value) -> Result<Box<dyn CustomMessage>, String> + Send + Sync>, )

Register a deserializer for a custom message type.

The type_name must match the value returned by the corresponding CustomMessage::type_name implementation.

pub fn register_type<T>(&mut self, type_name: impl Into<String>)

where T: CustomMessage + DeserializeOwned + 'static,

Convenience method: register a type that implements serde::Deserialize.

Equivalent to calling register with a closure that deserializes via serde_json::from_value.

pub fn deserialize( &self, type_name: &str, value: Value, ) -> Result<Box<dyn CustomMessage>, String>

Deserialize a custom message from its type name and JSON payload.

Errors

Returns Err if no deserializer is registered for type_name or if deserialization fails.

pub fn has_type_name(&self, type_name: &str) -> bool

Returns true if a deserializer is registered for type_name.

Trait Implementations

impl Debug for CustomMessageRegistry

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

Formats the value using the given formatter.

impl Default for CustomMessageRegistry

fn default() -> Self

Returns the “default value” for a type.