Trait MessageObserver 

pub trait MessageObserver: Send + Sync {
    // Provided methods
    fn on_system_command(
        &self,
        frame: &Frame,
        command: &SystemCommand,
        command_type: SystemType,
    ) -> Result<()> { ... }
    fn on_message_command(
        &self,
        frame: &Frame,
        command: &PayloadCommand,
        command_type: PayloadType,
    ) -> Result<()> { ... }
    fn on_notification_command(
        &self,
        frame: &Frame,
        command: &NotificationCommand,
        command_type: NotificationType,
    ) -> Result<()> { ... }
    fn on_custom_command(
        &self,
        frame: &Frame,
        command: &CustomCommand,
    ) -> Result<()> { ... }
    fn on_unknown_command(&self, frame: &Frame) -> Result<()> { ... }
}

消息观察者 trait

实现此 trait 以处理不同类型的消息事件

Provided Methods

fn on_system_command( &self, frame: &Frame, command: &SystemCommand, command_type: SystemType, ) -> Result<()>

处理系统命令

fn on_message_command( &self, frame: &Frame, command: &PayloadCommand, command_type: PayloadType, ) -> Result<()>

处理载荷命令

fn on_notification_command( &self, frame: &Frame, command: &NotificationCommand, command_type: NotificationType, ) -> Result<()>

处理通知命令

fn on_custom_command( &self, frame: &Frame, command: &CustomCommand, ) -> Result<()>

处理自定义命令

fn on_unknown_command(&self, frame: &Frame) -> Result<()>

处理未知命令

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors