Trait mongodb::event::command::CommandEventHandler [−][src]
Applications can implement this trait to specify custom logic to run on each command event sent by the driver.
struct FailedCommandLogger; impl CommandEventHandler for FailedCommandLogger { fn handle_command_failed_event(&self, event: CommandFailedEvent) { eprintln!("Failed command: {:?}", event); } } let handler: Arc<dyn CommandEventHandler> = Arc::new(FailedCommandLogger); let options = ClientOptions::builder() .command_event_handler(handler) .build(); let client = Client::with_options(options)?; // Do things with the client, and failed command events will be logged to stderr.
Provided methods
fn handle_command_started_event(&self, _event: CommandStartedEvent)
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A Client
will call this method on each registered handler
whenever a database command is initiated.
fn handle_command_succeeded_event(&self, _event: CommandSucceededEvent)
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A Client
will call this method on each registered handler
whenever a database command successfully completes.
fn handle_command_failed_event(&self, _event: CommandFailedEvent)
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A Client
will call this method on each registered handler
whenever a database command fails to complete successfully.