EllieBot-docs/content/Ellie/Marmalade/canary-lifecycle.md

+++ title = "Canary lifecycle!" description = "This documents the lifecycle of canaries" weight = 3 +++

Canary Lifecycle

You can override several methods to hook into command handler's lifecycle. These methods start with Exec*

• ExecOnMessageAsync runs first right after any message was received
• ExecInputTransformAsync runs after ExecOnMessageAsync and allows you to transform the message content before the bot looks for the matching command
• ExecPreCommandAsync runs after a command was found but not executed, allowing you to potentially prevent command execution
• ExecPostCommandAsync runs if the command was successfully executed
• ExecOnNoCommandAsync runs instead of ExecPostCommandAsync if no command was found for a message

Besides that, canaries have 2 methods with which you can initialize and cleanup your canary

• InitializeAsync Runs when the marmalade which contains this canary is being loaded
• DisposeAsync Runs when the marmalade which contains this canary is being unloaded