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Version: v9.0.x

Routing

note

Pre-requisite readings​

Synopsis

Learn how to hook a route to the IBC router for the custom IBC module.

As mentioned above, modules must implement the IBCModule interface (which contains both channel handshake callbacks and packet handling callbacks). The concrete implementation of this interface must be registered with the module name as a route on the IBC Router.

// app.go
func NewApp(...args) *App {
  // ...

  // Create static IBC router, add module routes, then set and seal it
  ibcRouter := port.NewRouter()

  ibcRouter.AddRoute(ibctransfertypes.ModuleName, transferModule)
  // Note: moduleCallbacks must implement IBCModule interface
  ibcRouter.AddRoute(moduleName, moduleCallbacks)

  // Setting Router will finalize all routes by sealing router
  // No more routes can be added
  app.IBCKeeper.SetRouter(ibcRouter)

  // ...
}