io.jooby

Interface Route.After

Enclosing class:

Route

public static interface Route.After

Execute application logic after a response has been generated by a route handler. For functional handler the value is accessible and you are able to modify the response:

 {
   after((ctx, result) -> {
     // Modify response
     ctx.setResponseHeader("foo", "bar");
     // do something with value:
     log.info("{} produces {}", ctx, result);
   });

   get("/", ctx -> {
     return "Functional value";
   });
 }
 

For side-effect handler (direct use of send methods, outputstream, writer, etc.) you are not allowed to modify the response or access to the value (value is always null):

 {
   after((ctx, result) -> {
     // Always null:
     assertNull(result);

     // Response started is set to: true
     assertTrue(ctx.isResponseStarted());
   });

   get("/", ctx -> {
     return ctx.send("Side effect");
   });
 }
 

Since:

2.0.0

Author:

edgar

Method Summary

Modifier and Type	Method and Description
void	apply(Context ctx, Object result, Throwable failure) Execute application logic on a route response.
default Route.After	then(Route.After next) Chain this filter with next one and produces a new after filter.

Method Detail

then

@Nonnull
default Route.After then(@Nonnull
                                  Route.After next)

Chain this filter with next one and produces a new after filter.

Parameters:

next - Next filter.

Returns:

A new filter.

apply

void apply(@Nonnull
           Context ctx,
           @Nullable
           Object result,
           @Nullable
           Throwable failure)
    throws Exception

Execute application logic on a route response.

Parameters:

ctx - Web context.

result - Response generated by route handler.

failure - Uncaught exception generated by route handler.

Throws:

Exception - If something goes wrong.