docs/src/test/java/docs/http/javadsl/ExceptionHandlerInSealExample.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * license agreements; and to You under the Apache License, version 2.0:
 *
 *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * This file is part of the Apache Pekko project, which was derived from Akka.
 */

/*
 * Copyright (C) 2009-2022 Lightbend Inc. <https://www.lightbend.com>
 */

package docs.http.javadsl;

// #seal-handler-example
import org.apache.pekko.http.javadsl.model.StatusCodes;
import org.apache.pekko.http.javadsl.server.AllDirectives;
import org.apache.pekko.http.javadsl.server.ExceptionHandler;
import org.apache.pekko.http.javadsl.server.PathMatchers;
import org.apache.pekko.http.javadsl.server.RejectionHandler;
import org.apache.pekko.http.javadsl.server.Route;

import static org.apache.pekko.http.javadsl.server.PathMatchers.integerSegment;

public class ExceptionHandlerInSealExample extends AllDirectives {

  public Route createRoute() {
    final ExceptionHandler divByZeroHandler =
        ExceptionHandler.newBuilder()
            .match(
                ArithmeticException.class,
                x -> complete(StatusCodes.BAD_REQUEST, "You've got your arithmetic wrong, fool!"))
            .build();

    final RejectionHandler defaultHandler = RejectionHandler.defaultHandler();

    return path(
            PathMatchers.segment("divide").slash(integerSegment()).slash(integerSegment()),
            (a, b) -> complete("The result is " + (a / b)))
        .seal(defaultHandler, divByZeroHandler);
  }
}
// #seal-handler-example