Updating typed request handler interfaces

ask-sdk-core/src/com/amazon/ask/dispatcher/request/handler/impl/AuthorizationGrantRequestHandler.java

@@ -0,0 +1,59 @@
+/*
+* Copyright 2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+*
+* Licensed under the Apache License, Version 2.0 (the "License"). You may not use this file
+* except in compliance with the License. A copy of the License is located at
+*
+* http://aws.amazon.com/apache2.0/
+*
+* or in the "license" file accompanying this file. This file is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for
+* the specific language governing permissions and limitations under the License.
+*/
+
+package com.amazon.ask.dispatcher.request.handler.impl;
+
+import com.amazon.ask.dispatcher.request.handler.HandlerInput;
+import com.amazon.ask.dispatcher.request.handler.RequestHandler;
+import com.amazon.ask.model.authorization.AuthorizationGrantRequest;
+import com.amazon.ask.model.Response;
+
+import java.util.Optional;
+
+/**
+ * Request handler for AuthorizationGrantRequest requests.
+ */
+public interface AuthorizationGrantRequestHandler extends RequestHandler {
+
+    /**
+     * Returns true if the handler can dispatch the current request
+     *
+     * @param input input to the request handler
+     * @param authorizationGrantRequest AuthorizationGrantRequest request
+     * @return true if the handler is capable of handling the current request and/or state
+     */
+    boolean canHandle(HandlerInput input, AuthorizationGrantRequest authorizationGrantRequest);
+
+    /**
+     * Handles the request.
+     *
+     * @param input input to the request handler
+     * @param authorizationGrantRequest AuthorizationGrantRequest request
+     * @return output from the handler.
+     */
+    Optional<Response> handle(HandlerInput input, AuthorizationGrantRequest authorizationGrantRequest);
+
+    @Override
+    default boolean canHandle(HandlerInput handlerInput) {
+        if (handlerInput.getRequest() instanceof AuthorizationGrantRequest) {
+            return canHandle(handlerInput, (AuthorizationGrantRequest)handlerInput.getRequest());
+        }
+        return false;
+    }
+
+    @Override
+    default Optional<Response> handle(HandlerInput handlerInput) {
+        return handle(handlerInput, (AuthorizationGrantRequest)handlerInput.getRequest());
+    }
+
+}