io.inverno.mod.http.server.internal.HttpServerController Maven / Gradle / Ivy

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/*
 * Copyright 2022 Jeremy KUHN
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License 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 io.inverno.mod.http.server.internal;

import io.inverno.core.annotation.Bean;
import io.inverno.core.annotation.Overridable;
import io.inverno.core.annotation.Wrapper;
import io.inverno.mod.base.Charsets;
import io.inverno.mod.http.base.ExchangeContext;
import io.inverno.mod.http.base.NotFoundException;
import io.inverno.mod.http.server.ErrorExchange;
import io.inverno.mod.http.server.Exchange;
import io.inverno.mod.http.server.ServerController;
import io.netty.buffer.Unpooled;
import java.util.function.Supplier;

/**
 * 
 * The controller used by the HTTP server to handle exchanges, error exchanges and create exchange contexts.
 * 
 * 
 * 
 * By default this returns {@code Hello} when a request is made to the root path {@code /}.
 * 
 * 
 * @author Jeremy Kuhn
 * @since 1.5
 */
@Bean( name = "controller" )
@Wrapper
@Overridable 
public class HttpServerController implements Supplier, ? extends ErrorExchange>> {

	@Override
	public ServerController, ? extends ErrorExchange> get() {
		return (ServerController, ErrorExchange>)exchange -> {
			if(exchange.request().getPathAbsolute().equalsIgnoreCase("/")) {
				exchange.response().body().raw().value(Unpooled.unreleasableBuffer(Unpooled.copiedBuffer("Hello", Charsets.DEFAULT)));
			}
			else {
				throw new NotFoundException();
			}
		};
	}
}