/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.jooby.internal.undertow;
import static java.util.Objects.requireNonNull;
import java.io.InputStream;
import java.nio.ByteBuffer;
import java.nio.channels.Channels;
import java.nio.channels.FileChannel;
import java.util.Collections;
import java.util.List;
import java.util.Optional;
import org.jooby.spi.NativeResponse;
import org.jooby.spi.NativeWebSocket;
import org.slf4j.LoggerFactory;
import com.google.common.collect.ImmutableList;
import io.undertow.Handlers;
import io.undertow.io.IoCallback;
import io.undertow.server.HttpServerExchange;
import io.undertow.util.HeaderMap;
import io.undertow.util.HeaderValues;
import io.undertow.util.HttpString;
public class UndertowResponse implements NativeResponse {
private HttpServerExchange exchange;
private volatile boolean endExchange = true;
public UndertowResponse(final HttpServerExchange exchange) {
this.exchange = exchange;
}
@Override
public List<String> headers(final String name) {
requireNonNull(name, "A header's name is required.");
HeaderValues values = exchange.getResponseHeaders().get(name);
return values == null ? Collections.emptyList() : values;
}
@Override
public Optional<String> header(final String name) {
String value = exchange.getResponseHeaders().getFirst(name);
return Optional.ofNullable(value);
}
@Override
public void header(final String name, final String value) {
exchange.getResponseHeaders().put(HttpString.tryFromString(name), value);
}
@Override
public void header(final String name, final Iterable<String> values) {
HeaderMap headers = exchange.getResponseHeaders();
headers.putAll(HttpString.tryFromString(name), ImmutableList.copyOf(values));
}
@Override
public void send(final byte[] bytes) throws Exception {
send(ByteBuffer.wrap(bytes));
}
@Override
public void send(final ByteBuffer buffer) throws Exception {
exchange.getResponseSender().send(buffer);
}
@Override
public void send(final InputStream stream) throws Exception {
endExchange = false;
new ChunkedStream().send(Channels.newChannel(stream), exchange,
new LogIoCallback(IoCallback.END_EXCHANGE));
}
@Override
public void send(final FileChannel channel) throws Exception {
endExchange = false;
new ChunkedStream().send(channel, exchange, new LogIoCallback(IoCallback.END_EXCHANGE));
}
@Override
public void send(final FileChannel channel, final long position, final long count)
throws Exception {
endExchange = false;
channel.position(position);
new ChunkedStream(count).send(channel, exchange, new LogIoCallback(IoCallback.END_EXCHANGE));
}
@Override
public int statusCode() {
return exchange.getStatusCode();
}
@Override
public void statusCode(final int code) {
exchange.setStatusCode(code);
}
@Override
public boolean committed() {
return exchange.isComplete();
}
@Override
public void reset() {
exchange.getResponseHeaders().clear();
}
@Override
public void end() {
NativeWebSocket ws = exchange.getAttachment(UndertowRequest.SOCKET);
if (ws != null) {
try {
Handlers.websocket((wsExchange, channel) -> {
((UndertowWebSocket) ws).connect(channel);
}).handleRequest(exchange);
} catch (Exception ex) {
LoggerFactory.getLogger(NativeResponse.class).error("Upgrade result in exception", ex);
} finally {
exchange.removeAttachment(UndertowRequest.SOCKET);
}
}
if (endExchange) {
exchange.endExchange();
}
}
}