io.undertow.io.AsyncReceiverImpl Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
/*
* JBoss, Home of Professional Open Source.
* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* 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.undertow.io;
import io.undertow.UndertowLogger;
import io.undertow.UndertowMessages;
import io.undertow.connector.PooledByteBuffer;
import io.undertow.server.Connectors;
import io.undertow.server.HttpHandler;
import io.undertow.server.HttpServerExchange;
import io.undertow.util.Headers;
import io.undertow.util.StatusCodes;
import org.xnio.ChannelListener;
import org.xnio.channels.StreamSourceChannel;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.charset.Charset;
import java.nio.charset.CharsetDecoder;
import java.nio.charset.StandardCharsets;
/**
* @author Stuart Douglas
*/
public class AsyncReceiverImpl implements Receiver {
private static final ErrorCallback END_EXCHANGE = new ErrorCallback() {
@Override
public void error(HttpServerExchange exchange, IOException e) {
e.printStackTrace();
exchange.setStatusCode(StatusCodes.INTERNAL_SERVER_ERROR);
UndertowLogger.REQUEST_IO_LOGGER.ioException(e);
exchange.endExchange();
}
};
public static final byte[] EMPTY_BYTE_ARRAY = new byte[0];
private final HttpServerExchange exchange;
private final StreamSourceChannel channel;
private int maxBufferSize = -1;
private boolean paused = false;
private boolean done = false;
public AsyncReceiverImpl(HttpServerExchange exchange) {
this.exchange = exchange;
this.channel = exchange.getRequestChannel();
if (channel == null) {
throw UndertowMessages.MESSAGES.requestChannelAlreadyProvided();
}
}
@Override
public void setMaxBufferSize(int maxBufferSize) {
this.maxBufferSize = maxBufferSize;
}
@Override
public void receiveFullString(final FullStringCallback callback, ErrorCallback errorCallback) {
receiveFullString(callback, errorCallback, StandardCharsets.ISO_8859_1);
}
@Override
public void receiveFullString(FullStringCallback callback) {
receiveFullString(callback, END_EXCHANGE, StandardCharsets.ISO_8859_1);
}
@Override
public void receivePartialString(PartialStringCallback callback, ErrorCallback errorCallback) {
receivePartialString(callback, errorCallback, StandardCharsets.ISO_8859_1);
}
@Override
public void receivePartialString(PartialStringCallback callback) {
receivePartialString(callback, END_EXCHANGE, StandardCharsets.ISO_8859_1);
}
@Override
public void receiveFullString(final FullStringCallback callback, final ErrorCallback errorCallback, final Charset charset) {
if(done) {
throw UndertowMessages.MESSAGES.requestBodyAlreadyRead();
}
final ErrorCallback error = errorCallback == null ? END_EXCHANGE : errorCallback;
if (callback == null) {
throw UndertowMessages.MESSAGES.argumentCannotBeNull("callback");
}
if (exchange.isRequestComplete()) {
callback.handle(exchange, "");
return;
}
String contentLengthString = exchange.getRequestHeaders().getFirst(Headers.CONTENT_LENGTH);
long contentLength;
final ByteArrayOutputStream sb;
if (contentLengthString != null) {
contentLength = Long.parseLong(contentLengthString);
if (contentLength > Integer.MAX_VALUE) {
error.error(exchange, new RequestToLargeException());
return;
}
sb = new ByteArrayOutputStream((int) contentLength);
} else {
contentLength = -1;
sb = new ByteArrayOutputStream();
}
if (maxBufferSize > 0) {
if (contentLength > maxBufferSize) {
error.error(exchange, new RequestToLargeException());
return;
}
}
PooledByteBuffer pooled = exchange.getConnection().getByteBufferPool().allocate();
final ByteBuffer buffer = pooled.getBuffer();
try {
int res;
do {
try {
buffer.clear();
res = channel.read(buffer);
if (res == -1) {
done = true;
callback.handle(exchange, sb.toString(charset.name()));
return;
} else if (res == 0) {
channel.getReadSetter().set(new ChannelListener() {
@Override
public void handleEvent(StreamSourceChannel channel) {
if(done) {
return;
}
PooledByteBuffer pooled = exchange.getConnection().getByteBufferPool().allocate();
final ByteBuffer buffer = pooled.getBuffer();
try {
int res;
do {
try {
buffer.clear();
res = channel.read(buffer);
if (res == -1) {
done = true;
Connectors.executeRootHandler(new HttpHandler() {
@Override
public void handleRequest(HttpServerExchange exchange) throws Exception {
callback.handle(exchange, sb.toString(charset.name()));
}
}, exchange);
return;
} else if (res == 0) {
return;
} else {
buffer.flip();
while (buffer.hasRemaining()) {
sb.write(buffer.get());
}
if (maxBufferSize > 0 && sb.size() > maxBufferSize) {
Connectors.executeRootHandler(new HttpHandler() {
@Override
public void handleRequest(HttpServerExchange exchange) throws Exception {
error.error(exchange, new RequestToLargeException());
}
}, exchange);
return;
}
}
} catch (final IOException e) {
Connectors.executeRootHandler(new HttpHandler() {
@Override
public void handleRequest(HttpServerExchange exchange) throws Exception {
error.error(exchange, e);
}
}, exchange);
return;
}
} while (true);
} finally {
pooled.close();
}
}
});
channel.resumeReads();
return;
} else {
buffer.flip();
while (buffer.hasRemaining()) {
sb.write(buffer.get());
}
if (maxBufferSize > 0 && sb.size() > maxBufferSize) {
error.error(exchange, new RequestToLargeException());
return;
}
}
} catch (IOException e) {
error.error(exchange, e);
return;
}
} while (true);
} finally {
pooled.close();
}
}
@Override
public void receiveFullString(FullStringCallback callback, Charset charset) {
receiveFullString(callback, END_EXCHANGE, charset);
}
@Override
public void receivePartialString(final PartialStringCallback callback, final ErrorCallback errorCallback, Charset charset) {
if(done) {
throw UndertowMessages.MESSAGES.requestBodyAlreadyRead();
}
final ErrorCallback error = errorCallback == null ? END_EXCHANGE : errorCallback;
if (callback == null) {
throw UndertowMessages.MESSAGES.argumentCannotBeNull("callback");
}
if (exchange.isRequestComplete()) {
callback.handle(exchange, "", true);
return;
}
String contentLengthString = exchange.getRequestHeaders().getFirst(Headers.CONTENT_LENGTH);
long contentLength;
if (contentLengthString != null) {
contentLength = Long.parseLong(contentLengthString);
if (contentLength > Integer.MAX_VALUE) {
error.error(exchange, new RequestToLargeException());
return;
}
} else {
contentLength = -1;
}
if (maxBufferSize > 0) {
if (contentLength > maxBufferSize) {
error.error(exchange, new RequestToLargeException());
return;
}
}
final CharsetDecoder decoder = charset.newDecoder();
PooledByteBuffer pooled = exchange.getConnection().getByteBufferPool().allocate();
final ByteBuffer buffer = pooled.getBuffer();
channel.getReadSetter().set(new ChannelListener() {
@Override
public void handleEvent(final StreamSourceChannel channel) {
if(done || paused) {
return;
}
PooledByteBuffer pooled = exchange.getConnection().getByteBufferPool().allocate();
final ByteBuffer buffer = pooled.getBuffer();
try {
int res;
do {
if(paused) {
return;
}
try {
buffer.clear();
res = channel.read(buffer);
if (res == -1) {
done = true;
Connectors.executeRootHandler(new HttpHandler() {
@Override
public void handleRequest(HttpServerExchange exchange) throws Exception {
callback.handle(exchange, "", true);
}
}, exchange);
return;
} else if (res == 0) {
return;
} else {
buffer.flip();
final CharBuffer cb = decoder.decode(buffer);
Connectors.executeRootHandler(new HttpHandler() {
@Override
public void handleRequest(HttpServerExchange exchange) throws Exception {
callback.handle(exchange, cb.toString(), false);
if (!paused) {
channel.resumeReads();
} else {
System.out.println("paused");
}
}
}, exchange);
}
} catch (final IOException e) {
Connectors.executeRootHandler(new HttpHandler() {
@Override
public void handleRequest(HttpServerExchange exchange) throws Exception {
error.error(exchange, e);
}
}, exchange);
return;
}
} while (true);
} finally {
pooled.close();
}
}
});
try {
int res;
do {
try {
buffer.clear();
res = channel.read(buffer);
if (res == -1) {
done = true;
callback.handle(exchange, "", true);
return;
} else if (res == 0) {
channel.resumeReads();
return;
} else {
buffer.flip();
CharBuffer cb = decoder.decode(buffer);
callback.handle(exchange, cb.toString(), false);
if(paused) {
return;
}
}
} catch (IOException e) {
error.error(exchange, e);
return;
}
} while (true);
} finally {
pooled.close();
}
}
@Override
public void receivePartialString(PartialStringCallback callback, Charset charset) {
receivePartialString(callback, END_EXCHANGE, charset);
}
@Override
public void receiveFullBytes(final FullBytesCallback callback, final ErrorCallback errorCallback) {
if(done) {
throw UndertowMessages.MESSAGES.requestBodyAlreadyRead();
}
final ErrorCallback error = errorCallback == null ? END_EXCHANGE : errorCallback;
if (callback == null) {
throw UndertowMessages.MESSAGES.argumentCannotBeNull("callback");
}
if (exchange.isRequestComplete()) {
callback.handle(exchange, EMPTY_BYTE_ARRAY);
return;
}
String contentLengthString = exchange.getRequestHeaders().getFirst(Headers.CONTENT_LENGTH);
long contentLength;
final ByteArrayOutputStream sb;
if (contentLengthString != null) {
contentLength = Long.parseLong(contentLengthString);
if (contentLength > Integer.MAX_VALUE) {
error.error(exchange, new RequestToLargeException());
return;
}
sb = new ByteArrayOutputStream((int) contentLength);
} else {
contentLength = -1;
sb = new ByteArrayOutputStream();
}
if (maxBufferSize > 0) {
if (contentLength > maxBufferSize) {
error.error(exchange, new RequestToLargeException());
return;
}
}
PooledByteBuffer pooled = exchange.getConnection().getByteBufferPool().allocate();
final ByteBuffer buffer = pooled.getBuffer();
try {
int res;
do {
try {
buffer.clear();
res = channel.read(buffer);
if (res == -1) {
done = true;
callback.handle(exchange, sb.toByteArray());
return;
} else if (res == 0) {
channel.getReadSetter().set(new ChannelListener() {
@Override
public void handleEvent(StreamSourceChannel channel) {
if(done) {
return;
}
PooledByteBuffer pooled = exchange.getConnection().getByteBufferPool().allocate();
final ByteBuffer buffer = pooled.getBuffer();
try {
int res;
do {
try {
buffer.clear();
res = channel.read(buffer);
if (res == -1) {
done = true;
Connectors.executeRootHandler(new HttpHandler() {
@Override
public void handleRequest(HttpServerExchange exchange) throws Exception {
callback.handle(exchange, sb.toByteArray());
}
}, exchange);
return;
} else if (res == 0) {
return;
} else {
buffer.flip();
while (buffer.hasRemaining()) {
sb.write(buffer.get());
}
if (maxBufferSize > 0 && sb.size() > maxBufferSize) {
Connectors.executeRootHandler(new HttpHandler() {
@Override
public void handleRequest(HttpServerExchange exchange) throws Exception {
error.error(exchange, new RequestToLargeException());
}
}, exchange);
return;
}
}
} catch (final Exception e) {
Connectors.executeRootHandler(new HttpHandler() {
@Override
public void handleRequest(HttpServerExchange exchange) throws Exception {
error.error(exchange, new IOException(e));
}
}, exchange);
return;
}
} while (true);
} finally {
pooled.close();
}
}
});
channel.resumeReads();
return;
} else {
buffer.flip();
while (buffer.hasRemaining()) {
sb.write(buffer.get());
}
if (maxBufferSize > 0 && sb.size() > maxBufferSize) {
error.error(exchange, new RequestToLargeException());
return;
}
}
} catch (IOException e) {
error.error(exchange, e);
return;
}
} while (true);
} finally {
pooled.close();
}
}
@Override
public void receiveFullBytes(FullBytesCallback callback) {
receiveFullBytes(callback, END_EXCHANGE);
}
@Override
public void receivePartialBytes(final PartialBytesCallback callback, final ErrorCallback errorCallback) {
if(done) {
throw UndertowMessages.MESSAGES.requestBodyAlreadyRead();
}
final ErrorCallback error = errorCallback == null ? END_EXCHANGE : errorCallback;
if (callback == null) {
throw UndertowMessages.MESSAGES.argumentCannotBeNull("callback");
}
if (exchange.isRequestComplete()) {
callback.handle(exchange, EMPTY_BYTE_ARRAY, true);
return;
}
String contentLengthString = exchange.getRequestHeaders().getFirst(Headers.CONTENT_LENGTH);
long contentLength;
if (contentLengthString != null) {
contentLength = Long.parseLong(contentLengthString);
if (contentLength > Integer.MAX_VALUE) {
error.error(exchange, new RequestToLargeException());
return;
}
} else {
contentLength = -1;
}
if (maxBufferSize > 0) {
if (contentLength > maxBufferSize) {
error.error(exchange, new RequestToLargeException());
return;
}
}
PooledByteBuffer pooled = exchange.getConnection().getByteBufferPool().allocate();
final ByteBuffer buffer = pooled.getBuffer();
channel.getReadSetter().set(new ChannelListener() {
@Override
public void handleEvent(final StreamSourceChannel channel) {
if(done || paused) {
return;
}
PooledByteBuffer pooled = exchange.getConnection().getByteBufferPool().allocate();
final ByteBuffer buffer = pooled.getBuffer();
try {
int res;
do {
if(paused) {
return;
}
try {
buffer.clear();
res = channel.read(buffer);
if (res == -1) {
done = true;
Connectors.executeRootHandler(new HttpHandler() {
@Override
public void handleRequest(HttpServerExchange exchange) throws Exception {
callback.handle(exchange, EMPTY_BYTE_ARRAY, true);
}
}, exchange);
return;
} else if (res == 0) {
return;
} else {
buffer.flip();
final byte[] data = new byte[buffer.remaining()];
buffer.get(data);
Connectors.executeRootHandler(new HttpHandler() {
@Override
public void handleRequest(HttpServerExchange exchange) throws Exception {
callback.handle(exchange, data, false);
if (!paused) {
channel.resumeReads();
}
}
}, exchange);
}
} catch (final IOException e) {
Connectors.executeRootHandler(new HttpHandler() {
@Override
public void handleRequest(HttpServerExchange exchange) throws Exception {
error.error(exchange, e);
}
}, exchange);
return;
}
} while (true);
} finally {
pooled.close();
}
}
});
try {
int res;
do {
try {
buffer.clear();
res = channel.read(buffer);
if (res == -1) {
done = true;
callback.handle(exchange, EMPTY_BYTE_ARRAY, true);
return;
} else if (res == 0) {
channel.resumeReads();
return;
} else {
buffer.flip();
byte[] data = new byte[buffer.remaining()];
buffer.get(data);
callback.handle(exchange, data, false);
if(paused) {
return;
}
}
} catch (IOException e) {
error.error(exchange, e);
return;
}
} while (true);
} finally {
pooled.close();
}
}
@Override
public void receivePartialBytes(PartialBytesCallback callback) {
receivePartialBytes(callback, END_EXCHANGE);
}
@Override
public void pause() {
this.paused = true;
channel.suspendReads();
}
@Override
public void resume() {
this.paused = false;
channel.wakeupReads();
}
}