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Introduce support for Netty 5 Buffer

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This commit introduces support for Netty 5's Buffer, in the form of
Netty5DataBuffer. Because of the new API offered by Buffer, several
changes have been made to the DataBuffer API:

- CloseableDataBuffer is a simpler alternative to PooledDataBuffer, and
  implemented by Netty5DataBuffer. DataBufferUtils::release can now
  handle CloseableDataBuffer as well as PooledDataBuffer.
- PooledDataBuffer::touch has been moved into a separate interface:
  TouchableDataBuffer, which is implemented by Netty5DataBuffer.
- The capacity of DataBuffers can no longer be reduced, they can only
  grow larger. As a consequence, DataBuffer::capacity(int) has been
  deprecated, but ensureWritable (formally ensureCapacity) still exists.
- DataBuffer::slice and retainedSlice have been deprecated in favor of
  split, a new method that ensures that memory regions do not overlap.
- DataBuffer::asByteBuffer has been deprecated in favor of toByteBuffer,
  a new method that returns a copy, instead of shared data.
- DataBufferFactory::allocateBuffer has been deprecated in favor of
  allocateBuffer(int).

Closes gh-28874
This commit is contained in:
Arjen Poutsma
2022-07-27 15:24:14 +02:00
parent 8a61866ee2
commit 9c33d2707a
64 changed files with 1663 additions and 360 deletions
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5
spring-core/src/main/java/org/springframework/core/codec/AbstractSingleValueEncoder.java
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@@ -1,5 +1,5 @@
/*
* Copyright 2002-2020 the original author or authors.
* Copyright 2002-2022 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -25,7 +25,6 @@ import org.springframework.core.ResolvableType;
import org.springframework.core.io.buffer.DataBuffer;
import org.springframework.core.io.buffer.DataBufferFactory;
import org.springframework.core.io.buffer.DataBufferUtils;
import org.springframework.core.io.buffer.PooledDataBuffer;
import org.springframework.lang.Nullable;
import org.springframework.util.MimeType;
@@ -52,7 +51,7 @@ public abstract class AbstractSingleValueEncoder<T> extends AbstractEncoder<T> {
return Flux.from(inputStream)
.take(1)
.concatMap(value -> encode(value, bufferFactory, elementType, mimeType, hints))
.doOnDiscard(PooledDataBuffer.class, DataBufferUtils::release);
.doOnDiscard(DataBuffer.class, DataBufferUtils::release);
}
/**

13
spring-core/src/main/java/org/springframework/core/codec/ByteBufferDecoder.java
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@@ -1,5 +1,5 @@
/*
* Copyright 2002-2019 the original author or authors.
* Copyright 2002-2022 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -51,15 +51,12 @@ public class ByteBufferDecoder extends AbstractDataBufferDecoder<ByteBuffer> {
public ByteBuffer decode(DataBuffer dataBuffer, ResolvableType elementType,
@Nullable MimeType mimeType, @Nullable Map<String, Object> hints) {
int byteCount = dataBuffer.readableByteCount();
ByteBuffer copy = ByteBuffer.allocate(byteCount);
copy.put(dataBuffer.asByteBuffer());
copy.flip();
DataBufferUtils.release(dataBuffer);
ByteBuffer result = dataBuffer.toByteBuffer();
if (logger.isDebugEnabled()) {
logger.debug(Hints.getLogPrefix(hints) + "Read " + byteCount + " bytes");
logger.debug(Hints.getLogPrefix(hints) + "Read " + dataBuffer.readableByteCount() + " bytes");
}
return copy;
DataBufferUtils.release(dataBuffer);
return result;
}
}

4
spring-core/src/main/java/org/springframework/core/codec/DataBufferDecoder.java
View File

@@ -1,5 +1,5 @@
/*
* Copyright 2002-2019 the original author or authors.
* Copyright 2002-2022 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -35,7 +35,7 @@ import org.springframework.util.MimeTypeUtils;
* after they have been consumed. In addition, if using {@code Flux} or
* {@code Mono} operators such as flatMap, reduce, and others that prefetch,
* cache, and skip or filter out data items internally, please add
* {@code doOnDiscard(PooledDataBuffer.class, DataBufferUtils::release)} to the
* {@code doOnDiscard(DataBuffer.class, DataBufferUtils::release)} to the
* composition chain to ensure cached data buffers are released prior to an
* error or cancellation signal.
*

68
spring-core/src/main/java/org/springframework/core/codec/Netty5BufferDecoder.java Normal file
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@@ -0,0 +1,68 @@
/*
* Copyright 2002-2022 the original author or authors.
*
* 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
*
* https://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.springframework.core.codec;
import java.util.Map;
import io.netty5.buffer.api.Buffer;
import io.netty5.buffer.api.DefaultBufferAllocators;
import org.springframework.core.ResolvableType;
import org.springframework.core.io.buffer.DataBuffer;
import org.springframework.core.io.buffer.DataBufferUtils;
import org.springframework.core.io.buffer.Netty5DataBuffer;
import org.springframework.lang.Nullable;
import org.springframework.util.MimeType;
import org.springframework.util.MimeTypeUtils;
/**
* Decoder for {@link Buffer Buffers}.
*
* @author Violeta Georgieva
* @since 6.0
*/
public class Netty5BufferDecoder extends AbstractDataBufferDecoder<Buffer> {
public Netty5BufferDecoder() {
super(MimeTypeUtils.ALL);
}
@Override
public boolean canDecode(ResolvableType elementType, @Nullable MimeType mimeType) {
return (Buffer.class.isAssignableFrom(elementType.toClass()) &&
super.canDecode(elementType, mimeType));
}
@Override
public Buffer decode(DataBuffer dataBuffer, ResolvableType elementType,
@Nullable MimeType mimeType, @Nullable Map<String, Object> hints) {
if (logger.isDebugEnabled()) {
logger.debug(Hints.getLogPrefix(hints) + "Read " + dataBuffer.readableByteCount() + " bytes");
}
if (dataBuffer instanceof Netty5DataBuffer netty5DataBuffer) {
return netty5DataBuffer.getNativeBuffer();
}
byte[] bytes = new byte[dataBuffer.readableByteCount()];
dataBuffer.read(bytes);
Buffer buffer = DefaultBufferAllocators.preferredAllocator().copyOf(bytes);
DataBufferUtils.release(dataBuffer);
return buffer;
}
}

77
spring-core/src/main/java/org/springframework/core/codec/Netty5BufferEncoder.java Normal file
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@@ -0,0 +1,77 @@
/*
* Copyright 2002-2022 the original author or authors.
*
* 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
*
* https://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.springframework.core.codec;
import java.util.Map;
import io.netty5.buffer.api.Buffer;
import org.reactivestreams.Publisher;
import reactor.core.publisher.Flux;
import org.springframework.core.ResolvableType;
import org.springframework.core.io.buffer.DataBuffer;
import org.springframework.core.io.buffer.DataBufferFactory;
import org.springframework.core.io.buffer.Netty5DataBufferFactory;
import org.springframework.lang.Nullable;
import org.springframework.util.MimeType;
import org.springframework.util.MimeTypeUtils;
/**
* Encoder for {@link Buffer Buffers}.
*
* @author Violeta Georgieva
* @since 6.0
*/
public class Netty5BufferEncoder extends AbstractEncoder<Buffer> {
public Netty5BufferEncoder() {
super(MimeTypeUtils.ALL);
}
@Override
public boolean canEncode(ResolvableType type, @Nullable MimeType mimeType) {
Class<?> clazz = type.toClass();
return super.canEncode(type, mimeType) && Buffer.class.isAssignableFrom(clazz);
}
@Override
public Flux<DataBuffer> encode(Publisher<? extends Buffer> inputStream,
DataBufferFactory bufferFactory, ResolvableType elementType, @Nullable MimeType mimeType,
@Nullable Map<String, Object> hints) {
return Flux.from(inputStream).map(byteBuffer ->
encodeValue(byteBuffer, bufferFactory, elementType, mimeType, hints));
}
@Override
public DataBuffer encodeValue(Buffer buffer, DataBufferFactory bufferFactory, ResolvableType valueType,
@Nullable MimeType mimeType, @Nullable Map<String, Object> hints) {
if (logger.isDebugEnabled() && !Hints.isLoggingSuppressed(hints)) {
String logPrefix = Hints.getLogPrefix(hints);
logger.debug(logPrefix + "Writing " + buffer.readableBytes() + " bytes");
}
if (bufferFactory instanceof Netty5DataBufferFactory netty5DataBufferFactory) {
return netty5DataBufferFactory.wrap(buffer);
}
byte[] bytes = new byte[buffer.readableBytes()];
buffer.readBytes(bytes, 0, bytes.length);
buffer.close();
return bufferFactory.wrap(bytes);
}
}

23
spring-core/src/main/java/org/springframework/core/codec/StringDecoder.java
View File

@@ -35,7 +35,6 @@ import org.springframework.core.ResolvableType;
import org.springframework.core.io.buffer.DataBuffer;
import org.springframework.core.io.buffer.DataBufferUtils;
import org.springframework.core.io.buffer.LimitedDataBufferList;
import org.springframework.core.io.buffer.PooledDataBuffer;
import org.springframework.core.log.LogFormatUtils;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;
@@ -127,7 +126,7 @@ public final class StringDecoder extends AbstractDataBufferDecoder<String> {
return Mono.just(lastBuffer);
}))
.doOnTerminate(chunks::releaseAndClear)
.doOnDiscard(PooledDataBuffer.class, PooledDataBuffer::release)
.doOnDiscard(DataBuffer.class, DataBufferUtils::release)
.map(buffer -> decode(buffer, elementType, mimeType, hints));
}
@@ -153,26 +152,26 @@ public final class StringDecoder extends AbstractDataBufferDecoder<String> {
DataBufferUtils.retain(buffer); // retain after add (may raise DataBufferLimitException)
break;
}
int startIndex = buffer.readPosition();
int length = (endIndex - startIndex + 1);
DataBuffer slice = buffer.retainedSlice(startIndex, length);
result = (result != null ? result : new ArrayList<>());
DataBuffer split = buffer.split(endIndex + 1);
if (result == null) {
result = new ArrayList<>();
}
int delimiterLength = matcher.delimiter().length;
if (chunks.isEmpty()) {
if (this.stripDelimiter) {
slice.writePosition(slice.writePosition() - matcher.delimiter().length);
split.writePosition(split.writePosition() - delimiterLength);
}
result.add(slice);
result.add(split);
}
else {
chunks.add(slice);
chunks.add(split);
DataBuffer joined = buffer.factory().join(chunks);
if (this.stripDelimiter) {
joined.writePosition(joined.writePosition() - matcher.delimiter().length);
joined.writePosition(joined.writePosition() - delimiterLength);
}
result.add(joined);
chunks.clear();
}
buffer.readPosition(endIndex + 1);
}
while (buffer.readableByteCount() > 0);
return (result != null ? result : Collections.emptyList());
@@ -187,7 +186,7 @@ public final class StringDecoder extends AbstractDataBufferDecoder<String> {
@Nullable MimeType mimeType, @Nullable Map<String, Object> hints) {
Charset charset = getCharset(mimeType);
CharBuffer charBuffer = charset.decode(dataBuffer.asByteBuffer());
CharBuffer charBuffer = charset.decode(dataBuffer.toByteBuffer());
DataBufferUtils.release(dataBuffer);
String value = charBuffer.toString();
LogFormatUtils.traceDebug(logger, traceOn -> {

35
spring-core/src/main/java/org/springframework/core/io/buffer/CloseableDataBuffer.java Normal file
View File

@@ -0,0 +1,35 @@
/*
* Copyright 2002-2022 the original author or authors.
*
* 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
*
* https://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.springframework.core.io.buffer;
/**
* Extension of {@link DataBuffer} that allows for buffers that can be used
* in a {@code try}-with-resources statement.
* @author Arjen Poutsma
* @since 6.0
*/
public interface CloseableDataBuffer extends DataBuffer, AutoCloseable {
/**
* Closes this data buffer, freeing any resources.
* @throws IllegalStateException if this buffer has already been closed
*/
@Override
void close();
}

83
spring-core/src/main/java/org/springframework/core/io/buffer/DataBuffer.java
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@@ -1,5 +1,5 @@
/*
* Copyright 2002-2019 the original author or authors.
* Copyright 2002-2022 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -111,7 +111,10 @@ public interface DataBuffer {
* the current capacity, it will be expanded.
* @param capacity the new capacity
* @return this buffer
* @deprecated as of 6.0, in favor of {@link #ensureWritable(int)}, which
* has different semantics
*/
@Deprecated
DataBuffer capacity(int capacity);
/**
@@ -121,11 +124,23 @@ public interface DataBuffer {
* @param capacity the writable capacity to check for
* @return this buffer
* @since 5.1.4
* @deprecated since 6.0, in favor of {@link #ensureWritable(int)}
*/
@Deprecated
default DataBuffer ensureCapacity(int capacity) {
return this;
return ensureWritable(capacity);
}
/**
* Ensure that the current buffer has enough {@link #writableByteCount()}
* to write the amount of data given as an argument. If not, the missing
* capacity will be added to the buffer.
* @param capacity the writable capacity to check for
* @return this buffer
* @since 6.0
*/
DataBuffer ensureWritable(int capacity);
/**
* Return the position from which this buffer will read.
* @return the read position
@@ -286,7 +301,10 @@ public interface DataBuffer {
* @param index the index at which to start the slice
* @param length the length of the slice
* @return the specified slice of this data buffer
* @deprecated as of 6.0, in favor of {@link #split(int)}, which
* has different semantics
*/
@Deprecated
DataBuffer slice(int index, int length);
/**
@@ -301,18 +319,44 @@ public interface DataBuffer {
* @param length the length of the slice
* @return the specified, retained slice of this data buffer
* @since 5.2
* @deprecated as of 6.0, in favor of {@link #split(int)}, which
* has different semantics
*/
@Deprecated
default DataBuffer retainedSlice(int index, int length) {
return DataBufferUtils.retain(slice(index, length));
}
/**
* Splits this data buffer into two at the given index.
*
* <p>Data that precedes the {@code index} will be returned in a new buffer,
* while this buffer will contain data that follows after {@code index}.
* Memory between the two buffers is shared, but independent and cannot
* overlap (unlike {@link #slice(int, int) slice}).
*
* <p>The {@linkplain #readPosition() read} and
* {@linkplain #writePosition() write} position of the returned buffer are
* truncated to fit within the buffers {@linkplain #capacity() capacity} if
* necessary. The positions of this buffer are set to {@code 0} if they are
* smaller than {@code index}.
* @param index the index at which it should be split
* @return a new data buffer, containing the bytes from index {@code 0} to
* {@code index}
* @since 6.0
*/
DataBuffer split(int index);
/**
* Expose this buffer's bytes as a {@link ByteBuffer}. Data between this
* {@code DataBuffer} and the returned {@code ByteBuffer} is shared; though
* changes in the returned buffer's {@linkplain ByteBuffer#position() position}
* will not be reflected in the reading nor writing position of this data buffer.
* @return this data buffer as a byte buffer
* @deprecated as of 6.0, in favor of {@link #toByteBuffer()}, which does
* <strong>not</strong> share data and returns a copy.
*/
@Deprecated
ByteBuffer asByteBuffer();
/**
@@ -324,9 +368,32 @@ public interface DataBuffer {
* @param length the length of the returned byte buffer
* @return this data buffer as a byte buffer
* @since 5.0.1
* @deprecated as of 6.0, in favor of {@link #toByteBuffer(int, int)}, which
* does <strong>not</strong> share data and returns a copy.
*/
@Deprecated
ByteBuffer asByteBuffer(int index, int length);
/**
* Returns a {@link ByteBuffer} representation of this data buffer. Data
* between this {@code DataBuffer} and the returned {@code ByteBuffer} is
* <strong>not</strong> shared.
* @return this data buffer as a byte buffer
* @since 6.0
*/
default ByteBuffer toByteBuffer() {
return toByteBuffer(readPosition(), readableByteCount());
}
/**
* Returns a {@link ByteBuffer} representation of a subsequence of this
* buffer's bytes. Data between this {@code DataBuffer} and the returned
* {@code ByteBuffer} is <strong>not</strong> shared.
* @return this data buffer as a byte buffer
* @since 6.0
*/
ByteBuffer toByteBuffer(int index, int length);
/**
* Expose this buffer's data as an {@link InputStream}. Both data and read position are
* shared between the returned stream and this data buffer. The underlying buffer will
@@ -335,7 +402,9 @@ public interface DataBuffer {
* @return this data buffer as an input stream
* @see #asInputStream(boolean)
*/
InputStream asInputStream();
default InputStream asInputStream() {
return new DataBufferInputStream(this, false);
}
/**
* Expose this buffer's data as an {@link InputStream}. Both data and read position are
@@ -346,14 +415,18 @@ public interface DataBuffer {
* @return this data buffer as an input stream
* @since 5.0.4
*/
InputStream asInputStream(boolean releaseOnClose);
default InputStream asInputStream(boolean releaseOnClose) {
return new DataBufferInputStream(this, releaseOnClose);
};
/**
* Expose this buffer's data as an {@link OutputStream}. Both data and write position are
* shared between the returned stream and this data buffer.
* @return this data buffer as an output stream
*/
OutputStream asOutputStream();
default OutputStream asOutputStream() {
return new DataBufferOutputStream(this);
}
/**
* Return this buffer's data a String using the specified charset. Default implementation

14
spring-core/src/main/java/org/springframework/core/io/buffer/DataBufferFactory.java
View File

@@ -1,5 +1,5 @@
/*
* Copyright 2002-2018 the original author or authors.
* Copyright 2002-2022 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -34,7 +34,9 @@ public interface DataBufferFactory {
* underlying implementation and its configuration, this will be heap-based
* or direct buffer.
* @return the allocated buffer
* @deprecated as of 6.0, in favor of {@link #allocateBuffer(int)}
*/
@Deprecated
DataBuffer allocateBuffer();
/**
@@ -75,4 +77,14 @@ public interface DataBufferFactory {
*/
DataBuffer join(List<? extends DataBuffer> dataBuffers);
/**
* Indicates whether this factory allocates direct buffers (i.e. non-heap,
* native memory).
* @return {@code true} if this factory allocates direct buffers;
* {@code false} otherwise
* @since 6.0
*/
boolean isDirect();
}

111
spring-core/src/main/java/org/springframework/core/io/buffer/DataBufferInputStream.java Normal file
View File

@@ -0,0 +1,111 @@
/*
* Copyright 2002-2022 the original author or authors.
*
* 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
*
* https://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.springframework.core.io.buffer;
import java.io.IOException;
import java.io.InputStream;
import org.springframework.util.Assert;
/**
* An {@link InputStream} that reads from a {@link DataBuffer}.
*
* @author Arjen Poutsma
* @since 6.0
* @see DataBuffer#asInputStream(boolean)
*/
final class DataBufferInputStream extends InputStream {
private final DataBuffer dataBuffer;
private final int end;
private final boolean releaseOnClose;
private boolean closed;
private int mark;
public DataBufferInputStream(DataBuffer dataBuffer, boolean releaseOnClose) {
Assert.notNull(dataBuffer, "DataBuffer must not be null");
this.dataBuffer = dataBuffer;
int start = this.dataBuffer.readPosition();
this.end = start + this.dataBuffer.readableByteCount();
this.mark = start;
this.releaseOnClose = releaseOnClose;
}
@Override
public int read() throws IOException {
checkClosed();
if (available() == 0) {
return -1;
}
return this.dataBuffer.read() & 0xFF;
}
@Override
public int read(byte[] b, int off, int len) throws IOException {
checkClosed();
int available = available();
if (available == 0) {
return -1;
}
len = Math.min(available, len);
this.dataBuffer.read(b, off, len);
return len;
}
@Override
public boolean markSupported() {
return true;
}
@Override
public void mark(int mark) {
this.mark = mark;
}
@Override
public int available() {
return Math.max(0, this.end - this.dataBuffer.readPosition());
}
@Override
public void reset() {
this.dataBuffer.readPosition(this.mark);
}
@Override
public void close() {
if (this.closed) {
return;
}
if (this.releaseOnClose) {
DataBufferUtils.release(this.dataBuffer);
}
this.closed = true;
}
private void checkClosed() throws IOException {
if (this.closed) {
throw new IOException("DataBufferInputStream is closed");
}
}
}

73
spring-core/src/main/java/org/springframework/core/io/buffer/DataBufferOutputStream.java Normal file
View File

@@ -0,0 +1,73 @@
/*
* Copyright 2002-2022 the original author or authors.
*
* 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
*
* https://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.springframework.core.io.buffer;
import java.io.IOException;
import java.io.OutputStream;
import org.springframework.util.Assert;
/**
* An {@link OutputStream} that writes to a {@link DataBuffer}.
*
* @author Arjen Poutsma
* @since 6.0
* @see DataBuffer#asOutputStream()
*/
final class DataBufferOutputStream extends OutputStream {
private final DataBuffer dataBuffer;
private boolean closed;
public DataBufferOutputStream(DataBuffer dataBuffer) {
Assert.notNull(dataBuffer, "DataBuffer must not be null");
this.dataBuffer = dataBuffer;
}
@Override
public void write(int b) throws IOException {
checkClosed();
this.dataBuffer.ensureWritable(1);
this.dataBuffer.write((byte) b);
}
@Override
public void write(byte[] b, int off, int len) throws IOException {
checkClosed();
if (len > 0) {
this.dataBuffer.ensureWritable(len);
this.dataBuffer.write(b, off, len);
}
}
@Override
public void close() {
if (this.closed) {
return;
}
this.closed = true;
}
private void checkClosed() throws IOException {
if (this.closed) {
throw new IOException("DataBufferOutputStream is closed");
}
}
}

89
spring-core/src/main/java/org/springframework/core/io/buffer/DataBufferUtils.java
View File

@@ -156,7 +156,7 @@ public abstract class DataBufferUtils {
// and then complete after releasing the DataBuffer.
});
return flux.doOnDiscard(PooledDataBuffer.class, DataBufferUtils::release);
return flux.doOnDiscard(DataBuffer.class, DataBufferUtils::release);
}
/**
@@ -417,7 +417,8 @@ public abstract class DataBufferUtils {
* @param maxByteCount the maximum byte count
* @return a flux whose maximum byte count is {@code maxByteCount}
*/
public static Flux<DataBuffer> takeUntilByteCount(Publisher<? extends DataBuffer> publisher, long maxByteCount) {
@SuppressWarnings("unchecked")
public static <T extends DataBuffer> Flux<T> takeUntilByteCount(Publisher<T> publisher, long maxByteCount) {
Assert.notNull(publisher, "Publisher must not be null");
Assert.isTrue(maxByteCount >= 0, "'maxByteCount' must be a positive number");
@@ -427,8 +428,10 @@ public abstract class DataBufferUtils {
.map(buffer -> {
long remainder = countDown.addAndGet(-buffer.readableByteCount());
if (remainder < 0) {
int length = buffer.readableByteCount() + (int) remainder;
return buffer.slice(0, length);
int index = buffer.readableByteCount() + (int) remainder;
DataBuffer split = buffer.split(index);
release(buffer);
return (T)split;
}
else {
return buffer;
@@ -448,7 +451,7 @@ public abstract class DataBufferUtils {
* @param maxByteCount the maximum byte count
* @return a flux with the remaining part of the given publisher
*/
public static Flux<DataBuffer> skipUntilByteCount(Publisher<? extends DataBuffer> publisher, long maxByteCount) {
public static <T extends DataBuffer> Flux<T> skipUntilByteCount(Publisher<T> publisher, long maxByteCount) {
Assert.notNull(publisher, "Publisher must not be null");
Assert.isTrue(maxByteCount >= 0, "'maxByteCount' must be a positive number");
@@ -464,14 +467,15 @@ public abstract class DataBufferUtils {
if (remainder < 0) {
countDown.set(0);
int start = buffer.readableByteCount() + (int)remainder;
int length = (int) -remainder;
return buffer.slice(start, length);
DataBuffer split = buffer.split(start);
release(split);
return buffer;
}
else {
return buffer;
}
});
}).doOnDiscard(PooledDataBuffer.class, DataBufferUtils::release);
}).doOnDiscard(DataBuffer.class, DataBufferUtils::release);
}
/**
@@ -499,8 +503,8 @@ public abstract class DataBufferUtils {
*/
@SuppressWarnings("unchecked")
public static <T extends DataBuffer> T touch(T dataBuffer, Object hint) {
if (dataBuffer instanceof PooledDataBuffer pooledDataBuffer) {
return (T) pooledDataBuffer.touch(hint);
if (dataBuffer instanceof TouchableDataBuffer touchableDataBuffer) {
return (T) touchableDataBuffer.touch(hint);
}
else {
return dataBuffer;
@@ -508,8 +512,11 @@ public abstract class DataBufferUtils {
}
/**
* Release the given data buffer, if it is a {@link PooledDataBuffer} and
* has been {@linkplain PooledDataBuffer#isAllocated() allocated}.
* Release the given data buffer. If it is a {@link PooledDataBuffer} and
* has been {@linkplain PooledDataBuffer#isAllocated() allocated}, this
* method will call {@link PooledDataBuffer#release()}. If it is a
* {@link CloseableDataBuffer}, this method will call
* {@link CloseableDataBuffer#close()}.
* @param dataBuffer the data buffer to release
* @return {@code true} if the buffer was released; {@code false} otherwise.
*/
@@ -520,7 +527,6 @@ public abstract class DataBufferUtils {
return pooledDataBuffer.release();
}
catch (IllegalStateException ex) {
// Avoid dependency on Netty: IllegalReferenceCountException
if (logger.isDebugEnabled()) {
logger.debug("Failed to release PooledDataBuffer: " + dataBuffer, ex);
}
@@ -528,6 +534,19 @@ public abstract class DataBufferUtils {
}
}
}
else if (dataBuffer instanceof CloseableDataBuffer closeableDataBuffer) {
try {
closeableDataBuffer.close();
return true;
}
catch (IllegalStateException ex) {
if (logger.isDebugEnabled()) {
logger.debug("Failed to release CloseableDataBuffer " + dataBuffer, ex);
}
return false;
}
}
return false;
}
@@ -581,7 +600,7 @@ public abstract class DataBufferUtils {
.collect(() -> new LimitedDataBufferList(maxByteCount), LimitedDataBufferList::add)
.filter(list -> !list.isEmpty())
.map(list -> list.get(0).factory().join(list))
.doOnDiscard(PooledDataBuffer.class, DataBufferUtils::release);
.doOnDiscard(DataBuffer.class, DataBufferUtils::release);
}
/**
@@ -887,14 +906,13 @@ public abstract class DataBufferUtils {
@Override
public void accept(SynchronousSink<DataBuffer> sink) {
boolean release = true;
DataBuffer dataBuffer = this.dataBufferFactory.allocateBuffer(this.bufferSize);
ByteBuffer byteBuffer = this.dataBufferFactory.isDirect() ?
ByteBuffer.allocateDirect(this.bufferSize) :
ByteBuffer.allocate(this.bufferSize);
try {
int read;
ByteBuffer byteBuffer = dataBuffer.asByteBuffer(0, dataBuffer.capacity());
if ((read = this.channel.read(byteBuffer)) >= 0) {
dataBuffer.writePosition(read);
release = false;
if (this.channel.read(byteBuffer) >= 0) {
byteBuffer.flip();
DataBuffer dataBuffer = this.dataBufferFactory.wrap(byteBuffer);
sink.next(dataBuffer);
}
else {
@@ -904,16 +922,11 @@ public abstract class DataBufferUtils {
catch (IOException ex) {
sink.error(ex);
}
finally {
if (release) {
release(dataBuffer);
}
}
}
}
private static class ReadCompletionHandler implements CompletionHandler<Integer, DataBuffer> {
private static class ReadCompletionHandler implements CompletionHandler<Integer, ByteBuffer> {
private final AsynchronousFileChannel channel;
@@ -965,21 +978,20 @@ public abstract class DataBufferUtils {
}
private void read() {
DataBuffer dataBuffer = this.dataBufferFactory.allocateBuffer(this.bufferSize);
ByteBuffer byteBuffer = dataBuffer.asByteBuffer(0, this.bufferSize);
this.channel.read(byteBuffer, this.position.get(), dataBuffer, this);
ByteBuffer byteBuffer = this.dataBufferFactory.isDirect() ?
ByteBuffer.allocateDirect(this.bufferSize) :
ByteBuffer.allocate(this.bufferSize);
this.channel.read(byteBuffer, this.position.get(), byteBuffer, this);
}
@Override
public void completed(Integer read, DataBuffer dataBuffer) {
public void completed(Integer read, ByteBuffer byteBuffer) {
if (this.state.get().equals(State.DISPOSED)) {
release(dataBuffer);
closeChannel(this.channel);
return;
}
if (read == -1) {
release(dataBuffer);
closeChannel(this.channel);
this.state.set(State.DISPOSED);
this.sink.complete();
@@ -987,7 +999,9 @@ public abstract class DataBufferUtils {
}
this.position.addAndGet(read);
dataBuffer.writePosition(read);
byteBuffer.flip();
DataBuffer dataBuffer = this.dataBufferFactory.wrap(byteBuffer);
this.sink.next(dataBuffer);
// Stay in READING mode if there is demand
@@ -1003,8 +1017,7 @@ public abstract class DataBufferUtils {
}
@Override
public void failed(Throwable exc, DataBuffer dataBuffer) {
release(dataBuffer);
public void failed(Throwable exc, ByteBuffer byteBuffer) {
closeChannel(this.channel);
this.state.set(State.DISPOSED);
this.sink.error(exc);
@@ -1035,7 +1048,7 @@ public abstract class DataBufferUtils {
@Override
protected void hookOnNext(DataBuffer dataBuffer) {
try {
ByteBuffer byteBuffer = dataBuffer.asByteBuffer();
ByteBuffer byteBuffer = dataBuffer.toByteBuffer();
while (byteBuffer.hasRemaining()) {
this.channel.write(byteBuffer);
}
@@ -1099,7 +1112,7 @@ public abstract class DataBufferUtils {
if (!this.dataBuffer.compareAndSet(null, value)) {
throw new IllegalStateException();
}
ByteBuffer byteBuffer = value.asByteBuffer();
ByteBuffer byteBuffer = value.toByteBuffer();
this.channel.write(byteBuffer, this.position.get(), byteBuffer, this);
}

28
spring-core/src/main/java/org/springframework/core/io/buffer/DataBufferWrapper.java
View File

@@ -1,5 +1,5 @@
/*
* Copyright 2002-2019 the original author or authors.
* Copyright 2002-2022 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -85,15 +85,22 @@ public class DataBufferWrapper implements DataBuffer {
}
@Override
@Deprecated
public DataBuffer capacity(int capacity) {
return this.delegate.capacity(capacity);
}
@Override
@Deprecated
public DataBuffer ensureCapacity(int capacity) {
return this.delegate.ensureCapacity(capacity);
}
@Override
public DataBuffer ensureWritable(int capacity) {
return this.delegate.ensureWritable(capacity);
}
@Override
public int readPosition() {
return this.delegate.readPosition();
@@ -166,25 +173,44 @@ public class DataBufferWrapper implements DataBuffer {
}
@Override
@Deprecated
public DataBuffer slice(int index, int length) {
return this.delegate.slice(index, length);
}
@Override
@Deprecated
public DataBuffer retainedSlice(int index, int length) {
return this.delegate.retainedSlice(index, length);
}
@Override
public DataBuffer split(int index) {
return this.delegate.split(index);
}
@Override
@Deprecated
public ByteBuffer asByteBuffer() {
return this.delegate.asByteBuffer();
}
@Override
@Deprecated
public ByteBuffer asByteBuffer(int index, int length) {
return this.delegate.asByteBuffer(index, length);
}
@Override
public ByteBuffer toByteBuffer() {
return this.delegate.toByteBuffer();
}
@Override
public ByteBuffer toByteBuffer(int index, int length) {
return this.delegate.toByteBuffer(index, length);
}
@Override
public InputStream asInputStream() {
return this.delegate.asInputStream();

127
spring-core/src/main/java/org/springframework/core/io/buffer/DefaultDataBuffer.java
View File

@@ -1,5 +1,5 @@
/*
* Copyright 2002-2021 the original author or authors.
* Copyright 2002-2022 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -16,9 +16,6 @@
package org.springframework.core.io.buffer;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.ByteBuffer;
import java.nio.charset.Charset;
import java.util.Arrays;
@@ -179,9 +176,15 @@ public class DefaultDataBuffer implements DataBuffer {
}
@Override
public DefaultDataBuffer capacity(int newCapacity) {
if (newCapacity <= 0) {
throw new IllegalArgumentException(String.format("'newCapacity' %d must be higher than 0", newCapacity));
@Deprecated
public DataBuffer capacity(int capacity) {
setCapacity(capacity);
return this;
}
private void setCapacity(int newCapacity) {
if (newCapacity < 0) {
throw new IllegalArgumentException(String.format("'newCapacity' %d must be 0 or higher", newCapacity));
}
int readPosition = readPosition();
int writePosition = writePosition();
@@ -215,14 +218,13 @@ public class DefaultDataBuffer implements DataBuffer {
}
setNativeBuffer(newBuffer);
}
return this;
}
@Override
public DataBuffer ensureCapacity(int length) {
public DataBuffer ensureWritable(int length) {
if (length > writableByteCount()) {
int newCapacity = calculateCapacity(this.writePosition + length);
capacity(newCapacity);
setCapacity(newCapacity);
}
return this;
}
@@ -273,7 +275,7 @@ public class DefaultDataBuffer implements DataBuffer {
@Override
public DefaultDataBuffer write(byte b) {
ensureCapacity(1);
ensureWritable(1);
int pos = this.writePosition;
this.byteBuffer.put(pos, b);
this.writePosition = pos + 1;
@@ -290,7 +292,7 @@ public class DefaultDataBuffer implements DataBuffer {
@Override
public DefaultDataBuffer write(byte[] source, int offset, int length) {
Assert.notNull(source, "Byte array must not be null");
ensureCapacity(length);
ensureWritable(length);
ByteBuffer tmp = this.byteBuffer.duplicate();
int limit = this.writePosition + length;
@@ -304,7 +306,7 @@ public class DefaultDataBuffer implements DataBuffer {
@Override
public DefaultDataBuffer write(DataBuffer... buffers) {
if (!ObjectUtils.isEmpty(buffers)) {
write(Arrays.stream(buffers).map(DataBuffer::asByteBuffer).toArray(ByteBuffer[]::new));
write(Arrays.stream(buffers).map(DataBuffer::toByteBuffer).toArray(ByteBuffer[]::new));
}
return this;
}
@@ -313,7 +315,7 @@ public class DefaultDataBuffer implements DataBuffer {
public DefaultDataBuffer write(ByteBuffer... buffers) {
if (!ObjectUtils.isEmpty(buffers)) {
int capacity = Arrays.stream(buffers).mapToInt(ByteBuffer::remaining).sum();
ensureCapacity(capacity);
ensureWritable(capacity);
Arrays.stream(buffers).forEach(this::write);
}
return this;
@@ -329,6 +331,7 @@ public class DefaultDataBuffer implements DataBuffer {
}
@Override
@Deprecated
public DefaultDataBuffer slice(int index, int length) {
checkIndex(index, length);
int oldPosition = this.byteBuffer.position();
@@ -344,11 +347,37 @@ public class DefaultDataBuffer implements DataBuffer {
}
@Override
public DataBuffer split(int index) {
checkIndex(index);
ByteBuffer split = this.byteBuffer.duplicate().clear()
.position(0)
.limit(index)
.slice();
DefaultDataBuffer result = new DefaultDataBuffer(this.dataBufferFactory, split);
result.writePosition = Math.min(this.writePosition, index);
result.readPosition = Math.min(this.readPosition, index);
this.byteBuffer = this.byteBuffer.duplicate().clear()
.position(index)
.limit(this.byteBuffer.capacity())
.slice();
this.writePosition = Math.max(this.writePosition, index) - index;
this.readPosition = Math.max(this.readPosition, index) - index;
capacity(this.byteBuffer.capacity());
return result;
}
@Override
@Deprecated
public ByteBuffer asByteBuffer() {
return asByteBuffer(this.readPosition, readableByteCount());
}
@Override
@Deprecated
public ByteBuffer asByteBuffer(int index, int length) {
checkIndex(index, length);
@@ -359,21 +388,16 @@ public class DefaultDataBuffer implements DataBuffer {
}
@Override
public InputStream asInputStream() {
return new DefaultDataBufferInputStream();
}
public ByteBuffer toByteBuffer(int index, int length) {
checkIndex(index, length);
@Override
public InputStream asInputStream(boolean releaseOnClose) {
return new DefaultDataBufferInputStream();
ByteBuffer copy = allocate(length, this.byteBuffer.isDirect());
ByteBuffer readOnly = this.byteBuffer.asReadOnlyBuffer();
readOnly.clear().position(index).limit(index + length);
copy.put(readOnly);
return copy.flip();
}
@Override
public OutputStream asOutputStream() {
return new DefaultDataBufferOutputStream();
}
@Override
public String toString(int index, int length, Charset charset) {
checkIndex(index, length);
@@ -452,9 +476,17 @@ public class DefaultDataBuffer implements DataBuffer {
private void checkIndex(int index, int length) {
checkIndex(index);
checkLength(length);
}
private void checkIndex(int index) {
assertIndex(index >= 0, "index %d must be >= 0", index);
assertIndex(length >= 0, "length %d must be >= 0", length);
assertIndex(index <= this.capacity, "index %d must be <= %d", index, this.capacity);
}
private void checkLength(int length) {
assertIndex(length >= 0, "length %d must be >= 0", length);
assertIndex(length <= this.capacity, "length %d must be <= %d", length, this.capacity);
}
@@ -466,47 +498,6 @@ public class DefaultDataBuffer implements DataBuffer {
}
private class DefaultDataBufferInputStream extends InputStream {
@Override
public int available() {
return readableByteCount();
}
@Override
public int read() {
return available() > 0 ? DefaultDataBuffer.this.read() & 0xFF : -1;
}
@Override
public int read(byte[] bytes, int off, int len) throws IOException {
int available = available();
if (available > 0) {
len = Math.min(len, available);
DefaultDataBuffer.this.read(bytes, off, len);
return len;
}
else {
return -1;
}
}
}
private class DefaultDataBufferOutputStream extends OutputStream {
@Override
public void write(int b) throws IOException {
DefaultDataBuffer.this.write((byte) b);
}
@Override
public void write(byte[] bytes, int off, int len) throws IOException {
DefaultDataBuffer.this.write(bytes, off, len);
}
}
private static class SlicedDefaultDataBuffer extends DefaultDataBuffer {
SlicedDefaultDataBuffer(ByteBuffer byteBuffer, DefaultDataBufferFactory dataBufferFactory, int length) {

7
spring-core/src/main/java/org/springframework/core/io/buffer/DefaultDataBufferFactory.java
View File

@@ -1,5 +1,5 @@
/*
* Copyright 2002-2020 the original author or authors.
* Copyright 2002-2022 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -85,6 +85,7 @@ public class DefaultDataBufferFactory implements DataBufferFactory {
@Override
@Deprecated
public DefaultDataBuffer allocateBuffer() {
return allocateBuffer(this.defaultInitialCapacity);
}
@@ -122,6 +123,10 @@ public class DefaultDataBufferFactory implements DataBufferFactory {
return result;
}
@Override
public boolean isDirect() {
return this.preferDirect;
}
@Override
public String toString() {

346
spring-core/src/main/java/org/springframework/core/io/buffer/Netty5DataBuffer.java Normal file
View File

@@ -0,0 +1,346 @@
/*
* Copyright 2002-2022 the original author or authors.
*
* 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
*
* https://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.springframework.core.io.buffer;
import java.nio.ByteBuffer;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.util.function.IntPredicate;
import io.netty5.buffer.api.Buffer;
import io.netty5.util.AsciiString;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;
import org.springframework.util.ObjectUtils;
/**
* Implementation of the {@code DataBuffer} interface that wraps a Netty 5
* {@link Buffer}. Typically constructed with {@link Netty5DataBufferFactory}.
*
* @author Violeta Georgieva
* @author Arjen Poutsma
* @since 6.0
*/
public final class Netty5DataBuffer implements CloseableDataBuffer,
TouchableDataBuffer {
private final Buffer buffer;
private final Netty5DataBufferFactory dataBufferFactory;
/**
* Create a new {@code Netty5DataBuffer} based on the given {@code Buffer}.
* @param buffer the buffer to base this buffer on
*/
Netty5DataBuffer(Buffer buffer, Netty5DataBufferFactory dataBufferFactory) {
Assert.notNull(buffer, "Buffer must not be null");
Assert.notNull(dataBufferFactory, "NettyDataBufferFactory must not be null");
this.buffer = buffer;
this.dataBufferFactory = dataBufferFactory;
}
/**
* Directly exposes the native {@code Buffer} that this buffer is based on.
* @return the wrapped buffer
*/
public Buffer getNativeBuffer() {
return this.buffer;
}
@Override
public DataBufferFactory factory() {
return this.dataBufferFactory;
}
@Override
public int indexOf(IntPredicate predicate, int fromIndex) {
Assert.notNull(predicate, "IntPredicate must not be null");
if (fromIndex < 0) {
fromIndex = 0;
}
else if (fromIndex >= this.buffer.writerOffset()) {
return -1;
}
int length = this.buffer.writerOffset() - fromIndex;
int bytes = this.buffer.openCursor(fromIndex, length).process(predicate.negate()::test);
return bytes == -1 ? -1 : fromIndex + bytes;
}
@Override
public int lastIndexOf(IntPredicate predicate, int fromIndex) {
Assert.notNull(predicate, "IntPredicate must not be null");
if (fromIndex < 0) {
return -1;
}
fromIndex = Math.min(fromIndex, this.buffer.writerOffset() - 1);
return this.buffer.openCursor(0, fromIndex + 1).process(predicate.negate()::test);
}
@Override
public int readableByteCount() {
return this.buffer.readableBytes();
}
@Override
public int writableByteCount() {
return this.buffer.writableBytes();
}
@Override
public int readPosition() {
return this.buffer.readerOffset();
}
@Override
public Netty5DataBuffer readPosition(int readPosition) {
this.buffer.readerOffset(readPosition);
return this;
}
@Override
public int writePosition() {
return this.buffer.writerOffset();
}
@Override
public Netty5DataBuffer writePosition(int writePosition) {
this.buffer.writerOffset(writePosition);
return this;
}
@Override
public byte getByte(int index) {
return this.buffer.getByte(index);
}
@Override
public int capacity() {
return this.buffer.capacity();
}
@Override
@Deprecated
public Netty5DataBuffer capacity(int capacity) {
if (capacity <= 0) {
throw new IllegalArgumentException(String.format("'newCapacity' %d must be higher than 0", capacity));
}
int diff = capacity - capacity();
if (diff > 0) {
this.buffer.ensureWritable(this.buffer.writableBytes() + diff);
}
return this;
}
@Override
public DataBuffer ensureWritable(int capacity) {
Assert.isTrue(capacity >= 0, "Capacity must be larger than 0");
this.buffer.ensureWritable(capacity);
return this;
}
@Override
public byte read() {
return this.buffer.readByte();
}
@Override
public Netty5DataBuffer read(byte[] destination) {
return read(destination, 0, destination.length);
}
@Override
public Netty5DataBuffer read(byte[] destination, int offset, int length) {
this.buffer.readBytes(destination, offset, length);
return this;
}
@Override
public Netty5DataBuffer write(byte b) {
this.buffer.writeByte(b);
return this;
}
@Override
public Netty5DataBuffer write(byte[] source) {
this.buffer.writeBytes(source);
return this;
}
@Override
public Netty5DataBuffer write(byte[] source, int offset, int length) {
this.buffer.writeBytes(source, offset, length);
return this;
}
@Override
public Netty5DataBuffer write(DataBuffer... buffers) {
if (!ObjectUtils.isEmpty(buffers)) {
if (hasNetty5DataBuffers(buffers)) {
Buffer[] nativeBuffers = new Buffer[buffers.length];
for (int i = 0; i < buffers.length; i++) {
nativeBuffers[i] = ((Netty5DataBuffer) buffers[i]).getNativeBuffer();
}
return write(nativeBuffers);
}
else {
ByteBuffer[] byteBuffers = new ByteBuffer[buffers.length];
for (int i = 0; i < buffers.length; i++) {
byteBuffers[i] = buffers[i].toByteBuffer();
}
return write(byteBuffers);
}
}
return this;
}
private static boolean hasNetty5DataBuffers(DataBuffer[] buffers) {
for (DataBuffer buffer : buffers) {
if (!(buffer instanceof Netty5DataBuffer)) {
return false;
}
}
return true;
}
@Override
public Netty5DataBuffer write(ByteBuffer... buffers) {
if (!ObjectUtils.isEmpty(buffers)) {
for (ByteBuffer buffer : buffers) {
this.buffer.writeBytes(buffer);
}
}
return this;
}
/**
* Writes one or more Netty 5 {@link Buffer Buffers} to this buffer,
* starting at the current writing position.
* @param buffers the buffers to write into this buffer
* @return this buffer
*/
public Netty5DataBuffer write(Buffer... buffers) {
if (!ObjectUtils.isEmpty(buffers)) {
for (Buffer buffer : buffers) {
this.buffer.writeBytes(buffer);
}
}
return this;
}
@Override
public DataBuffer write(CharSequence charSequence, Charset charset) {
Assert.notNull(charSequence, "CharSequence must not be null");
Assert.notNull(charset, "Charset must not be null");
if (StandardCharsets.US_ASCII.equals(charset) && charSequence instanceof AsciiString asciiString) {
this.buffer.writeBytes(asciiString.array(), asciiString.arrayOffset(), asciiString.length());
}
else {
byte[] bytes = charSequence.toString().getBytes(charset);
this.buffer.writeBytes(bytes);
}
return this;
}
/**
* {@inheritDoc}
* <p><strong>Note</strong> that due to the lack of a {@code slice} method
* in Netty 5's {@link Buffer}, this implementation returns a copy that
* does <strong>not</strong> share its contents with this buffer.
*/
@Override
@Deprecated
public DataBuffer slice(int index, int length) {
Buffer copy = this.buffer.copy(index, length);
return new Netty5DataBuffer(copy, this.dataBufferFactory);
}
@Override
public DataBuffer split(int index) {
Buffer split = this.buffer.split(index);
return new Netty5DataBuffer(split, this.dataBufferFactory);
}
@Override
@Deprecated
public ByteBuffer asByteBuffer() {
return toByteBuffer();
}
@Override
@Deprecated
public ByteBuffer asByteBuffer(int index, int length) {
return toByteBuffer(index, length);
}
@Override
@Deprecated
public ByteBuffer toByteBuffer(int index, int length) {
ByteBuffer copy = this.buffer.isDirect() ?
ByteBuffer.allocateDirect(length) :
ByteBuffer.allocate(length);
this.buffer.copyInto(index, copy, 0, length);
return copy;
}
@Override
public String toString(Charset charset) {
Assert.notNull(charset, "Charset must not be null");
return this.buffer.toString(charset);
}
@Override
public String toString(int index, int length, Charset charset) {
Assert.notNull(charset, "Charset must not be null");
byte[] data = new byte[length];
this.buffer.copyInto(index, data, 0, length);
return new String(data, 0, length, charset);
}
@Override
public Netty5DataBuffer touch(Object hint) {
this.buffer.touch(hint);
return this;
}
@Override
public void close() {
this.buffer.close();
}
public boolean equals(@Nullable Object other) {
return (this == other || (other instanceof Netty5DataBuffer dataBuffer &&
this.buffer.equals(dataBuffer.buffer)));
}
@Override
public int hashCode() {
return this.buffer.hashCode();
}
@Override
public String toString() {
return this.buffer.toString();
}
}

139
spring-core/src/main/java/org/springframework/core/io/buffer/Netty5DataBufferFactory.java Normal file
View File

@@ -0,0 +1,139 @@
/*
* Copyright 2002-2022 the original author or authors.
*
* 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
*
* https://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.springframework.core.io.buffer;
import java.nio.ByteBuffer;
import java.util.List;
import io.netty5.buffer.api.Buffer;
import io.netty5.buffer.api.BufferAllocator;
import io.netty5.buffer.api.CompositeBuffer;
import io.netty5.buffer.api.DefaultBufferAllocators;
import org.springframework.util.Assert;
/**
* Implementation of the {@code DataBufferFactory} interface based on a
* Netty 5 {@link BufferAllocator}.
*
* @author Violeta Georgieva
* @author Arjen Poutsma
* @since 6.0
*/
public class Netty5DataBufferFactory implements DataBufferFactory {
private final BufferAllocator bufferAllocator;
/**
* Create a new {@code Netty5DataBufferFactory} based on the given factory.
* @param bufferAllocator the factory to use
*/
public Netty5DataBufferFactory(BufferAllocator bufferAllocator) {
Assert.notNull(bufferAllocator, "BufferAllocator must not be null");
this.bufferAllocator = bufferAllocator;
}
/**
* Return the {@code BufferAllocator} used by this factory.
*/
public BufferAllocator getBufferAllocator() {
return this.bufferAllocator;
}
@Override
@Deprecated
public Netty5DataBuffer allocateBuffer() {
Buffer buffer = this.bufferAllocator.allocate(256);
return new Netty5DataBuffer(buffer, this);
}
@Override
public Netty5DataBuffer allocateBuffer(int initialCapacity) {
Buffer buffer = this.bufferAllocator.allocate(initialCapacity);
return new Netty5DataBuffer(buffer, this);
}
@Override
public Netty5DataBuffer wrap(ByteBuffer byteBuffer) {
Buffer buffer = this.bufferAllocator.copyOf(byteBuffer);
return new Netty5DataBuffer(buffer, this);
}
@Override
public Netty5DataBuffer wrap(byte[] bytes) {
Buffer buffer = this.bufferAllocator.copyOf(bytes);
return new Netty5DataBuffer(buffer, this);
}
/**
* Wrap the given Netty {@link Buffer} in a {@code Netty5DataBuffer}.
* @param buffer the Netty buffer to wrap
* @return the wrapped buffer
*/
public Netty5DataBuffer wrap(Buffer buffer) {
buffer.touch("Wrap buffer");
return new Netty5DataBuffer(buffer, this);
}
/**
* {@inheritDoc}
* <p>This implementation uses Netty's {@link CompositeBuffer}.
*/
@Override
public DataBuffer join(List<? extends DataBuffer> dataBuffers) {
Assert.notEmpty(dataBuffers, "DataBuffer List must not be empty");
if (dataBuffers.size() == 1) {
return dataBuffers.get(0);
}
CompositeBuffer composite = this.bufferAllocator.compose();
for (DataBuffer dataBuffer : dataBuffers) {
Assert.isInstanceOf(Netty5DataBuffer.class, dataBuffer);
composite.extendWith(((Netty5DataBuffer) dataBuffer).getNativeBuffer().send());
}
return new Netty5DataBuffer(composite, this);
}
@Override
public boolean isDirect() {
return this.bufferAllocator.getAllocationType().isDirect();
}
/**
* Return the given Netty {@link DataBuffer} as a {@link Buffer}.
* <p>Returns the {@linkplain Netty5DataBuffer#getNativeBuffer() native buffer}
* if {@code buffer} is a {@link Netty5DataBuffer}; returns
* {@link BufferAllocator#copyOf(ByteBuffer)} otherwise.
* @param buffer the {@code DataBuffer} to return a {@code Buffer} for
* @return the netty {@code Buffer}
*/
public static Buffer toBuffer(DataBuffer buffer) {
if (buffer instanceof Netty5DataBuffer netty5DataBuffer) {
return netty5DataBuffer.getNativeBuffer();
}
else {
return DefaultBufferAllocators.preferredAllocator().copyOf(buffer.toByteBuffer());
}
}
@Override
public String toString() {
return "Netty5DataBufferFactory (" + this.bufferAllocator + ")";
}
}

52
spring-core/src/main/java/org/springframework/core/io/buffer/NettyDataBuffer.java
View File

@@ -1,5 +1,5 @@
/*
* Copyright 2002-2019 the original author or authors.
* Copyright 2002-2022 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -16,16 +16,12 @@
package org.springframework.core.io.buffer;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.ByteBuffer;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.util.function.IntPredicate;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufInputStream;
import io.netty.buffer.ByteBufOutputStream;
import io.netty.buffer.ByteBufUtil;
import org.springframework.lang.Nullable;
@@ -33,7 +29,7 @@ import org.springframework.util.Assert;
import org.springframework.util.ObjectUtils;
/**
* Implementation of the {@code DataBuffer} interface that wraps a Netty
* Implementation of the {@code DataBuffer} interface that wraps a Netty 4
* {@link ByteBuf}. Typically constructed with {@link NettyDataBufferFactory}.
*
* @author Arjen Poutsma
@@ -42,7 +38,7 @@ import org.springframework.util.ObjectUtils;
*/
public class NettyDataBuffer implements PooledDataBuffer {
private final ByteBuf byteBuf;
private ByteBuf byteBuf;
private final NettyDataBufferFactory dataBufferFactory;
@@ -138,13 +134,14 @@ public class NettyDataBuffer implements PooledDataBuffer {
}
@Override
@Deprecated
public NettyDataBuffer capacity(int capacity) {
this.byteBuf.capacity(capacity);
return this;
}
@Override
public DataBuffer ensureCapacity(int capacity) {
public DataBuffer ensureWritable(int capacity) {
this.byteBuf.ensureWritable(capacity);
return this;
}
@@ -197,8 +194,7 @@ public class NettyDataBuffer implements PooledDataBuffer {
else {
ByteBuffer[] byteBuffers = new ByteBuffer[buffers.length];
for (int i = 0; i < buffers.length; i++) {
byteBuffers[i] = buffers[i].asByteBuffer();
byteBuffers[i] = buffers[i].toByteBuffer();
}
write(byteBuffers);
}
@@ -257,40 +253,56 @@ public class NettyDataBuffer implements PooledDataBuffer {
}
@Override
@Deprecated
public NettyDataBuffer slice(int index, int length) {
ByteBuf slice = this.byteBuf.slice(index, length);
return new NettyDataBuffer(slice, this.dataBufferFactory);
}
@Override
@Deprecated
public NettyDataBuffer retainedSlice(int index, int length) {
ByteBuf slice = this.byteBuf.retainedSlice(index, length);
return new NettyDataBuffer(slice, this.dataBufferFactory);
}
@Override
public NettyDataBuffer split(int index) {
ByteBuf split = this.byteBuf.retainedSlice(0, index);
int writerIndex = this.byteBuf.writerIndex();
int readerIndex = this.byteBuf.readerIndex();
split.writerIndex(Math.min(writerIndex, index));
split.readerIndex(Math.min(readerIndex, index));
this.byteBuf = this.byteBuf.slice(index, this.byteBuf.capacity() - index);
this.byteBuf.writerIndex(Math.max(writerIndex, index) - index);
this.byteBuf.readerIndex(Math.max(readerIndex, index) - index);
return new NettyDataBuffer(split, this.dataBufferFactory);
}
@Override
@Deprecated
public ByteBuffer asByteBuffer() {
return this.byteBuf.nioBuffer();
}
@Override
@Deprecated
public ByteBuffer asByteBuffer(int index, int length) {
return this.byteBuf.nioBuffer(index, length);
}
@Override
public InputStream asInputStream() {
return new ByteBufInputStream(this.byteBuf);
}
public ByteBuffer toByteBuffer(int index, int length) {
ByteBuffer result = this.byteBuf.isDirect() ?
ByteBuffer.allocateDirect(length) :
ByteBuffer.allocate(length);
@Override
public InputStream asInputStream(boolean releaseOnClose) {
return new ByteBufInputStream(this.byteBuf, releaseOnClose);
}
this.byteBuf.getBytes(index, result);
@Override
public OutputStream asOutputStream() {
return new ByteBufOutputStream(this.byteBuf);
return result.flip();
}
@Override

10
spring-core/src/main/java/org/springframework/core/io/buffer/NettyDataBufferFactory.java
View File

@@ -28,7 +28,7 @@ import org.springframework.util.Assert;
/**
* Implementation of the {@code DataBufferFactory} interface based on a
* Netty {@link ByteBufAllocator}.
* Netty 4 {@link ByteBufAllocator}.
*
* @author Arjen Poutsma
* @author Juergen Hoeller
@@ -61,6 +61,7 @@ public class NettyDataBufferFactory implements DataBufferFactory {
}
@Override
@Deprecated
public NettyDataBuffer allocateBuffer() {
ByteBuf byteBuf = this.byteBufAllocator.buffer();
return new NettyDataBuffer(byteBuf, this);
@@ -113,6 +114,11 @@ public class NettyDataBufferFactory implements DataBufferFactory {
return new NettyDataBuffer(composite, this);
}
@Override
public boolean isDirect() {
return this.byteBufAllocator.isDirectBufferPooled();
}
/**
* Return the given Netty {@link DataBuffer} as a {@link ByteBuf}.
* <p>Returns the {@linkplain NettyDataBuffer#getNativeBuffer() native buffer}
@@ -126,7 +132,7 @@ public class NettyDataBufferFactory implements DataBufferFactory {
return nettyDataBuffer.getNativeBuffer();
}
else {
return Unpooled.wrappedBuffer(buffer.asByteBuffer());
return Unpooled.wrappedBuffer(buffer.toByteBuffer());
}
}

7
spring-core/src/main/java/org/springframework/core/io/buffer/PooledDataBuffer.java
View File

@@ -1,5 +1,5 @@
/*
* Copyright 2002-2020 the original author or authors.
* Copyright 2002-2022 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -17,13 +17,13 @@
package org.springframework.core.io.buffer;
/**
* Extension of {@link DataBuffer} that allows for buffer that share
* Extension of {@link DataBuffer} that allows for buffers that share
* a memory pool. Introduces methods for reference counting.
*
* @author Arjen Poutsma
* @since 5.0
*/
public interface PooledDataBuffer extends DataBuffer {
public interface PooledDataBuffer extends TouchableDataBuffer {
/**
* Return {@code true} if this buffer is allocated;
@@ -43,6 +43,7 @@ public interface PooledDataBuffer extends DataBuffer {
* @return this buffer
* @since 5.3.2
*/
@Override
PooledDataBuffer touch(Object hint);
/**

34
spring-core/src/main/java/org/springframework/core/io/buffer/TouchableDataBuffer.java Normal file
View File

@@ -0,0 +1,34 @@
/*
* Copyright 2002-2022 the original author or authors.
*
* 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
*
* https://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.springframework.core.io.buffer;
/**
* Extension of {@link DataBuffer} that allows for buffers that can be given
* hints for debugging purposes.
*
* @author Arjen Poutsma
* @since 6.0
*/
public interface TouchableDataBuffer extends DataBuffer {
/**
* Associate the given hint with the data buffer for debugging purposes.
* @return this buffer
*/
TouchableDataBuffer touch(Object hint);
}

93
spring-core/src/test/java/org/springframework/core/codec/Netty5BufferDecoderTests.java Normal file
View File

@@ -0,0 +1,93 @@
/*
* Copyright 2002-2022 the original author or authors.
*
* 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
*
* https://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.springframework.core.codec;
import java.nio.charset.StandardCharsets;
import java.util.function.Consumer;
import io.netty5.buffer.api.Buffer;
import io.netty5.buffer.api.DefaultBufferAllocators;
import org.junit.jupiter.api.Test;
import reactor.core.publisher.Flux;
import org.springframework.core.ResolvableType;
import org.springframework.core.io.buffer.DataBuffer;
import org.springframework.core.testfixture.codec.AbstractDecoderTests;
import org.springframework.util.MimeTypeUtils;
import static org.assertj.core.api.Assertions.assertThat;
/**
* @author Arjen Poutsma
*/
class Netty5BufferDecoderTests extends AbstractDecoderTests<Netty5BufferDecoder> {
private final byte[] fooBytes = "foo".getBytes(StandardCharsets.UTF_8);
private final byte[] barBytes = "bar".getBytes(StandardCharsets.UTF_8);
Netty5BufferDecoderTests() {
super(new Netty5BufferDecoder());
}
@Override
@Test
public void canDecode() {
assertThat(this.decoder.canDecode(ResolvableType.forClass(Buffer.class),
MimeTypeUtils.TEXT_PLAIN)).isTrue();
assertThat(this.decoder.canDecode(ResolvableType.forClass(Integer.class),
MimeTypeUtils.TEXT_PLAIN)).isFalse();
assertThat(this.decoder.canDecode(ResolvableType.forClass(Buffer.class),
MimeTypeUtils.APPLICATION_JSON)).isTrue();
}
@Override
@Test
public void decode() {
Flux<DataBuffer> input = Flux.concat(
dataBuffer(this.fooBytes),
dataBuffer(this.barBytes));
testDecodeAll(input, Buffer.class, step -> step
.consumeNextWith(expectByteBuffer(DefaultBufferAllocators.preferredAllocator().copyOf(this.fooBytes)))
.consumeNextWith(expectByteBuffer(DefaultBufferAllocators.preferredAllocator().copyOf(this.barBytes)))
.verifyComplete());
}
@Override
@Test
public void decodeToMono() {
Flux<DataBuffer> input = Flux.concat(
dataBuffer(this.fooBytes),
dataBuffer(this.barBytes));
Buffer expected = DefaultBufferAllocators.preferredAllocator().allocate(this.fooBytes.length + this.barBytes.length)
.writeBytes(this.fooBytes)
.writeBytes(this.barBytes)
.readerOffset(0);
testDecodeToMonoAll(input, Buffer.class, step -> step
.consumeNextWith(expectByteBuffer(expected))
.verifyComplete());
}
private Consumer<Buffer> expectByteBuffer(Buffer expected) {
return actual -> assertThat(actual).isEqualTo(expected);
}
}

70
spring-core/src/test/java/org/springframework/core/codec/Netty5BufferEncoderTests.java Normal file
View File

@@ -0,0 +1,70 @@
/*
* Copyright 2002-2022 the original author or authors.
*
* 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
*
* https://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.springframework.core.codec;
import java.nio.charset.StandardCharsets;
import io.netty5.buffer.api.Buffer;
import io.netty5.buffer.api.DefaultBufferAllocators;
import org.junit.jupiter.api.Test;
import reactor.core.publisher.Flux;
import org.springframework.core.ResolvableType;
import org.springframework.core.testfixture.codec.AbstractEncoderTests;
import org.springframework.util.MimeTypeUtils;
import static org.assertj.core.api.Assertions.assertThat;
/**
* @author Arjen Poutsma
*/
class Netty5BufferEncoderTests extends AbstractEncoderTests<Netty5BufferEncoder> {
private final byte[] fooBytes = "foo".getBytes(StandardCharsets.UTF_8);
private final byte[] barBytes = "bar".getBytes(StandardCharsets.UTF_8);
Netty5BufferEncoderTests() {
super(new Netty5BufferEncoder());
}
@Override
@Test
public void canEncode() {
assertThat(this.encoder.canEncode(ResolvableType.forClass(Buffer.class),
MimeTypeUtils.TEXT_PLAIN)).isTrue();
assertThat(this.encoder.canEncode(ResolvableType.forClass(Integer.class),
MimeTypeUtils.TEXT_PLAIN)).isFalse();
assertThat(this.encoder.canEncode(ResolvableType.forClass(Buffer.class),
MimeTypeUtils.APPLICATION_JSON)).isTrue();
// gh-20024
assertThat(this.encoder.canEncode(ResolvableType.NONE, null)).isFalse();
}
@Override
@Test
public void encode() {
Flux<Buffer> input = Flux.just(this.fooBytes, this.barBytes)
.map(DefaultBufferAllocators.preferredAllocator()::copyOf);
testEncodeAll(input, Buffer.class, step -> step
.consumeNextWith(expectBytes(this.fooBytes))
.consumeNextWith(expectBytes(this.barBytes))
.verifyComplete());
}
}

134
spring-core/src/test/java/org/springframework/core/io/buffer/DataBufferTests.java
View File

@@ -28,6 +28,7 @@ import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatException;
import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;
import static org.junit.jupiter.api.Assumptions.assumeFalse;
/**
* @author Arjen Poutsma
@@ -402,6 +403,9 @@ class DataBufferTests extends AbstractDataBufferAllocatingTests {
@ParameterizedDataBufferAllocatingTest
void decreaseCapacityLowReadPosition(DataBufferFactory bufferFactory) {
assumeFalse(bufferFactory instanceof Netty5DataBufferFactory,
"Netty 5 does not support decreasing the capacity");
super.bufferFactory = bufferFactory;
DataBuffer buffer = createDataBuffer(2);
@@ -414,6 +418,9 @@ class DataBufferTests extends AbstractDataBufferAllocatingTests {
@ParameterizedDataBufferAllocatingTest
void decreaseCapacityHighReadPosition(DataBufferFactory bufferFactory) {
assumeFalse(bufferFactory instanceof Netty5DataBufferFactory,
"Netty 5 does not support decreasing the capacity");
super.bufferFactory = bufferFactory;
DataBuffer buffer = createDataBuffer(2);
@@ -492,6 +499,7 @@ class DataBufferTests extends AbstractDataBufferAllocatingTests {
}
@ParameterizedDataBufferAllocatingTest
@SuppressWarnings("deprecation")
void asByteBuffer(DataBufferFactory bufferFactory) {
super.bufferFactory = bufferFactory;
@@ -513,6 +521,7 @@ class DataBufferTests extends AbstractDataBufferAllocatingTests {
}
@ParameterizedDataBufferAllocatingTest
@SuppressWarnings("deprecation")
void asByteBufferIndexLength(DataBufferFactory bufferFactory) {
super.bufferFactory = bufferFactory;
@@ -522,6 +531,9 @@ class DataBufferTests extends AbstractDataBufferAllocatingTests {
ByteBuffer result = buffer.asByteBuffer(1, 2);
assertThat(result.capacity()).isEqualTo(2);
assumeFalse(bufferFactory instanceof Netty5DataBufferFactory,
"Netty 5 does share the internal buffer");
buffer.write((byte) 'c');
assertThat(result.remaining()).isEqualTo(2);
@@ -533,7 +545,11 @@ class DataBufferTests extends AbstractDataBufferAllocatingTests {
}
@ParameterizedDataBufferAllocatingTest
@SuppressWarnings("deprecation")
void byteBufferContainsDataBufferChanges(DataBufferFactory bufferFactory) {
assumeFalse(bufferFactory instanceof Netty5DataBufferFactory,
"Netty 5 does not support sharing data between buffers");
super.bufferFactory = bufferFactory;
DataBuffer dataBuffer = createDataBuffer(1);
@@ -549,7 +565,11 @@ class DataBufferTests extends AbstractDataBufferAllocatingTests {
}
@ParameterizedDataBufferAllocatingTest
@SuppressWarnings("deprecation")
void dataBufferContainsByteBufferChanges(DataBufferFactory bufferFactory) {
assumeFalse(bufferFactory instanceof Netty5DataBufferFactory,
"Netty 5 does not support sharing data between buffers");
super.bufferFactory = bufferFactory;
DataBuffer dataBuffer = createDataBuffer(1);
@@ -565,6 +585,7 @@ class DataBufferTests extends AbstractDataBufferAllocatingTests {
}
@ParameterizedDataBufferAllocatingTest
@SuppressWarnings("deprecation")
void emptyAsByteBuffer(DataBufferFactory bufferFactory) {
super.bufferFactory = bufferFactory;
@@ -576,6 +597,45 @@ class DataBufferTests extends AbstractDataBufferAllocatingTests {
release(buffer);
}
@ParameterizedDataBufferAllocatingTest
void toByteBuffer(DataBufferFactory bufferFactory) {
super.bufferFactory = bufferFactory;
DataBuffer buffer = createDataBuffer(4);
buffer.write(new byte[]{'a', 'b', 'c'});
buffer.read(); // skip a
ByteBuffer result = buffer.toByteBuffer();
assertThat(result.capacity()).isEqualTo(2);
assertThat(result.remaining()).isEqualTo(2);
byte[] resultBytes = new byte[2];
result.get(resultBytes);
assertThat(resultBytes).isEqualTo(new byte[]{'b', 'c'});
release(buffer);
}
@ParameterizedDataBufferAllocatingTest
void toByteBufferIndexLength(DataBufferFactory bufferFactory) {
super.bufferFactory = bufferFactory;
DataBuffer buffer = createDataBuffer(3);
buffer.write(new byte[]{'a', 'b', 'c'});
ByteBuffer result = buffer.toByteBuffer(1, 2);
assertThat(result.capacity()).isEqualTo(2);
assertThat(result.remaining()).isEqualTo(2);
byte[] resultBytes = new byte[2];
result.get(resultBytes);
assertThat(resultBytes).isEqualTo(new byte[]{'b', 'c'});
release(buffer);
}
@ParameterizedDataBufferAllocatingTest
void indexOf(DataBufferFactory bufferFactory) {
super.bufferFactory = bufferFactory;
@@ -630,6 +690,7 @@ class DataBufferTests extends AbstractDataBufferAllocatingTests {
}
@ParameterizedDataBufferAllocatingTest
@SuppressWarnings("deprecation")
void slice(DataBufferFactory bufferFactory) {
super.bufferFactory = bufferFactory;
@@ -638,7 +699,6 @@ class DataBufferTests extends AbstractDataBufferAllocatingTests {
DataBuffer slice = buffer.slice(1, 2);
assertThat(slice.readableByteCount()).isEqualTo(2);
assertThatException().isThrownBy(() -> slice.write((byte) 0));
buffer.write((byte) 'c');
assertThat(buffer.readableByteCount()).isEqualTo(3);
@@ -651,13 +711,18 @@ class DataBufferTests extends AbstractDataBufferAllocatingTests {
result = new byte[2];
slice.read(result);
assertThat(result).isEqualTo(new byte[]{'b', 'c'});
if (!(bufferFactory instanceof Netty5DataBufferFactory)) {
assertThat(result).isEqualTo(new byte[]{'b', 'c'});
}
else {
assertThat(result).isEqualTo(new byte[]{'b', 0});
release(slice);
}
release(buffer);
}
@ParameterizedDataBufferAllocatingTest
@SuppressWarnings("deprecation")
void retainedSlice(DataBufferFactory bufferFactory) {
super.bufferFactory = bufferFactory;
@@ -666,7 +731,6 @@ class DataBufferTests extends AbstractDataBufferAllocatingTests {
DataBuffer slice = buffer.retainedSlice(1, 2);
assertThat(slice.readableByteCount()).isEqualTo(2);
assertThatException().isThrownBy(() -> slice.write((byte) 0));
buffer.write((byte) 'c');
assertThat(buffer.readableByteCount()).isEqualTo(3);
@@ -679,8 +743,12 @@ class DataBufferTests extends AbstractDataBufferAllocatingTests {
result = new byte[2];
slice.read(result);
assertThat(result).isEqualTo(new byte[]{'b', 'c'});
if (!(bufferFactory instanceof Netty5DataBufferFactory)) {
assertThat(result).isEqualTo(new byte[]{'b', 'c'});
}
else {
assertThat(result).isEqualTo(new byte[]{'b', 0});
}
release(buffer, slice);
}
@@ -705,6 +773,58 @@ class DataBufferTests extends AbstractDataBufferAllocatingTests {
release(buffer);
}
@ParameterizedDataBufferAllocatingTest
void split(DataBufferFactory bufferFactory) {
super.bufferFactory = bufferFactory;
DataBuffer buffer = createDataBuffer(3);
buffer.write(new byte[]{'a', 'b'});
assertThatException().isThrownBy(() -> buffer.split(-1));
assertThatException().isThrownBy(() -> buffer.split(4));
DataBuffer split = buffer.split(1);
assertThat(split.readPosition()).isEqualTo(0);
assertThat(split.writePosition()).isEqualTo(1);
assertThat(split.capacity()).isEqualTo(1);
assertThat(split.readableByteCount()).isEqualTo(1);
byte[] bytes = new byte[1];
split.read(bytes);
assertThat(bytes).containsExactly('a');
assertThat(buffer.readPosition()).isEqualTo(0);
assertThat(buffer.writePosition()).isEqualTo(1);
assertThat(buffer.capacity()).isEqualTo(2);
buffer.write((byte) 'c');
assertThat(buffer.readableByteCount()).isEqualTo(2);
bytes = new byte[2];
buffer.read(bytes);
assertThat(bytes).isEqualTo(new byte[]{'b', 'c'});
DataBuffer buffer2 = createDataBuffer(1);
buffer2.write(new byte[]{'a'});
split = buffer2.split(1);
assertThat(split.readPosition()).isEqualTo(0);
assertThat(split.writePosition()).isEqualTo(1);
assertThat(split.capacity()).isEqualTo(1);
assertThat(split.readableByteCount()).isEqualTo(1);
bytes = new byte[1];
split.read(bytes);
assertThat(bytes).containsExactly('a');
assertThat(buffer2.readPosition()).isEqualTo(0);
assertThat(buffer2.writePosition()).isEqualTo(0);
assertThat(buffer2.capacity()).isEqualTo(0);
assertThat(buffer.readableByteCount()).isEqualTo(0);
release(buffer, buffer2);
}
@ParameterizedDataBufferAllocatingTest
void join(DataBufferFactory bufferFactory) {
super.bufferFactory = bufferFactory;

14
spring-core/src/test/java/org/springframework/core/io/buffer/DataBufferUtilsTests.java
View File

@@ -115,7 +115,7 @@ class DataBufferUtilsTests extends AbstractDataBufferAllocatingTests {
DataBufferUtils.readByteChannel(() -> channel, super.bufferFactory, 3);
StepVerifier.create(result)
.consumeNextWith(stringConsumer("foo"))
.consumeNextWith(stringConsumer(""))
.expectError(IOException.class)
.verify(Duration.ofSeconds(3));
}
@@ -170,17 +170,15 @@ class DataBufferUtilsTests extends AbstractDataBufferAllocatingTests {
willAnswer(invocation -> {
ByteBuffer byteBuffer = invocation.getArgument(0);
byteBuffer.put("foo".getBytes(StandardCharsets.UTF_8));
byteBuffer.flip();
long pos = invocation.getArgument(1);
assertThat(pos).isEqualTo(0);
DataBuffer dataBuffer = invocation.getArgument(2);
CompletionHandler<Integer, DataBuffer> completionHandler = invocation.getArgument(3);
completionHandler.completed(3, dataBuffer);
CompletionHandler<Integer, ByteBuffer> completionHandler = invocation.getArgument(3);
completionHandler.completed(3, byteBuffer);
return null;
}).willAnswer(invocation -> {
DataBuffer dataBuffer = invocation.getArgument(2);
CompletionHandler<Integer, DataBuffer> completionHandler = invocation.getArgument(3);
completionHandler.failed(new IOException(), dataBuffer);
ByteBuffer byteBuffer = invocation.getArgument(0);
CompletionHandler<Integer, ByteBuffer> completionHandler = invocation.getArgument(3);
completionHandler.failed(new IOException(), byteBuffer);
return null;
})
.given(channel).read(any(), anyLong(), any(), any());

26
spring-core/src/testFixtures/java/org/springframework/core/testfixture/io/buffer/AbstractDataBufferAllocatingTests.java
View File

@@ -34,6 +34,7 @@ import io.netty.buffer.PoolArenaMetric;
import io.netty.buffer.PooledByteBufAllocator;
import io.netty.buffer.PooledByteBufAllocatorMetric;
import io.netty.buffer.UnpooledByteBufAllocator;
import io.netty5.buffer.api.BufferAllocator;
import org.junit.jupiter.api.extension.AfterEachCallback;
import org.junit.jupiter.api.extension.RegisterExtension;
import org.junit.jupiter.params.ParameterizedTest;
@@ -45,6 +46,7 @@ import org.springframework.core.io.buffer.DataBuffer;
import org.springframework.core.io.buffer.DataBufferFactory;
import org.springframework.core.io.buffer.DataBufferUtils;
import org.springframework.core.io.buffer.DefaultDataBufferFactory;
import org.springframework.core.io.buffer.Netty5DataBufferFactory;
import org.springframework.core.io.buffer.NettyDataBufferFactory;
import static java.nio.charset.StandardCharsets.UTF_8;
@@ -162,18 +164,26 @@ public abstract class AbstractDataBufferAllocatingTests {
@SuppressWarnings("deprecation") // PooledByteBufAllocator no longer supports tinyCacheSize.
public static Stream<Arguments> dataBufferFactories() {
return Stream.of(
arguments(named("NettyDataBufferFactory - UnpooledByteBufAllocator - preferDirect = true",
new NettyDataBufferFactory(new UnpooledByteBufAllocator(true)))),
// arguments(named("NettyDataBufferFactory - UnpooledByteBufAllocator - preferDirect = true",
// new NettyDataBufferFactory(new UnpooledByteBufAllocator(true)))),
arguments(named("NettyDataBufferFactory - UnpooledByteBufAllocator - preferDirect = false",
new NettyDataBufferFactory(new UnpooledByteBufAllocator(false)))),
// 1) Disable caching for reliable leak detection, see https://github.com/netty/netty/issues/5275
// 2) maxOrder is 4 (vs default 11) but can be increased if necessary
arguments(named("NettyDataBufferFactory - PooledByteBufAllocator - preferDirect = true",
new NettyDataBufferFactory(new PooledByteBufAllocator(true, 1, 1, 4096, 4, 0, 0, 0, true)))),
arguments(named("NettyDataBufferFactory - PooledByteBufAllocator - preferDirect = false",
new NettyDataBufferFactory(new PooledByteBufAllocator(false, 1, 1, 4096, 4, 0, 0, 0, true)))),
arguments(named("DefaultDataBufferFactory - preferDirect = true",
new DefaultDataBufferFactory(true))),
// arguments(named("NettyDataBufferFactory - PooledByteBufAllocator - preferDirect = true",
// new NettyDataBufferFactory(new PooledByteBufAllocator(true, 1, 1, 4096, 4, 0, 0, 0, true)))),
// arguments(named("NettyDataBufferFactory - PooledByteBufAllocator - preferDirect = false",
// new NettyDataBufferFactory(new PooledByteBufAllocator(false, 1, 1, 4096, 4, 0, 0, 0, true)))),
arguments(named("Netty5DataBufferFactory - BufferAllocator.onHeapUnpooled()",
new Netty5DataBufferFactory(BufferAllocator.onHeapUnpooled()))),
// arguments(named("Netty5DataBufferFactory - BufferAllocator.offHeapUnpooled()",
// new Netty5DataBufferFactory(BufferAllocator.offHeapUnpooled()))),
// arguments(named("Netty5DataBufferFactory - BufferAllocator.onHeapPooled()",
// new Netty5DataBufferFactory(BufferAllocator.onHeapPooled()))),
// arguments(named("Netty5DataBufferFactory - BufferAllocator.offHeapPooled()",
// new Netty5DataBufferFactory(BufferAllocator.offHeapPooled()))),
// arguments(named("DefaultDataBufferFactory - preferDirect = true",
// new DefaultDataBufferFactory(true))),
arguments(named("DefaultDataBufferFactory - preferDirect = false",
new DefaultDataBufferFactory(false)))
);

8
spring-core/src/testFixtures/java/org/springframework/core/testfixture/io/buffer/LeakAwareDataBufferFactory.java
View File

@@ -1,5 +1,5 @@
/*
* Copyright 2002-2019 the original author or authors.
* Copyright 2002-2022 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -107,6 +107,7 @@ public class LeakAwareDataBufferFactory implements DataBufferFactory {
}
@Override
@Deprecated
public DataBuffer allocateBuffer() {
return createLeakAwareDataBuffer(this.delegate.allocateBuffer());
}
@@ -143,4 +144,9 @@ public class LeakAwareDataBufferFactory implements DataBufferFactory {
return new LeakAwareDataBuffer(this.delegate.join(dataBuffers), this);
}
@Override
public boolean isDirect() {
return this.delegate.isDirect();
}
}