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Add SVM metadata and minimal substitutions to build graalvm native image applications. (#8963) 

Motivation:

GraalVM native images are a new way to deliver java applications. Netty is one of the most popular libraries however there are a few limitations that make it impossible to use with native images out of the box. Adding a few metadata (in specific modules will allow the compilation to success and produce working binaries)

Modification:

Added properties files in `META-INF` and substitutions classes (under `internal.svm`) will solve the compilation issues. The substitutions classes are not visible and do not have a public constructor so they are not visible to end users.

Result:

Fixes #8959 

This fix is very conservative as it applies the minimum config required to build:

* pure netty servers
* vert.x applications
* grpc applications

The build is having trouble due to checkstyle which does not seem to be able to find the copyright notice on property files.
This commit is contained in:
Paulo Lopes 2019-04-29 08:39:42 +02:00 committed by Norman Maurer
parent fb6f8f513a
commit f1495e1945
16 changed files with 546 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
codec-http/src/main/resources/META-INF/native-image/io.netty/codec-http/native-image.properties Normal file
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@ -0,0 +1,15 @@
# Copyright 2019 The Netty Project
#
# The Netty Project licenses this file to you under the Apache License,
# version 2.0 (the "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at:
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
Args = --delay-class-initialization-to-runtime=io.netty.handler.codec.http.HttpObjectEncoder,io.netty.handler.codec.http.websocketx.WebSocket00FrameEncoder

16
codec-http2/src/main/resources/META-INF/native-image/io.netty/codec-http2/native-image.properties Normal file
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@ -0,0 +1,16 @@
# Copyright 2019 The Netty Project
#
# The Netty Project licenses this file to you under the Apache License,
# version 2.0 (the "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at:
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
Args = --rerun-class-initialization-at-runtime=io.netty.handler.codec.http2.Http2CodecUtil \
--delay-class-initialization-to-runtime=io.netty.handler.codec.http2.DefaultHttp2FrameWriter

7
common/pom.xml
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@ -38,6 +38,13 @@
</properties>
<dependencies>
<dependency>
<groupId>com.oracle.substratevm</groupId>
<artifactId>svm</artifactId>
<version>${graalvm.version}</version>
<!-- Provided scope as it is only needed for compiling the SVM substitution classes -->
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.jctools</groupId>
<artifactId>jctools-core</artifactId>

33
common/src/main/java/io/netty/util/internal/svm/CleanerJava6Substitution.java Normal file
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@ -0,0 +1,33 @@
/*
* Copyright 2019 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package io.netty.util.internal.svm;
import com.oracle.svm.core.annotate.Alias;
import com.oracle.svm.core.annotate.RecomputeFieldValue;
import com.oracle.svm.core.annotate.TargetClass;
@TargetClass(className = "io.netty.util.internal.CleanerJava6")
final class CleanerJava6Substitution {
private CleanerJava6Substitution() {
}
@Alias
@RecomputeFieldValue(
kind = RecomputeFieldValue.Kind.FieldOffset,
declClassName = "java.nio.DirectByteBuffer",
name = "cleaner")
private static long CLEANER_FIELD_OFFSET;
}

33
common/src/main/java/io/netty/util/internal/svm/PlatformDependent0Substitution.java Normal file
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@ -0,0 +1,33 @@
/*
* Copyright 2019 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package io.netty.util.internal.svm;
import com.oracle.svm.core.annotate.Alias;
import com.oracle.svm.core.annotate.RecomputeFieldValue;
import com.oracle.svm.core.annotate.TargetClass;
@TargetClass(className = "io.netty.util.internal.PlatformDependent0")
final class PlatformDependent0Substitution {
private PlatformDependent0Substitution() {
}
@Alias
@RecomputeFieldValue(
kind = RecomputeFieldValue.Kind.FieldOffset,
declClassName = "java.nio.Buffer",
name = "address")
private static long ADDRESS_FIELD_OFFSET;
}

39
common/src/main/java/io/netty/util/internal/svm/PlatformDependentSubstitution.java Normal file
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@ -0,0 +1,39 @@
/*
* Copyright 2019 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package io.netty.util.internal.svm;
import com.oracle.svm.core.annotate.Alias;
import com.oracle.svm.core.annotate.RecomputeFieldValue;
import com.oracle.svm.core.annotate.TargetClass;
@TargetClass(className = "io.netty.util.internal.PlatformDependent")
final class PlatformDependentSubstitution {
private PlatformDependentSubstitution() {
}
/**
* The class PlatformDependent caches the byte array base offset by reading the
* field from PlatformDependent0. The automatic recomputation of Substrate VM
* correctly recomputes the field in PlatformDependent0, but since the caching
* in PlatformDependent happens during image building, the non-recomputed value
* is cached.
*/
@Alias
@RecomputeFieldValue(
kind = RecomputeFieldValue.Kind.ArrayBaseOffset,
declClass = byte[].class)
private static long BYTE_ARRAY_BASE_OFFSET;
}

32
common/src/main/java/io/netty/util/internal/svm/UnsafeRefArrayAccessSubstitution.java Normal file
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@ -0,0 +1,32 @@
/*
* Copyright 2019 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package io.netty.util.internal.svm;
import com.oracle.svm.core.annotate.Alias;
import com.oracle.svm.core.annotate.RecomputeFieldValue;
import com.oracle.svm.core.annotate.TargetClass;
@TargetClass(className = "io.netty.util.internal.shaded.org.jctools.util.UnsafeRefArrayAccess")
final class UnsafeRefArrayAccessSubstitution {
private UnsafeRefArrayAccessSubstitution() {
}
@Alias
@RecomputeFieldValue(
kind = RecomputeFieldValue.Kind.ArrayIndexShift,
declClass = Object[].class)
public static int REF_ELEMENT_SHIFT;
}

21
common/src/main/java/io/netty/util/internal/svm/package-info.java Normal file
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@ -0,0 +1,21 @@
/*
* Copyright 2019 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
/**
* SVM substitutions for classes that will cause trouble while compiling
* into native image.
*/
package io.netty.util.internal.svm;

17
pom.xml
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@ -68,6 +68,19 @@
</developers>
<profiles>
<!-- Detect if we use GraalVM and if so enable the native image testsuite -->
<profile>
<id>graal</id>
<activation>
<file>
<!-- GraalVM Component Updater should exists when using GraalVM-->
<exists>${java.home}/bin/native-image</exists>
</file>
</activation>
<properties>
<skipNativeImageTestsuite>false</skipNativeImageTestsuite>
</properties>
</profile>
<!-- JDK13 -->
<profile>
<id>java13</id>
@ -299,6 +312,9 @@
<skipAutobahnTestsuite>false</skipAutobahnTestsuite>
<skipHttp2Testsuite>false</skipHttp2Testsuite>
<skipJapicmp>false</skipJapicmp>
<graalvm.version>1.0.0-rc15</graalvm.version>
<!-- By default skip native testsuite as it requires a custom environment with graalvm installed -->
<skipNativeImageTestsuite>true</skipNativeImageTestsuite>
</properties>
<modules>
@ -337,6 +353,7 @@
<module>testsuite-http2</module>
<module>testsuite-osgi</module>
<module>testsuite-shading</module>
<module>testsuite-native-image</module>
<module>microbench</module>
<module>bom</module>
</modules>

122
testsuite-native-image/pom.xml Normal file
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@ -0,0 +1,122 @@
<?xml version="1.0" encoding="UTF-8"?>
<!--
~ Copyright 2017 The Netty Project
~
~ The Netty Project licenses this file to you under the Apache License,
~ version 2.0 (the "License"); you may not use this file except in compliance
~ with the License. You may obtain a copy of the License at:
~
~ http://www.apache.org/licenses/LICENSE-2.0
~
~ Unless required by applicable law or agreed to in writing, software
~ distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
~ WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
~ License for the specific language governing permissions and limitations
~ under the License.
-->
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>io.netty</groupId>
<artifactId>netty-parent</artifactId>
<version>4.1.36.Final-SNAPSHOT</version>
</parent>
<artifactId>netty-testsuite-native-image</artifactId>
<packaging>jar</packaging>
<name>Netty/Testsuite/NativeImage</name>
<properties>
<skipJapicmp>true</skipJapicmp>
</properties>
<dependencies>
<dependency>
<groupId>${project.groupId}</groupId>
<artifactId>netty-common</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>${project.groupId}</groupId>
<artifactId>netty-buffer</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>${project.groupId}</groupId>
<artifactId>netty-transport</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>${project.groupId}</groupId>
<artifactId>netty-handler</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>${project.groupId}</groupId>
<artifactId>netty-codec-http</artifactId>
<version>${project.version}</version>
</dependency>
</dependencies>
<profiles>
<profile>
<id>skipTests</id>
<activation>
<property>
<name>skipTests</name>
</property>
</activation>
<properties>
<skipNativeImageTestsuite>true</skipNativeImageTestsuite>
</properties>
</profile>
</profiles>
<build>
<plugins>
<plugin>
<groupId>com.oracle.substratevm</groupId>
<artifactId>native-image-maven-plugin</artifactId>
<version>${graalvm.version}</version>
<executions>
<execution>
<goals>
<goal>native-image</goal>
</goals>
<phase>package</phase>
</execution>
</executions>
<configuration>
<skip>${skipNativeImageTestsuite}</skip>
<imageName>${project.artifactId}</imageName>
<mainClass>io.netty.testsuite.svm.HttpNativeServer</mainClass>
<buildArgs>--report-unsupported-elements-at-runtime --allow-incomplete-classpath</buildArgs>
</configuration>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.6.0</version>
<executions>
<!-- This will do a whitesmoke test: if the substitutions are missing the binary will fail to run -->
<!-- If the metadata is missing the build above will fail -->
<execution>
<id>verify-native-image</id>
<phase>verify</phase>
<goals>
<goal>exec</goal>
</goals>
</execution>
</executions>
<configuration>
<skip>${skipNativeImageTestsuite}</skip>
<executable>${project.build.directory}/${project.artifactId}</executable>
</configuration>
</plugin>
</plugins>
</build>
</project>

67
testsuite-native-image/src/main/java/io/netty/testsuite/svm/HttpNativeServer.java Normal file
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@ -0,0 +1,67 @@
/*
* Copyright 2019 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package io.netty.testsuite.svm;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.logging.LogLevel;
import io.netty.handler.logging.LoggingHandler;
import io.netty.handler.ssl.SslContext;
import io.netty.handler.ssl.SslContextBuilder;
import io.netty.handler.ssl.util.SelfSignedCertificate;
/**
* An HTTP server that sends back the content of the received HTTP request
* in a pretty plaintext form.
*/
public final class HttpNativeServer {
/**
* Main entry point (not instantiable)
*/
private HttpNativeServer() {
}
public static void main(String[] args) throws Exception {
// Configure the server.
EventLoopGroup bossGroup = new NioEventLoopGroup(1);
EventLoopGroup workerGroup = new NioEventLoopGroup();
// Control status.
boolean serverStartSucess = false;
try {
ServerBootstrap b = new ServerBootstrap();
b.option(ChannelOption.SO_BACKLOG, 1024);
b.group(bossGroup, workerGroup)
.channel(NioServerSocketChannel.class)
.handler(new LoggingHandler(LogLevel.INFO))
.childHandler(new HttpNativeServerInitializer());
Channel channel = b.bind(0).sync().channel();
System.err.println("Server started, will shutdown now.");
channel.close().sync();
serverStartSucess = true;
} finally {
bossGroup.shutdownGracefully();
workerGroup.shutdownGracefully();
}
// return the right system exit code to signal success
System.exit(serverStartSucess ? 0 : 1);
}
}

67
testsuite-native-image/src/main/java/io/netty/testsuite/svm/HttpNativeServerHandler.java Normal file
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@ -0,0 +1,67 @@
/*
* Copyright 2013 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package io.netty.testsuite.svm;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.handler.codec.http.DefaultFullHttpResponse;
import io.netty.handler.codec.http.FullHttpResponse;
import io.netty.handler.codec.http.HttpObject;
import io.netty.handler.codec.http.HttpUtil;
import io.netty.handler.codec.http.HttpRequest;
import io.netty.util.AsciiString;
import static io.netty.handler.codec.http.HttpHeaderNames.*;
import static io.netty.handler.codec.http.HttpResponseStatus.*;
import static io.netty.handler.codec.http.HttpVersion.*;
public class HttpNativeServerHandler extends SimpleChannelInboundHandler<HttpObject> {
private static final byte[] CONTENT = { 'H', 'e', 'l', 'l', 'o', ' ', 'N', 'a', 't', 'i', 'v', 'e' };
private static final AsciiString KEEP_ALIVE = AsciiString.cached("keep-alive");
@Override
public void channelReadComplete(ChannelHandlerContext ctx) {
ctx.flush();
}
@Override
public void channelRead0(ChannelHandlerContext ctx, HttpObject msg) {
if (msg instanceof HttpRequest) {
HttpRequest req = (HttpRequest) msg;
boolean keepAlive = HttpUtil.isKeepAlive(req);
FullHttpResponse response = new DefaultFullHttpResponse(HTTP_1_1, OK, Unpooled.wrappedBuffer(CONTENT));
response.headers().set(CONTENT_TYPE, "text/plain");
response.headers().setInt(CONTENT_LENGTH, response.content().readableBytes());
if (!keepAlive) {
ctx.write(response).addListener(ChannelFutureListener.CLOSE);
} else {
response.headers().set(CONNECTION, KEEP_ALIVE);
ctx.write(response);
}
}
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
cause.printStackTrace();
ctx.close();
}
}

34
testsuite-native-image/src/main/java/io/netty/testsuite/svm/HttpNativeServerInitializer.java Normal file
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@ -0,0 +1,34 @@
/*
* Copyright 2019 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package io.netty.testsuite.svm;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.socket.SocketChannel;
import io.netty.handler.codec.http.HttpServerCodec;
import io.netty.handler.codec.http.HttpServerExpectContinueHandler;
import io.netty.handler.ssl.SslContext;
public class HttpNativeServerInitializer extends ChannelInitializer<SocketChannel> {
@Override
public void initChannel(SocketChannel ch) {
ChannelPipeline p = ch.pipeline();
p.addLast(new HttpServerCodec());
p.addLast(new HttpServerExpectContinueHandler());
p.addLast(new HttpNativeServerHandler());
}
}

20
testsuite-native-image/src/main/java/io/netty/testsuite/svm/package-info.java Normal file
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@ -0,0 +1,20 @@
/*
* Copyright 2019 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
/**
* A hello world server that should be compiled to native.
*/
package io.netty.testsuite.svm;

15
transport/src/main/resources/META-INF/native-image/io.netty/transport/native-image.properties Normal file
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@ -0,0 +1,15 @@
# Copyright 2019 The Netty Project
#
# The Netty Project licenses this file to you under the Apache License,
# version 2.0 (the "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at:
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
Args = -H:ReflectionConfigurationResources=${.}/reflection-config.json

8
transport/src/main/resources/META-INF/native-image/io.netty/transport/reflection-config.json Normal file
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@ -0,0 +1,8 @@
[
{
"name": "io.netty.channel.socket.nio.NioServerSocketChannel",
"methods": [
{ "name": "<init>", "parameterTypes": [] }
]
}
]