dba46aa3da
Motivation: Since GraalVM version 19.3.0, instances of java.net.InetAddress (and its subclasses Inet4Address and Inet6Address) are not allowed in native image heap (that is, they cannot be stored in static fields of classes initialized at build time or be reachable through static fields of such classes). When building a native image, it makes sense to initialize at build time as many classes as possible. But some fields of some classes in Netty (for example, NetUtil.LOCALHOST4) contain InetAddress instances. If a program is using code path that makes it possible to reach such fields at build time initialization, it becomes impossible to build a native image initializing core Netty classes initialized at runtime. An example of such a program is a client that uses netty-dns. Modifications: - Add netty-testsuite-native-image-client Maven module to test that such an example program can be built after the corresponding fixes - Add native-image.properties to resolver-dns module to move initialization of some classes to runtime (some of them are parsing configuration during initialization, so it makes no sense to initialize them at build time; for others, it's needed to avoid InetAddress reachability at build time) - Add substitutions for NetUtil.LOCALHOST4, NetUtil.LOCALHOST6 and NetUtil.LOCALHOST to overcome the InetAddress-related prohibition - Extract some initialization code from NetUtil to NetUtilInitializations to allow it to be used by the substitutions Result: A client program using netty-dns with --initialize-at-build-time=io.netty builds successfully
107 lines
3.5 KiB
XML
107 lines
3.5 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!--
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~ Copyright 2020 The Netty Project
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~
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~ The Netty Project licenses this file to you under the Apache License,
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~ version 2.0 (the "License"); you may not use this file except in compliance
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~ with the License. You may obtain a copy of the License at:
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~
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~ https://www.apache.org/licenses/LICENSE-2.0
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~
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~ Unless required by applicable law or agreed to in writing, software
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~ distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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~ WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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~ License for the specific language governing permissions and limitations
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~ under the License.
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-->
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<project xmlns="https://maven.apache.org/POM/4.0.0" xmlns:xsi="https://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="https://maven.apache.org/POM/4.0.0 https://maven.apache.org/maven-v4_0_0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<parent>
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<groupId>io.netty</groupId>
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<artifactId>netty-parent</artifactId>
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<version>5.0.0.Final-SNAPSHOT</version>
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</parent>
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<artifactId>netty-testsuite-native-image-client</artifactId>
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<packaging>jar</packaging>
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<name>Netty/Testsuite/NativeImage/Client</name>
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<properties>
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<skipJapicmp>true</skipJapicmp>
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</properties>
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<dependencies>
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<dependency>
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<groupId>${project.groupId}</groupId>
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<artifactId>netty-transport</artifactId>
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<version>${project.version}</version>
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</dependency>
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<dependency>
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<groupId>${project.groupId}</groupId>
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<artifactId>netty-resolver-dns</artifactId>
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<version>${project.version}</version>
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</dependency>
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</dependencies>
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<profiles>
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<profile>
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<id>skipTests</id>
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<activation>
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<property>
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<name>skipTests</name>
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</property>
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</activation>
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<properties>
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<skipNativeImageTestsuite>true</skipNativeImageTestsuite>
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</properties>
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</profile>
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</profiles>
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<build>
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<plugins>
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<plugin>
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<groupId>com.oracle.substratevm</groupId>
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<artifactId>native-image-maven-plugin</artifactId>
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<version>${graalvm.version}</version>
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<executions>
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<execution>
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<goals>
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<goal>native-image</goal>
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</goals>
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<phase>package</phase>
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</execution>
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</executions>
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<configuration>
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<skip>${skipNativeImageTestsuite}</skip>
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<imageName>${project.artifactId}</imageName>
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<mainClass>io.netty.testsuite.svm.client.DnsNativeClient</mainClass>
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<buildArgs>--report-unsupported-elements-at-runtime --allow-incomplete-classpath --no-fallback --initialize-at-build-time=io.netty -H:ReflectionConfigurationResources=reflection-config.json</buildArgs>
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</configuration>
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</plugin>
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<plugin>
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<groupId>org.codehaus.mojo</groupId>
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<artifactId>exec-maven-plugin</artifactId>
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<version>1.6.0</version>
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<executions>
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<!-- This will do a whitesmoke test: if the substitutions are missing the binary will fail to run -->
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<!-- If the metadata is missing the build above will fail -->
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<execution>
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<id>verify-native-image</id>
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<phase>verify</phase>
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<goals>
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<goal>exec</goal>
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</goals>
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</execution>
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</executions>
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<configuration>
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<skip>${skipNativeImageTestsuite}</skip>
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<executable>${project.build.directory}/${project.artifactId}</executable>
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</configuration>
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</plugin>
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</plugins>
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</build>
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</project>
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