Added native-image examples

native-image-examples/README.md

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+# Vert.x Native Image examples
+
+This directory includes basic example of vert.x applications that have been
+compiled to a native image.
+
+* [vertx http server](./vertx-http-server)
+* [vertx https server](./vertx-https-server)
+* [vertx web client](./vertx-web-client)
+* [vertx grpc server](./vertx-grpc-server)
+* [vertx grpc client](./vertx-grpc-client)

native-image-examples/vertx-grpc-client/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<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/xsd/maven-4.0.0.xsd">
+
+ <modelVersion>4.0.0</modelVersion>
+
+ <groupId>io.vertx</groupId>
+ <artifactId>vertx-native-image-grpc-client-example</artifactId>
+ <version>3.7.0</version>
+
+ <properties>
+ <vertx.verticle>io.vertx.example.MainVerticle</vertx.verticle>
+
+ <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+ <maven.compiler.target>1.8</maven.compiler.target>
+ <maven.compiler.source>1.8</maven.compiler.source>
+ <maven.compiler.testSource>1.8</maven.compiler.testSource>
+ <maven.compiler.testTarget>1.8</maven.compiler.testTarget>
+ <graal.version>19.0.0</graal.version>
+ <vertx.grpc.version>1.16.1</vertx.grpc.version>
+ </properties>
+
+ <dependencyManagement>
+ <dependencies>
+ <dependency>
+ <groupId>io.vertx</groupId>
+ <artifactId>vertx-stack-depchain</artifactId>
+ <version>${project.version}</version>
+ <type>pom</type>
+ <scope>import</scope>
+ </dependency>
+ </dependencies>
+ </dependencyManagement>
+
+ <dependencies>
+ <dependency>
+ <groupId>com.oracle.substratevm</groupId>
+ <artifactId>svm-driver</artifactId>
+ <version>${graal.version}</version>
+ <scope>provided</scope>
+ </dependency>
+ <dependency>
+ <groupId>io.vertx</groupId>
+ <artifactId>vertx-core</artifactId>
+ </dependency>
+ <dependency>
+ <groupId>io.vertx</groupId>
+ <artifactId>vertx-grpc</artifactId>
+ </dependency>
+ </dependencies>
+
+ <build>
+ <extensions>
+ <extension>
+ <groupId>kr.motd.maven</groupId>
+ <artifactId>os-maven-plugin</artifactId>
+ <version>1.4.1.Final</version>
+ </extension>
+ </extensions>
+ <plugins>
+ <plugin>
+ <groupId>org.xolstice.maven.plugins</groupId>
+ <artifactId>protobuf-maven-plugin</artifactId>
+ <version>0.5.0</version>
+ <configuration>
+ <!--
+ The version of protoc must match protobuf-java. If you don't depend on
+ protobuf-java directly, you will be transitively depending on the
+ protobuf-java version that grpc depends on.
+ -->
+ <protocArtifact>com.google.protobuf:protoc:3.6.1:exe:${os.detected.classifier}</protocArtifact>
+ <pluginId>grpc-java</pluginId>
+ <pluginArtifact>io.vertx:protoc-gen-grpc-java:${vertx.grpc.version}:exe:${os.detected.classifier}</pluginArtifact>
+ </configuration>
+ <executions>
+ <execution>
+ <id>compile</id>
+ <goals>
+ <goal>compile</goal>
+ <goal>compile-custom</goal>
+ </goals>
+ </execution>
+ </executions>
+ </plugin>
+ <plugin>
+ <groupId>io.reactiverse</groupId>
+ <artifactId>vertx-maven-plugin</artifactId>
+ <version>1.0.18</version>
+ <executions>
+ <execution>
+ <id>vmp</id>
+ <goals>
+ <goal>initialize</goal>
+ <goal>package</goal>
+ </goals>
+ </execution>
+ </executions>
+ <configuration>
+ <redeploy>true</redeploy>
+ </configuration>
+ </plugin>
+ <plugin>
+ <groupId>com.oracle.substratevm</groupId>
+ <artifactId>native-image-maven-plugin</artifactId>
+ <version>${graal.version}</version>
+ <executions>
+ <execution>
+ <goals>
+ <goal>native-image</goal>
+ </goals>
+ <phase>package</phase>
+ </execution>
+ </executions>
+ <configuration>
+ <imageName>${project.artifactId}</imageName>
+ <mainClass>io.vertx.core.Launcher</mainClass>
+ <buildArgs>--report-unsupported-elements-at-runtime --allow-incomplete-classpath</buildArgs>
+ </configuration>
+ </plugin>
+ </plugins>
+ </build>
+</project>

native-image-examples/vertx-grpc-client/src/main/java/SVMSubstitutions.java

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+// TODO: this file should be removed once core uses netty > 4.1.36
+import com.oracle.svm.core.annotate.*;
+import org.graalvm.nativeimage.*;
+
+/**
+ * This substitution allows the usage of platform specific code to do low level
+ * buffer related tasks
+ */
+@TargetClass(className = "io.netty.util.internal.CleanerJava6")
+final class Target_io_netty_util_internal_CleanerJava6 {
+
+ @Alias
+ @RecomputeFieldValue(kind = RecomputeFieldValue.Kind.FieldOffset, declClassName = "java.nio.DirectByteBuffer", name = "cleaner")
+ private static long CLEANER_FIELD_OFFSET;
+}
+
+/**
+ * This substitution allows the usage of platform specific code to do low level
+ * buffer related tasks
+ */
+@TargetClass(className = "io.netty.util.internal.PlatformDependent0")
+final class Target_io_netty_util_internal_PlatformDependent0 {
+
+ @Alias
+ @RecomputeFieldValue(kind = RecomputeFieldValue.Kind.FieldOffset, declClassName = "java.nio.Buffer", name = "address")
+ private static long ADDRESS_FIELD_OFFSET;
+}
+
+@TargetClass(className = "io.netty.util.internal.PlatformDependent")
+final class Target_io_netty_util_internal_PlatformDependent {
+ /**
+ * 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;
+}
+
+/**
+ * This substitution allows the usage of platform specific code to do low level
+ * buffer related tasks
+ */
+@TargetClass(className = "io.netty.util.internal.shaded.org.jctools.util.UnsafeRefArrayAccess")
+final class Target_io_netty_util_internal_shaded_org_jctools_util_UnsafeRefArrayAccess {
+
+ @Alias
+ @RecomputeFieldValue(kind = RecomputeFieldValue.Kind.ArrayIndexShift, declClass = Object[].class)
+ public static int REF_ELEMENT_SHIFT;
+}
+
+/**
+ * This substitution forces the usage of the blocking DNS resolver
+ */
+@TargetClass(className = "io.vertx.core.spi.resolver.ResolverProvider")
+final class Target_io_vertx_core_spi_resolver_ResolverProvider {
+
+ @Substitute
+ public static io.vertx.core.spi.resolver.ResolverProvider factory(io.vertx.core.Vertx vertx, io.vertx.core.dns.AddressResolverOptions options) {
+ return new io.vertx.core.impl.resolver.DefaultResolverProvider();
+ }
+}

native-image-examples/vertx-grpc-client/src/main/java/io/vertx/example/MainVerticle.java

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+package io.vertx.example;
+
+import io.grpc.ManagedChannel;
+import io.grpc.examples.helloworld.GreeterGrpc;
+import io.grpc.examples.helloworld.HelloRequest;
+import io.vertx.core.AbstractVerticle;
+import io.vertx.grpc.VertxChannelBuilder;
+
+public class MainVerticle extends AbstractVerticle {
+
+ @Override
+ public void start() {
+ ManagedChannel channel = VertxChannelBuilder
+ .forAddress(vertx, "localhost", 50051)
+ .usePlaintext(true)
+ .build();
+ GreeterGrpc.GreeterVertxStub stub = GreeterGrpc.newVertxStub(channel);
+ HelloRequest request = HelloRequest.newBuilder().setName("Paulo").build();
+ stub.sayHello(request, asyncResponse -> {
+ if (asyncResponse.succeeded()) {
+ System.out.println("Succeeded " + asyncResponse.result().getMessage());
+ } else {
+ asyncResponse.cause().printStackTrace();
+ }
+ });
+ }
+}

native-image-examples/vertx-grpc-client/src/main/proto/helloworld.proto

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+syntax = "proto3";
+
+option java_multiple_files = true;
+option java_package = "io.grpc.examples.helloworld";
+option java_outer_classname = "HelloWorldProto";
+option objc_class_prefix = "HLW";
+
+package helloworld;
+
+// The greeting service definition.
+service Greeter {
+ // Sends a greeting
+ rpc SayHello (HelloRequest) returns (HelloReply) {}
+}
+
+// The request message containing the user's name.
+message HelloRequest {
+ string name = 1;
+}
+
+// The response message containing the greetings
+message HelloReply {
+ string message = 1;
+}

native-image-examples/vertx-grpc-client/src/main/resources/META-INF/native-image/io.vertx/vertx-native-image-grpc-client-example/native-image.properties

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+Args = --initialize-at-build-time=io.netty,com.fasterxml.jackson,javax \
+ --initialize-at-run-time=io.netty.handler.codec.http.HttpObjectEncoder,io.netty.handler.codec.http.websocketx.WebSocket00FrameEncoder,io.netty.handler.codec.http2.DefaultHttp2FrameWriter,io.netty.handler.ssl.ReferenceCountedOpenSslServerContext,io.netty.handler.ssl.JdkNpnApplicationProtocolNegotiator,io.netty.handler.ssl.ReferenceCountedOpenSslEngine,io.netty.handler.ssl.ConscryptAlpnSslEngine,io.netty.handler.ssl.JettyNpnSslEngine,io.netty.handler.ssl.ReferenceCountedOpenSslClientContext,io.vertx.core.net.impl.transport.EpollTransport,io.vertx.core.net.impl.transport.KQueueTransport \
+ -H:+UseServiceLoaderFeature \
+ -H:IncludeResources=(META-INF)/.* \
+ -H:ReflectionConfigurationFiles=classes/${.}/reflection.json

native-image-examples/vertx-grpc-client/src/main/resources/META-INF/native-image/io.vertx/vertx-native-image-grpc-client-example/reflection.json

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+[
+ {
+ "name": "io.netty.channel.socket.nio.NioServerSocketChannel",
+ "methods": [
+ { "name": "<init>", "parameterTypes": [] }
+ ]
+ },
+ {
+ "name": "io.vertx.core.impl.launcher.commands.RunCommand",
+ "allDeclaredConstructors": true,
+ "allDeclaredMethods": true
+ },
+ {
+ "name": "io.vertx.core.impl.launcher.commands.VertxIsolatedDeployer",
+ "allDeclaredConstructors": true,
+ "allDeclaredMethods": true
+ },
+ {
+ "name": "java.lang.Long",
+ "allDeclaredConstructors": true
+ },
+ {
+ "name": "java.lang.Integer",
+ "allDeclaredConstructors": true
+ },
+
+ {
+ "name": "io.vertx.example.MainVerticle",
+ "allDeclaredConstructors": true,
+ "allDeclaredMethods": true
+ }
+]