feat: produce a no-dependencies shaded Mutiny jar

Ref: #1577

no-deps/pom.xml

@@ -0,0 +1,133 @@
+<?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>
+    <parent>
+        <groupId>io.smallrye.reactive</groupId>
+        <artifactId>mutiny-project</artifactId>
+        <version>999-SNAPSHOT</version>
+    </parent>
+
+    <artifactId>mutiny-no-deps</artifactId>
+    <name>SmallRye Mutiny - Shaded library</name>
+    <description>Variant of Mutiny with shaded dependencies</description>
+
+    <properties>
+        <revapi.skip>true</revapi.skip>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>io.smallrye.reactive</groupId>
+            <artifactId>mutiny</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-api</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-engine</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-shade-plugin</artifactId>
+                <version>${maven-shade-plugin.version}</version>
+                <configuration>
+                    <createSourcesJar>true</createSourcesJar>
+                    <shadeSourcesContent>true</shadeSourcesContent>
+                    <filters>
+                        <filter>
+                            <artifact>*:*</artifact>
+                            <excludes>
+                                <exclude>module-info.class</exclude>
+                                <exclude>META-INF/jandex.idx</exclude>
+                                <exclude>META-INF/MANIFEST.MF</exclude>
+                                <exclude>META-INF/maven/**</exclude>
+                            </excludes>
+                        </filter>
+                        <filter>
+                            <artifact>org.jctools:jctools-core</artifact>
+                            <excludes>
+                                <exclude>org/jctools/counters/**</exclude>
+                                <exclude>org/jctools/maps/**</exclude>
+                                <exclude>org/jctools/queues/unpadded/**</exclude>
+                            </excludes>
+                        </filter>
+                    </filters>
+                    <transformers>
+                        <transformer
+                                implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
+                            <manifestEntries></manifestEntries>
+                        </transformer>
+                    </transformers>
+                    <relocations>
+                        <relocation>
+                            <pattern>org.jctools</pattern>
+                            <shadedPattern>io.smallrye.mutiny.shaded.org.jctools</shadedPattern>
+                        </relocation>
+                        <relocation>
+                            <pattern>io.smallrye.common</pattern>
+                            <shadedPattern>io.smallrye.mutiny.shaded.io.smallrye.common</shadedPattern>
+                        </relocation>
+                    </relocations>
+                </configuration>
+                <executions>
+                    <execution>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>shade</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <groupId>io.smallrye</groupId>
+                <artifactId>jandex-maven-plugin</artifactId>
+                <configuration>
+                    <jar>${project.build.directory}/${project.build.finalName}.jar</jar>
+                    <includes>
+                        <include>io/smallrye/mutiny/**/*.class</include>
+                    </includes>
+                    <excludes>
+                        <exclude>io/smallrye/mutiny/shaded/**/*.class</exclude>
+                    </excludes>
+                </configuration>
+                <executions>
+                    <execution>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>jandex-jar</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <groupId>org.cyclonedx</groupId>
+                <artifactId>cyclonedx-maven-plugin</artifactId>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-failsafe-plugin</artifactId>
+                <version>${maven-failsafe-plugin.version}</version>
+                <executions>
+                    <execution>
+                        <goals>
+                            <goal>integration-test</goal>
+                            <goal>verify</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>

no-deps/src/main/java/io/smallrye/mutiny/nodeps/Empty.java

@@ -0,0 +1,8 @@
+package io.smallrye.mutiny.nodeps;
+
+/**
+ * This is used as a placeholder to force the maven-javadoc-plugin to create a javadoc jar.
+ * Yes, you read it right :-)
+ */
+public interface Empty {
+}

no-deps/src/test/java/io/smallrye/mutiny/nodeps/ShadingIT.java

@@ -0,0 +1,64 @@
+package io.smallrye.mutiny.nodeps;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+import java.time.Duration;
+import java.util.List;
+import java.util.Queue;
+
+import org.junit.jupiter.api.Test;
+
+import io.smallrye.mutiny.Multi;
+import io.smallrye.mutiny.helpers.queues.Queues;
+import io.smallrye.mutiny.subscription.BackPressureStrategy;
+
+public class ShadingIT {
+
+    @Test
+    public void check_shaded_classes() throws ClassNotFoundException {
+        Class.forName("io.smallrye.mutiny.shaded.org.jctools.queues.BaseLinkedQueue");
+        Class.forName("io.smallrye.mutiny.shaded.org.jctools.queues.atomic.unpadded.BaseLinkedAtomicUnpaddedQueue");
+        Class.forName("io.smallrye.mutiny.shaded.io.smallrye.common.annotation.CheckReturnValue");
+    }
+
+    @Test
+    public void mpsc_queue_factory() {
+        Queue<String> queue = Queues.createMpscArrayQueue(256);
+
+        queue.add("foo");
+        queue.add("bar");
+        assertEquals("foo", queue.poll());
+        assertEquals("bar", queue.poll());
+        assertNull(queue.poll());
+
+        assertTrue(queue.getClass().getCanonicalName().contains("shaded"));
+    }
+
+    @Test
+    public void spsc_queue_factory() {
+        Queue<String> queue = Queues.createSpscArrayQueue(256);
+
+        queue.add("foo");
+        queue.add("bar");
+        assertEquals("foo", queue.poll());
+        assertEquals("bar", queue.poll());
+        assertNull(queue.poll());
+
+        assertTrue(queue.getClass().getCanonicalName().contains("shaded"));
+    }
+
+    @Test
+    public void multi_emitter() {
+        Multi<Integer> multi = Multi.createFrom().emitter(emitter -> {
+            for (int i = 0; i < 100; i++) {
+                emitter.emit(i);
+            }
+            emitter.complete();
+        }, BackPressureStrategy.BUFFER);
+
+        List<Integer> suite = multi.collect().asList().await().atMost(Duration.ofSeconds(5));
+        assertEquals(100, suite.size());
+        assertEquals(0, suite.get(0));
+        assertEquals(99, suite.get(99));
+    }
+}

pom.xml

@@ -74,6 +74,7 @@
         <module>bom</module>
         <module>math</module>
         <module>workshop-examples</module>
+        <module>no-deps</module>
     </modules>
 
     <properties>
@@ -124,6 +125,8 @@
         <find-and-replace-maven-plugin.version>1.1.0</find-and-replace-maven-plugin.version>
         <jreleaser-maven-plugin.version>1.12.0</jreleaser-maven-plugin.version>
         <cyclonedx-maven-plugin.version>2.8.0</cyclonedx-maven-plugin.version>
+        <maven-shade-plugin.version>3.5.3</maven-shade-plugin.version>
+        <maven-failsafe-plugin.version>3.2.5</maven-failsafe-plugin.version>
     </properties>
 
     <dependencyManagement>