BAEL-7445, add custom task

gradle-modules/gradle-customization/gradle-avro/build.gradle

@@ -1,3 +1,9 @@
+buildscript {
+    dependencies {
+        classpath libs.avro.tools
+    }
+}
+
 plugins {
     id 'java'
     alias libs.plugins.avro
@@ -16,9 +22,41 @@ dependencies {
 
 }
 
+import org.apache.avro.tool.SpecificCompilerTool
+
 sourceCompatibility = JavaVersion.VERSION_21
 targetCompatibility = JavaVersion.VERSION_21
 
+def avroSchemasDir = "src/main/custom"
+def avroCodeGenerationDir = "build/generated-main-avro-custom-java"
+
+// Add the generated Avro Java code to the Gradle source files.
+sourceSets.main.java.srcDirs += [avroCodeGenerationDir]
+
+tasks.register('customAvroCodeGeneration') {
+    // Define the task inputs and outputs for the Gradle up-to-date checks.
+    inputs.dir(avroSchemasDir)
+    outputs.dir(avroCodeGenerationDir)
+    // The Avro code generation logs to the standard streams. Redirect the standard streams to the Gradle log.
+    logging.captureStandardOutput(LogLevel.INFO);
+    logging.captureStandardError(LogLevel.ERROR)
+    doLast {
+        // Run the Avro code generation.
+        new SpecificCompilerTool().run(System.in, System.out, System.err, List.of(
+                "-encoding", "UTF-8",
+                "-string",
+                "-fieldVisibility", "private",
+                "-noSetters",
+                "schema", "$projectDir/$avroSchemasDir".toString(), "$projectDir/$avroCodeGenerationDir".toString()
+        ))
+    }
+}
+
+tasks.withType(JavaCompile).configureEach {
+    // Make Java compilation tasks depend on the Avro code generation task.
+    dependsOn('customAvroCodeGeneration')
+}
+
 tasks.named('test') {
     // Use JUnit Platform for unit tests.
     useJUnitPlatform()

gradle-modules/gradle-customization/gradle-avro/gradle/libs.versions.toml

@@ -3,10 +3,12 @@
 
 [versions]
 junit-jupiter = "5.10.0"
+avro = "1.11.0"
 
 [libraries]
 junit-jupiter = { module = "org.junit.jupiter:junit-jupiter", version.ref = "junit-jupiter" }
-avro = {module = "org.apache.avro:avro", version = "1.11.0"}
+avro = {module = "org.apache.avro:avro", version.ref = "avro"}
+avro-tools = {module = "org.apache.avro:avro-tools", version.ref = "avro"}
 
 [plugins]
 avro = { id = "com.github.davidmc24.gradle.plugin.avro", version = "1.9.1" }

gradle-modules/gradle-customization/gradle-avro/src/main/avro/user.avsc

@@ -1,10 +1,19 @@
 {
-    "type": "record",
-    "name": "User",
-    "namespace": "com.example",
-    "fields": [
-        { "name": "firstName", "type": "string" },
-        { "name": "lastName", "type": "string" },
-        { "name": "phoneNumber", "type": "string" }
-    ]
+  "type": "record",
+  "name": "User",
+  "namespace": "avro",
+  "fields": [
+    {
+      "name": "firstName",
+      "type": "string"
+    },
+    {
+      "name": "lastName",
+      "type": "string"
+    },
+    {
+      "name": "phoneNumber",
+      "type": "string"
+    }
+  ]
 }

gradle-modules/gradle-customization/gradle-avro/src/main/custom/Pet.avsc

@@ -0,0 +1,11 @@
+{
+  "type": "record",
+  "name": "Pet",
+  "namespace": "custom.avro",
+  "fields": [
+    { "name": "petId", "type": "string" },
+    { "name": "name", "type": "string" },
+    { "name": "species", "type": "string" },
+    { "name": "age", "type": "int" }
+  ]
+}

gradle-modules/gradle-customization/gradle-avro/src/test/java/com.baeldung.avro/AvroCodeGenerationUnitTest.java

@@ -1,6 +1,7 @@
 package com.baeldung.avro;
 
-import com.example.User;
+import avro.User;
+import custom.avro.Pet;
 import org.junit.jupiter.api.Test;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
@@ -8,7 +9,7 @@ import static org.junit.jupiter.api.Assertions.assertEquals;
 public class AvroCodeGenerationUnitTest {
 
     @Test
-    void givenUserData_whenObjectCreated_thenDataShouldMatch() {
+    void givenUserData_whenJavaClassGeneratedWithPlugin_thenDataShouldMatch() {
         final String firstName = "John";
         final String lastName = "Doe";
         final String phoneNumber = "+380659443235";
@@ -23,4 +24,25 @@ public class AvroCodeGenerationUnitTest {
         assertEquals(lastName, user.getLastName());
         assertEquals(phoneNumber, user.getPhoneNumber());
     }
+
+    @Test
+    void givenUserData_whenJavaClassGeneratedWithTask_thenDataShouldMatch() {
+        final String petId = "123";
+        final String name = "Fluffy";
+        final String species = "Cat";
+        final int age = 3;
+
+        Pet pet = Pet.newBuilder()
+                .setPetId(petId)
+                .setName(name)
+                .setSpecies(species)
+                .setAge(age)
+                .build();
+
+        // Assertions to verify the values
+        assertEquals(petId, pet.getPetId());
+        assertEquals(name, pet.getName());
+        assertEquals(species, pet.getSpecies());
+        assertEquals(age, pet.getAge());
+    }
 }