BAEL-3091: The Prototype Pattern in Java (changed code based on valid comments from a reader)

spring-cloud/spring-cloud-task/springcloudtasksink/src/main/java/com/baeldung/SpringCloudTaskFinal/SpringCloudTaskSinkApplication.java

@@ -0,0 +1,16 @@
+package com.baeldung.SpringCloudTaskFinal;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.cloud.task.launcher.annotation.EnableTaskLauncher;
+
+@SpringBootApplication
+@EnableTaskLauncher
+public class SpringCloudTaskSinkApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(
+            SpringCloudTaskSinkApplication.class, args);
+    }
+
+}

spring-cloud/spring-cloud-task/springcloudtasksink/src/main/resources/application.properties

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+maven.remoteRepositories.springRepo.url=https://repo.spring.io/libs-snapshot

spring-cloud/spring-cloud-task/springcloudtasksink/src/main/resources/logback.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>

spring-cloud/spring-cloud-task/springcloudtasksink/src/test/java/com/baeldung/SpringCloudTaskFinal/SpringCloudTaskSinkApplicationIntegrationTest.java

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+package com.baeldung.SpringCloudTaskFinal;
+
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.Map;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.ArgumentCaptor;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.cloud.deployer.spi.core.AppDeploymentRequest;
+import org.springframework.cloud.deployer.spi.task.TaskLauncher;
+import org.springframework.cloud.stream.messaging.Sink;
+import org.springframework.cloud.task.launcher.TaskLaunchRequest;
+import org.springframework.context.ApplicationContext;
+import org.springframework.messaging.support.GenericMessage;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+import static org.mockito.Mockito.verify;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(
+    classes = SpringCloudTaskSinkApplication.class)
+public class SpringCloudTaskSinkApplicationIntegrationTest {
+
+    @Autowired
+    ApplicationContext context;
+
+    @Autowired
+    private Sink sink;
+
+    @Test
+    public void testTaskLaunch() throws IOException {
+
+        TaskLauncher taskLauncher =
+            context.getBean(TaskLauncher.class);
+
+        Map<String, String> prop = new HashMap<String, String>();
+        prop.put("server.port", "0");
+        TaskLaunchRequest request = new TaskLaunchRequest(
+            "maven://org.springframework.cloud.task.app:"
+                + "timestamp-task:jar:1.0.1.RELEASE", null,
+            prop,
+            null, null);
+        GenericMessage<TaskLaunchRequest> message = new GenericMessage<TaskLaunchRequest>(
+            request);
+        this.sink.input().send(message);
+
+        ArgumentCaptor<AppDeploymentRequest> deploymentRequest = ArgumentCaptor
+            .forClass(AppDeploymentRequest.class);
+
+        verify(taskLauncher).launch(
+            deploymentRequest.capture());
+
+        AppDeploymentRequest actualRequest = deploymentRequest
+            .getValue();
+
+        // Verifying the co-ordinate of launched Task here.
+        assertTrue(actualRequest.getCommandlineArguments()
+            .isEmpty());
+        assertEquals("0", actualRequest.getDefinition()
+            .getProperties().get("server.port"));
+        assertTrue(actualRequest
+            .getResource()
+            .toString()
+            .contains(
+                "org.springframework.cloud.task.app:timestamp-task:jar:1.0.1.RELEASE"));
+    }
+}

spring-cloud/spring-cloud-task/springcloudtasksink/src/test/java/com/baeldung/SpringCloudTaskFinal/TaskSinkConfiguration.java

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+package com.baeldung.SpringCloudTaskFinal;
+
+import static org.mockito.Mockito.mock;
+
+import org.springframework.cloud.deployer.spi.task.TaskLauncher;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+
+@Configuration
+public class TaskSinkConfiguration {
+
+    @Bean
+    public TaskLauncher taskLauncher() {
+        return  mock(TaskLauncher.class);
+  }
+    
+}

spring-cloud/spring-cloud-task/springcloudtasksink/src/test/java/org/baeldung/SpringContextIntegrationTest.java

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+package org.baeldung;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import com.baeldung.SpringCloudTaskFinal.SpringCloudTaskSinkApplication;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(classes = SpringCloudTaskSinkApplication.class)
+public class SpringContextIntegrationTest {
+
+    @Test
+    public void whenSpringContextIsBootstrapped_thenNoExceptions() {
+    }
+}

spring-cloud/spring-cloud-task/springcloudtasksink/src/test/java/org/baeldung/SpringContextTest.java

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+package org.baeldung;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import com.baeldung.SpringCloudTaskFinal.SpringCloudTaskSinkApplication;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(classes = SpringCloudTaskSinkApplication.class)
+public class SpringContextTest {
+
+    @Test
+    public void whenSpringContextIsBootstrapped_thenNoExceptions() {
+    }
+}