From ba05872a01e55c89c2a73c6b89772fe2228fdbf4 Mon Sep 17 00:00:00 2001
From: Oleg Zhurakousky <ozhurakousky@pivotal.io>
Date: Mon, 12 Aug 2019 10:19:06 +0200
Subject: [PATCH] Added sample app with SCF on classpath

---
 .../src/it/bootapp-with-scf/pom.xml           | 71 +++++++++++++++++++
 .../example/SimpleFunctionAppApplication.java | 57 +++++++++++++++
 .../function/example/UpperCaseFunction.java   | 13 ++++
 .../deployer/FunctionDeployerTests.java       | 21 ++++++
 4 files changed, 162 insertions(+)
 create mode 100644 spring-cloud-function-deployer-new/src/it/bootapp-with-scf/pom.xml
 create mode 100644 spring-cloud-function-deployer-new/src/it/bootapp-with-scf/src/main/java/function/example/SimpleFunctionAppApplication.java
 create mode 100644 spring-cloud-function-deployer-new/src/it/bootapp-with-scf/src/main/java/function/example/UpperCaseFunction.java

diff --git a/spring-cloud-function-deployer-new/src/it/bootapp-with-scf/pom.xml b/spring-cloud-function-deployer-new/src/it/bootapp-with-scf/pom.xml
new file mode 100644
index 000000000..ce10bf055
--- /dev/null
+++ b/spring-cloud-function-deployer-new/src/it/bootapp-with-scf/pom.xml
@@ -0,0 +1,71 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+		 xmlns="http://maven.apache.org/POM/4.0.0"
+		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+
+	<groupId>function.example</groupId>
+	<artifactId>bootapp-with-scf</artifactId>
+	<version>0.0.1.BUILD-SNAPSHOT</version>
+	<packaging>jar</packaging>
+
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>2.2.0.BUILD-SNAPSHOT</version>
+		<relativePath/>
+	</parent>
+
+	<properties>
+		<java.version>1.8</java.version>
+		<spring-cloud-function.version>3.0.0.BUILD-SNAPSHOT</spring-cloud-function.version>
+		<wrapper.version>1.0.17.RELEASE</wrapper.version>
+	</properties>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.cloud</groupId>
+			<artifactId>spring-cloud-function-context</artifactId>
+			<version>${spring-cloud-function.version}</version>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+				<configuration>
+					<classifier>exec</classifier>
+				</configuration>
+			</plugin>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-dependency-plugin</artifactId>
+				<executions>
+					<execution>
+						<id>unpack</id>
+						<phase>package</phase>
+						<goals>
+							<goal>unpack</goal>
+						</goals>
+						<configuration>
+							<artifactItems>
+								<artifactItem>
+									<groupId>${project.groupId}</groupId>
+									<artifactId>${project.artifactId}</artifactId>
+									<version>${project.version}</version>
+									<classifier>exec</classifier>
+								</artifactItem>
+							</artifactItems>
+						</configuration>
+					</execution>
+				</executions>
+			</plugin>
+		</plugins>
+	</build>
+</project>
diff --git a/spring-cloud-function-deployer-new/src/it/bootapp-with-scf/src/main/java/function/example/SimpleFunctionAppApplication.java b/spring-cloud-function-deployer-new/src/it/bootapp-with-scf/src/main/java/function/example/SimpleFunctionAppApplication.java
new file mode 100644
index 000000000..ed8f694ef
--- /dev/null
+++ b/spring-cloud-function-deployer-new/src/it/bootapp-with-scf/src/main/java/function/example/SimpleFunctionAppApplication.java
@@ -0,0 +1,57 @@
+package function.example;
+
+import java.util.function.Function;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Bean;
+
+@SpringBootApplication
+public class SimpleFunctionAppApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(SimpleFunctionAppApplication.class, args);
+	}
+
+	@Bean
+	public Function<String, String> uppercase() {
+		System.out.println("==> CREATING 'uppercase' FUNCTION bean");
+		return new UpperCaseFunction();
+	}
+
+	@Bean
+	public Function<Person, Person> uppercasePerson() {
+		System.out.println("==> CREATING 'uppercasePerson' FUNCTION bean");
+		return person -> {
+			Person p = new Person();
+			p.setId(person.getId());
+			p.setName(person.getName().toUpperCase());
+			return p;
+		};
+	}
+
+
+
+	public static class Person {
+		private String name;
+
+		private int id;
+
+		public String getName() {
+			return name;
+		}
+
+		public void setName(String name) {
+			this.name = name;
+		}
+
+		public int getId() {
+			return id;
+		}
+
+		public void setId(int id) {
+			this.id = id;
+		}
+
+	}
+}
diff --git a/spring-cloud-function-deployer-new/src/it/bootapp-with-scf/src/main/java/function/example/UpperCaseFunction.java b/spring-cloud-function-deployer-new/src/it/bootapp-with-scf/src/main/java/function/example/UpperCaseFunction.java
new file mode 100644
index 000000000..859a54a58
--- /dev/null
+++ b/spring-cloud-function-deployer-new/src/it/bootapp-with-scf/src/main/java/function/example/UpperCaseFunction.java
@@ -0,0 +1,13 @@
+package function.example;
+
+import java.util.function.Function;
+
+public class UpperCaseFunction implements Function<String, String> {
+
+	@Override
+	public String apply(String value) {
+		System.out.println("Uppercasing " + value);
+		return value.toUpperCase();
+	}
+
+}
diff --git a/spring-cloud-function-deployer-new/src/test/java/org/springframework/cloud/function/deployer/FunctionDeployerTests.java b/spring-cloud-function-deployer-new/src/test/java/org/springframework/cloud/function/deployer/FunctionDeployerTests.java
index 94f532ace..53f79d3ec 100644
--- a/spring-cloud-function-deployer-new/src/test/java/org/springframework/cloud/function/deployer/FunctionDeployerTests.java
+++ b/spring-cloud-function-deployer-new/src/test/java/org/springframework/cloud/function/deployer/FunctionDeployerTests.java
@@ -108,6 +108,27 @@ public class FunctionDeployerTests {
 		assertThat(new String(result.getPayload(), StandardCharsets.UTF_8)).isEqualTo("\"BOB\"");
 	}
 
+	/*
+	 * Target function:
+	 *
+	 * @Bean public Function<String, String> uppercase()
+	 *
+	 * this contains SCF on classpath
+	 */
+	@Test
+	public void testWithMainAndStartClassAndSpringConfigurationAndSCFOnClasspath() throws Exception {
+		String[] args = new String[] {
+				"--spring.cloud.function.location=target/it/bootapp-with-scf/target/bootapp-with-scf-0.0.1.BUILD-SNAPSHOT-exec.jar",
+				"--spring.cloud.function.function-name=uppercase" };
+		ApplicationContext context = SpringApplication.run(FunctionDeployerConfiguration.class, args);
+		FunctionCatalog catalog = context.getBean(FunctionCatalog.class);
+		Function<Message<byte[]>, Message<byte[]>> function = catalog.lookup("uppercase", "application/json");
+
+		Message<byte[]> result = function
+				.apply(MessageBuilder.withPayload("\"bob\"".getBytes(StandardCharsets.UTF_8)).build());
+		assertThat(new String(result.getPayload(), StandardCharsets.UTF_8)).isEqualTo("\"BOB\"");
+	}
+
 	/*
 	 * Target function:
 	 *