├── README.md
├── pom.xml
└── src
    ├── main
        ├── java
        │   └── com
        │   │   └── javatechie
        │   │       └── aws
        │   │           └── lambda
        │   │               ├── OrderHandler.java
        │   │               ├── SpringbootAwsLambdaApplication.java
        │   │               ├── domain
        │   │                   └── Order.java
        │   │               └── respository
        │   │                   └── OrderDao.java
        └── resources
        │   └── application.properties
    └── test
        └── java
            └── com
                └── javatechie
                    └── aws
                        └── lambda
                            └── SpringbootAwsLambdaApplicationTests.java


/README.md:
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 1 | # springboot-aws-lambda
 2 | AWS Lambda is a serverless computing service provided by Amazon to reduce the configuration of servers, OS .
 3 | 
 4 | AWS Lambda lets you run code without provisioning or managing servers—it scales automatically and only charges for the time your code is running
 5 | 
 6 | ## Spring Cloud Function : 
 7 | https://www.youtube.com/watch?v=euLs1SbYKzE&t=807s
 8 | 
 9 | 
10 | ## Dependency (Required)
11 | 
12 | ```javascript
13 | 		<dependency>
14 | 			<groupId>org.springframework.cloud</groupId>
15 | 			<artifactId>spring-cloud-function-adapter-aws</artifactId>
16 | 		</dependency>
17 | 		<dependency>
18 | 			<groupId>com.amazonaws</groupId>
19 | 			<artifactId>aws-lambda-java-events</artifactId>
20 | 			<version>2.0.2</version>
21 | 		</dependency>
22 | 		<dependency>
23 | 			<groupId>com.amazonaws</groupId>
24 | 			<artifactId>aws-lambda-java-core</artifactId>
25 | 			<version>1.1.0</version>
26 | 		</dependency>
27 | ```
28 | 
29 | 
30 | 
31 | ## Plugins (It will helps to downstream your jar size)
32 | 
33 | ```javascript
34 | 		<plugins>
35 | 			<plugin>
36 | 				<groupId>org.apache.maven.plugins</groupId>
37 | 				<artifactId>maven-deploy-plugin</artifactId>
38 | 				<configuration>
39 | 					<skip>true</skip>
40 | 				</configuration>
41 | 			</plugin>
42 | 			<plugin>
43 | 				<groupId>org.springframework.boot</groupId>
44 | 				<artifactId>spring-boot-maven-plugin</artifactId>
45 | 				<dependencies>
46 | 					<dependency>
47 | 						<groupId>org.springframework.boot.experimental</groupId>
48 | 						<artifactId>spring-boot-thin-layout</artifactId>
49 | 						<version>1.0.17.RELEASE</version>
50 | 					</dependency>
51 | 				</dependencies>
52 | 			</plugin>
53 | 			<plugin>
54 | 				<groupId>org.apache.maven.plugins</groupId>
55 | 				<artifactId>maven-shade-plugin</artifactId>
56 | 				<version>3.2.4</version>
57 | 				<configuration>
58 | 					<createDependencyReducedPom>false</createDependencyReducedPom>
59 | 					<shadedArtifactAttached>true</shadedArtifactAttached>
60 | 					<shadedClassifierName>aws</shadedClassifierName>
61 | 				</configuration>
62 | 			</plugin>
63 | 		</plugins>
64 | ```
65 | 
66 | 


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/pom.xml:
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  1 | <?xml version="1.0" encoding="UTF-8"?>
  2 | <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  3 |          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
  4 |     <modelVersion>4.0.0</modelVersion>
  5 |     <parent>
  6 |         <groupId>org.springframework.boot</groupId>
  7 |         <artifactId>spring-boot-starter-parent</artifactId>
  8 |         <version>2.3.1.RELEASE</version>
  9 |         <relativePath/> <!-- lookup parent from repository -->
 10 |     </parent>
 11 |     <groupId>com.javatechie</groupId>
 12 |     <artifactId>springboot-aws-lambda</artifactId>
 13 |     <version>0.0.1-SNAPSHOT</version>
 14 |     <name>springboot-aws-lambda</name>
 15 |     <description>Demo project for Spring Boot</description>
 16 | 
 17 |     <properties>
 18 |         <java.version>1.8</java.version>
 19 |         <spring-cloud.version>Hoxton.SR6</spring-cloud.version>
 20 |         <wrapper.version>1.0.17.RELEASE</wrapper.version>
 21 |     </properties>
 22 | 
 23 |     <dependencies>
 24 |         <dependency>
 25 |             <groupId>org.springframework.boot</groupId>
 26 |             <artifactId>spring-boot-starter</artifactId>
 27 |         </dependency>
 28 | 
 29 |         <dependency>
 30 |             <groupId>org.springframework.cloud</groupId>
 31 |             <artifactId>spring-cloud-function-adapter-aws</artifactId>
 32 |         </dependency>
 33 |         <dependency>
 34 |             <groupId>com.amazonaws</groupId>
 35 |             <artifactId>aws-lambda-java-events</artifactId>
 36 |             <version>2.0.2</version>
 37 |         </dependency>
 38 |         <dependency>
 39 |             <groupId>com.amazonaws</groupId>
 40 |             <artifactId>aws-lambda-java-core</artifactId>
 41 |             <version>1.1.0</version>
 42 |         </dependency>
 43 |         <dependency>
 44 |             <groupId>org.projectlombok</groupId>
 45 |             <artifactId>lombok</artifactId>
 46 |             <optional>true</optional>
 47 |         </dependency>
 48 |         <dependency>
 49 |             <groupId>org.springframework.boot</groupId>
 50 |             <artifactId>spring-boot-starter-test</artifactId>
 51 |             <scope>test</scope>
 52 |             <exclusions>
 53 |                 <exclusion>
 54 |                     <groupId>org.junit.vintage</groupId>
 55 |                     <artifactId>junit-vintage-engine</artifactId>
 56 |                 </exclusion>
 57 |             </exclusions>
 58 |         </dependency>
 59 |     </dependencies>
 60 | 
 61 |     <dependencyManagement>
 62 |         <dependencies>
 63 |             <dependency>
 64 |                 <groupId>org.springframework.cloud</groupId>
 65 |                 <artifactId>spring-cloud-dependencies</artifactId>
 66 |                 <version>${spring-cloud.version}</version>
 67 |                 <type>pom</type>
 68 |                 <scope>import</scope>
 69 |             </dependency>
 70 |         </dependencies>
 71 |     </dependencyManagement>
 72 | 
 73 |     <build>
 74 |         <plugins>
 75 |             <plugin>
 76 |                 <groupId>org.apache.maven.plugins</groupId>
 77 |                 <artifactId>maven-deploy-plugin</artifactId>
 78 |                 <configuration>
 79 |                     <skip>true</skip>
 80 |                 </configuration>
 81 |             </plugin>
 82 |             <plugin>
 83 |                 <groupId>org.springframework.boot</groupId>
 84 |                 <artifactId>spring-boot-maven-plugin</artifactId>
 85 |                 <dependencies>
 86 |                     <dependency>
 87 |                         <groupId>org.springframework.boot.experimental</groupId>
 88 |                         <artifactId>spring-boot-thin-layout</artifactId>
 89 |                         <version>${wrapper.version}</version>
 90 |                     </dependency>
 91 |                 </dependencies>
 92 |             </plugin>
 93 |             <plugin>
 94 |                 <groupId>org.apache.maven.plugins</groupId>
 95 |                 <artifactId>maven-shade-plugin</artifactId>
 96 |                 <version>3.2.4</version>
 97 |                 <configuration>
 98 |                     <createDependencyReducedPom>false</createDependencyReducedPom>
 99 |                     <shadedArtifactAttached>true</shadedArtifactAttached>
100 |                     <shadedClassifierName>aws</shadedClassifierName>
101 |                 </configuration>
102 |             </plugin>
103 |         </plugins>
104 |         <finalName>springboot-aws-lambda</finalName>
105 |     </build>
106 | 
107 | </project>
108 | 


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/src/main/java/com/javatechie/aws/lambda/OrderHandler.java:
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1 | package com.javatechie.aws.lambda;
2 | 
3 | import org.springframework.cloud.function.adapter.aws.SpringBootRequestHandler;
4 | 
5 | public class OrderHandler extends SpringBootRequestHandler<String,Object> {
6 | }
7 | 


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/src/main/java/com/javatechie/aws/lambda/SpringbootAwsLambdaApplication.java:
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 1 | package com.javatechie.aws.lambda;
 2 | 
 3 | import com.javatechie.aws.lambda.domain.Order;
 4 | import com.javatechie.aws.lambda.respository.OrderDao;
 5 | import org.springframework.beans.factory.annotation.Autowired;
 6 | import org.springframework.boot.SpringApplication;
 7 | import org.springframework.boot.autoconfigure.SpringBootApplication;
 8 | import org.springframework.context.annotation.Bean;
 9 | 
10 | import java.util.List;
11 | import java.util.function.Function;
12 | import java.util.function.Supplier;
13 | import java.util.stream.Collectors;
14 | 
15 | @SpringBootApplication
16 | public class SpringbootAwsLambdaApplication {
17 | 
18 |     @Autowired
19 |     private OrderDao orderDao;
20 | 
21 |     @Bean
22 |     public Supplier<List<Order>> orders() {
23 |         return () -> orderDao.buildOrders();
24 |     }
25 | 
26 |     @Bean
27 |     public Function<String, List<Order>> findOrderByName() {
28 |         return (input) -> orderDao.buildOrders().stream().filter(order -> order.getName().equals(input)).collect(Collectors.toList());
29 |     }
30 | 
31 | 
32 |     public static void main(String[] args) {
33 |         SpringApplication.run(SpringbootAwsLambdaApplication.class, args);
34 |     }
35 | 
36 | }
37 | 


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/src/main/java/com/javatechie/aws/lambda/domain/Order.java:
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 1 | package com.javatechie.aws.lambda.domain;
 2 | 
 3 | import lombok.AllArgsConstructor;
 4 | import lombok.Data;
 5 | import lombok.NoArgsConstructor;
 6 | 
 7 | @Data
 8 | @AllArgsConstructor
 9 | @NoArgsConstructor
10 | public class Order {
11 | 
12 |     private int id;
13 |     private String name;
14 |     private double price;
15 |     private int quantity;
16 | }
17 | 


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/src/main/java/com/javatechie/aws/lambda/respository/OrderDao.java:
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 1 | package com.javatechie.aws.lambda.respository;
 2 | 
 3 | import com.javatechie.aws.lambda.domain.Order;
 4 | import org.springframework.stereotype.Repository;
 5 | 
 6 | import java.util.List;
 7 | import java.util.stream.Collectors;
 8 | import java.util.stream.Stream;
 9 | 
10 | @Repository
11 | public class OrderDao {
12 | 
13 | 
14 |     public List<Order> buildOrders(){
15 |         return Stream.of(
16 |                 new Order(101, "Mobile", 20000, 1),
17 |                 new Order(102, "Book", 999, 2),
18 |                 new Order(278, "Book", 1466, 3),
19 |                 new Order(953, "Jeans", 4499, 1)
20 |         ).collect(Collectors.toList());
21 |     }
22 | }
23 | 


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/src/main/resources/application.properties:
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1 | 
2 | 


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/src/test/java/com/javatechie/aws/lambda/SpringbootAwsLambdaApplicationTests.java:
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 1 | package com.javatechie.aws.lambda;
 2 | 
 3 | import org.junit.jupiter.api.Test;
 4 | import org.springframework.boot.test.context.SpringBootTest;
 5 | 
 6 | @SpringBootTest
 7 | class SpringbootAwsLambdaApplicationTests {
 8 | 
 9 | 	@Test
10 | 	void contextLoads() {
11 | 	}
12 | 
13 | }
14 | 


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