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Add layer-java example app
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‎sample-apps/layer-java/function/pom.xml

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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.example</groupId>
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<artifactId>layer-java-function</artifactId>
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<packaging>jar</packaging>
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<version>1.0-SNAPSHOT</version>
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<name>layer-java-function</name>
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<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<maven.compiler.source>21</maven.compiler.source>
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<maven.compiler.target>21</maven.compiler.target>
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</properties>
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<dependencies>
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<dependency>
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<groupId>com.example</groupId>
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<artifactId>layer-java-layer</artifactId>
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<version>1.0-SNAPSHOT</version>
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<scope>provided</scope>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<version>3.13.0</version>
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<configuration>
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<source>21</source>
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<target>21</target>
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<release>21</release>
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</configuration>
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</plugin>
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<!-- Use the maven-shade-plugin if you need additional dependencies for
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your function that aren't covered by the shared layer.
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-shade-plugin</artifactId>
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<version>3.5.2</version>
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<configuration>
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<createDependencyReducedPom>false</createDependencyReducedPom>
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</configuration>
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<executions>
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<execution>
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<phase>package</phase>
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<goals>
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<goal>shade</goal>
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</goals>
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</execution>
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</executions>
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</plugin>
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-->
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</plugins>
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</build>
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</project>

‎sample-apps/layer-java/function/src/main/java/example/F1Car.java

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package example;
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import com.fasterxml.jackson.annotation.JsonCreator;
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import com.fasterxml.jackson.annotation.JsonProperty;
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public class F1Car {
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private String team;
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private String driver;
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@JsonCreator
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public F1Car(@JsonProperty("team") String team,
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@JsonProperty("driver") String driver) {
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this.team = team;
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this.driver = driver;
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}
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public String getTeam() {
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return team;
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}
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public void setTeam(String team) {
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this.team = team;
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}
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public String getDriver() {
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return driver;
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}
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public void setDriver(String driver) {
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this.driver = driver;
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}
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}

‎sample-apps/layer-java/function/src/main/java/example/Handler.java

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package example;
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import com.amazonaws.services.lambda.runtime.Context;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import java.io.IOException;
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import java.util.Map;
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public class Handler {
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public String handleRequest(Map<String, String> input, Context context) throws IOException {
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// Parse the input JSON
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System.out.println(input);
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ObjectMapper objectMapper = new ObjectMapper();
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F1Car f1Car = objectMapper.readValue(objectMapper.writeValueAsString(input), F1Car.class);
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StringBuilder finalString = new StringBuilder();
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finalString.append(f1Car.getDriver());
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finalString.append(" is a driver for team ");
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finalString.append(f1Car.getTeam());
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return finalString.toString();
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}
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}

‎sample-apps/layer-java/layer/1-install.sh

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mvn clean install

‎sample-apps/layer-java/layer/2-package.sh

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mkdir java
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mkdir java/lib
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cp -r target/layer-java-layer-1.0-SNAPSHOT.jar java/lib/
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zip -r layer_content.zip java

‎sample-apps/layer-java/layer/pom.xml

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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.example</groupId>
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<artifactId>layer-java-layer</artifactId>
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<packaging>jar</packaging>
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<version>1.0-SNAPSHOT</version>
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<name>layer-java-layer</name>
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<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<maven.compiler.source>21</maven.compiler.source>
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<maven.compiler.target>21</maven.compiler.target>
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</properties>
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<dependencies>
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<dependency>
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<groupId>com.amazonaws</groupId>
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<artifactId>aws-lambda-java-core</artifactId>
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<version>1.2.3</version>
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</dependency>
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<dependency>
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<groupId>com.fasterxml.jackson.core</groupId>
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<artifactId>jackson-databind</artifactId>
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<version>2.17.0</version>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<version>3.13.0</version>
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<configuration>
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<source>21</source>
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<target>21</target>
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<release>21</release>
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</configuration>
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</plugin>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-shade-plugin</artifactId>
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<version>3.5.2</version>
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<configuration>
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<createDependencyReducedPom>false</createDependencyReducedPom>
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</configuration>
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<executions>
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<execution>
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<phase>package</phase>
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<goals>
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<goal>shade</goal>
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</goals>
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</execution>
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</executions>
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</plugin>
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</plugins>
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</build>
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</project>

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