19.0.2.7.1# AWS Lambda Java 19 Custom Runtime
Based on original work from Mark Sailes: lambda-java17-layer
With a few differences:
- Support for
Java 19on architectureamd64andarm64 - Based on AWS Corretto 19 build of OpenJDK
- The maven build create 2 artifacts for each architecture
- The first part of the version is corresponding to the corretto version
The simplest way to bring the layer zip is to use the maven dependency plugin like this:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>3.2.0</version>
<executions>
<execution>
<id>copy</id>
<phase>package</phase>
<goals>
<goal>copy</goal>
</goals>
</execution>
</executions>
<configuration>
<artifactItems>
<artifactItem>
<groupId>io.microlam</groupId>
<artifactId>lambda-java19-layer</artifactId>
<version>19.0.2.7.1</version>
<classifier>${java19layer.arch}</classifier>
<type>zip</type>
</artifactItem>
</artifactItems>
<outputDirectory>${project.build.directory}</outputDirectory>
<overWriteReleases>false</overWriteReleases>
<overWriteSnapshots>true</overWriteSnapshots>
</configuration>
</plugin>Where property java19layer.arch may be amd64 or arm64.
Then the simplest way to deploy it to AWS is to use the CDK:
//Choose your architecture
Architecture architecture = Architecture.X86_64; // Architecture.ARM_64 or Architecture.X86_64
//Do not modify this
String arch = (architecture == Architecture.ARM_64)?"arm64":"amd64";
LayerVersion java19layer = new LayerVersion(this, "Java19Layer-"+ arch, LayerVersionProps.builder()
.layerVersionName("Java19Layer-" + arch)
.description("Java 19 " + arch)
.compatibleRuntimes(Arrays.asList(software.amazon.awscdk.services.lambda.Runtime.PROVIDED_AL2))
.code(Code.fromAsset("target/lambda-java19-layer-19.0.2.7.1-"+ arch + ".zip"))
.build());
Function handlerBuilder = Function.Builder.create(this, "SimpleLambda")
.functionName("SimpleLambda")
.architecture(architecture)
.runtime(software.amazon.awscdk.services.lambda.Runtime.PROVIDED_AL2)
.layers(Collections.singletonList(java19layer))
.handler("example.lambda.SimpleLambda")
.memorySize(512)
.timeout(Duration.seconds(20))
.code(Code.fromAsset("target/simple-lambda-1.0-SNAPSHOT-aws-lambda.zip")).build();
