Quarkus-Camel-Lambda Project

This project uses the following framework

• Quarkus - The Supersonic Subatomic Java Framework for building Cloud Native Applications
• Apache Camel - The Swiss Army Knife of Enterprise Application Integration for integrating heterogeneous systems
• AWS Lambda - Event-driven, serverless computing platform provided by Amazon as a part of Amazon Web Services

If you want to learn more about

• Quarkus - please visit its website: https://quarkus.io/
• Apache Camel - please visit its website: https://camel.apache.org/
• AWS Lambda - please visit its website: https://aws.amazon.com/lambda/

Provided Code

Quarkus Camel Amazon Lambda Integration example

This example contains a sample Greeter service build using Quarkus & Camel which can be deployed into the Amazon Lambda as function.

⚠️ INCOMPATIBLE WITH DEV MODE: Amazon Lambda Binding is not compatible with dev mode yet!

Related Guides

• AWS Lambda (guide): Write AWS Lambda functions
• Apache camel (guide): Write Apache Camel route

Running the application in dev mode

You can run your application in dev mode that enables live coding using:

./mvnw compile quarkus:dev

NOTE: Quarkus now ships with a Dev UI, which is available in dev mode only at http://localhost:8080/q/dev/.

Building and Packaging the Java code as Quarkus JVM application

The application can be packaged using:

./mvnw clean package

This will compile and package your code.

It produces the quarkus-run.jar file in the target/quarkus-app/ directory. Be aware that it’s not an uber-jar as the dependencies are copied into the target/quarkus-app/lib/ directory.

If you want to build an uber-jar, execute the following command:

./mvnw package -Dquarkus.package.type=uber-jar

The application is now runnable using java -jar target/quarkus-app/quarkus-run.jar.

It also generates a zip file target/function.zip. This zip file contains your java code along with the dependencies.

Building and Packaging the Java code as Quarkus Native executable

If you want a lower memory footprint and faster initialization times for your lambda, you can compile your Java code to a native executable. Just make sure to rebuild your project with the -Pnative switch.

./mvnw package -Pnative

ℹ️ If you are building on a non-Linux system Or, if you don't have GraalVM installed, you can run the native executable build using docker container. You need to pass in a property instructing quarkus to use a docker build as Amazon Lambda requires linux binaries. You can do this by passing this property to your Maven build: -Dquarkus.native.container-build=true. However, This requires to have docker installed locally.

./mvnw package -Pnative -Dquarkus.native.container-build=true

Either of these commands will compile and create a native executable image. You can then execute your native executable with: ./target/code-with-quarkus-1.0.0-SNAPSHOT-runner

It also generates a zip file target/function.zip. This zip file contains your native executable image renamed to bootstrap. This is a requirement of the AWS Lambda Custom (Provided) Runtime.

If you want to learn more about building native executables, please consult https://quarkus.io/guides/maven-tooling.html.

Extra Build Generated Files

NOTE: After you run the build, there are a few extra files generated by the quarkus-amazon-lambda extension. These files are in the build directory: target/

• function.zip - lambda deployment file

• manage.sh - wrapper around aws lambda cli calls

• bootstrap-example.sh - example bootstrap script for native deployments

• sam.jvm.yaml - (optional) for use with sam cli and local testing

• sam.native.yaml - (optional) for use with sam cli and native local testing

ℹ️ Please click here for details on how to use these scripts

Deploying the Quarkus JVM application to AWS Lambda via AWS Web Console

1. Go to AWS Web console and search for Lambda Service

2. Click Create Function and select Author From Scratch

3. Give the name for your function which should be unique

4. Select Java 11 (Corretto) as Runtime

5. Under Permission feel free to create / use existing role to give the required permission for your lambda function

6. Once the function is created click the function name to upload and configure it.

7. Scroll down and select the Code tab. Click the upload from dropdown on right hand side of the screen and select .zip or .jar file

8. Click upload and browse to the path where the generated a zip file is created target/function.zip and select the function.zip file and click save

9. Under the Code tab scroll down to the Runtime settings and click edit

10. For the Handler details please provide the Quarkus Handler

io.quarkus.amazon.lambda.runtime.QuarkusStreamHandler::handleRequest

Testing the Lamda

1. Now select the Test tab for executing a quick test. Copy paste the below json payload and hit Test

   {
    "name": "Ravishankar"
   }

2. If everything goes fine you should get the below response along with the lambda execution logs & stats

   Hello Ravishankar ! How are you? from GreetService

Deploying the Quarkus Native executable to AWS Lambda via AWS Web Console

NOTE: Please ensure that you have built your Java code as Quarkus Native executable

1. Go to AWS Web console and search for Lambda Service

2. Click Create Function and select Author From Scratch

3. Give the name for your function which should be unique

4. For Runtime please scroll down and Select Provide your own bootstrap on Amazon Linux 2 under Custom Runtime

5. Under Permission feel free to create / use existing role to give the required permission for your lambda function

6. Once the function is created click the function name to upload and configure it.

7. Scroll down and select the Code tab. Click the upload from dropdown on right hand side of the screen and select .zip or .jar file

8. Click upload and browse to the path where the generated a zip file is created target/function.zip and select the function.zip file and click save

9. Under the Code tab scroll down to the Runtime settings and click edit

10. For the Handler details please provide the below Handler

        not.used.in.provided.runtime

11. Then Select the Configuration tab and click Environment Variables

12. For Key enter DISABLE_SIGNAL_HANDLERS & for Value enter true

Testing the Lamda

1. Now select the Test tab for executing a quick test. Copy paste the below json payload and hit Test

   {
    "name": "Ravishankar"
   }

2. If everything goes fine you should get the below response along with the lambda execution logs & stats

   Hello Ravishankar ! How are you? from GreetService

JVM vs Native Results based on lambda execution logs & stats