arun-gupta.github.io

IntelliJ and AWS Toolkit Demo Script

Pre-reqs

IntelliJ IDEA 2018.3.5 (Community Edition)
Build #IC-183.5912.21, built on February 26, 2019
JRE: 1.8.0_152-release-1343-b28 x86_64
JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
macOS 10.13.6

Install SAM CLI

Needs SAM CLI 0.13.0

brew install aws-sam-cli

or

brew upgrade aws-sam-cli

Check the version:

sam --version
SAM CLI, version 0.14.1

Setup Plugin

• IntelliJ IDEA, Preferences
• For the latest (in development) build, subscribe to EAP builds as explained at https://github.com/aws/aws-toolkit-jetbrains#eap-builds
• Search for plugins
• Search for aws tooklkit, select. Verify the version number is v1.2 at least and click on Install.
• Click on Restart IDE to restart the IDE

Create New Application

• Create New Project, AWS, AWS Serverless Application, Next
• Specify the values as shown:
• Click on Maven on top-right, add on +, select pom.xml

Create Lambda Function

• Expand project, HelloWorldFunction, src, main, java, helloworld
• Explain App.java, standard Java imports and AWS SDK
• Click on Lambda icon next to public class, Create new AWS Lambda...
  • Change memory to 1088
  • Configure AWS connection settings, if need to
  • Pick the region us-west-1
• Create Function
• Wait for the event log on bottom right corner
• AWS Explorer in bottom left corner, expand Lambda, refresh if need to Show the Lambda function.

Invoke Lambda Function Locally

This uses SAM Local CLI.

• Click on Lambda icon, click on Run [Local] App
• Change the payload to {}
• Click on Run to run the function locally

Debug Lambda Function Locally

This uses SAM Local CLI.

• Setup a breakpoint in the code
• Click on Lambda icon, click on Debug [Local] App
• Watch for the debugger to show frames and variables:
• Click on the green arrow in debugger console to resume execution, see the results:

Invoke Lambda Function Remotely

This uses AWS SDK.

• In AWS Explorer, click on Lambda, select Hello Lambda function, select Run [Remote] HelloLambda...
• Change the payload to {}
• Click on Run

Invoke Lambda Function Using CloudFormation

This uses CloudFormation.

• In Project Explorer, open template.yaml. This is SAM template. Explain Function and Events.
• Talk about how Table can be added.
• Right click, select on Deploy Serverless Application
• Give a name, specify the bucket
• Click on Deploy. It takes a few minutes for the CloudFormation stack to complete and then shows the output:
• In AWS Explorer, expand Lambda and CloudFormation to see the newly created stack and the function
• Right-click on the function, select Run [Remote] hello-serve...
• Click on Run, takes a few seconds and then shows the output: