The project source includes function code and supporting resources:

• src/ec2-spot - A C# .NET Core function.
• template.yml - An AWS CloudFormation template that creates an application.
• 1-create-bucket.sh, 2-deploy.sh, etc. - Shell scripts that use the AWS CLI to deploy and manage the application.

Use the following instructions to deploy the sample application. For more information on the application's architecture and implementation, see Managing Spot Instance Requests in the developer guide.

• .NET Core SDK 2.1
• The Bash shell. For Linux and macOS, this is included by default. In Windows 10, you can install the Windows Subsystem for Linux to get a Windows-integrated version of Ubuntu and Bash.
• The AWS CLI v1.17 or newer.

If you use the AWS CLI v2, add the following to your configuration file (~/.aws/config):

cli_binary_format=raw-in-base64-out

This setting enables the AWS CLI v2 to load JSON events from a file, matching the v1 behavior.

Download or clone this repository.

$ git clone https://github.com/awsdocs/aws-lambda-developer-guide.git
$ cd aws-lambda-developer-guide/sample-apps/ec2-spot

To create a new bucket for deployment artifacts, run 1-create-bucket.sh.

ec2-spot$ ./1-create-bucket.sh
make_bucket: lambda-artifacts-a5e491dbb5b22e0d

To deploy the application, run 2-deploy.sh.

ec2-spot$ ./2-deploy.sh
Uploading to e678bc216e6a0d510d661ca9ae2fd941  2737254 / 2737254.0  (100.00%)
Successfully packaged artifacts and wrote output template to file out.yml.
Waiting for changeset to be created..
Waiting for stack create/update to complete
Successfully created/updated stack - ec2-spot

This script uses AWS CloudFormation to deploy the Lambda functions and an IAM role. If the AWS CloudFormation stack that contains the resources already exists, the script updates it with any changes to the template or function code.

To invoke the function, run 3-invoke.sh.

ec2-spot$ ./3-invoke.sh
{
    "StatusCode": 200,
    "ExecutedVersion": "$LATEST"
}

Let the script invoke the function a few times and then press CRTL+C to exit.

The application uses AWS X-Ray to trace requests. Open the X-Ray console to view the service map. The following service map shows the function managing spot instances in Amazon EC2.

Choose a node in the main function graph. Then choose View traces to see a list of traces. Choose any trace to view a timeline that breaks down the work done by the function.

Finally, view the application in the Lambda console.

To view the application

1. Open the applications page in the Lambda console.
2. Choose ec2-spot.

To delete the application, run the cleanup script.

ec2-spot$ ./4-cleanup.sh