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  2. Integrate Flux with AWS Lambda in C#

How do I integrate Flux with AWS Lambda in C#?

In this example, we’ll walk through how to integrate Flux with AWS Lambda using C# for the function code. Flux is a set of continuous and progressive delivery solutions for Kubernetes that are open and extensible. AWS Lambda is a serverless compute service that runs your code in response to events and automatically manages the underlying compute resources.

We’ll need to:

  1. Create an AWS Lambda function with the function code written in C#.
  2. Set up an IAM role and policy to allow Lambda to be executed.
  3. Create an S3 bucket to store the deployment package for the Lambda function.
  4. Deploy the Lambda function, associating it with the role and S3 bucket.
import * as pulumi from "@pulumi/pulumi";
import * as aws from "@pulumi/aws";

// Create an S3 bucket to store Lambda deployment package
const lambdaBucket = new aws.s3.BucketV2("lambda_bucket", {bucket: "my-flux-lambda-bucket"});
// Create an IAM role for the Lambda function
const lambdaExecRole = new aws.iam.Role("lambda_exec_role", {
    name: "flux_lambda_execution_role",
    assumeRolePolicy: `{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Action": "sts:AssumeRole",
      "Principal": {
        "Service": "lambda.amazonaws.com"
      },
      "Effect": "Allow",
      "Sid": ""
    }
  ]
}
`,
});
// Attach a policy to the IAM role
const lambdaPolicy = new aws.iam.PolicyAttachment("lambda_policy", {
    name: "flux_lambda_policy",
    roles: [lambdaExecRole.name],
    policyArn: "arn:aws:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole",
});
// Create a Lambda function
const fluxLambda = new aws.lambda.Function("flux_lambda", {
    name: "fluxLambdaFunction",
    role: lambdaExecRole.arn,
    handler: "FluxLambda::FluxLambda.Function::FunctionHandler",
    runtime: aws.lambda.Runtime.DotnetCore3d1,
    s3Bucket: lambdaBucket.bucket,
    s3Key: "flux_lambda_function.zip",
    environment: {
        variables: {
            key1: "value1",
            key2: "value2",
        },
    },
});
export const lambdaArn = fluxLambda.arn;

Key Points

  • AWS Provider: Specifies the AWS region.
  • S3 Bucket: Stores the Lambda deployment package.
  • IAM Role: Defines the permissions for the Lambda function.
  • Lambda Function: Deploys the function with the provided C# code.

Summary

We’ve covered the steps to integrate Flux with AWS Lambda for a function written in C#. By setting up the necessary AWS infrastructure, including an S3 bucket, IAM role, and the Lambda function itself, we’ve established a serverless setup that can respond to events, executing our C# code within a Flux environment. This approach utilizes AWS managed services to simplify deployment and management of serverless applications.

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