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:
- Create an AWS Lambda function with the function code written in C#.
- Set up an IAM role and policy to allow Lambda to be executed.
- Create an S3 bucket to store the deployment package for the Lambda function.
- 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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