Lambda Pipeline S3 deployment

Figuring out the best way of triggering a Lambda Code Pipeline S3 depoyment is a key part of a serverless architecture.

It can be really useful when you want your app to update pending an update from a 3rd party service.

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I’ve posted the Lambda function below (with comments) so you can trigger a Lambda Code Pipeline S3 depoyment! I’ve also written a similar post to this on how to add authentication to S3 bucket with Lambda functions, that you may find helpful! Enjoy 😀

Lambda function

// require the AWS SDK
const AWS = require('aws-sdk');
// create an instance of code pipeline from the AWS SDK, so you can reference it
const codepipeline = new AWS.CodePipeline();

// The Lambda function that excecutes on run time
exports.handler = async (event) => {
   // javascript try statement
    try {
        // Await the result of the asynchronous function called build
        await Promise.all([
            // call the function build, passing through the name of the codepipeline to trigger
            build('Test')
        ]);
        // log the success of the pipeline trigger
        console.log('SUCCESS: triggered code pipeline');
    }
     // javascript catch statement 
     catch (error) {
        // log any occurred errors
        throw new Error(`FAILED: dataToS3 lambda. ${error.message}`);
    }
};

// asynchronous function called build
async function build(pipelineName) {
   // define parameters for the pipeline build, in this case only the pipeline's name is required
    const params = {
        name: pipelineName,
    };
    // await the confirmation that the code pipeline has been started
    await codepipeline.startPipelineExecution(params).promise();
}

James Miller

Creative Technologist