npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

serverless-plugin-existing-s3

v2.4.0

Published

Attach Lambda events to an existing S3 bucket, for Serverless.com 1.11.0+.

Downloads

25,719

Readme

Why?

Overcomes the CloudFormation limitation on attaching an event to an uncontrolled bucket, for Serverless.com 1.11.0+. See this stackoverflow issue for more information.

How?

1. NPM dependency Looking to eliminate this step, as it will place the dependency within your deployed code.

> npm install serverless-plugin-existing-s3

Declare the plugin in your serverless.yml


plugins:
 - serverless-plugin-existing-s3

2. Give your deploy permission to access the bucket. The BUCKET_NAME variable within provider.iamRoleStatements.Resource.Fn::Join needs to be replaced with the name of the bucket you want to attach your event(s) to. If there are multiple buckets you want to attach events to add a new item for each bucket.

provider:
  name: aws
  runtime: nodejs4.3
  iamRoleStatements:
    ...
    -  Effect: "Allow"
       Action:
         - "s3:GetBucketNotification"
         - "s3:PutBucketNotification"
       Resource:
         Fn::Join:
           - ""
           - - "arn:aws:s3:::BUCKET_NAME or *"

3. Attach an event to your target function. Add an -existingS3 event definition under 'events' of your function declaration. The 'events' value is optional under your -existingS3 event and if omitted, it will default to a single entry for "s3:ObjectCreated:*".

The rules property is optional and can contain either a prefix, suffix or both of these properties as a rule for when the event will trigger.

Note: The bucketEvents and eventRules attributes introduced in 1.0.1 will still work, but will likely be deprecated in the future.


functions:
  someFunction:
    handler: index.handler
    events:
      - existingS3:
          bucket: BUCKET_NAME
          events:
            - s3:ObjectCreated:*
          rules:
            - prefix: images/
            - suffix: .jpg

Multiple Prefixes As identified with issue 62.

functions:
  myAmazingLambdaFunction:
    handler: lambda-to-be-triggered-by-s3.handler
    events:
      - existingS3:
          bucket: 'my-bucket'
          events:
            - s3:ObjectCreated:*
          rules:
            - prefix: some/prefix
      - existingS3:
          bucket: 'my-bucket'
          events:
            - s3:ObjectCreated:*
          rules:
            - prefix: someother/prefix

Run the command. I could not figure out how to hook into the existing deploy behaviors built into Serverless.com's deploy command. So as a result you have to run a separate command AFTER you do sls deploy.

> sls deploy
Serverless: Zipping service...
Serverless: Uploading CloudFormation file to S3...
Serverless: Removing old service versions...
Serverless: Uploading .zip file to S3...
Serverless: Updating Stack...
Serverless: Checking stack update progress...
..
Serverless: Deployment successful!

Service Information
service: service-name
stage: stage
region: region
endpoints:
  None
functions:
  someFunction: arn:aws:lambda:region:accountid:function:service-name-stage-someFunction

> sls s3deploy
Attaching event(s) to: someFunction
Done.

Command line options

  • --alias: Use this option to specify the lambda function's alias to be set as the event handler. This is optional and if omitted, the lambda function without a qualifier will be used (the $LATEST version). Here's an example on how to use it:
> sls deploy --stage dev --alias dev
> sls s3deploy --stage dev --alias dev
> sls s3eventremove --stage dev --alias dev

I haz an errawr

The only one I see, and quite regularly during my testing, is a result of having the wrong bucket name configured in the serverless.yml, either in the IAM configuration providing permissions or in the function definition where I'm attaching the event. Make sure your bucket names are right.

If you are really stuck, open an issue at https://github.com/matt-filion/serverless-external-s3-event/issues

Contributing

You can run test by running

yarn install
yarn test