serverless-offline-s3
Emulate AWS λ and s3 locally when developing your Serverless project
Last updated 2 months ago by djamelsoualmi .
MIT · Repository · Bugs · Original npm · Tarball · package.json
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serverless-offline-s3

This Serverless-offline plugin emulates AWS λ and S3 queue on your local machine. To do so, it listens S3 bucket events and invokes your handlers.

Features:

Installation

First, add serverless-offline-s3 to your project:

npm install serverless-offline-s3

Then inside your project's serverless.yml file, add following entry to the plugins section before serverless-offline (and after serverless-webpack if presents): serverless-offline-s3.

plugins:
  - serverless-webpack
  - serverless-offline-s3
  - serverless-offline

See example

How it works?

To be able to emulate AWS S3 Bucket on local machine there should be some bucket system actually running. One of the existing implementations suitable for the task is Minio.

Minio is a High Performance Object Storage released under Apache License v2.0. It is API compatible with Amazon S3 cloud storage service. Use MinIO to build high performance infrastructure for machine learning, analytics and application data workloads. See example s3 service setup.

We also need to setup actual buckets in Minio server, we can use AWS cli tools for that. In example, we spawn-up another container with aws-cli pre-installed and run initialization script, against Minio server in separate container.

Once Minio is running and initialized, we can proceed with the configuration of the plugin.

Note that starting from version v3.1 of the plugin.

Configure

Functions

The configuration of function of the plugin follows the serverless documentation.

functions:
  myS3Handler:
    handler: handler.compute
    events:
      - s3:
          bucket: myBucket
          event: s3:ObjectCreated:Put

S3

The configuration of aws.S3's client of the plugin is done by defining a custom: serverless-offline-s3 object in your serverless.yml with your specific configuration.

Minio with the following configuration:

custom:
serverless-offline-s3:
  endpoint: http://0.0.0.0:9000
    region: eu-west-1
  accessKey: minioadmin
  secretKey: minioadmin

Current Tags

  • 4.0.3                                ...           latest (2 months ago)
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4 Versions

  • 4.0.3                                ...           2 months ago
  • 4.0.2                                ...           2 months ago
  • 4.0.1                                ...           2 months ago
  • 4.0.0                                ...           2 months ago
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