gulp plugin to publish files to amazon s3


awspublish plugin for gulp

First, install gulp-awspublish as a development dependency:

npm install --save-dev gulp-awspublish

Then, add it to your gulpfile.js:

var awspublish = require('gulp-awspublish');
gulp.task('publish', function() {
  // create a new publisher using S3 options 
  var publisher = awspublish.create({
    params: {
      Bucket: '...'
  // define custom headers 
  var headers = {
    'Cache-Control': 'max-age=315360000, no-transform, public'
    // ... 
  return gulp.src('./public/*.js')
     // gzip, Set Content-Encoding headers and add .gz extension 
    .pipe(awspublish.gzip({ ext: '.gz' }))
    // publisher will add Content-Length, Content-Type and headers specified above 
    // If not specified it will set x-amz-acl to public-read by default 
    // create a cache file to speed up consecutive uploads 
     // print upload updates to console 
// output 
// [gulp] [create] file1.js.gz 
// [gulp] [create] file2.js.gz 
// [gulp] [update] file3.js.gz 
// [gulp] [cache]  file3.js.gz 
// ... 
  • Note: If you follow the aws-sdk suggestions for providing your credentials you don't need to pass them in to create the publisher.

  • Note: In order for publish to work on S3, your policiy has to allow the following S3 actions:

  • "s3:PutObject",
  • "s3:GetObject",
  • "s3:DeleteObject",
  • "s3:ListMultipartUploadParts",
  • "s3:AbortMultipartUpload",
  • "s3:ListBucket"

add an aws-credentials.json json file to the project directory with your bucket credentials, then run mocha.

  "params": {
    "Bucket": "..."
  "accessKeyId": "...",
  "secretAccessKey": "..."

create a through stream, that gzip file and add Content-Encoding header.

Available options:

  • ext: file extension to add to gzipped file (eg: { ext: '.gz' })

Create a Publisher. Options are used to create an aws-sdk S3 client. At a minimum you must pass a bucket option, to define the site bucket. If you are using the aws-sdk suggestions for credentials you do not need to provide anything else.

Also supports credentials specified in the old knox format, a profile property for choosing a specific set of shared AWS creds, or and accessKeyId and secretAccessKey provided explicitly.

Create a through stream, that push files to s3.

  • header: hash of headers to add or override to existing s3 headers.
  • options: optional additional publishing options
    • force: bypass cache / skip
    • simulate: debugging option to simulate s3 upload
    • createOnly: skip file updates

Files that go through the stream receive extra properties:

  • s3.path: s3 path
  • s3.etag: file etag
  • file last modified date
  • s3.state: publication state (create, update, delete, cache or skip)
  • s3.headers: s3 headers for this file. Defaults headers are:
    • x-amz-acl: public-read
    • Content-Type
    • Content-Length

Note: publish will never delete files remotely. To clean up unused remote files use sync.

Create a through stream that create or update a cache file using file s3 path and file etag. Consecutive runs of publish will use this file to avoid reuploading identical files.

Cache file is save in the current working dir and is named .awspublish-<bucket>. The cache file is flushed to disk every 10 files just to be safe.

create a transform stream that delete old files from the bucket. You can speficy a prefix to sync a specific directory.

warning sync will delete files in your bucket that are not in your local folder.

// this will publish and sync bucket files with the one in your public directory 
// output 
// [gulp] [create] file1.js 
// [gulp] [update] file2.js 
// [gulp] [delete] file3.js 
// ... 

The aws-sdk S3 client is exposed to let you do other s3 operations.

Create a reporter that logs s3.path and s3.state (delete, create, update, cache, skip).

Available options:

  • states: list of state to log (default to all)
// this will publish,sync bucket files and print created, updated and deleted files 
      states: ['create', 'update', 'delete']

You can use gulp-rename to rename your files on s3

// see examples/rename.js 
    .pipe(rename(function (path) {
        path.dirname += '/s3-examples';
        path.basename += '-s3';
// output 
// [gulp] [create] s3-examples/bar-s3.js 
// [gulp] [create] s3-examples/foo-s3.js 

You can use concurrent-transform to upload files in parallel to your amazon bucket

var parallelize = require("concurrent-transform");
  .pipe(parallelize(publisher.publish(), 10))

You can use the merge-stream plugin to upload two streams in parallel, allowing sync to work with mixed file types

var merge = require('merge-stream');
var gzip = gulp.src('public/**/*.js').pipe(awspublish.gzip());
var plain = gulp.src([ 'public/**/*', '!public/**/*.js' ]);
merge(gzip, plain)

A router for defining file-specific rules

MIT License