Invalidate existing file when it was changed

[paveliko]

Hi Steffen,
I use grunt-s3 for publish my build and I use sync with { verify: true } for upload new or changed files only.
Is it possible to invalidate only changed files?

[steffenmllr]

I've never used grunt-s3 does it provide a list of updated files?

[rainabba]

I use aws-s3 (tried s3 and had issues). It does output to console which files are changes, so if it doesn't provide that information in a return somewhere, I suspect it would be fairly trivial to get it. I could use this too.

https://github.com/MathieuLoutre/grunt-aws-s3

[MathieuLoutre]

grunt-aws-s3 now provides a list of changed files and attaches it to the grunt config variable aws_s3_changed by default. It can be accessed with grunt.config.get('aws_s3_changed').

[ianpogi5]

any examples on how to use aws_s3_changed in the gruntfile?

[rantiev]

As far as i understand amazon consider wildcard cache invalidation as one invalidation cache request, even if there are thousands files. So if you afraid that you will be charged for 1000 cache invalidation requests while invalidation of folder with 1000 files then no. What goal is there then? Prevention user browser from realoading additional files, that's browser cache problem then, or no?

[ianpogi5]

@rantiev that's what I ended up doing

[rainabba]

@rantiev I want to be sure I understand because I think not. Are you suggesting that when one file file has changed, one should invalidate all files?

[eugenioclrc]

I manage to make it work.

The trick its in creating a dinamyc task.

grunt.registerTask('upload', ['aws_s3:production', 'invalidatedfiles']);

invalidatedfiles its our dinamyc task;

grunt.registerTask('invalidatedfiles', 'Build with production options', function () {
  grunt.config.set('invalidate_cloudfront.production.files', [{
    expand: true,
    cwd: 'your cwd',
    src: grunt.config.get('aws_s3_changed'),
   dest: '',
   filter: 'isFile',
  }]);

  grunt.task.run('invalidate_cloudfront:production');
});