Top Poster
#1 ramon fincken 399
#2 Site admin 3
#3 Ber|Art 2
#4 braddmark 1
#5 accentmedia 1
#6 Xarzu 1
#7 pEcosespedex 1
#8 khadish 1
#9 moxxx 1
#10 nistelrock 1
Amazon Lambda add expires headers to S3 storage uploads automatically



Rating : 3 / 5

 
Post new topic   Reply to topic    Ramonfincken.com Forum Index -> Bash, perl, python and CLI linux
Beta
Want to be notified by email when this topic gets a reply?  
View previous topic :: View next topic  
Author Message
ramon fincken
Site's programmer

Get a free globally recognized avatar
It's free!

Joined: 03 Aug 2007
Posts: 399
Location: A'dam/Diemen, The Netherlands
PostPosted: Sat Nov 12, 2016 12:46 pm    Post subject: Amazon Lambda add expires headers to S3 storage uploads automatically Reply with quote
Handy if you are using cloudfront, which is unable (sadly) to add extra headers based on S3 source files.

Runtime
Node.js 4.3

Handler
index.handler

Rest is up to you

Memory
128MB

Timeout
5 sec

VPC
No

Triggers
No -> I have set this up in the bucket config -> Events -> add notification for "Object created"


Code
Code:
'use strict';
 
// CONFIGURATION //////////////////////////////////////////////
var CacheControlHeader = 'public, max-age=31536000';
var lineBreak = 'nn-----------------------------------------nn';
///////////////////////////////////////////////////////////////
 
console.log('Loading function...');
 
let aws = require('aws-sdk');
let s3 = new aws.S3({ apiVersion: '2006-03-01' });
 
exports.handler = (event, context, callback) => {
    const bucket = event.Records[0].s3.bucket.name;
    const key = decodeURIComponent(event.Records[0].s3.object.key.replace(/\+/g, " "));
    var params = { Bucket: bucket, Key: key };
    s3.getObject(params, (err, data) => {
        if (err) {
            console.log(err);
            var message = lineBreak+'Error encountered!nnFailed to get object: s3://'+bucket+'/'+key +'.nnMake sure it is in the same region as this function!'+lineBreak;
            console.log(message);
        } else {
        const mimeHeader = data.ContentType;
            if (data.CacheControl != CacheControlHeader) {
                var params = { Bucket: bucket, Key: key, CopySource: encodeURIComponent(bucket+'/'+key), ContentType: data.ContentType, CacheControl: CacheControlHeader, 'Metadata':{}, MetadataDirective: 'REPLACE' };
                s3.copyObject(params, (err, data) => {
                    if (err) {
                        console.log(err);
                        message = lineBreak+'Error encountered!nnFailed to get object: s3://'+bucket+'/'+key +'.nnMake sure it is in the same region as this function!'+lineBreak;
                        console.log(message);
                    } else {
                       message = lineBreak+'Metadata updated successfully!nnOBJECT: s3://'+bucket+'/'+key+'nCONTENT-TYPE: '+mimeHeader+'nCACHE-CONTROL: '+CacheControlHeader+''+lineBreak;
                       console.log(message);
                    }
                });
            } else {
                message = lineBreak+'Metadata already updated!nnOBJECT: s3://'+bucket+'/'+key+'nCONTENT-TYPE: '+mimeHeader+'nCACHE-CONTROL: '+CacheControlHeader+''+lineBreak;
                console.log(message);
            }
 
        }
    });
};
Back to top
View user's profile Send private message Visit poster's website
Google adsense
Advertisement
PostPosted: Sat Nov 12, 2016 12:46 pm    Post subject: Amazon Lambda add expires headers to S3 storage uploads automatically
Advertisement
Back to top
GravityForms
Advertisement
PostPosted: Sat Nov 12, 2016 12:46 pm    Post subject: Amazon Lambda add expires headers to S3 storage uploads automatically
Advertisement
Gravity Forms Plugin for WordPress
Back to top
Post new topic   Reply to topic    Ramonfincken.com Forum Index -> Bash, perl, python and CLI linux All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
General forums
The world of freelance
Programming
Other projects
Poll
I love gifts

Yes goodies and presents! [3]
No but I love polls ! [1]
Related google ads