CODEWITHSUNDEEP
postbrowsererror-handlinguploadamazon-s3
rock
rock

Reputation: 25

How to Handle Error in S3 browser upload via POST

I am newbie to S3. Trying to catch errors in S3 http://docs.aws.amazon.com/AmazonS3/2006-03-01/API/ErrorResponses.html

My code sample:

{"expiration": "2007-12-01T12:00:00.000Z",
  "conditions": [
    {"bucket": "johnsmith"},
    ["starts-with", "$key", ""],
    {"acl": "private"},
    {"success_action_redirect": "http://johnsmith.s3.amazonaws.com/successful_upload.html"},
    ["eq", "$Content-Type", "application/msword,application/pdf"],
    ["content-length-range", 2048, 20971520 ]
  ]
}'; 



<form action="http://johnsmith.s3.amazonaws.com/" method="post" enctype="multipart/form-data">
<input type="hidden" name="key" value="${filename}" /><br />
<input type="hidden" name="acl" value="private" />
<input type="hidden" name="success_action_redirect" value="http://johnsmith.s3.amazonaws.com/successful_upload.html" >
<input type="hidden" name="AWSAccessKeyId " value="15B4D3461F177624206A" />
<input type="hidden" name="Policy" value="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" />
<input type="hidden" name="Signature" value="2qCp0odXe7A9IYyUVqn0w2adtCA=" />
File: <input type="file" name="file" /> <br />
<input type="submit" name="submit" value="Upload to Amazon S3" />
</form>

Want to catch error if file is failed to upload or expired. To check content type, content length range.

Getting proper success callback variable like bucket, key, etag.

Thanks

Upvotes: 2

Views: 1939

Answers (2)

ranjeetcao
ranjeetcao

Reputation: 1843

using simple ajax form post...

<script>
  function uploadFile() {
    var file_name = $('#form1 :input[name="file"]').val().split('\\').pop();
    if(!file_name || file_name.length === 0) {
      alert('please choose file')
      return false;
    }

    $.ajax({
      url: "/getS3FormData.php",
      cache: false,
      type: 'GET',
      data: {file_name : file_name} ,
      async: false,
      success: function (response) {
        var s3 = JSON.parse(response);
        handleFileUpload(s3);
      },
      error: function (error) {
        alert("Upload FAILED  :-( Retry.");
      }
    });
  }


function handleFileUpload(s3) {
  var fd = new FormData();
  fd.append('key', s3.key);
  fd.append('AWSAccessKeyId', s3.AWSAccessKeyId);
  fd.append('acl', s3.acl);
  fd.append('policy', s3.policy);
  fd.append('signature', s3.signature);
  fd.append('Content-Type', s3.content_type);

  var file = $('#form1').find('input[name=file]')[0].files[0];      
  fd.append("file", file);

  window.onbeforeunload = function () {
    return "Upload in progress";
  }

  $.ajax({
    url: s3.url,
    data: fd,
    cache: false,
    contentType: false,
    processData: false,
    type: 'POST',
    success: function(data){
      window.onbeforeunload = null;
      window.location.href = s3.success_action_redirect;
    },
    error: function(error) {
      window.onbeforeunload = null;
      alert('Upload Failed, Please try again');
    }
  });
}

html form 

  <form id="form1" method="post" enctype="multipart/form-data">  
    <input type="file" name="file"></input>
    <input type="submit" onclick="uploadFile(); return false;" value="Upload">
  </form>

Upvotes: 1

Jo&#227;o Costa
Jo&#227;o Costa

Reputation: 2355

EDIT: My original answer used iframes but I finally got the XMLHttpRequest to work which I think it is a cleaner approach.

I've had the same problem. My requirements were:

  • I didn't want to use flash
  • I didn't want the user to see the AWS error XML

There are plenty of solutions scattered all over the internet. I got it to work in two versions:

  1. Using an iFrame to render the POST result and by trying to access the uploaded file (in my case, an image) to check if the upload worked or not: https://gist.github.com/joaoffcosta/5728483

  2. Using XMLHttpRequest to make the request and handle progress, completion and premature failure: https://gist.github.com/joaoffcosta/5729398 (Best solution IMO)

In both solutions, your S3 Bucket should allow 'Everyone' to 'Upload/Delete'. Additionally, the XMLHttpRequest solution requires you to configure CORS on your bucket. To do it you should go to your bucket 'Permissions', press 'Add CORS Configuration' and add something like this:

<CORSConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
    <CORSRule>
        <AllowedOrigin>http://your_website_or_localhost_server/</AllowedOrigin>
        <AllowedMethod>POST</AllowedMethod>
        <MaxAgeSeconds>3000</MaxAgeSeconds>
        <ExposeHeader>x-amz-server-side-encryption</ExposeHeader>
        <ExposeHeader>x-amz-request-id</ExposeHeader>
        <ExposeHeader>x-amz-id-2</ExposeHeader>
        <AllowedHeader>*</AllowedHeader>
    </CORSRule>
</CORSConfiguration>

Upvotes: 0

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