abort/stop amazon aws s3 upload, aws sdk javascript

问题

I am using aws sdk javascript to upload file in amazon s3.

code :

AWS.config.update({
                accessKeyId : 'access-key',
                secretAccessKey : 'secret-key'
            });
            AWS.config.region = 'region';
            var bucket = new AWS.S3({params: {Bucket: 'bucket-name'}});
            //var fileChooser = document.getElementById('file');
            var files = event.target.files;
            $.each(files, function(i, file){
            //console.log(file.name);
                if (file) {
                    var params = {Key: file.name, ContentType: file.type, Body: file};
                    bucket.upload(params).on('httpUploadProgress', function(evt) {
                        console.log("Uploaded :: " + parseInt((evt.loaded * 100) / evt.total)+'%');
                        if("Uploaded :: " + parseInt((evt.loaded * 100) / evt.total)+'%' == 'Uploaded :: 20%'){
                            console.log("abort upload");
                            bucket.abort.bind(bucket);
                        }
                    }).send(function(err, data) {
                        if(err != "null"){
                            console.log(data);
                            //alert("Upload Success \nETag:"+ data.ETag + "\nLocation:"+ data.Location);
                            var filename = data.Location.substr(data.Location.lastIndexOf("/")+1, data.Location.length-1);
                            console.log(filename);
                            fileData = filename;
                            filename = filename.replace("%20"," ");
                            $('.aws-file-content').append('<i id="delete-aws-file'+i+'" class="delete-aws-file icon-remove-sign"  data-filename=' + fileData +'></i><a href="'+data.Location+'" target=_blank >'+filename+'</a><br>');
                        }else{
                            console.log(err);
                        }
                    });
                }
            });

file is uploading successfully, I want to abort/stop file upload used:

 bucket.abort();// not working
 bucket.abort.bind(bucket); //not working.

Thanks for help.

回答1:

Found the solution :

// replaced bucket.upload() with bucket.putObject()
var params = {Key: file.name, ContentType: file.type, Body: file};
request = bucket.putObject(params);

then for abort the request:

abort: function(){
            request.abort();
        }

回答2:

You cannot bind from the bucket which is your S3 object, it must be called for the upload part.

change for something like this

var upload = bucket.upload(params)
upload.send(....)

so you can bind on upload like

upload.abort.bind(upload);

you can call within an timeout method as crowned in the example

// abort request in 1 second
setTimeout(upload.abort.bind(upload), 1000);

回答3:

Calling abort() in the browser environment will not abort any requests that are already in flight. If a multipart upload was created, any parts not yet uploaded will not be sent, and the multipart upload will be cleaned up.

Default value for part size is (5 * 1024 * 1024)

回答4:

Through dumb luck I've stumbled upon a way to do this for multipart uploads. The accepted answer forces you to use the putObject method, which does not chunk uploads and send them using the multipart upload API. This following solution uses the s3.upload method of the AWS S3 SDK for Javascript in the Browser. And it seems to work just fine, even though the example from official documentation doesn't work.

var bucket = new AWS.S3({params: {Bucket: 'bucket-name'}});
var params = {Key: file.name, ContentType: file.type, Body: file};
var bucket.upload(params).send();

setTimeout(bucket.abort, 1000);

That's it. I just tried calling bucket.abort() and it just worked. Not sure why AWS hasn't documented this.

来源：https://stackoverflow.com/questions/34429957/abort-stop-amazon-aws-s3-upload-aws-sdk-javascript