Update attributes.js

[blairjanis]

I need to add this print-scaling line to get scaling to work in my ipp implementation. Can we add it to the master branch so I don't need to manually add it every time I deploy?

[cah-brandon-trebbien]

@blairjanis I am trying to use this functionality, but getting the below response back. Is there something I'm missing here?

fs.readFile(file, (err, pdf) => {
if (err) throw err;
var msg = {
"operation-attributes-tag": {
"requesting-user-name": "Name",
"job-name": "MyTestJob",
"document-format": "application/pdf"
},
"job-attributes-tag": {
"sides": "one-sided",
"finishings": "staple",
"print-scaling": "fit"
},
data: pdf
};
printer.execute("Print-Job", msg, function(err, res){
console.log(res);
});

Response:
The spec is not clear on how to handle tag 16: print-scaling=undefined. Please open a github issue to help find a solution!
{ version: '2.0',
statusCode: 'successful-ok-ignored-or-substituted-attributes',
id: 19048765,
'operation-attributes-tag':
{ 'attributes-charset': 'utf-8',
'attributes-natural-language': 'en-us',
'status-message': 'successful-ok-ignored-or-substituted-attributes' },
'unsupported-attributes-tag': { 'print-scaling': undefined },
'job-attributes-tag':
{ 'job-uri': 'XXXXXX',
'job-id': 1543,
'job-state': 'processing',
'job-state-reasons': 'none',
'job-state-message': 'none',
'number-of-intervening-jobs': 0 } }