I'm storing documents with attachments in Cloudant database and I'm using nano client (link provided here: https://github.com/dscape/nano) multipart get to retrieve both the document and the attachment at the same time. The api call works and I get a buffer which is what the documentation says I should get; however I don't know how to parse/split the buffer so I can separate the document and the attachment (a JPG).
The JSON object stored in the database looks like this:
{
"_id": "3452345",
"_rev": "12345",
"projectName": "Project",
"projectUrl": "https://github.com/",
"projectDescription": "project",
"_attachments": {
"image": {
"content_type": "image/png",
"revpos": 1,
"digest": "md5-yh3lM9PmqK2TCXc9OxSldg==",
"length": 1396888,
"stub": true
}
}
}
The following function is from nano client and returns a buffer; which I believe contains both the document and the actual image attachment in that buffer. How can I separate or parse the buffer so I can retrieve the document data to convert it to JSON and then the image attachment to have it as base64 encoded.
db.multipart.get('myDoc', function(err, buffer) {
if (!err){
//not sure how to split/parse the buffer to retrieve doc and att
}
});
Note: I can retrieve the document and the attachment separately however I have two perform to http requests. The document http request returns a JSON object and the attachment returns a buffer which I then use buffer.toString('base64'); and then I can easily retrieve the image.
If you know a way to extract the data from the nodeJS buffer or a better way of doing this please leave a comment. Finally please choose methods that are efficient and quick.
Thank you
