Database full of null characters

[erceth]

When I insert into the database one of the attributes in documents contains a bunch of null characters.

When I console.log the filename before inserting I don't see the null characters.

This is a problem when I pull the documents out the extra characters are still apart of the string. Is this something I am doing wrong?

Here's what's in my file:
{ "id": "123", "name": "Crippled Cam", "filepath": "123_2016-11-10_000.mp4\n", "_id": "uMwERiGF4bUtn7M9", "createdAt": { "$$date": 1481330291431 }, "updatedAt": { "$$date": 1481330291431 } } { "id": "123", "name": "Crippled Cam", "filepath": "\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000123_2016-11-10_001.mp4\n", "_id": "E6LR8fPQKig4Qn1b", "createdAt": { "$$date": 1481330299763 }, "updatedAt": { "$$date": 1481330299763 } } { "id": "123", "name": "Crippled Cam", "filepath": "\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000123_2016-11-10_002.mp4\n", "_id": "pINbQwZt9kCcvKyQ", "createdAt": { "$$date": 1481330308092 }, "updatedAt": { "$$date": 1481330308092 } } { "id": "123", "name": "Crippled Cam", "filepath": "\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000123_2016-11-10_003.mp4\n", "_id": "Ksjpx3DzczFm0vhj", "createdAt": { "$$date": 1481330316423 }, "updatedAt": { "$$date": 1481330316423 } }

Here's my insert:

listenForEvents() {
this.ffmpegEmitter.on('ffmpegNewSegment', (filepath) => {
	let doc = {
		id: this.id,
		name: this.name,
		filepath: filepath
	};
	db.insert(doc, function (err, newDoc) {   // Callback is optional
		// newDoc is the newly inserted document, including its _id
		// newDoc has no key called notToBeSaved since its value was undefined
		if (err) {
			//TODO: log didn't save event'
		}
	});
	console.log('inserted ', filepath);
})
}

[ralyodio]

is your db too big?

[erceth]

No, what I posted above is the contents of the whole file.

[erceth]

Turns out my bug had nothing to do with this library. I was writing to a file with one process while calling fs.truncate(database.txt, 0) with another. The first process must be keeping a pointer to where it left off.