Add traces storage

lib/storages/tracesStorage.js

@@ -0,0 +1,67 @@
+'use strict';
+
+const fs = require('fs');
+
+const uuidv1 = require('uuid/v1');
+
+const traceName = (uuid, label, type, ext = 'xml') => {
+	return `${uuid}_${label}_${type}.${ext}`;
+};
+
+module.exports = dir => ({
+	traceData: '',
+	traceLabel: '',
+	lastTraceID: null,
+	connectToLastTrace: false,
+
+	label(str) {
+		this.traceLabel = str;
+
+		return this;
+	},
+
+	data(data) {
+		if (!data)
+			throw Error('No trace given to be persisted.');
+
+		this.traceData = data;
+
+		return this;
+	},
+
+	ofType(type) {
+		this.type = type;
+
+		return this;
+	},
+
+	new() {
+		this.connectToLastTrace = false;
+
+		return this;
+	},
+
+	connect() {
+		this.connectToLastTrace = true;
+
+		return this;
+	},
+
+	persist() {
+		if (!dir)
+			throw Error('No directory to save the traces to provided.');
+
+		this.lastTraceID = this.connectToLastTrace ? this.lastTraceID : uuidv1();
+
+		const name = traceName(this.lastTraceID, this.traceLabel, this.type);
+		const path = `${dir}/${name}`;
+
+		try {
+			fs.writeFileSync(path, this.traceData);
+			console.log("Data written to file");
+		} catch (error) {
+			console.log(error);
+			throw error;
+		}
+	},
+});