changed file schema to be name only, storing them in object sets referencing their applicable versions

src/upgrade.js

@@ -4,19 +4,54 @@
 var async = require('async');
 var path = require('path');
 
+var db = require('./database');
 var utils = require('../public/src/utils');
 
-var Upgrade = {};
+var Upgrade = {
+	available: [
+		{
+			version: "1.2.0",
+			upgrades: ['category_recent_tids']
+		},
+		{
+			version: "1.3.0",
+			upgrades: ['favourites_to_bookmarks', 'sorted_sets_for_post_replies']
+		},
+		{
+			version: "1.4.0",
+			upgrades: ['global_and_user_language_keys', 'sorted_set_for_pinned_topics']
+		},
+		{
+			version: "1.5.0",
+			upgrades: ['flags_refactor']
+		}
+	]
+};
 
 Upgrade.run = function (callback) {
 	process.stdout.write('\nParsing upgrade scripts... ');
+	var queue = [];
+	var skipped = 0;
 
-	utils.walk(path.join(__dirname, './upgrades'), function (err, files) {
+	// Retrieve list of upgrades that have already been run
+	db.getSortedSetRange('schemaLog', 0, -1, function (err, completed) {
 		if (err) {
 			return callback(err);
 		}
 
-		Upgrade.process(files, callback);
+		queue = Upgrade.available.reduce(function (memo, cur) {
+			cur.upgrades.forEach(function (filename) {
+				if (completed.indexOf(filename) === -1) {
+					memo.push(path.join(__dirname, './upgrades', filename));
+				} else {
+					++skipped;
+				}
+			});
+
+			return memo;
+		}, queue);
+
+		Upgrade.process(queue, skipped, callback);
 	});
 };
 
@@ -35,12 +70,12 @@ Upgrade.runSingle = function (query, callback) {
 			return callback(err);
 		}
 
-		Upgrade.process(files, callback);
+		Upgrade.process(files, 0, callback);
 	});
 };
 
-Upgrade.process = function (files, callback) {
-	process.stdout.write('OK'.green + String(' ' + files.length).cyan + ' script(s) found\n'.cyan);
+Upgrade.process = function (files, skipCount, callback) {
+	process.stdout.write('OK'.green + ' | '.reset + String(files.length).cyan + ' script(s) found'.cyan + (skipCount > 0 ? ', '.cyan + String(skipCount).cyan + ' skipped'.cyan : '') + '\n'.reset);
 
 	// Do I need to sort the files here? we'll see.
 	// sort();
@@ -58,6 +93,9 @@ Upgrade.process = function (files, callback) {
 				return next(err);
 			}
 
+			// Record success in schemaLog
+			db.sortedSetAdd('schemaLog', Date.now(), path.basename(file, '.js'));
+
 			process.stdout.write('OK\n'.green);
 			next();
 		});