optimized User.getUsers

src/groups.js

@@ -156,6 +156,10 @@
 		db.isSetMember('group:' + groupName + ':members', uid, callback);
 	};
 
+	Groups.isMembers = function(uids, groupName, callback) {
+		db.isSetMembers('group:' + groupName + ':members', uids, callback);
+	};
+
 	Groups.isMemberOfGroups = function(uid, groups, callback) {
 		groups = groups.map(function(groupName) {
 			return 'group:' + groupName + ':members';

src/user.js

@@ -239,36 +239,32 @@ var bcrypt = require('bcryptjs'),
 	};
 
 	User.getUsers = function(uids, callback) {
-		function loadUserInfo(user, callback) {
+		async.parallel({
-			if (!user) {
+			userData: function(next) {
-				return callback(null, user);
+				User.getMultipleUserFields(uids, ['uid', 'username', 'userslug', 'picture', 'status', 'banned', 'postcount', 'reputation'], next);
+			},
+			isAdmin: function(next) {
+				User.isAdministrator(uids, next);
+			},
+			isOnline: function(next) {
+				db.isSortedSetMembers('users:online', uids, next);
 			}
-
+		}, function(err, results) {
-			async.waterfall([
-				function(next) {
-					User.isAdministrator(user.uid, next);
-				},
-				function(isAdmin, next) {
-					user.status = !user.status ? 'online' : user.status;
-					user.administrator = isAdmin;
-					user.banned = parseInt(user.banned, 10) === 1;
-					db.isSortedSetMember('users:online', user.uid, next);
-				},
-				function(isMember, next) {
-					if (!isMember) {
-						user.status = 'offline';
-					}
-					next(null, user);
-				}
-			], callback);
-		}
-
-		User.getMultipleUserFields(uids, ['uid', 'username', 'userslug', 'picture', 'status', 'banned', 'postcount', 'reputation'], function(err, usersData) {
 			if (err) {
 				return callback(err);
 			}
 
-			async.map(usersData, loadUserInfo, callback);
+			results.userData.forEach(function(user, index) {
+				if (!user) {
+					return;
+				}
+				user.status = !user.status ? 'online' : user.status;
+				user.status = !results.isOnline[index] ? 'offline' : user.status;
+				user.administrator = results.isAdmin[index];
+				user.banned = parseInt(user.banned, 10) === 1;
+			});
+
+			callback(err, results.userData);
 		});
 	};
 
@@ -410,7 +406,11 @@ var bcrypt = require('bcryptjs'),
 	};
 
 	User.isAdministrator = function(uid, callback) {
-		groups.isMember(uid, 'administrators', callback);
+		if (Array.isArray(uid)) {
+			groups.isMembers(uid, 'administrators', callback);
+		} else {
+			groups.isMember(uid, 'administrators', callback);
+		}
 	};
 
 	User.isOnline = function(uid, callback) {