fix(api-filters): Filter creation is now logged to graylog and authlo…

…g ZMS-34 (#616)

* log filter creation to logs

* api.js, filterroutes, remove unnecessary loggelf param

* instead of dumping all filter data, create a human readable description of it using getFilterStrings

* separate getFilterStrings data into _filter_query and _filter_action fields, make them human-readable by joining

lib/api/filters.js

@@ -895,6 +895,35 @@ module.exports = (db, server, userHandler, settingsHandler) => {
                 }
             }
 
+            const filterStrings = getFilterStrings(filterData);
+
+            // Log added filter to graylog
+            userHandler.loggelf({
+                short_message: '[FILTERS] Added new filter',
+                _user: user,
+                _mailbox: filterData.action.mailbox,
+                _filter_id: filterData._id.toString(),
+                _filter_query: filterStrings.query.map(item => item.filter(val => val).join(': ')).join(', '),
+                _filter_action: filterStrings.action.map(item => item.filter(val => val).join(': ')).join(', '),
+                _filter_name: filterData.name,
+                _filter_created: filterData.created,
+                _filter_disabled: filterData.disabled
+            });
+
+            // Log added filter to authlog as well
+            try {
+                await userHandler.logAuthEvent(user, {
+                    action: 'filter added',
+                    result: 'success',
+                    filter: filterData._id,
+                    protocol: 'API',
+                    sess: values.sess,
+                    ip: values.ip
+                });
+            } catch (err) {
+                log.error('API [Filter]', err);
+            }
+
             return res.json({
                 success: r.acknowledged,
                 id: filterData._id.toString()