sails.js - How can I wrap sails-mongo db methods for profiling? -

i'm trying setup sails hook miniprofiler profile mongo usage. i'm struggling how wrap db methods in function execute profile. i'm trying via user hook:

setupminiprofilermongo(req, res, next) {   const adapter = sails.hooks.orm.datastores.default.adapter;   const adapterprototype = object.getprototypeof(adapter);   const originalmethod = adapter.adapter.find;   methodprototype.find = function profiledmongocommand(connectionname, collectionname, options, cb) {     sails.log.info(`${collectionname}.find`);     return originalmethod.call(adapter, connectionname, collectionname, options, cb);   }; } 

that causes following error thrown:

typeerror: cannot read property 'collections' of undefined     @ object.module.exports.adapter.find (/users/jgeurts/dev/platform/node_modules/sails-mongo/lib/adapter.js:349:40)     @ object.profiledmongocommand [as find] (/users/jgeurts/dev/platform/config/http.js:234:37) 

any appreciated. tried wrap methods on mongodb package, doesn't seem work either. :/

i got working wrapping waterline query methods. there room improvement, though.

setupminiprofilerwaterline(req, res, next) {   const dboperations = [     'count',     'create',     'createeach',     'define',     'describe',     'destroy',     'drop',     'find',     'join',     //        'native',     //        'registerconnection',     'update',   ];    const waterlinemethodbymodels = {};   const miniprofilerwaterline = () => {     return {       name: 'mongodb',       handler(req, res, next) {          if (!req.miniprofiler || !req.miniprofiler.enabled) {           return next();         }          const profiler = req.miniprofiler;          (const modelname of _.keys(sails.models)) {           (const dboperation of dboperations) {             const model = sails.models[modelname];             if (!model[dboperation]) {               continue;             }              if (!waterlinemethodbymodels[modelname]) {               waterlinemethodbymodels[modelname] = {};             }              // prevent wrapping method more once             if (waterlinemethodbymodels[modelname][dboperation]) {               continue;             }              waterlinemethodbymodels[modelname][dboperation] = true;              const originalmethod = model[dboperation];              model[dboperation] = function profiledmongocommand(...args) {               const query = args && args.length ? args[0] : '';               const lastarg = args && args.length ? args[args.length - 1] : null;               const modelandmethod = `${modelname}.${dboperation}`;                if (lastarg && typeof lastarg === 'function') {                 sails.log.debug(`mongo::${modelandmethod}  - ${json.stringify(query)}`);                 const callback = args.pop();                  const timing = profiler.starttimequery('mongodb', query ? json.stringify(query || '') : '');                 // in general, callstack kind of useless these profiles                 // model/db method more useful in miniprofiler ui                 timing.callstack = `\n\nmethod: ${modelandmethod}`;                  return originalmethod.call(this, ...args, function profiledresult(...results) {                   profiler.stoptimequery(timing);                   callback(...results);                 });               }                const methodresult = originalmethod.call(this, ...args);               const methodresultprototype = object.getprototypeof(methodresult);               const isdeferred = !!methodresultprototype.exec;               // if methodresult deferred object type, query method profiled above when deferred executed (with callback)               // care log if methodresult not deferred object               if (!isdeferred) {                 sails.log.warn(`was not able profile mongo::${modelandmethod}. maybe promise? query: ${json.stringify(query)}`);               }                return methodresult;             };           }         }          next();       },     };   };    miniprofiler.express.for(miniprofilerwaterline())(req, res, next); }, 

the code available miniprofiler-waterline if want contribute/use in own projects